/* Support for the generic parts of most COFF variants, for BFD.
- Copyright (C) 1990-2020 Free Software Foundation, Inc.
+ Copyright (C) 1990-2021 Free Software Foundation, Inc.
Written by Cygnus Support.
This file is part of BFD, the Binary File Descriptor library.
#define GNU_LINKONCE_WT ".gnu.linkonce.wt."
#define DOT_RELOC ".reloc"
+#if defined(COFF_WITH_PE) || defined(COFF_GO32_EXE) || defined(COFF_GO32)
+# define COFF_WITH_EXTENDED_RELOC_COUNTER
+#endif
+
#if defined (COFF_LONG_SECTION_NAMES)
/* Needed to expand the inputs to BLANKOR1TOODD. */
#define COFFLONGSECTIONCATHELPER(x,y) x ## y
static flagword handle_COMDAT
(bfd *, flagword, void *, const char *, asection *);
#endif
-#ifdef COFF_IMAGE_WITH_PE
-static bfd_boolean coff_read_word
- (bfd *, unsigned int *);
-static unsigned int coff_compute_checksum
- (bfd *);
-static bfd_boolean coff_apply_checksum
- (bfd *);
-#endif
#ifdef TICOFF
static bfd_boolean ticoff0_bad_format_hook
(bfd *, void * );
#ifndef COFF_WITH_PE
static bfd_boolean
-styp_to_sec_flags (bfd *abfd ATTRIBUTE_UNUSED,
+styp_to_sec_flags (bfd *abfd,
void * hdr,
const char *name,
asection *section ATTRIBUTE_UNUSED,
sec_flags = (SEC_LOAD | SEC_ALLOC);
#endif /* STYP_SDATA */
+ if ((bfd_applicable_section_flags (abfd) & SEC_SMALL_DATA) != 0
+ && (CONST_STRNEQ (name, ".sbss")
+ || CONST_STRNEQ (name, ".sdata")))
+ sec_flags |= SEC_SMALL_DATA;
+
#if defined (COFF_LONG_SECTION_NAMES) && defined (COFF_SUPPORT_GNU_LINKONCE)
/* As a GNU extension, if the name begins with .gnu.linkonce, we
only link a single copy of the section. This is used to support
}
}
+ if ((bfd_applicable_section_flags (abfd) & SEC_SMALL_DATA) != 0
+ && (CONST_STRNEQ (name, ".sbss")
+ || CONST_STRNEQ (name, ".sdata")))
+ sec_flags |= SEC_SMALL_DATA;
+
#if defined (COFF_LONG_SECTION_NAMES) && defined (COFF_SUPPORT_GNU_LINKONCE)
/* As a GNU extension, if the name begins with .gnu.linkonce, we
only link a single copy of the section. This is used to support
}
#else /* ! RS6000COFF_C */
+#if defined (COFF_GO32_EXE) || defined (COFF_GO32)
+
+static void
+coff_set_alignment_hook (bfd * abfd, asection * section, void * scnhdr)
+{
+ struct internal_scnhdr *hdr = (struct internal_scnhdr *) scnhdr;
+
+ /* Check for extended relocs. */
+ if (hdr->s_flags & IMAGE_SCN_LNK_NRELOC_OVFL)
+ {
+ struct external_reloc dst;
+ struct internal_reloc n;
+ const file_ptr oldpos = bfd_tell (abfd);
+ const bfd_size_type relsz = bfd_coff_relsz (abfd);
+
+ if (bfd_seek (abfd, (file_ptr) hdr->s_relptr, 0) != 0)
+ return;
+ if (bfd_bread (& dst, relsz, abfd) != relsz)
+ return;
+
+ coff_swap_reloc_in (abfd, &dst, &n);
+ if (bfd_seek (abfd, oldpos, 0) != 0)
+ return;
+ section->reloc_count = hdr->s_nreloc = n.r_vaddr - 1;
+ section->rel_filepos += relsz;
+ }
+ else if (hdr->s_nreloc == 0xffff)
+ _bfd_error_handler
+ (_("%pB: warning: claims to have 0xffff relocs, without overflow"),
+ abfd);
+}
+
+#else /* ! COFF_GO32_EXE && ! COFF_GO32 */
static void
coff_set_alignment_hook (bfd *abfd ATTRIBUTE_UNUSED,
{
}
+#endif /* ! COFF_GO32_EXE && ! COFF_GO32 */
#endif /* ! RS6000COFF_C */
#endif /* ! COFF_WITH_PE */
#endif /* ! COFF_ALIGN_IN_SECTION_HEADER */
abfd->flags |= HAS_DEBUG;
#endif
- if ((internal_f->f_flags & F_GO32STUB) != 0)
- {
- coff->go32stub = (char *) bfd_alloc (abfd, (bfd_size_type) GO32_STUBSIZE);
- if (coff->go32stub == NULL)
- return NULL;
- }
- if (coff->go32stub != NULL)
- memcpy (coff->go32stub, internal_f->go32stub, GO32_STUBSIZE);
-
return coff;
}
#endif
machine = 0;
switch (internal_f->f_magic)
{
-#ifdef PPCMAGIC
- case PPCMAGIC:
- arch = bfd_arch_powerpc;
- break;
-#endif
#ifdef I386MAGIC
case I386MAGIC:
case I386PTXMAGIC:
if (bfd_seek (abfd, s->rel_filepos, SEEK_SET) != 0)
return FALSE;
-#ifdef COFF_WITH_PE
- if (obj_pe (abfd) && s->reloc_count >= 0xffff)
+#ifdef COFF_WITH_EXTENDED_RELOC_COUNTER
+ if ((obj_pe (abfd) || obj_go32 (abfd)) && s->reloc_count >= 0xffff)
{
/* Encode real count here as first reloc. */
struct internal_reloc n;
}
#ifdef TARG_AUX
- if (p != NULL)
- free (p);
+ free (p);
#endif
}
return TRUE;
#endif
-#ifdef PPCMAGIC
- case bfd_arch_powerpc:
- *magicp = PPCMAGIC;
- return TRUE;
-#endif
-
#if defined(I386MAGIC) || defined(AMD64MAGIC)
case bfd_arch_i386:
#if defined(I386MAGIC)
#ifdef RS6000COFF_C
case bfd_arch_rs6000:
-#ifndef PPCMAGIC
case bfd_arch_powerpc:
-#endif
BFD_ASSERT (bfd_get_flavour (abfd) == bfd_target_xcoff_flavour);
*magicp = bfd_xcoff_magic_number (abfd);
return TRUE;
#ifdef COFF_IMAGE_WITH_PE
-static unsigned int pelength;
-static unsigned int peheader;
-
static bfd_boolean
-coff_read_word (bfd *abfd, unsigned int *value)
+coff_read_word (bfd *abfd, unsigned int *value, unsigned int *pelength)
{
unsigned char b[2];
int status;
else
*value = (unsigned int) (b[0] + (b[1] << 8));
- pelength += (unsigned int) status;
+ *pelength += status;
return TRUE;
}
static unsigned int
-coff_compute_checksum (bfd *abfd)
+coff_compute_checksum (bfd *abfd, unsigned int *pelength)
{
bfd_boolean more_data;
file_ptr filepos;
unsigned int total;
total = 0;
- pelength = 0;
+ *pelength = 0;
filepos = (file_ptr) 0;
do
if (bfd_seek (abfd, filepos, SEEK_SET) != 0)
return 0;
- more_data = coff_read_word (abfd, &value);
+ more_data = coff_read_word (abfd, &value, pelength);
total += value;
total = 0xffff & (total + (total >> 0x10));
filepos += 2;
{
unsigned int computed;
unsigned int checksum = 0;
+ unsigned int peheader;
+ unsigned int pelength;
if (bfd_seek (abfd, 0x3c, SEEK_SET) != 0)
return FALSE;
- if (!coff_read_word (abfd, &peheader))
+ if (!coff_read_word (abfd, &peheader, &pelength))
return FALSE;
if (bfd_seek (abfd, peheader + 0x58, SEEK_SET) != 0)
if (bfd_seek (abfd, peheader, SEEK_SET) != 0)
return FALSE;
- computed = coff_compute_checksum (abfd);
+ computed = coff_compute_checksum (abfd, &pelength);
checksum = computed + pelength;
for (current = abfd->sections; current != NULL; current =
current->next)
{
-#ifdef COFF_WITH_PE
+#ifdef COFF_WITH_EXTENDED_RELOC_COUNTER
/* We store the actual reloc count in the first reloc's addr. */
- if (obj_pe (abfd) && current->reloc_count >= 0xffff)
+ if ((obj_pe (abfd) || obj_go32 (abfd)) && current->reloc_count >= 0xffff)
reloc_count ++;
#endif
reloc_count += current->reloc_count;
{
current->rel_filepos = reloc_base;
reloc_base += current->reloc_count * bfd_coff_relsz (abfd);
-#ifdef COFF_WITH_PE
+#ifdef COFF_WITH_EXTENDED_RELOC_COUNTER
/* Extra reloc to hold real count. */
- if (obj_pe (abfd) && current->reloc_count >= 0xffff)
+ if ((obj_pe (abfd) || obj_go32 (abfd)) && current->reloc_count >= 0xffff)
reloc_base += bfd_coff_relsz (abfd);
#endif
}
SCNHDR buff;
bfd_size_type amt = bfd_coff_scnhsz (abfd);
- if (coff_swap_scnhdr_out (abfd, §ion, &buff) == 0
+ if (bfd_coff_swap_scnhdr_out (abfd, §ion, &buff) == 0
|| bfd_bwrite (& buff, amt, abfd) != amt)
return FALSE;
}
scnhdr.s_nlnno = current->target_index;
scnhdr.s_flags = STYP_OVRFLO;
amt = bfd_coff_scnhsz (abfd);
- if (coff_swap_scnhdr_out (abfd, &scnhdr, &buff) == 0
+ if (bfd_coff_swap_scnhdr_out (abfd, &scnhdr, &buff) == 0
|| bfd_bwrite (& buff, amt, abfd) != amt)
return FALSE;
}
#endif
#endif
+#if defined (COFF_GO32_EXE) || defined (COFF_GO32)
+ /* Pad section headers. */
+ if ((abfd->flags & EXEC_P) && abfd->sections != NULL)
+ {
+ file_ptr cur_ptr = scn_base
+ + abfd->section_count * bfd_coff_scnhsz (abfd);
+ long fill_size = (abfd->sections->filepos - cur_ptr);
+ bfd_byte *b = bfd_zmalloc (fill_size);
+ if (b)
+ {
+ bfd_bwrite ((PTR)b, fill_size, abfd);
+ free (b);
+ }
+ }
+#endif
+
/* OK, now set up the filehdr... */
/* Don't include the internal abs section in the section count */
internal_a.magic = ZMAGIC;
#endif
-#if defined(PPC_PE)
-#define __A_MAGIC_SET__
- internal_a.magic = IMAGE_NT_OPTIONAL_HDR_MAGIC;
-#endif
-
#if defined MCORE_PE
#define __A_MAGIC_SET__
internal_a.magic = IMAGE_NT_OPTIONAL_HDR_MAGIC;
return FALSE;
}
#endif
-#ifdef COFF_IMAGE_WITH_PE
-#ifdef PPC_PE
- else if ((abfd->flags & EXEC_P) != 0)
- {
- bfd_byte b;
-
- /* PowerPC PE appears to require that all executable files be
- rounded up to the page size. */
- b = 0;
- if (bfd_seek (abfd,
- (file_ptr) BFD_ALIGN (sym_base, COFF_PAGE_SIZE) - 1,
- SEEK_SET) != 0
- || bfd_bwrite (&b, (bfd_size_type) 1, abfd) != 1)
- return FALSE;
- }
-#endif
-#endif
-
/* If bfd_get_symcount (abfd) != 0, then we are not using the COFF
backend linker, and obj_raw_syment_count is not valid until after
coff_write_symbols is called. */
case C_THUMBEXT:
case C_THUMBEXTFUNC:
#endif
+#ifdef RS6000COFF_C
+ case C_HIDEXT:
+#if ! defined _AIX52 && ! defined AIX_WEAK_SUPPORT
+ case C_AIX_WEAKEXT:
+#endif
+#endif
#ifdef C_SYSTEM
case C_SYSTEM:
#endif
else
return COFF_SYMBOL_COMMON;
}
+#ifdef RS6000COFF_C
+ if (syment->n_sclass == C_HIDEXT)
+ return COFF_SYMBOL_LOCAL;
+#endif
return COFF_SYMBOL_GLOBAL;
default:
'/', /* AR_pad_char. */ \
15, /* AR_max_namelen. */ \
0, /* match priority. */ \
+ TARGET_KEEP_UNUSED_SECTION_SYMBOLS, /* keep unused section symbols. */ \
\
/* Data conversion functions. */ \
bfd_getb64, bfd_getb_signed_64, bfd_putb64, \
'/', /* AR_pad_char. */ \
15, /* AR_max_namelen. */ \
0, /* match priority. */ \
+ TARGET_KEEP_UNUSED_SECTION_SYMBOLS, /* keep unused section symbols. */ \
\
/* Data conversion functions. */ \
bfd_getb64, bfd_getb_signed_64, bfd_putb64, \
'/', /* AR_pad_char. */ \
15, /* AR_max_namelen. */ \
0, /* match priority. */ \
+ TARGET_KEEP_UNUSED_SECTION_SYMBOLS, /* keep unused section symbols. */ \
\
/* Data conversion functions. */ \
bfd_getl64, bfd_getl_signed_64, bfd_putl64, \
projects / binutils-gdb.git / blobdiff