*/
+#include <assert.h>
#include <string.h> /* For strrchr and friends */
#include "bfd.h"
#include "sysdep.h"
#include "libbfd.h"
#include "libelf.h"
+/* Renaming structures, typedefs, macros and functions to be size-specific. */
#define Elf_External_Ehdr NAME(Elf,External_Ehdr)
#define Elf_External_Sym NAME(Elf,External_Sym)
#define Elf_External_Shdr NAME(Elf,External_Shdr)
#define elf_core_file_matches_executable_p NAME(bfd_elf,core_file_matches_executable_p)
#define elf_object_p NAME(bfd_elf,object_p)
#define elf_core_file_p NAME(bfd_elf,core_file_p)
-#define elf_write_object_contents NAME(bfd_elf,write_object_contents)
#define elf_get_symtab_upper_bound NAME(bfd_elf,get_symtab_upper_bound)
#define elf_get_reloc_upper_bound NAME(bfd_elf,get_reloc_upper_bound)
#define elf_canonicalize_reloc NAME(bfd_elf,canonicalize_reloc)
#define elf_set_section_contents NAME(bfd_elf,set_section_contents)
#define elf_no_info_to_howto NAME(bfd_elf,no_info_to_howto)
#define elf_no_info_to_howto_rel NAME(bfd_elf,no_info_to_howto_rel)
-#define elf_get_sect_thunk NAME(bfd_elf,get_sect_thunk)
#define elf_hash NAME(bfd_elf,hash)
#define elf_new_section_hook NAME(bfd_elf,new_section_hook)
+#define write_relocs NAME(bfd_elf,_write_relocs)
#if ARCH_SIZE == 64
#define ELF_R_INFO(X,Y) ELF64_R_INFO(X,Y)
#define ELF_R_SYM(X) ELF64_R_SYM(X)
+#define ELFCLASS ELFCLASS64
#endif
#if ARCH_SIZE == 32
#define ELF_R_INFO(X,Y) ELF32_R_INFO(X,Y)
#define ELF_R_SYM(X) ELF32_R_SYM(X)
-#endif
-
-#ifdef HAVE_PROCFS /* Some core file support requires host /proc files */
-#include <sys/procfs.h>
-#else
-#define bfd_prstatus(abfd, descdata, descsz, filepos) /* Define away */
-#define bfd_fpregset(abfd, descdata, descsz, filepos) /* Define away */
-#define bfd_prpsinfo(abfd, descdata, descsz, filepos) /* Define away */
+#define ELFCLASS ELFCLASS32
#endif
#ifndef INLINE
#endif
#endif
+static int shstrtab_length_fixed;
+
+struct elf_sect_data {
+ int reloc_sec;
+ /* more? */
+};
+
/* Forward declarations of static functions */
static struct sec * section_from_elf_index PARAMS ((bfd *, int));
struct symbol_cache_entry **));
static void elf_map_symbols PARAMS ((bfd *));
+static void swap_out_syms PARAMS ((bfd *));
#ifdef DEBUG
static void elf_debug_section PARAMS ((char *, int, Elf_Internal_Shdr *));
static void elf_debug_file PARAMS ((Elf_Internal_Ehdr *));
#endif
+#define elf_string_from_elf_strtab(abfd,strindex) \
+ elf_string_from_elf_section(abfd,elf_elfheader(abfd)->e_shstrndx,strindex)
+
+\f
+/* Structure swapping routines */
+
/* Should perhaps use put_offset, put_word, etc. For now, the two versions
can be handled by explicitly specifying 32 bits or "the long type". */
#if ARCH_SIZE == 64
dst->p_align = get_word (abfd, (bfd_byte *) src->p_align);
}
-/* ... */
-
static void
DEFUN (elf_swap_phdr_out, (abfd, src, dst),
bfd * abfd AND
}
/* Translate an ELF reloc from external format to internal format. */
-static void
+static INLINE void
DEFUN (elf_swap_reloc_in, (abfd, src, dst),
bfd * abfd AND
Elf_External_Rel * src AND
dst->r_info = get_word (abfd, (bfd_byte *) src->r_info);
}
-static void
+static INLINE void
DEFUN (elf_swap_reloca_in, (abfd, src, dst),
bfd * abfd AND
Elf_External_Rela * src AND
}
/* Translate an ELF reloc from internal format to external format. */
-static void
+static INLINE void
DEFUN (elf_swap_reloc_out, (abfd, src, dst),
bfd * abfd AND
Elf_Internal_Rel * src AND
put_word (abfd, src->r_info, dst->r_info);
}
-static void
+static INLINE void
DEFUN (elf_swap_reloca_out, (abfd, src, dst),
bfd * abfd AND
Elf_Internal_Rela * src AND
put_word (abfd, src->r_addend, dst->r_addend);
}
-/* Create a new bfd section from an ELF section header. */
+\f
+
+/* String table creation/manipulation routines */
+
+static struct strtab *
+DEFUN (bfd_new_strtab, (abfd),
+ bfd * abfd)
+{
+ struct strtab *ss;
+
+ ss = (struct strtab *) bfd_xmalloc (sizeof (struct strtab));
+ ss->tab = bfd_xmalloc (1);
+ BFD_ASSERT (ss->tab != 0);
+ *ss->tab = 0;
+ ss->nentries = 0;
+ ss->length = 1;
-static INLINE char *
-DEFUN (elf_string_from_elf_strtab, (abfd, strindex),
- bfd *abfd AND
- int strindex)
+ return ss;
+}
+
+static int
+DEFUN (bfd_add_to_strtab, (abfd, ss, str),
+ bfd * abfd AND
+ struct strtab *ss AND
+ CONST char *str)
+{
+ /* should search first, but for now: */
+ /* include the trailing NUL */
+ int ln = strlen (str) + 1;
+
+ /* should this be using obstacks? */
+ ss->tab = realloc (ss->tab, ss->length + ln);
+
+ BFD_ASSERT (ss->tab != 0);
+ strcpy (ss->tab + ss->length, str);
+ ss->nentries++;
+ ss->length += ln;
+
+ return ss->length - ln;
+}
+
+static int
+DEFUN (bfd_add_2_to_strtab, (abfd, ss, str, str2),
+ bfd * abfd AND
+ struct strtab *ss AND
+ char *str AND
+ CONST char *str2)
{
- return elf_string_from_elf_section (abfd, elf_elfheader (abfd)->e_shstrndx,
- strindex);
+ /* should search first, but for now: */
+ /* include the trailing NUL */
+ int ln = strlen (str) + strlen (str2) + 1;
+
+ /* should this be using obstacks? */
+ if (ss->length)
+ ss->tab = realloc (ss->tab, ss->length + ln);
+ else
+ ss->tab = bfd_xmalloc (ln);
+
+ BFD_ASSERT (ss->tab != 0);
+ strcpy (ss->tab + ss->length, str);
+ strcpy (ss->tab + ss->length + strlen (str), str2);
+ ss->nentries++;
+ ss->length += ln;
+
+ return ss->length - ln;
}
+\f
+/* ELF .o/exec file reading */
+
+/* Create a new bfd section from an ELF section header. */
+
static boolean
DEFUN (bfd_section_from_shdr, (abfd, shindex),
bfd * abfd AND
unsigned int shindex)
{
- Elf_Internal_Shdr *i_shdrp = elf_elfsections (abfd);
- Elf_Internal_Shdr *hdr = i_shdrp + shindex;
+ Elf_Internal_Shdr *hdr = elf_elfsections (abfd)[shindex];
+ Elf_Internal_Ehdr *ehdr = elf_elfheader (abfd);
asection *newsect;
char *name;
newsect = bfd_make_section (abfd, name);
if (newsect != NULL)
{
+ newsect->filepos = hdr->sh_offset; /* so we can read back the bits */
+ newsect->flags |= SEC_HAS_CONTENTS;
newsect->vma = hdr->sh_addr;
newsect->_raw_size = hdr->sh_size;
- newsect->filepos = hdr->sh_offset; /* so we can read back the bits */
- newsect->flags |= SEC_HAS_CONTENTS;
newsect->alignment_power = bfd_log2 (hdr->sh_addralign);
if (hdr->sh_flags & SHF_ALLOC)
newsect->flags |= SEC_READONLY;
if (hdr->sh_flags & SHF_EXECINSTR)
- newsect->flags |= SEC_CODE; /* FIXME: may only contain SOME code */
+ newsect->flags |= SEC_CODE; /* FIXME: may only contain SOME code */
else
newsect->flags |= SEC_DATA;
return true;
case SHT_SYMTAB: /* A symbol table */
+ if (elf_onesymtab (abfd) == shindex)
+ return true;
+
BFD_ASSERT (hdr->sh_entsize == sizeof (Elf_External_Sym));
+ BFD_ASSERT (elf_onesymtab (abfd) == 0);
elf_onesymtab (abfd) = shindex;
+ elf_tdata(abfd)->symtab_hdr = *hdr;
+ elf_elfsections(abfd)[shindex] = &elf_tdata(abfd)->symtab_hdr;
abfd->flags |= HAS_SYMS;
return true;
case SHT_STRTAB: /* A string table */
- if (!strcmp (name, ".strtab") || !strcmp (name, ".shstrtab"))
+ if (hdr->rawdata)
return true;
+ if (ehdr->e_shstrndx == shindex)
+ {
+ elf_tdata(abfd)->shstrtab_hdr = *hdr;
+ elf_elfsections(abfd)[shindex] = &elf_tdata(abfd)->shstrtab_hdr;
+ hdr->rawdata = (PTR) &elf_tdata(abfd)->shstrtab_hdr;
+ return true;
+ }
+ {
+ int i;
- if (!hdr->rawdata)
+ for (i = 1; i < ehdr->e_shnum; i++)
+ {
+ Elf_Internal_Shdr *hdr2 = elf_elfsections(abfd)[i];
+ if (hdr2->sh_link == shindex)
+ {
+ bfd_section_from_shdr (abfd, i);
+ if (elf_onesymtab (abfd) == i)
+ {
+ elf_tdata(abfd)->strtab_hdr = *hdr;
+ elf_elfsections(abfd)[shindex] = &elf_tdata(abfd)->strtab_hdr;
+ return true;
+ }
+#if 0 /* Not handling other string tables specially right now. */
+ hdr2 = elf_elfsections(abfd)[i]; /* in case it moved */
+ /* We have a strtab for some random other section. */
+ newsect = (asection *) hdr2->rawdata;
+ if (!newsect)
+ break;
+ hdr->rawdata = (PTR) newsect;
+ hdr2 = &elf_section_data (newsect)->str_hdr;
+ *hdr2 = *hdr;
+ elf_elfsections(abfd)[shindex] = hdr2;
+#endif
+ }
+ }
+ }
+
+ newsect = bfd_make_section (abfd, name);
+ if (newsect)
{
- newsect = bfd_make_section (abfd, name);
- if (newsect)
- newsect->flags = SEC_HAS_CONTENTS;
+ newsect->flags = SEC_HAS_CONTENTS;
+ hdr->rawdata = (PTR) newsect;
+ newsect->_raw_size = hdr->sh_size;
+ newsect->alignment_power = 0;
+ newsect->vma = 0;
+
+ if (hdr->sh_flags & SHF_ALLOC)
+ newsect->flags |= SEC_ALLOC|SEC_LOAD;
+ if (!(hdr->sh_flags & SHF_WRITE))
+ newsect->flags |= SEC_READONLY;
+ if (hdr->sh_flags & SHF_EXECINSTR)
+ newsect->flags |= SEC_CODE;
+ else
+ newsect->flags |= SEC_DATA;
}
return true;
case SHT_REL:
case SHT_RELA:
- /* *these* do a lot of work -- but build no sections! */
- /* the spec says there can be multiple strtabs, but only one symtab */
- /* but there can be lots of REL* sections. */
+ /* *These* do a lot of work -- but build no sections!
+ The spec says there can be multiple strtabs, but only one symtab,
+ but there can be lots of REL* sections. */
/* FIXME: The above statement is wrong! There are typically at least
- two symbol tables in a dynamically linked executable, ".dynsym"
- which is the dynamic linkage symbol table and ".symtab", which is
- the "traditional" symbol table. -fnf */
+ two symbol tables in a dynamically linked executable, ".dynsym"
+ which is the dynamic linkage symbol table and ".symtab", which is
+ the "traditional" symbol table. -fnf */
{
asection *target_sect;
+ Elf_Internal_Shdr *hdr2;
int use_rela_p = get_elf_backend_data (abfd)->use_rela_p;
/* Don't allow REL relocations on a machine that uses RELA and
? sizeof (Elf_External_Rela)
: sizeof (Elf_External_Rel)));
- bfd_section_from_shdr (abfd, hdr->sh_link); /* symbol table */
bfd_section_from_shdr (abfd, hdr->sh_info); /* target */
+ bfd_section_from_shdr (abfd, hdr->sh_link); /* symbol table */
target_sect = section_from_elf_index (abfd, hdr->sh_info);
if (target_sect == NULL)
return false;
-#if 0
- /* FIXME: We are only prepared to read one symbol table, so
- do NOT read the dynamic symbol table since it is only a
- subset of the full symbol table. Also see comment above. -fnf */
- if (!elf_slurp_symbol_table (abfd, i_shdrp + hdr->sh_link))
- return false;
-#endif
-
+ hdr2 = &elf_section_data (target_sect)->rel_hdr;
+ *hdr2 = *hdr;
+ elf_elfsections(abfd)[shindex] = hdr2;
target_sect->reloc_count = hdr->sh_size / hdr->sh_entsize;
target_sect->flags |= SEC_RELOC;
target_sect->relocation = 0;
target_sect->rel_filepos = hdr->sh_offset;
+ abfd->flags |= HAS_RELOC;
return true;
}
break;
bfd *abfd
AND asection *sec)
{
-/* sec->symbol->name = "";*/
- return true;
-}
-
-static struct strtab *
-DEFUN (bfd_new_strtab, (abfd),
- bfd * abfd)
-{
- struct strtab *ss;
-
- ss = (struct strtab *) bfd_xmalloc (sizeof (struct strtab));
- ss->tab = bfd_xmalloc (1);
- BFD_ASSERT (ss->tab != 0);
- *ss->tab = 0;
- ss->nentries = 0;
- ss->length = 1;
-
- return ss;
-}
-
-static int
-DEFUN (bfd_add_to_strtab, (abfd, ss, str),
- bfd * abfd AND
- struct strtab *ss AND
- CONST char *str)
-{
- /* should search first, but for now: */
- /* include the trailing NUL */
- int ln = strlen (str) + 1;
-
- /* should this be using obstacks? */
- ss->tab = realloc (ss->tab, ss->length + ln);
-
- BFD_ASSERT (ss->tab != 0);
- strcpy (ss->tab + ss->length, str);
- ss->nentries++;
- ss->length += ln;
-
- return ss->length - ln;
-}
-
-static int
-DEFUN (bfd_add_2_to_strtab, (abfd, ss, str, str2),
- bfd * abfd AND
- struct strtab *ss AND
- char *str AND
- CONST char *str2)
-{
- /* should search first, but for now: */
- /* include the trailing NUL */
- int ln = strlen (str) + strlen (str2) + 1;
-
- /* should this be using obstacks? */
- if (ss->length)
- ss->tab = realloc (ss->tab, ss->length + ln);
- else
- ss->tab = bfd_xmalloc (ln);
-
- BFD_ASSERT (ss->tab != 0);
- strcpy (ss->tab + ss->length, str);
- strcpy (ss->tab + ss->length + strlen (str), str2);
- ss->nentries++;
- ss->length += ln;
-
- return ss->length - ln;
-}
-
-/* Create a new ELF section from a bfd section. */
-
-#if 0 /* not used */
-static boolean
-DEFUN (bfd_shdr_from_section, (abfd, hdr, shstrtab, indx),
- bfd * abfd AND
- Elf_Internal_Shdr * hdr AND
- struct strtab *shstrtab AND
- int indx)
-{
- asection *sect;
- int ndx;
-
- sect = abfd->sections;
- for (ndx = indx; --ndx;)
- {
- sect = sect->next;
- }
- hdr[indx].sh_name = bfd_add_to_strtab (abfd, shstrtab,
- bfd_section_name (abfd, sect));
- hdr[indx].sh_addr = sect->vma;
- hdr[indx].sh_size = sect->_raw_size;
- hdr[indx].sh_addralign = 1 << sect->alignment_power;
- hdr[indx].sh_flags = 0;
- /* these need to be preserved on */
- hdr[indx].sh_link = 0;
- hdr[indx].sh_info = 0;
- hdr[indx].sh_entsize = 0;
-
- hdr[indx].sh_type = 0;
- if (sect->flags & SEC_RELOC)
- {
- int use_rela_p = get_elf_backend_data (abfd)->use_rela_p;
- hdr[indx].sh_type = use_rela_p ? SHT_RELA : SHT_REL;
- }
-
- if (sect->flags & SEC_HAS_CONTENTS)
- {
- hdr[indx].sh_offset = sect->filepos;
- hdr[indx].sh_size = sect->_raw_size;
- }
- if (sect->flags & SEC_ALLOC)
- {
- hdr[indx].sh_flags |= SHF_ALLOC;
- if (sect->flags & SEC_LOAD)
- {
- /* do something with sh_type ? */
- }
- }
- if (!(sect->flags & SEC_READONLY))
- hdr[indx].sh_flags |= SHF_WRITE;
-
- if (sect->flags & SEC_CODE)
- hdr[indx].sh_flags |= SHF_EXECINSTR;
-
+ struct bfd_elf_section_data *sdata;
+ sec->used_by_bfd = sdata = bfd_alloc (abfd, sizeof (*sdata));
+ memset (sdata, 0, sizeof (*sdata));
return true;
}
-#endif
/* Create a new bfd section from an ELF program header.
return true;
}
-#ifdef HAVE_PROCFS
+/* Begin processing a given object.
-static void
-DEFUN (bfd_prstatus, (abfd, descdata, descsz, filepos),
- bfd * abfd AND
- char *descdata AND
- int descsz AND
- long filepos)
+ First we validate the file by reading in the ELF header and checking
+ the magic number. */
+
+static INLINE boolean
+DEFUN (elf_file_p, (x_ehdrp), Elf_External_Ehdr * x_ehdrp)
{
- asection *newsect;
- prstatus_t *status = (prstatus_t *) 0;
+ return ((x_ehdrp->e_ident[EI_MAG0] == ELFMAG0)
+ && (x_ehdrp->e_ident[EI_MAG1] == ELFMAG1)
+ && (x_ehdrp->e_ident[EI_MAG2] == ELFMAG2)
+ && (x_ehdrp->e_ident[EI_MAG3] == ELFMAG3));
+}
- if (descsz == sizeof (prstatus_t))
- {
- newsect = bfd_make_section (abfd, ".reg");
- newsect->_raw_size = sizeof (status->pr_reg);
- newsect->filepos = filepos + (long) &status->pr_reg;
- newsect->flags = SEC_ALLOC | SEC_HAS_CONTENTS;
- newsect->alignment_power = 2;
- if ((core_prstatus (abfd) = bfd_alloc (abfd, descsz)) != NULL)
- {
- memcpy (core_prstatus (abfd), descdata, descsz);
- }
- }
-}
-
-/* Stash a copy of the prpsinfo structure away for future use. */
-
-static void
-DEFUN (bfd_prpsinfo, (abfd, descdata, descsz, filepos),
- bfd * abfd AND
- char *descdata AND
- int descsz AND
- long filepos)
+bfd_target *
+DEFUN (elf_object_p, (abfd), bfd * abfd)
{
- asection *newsect;
+ Elf_External_Ehdr x_ehdr; /* Elf file header, external form */
+ Elf_Internal_Ehdr *i_ehdrp; /* Elf file header, internal form */
+ Elf_External_Shdr x_shdr; /* Section header table entry, external form */
+ Elf_Internal_Shdr *i_shdrp; /* Section header table, internal form */
+ int shindex;
+ char *shstrtab; /* Internal copy of section header stringtab */
+ struct elf_backend_data *ebd; /* Use to get ELF_ARCH stored in xvec */
- if (descsz == sizeof (prpsinfo_t))
+ /* Read in the ELF header in external format. */
+
+ if (bfd_read ((PTR) & x_ehdr, sizeof (x_ehdr), 1, abfd) != sizeof (x_ehdr))
{
- if ((core_prpsinfo (abfd) = bfd_alloc (abfd, descsz)) != NULL)
- {
- memcpy (core_prpsinfo (abfd), descdata, descsz);
- }
+ bfd_error = system_call_error;
+ return NULL;
}
-}
-static void
-DEFUN (bfd_fpregset, (abfd, descdata, descsz, filepos),
- bfd * abfd AND
- char *descdata AND
- int descsz AND
- long filepos)
-{
- asection *newsect;
+ /* Now check to see if we have a valid ELF file, and one that BFD can
+ make use of. The magic number must match, the address size ('class')
+ and byte-swapping must match our XVEC entry, and it must have a
+ section header table (FIXME: See comments re sections at top of this
+ file). */
- newsect = bfd_make_section (abfd, ".reg2");
- newsect->_raw_size = descsz;
- newsect->filepos = filepos;
- newsect->flags = SEC_ALLOC | SEC_HAS_CONTENTS;
- newsect->alignment_power = 2;
-}
+ if (elf_file_p (&x_ehdr) == false)
+ {
+ wrong:
+ bfd_error = wrong_format;
+ return NULL;
+ }
-#endif /* HAVE_PROCFS */
+ if (x_ehdr.e_ident[EI_VERSION] != EV_CURRENT)
+ goto wrong;
-/* Return a pointer to the args (including the command name) that were
- seen by the program that generated the core dump. Note that for
- some reason, a spurious space is tacked onto the end of the args
- in some (at least one anyway) implementations, so strip it off if
- it exists. */
+ if (x_ehdr.e_ident[EI_CLASS] != ELFCLASS)
+ goto wrong;
-char *
-DEFUN (elf_core_file_failing_command, (abfd),
- bfd * abfd)
-{
-#ifdef HAVE_PROCFS
- if (core_prpsinfo (abfd))
+ /* Switch xvec to match the specified byte order. */
+ switch (x_ehdr.e_ident[EI_DATA])
{
- prpsinfo_t *p = core_prpsinfo (abfd);
- char *scan = p->pr_psargs;
- while (*scan++)
- {;
- }
- scan -= 2;
- if ((scan > p->pr_psargs) && (*scan == ' '))
- {
- *scan = '\000';
- }
- return p->pr_psargs;
+ case ELFDATA2MSB: /* Big-endian */
+ if (!abfd->xvec->header_byteorder_big_p)
+ goto wrong;
+ break;
+ case ELFDATA2LSB: /* Little-endian */
+ if (abfd->xvec->header_byteorder_big_p)
+ goto wrong;
+ break;
+ case ELFDATANONE: /* No data encoding specified */
+ default: /* Unknown data encoding specified */
+ goto wrong;
}
-#endif
- return NULL;
-}
-/* Return the number of the signal that caused the core dump. Presumably,
- since we have a core file, we got a signal of some kind, so don't bother
- checking the other process status fields, just return the signal number.
- */
+ /* Allocate an instance of the elf_obj_tdata structure and hook it up to
+ the tdata pointer in the bfd. */
-int
-DEFUN (elf_core_file_failing_signal, (abfd),
- bfd * abfd)
-{
-#ifdef HAVE_PROCFS
- if (core_prstatus (abfd))
+ if (NULL == (elf_tdata (abfd) = (struct elf_obj_tdata *)
+ bfd_zalloc (abfd, sizeof (struct elf_obj_tdata))))
{
- return ((prstatus_t *) (core_prstatus (abfd)))->pr_cursig;
+ bfd_error = no_memory;
+ return NULL;
}
-#endif
- return -1;
-}
-/* Check to see if the core file could reasonably be expected to have
- come for the current executable file. Note that by default we return
- true unless we find something that indicates that there might be a
- problem.
- */
+ /* FIXME: Any `wrong' exits below here will leak memory (tdata). */
-boolean
-DEFUN (elf_core_file_matches_executable_p, (core_bfd, exec_bfd),
- bfd * core_bfd AND
- bfd * exec_bfd)
-{
-#ifdef HAVE_PROCFS
- char *corename;
- char *execname;
+ /* Now that we know the byte order, swap in the rest of the header */
+ i_ehdrp = elf_elfheader (abfd);
+ elf_swap_ehdr_in (abfd, &x_ehdr, i_ehdrp);
+#if DEBUG & 1
+ elf_debug_file (i_ehdrp);
#endif
- /* First, xvecs must match since both are ELF files for the same target. */
+ /* If there is no section header table, we're hosed. */
+ if (i_ehdrp->e_shoff == 0)
+ goto wrong;
- if (core_bfd->xvec != exec_bfd->xvec)
- {
- bfd_error = system_call_error;
- return false;
- }
+ if (i_ehdrp->e_type == ET_EXEC || i_ehdrp->e_type == ET_DYN)
+ abfd->flags |= EXEC_P;
-#ifdef HAVE_PROCFS
+ /* Retrieve the architecture information from the xvec and verify
+ that it matches the machine info stored in the ELF header.
+ This allows us to resolve ambiguous formats that might not
+ otherwise be distinguishable. */
- /* If no prpsinfo, just return true. Otherwise, grab the last component
- of the exec'd pathname from the prpsinfo. */
+ ebd = get_elf_backend_data (abfd);
- if (core_prpsinfo (core_bfd))
+ /* Perhaps the elf architecture value should be another field in the
+ elf backend data? If you change this to work that way, make sure
+ that you still get bfd_arch_unknown for unknown architecture types,
+ and that it still gets accepted by the `generic' elf target. */
+ {
+ int i;
+ enum bfd_architecture arch = bfd_arch_unknown;
+
+ for (i = 0; i < bfd_elf_arch_map_size; i++)
+ {
+ if (bfd_elf_arch_map[i].elf_arch == i_ehdrp->e_machine)
+ {
+ arch = bfd_elf_arch_map[i].bfd_arch;
+ break;
+ }
+ }
+ /* start-sanitize-v9 */
+ if (i_ehdrp->e_machine == EM_SPARC64)
+ arch = bfd_arch_sparc;
+ /* end-sanitize-v9 */
+ if (ebd->arch != arch)
+ goto wrong;
+ bfd_default_set_arch_mach (abfd, arch, 0);
+ }
+
+ /* Allocate space for a copy of the section header table in
+ internal form, seek to the section header table in the file,
+ read it in, and convert it to internal form. As a simple sanity
+ check, verify that the what BFD thinks is the size of each section
+ header table entry actually matches the size recorded in the file. */
+
+ if (i_ehdrp->e_shentsize != sizeof (x_shdr))
+ goto wrong;
+ i_shdrp = (Elf_Internal_Shdr *)
+ bfd_alloc (abfd, sizeof (*i_shdrp) * i_ehdrp->e_shnum);
+ elf_elfsections (abfd) = bfd_alloc (abfd, sizeof (i_shdrp) * i_ehdrp->e_shnum);
+ if (!i_shdrp || !elf_elfsections(abfd))
{
- corename = (((struct prpsinfo *) core_prpsinfo (core_bfd))->pr_fname);
+ bfd_error = no_memory;
+ return NULL;
}
- else
+ if (bfd_seek (abfd, i_ehdrp->e_shoff, SEEK_SET) == -1)
{
- return true;
+ bfd_error = system_call_error;
+ return NULL;
}
-
- /* Find the last component of the executable pathname. */
-
- if ((execname = strrchr (exec_bfd->filename, '/')) != NULL)
+ for (shindex = 0; shindex < i_ehdrp->e_shnum; shindex++)
{
- execname++;
+ if (bfd_read ((PTR) & x_shdr, sizeof x_shdr, 1, abfd)
+ != sizeof (x_shdr))
+ {
+ bfd_error = system_call_error;
+ return NULL;
+ }
+ elf_swap_shdr_in (abfd, &x_shdr, i_shdrp + shindex);
+ elf_elfsections(abfd)[shindex] = i_shdrp + shindex;
}
- else
+ if (i_ehdrp->e_shstrndx)
{
- execname = (char *) exec_bfd->filename;
+ bfd_section_from_shdr (abfd, i_ehdrp->e_shstrndx);
}
- /* See if they match */
+#if 0
+ for (shindex = i_ehdrp->e_shnum - 1; shindex >= 0; shindex--)
+ {
+ if (!strcmp (elf_string_from_elf_strtab (abfd,
+ i_shdrp[shindex].sh_name),
+ ".strtab"))
+ {
+ elf_tdata(abfd)->strtab_hdr = i_shdrp[shindex];
+ elf_elfsections(abfd)[shindex] = &elf_tdata(abfd)->strtab_hdr;
+ }
+ else if (!strcmp (elf_string_from_elf_strtab (abfd,
+ i_shdrp[shindex].sh_name),
+ ".symtab"))
+ {
+ elf_tdata(abfd)->symtab_hdr = i_shdrp[shindex];
+ elf_elfsections(abfd)[shindex] = &elf_tdata(abfd)->symtab_hdr;
+ elf_onesymtab (abfd) = shindex;
+ }
+ }
+#endif
- return strcmp (execname, corename) ? false : true;
+ /* Read in the string table containing the names of the sections. We
+ will need the base pointer to this table later. */
+ /* We read this inline now, so that we don't have to go through
+ bfd_section_from_shdr with it (since this particular strtab is
+ used to find all of the ELF section names.) */
-#else
+ shstrtab = elf_get_str_section (abfd, i_ehdrp->e_shstrndx);
+ if (!shstrtab)
+ return NULL;
- return true;
+ /* Once all of the section headers have been read and converted, we
+ can start processing them. Note that the first section header is
+ a dummy placeholder entry, so we ignore it.
-#endif /* HAVE_PROCFS */
-}
+ We also watch for the symbol table section and remember the file
+ offset and section size for both the symbol table section and the
+ associated string table section. */
-/* ELF core files contain a segment of type PT_NOTE, that holds much of
- the information that would normally be available from the /proc interface
- for the process, at the time the process dumped core. Currently this
- includes copies of the prstatus, prpsinfo, and fpregset structures.
+ for (shindex = 1; shindex < i_ehdrp->e_shnum; shindex++)
+ {
+ bfd_section_from_shdr (abfd, shindex);
+ }
- Since these structures are potentially machine dependent in size and
- ordering, bfd provides two levels of support for them. The first level,
- available on all machines since it does not require that the host
- have /proc support or the relevant include files, is to create a bfd
- section for each of the prstatus, prpsinfo, and fpregset structures,
- without any interpretation of their contents. With just this support,
- the bfd client will have to interpret the structures itself. Even with
- /proc support, it might want these full structures for it's own reasons.
+ /* Remember the entry point specified in the ELF file header. */
- In the second level of support, where HAVE_PROCFS is defined, bfd will
- pick apart the structures to gather some additional information that
- clients may want, such as the general register set, the name of the
- exec'ed file and its arguments, the signal (if any) that caused the
- core dump, etc.
+ bfd_get_start_address (abfd) = i_ehdrp->e_entry;
- */
+ return abfd->xvec;
+}
+\f
+/* ELF .o/exec file writing */
+
+/* Create a new ELF section from a bfd section. */
+
+#if 0 /* not used */
static boolean
-DEFUN (elf_corefile_note, (abfd, hdr),
+DEFUN (bfd_shdr_from_section, (abfd, hdr, shstrtab, indx),
bfd * abfd AND
- Elf_Internal_Phdr * hdr)
+ Elf_Internal_Shdr * hdr AND
+ struct strtab *shstrtab AND
+ int indx)
{
- Elf_External_Note *x_note_p; /* Elf note, external form */
- Elf_Internal_Note i_note; /* Elf note, internal form */
- char *buf = NULL; /* Entire note segment contents */
- char *namedata; /* Name portion of the note */
- char *descdata; /* Descriptor portion of the note */
- char *sectname; /* Name to use for new section */
- long filepos; /* File offset to descriptor data */
- asection *newsect;
+ asection *sect;
+ int ndx;
- if (hdr->p_filesz > 0
- && (buf = (char *) bfd_xmalloc (hdr->p_filesz)) != NULL
- && bfd_seek (abfd, hdr->p_offset, SEEK_SET) != -1
- && bfd_read ((PTR) buf, hdr->p_filesz, 1, abfd) == hdr->p_filesz)
+ sect = abfd->sections;
+ for (ndx = indx; --ndx;)
{
- x_note_p = (Elf_External_Note *) buf;
- while ((char *) x_note_p < (buf + hdr->p_filesz))
- {
- i_note.namesz = bfd_h_get_32 (abfd, (bfd_byte *) x_note_p->namesz);
- i_note.descsz = bfd_h_get_32 (abfd, (bfd_byte *) x_note_p->descsz);
- i_note.type = bfd_h_get_32 (abfd, (bfd_byte *) x_note_p->type);
- namedata = x_note_p->name;
- descdata = namedata + BFD_ALIGN (i_note.namesz, 4);
- filepos = hdr->p_offset + (descdata - buf);
- switch (i_note.type)
- {
- case NT_PRSTATUS:
- /* process descdata as prstatus info */
- bfd_prstatus (abfd, descdata, i_note.descsz, filepos);
- sectname = ".prstatus";
- break;
- case NT_FPREGSET:
- /* process descdata as fpregset info */
- bfd_fpregset (abfd, descdata, i_note.descsz, filepos);
- sectname = ".fpregset";
- break;
- case NT_PRPSINFO:
- /* process descdata as prpsinfo */
- bfd_prpsinfo (abfd, descdata, i_note.descsz, filepos);
- sectname = ".prpsinfo";
- break;
- default:
- /* Unknown descriptor, just ignore it. */
- sectname = NULL;
- break;
- }
- if (sectname != NULL)
- {
- newsect = bfd_make_section (abfd, sectname);
- newsect->_raw_size = i_note.descsz;
- newsect->filepos = filepos;
- newsect->flags = SEC_ALLOC | SEC_HAS_CONTENTS;
- newsect->alignment_power = 2;
- }
- x_note_p = (Elf_External_Note *)
- (descdata + BFD_ALIGN (i_note.descsz, 4));
- }
+ sect = sect->next;
}
- if (buf != NULL)
+ hdr[indx].sh_name = bfd_add_to_strtab (abfd, shstrtab,
+ bfd_section_name (abfd, sect));
+ hdr[indx].sh_addr = sect->vma;
+ hdr[indx].sh_size = sect->_raw_size;
+ hdr[indx].sh_addralign = 1 << sect->alignment_power;
+ hdr[indx].sh_flags = 0;
+ /* these need to be preserved on */
+ hdr[indx].sh_link = 0;
+ hdr[indx].sh_info = 0;
+ hdr[indx].sh_entsize = 0;
+
+ hdr[indx].sh_type = 0;
+ if (sect->flags & SEC_RELOC)
{
- free (buf);
+ int use_rela_p = get_elf_backend_data (abfd)->use_rela_p;
+ hdr[indx].sh_type = use_rela_p ? SHT_RELA : SHT_REL;
}
- return true;
-
-}
+ if (sect->flags & SEC_HAS_CONTENTS)
+ {
+ hdr[indx].sh_offset = sect->filepos;
+ hdr[indx].sh_size = sect->_raw_size;
+ }
+ if (sect->flags & SEC_ALLOC)
+ {
+ hdr[indx].sh_flags |= SHF_ALLOC;
+ if (sect->flags & SEC_LOAD)
+ {
+ /* do something with sh_type ? */
+ }
+ }
+ if (!(sect->flags & SEC_READONLY))
+ hdr[indx].sh_flags |= SHF_WRITE;
-/* Begin processing a given object.
+ if (sect->flags & SEC_CODE)
+ hdr[indx].sh_flags |= SHF_EXECINSTR;
- First we validate the file by reading in the ELF header and checking
- the magic number. */
+ return true;
+}
+#endif
-static INLINE boolean
-DEFUN (elf_file_p, (x_ehdrp), Elf_External_Ehdr * x_ehdrp)
+/*
+ Takes a bfd and a symbol, returns a pointer to the elf specific area
+ of the symbol if there is one.
+ */
+static INLINE elf_symbol_type *
+DEFUN (elf_symbol_from, (ignore_abfd, symbol),
+ bfd * ignore_abfd AND
+ asymbol * symbol)
{
- return ((x_ehdrp->e_ident[EI_MAG0] == ELFMAG0)
- && (x_ehdrp->e_ident[EI_MAG1] == ELFMAG1)
- && (x_ehdrp->e_ident[EI_MAG2] == ELFMAG2)
- && (x_ehdrp->e_ident[EI_MAG3] == ELFMAG3));
+ if (symbol->the_bfd->xvec->flavour != bfd_target_elf_flavour)
+ return 0;
+
+ if (symbol->the_bfd->tdata.elf_obj_data == (struct elf_obj_tdata *) NULL)
+ return 0;
+
+ return (elf_symbol_type *) symbol;
}
-bfd_target *
-DEFUN (elf_object_p, (abfd), bfd * abfd)
-{
- Elf_External_Ehdr x_ehdr; /* Elf file header, external form */
- Elf_Internal_Ehdr *i_ehdrp; /* Elf file header, internal form */
- Elf_External_Shdr x_shdr; /* Section header table entry, external form */
- Elf_Internal_Shdr *i_shdrp; /* Section header table, internal form */
- int shindex;
- char *shstrtab; /* Internal copy of section header stringtab */
- struct elf_backend_data *ebd; /* Use to get ELF_ARCH stored in xvec */
+/*
+ Create ELF output from BFD sections.
- /* Read in the ELF header in external format. */
+ Essentially, just create the section header and forget about the program
+ header for now.
- if (bfd_read ((PTR) & x_ehdr, sizeof (x_ehdr), 1, abfd) != sizeof (x_ehdr))
- {
- bfd_error = system_call_error;
- return NULL;
- }
+*/
- /* Now check to see if we have a valid ELF file, and one that BFD can
- make use of. The magic number must match, the address size ('class')
- and byte-swapping must match our XVEC entry, and it must have a
- section header table (FIXME: See comments re sections at top of this
- file). */
+static void
+DEFUN (elf_make_sections, (abfd, asect, obj),
+ bfd * abfd AND
+ asection * asect AND
+ PTR obj)
+{
+ /* most of what is in bfd_shdr_from_section goes in here... */
+ /* and all of these sections generate at *least* one ELF section. */
+ int idx;
- if (elf_file_p (&x_ehdr) == false)
- {
- wrong:
- bfd_error = wrong_format;
- return NULL;
- }
+ Elf_Internal_Shdr *this_hdr;
+ this_hdr = &elf_section_data (asect)->this_hdr;
- if (x_ehdr.e_ident[EI_VERSION] != EV_CURRENT)
- goto wrong;
+ this_hdr->sh_addr = asect->vma;
+ this_hdr->sh_size = asect->_raw_size;
+ /* contents already set by elf_set_section_contents */
- {
-#if ARCH_SIZE == 64
- unsigned int class = ELFCLASS64;
-#endif
-#if ARCH_SIZE == 32
- unsigned int class = ELFCLASS32;
+ if ((asect->flags & SEC_RELOC)
+#if 0
+ /* The flags are sometimes inconsistent. */
+ && asect->reloc_count > 0
#endif
- if (x_ehdr.e_ident[EI_CLASS] != class)
- goto wrong;
- }
-
- /* Switch xvec to match the specified byte order. */
- switch (x_ehdr.e_ident[EI_DATA])
+ )
{
- case ELFDATA2MSB: /* Big-endian */
- if (!abfd->xvec->header_byteorder_big_p)
- goto wrong;
- break;
- case ELFDATA2LSB: /* Little-endian */
- if (abfd->xvec->header_byteorder_big_p)
- goto wrong;
- break;
- case ELFDATANONE: /* No data encoding specified */
- default: /* Unknown data encoding specified */
- goto wrong;
- }
+ /* emit a reloc section, and thus strtab and symtab... */
+ Elf_Internal_Shdr *rela_hdr;
+ Elf_External_Rela *outbound_relocas;
+ Elf_External_Rel *outbound_relocs;
+ int use_rela_p = get_elf_backend_data (abfd)->use_rela_p;
- /* Allocate an instance of the elf_obj_tdata structure and hook it up to
- the tdata pointer in the bfd. */
+ rela_hdr = &elf_section_data (asect)->rel_hdr;
- if (NULL == (elf_tdata (abfd) = (struct elf_obj_tdata *)
- bfd_zalloc (abfd, sizeof (struct elf_obj_tdata))))
+ /* orelocation has the data, reloc_count has the count... */
+ if (use_rela_p)
+ {
+ rela_hdr->sh_type = SHT_RELA;
+ rela_hdr->sh_entsize = sizeof (Elf_External_Rela);
+ }
+ else
+ /* REL relocations */
+ {
+ rela_hdr->sh_type = SHT_REL;
+ rela_hdr->sh_entsize = sizeof (Elf_External_Rel);
+ }
+ rela_hdr->sh_flags = 0;
+ rela_hdr->sh_addr = 0;
+ rela_hdr->sh_offset = 0;
+ rela_hdr->sh_addralign = 0;
+ rela_hdr->size = 0;
+ }
+ if (asect->flags & SEC_ALLOC)
{
- bfd_error = no_memory;
- return NULL;
+ this_hdr->sh_flags |= SHF_ALLOC;
+ if (asect->flags & SEC_LOAD)
+ {
+ /* @@ Do something with sh_type? */
+ }
}
+ if (!(asect->flags & SEC_READONLY))
+ this_hdr->sh_flags |= SHF_WRITE;
- /* FIXME: Any `wrong' exits below here will leak memory (tdata). */
+ if (asect->flags & SEC_CODE)
+ this_hdr->sh_flags |= SHF_EXECINSTR;
+}
- /* Now that we know the byte order, swap in the rest of the header */
- i_ehdrp = elf_elfheader (abfd);
- elf_swap_ehdr_in (abfd, &x_ehdr, i_ehdrp);
-#if DEBUG & 1
- elf_debug_file (i_ehdrp);
-#endif
+void
+write_relocs (abfd, sec, xxx)
+ bfd *abfd;
+ asection *sec;
+ PTR xxx;
+{
+ Elf_Internal_Shdr *rela_hdr;
+ Elf_External_Rela *outbound_relocas;
+ Elf_External_Rel *outbound_relocs;
+ int idx;
+ int use_rela_p = get_elf_backend_data (abfd)->use_rela_p;
- /* If there is no section header table, we're hosed. */
- if (i_ehdrp->e_shoff == 0)
- goto wrong;
+malloc(0);
+ if ((sec->flags & SEC_RELOC) == 0)
+ return;
+ /* Flags are sometimes inconsistent. */
+ if (sec->reloc_count == 0)
+ return;
- if (i_ehdrp->e_type == ET_EXEC || i_ehdrp->e_type == ET_DYN)
- abfd->flags |= EXEC_P;
+ rela_hdr = &elf_section_data (sec)->rel_hdr;
- /* Retrieve the architecture information from the xvec and verify
- that it matches the machine info stored in the ELF header.
- This allows us to resolve ambiguous formats that might not
- otherwise be distinguishable. */
+ rela_hdr->sh_size = rela_hdr->sh_entsize * sec->reloc_count;
+ rela_hdr->contents = (void *) bfd_alloc (abfd, rela_hdr->sh_size);
- ebd = get_elf_backend_data (abfd);
- switch (i_ehdrp->e_machine)
- {
- default:
- case EM_NONE:
- case EM_M32:
- /* Arguably EM_M32 should be bfd_arch_obscure, but then we would
- need both an elf32-obscure target and an elf32-unknown target.
- The distinction is probably not worth worrying about. */
- if (ebd->arch != bfd_arch_unknown)
- goto wrong;
- bfd_default_set_arch_mach (abfd, bfd_arch_unknown, 0);
- break;
- case EM_SPARC:
- if (ebd->arch != bfd_arch_sparc)
- goto wrong;
- bfd_default_set_arch_mach (abfd, bfd_arch_sparc, 0);
- break;
+ /* orelocation has the data, reloc_count has the count... */
+ if (use_rela_p)
+ {
+ outbound_relocas = (Elf_External_Rela *) rela_hdr->contents;
- /* start-sanitize-v9 */
- case EM_SPARC64: /* v9 */
- if (ebd->arch != bfd_arch_sparc) /* v9 */
- goto wrong; /* v9 */
- bfd_default_set_arch_mach (abfd, bfd_arch_sparc, 0); /* v9 */
- break; /* v9 */
- /* end-sanitize-v9 */
+ for (idx = 0; idx < sec->reloc_count; idx++)
+ {
+ Elf_Internal_Rela dst_rela;
+ Elf_External_Rela *src_rela;
+ arelent *ptr;
+ asymbol *sym;
- case EM_386:
- if (ebd->arch != bfd_arch_i386)
- goto wrong;
- bfd_default_set_arch_mach (abfd, bfd_arch_i386, 0);
- break;
- case EM_68K:
- if (ebd->arch != bfd_arch_m68k)
- goto wrong;
- bfd_default_set_arch_mach (abfd, bfd_arch_m68k, 0);
- break;
- case EM_88K:
- if (ebd->arch != bfd_arch_m88k)
- goto wrong;
- bfd_default_set_arch_mach (abfd, bfd_arch_m88k, 0);
- break;
- case EM_860:
- if (ebd->arch != bfd_arch_i860)
- goto wrong;
- bfd_default_set_arch_mach (abfd, bfd_arch_i860, 0);
- break;
- case EM_MIPS:
- if (ebd->arch != bfd_arch_mips)
- goto wrong;
- bfd_default_set_arch_mach (abfd, bfd_arch_mips, 0);
- break;
- case EM_HPPA:
- if (ebd->arch != bfd_arch_hppa)
- goto wrong;
- bfd_default_set_arch_mach (abfd, bfd_arch_hppa, 0);
- break;
- }
+ ptr = sec->orelocation[idx];
+ src_rela = outbound_relocas + idx;
+ if (!(abfd->flags & EXEC_P))
+ dst_rela.r_offset = ptr->address - sec->vma;
+ else
+ dst_rela.r_offset = ptr->address;
- /* Allocate space for a copy of the section header table in
- internal form, seek to the section header table in the file,
- read it in, and convert it to internal form. As a simple sanity
- check, verify that the what BFD thinks is the size of each section
- header table entry actually matches the size recorded in the file. */
+ sym = *ptr->sym_ptr_ptr;
+#if 0
+ /* I think this bit is wrong. But doing it right here means
+ fixing bfd_perform_relocation, and verifying that it doesn't
+ break other targets. Sigh.
+
+ Problem I'm trying to solve here: `ld -r' tends to get
+ offset of target symbol in output-file section put into
+ addend, but retains the original symbol, so the net
+ result is doubling of that offset. */
+ if (!bfd_is_com_section (sym->section)
+ && sym->section != &bfd_und_section)
+ {
+ /* Could adjust either the offset or the symbol here.
+ I'm pretty indifferent. */
+ sym = sym->section->symbol;
+ }
+#endif
+ dst_rela.r_info
+ = ELF_R_INFO (elf_symbol_from_bfd_symbol (abfd, &sym),
+ ptr->howto->type);
- if (i_ehdrp->e_shentsize != sizeof (x_shdr))
- goto wrong;
- i_shdrp = (Elf_Internal_Shdr *)
- bfd_alloc (abfd, sizeof (*i_shdrp) * i_ehdrp->e_shnum);
- if (!i_shdrp)
- {
- bfd_error = no_memory;
- return NULL;
- }
- if (bfd_seek (abfd, i_ehdrp->e_shoff, SEEK_SET) == -1)
- {
- bfd_error = system_call_error;
- return NULL;
- }
- for (shindex = 0; shindex < i_ehdrp->e_shnum; shindex++)
- {
- if (bfd_read ((PTR) & x_shdr, sizeof x_shdr, 1, abfd)
- != sizeof (x_shdr))
- {
- bfd_error = system_call_error;
- return NULL;
+ dst_rela.r_addend = ptr->addend;
+ elf_swap_reloca_out (abfd, &dst_rela, src_rela);
+malloc(0);
+ }
}
- elf_swap_shdr_in (abfd, &x_shdr, i_shdrp + shindex);
- }
-
- elf_elfsections (abfd) = i_shdrp;
+ else
+ /* REL relocations */
+ {
+ outbound_relocs = (Elf_External_Rel *) rela_hdr->contents;
- /* Read in the string table containing the names of the sections. We
- will need the base pointer to this table later. */
- /* We read this inline now, so that we don't have to go through
- bfd_section_from_shdr with it (since this particular strtab is
- used to find all of the ELF section names.) */
+ for (idx = 0; idx < sec->reloc_count; idx++)
+ {
+ Elf_Internal_Rel dst_rel;
+ Elf_External_Rel *src_rel;
+ arelent *ptr;
- shstrtab = elf_get_str_section (abfd, i_ehdrp->e_shstrndx);
- if (!shstrtab)
- return NULL;
+ ptr = sec->orelocation[idx];
+ src_rel = outbound_relocs + idx;
+ if (!(abfd->flags & EXEC_P))
+ dst_rel.r_offset = ptr->address - sec->vma;
+ else
+ dst_rel.r_offset = ptr->address;
+
+ dst_rel.r_info
+ = ELF_R_INFO (elf_symbol_from_bfd_symbol (abfd, ptr->sym_ptr_ptr),
+ ptr->howto->type);
+
+ elf_swap_reloc_out (abfd, &dst_rel, src_rel);
+
+ /* Update the addend -- FIXME add 64 bit support. */
+ bfd_put_32 (abfd, ptr->addend,
+ (unsigned char *) (elf_section_data (sec)->this_hdr.contents)
+ + dst_rel.r_offset);
+ }
+ }
+}
- /* Once all of the section headers have been read and converted, we
- can start processing them. Note that the first section header is
- a dummy placeholder entry, so we ignore it.
+static void
+fix_up_strtabs (abfd, asect, obj)
+ bfd *abfd;
+ asection *asect;
+ PTR obj;
+{
+ Elf_Internal_Shdr *this_hdr = &elf_section_data (asect)->this_hdr;
+ int this_idx = elf_section_data(asect)->this_idx;
- We also watch for the symbol table section and remember the file
- offset and section size for both the symbol table section and the
- associated string table section. */
+ /* @@ Check flags! */
+ if (!strncmp (asect->name, ".stab", 5)
+ && !strcmp ("str", asect->name + strlen (asect->name) - 3))
+ {
+ size_t len = strlen (asect->name) + 1;
+ char *s = alloca (len);
+ strcpy (s, asect->name);
+ s[len - 4] = 0;
+ asect = bfd_get_section_by_name (abfd, s);
+ if (!asect)
+ abort ();
+ elf_section_data(asect)->this_hdr.sh_link = this_idx;
- for (shindex = 1; shindex < i_ehdrp->e_shnum; shindex++)
- {
- bfd_section_from_shdr (abfd, shindex);
+ /* @@ Assuming 32 bits! */
+ this_hdr->sh_entsize = 0xc;
}
+}
- /* Remember the entry point specified in the ELF file header. */
+static void
+DEFUN (elf_fake_sections, (abfd, asect, obj),
+ bfd * abfd AND
+ asection * asect AND
+ PTR obj)
+{
+ /* most of what is in bfd_shdr_from_section goes in here... */
+ /* and all of these sections generate at *least* one ELF section. */
- bfd_get_start_address (abfd) = i_ehdrp->e_entry;
+ Elf_Internal_Shdr *this_hdr;
+ this_hdr = &elf_section_data (asect)->this_hdr;
+ this_hdr->sh_name =
+ bfd_add_to_strtab (abfd, elf_shstrtab (abfd), asect->name);
+ /* We need to log the type *now* so that elf_section_from_bfd_section
+ can find us... have to set rawdata too. */
+ this_hdr->rawdata = (void *) asect;
+ this_hdr->sh_addralign = 1 << asect->alignment_power;
+ if ((asect->flags & SEC_ALLOC) && (asect->flags & SEC_LOAD))
+ this_hdr->sh_type = SHT_PROGBITS;
+ /* @@ Select conditions correctly! */
+ else if (!strcmp (asect->name, ".bss"))
+ this_hdr->sh_type = SHT_NOBITS;
+ else
+ /* what *do* we put here? */
+ this_hdr->sh_type = SHT_PROGBITS;
+
+ this_hdr->sh_flags = 0;
+ this_hdr->sh_addr = 0;
+ this_hdr->sh_size = 0;
+ this_hdr->sh_entsize = 0;
+ this_hdr->sh_info = 0;
+ this_hdr->sh_link = 0;
+ this_hdr->sh_offset = 0;
+ this_hdr->size = 0;
- return abfd->xvec;
-}
+ {
+ /* Emit a strtab and symtab, and possibly a reloc section. */
+ Elf_Internal_Shdr *rela_hdr;
+ Elf_Internal_Shdr *symstrtab_hdr;
-/*
- Takes a bfd and a symbol, returns a pointer to the elf specific area
- of the symbol if there is one.
- */
-static INLINE elf_symbol_type *
-DEFUN (elf_symbol_from, (ignore_abfd, symbol),
- bfd * ignore_abfd AND
- asymbol * symbol)
-{
- if (symbol->the_bfd->xvec->flavour != bfd_target_elf_flavour)
- return 0;
+ /* Note that only one symtab is used, so just remember it
+ for now. */
- if (symbol->the_bfd->tdata.elf_obj_data == (struct elf_obj_tdata *) NULL)
- return 0;
+ if ((asect->flags & SEC_RELOC)
+ /* inconsistent flags... */
+ && asect->reloc_count > 0)
+ {
+ int use_rela_p = get_elf_backend_data (abfd)->use_rela_p;
- return (elf_symbol_type *) symbol;
+ rela_hdr = &elf_section_data (asect)->rel_hdr;
+ rela_hdr->sh_name =
+ bfd_add_2_to_strtab (abfd, elf_shstrtab (abfd),
+ use_rela_p ? ".rela" : ".rel",
+ asect->name);
+ rela_hdr->sh_type = use_rela_p ? SHT_RELA : SHT_REL;
+ rela_hdr->sh_entsize = (use_rela_p
+ ? sizeof (Elf_External_Rela)
+ : sizeof (Elf_External_Rel));
+
+ rela_hdr->sh_flags = 0;
+ rela_hdr->sh_addr = 0;
+ rela_hdr->sh_size = 0;
+ rela_hdr->sh_offset = 0;
+ rela_hdr->sh_addralign = 0;
+ rela_hdr->size = 0;
+ }
+ }
+ if (asect->flags & SEC_ALLOC)
+ {
+ this_hdr->sh_flags |= SHF_ALLOC;
+ if (asect->flags & SEC_LOAD)
+ {
+ /* @@ Do something with sh_type? */
+ }
+ }
+ if (!(asect->flags & SEC_READONLY))
+ this_hdr->sh_flags |= SHF_WRITE;
+ if (asect->flags & SEC_CODE)
+ this_hdr->sh_flags |= SHF_EXECINSTR;
}
-/* Core files are simply standard ELF formatted files that partition
- the file using the execution view of the file (program header table)
- rather than the linking view. In fact, there is no section header
- table in a core file.
- The process status information (including the contents of the general
- register set) and the floating point register set are stored in a
- segment of type PT_NOTE. We handcraft a couple of extra bfd sections
- that allow standard bfd access to the general registers (.reg) and the
- floating point registers (.reg2).
+/*
+xxxINTERNAL_FUNCTION
+ bfd_elf_locate_sh
- */
+xxxSYNOPSIS
+ struct elf_internal_shdr *bfd_elf_locate_sh (bfd *abfd,
+ struct strtab *strtab,
+ struct elf_internal_shdr *shdrp,
+ CONST char *name);
-bfd_target *
-DEFUN (elf_core_file_p, (abfd), bfd * abfd)
-{
- Elf_External_Ehdr x_ehdr; /* Elf file header, external form */
- Elf_Internal_Ehdr *i_ehdrp; /* Elf file header, internal form */
- Elf_External_Phdr x_phdr; /* Program header table entry, external form */
- Elf_Internal_Phdr *i_phdrp; /* Program header table, internal form */
- unsigned int phindex;
+xxxDESCRIPTION
+ Helper function to locate an ELF section header given the
+ name of a BFD section.
+*/
- /* Read in the ELF header in external format. */
+static struct elfNAME (internal_shdr) *
+DEFUN (elf_locate_sh, (abfd, strtab, shdrp, name),
+ bfd * abfd AND
+ struct strtab *strtab AND
+ struct elfNAME (internal_shdr) *shdrp AND
+ CONST char *name)
+{
+ Elf_Internal_Shdr *gotit = NULL;
+ int max, i;
- if (bfd_read ((PTR) & x_ehdr, sizeof (x_ehdr), 1, abfd) != sizeof (x_ehdr))
+ if (shdrp != NULL && strtab != NULL)
{
- bfd_error = system_call_error;
- return NULL;
+ max = elf_elfheader (abfd)->e_shnum;
+ for (i = 1; i < max; i++)
+ {
+ if (!strcmp (strtab->tab + shdrp[i].sh_name, name))
+ {
+ gotit = &shdrp[i];
+ }
+ }
}
+ return gotit;
+}
- /* Now check to see if we have a valid ELF file, and one that BFD can
- make use of. The magic number must match, the address size ('class')
- and byte-swapping must match our XVEC entry, and it must have a
- program header table (FIXME: See comments re segments at top of this
- file). */
+/* Map symbol from it's internal number to the external number, moving
+ all local symbols to be at the head of the list. */
- if (elf_file_p (&x_ehdr) == false)
+static INLINE int
+sym_is_global (sym)
+ asymbol *sym;
+{
+ if (sym->flags & BSF_GLOBAL)
{
- wrong:
- bfd_error = wrong_format;
- return NULL;
+ if (sym->flags & BSF_LOCAL)
+ abort ();
+ return 1;
}
+ if (sym->section == &bfd_und_section)
+ return 1;
+ if (bfd_is_com_section (sym->section))
+ return 1;
+ if (sym->flags & (BSF_LOCAL | BSF_SECTION_SYM | BSF_FILE))
+ return 0;
+ return 0;
+}
- /* FIXME, Check EI_VERSION here ! */
-
- {
-#if ARCH_SIZE == 32
- int desired_address_size = ELFCLASS32;
-#endif
-#if ARCH_SIZE == 64
- int desired_address_size = ELFCLASS64;
-#endif
+static void
+DEFUN (elf_map_symbols, (abfd), bfd * abfd)
+{
+ int symcount = bfd_get_symcount (abfd);
+ asymbol **syms = bfd_get_outsymbols (abfd);
+ int num_locals = 0;
+ int num_globals = 0;
+ int num_locals2 = 0;
+ int num_globals2 = 0;
+ int num_sections = 0;
+ int *symtab_map;
+ int idx;
+ asection *asect;
- if (x_ehdr.e_ident[EI_CLASS] != desired_address_size)
- goto wrong;
- }
+#ifdef DEBUG
+ fprintf (stderr, "elf_map_symbols\n");
+ fflush (stderr);
+#endif
- /* Switch xvec to match the specified byte order. */
- switch (x_ehdr.e_ident[EI_DATA])
+ /* Add local symbols for each allocated section
+ FIXME -- we should only put out symbols for sections that
+ are actually relocated against. */
+ for (asect = abfd->sections; asect; asect = asect->next)
{
- case ELFDATA2MSB: /* Big-endian */
- if (abfd->xvec->byteorder_big_p == false)
- goto wrong;
- break;
- case ELFDATA2LSB: /* Little-endian */
- if (abfd->xvec->byteorder_big_p == true)
- goto wrong;
- break;
- case ELFDATANONE: /* No data encoding specified */
- default: /* Unknown data encoding specified */
- goto wrong;
+ if (/*asect->flags & (SEC_LOAD | SEC_DATA | SEC_CODE)*/1)
+ num_sections++;
}
- /* Allocate an instance of the elf_obj_tdata structure and hook it up to
- the tdata pointer in the bfd. */
-
- elf_tdata (abfd) =
- (struct elf_obj_tdata *) bfd_zalloc (abfd, sizeof (struct elf_obj_tdata));
- if (elf_tdata (abfd) == NULL)
+ if (num_sections)
{
- bfd_error = no_memory;
- return NULL;
- }
-
- /* FIXME, `wrong' returns from this point onward, leak memory. */
+ if (syms)
+ syms = (asymbol **) bfd_realloc (abfd, syms,
+ ((symcount + num_sections + 1)
+ * sizeof (asymbol *)));
+ else
+ syms = (asymbol **) bfd_alloc (abfd,
+ (num_sections + 1) * sizeof (asymbol *));
- /* Now that we know the byte order, swap in the rest of the header */
- i_ehdrp = elf_elfheader (abfd);
- elf_swap_ehdr_in (abfd, &x_ehdr, i_ehdrp);
-#if DEBUG & 1
- elf_debug_file (i_ehdrp);
-#endif
+ for (asect = abfd->sections; asect; asect = asect->next)
+ {
+ if (/* asect->flags & (SEC_LOAD | SEC_DATA | SEC_CODE) */ 1)
+ {
+ asymbol *sym = syms[symcount++] = bfd_make_empty_symbol (abfd);
+ sym->the_bfd = abfd;
+ sym->name = asect->name;
+ sym->value = asect->vma;
+ sym->flags = BSF_SECTION_SYM;
+ sym->section = asect;
+ }
+ }
- /* If there is no program header, or the type is not a core file, then
- we are hosed. */
- if (i_ehdrp->e_phoff == 0 || i_ehdrp->e_type != ET_CORE)
- goto wrong;
+ syms[symcount] = (asymbol *) 0;
+ bfd_set_symtab (abfd, syms, symcount);
+ }
- /* Allocate space for a copy of the program header table in
- internal form, seek to the program header table in the file,
- read it in, and convert it to internal form. As a simple sanity
- check, verify that the what BFD thinks is the size of each program
- header table entry actually matches the size recorded in the file. */
+ elf_symtab_map (abfd) = symtab_map
+ = (int *) bfd_alloc (abfd, symcount * sizeof (int *));
- if (i_ehdrp->e_phentsize != sizeof (x_phdr))
- goto wrong;
- i_phdrp = (Elf_Internal_Phdr *)
- bfd_alloc (abfd, sizeof (*i_phdrp) * i_ehdrp->e_phnum);
- if (!i_phdrp)
- {
- bfd_error = no_memory;
- return NULL;
- }
- if (bfd_seek (abfd, i_ehdrp->e_phoff, SEEK_SET) == -1)
+ /* Identify and classify all of the symbols. */
+ for (idx = 0; idx < symcount; idx++)
{
- bfd_error = system_call_error;
- return NULL;
+ if (!sym_is_global (syms[idx]))
+ num_locals++;
+ else
+ num_globals++;
}
- for (phindex = 0; phindex < i_ehdrp->e_phnum; phindex++)
+
+ /* Now provide mapping information. Add +1 for skipping over the
+ dummy symbol. */
+ for (idx = 0; idx < symcount; idx++)
{
- if (bfd_read ((PTR) & x_phdr, sizeof (x_phdr), 1, abfd)
- != sizeof (x_phdr))
- {
- bfd_error = system_call_error;
- return NULL;
- }
- elf_swap_phdr_in (abfd, &x_phdr, i_phdrp + phindex);
+ if (!sym_is_global (syms[idx]))
+ symtab_map[idx] = 1 + num_locals2++;
+ else
+ symtab_map[idx] = 1 + num_locals + num_globals2++;
}
- /* Once all of the program headers have been read and converted, we
- can start processing them. */
+ elf_num_locals (abfd) = num_locals;
+ elf_num_globals (abfd) = num_globals;
+}
- for (phindex = 0; phindex < i_ehdrp->e_phnum; phindex++)
- {
- bfd_section_from_phdr (abfd, i_phdrp + phindex, phindex);
- if ((i_phdrp + phindex)->p_type == PT_NOTE)
- {
- elf_corefile_note (abfd, i_phdrp + phindex);
- }
- }
+static void assign_section_numbers ();
+static void assign_file_positions_except_relocs ();
- /* Remember the entry point specified in the ELF file header. */
+static boolean
+DEFUN (elf_compute_section_file_positions, (abfd), bfd * abfd)
+{
+ Elf_Internal_Ehdr *i_ehdrp; /* Elf file header, internal form */
+ Elf_Internal_Shdr *i_shdrp; /* Section header table, internal form */
+ struct strtab *shstrtab;
+ int count, maxsections;
- bfd_get_start_address (abfd) = i_ehdrp->e_entry;
+ bfd_map_over_sections (abfd, elf_fake_sections, 0);
- return abfd->xvec;
-}
+ assign_section_numbers (abfd);
-/*
- Create ELF output from BFD sections.
+ bfd_map_over_sections (abfd, elf_make_sections, 0);
- Essentially, just create the section header and forget about the program
- header for now.
+ bfd_map_over_sections (abfd, fix_up_strtabs, 0); /* .stab/.stabstr &c */
-*/
+ swap_out_syms (abfd);
-#if 0 /* not used */
-static int
-elf_idx_of_sym (abfd, sym)
- bfd *abfd;
- asymbol *sym;
+ assign_file_positions_except_relocs (abfd);
+
+ return true;
+}
+
+static boolean
+DEFUN (elf_write_phdrs, (abfd, i_ehdrp, i_phdrp, phdr_cnt),
+ bfd * abfd AND
+ Elf_Internal_Ehdr * i_ehdrp AND
+ Elf_Internal_Phdr * i_phdrp AND
+ Elf32_Half phdr_cnt)
{
+ /* first program header entry goes after the file header */
+ int outbase = i_ehdrp->e_ehsize;
int i;
- for (i = 0; i < abfd->symcount; i++)
+ Elf_External_Phdr x_phdr;
+
+ for (i = 0; i < phdr_cnt; i++)
{
- if (sym == (asymbol *) abfd->outsymbols[i])
- {
- /* sanity check */
- BFD_ASSERT ((strcmp (sym->name, abfd->outsymbols[i]->name) == 0)
- || (strlen (sym->name) == 0));
- return i + 1;
- }
+ elf_swap_phdr_out (abfd, i_phdrp + i, &x_phdr);
+ bfd_seek (abfd, outbase, SEEK_SET);
+ bfd_write ((PTR) & x_phdr, sizeof (x_phdr), 1, abfd);
+ outbase += sizeof (x_phdr);
}
- return STN_UNDEF;
+
+ return true;
}
-#endif
-static void
-DEFUN (elf_make_sections, (abfd, asect, obj),
+static Elf_Internal_Phdr *
+DEFUN (elf_build_phdrs, (abfd, i_ehdrp, i_shdrp, phdr_cnt),
bfd * abfd AND
- asection * asect AND
- PTR obj)
+ Elf_Internal_Ehdr * i_ehdrp AND
+ Elf_Internal_Shdr * i_shdrp AND
+ Elf32_Half * phdr_cnt)
{
- elf_sect_thunk *thunk = (elf_sect_thunk *) obj;
- /* most of what is in bfd_shdr_from_section goes in here... */
- /* and all of these sections generate at *least* one ELF section. */
- int this_section;
+ Elf_Internal_Phdr *phdr_buf;
int idx;
+ /* NOTES:
+ 1. The program header table is *not* loaded as part
+ of the memory image of the program. If this
+ changes later, the PT_PHDR entry must come first.
+ 2. there is currently no support for program header
+ entries of type PT_PHDR, PT_DYNAMIC, PT_INTERP,
+ or PT_SHLIB. */
- Elf_Internal_Shdr *this_hdr;
- this_section = elf_section_from_bfd_section (abfd, asect);
- this_hdr = &thunk->i_shdrp[this_section];
+ /* A. Figure out how many program header table entries are needed
+ 1. PT_LOAD for the text segment
+ 2. PT_LOAD for the data segment
+ Then, reserve space for one more pointer. This will be NULL
+ to indicate the end of the program header table. */
- this_hdr->sh_addr = asect->vma;
- this_hdr->sh_size = asect->_raw_size;
- /* contents already set by elf_set_section_contents */
+#ifdef PHDRS_INCLUDED
+ *phdr_cnt = 4;
+#else
+ /* XXX right now, execve() expects exactly 3 PT entries on HPPA-OSF. */
+ *phdr_cnt = 3;
+#endif
- if (asect->flags & SEC_RELOC)
- {
- /* emit a reloc section, and thus strtab and symtab... */
- Elf_Internal_Shdr *rela_hdr;
- Elf_Internal_Shdr *symtab_hdr;
- Elf_External_Rela *outbound_relocas;
- Elf_External_Rel *outbound_relocs;
- int rela_section;
- int use_rela_p = get_elf_backend_data (abfd)->use_rela_p;
+ phdr_buf = (Elf_Internal_Phdr *) bfd_xmalloc (((*phdr_cnt) + 1)
+ *
+ sizeof (Elf_Internal_Phdr));
- symtab_hdr = &thunk->i_shdrp[thunk->symtab_section];
+ idx = 0;
+#ifdef PHDRS_INCLUDED
+ /* B. Fill in the PT_PHDR entry. */
- if (thunk->symtab_section == this_section + 1)
- rela_section = thunk->symtab_section + 2; /* symtab + symstrtab */
- else
- rela_section = this_section + 1;
- rela_hdr = &thunk->i_shdrp[rela_section];
- rela_hdr->sh_link = thunk->symtab_section;
- rela_hdr->sh_info = this_section;
+ idx++;
+#endif
- /* orelocation has the data, reloc_count has the count... */
- if (use_rela_p)
- {
- rela_hdr->sh_type = SHT_RELA;
- rela_hdr->sh_entsize = sizeof (Elf_External_Rela);
- rela_hdr->sh_size = rela_hdr->sh_entsize * asect->reloc_count;
- outbound_relocas = (Elf_External_Rela *) bfd_alloc (abfd, rela_hdr->sh_size);
-
- for (idx = 0; idx < asect->reloc_count; idx++)
- {
- Elf_Internal_Rela dst_rela;
- Elf_External_Rela *src_rela;
- arelent *ptr;
-
- ptr = asect->orelocation[idx];
- src_rela = outbound_relocas + idx;
- if (!(abfd->flags & EXEC_P))
- dst_rela.r_offset = ptr->address - asect->vma;
- else
- dst_rela.r_offset = ptr->address;
-
- dst_rela.r_info
- = ELF_R_INFO (elf_symbol_from_bfd_symbol (abfd, ptr->sym_ptr_ptr),
- ptr->howto->type);
-
- dst_rela.r_addend = ptr->addend;
- elf_swap_reloca_out (abfd, &dst_rela, src_rela);
- }
+ /* C. Fill in the PT_LOAD entry for the text segment. */
- rela_hdr->contents = (void *) outbound_relocas;
+ phdr_buf[idx].p_type = PT_LOAD;
- rela_hdr->sh_flags = 0;
- rela_hdr->sh_addr = 0;
- rela_hdr->sh_offset = 0;
- rela_hdr->sh_addralign = 0;
- rela_hdr->size = 0;
- }
- else
- /* REL relocations */
- {
- rela_hdr->sh_type = SHT_REL;
- rela_hdr->sh_entsize = sizeof (Elf_External_Rel);
- rela_hdr->sh_size = rela_hdr->sh_entsize * asect->reloc_count;
- outbound_relocs = (Elf_External_Rel *)
- bfd_alloc (abfd, rela_hdr->sh_size);
-
- for (idx = 0; idx < asect->reloc_count; idx++)
- {
- Elf_Internal_Rel dst_rel;
- Elf_External_Rel *src_rel;
- arelent *ptr;
-
- ptr = asect->orelocation[idx];
- src_rel = outbound_relocs + idx;
- if (!(abfd->flags & EXEC_P))
- dst_rel.r_offset = ptr->address - asect->vma;
- else
- dst_rel.r_offset = ptr->address;
-
- dst_rel.r_info
- = ELF_R_INFO (elf_symbol_from_bfd_symbol (abfd, ptr->sym_ptr_ptr),
- ptr->howto->type);
-
- elf_swap_reloc_out (abfd, &dst_rel, src_rel);
-
- /* Update the addend -- FIXME add 64 bit support. */
-#ifdef DEBUG
- fprintf (stderr, "Updating addend: 0x%.8lx = %d, this_section = %d\n",
- (long) ((unsigned char *) (elf_elfsections (abfd)[this_section].contents)
- + dst_rel.r_offset), ptr->addend, this_section);
-#endif
-
- bfd_put_32 (abfd, ptr->addend,
- (unsigned char *) (elf_elfsections (abfd)[this_section].contents)
- + dst_rel.r_offset);
- }
- rela_hdr->contents = (void *) outbound_relocs;
+ /* get virtual/physical address from .text section */
+ phdr_buf[idx].p_vaddr = bfd_get_section_by_name (abfd, ".text")->vma;
+ phdr_buf[idx].p_paddr = 0; /* XXX */
- rela_hdr->sh_flags = 0;
- rela_hdr->sh_addr = 0;
- rela_hdr->sh_offset = 0;
- rela_hdr->sh_addralign = 0;
- rela_hdr->size = 0;
- }
- }
- if (asect->flags & SEC_ALLOC)
- {
- this_hdr->sh_flags |= SHF_ALLOC;
- if (asect->flags & SEC_LOAD)
- {
- /* @@ Do something with sh_type? */
- }
- }
- if (!(asect->flags & SEC_READONLY))
- this_hdr->sh_flags |= SHF_WRITE;
+ /* Ultimately, we would like the size of the .text load
+ segment to be the sum of the following sections:
+ the program header table itself
+ .interp
+ .hash
+ .dynsym
+ .dynstr
+ .rela.bss
+ .rela.plt
+ .init
+ .text
+ .fini
+ .rodata
+ But, right now, it will be the sum of the following sections:
+ .text
+ .rodata */
- if (asect->flags & SEC_CODE)
- this_hdr->sh_flags |= SHF_EXECINSTR;
+ {
+ static char *CONST ld_sect_names[] =
+ {".text", ".rodata", NULL};
+ int i;
+ int ld_size = 0;
+
+ for (i = 0; ld_sect_names[i]; i++)
+ {
+ asection *asect = bfd_get_section_by_name (abfd,
+ ld_sect_names[i]);
+
+ if (asect)
+ ld_size += bfd_section_size (abfd, asect);
+ }
+ phdr_buf[idx].p_filesz = ld_size;
+ /* XXX: need to fix this */
+ phdr_buf[idx].p_memsz = ld_size;
+ }
+ phdr_buf[idx].p_flags = PF_R + PF_X;
+ phdr_buf[idx].p_align =
+ bfd_get_section_by_name (abfd, ".text")->alignment_power;
+
+ idx++;
+
+ /* D. Fill in the PT_LOAD entry for the data segment. */
+
+ phdr_buf[idx].p_type = PT_LOAD;
+
+ /* get virtual/physical address from .data section */
+ phdr_buf[idx].p_vaddr = bfd_get_section_by_name (abfd, ".data")->vma;
+ phdr_buf[idx].p_paddr = 0; /* XXX */
+
+ /* Ultimately, we would like the size of the data load segment
+ to be the sum of the following sections:
+ the PT_DYNAMIC program header table entry
+ .plt
+ .data
+ .data1
+ .got
+ .dynamic
+ But, right now, it will be the sum of the following sections:
+ .data */
+
+ {
+ static char *CONST ld_sect_names[] =
+ {".data", NULL};
+ int i;
+ int ld_size = 0;
+
+ for (i = 0; ld_sect_names[i]; i++)
+ {
+ asection *asect = bfd_get_section_by_name (abfd,
+ ld_sect_names[i]);
+
+ if (asect)
+ ld_size += bfd_section_size (abfd, asect);
+ }
+ phdr_buf[idx].p_filesz = ld_size;
+ /* XXX: need to fix this */
+ phdr_buf[idx].p_memsz = ld_size;
+ }
+ phdr_buf[idx].p_flags = PF_R + PF_W + PF_X;
+ phdr_buf[idx].p_align
+ = bfd_get_section_by_name (abfd, ".data")->alignment_power;
+
+ idx++;
+
+ /* E. Fill in the PT_LOAD entry for the bss segment. */
+
+ phdr_buf[idx].p_type = PT_LOAD;
+
+ /* get virtual/physical address from .data section */
+ phdr_buf[idx].p_vaddr = bfd_get_section_by_name (abfd, ".bss")->vma;
+ phdr_buf[idx].p_paddr = 0; /* XXX */
+
+ {
+ static char *CONST ld_sect_names[] =
+ {".bss", NULL};
+ int i;
+ int ld_size = 0;
+
+ for (i = 0; ld_sect_names[i]; i++)
+ {
+ asection *asect = bfd_get_section_by_name (abfd,
+ ld_sect_names[i]);
+
+ if (asect)
+ ld_size += bfd_section_size (abfd, asect);
+ }
+ phdr_buf[idx].p_filesz = 0;
+ /* XXX: need to fix this */
+ phdr_buf[idx].p_memsz = ld_size;
+ }
+ phdr_buf[idx].p_flags = PF_R + PF_W + PF_X;
+ phdr_buf[idx].p_align
+ = bfd_get_section_by_name (abfd, ".bss")->alignment_power;
+
+ idx++;
+
+ /* F. Set up the "end of program header table" sentinel. */
+
+ memset ((char *) (phdr_buf + idx), 0, sizeof (Elf_Internal_Phdr));
+ idx++;
+
+ BFD_ASSERT (idx - 1 == *phdr_cnt);
+
+ return phdr_buf;
}
+static const Elf_Internal_Shdr null_shdr;
+
+/* Assign all ELF section numbers. The dummy first section is handled here
+ too. The link/info pointers for the standard section types are filled
+ in here too, while we're at it. (Link pointers for .stab sections are
+ not filled in here.) */
static void
-fix_up_strtabs (abfd, asect, obj)
+assign_section_numbers (abfd)
bfd *abfd;
- asection *asect;
- PTR obj;
{
- int this_section = elf_section_from_bfd_section (abfd, asect);
- elf_sect_thunk *thunk = (elf_sect_thunk *) obj;
- Elf_Internal_Shdr *this_hdr = &thunk->i_shdrp[this_section];
-
- /* @@ Check flags! */
- if (!strncmp (asect->name, ".stab", 5)
- && strcmp ("str", asect->name + strlen (asect->name) - 3))
- {
- asection *s;
- char strtab[100]; /* @@ fixed size buffer -- eliminate */
- int stridx;
+ struct elf_obj_tdata *t = elf_tdata (abfd);
+ asection *sec;
+ int section_number = 1;
+ int i;
+ Elf_Internal_Shdr **i_shdrp;
- strcpy (strtab, asect->name);
- strcat (strtab, "str");
+ t->shstrtab_hdr.sh_size = elf_shstrtab(abfd)->length;
+ t->shstrtab_hdr.contents = (void *) elf_shstrtab(abfd)->tab;
+ shstrtab_length_fixed = 1;
- s = bfd_get_section_by_name (abfd, strtab);
-#if 0
- fprintf (stderr, "`%s' -> 0x%x\n", strtab, s);
-#endif
- if (s)
+ t->shstrtab_section = section_number++;
+ elf_elfheader(abfd)->e_shstrndx = t->shstrtab_section;
+ if (abfd->symcount)
+ {
+ t->symtab_section = section_number++;
+ t->strtab_section = section_number++;
+ t->symtab_hdr.sh_link = t->strtab_section;
+ }
+ for (sec = abfd->sections; sec; sec = sec->next)
+ {
+ struct bfd_elf_section_data *d = elf_section_data (sec);
+ d->this_idx = section_number++;
+ if (sec->reloc_count != 0)
{
- Elf_Internal_Shdr *s2 = thunk->i_shdrp;
-
- for (stridx = 0; /* ?? */; s2++, stridx++)
- {
- if (!strcmp (strtab, s2->sh_name + elf_shstrtab (abfd)->tab))
- break;
- }
+ d->rel_idx = section_number++;
+ d->rel_hdr.sh_link = t->symtab_section;
+ d->rel_hdr.sh_info = d->this_idx;
}
else
- {
- stridx = 0;
-#if 0
- {
- asection *s2 = abfd->sections;
- fprintf (stderr, " not in:");
- while (s2)
- {
- fprintf (stderr, " %s", s2->name);
- s2 = s2->next;
- }
- fprintf (stderr, "\n");
- }
-#endif
- }
- this_hdr->sh_link = stridx;
- /* @@ Assuming 32 bits! */
- this_hdr->sh_entsize = 0xc;
+ d->rel_idx = 0;
+ /* No handling for per-section string tables currently. */
+ }
+ elf_elfheader(abfd)->e_shnum = section_number;
+
+ /* Set up the list of section header pointers, in agreement with the
+ indices. */
+ i_shdrp = bfd_alloc (abfd,
+ section_number * sizeof (Elf_Internal_Shdr *));
+ elf_elfsections(abfd) = i_shdrp;
+ for (i = 0; i < section_number; i++)
+ i_shdrp[i] = 0;
+
+ i_shdrp[0] = (Elf_Internal_Shdr *) &null_shdr;
+ i_shdrp[t->shstrtab_section] = &t->shstrtab_hdr;
+ if (abfd->symcount)
+ {
+ i_shdrp[t->symtab_section] = &t->symtab_hdr;
+ i_shdrp[t->strtab_section] = &t->strtab_hdr;
}
+ for (sec = abfd->sections; sec; sec = sec->next)
+ {
+ struct bfd_elf_section_data *d = elf_section_data (sec);
+ i_shdrp[d->this_idx] = &d->this_hdr;
+ if (d->rel_idx)
+ i_shdrp[d->rel_idx] = &d->rel_hdr;
+ }
+ /* Make sure we got everything.... */
+ for (i = 0; i < section_number; i++)
+ if (i_shdrp[i] == 0)
+ abort ();
+}
+
+static INLINE file_ptr
+assign_file_position_for_section (i_shdrp, offset)
+ Elf_Internal_Shdr *i_shdrp;
+ file_ptr offset;
+{
+ i_shdrp->sh_offset = offset;
+ offset += i_shdrp->sh_size;
+ return offset;
}
static void
-DEFUN (elf_fake_sections, (abfd, asect, obj),
- bfd * abfd AND
- asection * asect AND
- PTR obj)
+assign_file_positions_except_relocs (abfd)
+ bfd *abfd;
{
- elf_sect_thunk *thunk = (elf_sect_thunk *) obj;
- /* most of what is in bfd_shdr_from_section goes in here... */
- /* and all of these sections generate at *least* one ELF section. */
- int this_section;
-
- /* check if we're making a PROGBITS section... */
- /* if ((asect->flags & SEC_ALLOC) && (asect->flags & SEC_LOAD)) */
- /* this was too strict... what *do* we want to check here? */
- if (1)
- {
- Elf_Internal_Shdr *this_hdr;
- this_section = thunk->i_ehdr->e_shnum++;
- this_hdr = &thunk->i_shdrp[this_section];
- this_hdr->sh_name =
- bfd_add_to_strtab (abfd, thunk->shstrtab, asect->name);
- /* we need to log the type *now* so that elf_section_from_bfd_section
- can find us... have to set rawdata too. */
- this_hdr->rawdata = (void *) asect;
- this_hdr->sh_addralign = 1 << asect->alignment_power;
- if ((asect->flags & SEC_ALLOC) && (asect->flags & SEC_LOAD))
- this_hdr->sh_type = SHT_PROGBITS;
- /* @@ Select conditions correctly! */
- else if (!strcmp (asect->name, ".bss"))
- this_hdr->sh_type = SHT_NOBITS;
- else
- /* what *do* we put here? */
- this_hdr->sh_type = SHT_PROGBITS;
-
- this_hdr->sh_flags = 0;
- this_hdr->sh_addr = 0;
- this_hdr->sh_size = 0;
- this_hdr->sh_entsize = 0;
- this_hdr->sh_info = 0;
- this_hdr->sh_link = 0;
- this_hdr->sh_offset = 0;
- this_hdr->size = 0;
+ /* For now, we ignore the possibility of having program segments, which
+ may require some alignment in the file. That'll require padding, and
+ some interesting calculations to optimize file space usage.
- {
- /* Emit a strtab and symtab, and possibly a reloc section. */
- Elf_Internal_Shdr *rela_hdr;
- Elf_Internal_Shdr *symtab_hdr;
- Elf_Internal_Shdr *symstrtab_hdr;
- int rela_section;
- int symstrtab_section;
-
- /* Note that only one symtab is used, so just remember it
- for now. */
- if (!thunk->symtab_section)
- {
- thunk->symtab_section = thunk->i_ehdr->e_shnum++;
- symtab_hdr = &thunk->i_shdrp[thunk->symtab_section];
- symtab_hdr->sh_name =
- bfd_add_to_strtab (abfd, thunk->shstrtab, ".symtab");
- symtab_hdr->sh_type = SHT_SYMTAB;
- symtab_hdr->sh_entsize = sizeof (Elf_External_Sym);
-
- symstrtab_section = thunk->i_ehdr->e_shnum++;
- BFD_ASSERT (symstrtab_section == thunk->symtab_section + 1);
- symstrtab_hdr = &thunk->i_shdrp[symstrtab_section];
- symtab_hdr->sh_link = symstrtab_section;
- symstrtab_hdr->sh_name =
- bfd_add_to_strtab (abfd, thunk->shstrtab, ".strtab");
- symstrtab_hdr->sh_type = SHT_STRTAB;
-
- symtab_hdr->contents = 0;
- symtab_hdr->sh_flags = 0;
- symtab_hdr->sh_addr = 0;
- symtab_hdr->sh_offset = 0;
- symtab_hdr->sh_addralign = 0;
- symtab_hdr->size = 0;
- symstrtab_hdr->contents = 0;
- symstrtab_hdr->sh_size = 0;
- symstrtab_hdr->sh_flags = 0;
- symstrtab_hdr->sh_addr = 0;
- symstrtab_hdr->sh_entsize = 0;
- symstrtab_hdr->sh_link = 0;
- symstrtab_hdr->sh_info = 0;
- symstrtab_hdr->sh_offset = 0;
- symstrtab_hdr->sh_addralign = 0;
- symstrtab_hdr->size = 0;
- }
- else
- symtab_hdr = &thunk->i_shdrp[thunk->symtab_section];
+ Also, since the application may change the list of relocations for
+ a given section, we don't figure them in here. We'll put them at the
+ end of the file, at positions computed during bfd_close.
- if (asect->flags & SEC_RELOC)
- {
- int use_rela_p = get_elf_backend_data (abfd)->use_rela_p;
-
- rela_section = thunk->i_ehdr->e_shnum++;
- rela_hdr = &thunk->i_shdrp[rela_section];
- rela_hdr->sh_name =
- bfd_add_2_to_strtab (abfd, thunk->shstrtab,
- use_rela_p ? ".rela" : ".rel",
- asect->name);
- rela_hdr->sh_type = use_rela_p ? SHT_RELA : SHT_REL;
- rela_hdr->sh_link = thunk->symtab_section;
- rela_hdr->sh_info = this_section;
- rela_hdr->sh_entsize = sizeof (Elf_External_Rela);
-
- rela_hdr->sh_flags = 0;
- rela_hdr->sh_addr = 0;
- rela_hdr->sh_size = 0;
- rela_hdr->sh_offset = 0;
- rela_hdr->sh_addralign = 0;
- rela_hdr->size = 0;
- }
- }
- if (asect->flags & SEC_ALLOC)
+ The order, for now: <ehdr> <shdr> <sec1> <sec2> <sec3> ... <rel1> ... */
+
+ file_ptr off;
+ int i;
+ Elf_Internal_Shdr **i_shdrpp = elf_elfsections (abfd);
+ Elf_Internal_Shdr *i_shdrp;
+ Elf_Internal_Ehdr *i_ehdrp = elf_elfheader (abfd);
+
+ off = i_ehdrp->e_ehsize;
+ i_ehdrp->e_shoff = off;
+ off += i_ehdrp->e_shnum * i_ehdrp->e_shentsize;
+ off = assign_file_position_for_section (&elf_tdata(abfd)->shstrtab_hdr, off);
+ off = assign_file_position_for_section (&elf_tdata(abfd)->symtab_hdr, off);
+ off = assign_file_position_for_section (&elf_tdata(abfd)->strtab_hdr, off);
+ for (i = 0; i < i_ehdrp->e_shnum; i++)
+ {
+ i_shdrp = i_shdrpp[i];
+ if (i_shdrp->sh_type == SHT_REL || i_shdrp->sh_type == SHT_RELA)
{
- this_hdr->sh_flags |= SHF_ALLOC;
- if (asect->flags & SEC_LOAD)
- {
- /* @@ Do something with sh_type? */
- }
+ i_shdrp->sh_offset = -1;
+ continue;
}
- if (!(asect->flags & SEC_READONLY))
- this_hdr->sh_flags |= SHF_WRITE;
- if (asect->flags & SEC_CODE)
- this_hdr->sh_flags |= SHF_EXECINSTR;
+ off = assign_file_position_for_section (i_shdrp, off);
}
+ elf_tdata (abfd)->next_file_pos = off;
}
+static boolean
+prep_headers (abfd)
+ bfd *abfd;
+{
+ Elf_External_Ehdr x_ehdr; /* Elf file header, external form */
+ Elf_Internal_Ehdr *i_ehdrp; /* Elf file header, internal form */
+ Elf_Internal_Phdr *i_phdrp = 0; /* Program header table, internal form */
+ Elf_External_Shdr *x_shdrp; /* Section header table, external form */
+ Elf_Internal_Shdr **i_shdrp; /* Section header table, internal form */
-/*
-xxxINTERNAL_FUNCTION
- bfd_elf_locate_sh
+ int count;
+ int scnt;
+ struct strtab *shstrtab;
-xxxSYNOPSIS
- struct elf_internal_shdr *bfd_elf_locate_sh (bfd *abfd,
- struct strtab *strtab,
- struct elf_internal_shdr *shdrp,
- CONST char *name);
+ i_ehdrp = elf_elfheader (abfd);
+ i_shdrp = elf_elfsections (abfd);
-xxxDESCRIPTION
- Helper function to locate an ELF section header given the
- name of a BFD section.
-*/
+ shstrtab = bfd_new_strtab (abfd);
+ elf_shstrtab (abfd) = shstrtab;
-static struct elfNAME (internal_shdr) *
-DEFUN (elf_locate_sh, (abfd, strtab, shdrp, name),
- bfd * abfd AND
- struct strtab *strtab AND
- struct elfNAME (internal_shdr) *shdrp AND
- CONST char *name)
-{
- Elf_Internal_Shdr *gotit = NULL;
- int max, i;
+ i_ehdrp->e_ident[EI_MAG0] = ELFMAG0;
+ i_ehdrp->e_ident[EI_MAG1] = ELFMAG1;
+ i_ehdrp->e_ident[EI_MAG2] = ELFMAG2;
+ i_ehdrp->e_ident[EI_MAG3] = ELFMAG3;
- if (shdrp != NULL && strtab != NULL)
- {
- max = elf_elfheader (abfd)->e_shnum;
- for (i = 1; i < max; i++)
- {
- if (!strcmp (strtab->tab + shdrp[i].sh_name, name))
- {
- gotit = &shdrp[i];
- }
- }
- }
- return gotit;
-}
+ i_ehdrp->e_ident[EI_CLASS] = ELFCLASS;
+ i_ehdrp->e_ident[EI_DATA] =
+ abfd->xvec->byteorder_big_p ? ELFDATA2MSB : ELFDATA2LSB;
+ i_ehdrp->e_ident[EI_VERSION] = EV_CURRENT;
-/* Map symbol from it's internal number to the external number, moving
- all local symbols to be at the head of the list. */
+ for (count = EI_PAD; count < EI_NIDENT; count++)
+ i_ehdrp->e_ident[count] = 0;
-static INLINE int
-sym_is_global (sym)
- asymbol *sym;
-{
- if (sym->flags & BSF_GLOBAL)
+ i_ehdrp->e_type = (abfd->flags & EXEC_P) ? ET_EXEC : ET_REL;
+ switch (bfd_get_arch (abfd))
{
- if (sym->flags & BSF_LOCAL)
- abort ();
- return 1;
+ case bfd_arch_unknown:
+ i_ehdrp->e_machine = EM_NONE;
+ break;
+ case bfd_arch_sparc:
+ i_ehdrp->e_machine = EM_SPARC;
+ /* start-sanitize-v9 */
+#if ARCH_SIZE == 64
+ i_ehdrp->e_machine = EM_SPARC64;
+#endif
+ /* end-sanitize-v9 */
+ break;
+ case bfd_arch_i386:
+ i_ehdrp->e_machine = EM_386;
+ break;
+ case bfd_arch_m68k:
+ i_ehdrp->e_machine = EM_68K;
+ break;
+ case bfd_arch_m88k:
+ i_ehdrp->e_machine = EM_88K;
+ break;
+ case bfd_arch_i860:
+ i_ehdrp->e_machine = EM_860;
+ break;
+ case bfd_arch_mips: /* MIPS Rxxxx */
+ i_ehdrp->e_machine = EM_MIPS; /* only MIPS R3000 */
+ break;
+ case bfd_arch_hppa:
+ i_ehdrp->e_machine = EM_HPPA;
+ break;
+ /* also note that EM_M32, AT&T WE32100 is unknown to bfd */
+ default:
+ i_ehdrp->e_machine = EM_NONE;
}
- if (sym->section == &bfd_und_section)
- return 1;
- if (bfd_is_com_section (sym->section))
- return 1;
- if (sym->flags & (BSF_LOCAL | BSF_SECTION_SYM | BSF_FILE))
- return 0;
- return 0;
-}
-
-static void
-DEFUN (elf_map_symbols, (abfd), bfd * abfd)
-{
- int symcount = bfd_get_symcount (abfd);
- asymbol **syms = bfd_get_outsymbols (abfd);
- int num_locals = 0;
- int num_globals = 0;
- int num_locals2 = 0;
- int num_globals2 = 0;
- int num_sections = 0;
- int *symtab_map;
- int idx;
- asection *asect;
+ i_ehdrp->e_version = EV_CURRENT;
+ i_ehdrp->e_ehsize = sizeof (Elf_External_Ehdr);
-#ifdef DEBUG
- fprintf (stderr, "elf_map_symbols\n");
- fflush (stderr);
-#endif
+ /* no program header, for now. */
+ i_ehdrp->e_phoff = 0;
+ i_ehdrp->e_phentsize = 0;
+ i_ehdrp->e_phnum = 0;
- /* Add local symbols for each allocated section
- FIXME -- we should only put out symbols for sections that
- are actually relocated against. */
- for (asect = abfd->sections; asect; asect = asect->next)
- {
- if (/*asect->flags & (SEC_LOAD | SEC_DATA | SEC_CODE)*/1)
- num_sections++;
- }
+ /* each bfd section is section header entry */
+ i_ehdrp->e_entry = bfd_get_start_address (abfd);
+ i_ehdrp->e_shentsize = sizeof (Elf_External_Shdr);
- if (num_sections)
+ /* if we're building an executable, we'll need a program header table */
+ if (abfd->flags & EXEC_P)
{
- if (syms)
- syms = (asymbol **) bfd_realloc (abfd, syms,
- ((symcount + num_sections + 1)
- * sizeof (asymbol *)));
- else
- syms = (asymbol **) bfd_alloc (abfd,
- (num_sections + 1) * sizeof (asymbol *));
+ abort ();
- for (asect = abfd->sections; asect; asect = asect->next)
- {
- if (/* asect->flags & (SEC_LOAD | SEC_DATA | SEC_CODE) */ 1)
- {
- asymbol *sym = syms[symcount++] = bfd_make_empty_symbol (abfd);
- sym->the_bfd = abfd;
- sym->name = asect->name;
- sym->value = asect->vma;
- sym->flags = BSF_SECTION_SYM;
- sym->section = asect;
- }
- }
+#if 0
+ i_ehdrp->e_phentsize = sizeof (Elf_External_Phdr);
- syms[symcount] = (asymbol *) 0;
- bfd_set_symtab (abfd, syms, symcount);
+ /* elf_build_phdrs() returns a (NULL-terminated) array of
+ Elf_Internal_Phdrs */
+ i_phdrp = elf_build_phdrs (abfd, i_ehdrp, i_shdrp, &i_ehdrp->e_phnum);
+ i_ehdrp->e_phoff = outbase;
+ outbase += i_ehdrp->e_phentsize * i_ehdrp->e_phnum;
+#endif
}
-
- elf_symtab_map (abfd) = symtab_map
- = (int *) bfd_alloc (abfd, symcount * sizeof (int *));
-
- /* Identify and classify all of the symbols. */
- for (idx = 0; idx < symcount; idx++)
+ else
{
- if (!sym_is_global (syms[idx]))
- num_locals++;
- else
- num_globals++;
+ i_ehdrp->e_phentsize = 0;
+ i_phdrp = 0;
+ i_ehdrp->e_phoff = 0;
}
- /* Now provide mapping information. Add +1 for skipping over the
- dummy symbol. */
- for (idx = 0; idx < symcount; idx++)
- {
- if (!sym_is_global (syms[idx]))
- symtab_map[idx] = 1 + num_locals2++;
- else
- symtab_map[idx] = 1 + num_locals + num_globals2++;
- }
+ elf_tdata (abfd)->symtab_hdr.sh_name = bfd_add_to_strtab (abfd, shstrtab,
+ ".symtab");
+ elf_tdata (abfd)->strtab_hdr.sh_name = bfd_add_to_strtab (abfd, shstrtab,
+ ".strtab");
+ elf_tdata (abfd)->shstrtab_hdr.sh_name = bfd_add_to_strtab (abfd, shstrtab,
+ ".shstrtab");
- elf_num_locals (abfd) = num_locals;
- elf_num_globals (abfd) = num_globals;
}
-
-static boolean
-DEFUN (elf_compute_section_file_positions, (abfd), bfd * abfd)
+static void
+swap_out_syms (abfd)
+ bfd *abfd;
{
- Elf_Internal_Ehdr *i_ehdrp; /* Elf file header, internal form */
- Elf_Internal_Shdr *i_shdrp; /* Section header table, internal form */
- struct strtab *shstrtab;
- int count, maxsections;
- elf_sect_thunk est;
-
- if (!elf_shstrtab (abfd))
- {
- i_ehdrp = elf_elfheader (abfd); /* build new header in tdata memory */
- shstrtab = bfd_new_strtab (abfd);
-
- i_ehdrp->e_ident[EI_MAG0] = ELFMAG0;
- i_ehdrp->e_ident[EI_MAG1] = ELFMAG1;
- i_ehdrp->e_ident[EI_MAG2] = ELFMAG2;
- i_ehdrp->e_ident[EI_MAG3] = ELFMAG3;
-
-#if ARCH_SIZE == 32
- i_ehdrp->e_ident[EI_CLASS] = ELFCLASS32;
-#endif
-#if ARCH_SIZE == 64
- i_ehdrp->e_ident[EI_CLASS] = ELFCLASS64;
-#endif
- i_ehdrp->e_ident[EI_DATA] =
- abfd->xvec->byteorder_big_p ? ELFDATA2MSB : ELFDATA2LSB;
- i_ehdrp->e_ident[EI_VERSION] = EV_CURRENT;
-
- for (count = EI_PAD; count < EI_NIDENT; count++)
- i_ehdrp->e_ident[count] = 0;
-
- i_ehdrp->e_type = (abfd->flags & EXEC_P) ? ET_EXEC : ET_REL;
- switch (bfd_get_arch (abfd))
- {
- case bfd_arch_unknown:
- i_ehdrp->e_machine = EM_NONE;
- break;
- case bfd_arch_sparc:
- i_ehdrp->e_machine = EM_SPARC;
- /* start-sanitize-v9 */
-#if ARCH_SIZE == 64 /* v9 */
- i_ehdrp->e_machine = EM_SPARC64; /* v9 */
-#endif /* v9 */
- /* end-sanitize-v9 */
- break;
- case bfd_arch_i386:
- i_ehdrp->e_machine = EM_386;
- break;
- case bfd_arch_m68k:
- i_ehdrp->e_machine = EM_68K;
- break;
- case bfd_arch_m88k:
- i_ehdrp->e_machine = EM_88K;
- break;
- case bfd_arch_i860:
- i_ehdrp->e_machine = EM_860;
- break;
- case bfd_arch_mips: /* MIPS Rxxxx */
- i_ehdrp->e_machine = EM_MIPS; /* only MIPS R3000 */
- break;
- case bfd_arch_hppa:
- i_ehdrp->e_machine = EM_HPPA;
- break;
- /* also note that EM_M32, AT&T WE32100 is unknown to bfd */
- default:
- i_ehdrp->e_machine = EM_NONE;
- }
- i_ehdrp->e_version = EV_CURRENT;
- i_ehdrp->e_ehsize = sizeof (Elf_External_Ehdr);
-
- /* no program header, for now. */
- i_ehdrp->e_phoff = 0;
- i_ehdrp->e_phentsize = 0;
- i_ehdrp->e_phnum = 0;
+ struct strtab *shstrtab = elf_shstrtab (abfd);
- /* each bfd section is section header entry */
- i_ehdrp->e_entry = bfd_get_start_address (abfd);
- i_ehdrp->e_shentsize = sizeof (Elf_External_Shdr);
-
- /* figure at most each section can have a rel, strtab, symtab */
- maxsections = 4 * bfd_count_sections (abfd) + 2;
-
- i_ehdrp->e_shoff = i_ehdrp->e_ehsize;
-
- /* and we'll just have to fix up the offsets later. */
- /* outbase += i_ehdr.e_shentsize * i_ehdr.e_shnum; */
-
- i_shdrp = (Elf_Internal_Shdr *)
- bfd_alloc (abfd, sizeof (*i_shdrp) * maxsections);
- if (!i_shdrp)
- {
- bfd_error = no_memory;
- return false;
- }
- for (count = 0; count < maxsections; count++)
- {
- i_shdrp[count].rawdata = 0;
- i_shdrp[count].contents = 0;
- }
+ elf_map_symbols (abfd);
+ /* Dump out the symtabs. */
+ {
+ int symcount = bfd_get_symcount (abfd);
+ asymbol **syms = bfd_get_outsymbols (abfd);
+ struct strtab *stt = bfd_new_strtab (abfd);
+ Elf_Internal_Shdr *symtab_hdr;
+ Elf_Internal_Shdr *symstrtab_hdr;
+ Elf_External_Sym *outbound_syms;
+ int idx;
- i_shdrp[0].sh_name = 0;
- i_shdrp[0].sh_type = SHT_NULL;
- i_shdrp[0].sh_flags = 0;
- i_shdrp[0].sh_addr = 0;
- i_shdrp[0].sh_offset = 0;
- i_shdrp[0].sh_size = 0;
- i_shdrp[0].sh_link = SHN_UNDEF;
- i_shdrp[0].sh_info = 0;
- i_shdrp[0].sh_addralign = 0;
- i_shdrp[0].sh_entsize = 0;
+ symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
+ symtab_hdr->sh_type = SHT_SYMTAB;
+ symtab_hdr->sh_entsize = sizeof (Elf_External_Sym);
+ symtab_hdr->sh_size = symtab_hdr->sh_entsize * (symcount + 1);
+ symtab_hdr->sh_info = elf_num_locals (abfd) + 1;
- i_ehdrp->e_shnum = 1;
+ /* see assert in elf_fake_sections that supports this: */
+ symstrtab_hdr = &elf_tdata (abfd)->strtab_hdr;
+ symstrtab_hdr->sh_type = SHT_STRTAB;
- elf_elfsections (abfd) = i_shdrp;
- elf_shstrtab (abfd) = shstrtab;
+ outbound_syms = (Elf_External_Sym *)
+ bfd_alloc (abfd, (1 + symcount) * sizeof (Elf_External_Sym));
+ /* now generate the data (for "contents") */
+ {
+ /* Fill in zeroth symbol and swap it out. */
+ Elf_Internal_Sym sym;
+ sym.st_name = 0;
+ sym.st_value = 0;
+ sym.st_size = 0;
+ sym.st_info = 0;
+ sym.st_other = 0;
+ sym.st_shndx = SHN_UNDEF;
+ elf_swap_symbol_out (abfd, &sym, outbound_syms);
}
- est.i_ehdr = elf_elfheader (abfd);
- est.i_shdrp = elf_elfsections (abfd);
- est.shstrtab = elf_shstrtab (abfd);
- est.symtab_section = 0; /* elf_fake_sections fills it in */
+ for (idx = 0; idx < symcount; idx++)
+ {
+ Elf_Internal_Sym sym;
+ bfd_vma value = syms[idx]->value;
- elf_map_symbols (abfd);
- bfd_map_over_sections (abfd, elf_fake_sections, &est);
- {
- asection *secp;
- asection *psecp = (asection *) 0;
- int idx;
- Elf_Internal_Shdr *shp;
+ if (syms[idx]->flags & BSF_SECTION_SYM)
+ /* Section symbols have no names. */
+ sym.st_name = 0;
+ else
+ sym.st_name = bfd_add_to_strtab (abfd, stt, syms[idx]->name);
- for (idx = 0, secp = abfd->sections; secp; idx++, secp = secp->next)
- {
- if (psecp == (asection *) 0)
+ if (bfd_is_com_section (syms[idx]->section))
{
- secp->filepos = est.i_ehdr->e_shoff + (est.i_ehdr->e_shnum + 1) * sizeof (Elf_External_Shdr);
+ /* ELF common symbols put the alignment into the `value' field,
+ and the size into the `size' field. This is backwards from
+ how BFD handles it, so reverse it here. */
+ sym.st_size = value;
+ /* Should retrieve this from somewhere... */
+ sym.st_value = 16;
+ sym.st_shndx = SHN_COMMON;
}
else
{
- secp->filepos = psecp->filepos + psecp->_cooked_size;
- }
- shp = elf_locate_sh (abfd, est.shstrtab, est.i_shdrp, secp->name);
- if (shp)
- shp->sh_offset = secp->filepos;
- psecp = secp;
- }
- }
- elf_onesymtab (abfd) = est.symtab_section;
- return true;
-}
+ asection *sec = syms[idx]->section;
+ int shndx;
-static boolean
-DEFUN (elf_write_phdrs, (abfd, i_ehdrp, i_phdrp, phdr_cnt),
- bfd * abfd AND
- Elf_Internal_Ehdr * i_ehdrp AND
- Elf_Internal_Phdr * i_phdrp AND
- Elf32_Half phdr_cnt)
-{
- /* first program header entry goes after the file header */
- int outbase = i_ehdrp->e_ehsize;
- int i;
- Elf_External_Phdr x_phdr;
+ if (sec->output_section)
+ {
+ value += sec->output_offset;
+ sec = sec->output_section;
+ }
+ value += sec->vma;
+ sym.st_value = value;
+ sym.st_size = (elf_symbol_from (abfd, syms[idx]))->internal_elf_sym.st_size;
+ sym.st_shndx = shndx = elf_section_from_bfd_section (abfd, sec);
+ if (shndx == -1)
+ {
+ asection *sec2;
+ /* Writing this would be a hell of a lot easier if we had
+ some decent documentation on bfd, and knew what to expect
+ of the library, and what to demand of applications. For
+ example, it appears that `objcopy' might not set the
+ section of a symbol to be a section that is actually in
+ the output file. */
+ sec2 = bfd_get_section_by_name (abfd, sec->name);
+ assert (sec2 != 0);
+ sym.st_shndx = shndx = elf_section_from_bfd_section (abfd, sec2);
+ assert (shndx != -1);
+ }
+ }
- for (i = 0; i < phdr_cnt; i++)
- {
- elf_swap_phdr_out (abfd, i_phdrp + i, &x_phdr);
- bfd_seek (abfd, outbase, SEEK_SET);
- bfd_write ((PTR) & x_phdr, sizeof (x_phdr), 1, abfd);
- outbase += sizeof (x_phdr);
- }
+ if (bfd_is_com_section (syms[idx]->section))
+ sym.st_info = ELF_ST_INFO (STB_GLOBAL, STT_NOTYPE);
+ else if (syms[idx]->section == &bfd_und_section)
+ sym.st_info = ELF_ST_INFO (STB_GLOBAL, STT_NOTYPE);
+ else if (syms[idx]->flags & BSF_WEAK)
+ sym.st_info = ELF_ST_INFO (STB_WEAK, STT_OBJECT);
+ else if (syms[idx]->flags & BSF_SECTION_SYM)
+ sym.st_info = ELF_ST_INFO (STB_LOCAL, STT_SECTION);
+ else if (syms[idx]->flags & BSF_FILE)
+ sym.st_info = ELF_ST_INFO (STB_LOCAL, STT_FILE);
+ else if (syms[idx]->flags & (BSF_GLOBAL | BSF_EXPORT))
+ {
+ if (syms[idx]->flags & BSF_FUNCTION)
+ sym.st_info = ELF_ST_INFO (STB_GLOBAL, STT_FUNC);
+ else
+ sym.st_info = ELF_ST_INFO (STB_GLOBAL, STT_OBJECT);
+ }
+ else if (syms[idx]->flags & BSF_LOCAL)
+ {
+ if (syms[idx]->flags & BSF_FUNCTION)
+ sym.st_info = ELF_ST_INFO (STB_LOCAL, STT_FUNC);
+ else
+ sym.st_info = ELF_ST_INFO (STB_LOCAL, STT_OBJECT);
+ }
+ else
+ /* Default to local if flag isn't set at all. */
+ sym.st_info = ELF_ST_INFO (STB_LOCAL, STT_OBJECT);
- return true;
+ sym.st_other = 0;
+ elf_swap_symbol_out (abfd, &sym,
+ outbound_syms + elf_symtab_map (abfd)[idx]);
+ }
+
+ symtab_hdr->contents = (PTR) outbound_syms;
+ symstrtab_hdr->contents = (PTR) stt->tab;
+ symstrtab_hdr->sh_size = stt->length;
+ symstrtab_hdr->sh_type = SHT_STRTAB;
+
+ symstrtab_hdr->sh_flags = 0;
+ symstrtab_hdr->sh_addr = 0;
+ symstrtab_hdr->sh_entsize = 0;
+ symstrtab_hdr->sh_link = 0;
+ symstrtab_hdr->sh_info = 0;
+ symstrtab_hdr->sh_addralign = 0;
+ symstrtab_hdr->size = 0;
+ }
+
+ /* put the strtab out too... */
+ {
+ Elf_Internal_Shdr *this_hdr;
+
+ this_hdr = &elf_tdata(abfd)->shstrtab_hdr;
+ this_hdr->contents = (PTR) elf_shstrtab (abfd)->tab;
+ this_hdr->sh_size = elf_shstrtab (abfd)->length;
+ this_hdr->sh_type = SHT_STRTAB;
+ this_hdr->sh_flags = 0;
+ this_hdr->sh_addr = 0;
+ this_hdr->sh_entsize = 0;
+ this_hdr->sh_addralign = 0;
+ this_hdr->size = 0;
+ }
}
-static Elf_Internal_Phdr *
-DEFUN (elf_build_phdrs, (abfd, i_ehdrp, i_shdrp, phdr_cnt),
- bfd * abfd AND
- Elf_Internal_Ehdr * i_ehdrp AND
- Elf_Internal_Shdr * i_shdrp AND
- Elf32_Half * phdr_cnt)
+static boolean
+write_shdrs_and_ehdr (abfd)
+ bfd *abfd;
{
- Elf_Internal_Phdr *phdr_buf;
- int idx;
- /* NOTES:
- 1. The program header table is *not* loaded as part
- of the memory image of the program. If this
- changes later, the PT_PHDR entry must come first.
- 2. there is currently no support for program header
- entries of type PT_PHDR, PT_DYNAMIC, PT_INTERP,
- or PT_SHLIB. */
+ Elf_External_Ehdr x_ehdr; /* Elf file header, external form */
+ Elf_Internal_Ehdr *i_ehdrp; /* Elf file header, internal form */
+ Elf_Internal_Phdr *i_phdrp = 0; /* Program header table, internal form */
+ Elf_External_Shdr *x_shdrp; /* Section header table, external form */
+ Elf_Internal_Shdr **i_shdrp; /* Section header table, internal form */
- /* A. Figure out how many program header table entries are needed
- 1. PT_LOAD for the text segment
- 2. PT_LOAD for the data segment
- Then, reserve space for one more pointer. This will be NULL
- to indicate the end of the program header table. */
+ int count;
+ int scnt;
+ struct strtab *shstrtab;
-#ifdef PHDRS_INCLUDED
- *phdr_cnt = 4;
-#else
- /* XXX right now, execve() expects exactly 3 PT entries on HPPA-OSF. */
- *phdr_cnt = 3;
+ i_ehdrp = elf_elfheader (abfd);
+ i_shdrp = elf_elfsections (abfd);
+ shstrtab = elf_shstrtab (abfd);
+
+ /* swap the header before spitting it out... */
+
+#if DEBUG & 1
+ elf_debug_file (i_ehdrp);
#endif
+ elf_swap_ehdr_out (abfd, i_ehdrp, &x_ehdr);
+ bfd_seek (abfd, (file_ptr) 0, SEEK_SET);
+ bfd_write ((PTR) & x_ehdr, sizeof (x_ehdr), 1, abfd);
- phdr_buf = (Elf_Internal_Phdr *) bfd_xmalloc (((*phdr_cnt) + 1)
- *
- sizeof (Elf_Internal_Phdr));
+ /* If we're building an executable, fixup the program header table
+ offsets.
- idx = 0;
-#ifdef PHDRS_INCLUDED
- /* B. Fill in the PT_PHDR entry. */
+ @@ For now, assume that the entries are in a fixed order: text,
+ data, bss. FIXME */
- idx++;
+ if (abfd->flags & EXEC_P)
+ {
+ static char *CONST section_name[] =
+ {".text", ".data", ".bss"};
+
+ for (count = 0; count < 3; count++)
+ {
+ asection *asect = bfd_get_section_by_name (abfd,
+ section_name[count]);
+ int sh_idx = elf_section_from_bfd_section (abfd, asect);
+
+ i_phdrp[count].p_offset = i_shdrp[sh_idx]->sh_offset;
+ }
+
+ /* write out the program header table entries */
+ elf_write_phdrs (abfd, i_ehdrp, i_phdrp, i_ehdrp->e_phnum);
+ }
+
+ /* at this point we've concocted all the ELF sections... */
+ x_shdrp = (Elf_External_Shdr *)
+ bfd_alloc (abfd, sizeof (*x_shdrp) * (i_ehdrp->e_shnum));
+ if (!x_shdrp)
+ {
+ bfd_error = no_memory;
+ return false;
+ }
+
+ for (count = 0; count < i_ehdrp->e_shnum; count++)
+ {
+#if DEBUG & 2
+ elf_debug_section (shstrtab->tab + i_shdrp[count]->sh_name, count,
+ i_shdrp[count]);
#endif
+ elf_swap_shdr_out (abfd, i_shdrp[count], x_shdrp + count);
+ }
+ bfd_seek (abfd, (file_ptr) i_ehdrp->e_shoff, SEEK_SET);
+ bfd_write ((PTR) x_shdrp, sizeof (*x_shdrp), i_ehdrp->e_shnum, abfd);
+ /* need to dump the string table too... */
- /* C. Fill in the PT_LOAD entry for the text segment. */
+ return true;
+}
- phdr_buf[idx].p_type = PT_LOAD;
+static void
+assign_file_positions_for_relocs (abfd)
+ bfd *abfd;
+{
+ file_ptr off = elf_tdata(abfd)->next_file_pos;
+ int i;
+ Elf_Internal_Shdr **shdrpp = elf_elfsections (abfd);
+ Elf_Internal_Shdr *shdrp;
+ for (i = 0; i < elf_elfheader(abfd)->e_shnum; i++)
+ {
+ shdrp = shdrpp[i];
+ if (shdrp->sh_type != SHT_REL && shdrp->sh_type != SHT_RELA)
+ continue;
+ off = assign_file_position_for_section (shdrp, off);
+ }
+ elf_tdata(abfd)->next_file_pos = off;
+}
- /* get virtual/physical address from .text section */
- phdr_buf[idx].p_vaddr = bfd_get_section_by_name (abfd, ".text")->vma;
- phdr_buf[idx].p_paddr = 0; /* XXX */
+boolean
+DEFUN (NAME(bfd_elf,write_object_contents), (abfd), bfd * abfd)
+{
+ Elf_Internal_Ehdr *i_ehdrp;
+ Elf_Internal_Shdr **i_shdrp;
+ int count;
- /* Ultimately, we would like the size of the .text load
- segment to be the sum of the following sections:
- the program header table itself
- .interp
- .hash
- .dynsym
- .dynstr
- .rela.bss
- .rela.plt
- .init
- .text
- .fini
- .rodata
- But, right now, it will be the sum of the following sections:
- .text
- .rodata */
+ if (abfd->output_has_begun == false)
+ {
+ malloc (0);
+ prep_headers (abfd);
+malloc(0);
+ elf_compute_section_file_positions (abfd);
+malloc(0);
+ abfd->output_has_begun = true;
+ }
- {
- static char *CONST ld_sect_names[] =
- {".text", ".rodata", NULL};
- int i;
- int ld_size = 0;
+ i_shdrp = elf_elfsections (abfd);
+ i_ehdrp = elf_elfheader (abfd);
- for (i = 0; ld_sect_names[i]; i++)
- {
- asection *asect = bfd_get_section_by_name (abfd,
- ld_sect_names[i]);
+ bfd_map_over_sections (abfd, write_relocs, (PTR) 0);
+malloc(0);
+ assign_file_positions_for_relocs (abfd);
- if (asect)
- ld_size += bfd_section_size (abfd, asect);
+ /* After writing the headers, we need to write the sections too... */
+ for (count = 0; count < i_ehdrp->e_shnum; count++)
+ if (i_shdrp[count]->contents)
+ {
+ bfd_seek (abfd, i_shdrp[count]->sh_offset, SEEK_SET);
+ bfd_write (i_shdrp[count]->contents, i_shdrp[count]->sh_size, 1, abfd);
}
- phdr_buf[idx].p_filesz = ld_size;
- /* XXX: need to fix this */
- phdr_buf[idx].p_memsz = ld_size;
- }
- phdr_buf[idx].p_flags = PF_R + PF_X;
- phdr_buf[idx].p_align =
- bfd_get_section_by_name (abfd, ".text")->alignment_power;
+ return write_shdrs_and_ehdr (abfd);
+}
- idx++;
+/* Given an index of a section, retrieve a pointer to it. Note
+ that for our purposes, sections are indexed by {1, 2, ...} with
+ 0 being an illegal index. */
- /* D. Fill in the PT_LOAD entry for the data segment. */
+/* In the original, each ELF section went into exactly one BFD
+ section. This doesn't really make sense, so we need a real mapping.
+ The mapping has to hide in the Elf_Internal_Shdr since asection
+ doesn't have anything like a tdata field... */
- phdr_buf[idx].p_type = PT_LOAD;
+static struct sec *
+DEFUN (section_from_elf_index, (abfd, index),
+ bfd * abfd AND
+ int index)
+{
+ /* @@ Is bfd_com_section really correct in all the places it could
+ be returned from this routine? */
- /* get virtual/physical address from .data section */
- phdr_buf[idx].p_vaddr = bfd_get_section_by_name (abfd, ".data")->vma;
- phdr_buf[idx].p_paddr = 0; /* XXX */
+ if (index == SHN_ABS)
+ return &bfd_com_section; /* not abs? */
+ if (index == SHN_COMMON)
+ return &bfd_com_section;
- /* Ultimately, we would like the size of the data load segment
- to be the sum of the following sections:
- the PT_DYNAMIC program header table entry
- .plt
- .data
- .data1
- .got
- .dynamic
- But, right now, it will be the sum of the following sections:
- .data */
+ if (index > elf_elfheader (abfd)->e_shnum)
+ return 0;
{
- static char *CONST ld_sect_names[] =
- {".data", NULL};
- int i;
- int ld_size = 0;
+ Elf_Internal_Shdr *hdr = elf_elfsections (abfd)[index];
- for (i = 0; ld_sect_names[i]; i++)
+ switch (hdr->sh_type)
{
- asection *asect = bfd_get_section_by_name (abfd,
- ld_sect_names[i]);
+ /* ELF sections that map to BFD sections */
+ case SHT_PROGBITS:
+ case SHT_NOBITS:
+ if (!hdr->rawdata)
+ bfd_section_from_shdr (abfd, index);
+ return (struct sec *) hdr->rawdata;
- if (asect)
- ld_size += bfd_section_size (abfd, asect);
+ default:
+ return (struct sec *) &bfd_abs_section;
}
- phdr_buf[idx].p_filesz = ld_size;
- /* XXX: need to fix this */
- phdr_buf[idx].p_memsz = ld_size;
}
- phdr_buf[idx].p_flags = PF_R + PF_W + PF_X;
- phdr_buf[idx].p_align
- = bfd_get_section_by_name (abfd, ".data")->alignment_power;
+}
- idx++;
+/* given a section, search the header to find them... */
+static int
+DEFUN (elf_section_from_bfd_section, (abfd, asect),
+ bfd * abfd AND
+ struct sec *asect)
+{
+ Elf_Internal_Shdr **i_shdrp = elf_elfsections (abfd);
+ int index;
+ Elf_Internal_Shdr *hdr;
+ int maxindex = elf_elfheader (abfd)->e_shnum;
- /* E. Fill in the PT_LOAD entry for the bss segment. */
+ if (asect == &bfd_abs_section)
+ return SHN_ABS;
+ if (asect == &bfd_com_section)
+ return SHN_COMMON;
+ if (asect == &bfd_und_section)
+ return SHN_UNDEF;
- phdr_buf[idx].p_type = PT_LOAD;
+ for (index = 0; index < maxindex; index++)
+ {
+ hdr = i_shdrp[index];
+ switch (hdr->sh_type)
+ {
+ /* ELF sections that map to BFD sections */
+ case SHT_PROGBITS:
+ case SHT_NOBITS:
+ if (hdr->rawdata)
+ {
+ if (((struct sec *) (hdr->rawdata)) == asect)
+ return index;
+ }
+ break;
+ default:
+ break;
+ }
+ }
+ return -1;
+}
- /* get virtual/physical address from .data section */
- phdr_buf[idx].p_vaddr = bfd_get_section_by_name (abfd, ".bss")->vma;
- phdr_buf[idx].p_paddr = 0; /* XXX */
+/* given a symbol, return the bfd index for that symbol. */
+static int
+DEFUN (elf_symbol_from_bfd_symbol, (abfd, asym_ptr_ptr),
+ bfd * abfd AND
+ struct symbol_cache_entry **asym_ptr_ptr)
+{
+ struct symbol_cache_entry *asym_ptr = *asym_ptr_ptr;
+ CONST char *name = asym_ptr->name;
+ int idx;
+ int symcount = bfd_get_symcount (abfd);
+ asymbol **syms = bfd_get_outsymbols (abfd);
+
+ /* FIXME -- there has to be a better way than linear search. */
+ for (idx = 0; idx < symcount; idx++)
+ {
+ if (syms[idx] == asym_ptr
+ || (name == syms[idx]->name && name)
+ || ((asym_ptr->flags & BSF_SECTION_SYM)
+ && (syms[idx]->flags & BSF_SECTION_SYM)
+ && asym_ptr->section == syms[idx]->section))
+ break;
+ }
+
+ if (idx >= symcount)
+ {
+ /* badness... */
+ fprintf (stderr, "bfd app err: can't find sym `%s' in symtab\n",
+ name);
+ abort ();
+ }
+ idx = elf_symtab_map (abfd)[idx];
+#if DEBUG & 4
{
- static char *CONST ld_sect_names[] =
- {".bss", NULL};
- int i;
- int ld_size = 0;
+ flagword flags = asym_ptr->flags;
- for (i = 0; ld_sect_names[i]; i++)
- {
- asection *asect = bfd_get_section_by_name (abfd,
- ld_sect_names[i]);
+ fprintf (stderr,
+ "elfsym<-bfdsym %.8lx `%s' sec=%s symnum=%d {",
+ (long) asym_ptr, asym_ptr->name, asym_ptr->section->name, idx);
- if (asect)
- ld_size += bfd_section_size (abfd, asect);
- }
- phdr_buf[idx].p_filesz = 0;
- /* XXX: need to fix this */
- phdr_buf[idx].p_memsz = ld_size;
- }
- phdr_buf[idx].p_flags = PF_R + PF_W + PF_X;
- phdr_buf[idx].p_align
- = bfd_get_section_by_name (abfd, ".bss")->alignment_power;
+ if (flags == BSF_NO_FLAGS)
+ fprintf (stderr, " none");
- idx++;
+ if (flags & BSF_LOCAL)
+ fprintf (stderr, " local");
- /* F. Set up the "end of program header table" sentinel. */
+ if (flags & BSF_GLOBAL)
+ fprintf (stderr, " global");
- memset ((char *) (phdr_buf + idx), 0, sizeof (Elf_Internal_Phdr));
- idx++;
+ if (flags & BSF_EXPORT)
+ fprintf (stderr, " export");
- BFD_ASSERT (idx - 1 == *phdr_cnt);
+ if (flags & BSF_DEBUGGING)
+ fprintf (stderr, " debugging");
- return phdr_buf;
-}
+ if (flags & BSF_KEEP)
+ fprintf (stderr, " keep");
-boolean
-DEFUN (elf_write_object_contents, (abfd), bfd * abfd)
-{
- Elf_External_Ehdr x_ehdr; /* Elf file header, external form */
- Elf_Internal_Ehdr *i_ehdrp; /* Elf file header, internal form */
- Elf_Internal_Phdr *i_phdrp = 0; /* Program header table, internal form */
- Elf_External_Shdr *x_shdrp; /* Section header table, external form */
- Elf_Internal_Shdr *i_shdrp; /* Section header table, internal form */
- asection *nsect;
- elf_sect_thunk est;
+ if (flags & BSF_KEEP_G)
+ fprintf (stderr, " keep_g");
- int outbase = 0;
- int count;
- int scnt;
- struct strtab *shstrtab;
+ if (flags & BSF_WEAK)
+ fprintf (stderr, " weak");
- if (abfd->output_has_begun == false)
- {
- elf_compute_section_file_positions (abfd);
- abfd->output_has_begun = true;
- }
+ if (flags & BSF_SECTION_SYM)
+ fprintf (stderr, " section_sym");
- i_ehdrp = elf_elfheader (abfd);
- i_shdrp = elf_elfsections (abfd);
- shstrtab = elf_shstrtab (abfd);
+ if (flags & BSF_OLD_COMMON)
+ fprintf (stderr, " old_common");
- est.i_ehdr = i_ehdrp;
- est.i_shdrp = i_shdrp;
- est.shstrtab = shstrtab;
- est.symtab_section = elf_onesymtab (abfd); /* filled in by elf_fake */
+ if (flags & BSF_NOT_AT_END)
+ fprintf (stderr, " not_at_end");
- bfd_map_over_sections (abfd, elf_make_sections, &est);
- bfd_map_over_sections (abfd, fix_up_strtabs, &est);
+ if (flags & BSF_CONSTRUCTOR)
+ fprintf (stderr, " constructor");
- /* Dump out the symtabs. */
- {
- int symcount = bfd_get_symcount (abfd);
- asymbol **syms = bfd_get_outsymbols (abfd);
- struct strtab *stt = bfd_new_strtab (abfd);
- Elf_Internal_Shdr *symtab_hdr;
- Elf_Internal_Shdr *symstrtab_hdr;
- int symstrtab_section;
- Elf_External_Sym *outbound_syms;
- int idx;
+ if (flags & BSF_WARNING)
+ fprintf (stderr, " warning");
- symtab_hdr = &i_shdrp[est.symtab_section];
- symtab_hdr->sh_type = SHT_SYMTAB;
- symtab_hdr->sh_entsize = sizeof (Elf_External_Sym);
- symtab_hdr->sh_size = symtab_hdr->sh_entsize * (symcount + 1);
- symtab_hdr->sh_info = elf_num_locals (abfd) + 1;
+ if (flags & BSF_INDIRECT)
+ fprintf (stderr, " indirect");
- /* see assert in elf_fake_sections that supports this: */
- symstrtab_section = est.symtab_section + 1;
- symstrtab_hdr = &i_shdrp[symstrtab_section];
- symtab_hdr->sh_link = symstrtab_section;
- symstrtab_hdr->sh_type = SHT_STRTAB;
+ if (flags & BSF_FILE)
+ fprintf (stderr, " file");
- outbound_syms = (Elf_External_Sym *)
- bfd_alloc (abfd, (1 + symcount) * sizeof (Elf_External_Sym));
- /* now generate the data (for "contents") */
+ if (flags & BSF_FUNCTION)
+ fprintf (stderr, " function");
+
+ fputs (" }\n", stderr);
+ fflush (stderr);
+ }
+#endif
+
+ return idx;
+}
+
+static boolean
+DEFUN (elf_slurp_symbol_table, (abfd, symptrs),
+ bfd * abfd AND
+ asymbol ** symptrs) /* Buffer for generated bfd symbols */
+{
+ Elf_Internal_Shdr *hdr = &elf_tdata(abfd)->symtab_hdr;
+ int symcount; /* Number of external ELF symbols */
+ int i;
+ elf_symbol_type *sym; /* Pointer to current bfd symbol */
+ elf_symbol_type *symbase; /* Buffer for generated bfd symbols */
+ Elf_Internal_Sym i_sym;
+ Elf_External_Sym *x_symp;
+
+ /* this is only valid because there is only one symtab... */
+ /* FIXME: This is incorrect, there may also be a dynamic symbol
+ table which is a subset of the full symbol table. We either need
+ to be prepared to read both (and merge them) or ensure that we
+ only read the full symbol table. Currently we only get called to
+ read the full symbol table. -fnf */
+ if (bfd_get_outsymbols (abfd) != NULL)
{
- /* Fill in zeroth symbol and swap it out. */
- Elf_Internal_Sym sym;
- sym.st_name = 0;
- sym.st_value = 0;
- sym.st_size = 0;
- sym.st_info = 0;
- sym.st_other = 0;
- sym.st_shndx = SHN_UNDEF;
- elf_swap_symbol_out (abfd, &sym, outbound_syms);
+ return true;
}
- for (idx = 0; idx < symcount; idx++)
- {
- Elf_Internal_Sym sym;
- bfd_vma value = syms[idx]->value;
- if (syms[idx]->flags & BSF_SECTION_SYM)
- /* Section symbols have no names. */
- sym.st_name = 0;
- else
- sym.st_name = bfd_add_to_strtab (abfd, stt, syms[idx]->name);
+ /* Read each raw ELF symbol, converting from external ELF form to
+ internal ELF form, and then using the information to create a
+ canonical bfd symbol table entry.
- if (bfd_is_com_section (syms[idx]->section))
- {
- /* ELF common symbols put the alignment into the `value' field,
- and the size into the `size' field. This is backwards from
- how BFD handles it, so reverse it here. */
- sym.st_size = value;
- /* Should retrieve this from somewhere... */
- sym.st_value = 16;
- }
- else
- {
- value += syms[idx]->section->output_section->vma
- + syms[idx]->section->output_offset;
- sym.st_value = value;
+ Note that we allocate the initial bfd canonical symbol buffer
+ based on a one-to-one mapping of the ELF symbols to canonical
+ symbols. We actually use all the ELF symbols, so there will be no
+ space left over at the end. When we have all the symbols, we
+ build the caller's pointer vector. */
- sym.st_size = (elf_symbol_from (abfd, syms[idx]))->internal_elf_sym.st_size;
- }
+ if (bfd_seek (abfd, hdr->sh_offset, SEEK_SET) == -1)
+ {
+ bfd_error = system_call_error;
+ return false;
+ }
- if (bfd_is_com_section (syms[idx]->section))
- sym.st_info = ELF_ST_INFO (STB_GLOBAL, STT_NOTYPE);
- else if (syms[idx]->section == &bfd_und_section)
- sym.st_info = ELF_ST_INFO (STB_GLOBAL, STT_NOTYPE);
- else if (syms[idx]->flags & BSF_WEAK)
- sym.st_info = ELF_ST_INFO (STB_WEAK, STT_OBJECT);
- else if (syms[idx]->flags & BSF_SECTION_SYM)
- sym.st_info = ELF_ST_INFO (STB_LOCAL, STT_SECTION);
- else if (syms[idx]->flags & BSF_FILE)
- sym.st_info = ELF_ST_INFO (STB_LOCAL, STT_FILE);
- else if (syms[idx]->flags & (BSF_GLOBAL | BSF_EXPORT))
- {
- if (syms[idx]->flags & BSF_FUNCTION)
- sym.st_info = ELF_ST_INFO (STB_GLOBAL, STT_FUNC);
- else
- sym.st_info = ELF_ST_INFO (STB_GLOBAL, STT_OBJECT);
- }
- else if (syms[idx]->flags & BSF_LOCAL)
- {
- if (syms[idx]->flags & BSF_FUNCTION)
- sym.st_info = ELF_ST_INFO (STB_LOCAL, STT_FUNC);
- else
- sym.st_info = ELF_ST_INFO (STB_LOCAL, STT_OBJECT);
- }
- else
- /* Default to local if flag isn't set at all. */
- sym.st_info = ELF_ST_INFO (STB_LOCAL, STT_OBJECT);
-
- sym.st_other = 0;
- if (syms[idx]->section)
- sym.st_shndx =
- elf_section_from_bfd_section (abfd,
- syms[idx]->section->output_section);
- else
- sym.st_shndx = SHN_UNDEF;
-
- elf_swap_symbol_out (abfd, &sym,
- outbound_syms + elf_symtab_map (abfd)[idx]);
- }
-
- symtab_hdr->contents = (void *) outbound_syms;
- symstrtab_hdr->contents = (void *) stt->tab;
- symstrtab_hdr->sh_size = stt->length;
- symstrtab_hdr->sh_type = SHT_STRTAB;
-
- symstrtab_hdr->sh_flags = 0;
- symstrtab_hdr->sh_addr = 0;
- symstrtab_hdr->sh_entsize = 0;
- symstrtab_hdr->sh_link = 0;
- symstrtab_hdr->sh_info = 0;
- symstrtab_hdr->sh_offset = 0;
- symstrtab_hdr->sh_addralign = 0;
- symstrtab_hdr->size = 0;
- }
-
- /* put the strtab out too... */
- {
- Elf_Internal_Shdr *this_hdr;
- int this_section;
-
- this_section = i_ehdrp->e_shnum++;
- i_ehdrp->e_shstrndx = this_section;
- this_hdr = &i_shdrp[this_section];
- this_hdr->sh_name = bfd_add_to_strtab (abfd, shstrtab, ".shstrtab");
- this_hdr->sh_type = SHT_STRTAB;
- this_hdr->sh_size = shstrtab->length;
- this_hdr->contents = (void *) shstrtab->tab;
-
- this_hdr->sh_flags = 0;
- this_hdr->sh_addr = 0;
- this_hdr->sh_entsize = 0;
- this_hdr->sh_link = 0;
- this_hdr->sh_info = 0;
- this_hdr->sh_offset = 0;
- this_hdr->sh_addralign = 0;
- this_hdr->size = 0;
- }
+ symcount = hdr->sh_size / sizeof (Elf_External_Sym);
+ symbase = (elf_symbol_type *) bfd_zalloc (abfd, symcount * sizeof (elf_symbol_type));
+ sym = symbase;
- outbase = i_ehdrp->e_ehsize;
+ /* Temporarily allocate room for the raw ELF symbols. */
+ x_symp = (Elf_External_Sym *) bfd_xmalloc (symcount * sizeof (Elf_External_Sym));
- /* if we're building an executable, we'll need a program header table */
- if (abfd->flags & EXEC_P)
+ if (bfd_read ((PTR) x_symp, sizeof (Elf_External_Sym), symcount, abfd)
+ != symcount * sizeof (Elf_External_Sym))
{
- i_ehdrp->e_phentsize = sizeof (Elf_External_Phdr);
-
- /* elf_build_phdrs() returns a (NULL-terminated) array of
- Elf_Internal_Phdrs */
- i_phdrp = elf_build_phdrs (abfd, i_ehdrp, i_shdrp, &i_ehdrp->e_phnum);
- i_ehdrp->e_phoff = i_ehdrp->e_ehsize;
- i_ehdrp->e_shoff = i_ehdrp->e_phoff + (i_ehdrp->e_phentsize
- * i_ehdrp->e_phnum);
+ free ((PTR) x_symp);
+ bfd_error = system_call_error;
+ return false;
}
-
- /* swap the header before spitting it out... */
-
-#if DEBUG & 1
- elf_debug_file (i_ehdrp);
-#endif
- elf_swap_ehdr_out (abfd, i_ehdrp, &x_ehdr);
- bfd_seek (abfd, (file_ptr) 0, SEEK_SET);
- bfd_write ((PTR) & x_ehdr, sizeof (x_ehdr), 1, abfd);
-
-#if 0
- outbase += i_ehdrp->e_phentsize * i_ehdrp->e_phnum;
- outbase += i_ehdrp->e_shentsize * i_ehdrp->e_shnum;
-#endif
- /* find the next available location in the file
- (just beyond the sections that have already been written). */
- outbase = 0;
- for (count = 1; count < i_ehdrp->e_shnum; count++)
+ /* Skip first symbol, which is a null dummy. */
+ for (i = 1; i < symcount; i++)
{
- if (i_shdrp[count].sh_offset && outbase < i_shdrp[count].sh_offset)
- outbase = i_shdrp[count].sh_offset + i_shdrp[count].sh_size;
- }
+ elf_swap_symbol_in (abfd, x_symp + i, &i_sym);
+ memcpy (&sym->internal_elf_sym, &i_sym, sizeof (Elf_Internal_Sym));
+ memcpy (&sym->native_elf_sym, x_symp + i, sizeof (Elf_External_Sym));
+ sym->symbol.the_bfd = abfd;
- /* now we fix up the offsets... */
- for (count = 1; count < i_ehdrp->e_shnum; count++)
- {
- if (i_shdrp[count].sh_offset == 0)
- i_shdrp[count].sh_offset = outbase;
- outbase += i_shdrp[count].sh_size;
- }
+ sym->symbol.name = elf_string_from_elf_section (abfd, hdr->sh_link,
+ i_sym.st_name);
- /* If we're building an executable, fixup the program header table
- offsets.
+ sym->symbol.value = i_sym.st_value;
- @@ For now, assume that the entries are in a fixed order: text,
- data, bss. FIXME */
+ if (i_sym.st_shndx > 0 && i_sym.st_shndx < SHN_LORESERV)
+ {
+ sym->symbol.section = section_from_elf_index (abfd, i_sym.st_shndx);
+ }
+ else if (i_sym.st_shndx == SHN_ABS)
+ {
+ sym->symbol.section = &bfd_abs_section;
+ }
+ else if (i_sym.st_shndx == SHN_COMMON)
+ {
+ sym->symbol.section = &bfd_com_section;
+ /* Elf puts the alignment into the `value' field, and the size
+ into the `size' field. BFD wants to see the size in the
+ value field, and doesn't care (at the moment) about the
+ alignment. */
+ sym->symbol.value = i_sym.st_size;
+ }
+ else if (i_sym.st_shndx == SHN_UNDEF)
+ {
+ sym->symbol.section = &bfd_und_section;
+ }
+ else
+ sym->symbol.section = &bfd_abs_section;
- if (abfd->flags & EXEC_P)
- {
- static char *CONST section_name[] =
- {".text", ".data", ".bss"};
+ sym->symbol.value -= sym->symbol.section->vma;
- for (count = 0; count < 3; count++)
+ switch (ELF_ST_BIND (i_sym.st_info))
{
- asection *asect = bfd_get_section_by_name (abfd, section_name[count]);
- int sh_idx = elf_section_from_bfd_section (abfd, asect);
+ case STB_LOCAL:
+ sym->symbol.flags |= BSF_LOCAL;
+ break;
+ case STB_GLOBAL:
+ sym->symbol.flags |= (BSF_GLOBAL | BSF_EXPORT);
+ break;
+ case STB_WEAK:
+ sym->symbol.flags |= BSF_WEAK;
+ break;
+ }
- i_phdrp[count].p_offset = i_shdrp[sh_idx].sh_offset;
+ switch (ELF_ST_TYPE (i_sym.st_info))
+ {
+ case STT_SECTION:
+ sym->symbol.flags |= BSF_SECTION_SYM | BSF_DEBUGGING;
+ break;
+ case STT_FILE:
+ sym->symbol.flags |= BSF_FILE | BSF_DEBUGGING;
+ break;
+ case STT_FUNC:
+ sym->symbol.flags |= BSF_FUNCTION;
+ break;
}
+ /* Is this a definition of $global$? If so, keep it because it will be
+ needd if any relocations are performed. */
+ if (!strcmp (sym->symbol.name, "$global$")
+ && sym->symbol.section != &bfd_und_section)
+ {
+ /* @@ Why is this referring to backend data and not a field of
+ abfd? FIXME */
+ struct elf_backend_data *be_data = (struct elf_backend_data *) abfd->xvec->backend_data;
- /* write out the program header table entries */
- elf_write_phdrs (abfd, i_ehdrp, i_phdrp, i_ehdrp->e_phnum);
+ be_data->global_sym = (PTR) sym;
+ }
+ sym++;
}
- /* at this point we've concocted all the ELF sections... */
- x_shdrp = (Elf_External_Shdr *)
- bfd_alloc (abfd, sizeof (*x_shdrp) * (i_ehdrp->e_shnum));
- if (!x_shdrp)
- {
- bfd_error = no_memory;
- return false;
- }
+ /* We rely on the zalloc to clear out the final symbol entry. */
- for (count = 0, scnt = 0; count < i_ehdrp->e_shnum; count++)
- {
-#if DEBUG & 2
- elf_debug_section (shstrtab->tab + i_shdrp[scnt].sh_name, count, i_shdrp + scnt);
-#endif
- elf_swap_shdr_out (abfd, i_shdrp + count, x_shdrp + scnt);
- scnt++;
- }
- bfd_write ((PTR) x_shdrp, sizeof (*x_shdrp), i_ehdrp->e_shnum, abfd);
- /* need to dump the string table too... */
+ /* obj_raw_syms macro uses a cast... */
+ elf_tdata (abfd)->raw_syms = (PTR) x_symp;
- /* after writing the headers, we need to write the sections too... */
- nsect = abfd->sections;
- for (count = 0; count < i_ehdrp->e_shnum; count++)
+ bfd_get_symcount (abfd) = symcount = sym - symbase;
+
+ /* Fill in the user's symbol pointer vector if needed. */
+ if (symptrs)
{
- if (i_shdrp[count].contents)
+ sym = symbase;
+ while (symcount-- > 0)
{
- bfd_seek (abfd, i_shdrp[count].sh_offset, SEEK_SET);
- bfd_write (i_shdrp[count].contents, i_shdrp[count].sh_size, 1, abfd);
+ *symptrs++ = &sym->symbol;
+ sym++;
}
+ *symptrs = 0; /* Final null pointer */
}
return true;
}
-/* Given an index of a section, retrieve a pointer to it. Note
- that for our purposes, sections are indexed by {1, 2, ...} with
- 0 being an illegal index. */
+/* Return the number of bytes required to hold the symtab vector.
-/* In the original, each ELF section went into exactly one BFD
- section. This doesn't really make sense, so we need a real mapping.
- The mapping has to hide in the Elf_Internal_Shdr since asection
- doesn't have anything like a tdata field... */
+ Note that we base it on the count plus 1, since we will null terminate
+ the vector allocated based on this size. However, the ELF symbol table
+ always has a dummy entry as symbol #0, so it ends up even. */
-static struct sec *
-DEFUN (section_from_elf_index, (abfd, index),
- bfd * abfd AND
- int index)
+unsigned int
+DEFUN (elf_get_symtab_upper_bound, (abfd), bfd * abfd)
{
- /* @@ Is bfd_com_section really correct in all the places it could
- be returned from this routine? */
+ unsigned int symcount;
+ unsigned int symtab_size = 0;
- if (index == SHN_ABS)
- return &bfd_com_section; /* not abs? */
- if (index == SHN_COMMON)
- return &bfd_com_section;
+ Elf_Internal_Shdr *hdr = &elf_tdata(abfd)->symtab_hdr;
+ symcount = hdr->sh_size / sizeof (Elf_External_Sym);
+ symtab_size = (symcount - 1 + 1) * (sizeof (asymbol));
- {
- Elf_Internal_Shdr *i_shdrp = elf_elfsections (abfd);
- Elf_Internal_Shdr *hdr = i_shdrp + index;
+ return symtab_size;
+}
- switch (hdr->sh_type)
- {
- /* ELF sections that map to BFD sections */
- case SHT_PROGBITS:
- case SHT_NOBITS:
- if (!hdr->rawdata)
- bfd_section_from_shdr (abfd, index);
- return (struct sec *) hdr->rawdata;
+/*
+ This function return the number of bytes required to store the
+ relocation information associated with section <<sect>>
+ attached to bfd <<abfd>>
- default:
- return (struct sec *) &bfd_abs_section;
- }
- }
+*/
+unsigned int
+elf_get_reloc_upper_bound (abfd, asect)
+ bfd *abfd;
+ sec_ptr asect;
+{
+ if (asect->flags & SEC_RELOC)
+ {
+ /* either rel or rela */
+ return elf_section_data(asect)->rel_hdr.sh_size;
+ }
+ else
+ return 0;
}
-/* given a section, search the header to find them... */
-static int
-DEFUN (elf_section_from_bfd_section, (abfd, asect),
+static boolean
+DEFUN (elf_slurp_reloca_table, (abfd, asect, symbols),
bfd * abfd AND
- struct sec *asect)
+ sec_ptr asect AND
+ asymbol ** symbols)
{
- Elf_Internal_Shdr *i_shdrp = elf_elfsections (abfd);
- int index;
- Elf_Internal_Shdr *hdr;
- int maxindex = elf_elfheader (abfd)->e_shnum;
-
- if (asect == &bfd_abs_section)
- return SHN_ABS;
- if (asect == &bfd_com_section)
- return SHN_COMMON;
+ Elf_External_Rela *native_relocs;
+ arelent *reloc_cache;
+ arelent *cache_ptr;
- for (index = 0; index < maxindex; index++)
- {
- hdr = &i_shdrp[index];
- switch (hdr->sh_type)
- {
- /* ELF sections that map to BFD sections */
- case SHT_PROGBITS:
- case SHT_NOBITS:
- if (hdr->rawdata)
- {
- if (((struct sec *) (hdr->rawdata)) == asect)
- return index;
- }
- break;
- default:
- break;
- }
- }
- return 0;
-}
+ unsigned int idx;
-/* given a symbol, return the bfd index for that symbol. */
-static int
-DEFUN (elf_symbol_from_bfd_symbol, (abfd, asym_ptr_ptr),
- bfd * abfd AND
- struct symbol_cache_entry **asym_ptr_ptr)
-{
- struct symbol_cache_entry *asym_ptr = *asym_ptr_ptr;
- CONST char *name = asym_ptr->name;
- int idx;
- int symcount = bfd_get_symcount (abfd);
- asymbol **syms = bfd_get_outsymbols (abfd);
+ if (asect->relocation)
+ return true;
+ if (asect->reloc_count == 0)
+ return true;
+ if (asect->flags & SEC_CONSTRUCTOR)
+ return true;
- /* FIXME -- there has to be a better way than linear search. */
- for (idx = 0; idx < symcount; idx++)
- {
- if (syms[idx] == asym_ptr
- || (name == syms[idx]->name && name)
- || ((asym_ptr->flags & BSF_SECTION_SYM)
- && (syms[idx]->flags & BSF_SECTION_SYM)
- && asym_ptr->section == syms[idx]->section))
- break;
- }
+ bfd_seek (abfd, asect->rel_filepos, SEEK_SET);
+ native_relocs = (Elf_External_Rela *)
+ bfd_alloc (abfd, asect->reloc_count * sizeof (Elf_External_Rela));
+ bfd_read ((PTR) native_relocs,
+ sizeof (Elf_External_Rela), asect->reloc_count, abfd);
- if (idx >= symcount)
+ reloc_cache = (arelent *)
+ bfd_alloc (abfd, (size_t) (asect->reloc_count * sizeof (arelent)));
+
+ if (!reloc_cache)
{
- /* badness... */
- fprintf (stderr, "bfd app err: can't find sym `%s' in symtab\n",
- name);
- abort ();
+ bfd_error = no_memory;
+ return false;
}
- idx = elf_symtab_map (abfd)[idx];
-
-#if DEBUG & 4
- {
- flagword flags = asym_ptr->flags;
-
- fprintf (stderr,
- "elfsym<-bfdsym %.8lx `%s' sec=%s symnum=%d {",
- (long) asym_ptr, asym_ptr->name, asym_ptr->section->name, idx);
-
- if (flags == BSF_NO_FLAGS)
- fprintf (stderr, " none");
-
- if (flags & BSF_LOCAL)
- fprintf (stderr, " local");
-
- if (flags & BSF_GLOBAL)
- fprintf (stderr, " global");
-
- if (flags & BSF_EXPORT)
- fprintf (stderr, " export");
-
- if (flags & BSF_DEBUGGING)
- fprintf (stderr, " debugging");
-
- if (flags & BSF_KEEP)
- fprintf (stderr, " keep");
- if (flags & BSF_KEEP_G)
- fprintf (stderr, " keep_g");
-
- if (flags & BSF_WEAK)
- fprintf (stderr, " weak");
-
- if (flags & BSF_SECTION_SYM)
- fprintf (stderr, " section_sym");
+ for (idx = 0; idx < asect->reloc_count; idx++)
+ {
+#ifdef RELOC_PROCESSING
+ Elf_Internal_Rela dst;
+ Elf_External_Rela *src;
- if (flags & BSF_OLD_COMMON)
- fprintf (stderr, " old_common");
+ cache_ptr = reloc_cache + idx;
+ src = native_relocs + idx;
+ elf_swap_reloca_in (abfd, src, &dst);
- if (flags & BSF_NOT_AT_END)
- fprintf (stderr, " not_at_end");
+ RELOC_PROCESSING (cache_ptr, &dst, symbols, abfd, asect);
+#else
+ Elf_Internal_Rela dst;
+ Elf_External_Rela *src;
- if (flags & BSF_CONSTRUCTOR)
- fprintf (stderr, " constructor");
+ cache_ptr = reloc_cache + idx;
+ src = native_relocs + idx;
- if (flags & BSF_WARNING)
- fprintf (stderr, " warning");
+ elf_swap_reloca_in (abfd, src, &dst);
- if (flags & BSF_INDIRECT)
- fprintf (stderr, " indirect");
+ if (asect->flags & SEC_RELOC)
+ {
+ /* relocatable, so the offset is off of the section */
+ cache_ptr->address = dst.r_offset + asect->vma;
+ }
+ else
+ {
+ /* non-relocatable, so the offset a virtual address */
+ cache_ptr->address = dst.r_offset;
+ }
+ /* ELF_R_SYM(dst.r_info) is the symbol table offset; subtract 1
+ because the first entry is NULL. */
+ cache_ptr->sym_ptr_ptr = symbols + ELF_R_SYM (dst.r_info) - 1;
+ {
+ /* Is it an ELF section symbol? If so, translate it into a
+ BFD section symbol. */
+ asymbol *s = *(cache_ptr->sym_ptr_ptr);
+ if (s->flags & BSF_SECTION_SYM)
+ cache_ptr->sym_ptr_ptr = s->section->symbol_ptr_ptr;
+ }
+ cache_ptr->addend = dst.r_addend;
- if (flags & BSF_FILE)
- fprintf (stderr, " file");
+ /* Fill in the cache_ptr->howto field from dst.r_type */
+ {
+ struct elf_backend_data *ebd = get_elf_backend_data (abfd);
+ (*ebd->elf_info_to_howto) (abfd, cache_ptr, &dst);
+ }
+#endif
+ }
- if (flags & BSF_FUNCTION)
- fprintf (stderr, " function");
+ asect->relocation = reloc_cache;
+ return true;
+}
- fputs (" }\n", stderr);
- fflush (stderr);
- }
-#endif
+#ifdef DEBUG
+static void
+elf_debug_section (str, num, hdr)
+ char *str;
+ int num;
+ Elf_Internal_Shdr *hdr;
+{
+ fprintf (stderr, "\nSection#%d '%s' 0x%.8lx\n", num, str, (long) hdr);
+ fprintf (stderr,
+ "sh_name = %ld\tsh_type = %ld\tsh_flags = %ld\n",
+ (long) hdr->sh_name,
+ (long) hdr->sh_type,
+ (long) hdr->sh_flags);
+ fprintf (stderr,
+ "sh_addr = %ld\tsh_offset = %ld\tsh_size = %ld\n",
+ (long) hdr->sh_addr,
+ (long) hdr->sh_offset,
+ (long) hdr->sh_size);
+ fprintf (stderr,
+ "sh_link = %ld\tsh_info = %ld\tsh_addralign = %ld\n",
+ (long) hdr->sh_link,
+ (long) hdr->sh_info,
+ (long) hdr->sh_addralign);
+ fprintf (stderr, "sh_entsize = %ld\n",
+ (long) hdr->sh_entsize);
+ fprintf (stderr, "rawdata = 0x%.8lx\n", (long) hdr->rawdata);
+ fprintf (stderr, "contents = 0x%.8lx\n", (long) hdr->contents);
+ fprintf (stderr, "size = %ld\n", (long) hdr->size);
+ fflush (stderr);
+}
- return idx;
+static void
+elf_debug_file (ehdrp)
+ Elf_Internal_Ehdr *ehdrp;
+{
+ fprintf (stderr, "e_entry = 0x%.8lx\n", (long) ehdrp->e_entry);
+ fprintf (stderr, "e_phoff = %ld\n", (long) ehdrp->e_phoff);
+ fprintf (stderr, "e_phnum = %ld\n", (long) ehdrp->e_phnum);
+ fprintf (stderr, "e_phentsize = %ld\n", (long) ehdrp->e_phentsize);
+ fprintf (stderr, "e_shoff = %ld\n", (long) ehdrp->e_shoff);
+ fprintf (stderr, "e_shnum = %ld\n", (long) ehdrp->e_shnum);
+ fprintf (stderr, "e_shentsize = %ld\n", (long) ehdrp->e_shentsize);
}
+#endif
static boolean
-DEFUN (elf_slurp_symbol_table, (abfd, symptrs),
+DEFUN (elf_slurp_reloc_table, (abfd, asect, symbols),
bfd * abfd AND
- asymbol ** symptrs) /* Buffer for generated bfd symbols */
+ sec_ptr asect AND
+ asymbol ** symbols)
{
- Elf_Internal_Shdr *i_shdrp = elf_elfsections (abfd);
- Elf_Internal_Shdr *hdr = i_shdrp + elf_onesymtab (abfd);
- int symcount; /* Number of external ELF symbols */
- int i;
- elf_symbol_type *sym; /* Pointer to current bfd symbol */
- elf_symbol_type *symbase; /* Buffer for generated bfd symbols */
- Elf_Internal_Sym i_sym;
- Elf_External_Sym *x_symp;
+ Elf_External_Rel *native_relocs;
+ arelent *reloc_cache;
+ arelent *cache_ptr;
+ Elf_Internal_Shdr *data_hdr;
+ ElfNAME (Off) data_off;
+ ElfNAME (Word) data_max;
+ char buf[4]; /* FIXME -- might be elf64 */
- /* this is only valid because there is only one symtab... */
- /* FIXME: This is incorrect, there may also be a dynamic symbol
- table which is a subset of the full symbol table. We either need
- to be prepared to read both (and merge them) or ensure that we
- only read the full symbol table. Currently we only get called to
- read the full symbol table. -fnf */
- if (bfd_get_outsymbols (abfd) != NULL)
- {
- return true;
- }
+ unsigned int idx;
- /* Read each raw ELF symbol, converting from external ELF form to
- internal ELF form, and then using the information to create a
- canonical bfd symbol table entry.
+ if (asect->relocation)
+ return true;
+ if (asect->reloc_count == 0)
+ return true;
+ if (asect->flags & SEC_CONSTRUCTOR)
+ return true;
- Note that we allocate the initial bfd canonical symbol buffer
- based on a one-to-one mapping of the ELF symbols to canonical
- symbols. We actually use all the ELF symbols, so there will be no
- space left over at the end. When we have all the symbols, we
- build the caller's pointer vector. */
+ bfd_seek (abfd, asect->rel_filepos, SEEK_SET);
+ native_relocs = (Elf_External_Rel *)
+ bfd_alloc (abfd, asect->reloc_count * sizeof (Elf_External_Rel));
+ bfd_read ((PTR) native_relocs,
+ sizeof (Elf_External_Rel), asect->reloc_count, abfd);
- if (bfd_seek (abfd, hdr->sh_offset, SEEK_SET) == -1)
+ reloc_cache = (arelent *)
+ bfd_alloc (abfd, (size_t) (asect->reloc_count * sizeof (arelent)));
+
+ if (!reloc_cache)
{
- bfd_error = system_call_error;
+ bfd_error = no_memory;
return false;
}
- symcount = hdr->sh_size / sizeof (Elf_External_Sym);
- symbase = (elf_symbol_type *) bfd_zalloc (abfd, symcount * sizeof (elf_symbol_type));
- sym = symbase;
+ /* Get the offset of the start of the segment we are relocating to read in
+ the implicit addend. */
+ data_hdr = &elf_section_data(asect)->this_hdr;
+ data_off = data_hdr->sh_offset;
+ data_max = data_hdr->sh_size - sizeof (buf) + 1;
- /* Temporarily allocate room for the raw ELF symbols. */
- x_symp = (Elf_External_Sym *) bfd_xmalloc (symcount * sizeof (Elf_External_Sym));
+#if DEBUG & 2
+ elf_debug_section ("data section", -1, data_hdr);
+#endif
- if (bfd_read ((PTR) x_symp, sizeof (Elf_External_Sym), symcount, abfd)
- != symcount * sizeof (Elf_External_Sym))
- {
- free ((PTR) x_symp);
- bfd_error = system_call_error;
- return false;
- }
- /* Skip first symbol, which is a null dummy. */
- for (i = 1; i < symcount; i++)
+ for (idx = 0; idx < asect->reloc_count; idx++)
{
- elf_swap_symbol_in (abfd, x_symp + i, &i_sym);
- memcpy (&sym->internal_elf_sym, &i_sym, sizeof (Elf_Internal_Sym));
- memcpy (&sym->native_elf_sym, x_symp + i, sizeof (Elf_External_Sym));
- sym->symbol.the_bfd = abfd;
+#ifdef RELOC_PROCESSING
+ Elf_Internal_Rel dst;
+ Elf_External_Rel *src;
- sym->symbol.name = elf_string_from_elf_section (abfd, hdr->sh_link,
- i_sym.st_name);
+ cache_ptr = reloc_cache + idx;
+ src = native_relocs + idx;
+ elf_swap_reloc_in (abfd, src, &dst);
- sym->symbol.value = i_sym.st_value;
+ RELOC_PROCESSING (cache_ptr, &dst, symbols, abfd, asect);
+#else
+ Elf_Internal_Rel dst;
+ Elf_External_Rel *src;
- if (i_sym.st_shndx > 0 && i_sym.st_shndx < SHN_LORESERV)
- {
- sym->symbol.section = section_from_elf_index (abfd, i_sym.st_shndx);
- }
- else if (i_sym.st_shndx == SHN_ABS)
+ cache_ptr = reloc_cache + idx;
+ src = native_relocs + idx;
+
+ elf_swap_reloc_in (abfd, src, &dst);
+
+ if (asect->flags & SEC_RELOC)
{
- sym->symbol.section = &bfd_abs_section;
+ /* relocatable, so the offset is off of the section */
+ cache_ptr->address = dst.r_offset + asect->vma;
}
- else if (i_sym.st_shndx == SHN_COMMON)
+ else
{
- sym->symbol.section = &bfd_com_section;
- /* Elf puts the alignment into the `value' field, and the size
- into the `size' field. BFD wants to see the size in the
- value field, and doesn't care (at the moment) about the
- alignment. */
- sym->symbol.value = i_sym.st_size;
+ /* non-relocatable, so the offset a virtual address */
+ cache_ptr->address = dst.r_offset;
}
- else if (i_sym.st_shndx == SHN_UNDEF)
+ /* ELF_R_SYM(dst.r_info) is the symbol table offset...
+ -1 is to skip the dummy symbol table entry */
+ cache_ptr->sym_ptr_ptr = symbols + ELF_R_SYM (dst.r_info) - 1;
+ BFD_ASSERT (dst.r_offset <= data_max);
+ if (bfd_seek (abfd, data_off + dst.r_offset, SEEK_SET) != 0
+ || bfd_read ((PTR) buf, sizeof (buf), 1, abfd) != sizeof (buf))
{
- sym->symbol.section = &bfd_und_section;
+ bfd_error = system_call_error;
+ return false;
}
- else
- sym->symbol.section = &bfd_abs_section;
- sym->symbol.value -= sym->symbol.section->vma;
+ cache_ptr->addend = (*abfd->xvec->bfd_getx_signed_32) ((bfd_byte *) buf);
- switch (ELF_ST_BIND (i_sym.st_info))
- {
- case STB_LOCAL:
- sym->symbol.flags |= BSF_LOCAL;
- break;
- case STB_GLOBAL:
- sym->symbol.flags |= (BSF_GLOBAL | BSF_EXPORT);
- break;
- case STB_WEAK:
- sym->symbol.flags |= BSF_WEAK;
- break;
- }
+ /* Fill in the cache_ptr->howto field from dst.r_type */
+ {
+ struct elf_backend_data *ebd = get_elf_backend_data (abfd);
+ (*ebd->elf_info_to_howto_rel) (abfd, cache_ptr, &dst);
+ }
+#endif
+ }
- switch (ELF_ST_TYPE (i_sym.st_info))
- {
- case STT_SECTION:
- sym->symbol.flags |= BSF_SECTION_SYM | BSF_DEBUGGING;
- break;
- case STT_FILE:
- sym->symbol.flags |= BSF_FILE | BSF_DEBUGGING;
- break;
- case STT_FUNC:
- sym->symbol.flags |= BSF_FUNCTION;
- break;
- }
- /* Is this a definition of $global$? If so, keep it because it will be
- needd if any relocations are performed. */
- if (!strcmp (sym->symbol.name, "$global$")
- && sym->symbol.section != &bfd_und_section)
- {
- /* @@ Why is this referring to backend data and not a field of
- abfd? FIXME */
- struct elf_backend_data *be_data = (struct elf_backend_data *) abfd->xvec->backend_data;
+ asect->relocation = reloc_cache;
+ return true;
+}
- be_data->global_sym = (PTR) sym;
- }
- sym++;
+unsigned int
+elf_canonicalize_reloc (abfd, section, relptr, symbols)
+ bfd *abfd;
+ sec_ptr section;
+ arelent **relptr;
+ asymbol **symbols;
+{
+ arelent *tblptr = section->relocation;
+ unsigned int count = 0;
+ int use_rela_p = get_elf_backend_data (abfd)->use_rela_p;
+
+ /* snarfed from coffcode.h */
+ if (use_rela_p)
+ elf_slurp_reloca_table (abfd, section, symbols);
+ else
+ elf_slurp_reloc_table (abfd, section, symbols);
+
+ tblptr = section->relocation;
+ if (!tblptr)
+ return 0;
+
+ for (; count++ < section->reloc_count;)
+ *relptr++ = tblptr++;
+
+ *relptr = 0;
+ return section->reloc_count;
+}
+
+unsigned int
+DEFUN (elf_get_symtab, (abfd, alocation),
+ bfd * abfd AND
+ asymbol ** alocation)
+{
+
+ if (!elf_slurp_symbol_table (abfd, alocation))
+ return 0;
+ else
+ return bfd_get_symcount (abfd);
+}
+
+asymbol *
+DEFUN (elf_make_empty_symbol, (abfd),
+ bfd * abfd)
+{
+ elf_symbol_type *newsym;
+
+ newsym = (elf_symbol_type *) bfd_zalloc (abfd, sizeof (elf_symbol_type));
+ if (!newsym)
+ {
+ bfd_error = no_memory;
+ return NULL;
+ }
+ else
+ {
+ newsym->symbol.the_bfd = abfd;
+ return &newsym->symbol;
}
+}
- /* We rely on the zalloc to clear out the final symbol entry. */
+void
+DEFUN (elf_get_symbol_info, (ignore_abfd, symbol, ret),
+ bfd * ignore_abfd AND
+ asymbol * symbol AND
+ symbol_info * ret)
+{
+ bfd_symbol_info (symbol, ret);
+}
- /* obj_raw_syms macro uses a cast... */
- elf_tdata (abfd)->raw_syms = (PTR) x_symp;
+void
+DEFUN (elf_print_symbol, (ignore_abfd, filep, symbol, how),
+ bfd * ignore_abfd AND
+ PTR filep AND
+ asymbol * symbol AND
+ bfd_print_symbol_type how)
+{
+ FILE *file = (FILE *) filep;
+ switch (how)
+ {
+ case bfd_print_symbol_name:
+ fprintf (file, "%s", symbol->name);
+ break;
+ case bfd_print_symbol_more:
+ fprintf (file, "elf ");
+ fprintf_vma (file, symbol->value);
+ fprintf (file, " %lx", (long) symbol->flags);
+ break;
+ case bfd_print_symbol_all:
+ {
+ CONST char *section_name;
+ section_name = symbol->section ? symbol->section->name : "(*none*)";
+ bfd_print_symbol_vandf ((PTR) file, symbol);
+ fprintf (file, " %s\t%s",
+ section_name,
+ symbol->name);
+ }
+ break;
+ }
- bfd_get_symcount (abfd) = symcount = sym - symbase;
+}
- /* Fill in the user's symbol pointer vector if needed. */
- if (symptrs)
+alent *
+DEFUN (elf_get_lineno, (ignore_abfd, symbol),
+ bfd * ignore_abfd AND
+ asymbol * symbol)
+{
+ fprintf (stderr, "elf_get_lineno unimplemented\n");
+ fflush (stderr);
+ BFD_FAIL ();
+ return NULL;
+}
+
+boolean
+DEFUN (elf_set_arch_mach, (abfd, arch, machine),
+ bfd * abfd AND
+ enum bfd_architecture arch AND
+ unsigned long machine)
+{
+ /* Allow any architecture to be supported by the elf backend */
+ switch (arch)
{
- sym = symbase;
- while (symcount-- > 0)
- {
- *symptrs++ = &sym->symbol;
- sym++;
- }
- *symptrs = 0; /* Final null pointer */
+ case bfd_arch_unknown: /* EM_NONE */
+ case bfd_arch_sparc: /* EM_SPARC */
+ case bfd_arch_i386: /* EM_386 */
+ case bfd_arch_m68k: /* EM_68K */
+ case bfd_arch_m88k: /* EM_88K */
+ case bfd_arch_i860: /* EM_860 */
+ case bfd_arch_mips: /* EM_MIPS (MIPS R3000) */
+ case bfd_arch_hppa: /* EM_HPPA (HP PA_RISC) */
+ return bfd_default_set_arch_mach (abfd, arch, machine);
+ default:
+ return false;
}
+}
- return true;
+boolean
+DEFUN (elf_find_nearest_line, (abfd,
+ section,
+ symbols,
+ offset,
+ filename_ptr,
+ functionname_ptr,
+ line_ptr),
+ bfd * abfd AND
+ asection * section AND
+ asymbol ** symbols AND
+ bfd_vma offset AND
+ CONST char **filename_ptr AND
+ CONST char **functionname_ptr AND
+ unsigned int *line_ptr)
+{
+ return false;
}
-/* Return the number of bytes required to hold the symtab vector.
-
- Note that we base it on the count plus 1, since we will null terminate
- the vector allocated based on this size. However, the ELF symbol table
- always has a dummy entry as symbol #0, so it ends up even. */
+int
+DEFUN (elf_sizeof_headers, (abfd, reloc),
+ bfd * abfd AND
+ boolean reloc)
+{
+ fprintf (stderr, "elf_sizeof_headers unimplemented\n");
+ fflush (stderr);
+ BFD_FAIL ();
+ return 0;
+}
-unsigned int
-DEFUN (elf_get_symtab_upper_bound, (abfd), bfd * abfd)
+boolean
+DEFUN (elf_set_section_contents, (abfd, section, location, offset, count),
+ bfd * abfd AND
+ sec_ptr section AND
+ PTR location AND
+ file_ptr offset AND
+ bfd_size_type count)
{
- unsigned int symcount;
- unsigned int symtab_size = 0;
- Elf_Internal_Shdr *i_shdrp;
Elf_Internal_Shdr *hdr;
- i_shdrp = elf_elfsections (abfd);
- if (i_shdrp != NULL)
+ if (abfd->output_has_begun == false) /* set by bfd.c handler? */
{
- hdr = i_shdrp + elf_onesymtab (abfd);
- symcount = hdr->sh_size / sizeof (Elf_External_Sym);
- symtab_size = (symcount - 1 + 1) * (sizeof (asymbol));
+ /* do setup calculations (FIXME) */
+ prep_headers (abfd);
+ elf_compute_section_file_positions (abfd);
+ abfd->output_has_begun = true;
}
- return symtab_size;
-}
-/*
- This function return the number of bytes required to store the
- relocation information associated with section <<sect>>
- attached to bfd <<abfd>>
+ hdr = &elf_section_data(section)->this_hdr;
-*/
-unsigned int
-elf_get_reloc_upper_bound (abfd, asect)
- bfd *abfd;
- sec_ptr asect;
+ if (bfd_seek (abfd, hdr->sh_offset + offset, SEEK_SET) == -1)
+ return false;
+ if (bfd_write (location, 1, count, abfd) != count)
+ return false;
+
+ return true;
+}
+
+void
+DEFUN (elf_no_info_to_howto, (abfd, cache_ptr, dst),
+ bfd * abfd AND
+ arelent * cache_ptr AND
+ Elf_Internal_Rela * dst)
{
- if (asect->flags & SEC_RELOC)
- {
- /* either rel or rela */
- return asect->_raw_size;
- }
- else
- return 0;
+ fprintf (stderr, "elf RELA relocation support for target machine unimplemented\n");
+ fflush (stderr);
+ BFD_FAIL ();
}
-static boolean
-DEFUN (elf_slurp_reloca_table, (abfd, asect, symbols),
+void
+DEFUN (elf_no_info_to_howto_rel, (abfd, cache_ptr, dst),
bfd * abfd AND
- sec_ptr asect AND
- asymbol ** symbols)
+ arelent * cache_ptr AND
+ Elf_Internal_Rel * dst)
{
- Elf_External_Rela *native_relocs;
- arelent *reloc_cache;
- arelent *cache_ptr;
+ fprintf (stderr, "elf REL relocation support for target machine unimplemented\n");
+ fflush (stderr);
+ BFD_FAIL ();
+}
- unsigned int idx;
+\f
+/* Core file support */
- if (asect->relocation)
- return true;
- if (asect->reloc_count == 0)
- return true;
- if (asect->flags & SEC_CONSTRUCTOR)
- return true;
+#ifdef HAVE_PROCFS /* Some core file support requires host /proc files */
+#include <sys/procfs.h>
+#else
+#define bfd_prstatus(abfd, descdata, descsz, filepos) /* Define away */
+#define bfd_fpregset(abfd, descdata, descsz, filepos) /* Define away */
+#define bfd_prpsinfo(abfd, descdata, descsz, filepos) /* Define away */
+#endif
- bfd_seek (abfd, asect->rel_filepos, SEEK_SET);
- native_relocs = (Elf_External_Rela *)
- bfd_alloc (abfd, asect->reloc_count * sizeof (Elf_External_Rela));
- bfd_read ((PTR) native_relocs,
- sizeof (Elf_External_Rela), asect->reloc_count, abfd);
+#ifdef HAVE_PROCFS
- reloc_cache = (arelent *)
- bfd_alloc (abfd, (size_t) (asect->reloc_count * sizeof (arelent)));
+static void
+DEFUN (bfd_prstatus, (abfd, descdata, descsz, filepos),
+ bfd * abfd AND
+ char *descdata AND
+ int descsz AND
+ long filepos)
+{
+ asection *newsect;
+ prstatus_t *status = (prstatus_t *) 0;
- if (!reloc_cache)
+ if (descsz == sizeof (prstatus_t))
{
- bfd_error = no_memory;
- return false;
+ newsect = bfd_make_section (abfd, ".reg");
+ newsect->_raw_size = sizeof (status->pr_reg);
+ newsect->filepos = filepos + (long) &status->pr_reg;
+ newsect->flags = SEC_ALLOC | SEC_HAS_CONTENTS;
+ newsect->alignment_power = 2;
+ if ((core_prstatus (abfd) = bfd_alloc (abfd, descsz)) != NULL)
+ {
+ memcpy (core_prstatus (abfd), descdata, descsz);
+ }
}
+}
- for (idx = 0; idx < asect->reloc_count; idx++)
- {
-#ifdef RELOC_PROCESSING
- Elf_Internal_Rela dst;
- Elf_External_Rela *src;
-
- cache_ptr = reloc_cache + idx;
- src = native_relocs + idx;
- elf_swap_reloca_in (abfd, src, &dst);
-
- RELOC_PROCESSING (cache_ptr, &dst, symbols, abfd, asect);
-#else
- Elf_Internal_Rela dst;
- Elf_External_Rela *src;
-
- cache_ptr = reloc_cache + idx;
- src = native_relocs + idx;
+/* Stash a copy of the prpsinfo structure away for future use. */
- elf_swap_reloca_in (abfd, src, &dst);
+static void
+DEFUN (bfd_prpsinfo, (abfd, descdata, descsz, filepos),
+ bfd * abfd AND
+ char *descdata AND
+ int descsz AND
+ long filepos)
+{
+ asection *newsect;
- if (asect->flags & SEC_RELOC)
- {
- /* relocatable, so the offset is off of the section */
- cache_ptr->address = dst.r_offset + asect->vma;
- }
- else
+ if (descsz == sizeof (prpsinfo_t))
+ {
+ if ((core_prpsinfo (abfd) = bfd_alloc (abfd, descsz)) != NULL)
{
- /* non-relocatable, so the offset a virtual address */
- cache_ptr->address = dst.r_offset;
+ memcpy (core_prpsinfo (abfd), descdata, descsz);
}
- /* ELF_R_SYM(dst.r_info) is the symbol table offset; subtract 1
- because the first entry is NULL. */
- cache_ptr->sym_ptr_ptr = symbols + ELF_R_SYM (dst.r_info) - 1;
- {
- /* Is it an ELF section symbol? If so, translate it into a
- BFD section symbol. */
- asymbol *s = *(cache_ptr->sym_ptr_ptr);
- if (s->flags & BSF_SECTION_SYM)
- cache_ptr->sym_ptr_ptr = s->section->symbol_ptr_ptr;
- }
- cache_ptr->addend = dst.r_addend;
-
- /* Fill in the cache_ptr->howto field from dst.r_type */
- {
- struct elf_backend_data *ebd = get_elf_backend_data (abfd);
- (*ebd->elf_info_to_howto) (abfd, cache_ptr, &dst);
- }
-#endif
}
-
- asect->relocation = reloc_cache;
- return true;
}
-#ifdef DEBUG
static void
-elf_debug_section (str, num, hdr)
- char *str;
- int num;
- Elf_Internal_Shdr *hdr;
+DEFUN (bfd_fpregset, (abfd, descdata, descsz, filepos),
+ bfd * abfd AND
+ char *descdata AND
+ int descsz AND
+ long filepos)
{
- fprintf (stderr, "\nSection#%d '%s' 0x%.8lx\n", num, str, (long) hdr);
- fprintf (stderr, "sh_name = %ld\n", (long) hdr->sh_name);
- fprintf (stderr, "sh_type = %ld\n", (long) hdr->sh_type);
- fprintf (stderr, "sh_flags = %ld\n", (long) hdr->sh_flags);
- fprintf (stderr, "sh_addr = %ld\n", (long) hdr->sh_addr);
- fprintf (stderr, "sh_offset = %ld\n", (long) hdr->sh_offset);
- fprintf (stderr, "sh_size = %ld\n", (long) hdr->sh_size);
- fprintf (stderr, "sh_link = %ld\n", (long) hdr->sh_link);
- fprintf (stderr, "sh_info = %ld\n", (long) hdr->sh_info);
- fprintf (stderr, "sh_addralign = %ld\n", (long) hdr->sh_addralign);
- fprintf (stderr, "sh_entsize = %ld\n", (long) hdr->sh_entsize);
- fprintf (stderr, "rawdata = 0x%.8lx\n", (long) hdr->rawdata);
- fprintf (stderr, "contents = 0x%.8lx\n", (long) hdr->contents);
- fprintf (stderr, "size = %ld\n", (long) hdr->size);
- fflush (stderr);
-}
+ asection *newsect;
-static void
-elf_debug_file (ehdrp)
- Elf_Internal_Ehdr *ehdrp;
-{
- fprintf (stderr, "e_entry = 0x%.8lx\n", (long) ehdrp->e_entry);
- fprintf (stderr, "e_phoff = %ld\n", (long) ehdrp->e_phoff);
- fprintf (stderr, "e_phnum = %ld\n", (long) ehdrp->e_phnum);
- fprintf (stderr, "e_phentsize = %ld\n", (long) ehdrp->e_phentsize);
- fprintf (stderr, "e_shoff = %ld\n", (long) ehdrp->e_shoff);
- fprintf (stderr, "e_shnum = %ld\n", (long) ehdrp->e_shnum);
- fprintf (stderr, "e_shentsize = %ld\n", (long) ehdrp->e_shentsize);
+ newsect = bfd_make_section (abfd, ".reg2");
+ newsect->_raw_size = descsz;
+ newsect->filepos = filepos;
+ newsect->flags = SEC_ALLOC | SEC_HAS_CONTENTS;
+ newsect->alignment_power = 2;
}
-#endif
-static boolean
-DEFUN (elf_slurp_reloc_table, (abfd, asect, symbols),
- bfd * abfd AND
- sec_ptr asect AND
- asymbol ** symbols)
+#endif /* HAVE_PROCFS */
+
+/* Return a pointer to the args (including the command name) that were
+ seen by the program that generated the core dump. Note that for
+ some reason, a spurious space is tacked onto the end of the args
+ in some (at least one anyway) implementations, so strip it off if
+ it exists. */
+
+char *
+DEFUN (elf_core_file_failing_command, (abfd),
+ bfd * abfd)
{
- Elf_External_Rel *native_relocs;
- arelent *reloc_cache;
- arelent *cache_ptr;
- Elf_Internal_Shdr *i_shdrp;
- Elf_Internal_Shdr *data_hdr;
- ElfNAME (Off) data_off;
- ElfNAME (Word) data_max;
- char buf[4]; /* FIXME -- might be elf64 */
+#ifdef HAVE_PROCFS
+ if (core_prpsinfo (abfd))
+ {
+ prpsinfo_t *p = core_prpsinfo (abfd);
+ char *scan = p->pr_psargs;
+ while (*scan++)
+ {;
+ }
+ scan -= 2;
+ if ((scan > p->pr_psargs) && (*scan == ' '))
+ {
+ *scan = '\000';
+ }
+ return p->pr_psargs;
+ }
+#endif
+ return NULL;
+}
- unsigned int idx;
+/* Return the number of the signal that caused the core dump. Presumably,
+ since we have a core file, we got a signal of some kind, so don't bother
+ checking the other process status fields, just return the signal number.
+ */
- if (asect->relocation)
- return true;
- if (asect->reloc_count == 0)
- return true;
- if (asect->flags & SEC_CONSTRUCTOR)
- return true;
+int
+DEFUN (elf_core_file_failing_signal, (abfd),
+ bfd * abfd)
+{
+#ifdef HAVE_PROCFS
+ if (core_prstatus (abfd))
+ {
+ return ((prstatus_t *) (core_prstatus (abfd)))->pr_cursig;
+ }
+#endif
+ return -1;
+}
- bfd_seek (abfd, asect->rel_filepos, SEEK_SET);
- native_relocs = (Elf_External_Rel *)
- bfd_alloc (abfd, asect->reloc_count * sizeof (Elf_External_Rel));
- bfd_read ((PTR) native_relocs,
- sizeof (Elf_External_Rel), asect->reloc_count, abfd);
+/* Check to see if the core file could reasonably be expected to have
+ come for the current executable file. Note that by default we return
+ true unless we find something that indicates that there might be a
+ problem.
+ */
- reloc_cache = (arelent *)
- bfd_alloc (abfd, (size_t) (asect->reloc_count * sizeof (arelent)));
+boolean
+DEFUN (elf_core_file_matches_executable_p, (core_bfd, exec_bfd),
+ bfd * core_bfd AND
+ bfd * exec_bfd)
+{
+#ifdef HAVE_PROCFS
+ char *corename;
+ char *execname;
+#endif
- if (!reloc_cache)
+ /* First, xvecs must match since both are ELF files for the same target. */
+
+ if (core_bfd->xvec != exec_bfd->xvec)
{
- bfd_error = no_memory;
+ bfd_error = system_call_error;
return false;
}
- /* Get the offset of the start of the segment we are relocating to read in
- the implicit addend. */
- i_shdrp = elf_elfsections (abfd);
- data_hdr = i_shdrp + elf_section_from_bfd_section (abfd, asect);
- data_off = data_hdr->sh_offset;
- data_max = data_hdr->sh_size - sizeof (buf) + 1;
+#ifdef HAVE_PROCFS
-#if DEBUG & 2
- elf_debug_section ("data section", data_hdr - i_shdrp, data_hdr);
-#endif
+ /* If no prpsinfo, just return true. Otherwise, grab the last component
+ of the exec'd pathname from the prpsinfo. */
- for (idx = 0; idx < asect->reloc_count; idx++)
+ if (core_prpsinfo (core_bfd))
{
-#ifdef RELOC_PROCESSING
- Elf_Internal_Rel dst;
- Elf_External_Rel *src;
-
- cache_ptr = reloc_cache + idx;
- src = native_relocs + idx;
- elf_swap_reloc_in (abfd, src, &dst);
-
- RELOC_PROCESSING (cache_ptr, &dst, symbols, abfd, asect);
-#else
- Elf_Internal_Rel dst;
- Elf_External_Rel *src;
+ corename = (((struct prpsinfo *) core_prpsinfo (core_bfd))->pr_fname);
+ }
+ else
+ {
+ return true;
+ }
- cache_ptr = reloc_cache + idx;
- src = native_relocs + idx;
+ /* Find the last component of the executable pathname. */
- elf_swap_reloc_in (abfd, src, &dst);
+ if ((execname = strrchr (exec_bfd->filename, '/')) != NULL)
+ {
+ execname++;
+ }
+ else
+ {
+ execname = (char *) exec_bfd->filename;
+ }
- if (asect->flags & SEC_RELOC)
- {
- /* relocatable, so the offset is off of the section */
- cache_ptr->address = dst.r_offset + asect->vma;
- }
- else
- {
- /* non-relocatable, so the offset a virtual address */
- cache_ptr->address = dst.r_offset;
- }
- /* ELF_R_SYM(dst.r_info) is the symbol table offset...
- -1 is to skip the dummy symbol table entry */
- cache_ptr->sym_ptr_ptr = symbols + ELF_R_SYM (dst.r_info) - 1;
- BFD_ASSERT (dst.r_offset <= data_max);
- if (bfd_seek (abfd, data_off + dst.r_offset, SEEK_SET) != 0
- || bfd_read ((PTR) buf, sizeof (buf), 1, abfd) != sizeof (buf))
- {
- bfd_error = system_call_error;
- return false;
- }
+ /* See if they match */
- cache_ptr->addend = (*abfd->xvec->bfd_getx_signed_32) ((bfd_byte *) buf);
+ return strcmp (execname, corename) ? false : true;
- /* Fill in the cache_ptr->howto field from dst.r_type */
- {
- struct elf_backend_data *ebd = get_elf_backend_data (abfd);
- (*ebd->elf_info_to_howto_rel) (abfd, cache_ptr, &dst);
- }
-#endif
- }
+#else
- asect->relocation = reloc_cache;
return true;
-}
-unsigned int
-elf_canonicalize_reloc (abfd, section, relptr, symbols)
- bfd *abfd;
- sec_ptr section;
- arelent **relptr;
- asymbol **symbols;
-{
- arelent *tblptr = section->relocation;
- unsigned int count = 0;
- int use_rela_p = get_elf_backend_data (abfd)->use_rela_p;
+#endif /* HAVE_PROCFS */
+}
- /* snarfed from coffcode.h */
- if (use_rela_p)
- elf_slurp_reloca_table (abfd, section, symbols);
- else
- elf_slurp_reloc_table (abfd, section, symbols);
+/* ELF core files contain a segment of type PT_NOTE, that holds much of
+ the information that would normally be available from the /proc interface
+ for the process, at the time the process dumped core. Currently this
+ includes copies of the prstatus, prpsinfo, and fpregset structures.
- tblptr = section->relocation;
- if (!tblptr)
- return 0;
+ Since these structures are potentially machine dependent in size and
+ ordering, bfd provides two levels of support for them. The first level,
+ available on all machines since it does not require that the host
+ have /proc support or the relevant include files, is to create a bfd
+ section for each of the prstatus, prpsinfo, and fpregset structures,
+ without any interpretation of their contents. With just this support,
+ the bfd client will have to interpret the structures itself. Even with
+ /proc support, it might want these full structures for it's own reasons.
- for (; count++ < section->reloc_count;)
- *relptr++ = tblptr++;
+ In the second level of support, where HAVE_PROCFS is defined, bfd will
+ pick apart the structures to gather some additional information that
+ clients may want, such as the general register set, the name of the
+ exec'ed file and its arguments, the signal (if any) that caused the
+ core dump, etc.
- *relptr = 0;
- return section->reloc_count;
-}
+ */
-unsigned int
-DEFUN (elf_get_symtab, (abfd, alocation),
+static boolean
+DEFUN (elf_corefile_note, (abfd, hdr),
bfd * abfd AND
- asymbol ** alocation)
+ Elf_Internal_Phdr * hdr)
{
+ Elf_External_Note *x_note_p; /* Elf note, external form */
+ Elf_Internal_Note i_note; /* Elf note, internal form */
+ char *buf = NULL; /* Entire note segment contents */
+ char *namedata; /* Name portion of the note */
+ char *descdata; /* Descriptor portion of the note */
+ char *sectname; /* Name to use for new section */
+ long filepos; /* File offset to descriptor data */
+ asection *newsect;
+
+ if (hdr->p_filesz > 0
+ && (buf = (char *) bfd_xmalloc (hdr->p_filesz)) != NULL
+ && bfd_seek (abfd, hdr->p_offset, SEEK_SET) != -1
+ && bfd_read ((PTR) buf, hdr->p_filesz, 1, abfd) == hdr->p_filesz)
+ {
+ x_note_p = (Elf_External_Note *) buf;
+ while ((char *) x_note_p < (buf + hdr->p_filesz))
+ {
+ i_note.namesz = bfd_h_get_32 (abfd, (bfd_byte *) x_note_p->namesz);
+ i_note.descsz = bfd_h_get_32 (abfd, (bfd_byte *) x_note_p->descsz);
+ i_note.type = bfd_h_get_32 (abfd, (bfd_byte *) x_note_p->type);
+ namedata = x_note_p->name;
+ descdata = namedata + BFD_ALIGN (i_note.namesz, 4);
+ filepos = hdr->p_offset + (descdata - buf);
+ switch (i_note.type)
+ {
+ case NT_PRSTATUS:
+ /* process descdata as prstatus info */
+ bfd_prstatus (abfd, descdata, i_note.descsz, filepos);
+ sectname = ".prstatus";
+ break;
+ case NT_FPREGSET:
+ /* process descdata as fpregset info */
+ bfd_fpregset (abfd, descdata, i_note.descsz, filepos);
+ sectname = ".fpregset";
+ break;
+ case NT_PRPSINFO:
+ /* process descdata as prpsinfo */
+ bfd_prpsinfo (abfd, descdata, i_note.descsz, filepos);
+ sectname = ".prpsinfo";
+ break;
+ default:
+ /* Unknown descriptor, just ignore it. */
+ sectname = NULL;
+ break;
+ }
+ if (sectname != NULL)
+ {
+ newsect = bfd_make_section (abfd, sectname);
+ newsect->_raw_size = i_note.descsz;
+ newsect->filepos = filepos;
+ newsect->flags = SEC_ALLOC | SEC_HAS_CONTENTS;
+ newsect->alignment_power = 2;
+ }
+ x_note_p = (Elf_External_Note *)
+ (descdata + BFD_ALIGN (i_note.descsz, 4));
+ }
+ }
+ if (buf != NULL)
+ {
+ free (buf);
+ }
+ return true;
- if (!elf_slurp_symbol_table (abfd, alocation))
- return 0;
- else
- return bfd_get_symcount (abfd);
}
-asymbol *
-DEFUN (elf_make_empty_symbol, (abfd),
- bfd * abfd)
+/* Core files are simply standard ELF formatted files that partition
+ the file using the execution view of the file (program header table)
+ rather than the linking view. In fact, there is no section header
+ table in a core file.
+
+ The process status information (including the contents of the general
+ register set) and the floating point register set are stored in a
+ segment of type PT_NOTE. We handcraft a couple of extra bfd sections
+ that allow standard bfd access to the general registers (.reg) and the
+ floating point registers (.reg2).
+
+ */
+
+bfd_target *
+DEFUN (elf_core_file_p, (abfd), bfd * abfd)
{
- elf_symbol_type *newsym;
+ Elf_External_Ehdr x_ehdr; /* Elf file header, external form */
+ Elf_Internal_Ehdr *i_ehdrp; /* Elf file header, internal form */
+ Elf_External_Phdr x_phdr; /* Program header table entry, external form */
+ Elf_Internal_Phdr *i_phdrp; /* Program header table, internal form */
+ unsigned int phindex;
- newsym = (elf_symbol_type *) bfd_zalloc (abfd, sizeof (elf_symbol_type));
- if (!newsym)
+ /* Read in the ELF header in external format. */
+
+ if (bfd_read ((PTR) & x_ehdr, sizeof (x_ehdr), 1, abfd) != sizeof (x_ehdr))
{
- bfd_error = no_memory;
+ bfd_error = system_call_error;
return NULL;
}
- else
+
+ /* Now check to see if we have a valid ELF file, and one that BFD can
+ make use of. The magic number must match, the address size ('class')
+ and byte-swapping must match our XVEC entry, and it must have a
+ program header table (FIXME: See comments re segments at top of this
+ file). */
+
+ if (elf_file_p (&x_ehdr) == false)
{
- newsym->symbol.the_bfd = abfd;
- return &newsym->symbol;
+ wrong:
+ bfd_error = wrong_format;
+ return NULL;
}
-}
-void
-DEFUN (elf_get_symbol_info, (ignore_abfd, symbol, ret),
- bfd * ignore_abfd AND
- asymbol * symbol AND
- symbol_info * ret)
-{
- bfd_symbol_info (symbol, ret);
-}
+ /* FIXME, Check EI_VERSION here ! */
-void
-DEFUN (elf_print_symbol, (ignore_abfd, filep, symbol, how),
- bfd * ignore_abfd AND
- PTR filep AND
- asymbol * symbol AND
- bfd_print_symbol_type how)
-{
- FILE *file = (FILE *) filep;
- switch (how)
+ {
+#if ARCH_SIZE == 32
+ int desired_address_size = ELFCLASS32;
+#endif
+#if ARCH_SIZE == 64
+ int desired_address_size = ELFCLASS64;
+#endif
+
+ if (x_ehdr.e_ident[EI_CLASS] != desired_address_size)
+ goto wrong;
+ }
+
+ /* Switch xvec to match the specified byte order. */
+ switch (x_ehdr.e_ident[EI_DATA])
{
- case bfd_print_symbol_name:
- fprintf (file, "%s", symbol->name);
- break;
- case bfd_print_symbol_more:
- fprintf (file, "elf ");
- fprintf_vma (file, symbol->value);
- fprintf (file, " %lx", (long) symbol->flags);
+ case ELFDATA2MSB: /* Big-endian */
+ if (abfd->xvec->byteorder_big_p == false)
+ goto wrong;
break;
- case bfd_print_symbol_all:
- {
- CONST char *section_name;
- section_name = symbol->section ? symbol->section->name : "(*none*)";
- bfd_print_symbol_vandf ((PTR) file, symbol);
- fprintf (file, " %s\t%s",
- section_name,
- symbol->name);
- }
+ case ELFDATA2LSB: /* Little-endian */
+ if (abfd->xvec->byteorder_big_p == true)
+ goto wrong;
break;
+ case ELFDATANONE: /* No data encoding specified */
+ default: /* Unknown data encoding specified */
+ goto wrong;
}
-}
-
-alent *
-DEFUN (elf_get_lineno, (ignore_abfd, symbol),
- bfd * ignore_abfd AND
- asymbol * symbol)
-{
- fprintf (stderr, "elf_get_lineno unimplemented\n");
- fflush (stderr);
- BFD_FAIL ();
- return NULL;
-}
+ /* Allocate an instance of the elf_obj_tdata structure and hook it up to
+ the tdata pointer in the bfd. */
-boolean
-DEFUN (elf_set_arch_mach, (abfd, arch, machine),
- bfd * abfd AND
- enum bfd_architecture arch AND
- unsigned long machine)
-{
- /* Allow any architecture to be supported by the elf backend */
- switch (arch)
+ elf_tdata (abfd) =
+ (struct elf_obj_tdata *) bfd_zalloc (abfd, sizeof (struct elf_obj_tdata));
+ if (elf_tdata (abfd) == NULL)
{
- case bfd_arch_unknown: /* EM_NONE */
- case bfd_arch_sparc: /* EM_SPARC */
- case bfd_arch_i386: /* EM_386 */
- case bfd_arch_m68k: /* EM_68K */
- case bfd_arch_m88k: /* EM_88K */
- case bfd_arch_i860: /* EM_860 */
- case bfd_arch_mips: /* EM_MIPS (MIPS R3000) */
- case bfd_arch_hppa: /* EM_HPPA (HP PA_RISC) */
- return bfd_default_set_arch_mach (abfd, arch, machine);
- default:
- return false;
+ bfd_error = no_memory;
+ return NULL;
}
-}
-boolean
-DEFUN (elf_find_nearest_line, (abfd,
- section,
- symbols,
- offset,
- filename_ptr,
- functionname_ptr,
- line_ptr),
- bfd * abfd AND
- asection * section AND
- asymbol ** symbols AND
- bfd_vma offset AND
- CONST char **filename_ptr AND
- CONST char **functionname_ptr AND
- unsigned int *line_ptr)
-{
- return false;
-}
+ /* FIXME, `wrong' returns from this point onward, leak memory. */
-int
-DEFUN (elf_sizeof_headers, (abfd, reloc),
- bfd * abfd AND
- boolean reloc)
-{
- fprintf (stderr, "elf_sizeof_headers unimplemented\n");
- fflush (stderr);
- BFD_FAIL ();
- return 0;
-}
+ /* Now that we know the byte order, swap in the rest of the header */
+ i_ehdrp = elf_elfheader (abfd);
+ elf_swap_ehdr_in (abfd, &x_ehdr, i_ehdrp);
+#if DEBUG & 1
+ elf_debug_file (i_ehdrp);
+#endif
-boolean
-DEFUN (elf_set_section_contents, (abfd, section, location, offset, count),
- bfd * abfd AND
- sec_ptr section AND
- PTR location AND
- file_ptr offset AND
- bfd_size_type count)
-{
- int dest_sect;
+ /* If there is no program header, or the type is not a core file, then
+ we are hosed. */
+ if (i_ehdrp->e_phoff == 0 || i_ehdrp->e_type != ET_CORE)
+ goto wrong;
- if (abfd->output_has_begun == false) /* set by bfd.c handler? */
+ /* Allocate space for a copy of the program header table in
+ internal form, seek to the program header table in the file,
+ read it in, and convert it to internal form. As a simple sanity
+ check, verify that the what BFD thinks is the size of each program
+ header table entry actually matches the size recorded in the file. */
+
+ if (i_ehdrp->e_phentsize != sizeof (x_phdr))
+ goto wrong;
+ i_phdrp = (Elf_Internal_Phdr *)
+ bfd_alloc (abfd, sizeof (*i_phdrp) * i_ehdrp->e_phnum);
+ if (!i_phdrp)
{
- /* do setup calculations (FIXME) */
- elf_compute_section_file_positions (abfd);
- abfd->output_has_begun = true;
+ bfd_error = no_memory;
+ return NULL;
+ }
+ if (bfd_seek (abfd, i_ehdrp->e_phoff, SEEK_SET) == -1)
+ {
+ bfd_error = system_call_error;
+ return NULL;
+ }
+ for (phindex = 0; phindex < i_ehdrp->e_phnum; phindex++)
+ {
+ if (bfd_read ((PTR) & x_phdr, sizeof (x_phdr), 1, abfd)
+ != sizeof (x_phdr))
+ {
+ bfd_error = system_call_error;
+ return NULL;
+ }
+ elf_swap_phdr_in (abfd, &x_phdr, i_phdrp + phindex);
}
- dest_sect = elf_section_from_bfd_section (abfd, section);
- if (!dest_sect)
- return false;
-
- if (bfd_seek (abfd, elf_elfsections (abfd)[dest_sect].sh_offset + offset, SEEK_SET) == -1)
- return false;
- if (bfd_write (location, 1, count, abfd) != count)
- return false;
- return true;
-}
-
-void
-DEFUN (elf_no_info_to_howto, (abfd, cache_ptr, dst),
- bfd * abfd AND
- arelent * cache_ptr AND
- Elf_Internal_Rela * dst)
-{
- fprintf (stderr, "elf RELA relocation support for target machine unimplemented\n");
- fflush (stderr);
- BFD_FAIL ();
-}
+ /* Once all of the program headers have been read and converted, we
+ can start processing them. */
-void
-DEFUN (elf_no_info_to_howto_rel, (abfd, cache_ptr, dst),
- bfd * abfd AND
- arelent * cache_ptr AND
- Elf_Internal_Rel * dst)
-{
- fprintf (stderr, "elf REL relocation support for target machine unimplemented\n");
- fflush (stderr);
- BFD_FAIL ();
-}
+ for (phindex = 0; phindex < i_ehdrp->e_phnum; phindex++)
+ {
+ bfd_section_from_phdr (abfd, i_phdrp + phindex, phindex);
+ if ((i_phdrp + phindex)->p_type == PT_NOTE)
+ {
+ elf_corefile_note (abfd, i_phdrp + phindex);
+ }
+ }
-boolean
-DEFUN (elf_get_sect_thunk, (abfd, est),
- bfd * abfd AND
- elf_sect_thunk * est)
-{
- if (est == (elf_sect_thunk *) NULL)
- return false;
+ /* Remember the entry point specified in the ELF file header. */
- est->i_ehdr = elf_elfheader (abfd);
- est->i_shdrp = elf_elfsections (abfd);
- est->shstrtab = elf_shstrtab (abfd);
- est->symtab_section = elf_onesymtab (abfd); /* filled in by elf_fake */
+ bfd_get_start_address (abfd) = i_ehdrp->e_entry;
- return true;
+ return abfd->xvec;
}
projects / binutils-gdb.git / commitdiff