/* BFD back-end for Intel 960 b.out binaries.
Copyright 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
- 2000
+ 2000, 2001
Free Software Foundation, Inc.
Written by Cygnus Support.
#include "bout.h"
#include "aout/stab_gnu.h"
-#include "libaout.h" /* BFD a.out internal data structures */
-
-static int aligncode PARAMS ((bfd *abfd, asection *input_section,
- arelent *r, unsigned int shrink));
-static void perform_slip PARAMS ((bfd *abfd, unsigned int slip,
- asection *input_section, bfd_vma value));
-static boolean b_out_squirt_out_relocs PARAMS ((bfd *abfd, asection *section));
-static const bfd_target *b_out_callback PARAMS ((bfd *));
-static bfd_reloc_status_type calljx_callback
- PARAMS ((bfd *, struct bfd_link_info *, arelent *, PTR src, PTR dst,
- asection *));
-static bfd_reloc_status_type callj_callback
- PARAMS ((bfd *, struct bfd_link_info *, arelent *, PTR data,
- unsigned int srcidx, unsigned int dstidx, asection *, boolean));
-static bfd_vma get_value PARAMS ((arelent *, struct bfd_link_info *,
- asection *));
-static int abs32code PARAMS ((bfd *, asection *, arelent *,
- unsigned int, struct bfd_link_info *));
-static boolean b_out_bfd_relax_section PARAMS ((bfd *, asection *,
- struct bfd_link_info *,
- boolean *));
-static bfd_byte *b_out_bfd_get_relocated_section_contents
- PARAMS ((bfd *, struct bfd_link_info *, struct bfd_link_order *,
- bfd_byte *, boolean, asymbol **));
+#include "libaout.h" /* BFD a.out internal data structures. */
+
+static int aligncode PARAMS ((bfd *abfd, asection *input_section, arelent *r, unsigned int shrink));
+static void perform_slip PARAMS ((bfd *abfd, unsigned int slip, asection *input_section, bfd_vma value));
+static boolean b_out_squirt_out_relocs PARAMS ((bfd *abfd, asection *section));
+static const bfd_target * b_out_callback PARAMS ((bfd *));
+static bfd_reloc_status_type calljx_callback PARAMS ((bfd *, struct bfd_link_info *, arelent *, PTR src, PTR dst, asection *));
+static bfd_reloc_status_type callj_callback PARAMS ((bfd *, struct bfd_link_info *, arelent *, PTR data, unsigned int srcidx, unsigned int dstidx, asection *, boolean));
+static bfd_vma get_value PARAMS ((arelent *, struct bfd_link_info *, asection *));
+static int abs32code PARAMS ((bfd *, asection *, arelent *, unsigned int, struct bfd_link_info *));
+static boolean b_out_bfd_relax_section PARAMS ((bfd *, asection *, struct bfd_link_info *, boolean *));
+static bfd_byte * b_out_bfd_get_relocated_section_contents PARAMS ((bfd *, struct bfd_link_info *, struct bfd_link_order *, bfd_byte *, boolean, asymbol **));
+static int b_out_sizeof_headers PARAMS ((bfd *, boolean));
+static boolean b_out_set_arch_mach PARAMS ((bfd *, enum bfd_architecture, unsigned long));
+static boolean b_out_set_section_contents PARAMS ((bfd *, asection *, PTR, file_ptr, bfd_size_type));
+static long b_out_get_reloc_upper_bound PARAMS ((bfd *, sec_ptr));
+static long b_out_canonicalize_reloc PARAMS ((bfd *, sec_ptr, arelent **, asymbol **));
+static boolean b_out_slurp_reloc_table PARAMS ((bfd *, sec_ptr, asymbol **));
+static reloc_howto_type * b_out_bfd_reloc_type_lookup PARAMS ((bfd *, bfd_reloc_code_real_type));
+static boolean b_out_write_object_contents PARAMS ((bfd *));
+static int b_out_symbol_cmp PARAMS ((const void *, const void *));
+static boolean b_out_mkobject PARAMS ((bfd *));
+static const bfd_target * b_out_object_p PARAMS ((bfd *));
+
+void bout_swap_exec_header_in PARAMS ((bfd *, struct external_exec *, struct internal_exec *));
+void bout_swap_exec_header_out PARAMS ((bfd *, struct internal_exec *, struct external_exec *));
/* Swaps the information in an executable header taken from a raw byte
stream memory image, into the internal exec_header structure. */
/* Swaps the information in an internal exec header structure into the
supplied buffer ready for writing to disk. */
-PROTO(void, bout_swap_exec_header_out,
- (bfd *abfd,
- struct internal_exec *execp,
- struct external_exec *raw_bytes));
void
bout_swap_exec_header_out (abfd, execp, raw_bytes)
bfd *abfd;
struct external_exec exec_bytes;
if (bfd_read ((PTR) &exec_bytes, 1, EXEC_BYTES_SIZE, abfd)
- != EXEC_BYTES_SIZE) {
- if (bfd_get_error () != bfd_error_system_call)
- bfd_set_error (bfd_error_wrong_format);
- return 0;
- }
+ != EXEC_BYTES_SIZE)
+ {
+ if (bfd_get_error () != bfd_error_system_call)
+ bfd_set_error (bfd_error_wrong_format);
+ return 0;
+ }
anexec.a_info = bfd_h_get_32 (abfd, exec_bytes.e_info);
- if (N_BADMAG (anexec)) {
- bfd_set_error (bfd_error_wrong_format);
- return 0;
- }
+ if (N_BADMAG (anexec))
+ {
+ bfd_set_error (bfd_error_wrong_format);
+ return 0;
+ }
bout_swap_exec_header_in (abfd, &exec_bytes, &anexec);
return aout_32_some_aout_object_p (abfd, &anexec, b_out_callback);
struct internal_exec *execp = exec_hdr (abfd);
unsigned long bss_start;
- /* Architecture and machine type */
+ /* Architecture and machine type. */
bfd_set_arch_mach(abfd,
bfd_arch_i960, /* B.out only used on i960 */
bfd_mach_i960_core /* Default */
obj_str_filepos (abfd) = N_STROFF (*execp);
obj_sym_filepos (abfd) = N_SYMOFF (*execp);
- /* The alignments of the sections */
+ /* The alignments of the sections. */
obj_textsec (abfd)->alignment_power = execp->a_talign;
obj_datasec (abfd)->alignment_power = execp->a_dalign;
obj_bsssec (abfd)->alignment_power = execp->a_balign;
obj_textsec (abfd)->lma = obj_textsec (abfd)->vma;
obj_datasec (abfd)->lma = obj_datasec (abfd)->vma;
- /* And reload the sizes, since the aout module zaps them */
+ /* And reload the sizes, since the aout module zaps them. */
obj_textsec (abfd)->_raw_size = execp->a_text;
bss_start = execp->a_dload + execp->a_data; /* BSS = end of data section */
obj_bsssec (abfd)->lma = obj_bsssec (abfd)->vma;
- /* The file positions of the sections */
+ /* The file positions of the sections. */
obj_textsec (abfd)->filepos = N_TXTOFF(*execp);
obj_datasec (abfd)->filepos = N_DATOFF(*execp);
- /* The file positions of the relocation info */
+ /* The file positions of the relocation info. */
obj_textsec (abfd)->rel_filepos = N_TROFF(*execp);
obj_datasec (abfd)->rel_filepos = N_DROFF(*execp);
return abfd->xvec;
}
-struct bout_data_struct {
+struct bout_data_struct
+ {
struct aoutdata a;
struct internal_exec e;
-};
+ };
static boolean
b_out_mkobject (abfd)
}
static int
-b_out_symbol_cmp (a, b)
- struct aout_symbol **a, **b;
+b_out_symbol_cmp (a_ptr, b_ptr)
+ const void * a_ptr;
+ const void * b_ptr;
{
+ struct aout_symbol ** a = (struct aout_symbol **) a_ptr;
+ struct aout_symbol ** b = (struct aout_symbol **) b_ptr;
asection *sec;
bfd_vma av, bv;
- /* Primary key is address */
+ /* Primary key is address. */
sec = bfd_get_section (&(*a)->symbol);
av = sec->output_section->vma + sec->output_offset + (*a)->symbol.value;
sec = bfd_get_section (&(*b)->symbol);
qsort (outsyms, q - outsyms, sizeof (asymbol*), b_out_symbol_cmp);
/* Back to your regularly scheduled program. */
-
if (bfd_seek (abfd, (file_ptr) (N_SYMOFF(*exec_hdr(abfd))), SEEK_SET)
!= 0)
return false;
return true;
}
\f
-/** Some reloc hackery */
+/* Some reloc hackery. */
#define CALLS 0x66003800 /* Template for 'calls' instruction */
-#define BAL 0x0b000000 /* Template for 'bal' instruction */
+#define BAL 0x0b000000 /* Template for 'bal' instruction */
#define BAL_MASK 0x00ffffff
#define BALX 0x85f00000 /* Template for 'balx' instruction */
#define BALX_MASK 0x0007ffff
#define output_addr(sec) ((sec)->output_offset+(sec)->output_section->vma)
-/* Magic to turn callx into calljx */
+/* Magic to turn callx into calljx. */
+
static bfd_reloc_status_type
calljx_callback (abfd, link_info, reloc_entry, src, dst, input_section)
bfd *abfd;
{
aout_symbol_type *balsym = symbol+1;
int inst = bfd_get_32 (abfd, (bfd_byte *) src-4);
- /* The next symbol should be an N_BALNAME */
+ /* The next symbol should be an N_BALNAME. */
BFD_ASSERT (IS_BALNAME (balsym->other));
inst &= BALX_MASK;
inst |= BALX;
return bfd_reloc_ok;
}
-/* Magic to turn call into callj */
+/* Magic to turn call into callj. */
+
static bfd_reloc_status_type
callj_callback (abfd, link_info, reloc_entry, data, srcidx, dstidx,
input_section, shrinking)
}
}
-/* Allocate enough room for all the reloc entries, plus pointers to them all */
+/* Allocate enough room for all the reloc entries, plus pointers to them all. */
static boolean
b_out_slurp_reloc_table (abfd, asect, symbols)
if (asect->relocation)
return true;
+
if (!aout_32_slurp_symbol_table (abfd))
return false;
- if (asect == obj_datasec (abfd)) {
- reloc_size = exec_hdr(abfd)->a_drsize;
- goto doit;
- }
+ if (asect == obj_datasec (abfd))
+ {
+ reloc_size = exec_hdr(abfd)->a_drsize;
+ goto doit;
+ }
- if (asect == obj_textsec (abfd)) {
- reloc_size = exec_hdr(abfd)->a_trsize;
- goto doit;
- }
+ if (asect == obj_textsec (abfd))
+ {
+ reloc_size = exec_hdr(abfd)->a_trsize;
+ goto doit;
+ }
- if (asect == obj_bsssec (abfd)) {
- reloc_size = 0;
- goto doit;
- }
+ if (asect == obj_bsssec (abfd))
+ {
+ reloc_size = 0;
+ goto doit;
+ }
bfd_set_error (bfd_error_invalid_operation);
return false;
relocs = (struct relocation_info *) bfd_malloc (reloc_size);
if (!relocs && reloc_size != 0)
return false;
+
reloc_cache = (arelent *) bfd_malloc ((count+1) * sizeof (arelent));
- if (!reloc_cache) {
- if (relocs != NULL)
- free ((char*)relocs);
- return false;
- }
+ if (!reloc_cache)
+ {
+ if (relocs != NULL)
+ free ((char*)relocs);
+ return false;
+ }
- if (bfd_read ((PTR) relocs, 1, reloc_size, abfd) != reloc_size) {
- free (reloc_cache);
- if (relocs != NULL)
- free (relocs);
- return false;
- }
+ if (bfd_read ((PTR) relocs, 1, reloc_size, abfd) != reloc_size)
+ {
+ free (reloc_cache);
+ if (relocs != NULL)
+ free (relocs);
+ return false;
+ }
- if (bfd_header_big_endian (abfd)) {
- /* big-endian bit field allocation order */
- pcrel_mask = 0x80;
- extern_mask = 0x10;
- incode_mask = 0x08;
- callj_mask = 0x02;
- size_mask = 0x20;
- length_shift = 5;
- } else {
- /* little-endian bit field allocation order */
- pcrel_mask = 0x01;
- extern_mask = 0x08;
- incode_mask = 0x10;
- callj_mask = 0x40;
- size_mask = 0x02;
- length_shift = 1;
- }
+ if (bfd_header_big_endian (abfd))
+ {
+ /* Big-endian bit field allocation order. */
+ pcrel_mask = 0x80;
+ extern_mask = 0x10;
+ incode_mask = 0x08;
+ callj_mask = 0x02;
+ size_mask = 0x20;
+ length_shift = 5;
+ }
+ else
+ {
+ /* Little-endian bit field allocation order. */
+ pcrel_mask = 0x01;
+ extern_mask = 0x08;
+ incode_mask = 0x10;
+ callj_mask = 0x40;
+ size_mask = 0x02;
+ length_shift = 1;
+ }
for (rptr = relocs, cache_ptr = reloc_cache, counter = 0;
counter < count;
{
unsigned char *raw = (unsigned char *)rptr;
unsigned int symnum;
+
cache_ptr->address = bfd_h_get_32 (abfd, raw + 0);
cache_ptr->howto = 0;
+
if (bfd_header_big_endian (abfd))
- {
symnum = (raw[4] << 16) | (raw[5] << 8) | raw[6];
- }
else
- {
symnum = (raw[6] << 16) | (raw[5] << 8) | raw[4];
- }
if (raw[7] & extern_mask)
- {
- /* if this is set then the r_index is a index into the symbol table;
- * if the bit is not set then r_index contains a section map.
- * we either fill in the sym entry with a pointer to the symbol,
- * or point to the correct section
- */
+ {
+ /* If this is set then the r_index is a index into the symbol table;
+ if the bit is not set then r_index contains a section map.
+ We either fill in the sym entry with a pointer to the symbol,
+ or point to the correct section. */
cache_ptr->sym_ptr_ptr = symbols + symnum;
cache_ptr->addend = 0;
- } else
- {
- /* in a.out symbols are relative to the beginning of the
- * file rather than sections ?
- * (look in translate_from_native_sym_flags)
- * the reloc entry addend has added to it the offset into the
- * file of the data, so subtract the base to make the reloc
- * section relative */
- int s;
+ }
+ else
{
- /* sign-extend symnum from 24 bits to whatever host uses */
+ /* In a.out symbols are relative to the beginning of the
+ file rather than sections ?
+ (look in translate_from_native_sym_flags)
+ The reloc entry addend has added to it the offset into the
+ file of the data, so subtract the base to make the reloc
+ section relative. */
+ int s;
+
+ /* Sign-extend symnum from 24 bits to whatever host uses. */
s = symnum;
if (s & (1 << 23))
s |= (~0) << 24;
- }
- cache_ptr->sym_ptr_ptr = (asymbol **)NULL;
- switch (s)
- {
- case N_TEXT:
- case N_TEXT | N_EXT:
- cache_ptr->sym_ptr_ptr = obj_textsec(abfd)->symbol_ptr_ptr;
- cache_ptr->addend = - obj_textsec(abfd)->vma;
- break;
- case N_DATA:
- case N_DATA | N_EXT:
- cache_ptr->sym_ptr_ptr = obj_datasec(abfd)->symbol_ptr_ptr;
- cache_ptr->addend = - obj_datasec(abfd)->vma;
- break;
- case N_BSS:
- case N_BSS | N_EXT:
- cache_ptr->sym_ptr_ptr = obj_bsssec(abfd)->symbol_ptr_ptr;
- cache_ptr->addend = - obj_bsssec(abfd)->vma;
- break;
- case N_ABS:
- case N_ABS | N_EXT:
- cache_ptr->sym_ptr_ptr = obj_bsssec(abfd)->symbol_ptr_ptr;
- cache_ptr->addend = 0;
- break;
- case -2: /* .align */
- if (raw[7] & pcrel_mask)
- {
- cache_ptr->howto = &howto_align_table[(raw[7] >> length_shift) & 3];
- cache_ptr->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr;
- }
- else
+
+ cache_ptr->sym_ptr_ptr = (asymbol **)NULL;
+ switch (s)
{
- /* .org? */
- abort ();
+ case N_TEXT:
+ case N_TEXT | N_EXT:
+ cache_ptr->sym_ptr_ptr = obj_textsec (abfd)->symbol_ptr_ptr;
+ cache_ptr->addend = - obj_textsec (abfd)->vma;
+ break;
+ case N_DATA:
+ case N_DATA | N_EXT:
+ cache_ptr->sym_ptr_ptr = obj_datasec (abfd)->symbol_ptr_ptr;
+ cache_ptr->addend = - obj_datasec (abfd)->vma;
+ break;
+ case N_BSS:
+ case N_BSS | N_EXT:
+ cache_ptr->sym_ptr_ptr = obj_bsssec (abfd)->symbol_ptr_ptr;
+ cache_ptr->addend = - obj_bsssec (abfd)->vma;
+ break;
+ case N_ABS:
+ case N_ABS | N_EXT:
+ cache_ptr->sym_ptr_ptr = obj_bsssec (abfd)->symbol_ptr_ptr;
+ cache_ptr->addend = 0;
+ break;
+ case -2: /* .align */
+ if (raw[7] & pcrel_mask)
+ {
+ cache_ptr->howto = &howto_align_table[(raw[7] >> length_shift) & 3];
+ cache_ptr->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr;
+ }
+ else
+ {
+ /* .org? */
+ abort ();
+ }
+ cache_ptr->addend = 0;
+ break;
+ default:
+ BFD_ASSERT(0);
+ break;
}
- cache_ptr->addend = 0;
- break;
- default:
- BFD_ASSERT(0);
- break;
}
- }
-
- /* the i960 only has a few relocation types:
+ /* The i960 only has a few relocation types:
abs 32-bit and pcrel 24bit. except for callj's! */
if (cache_ptr->howto != 0)
;
else if (raw[7] & callj_mask)
- {
- cache_ptr->howto = &howto_reloc_callj;
- }
+ {
+ cache_ptr->howto = &howto_reloc_callj;
+ }
else if ( raw[7] & pcrel_mask)
- {
- if (raw[7] & size_mask)
- cache_ptr->howto = &howto_reloc_pcrel13;
- else
- cache_ptr->howto = &howto_reloc_pcrel24;
- }
- else
- {
- if (raw[7] & incode_mask)
{
- cache_ptr->howto = &howto_reloc_abs32code;
+ if (raw[7] & size_mask)
+ cache_ptr->howto = &howto_reloc_pcrel13;
+ else
+ cache_ptr->howto = &howto_reloc_pcrel24;
}
- else
+ else
{
- cache_ptr->howto = &howto_reloc_abs32;
+ if (raw[7] & incode_mask)
+ cache_ptr->howto = &howto_reloc_abs32code;
+ else
+ cache_ptr->howto = &howto_reloc_abs32;
}
- }
+
if (cache_ptr->address < prev_addr)
- {
- /* Ouch! this reloc is out of order, insert into the right place
- */
- arelent tmp;
- arelent *cursor = cache_ptr-1;
- bfd_vma stop = cache_ptr->address;
- tmp = *cache_ptr;
- while (cursor->address > stop && cursor >= reloc_cache)
{
- cursor[1] = cursor[0];
- cursor--;
+ /* Ouch! this reloc is out of order, insert into the right place. */
+ arelent tmp;
+ arelent *cursor = cache_ptr-1;
+ bfd_vma stop = cache_ptr->address;
+
+ tmp = *cache_ptr;
+ while (cursor->address > stop && cursor >= reloc_cache)
+ {
+ cursor[1] = cursor[0];
+ cursor--;
+ }
+
+ cursor[1] = tmp;
}
- cursor[1] = tmp;
- }
else
- {
- prev_addr = cache_ptr->address;
- }
+ {
+ prev_addr = cache_ptr->address;
+ }
}
if (relocs != NULL)
struct relocation_info *native, *natptr;
size_t natsize = count * sizeof (struct relocation_info);
int extern_mask, pcrel_mask, len_2, callj_mask;
- if (count == 0) return true;
+
+ if (count == 0)
+ return true;
+
generic = section->orelocation;
native = ((struct relocation_info *) bfd_malloc (natsize));
if (!native && natsize != 0)
return false;
if (bfd_header_big_endian (abfd))
- {
- /* Big-endian bit field allocation order */
- pcrel_mask = 0x80;
- extern_mask = 0x10;
- len_2 = 0x40;
- len_1 = 0x20;
- callj_mask = 0x02;
- incode_mask = 0x08;
- }
- else
- {
- /* Little-endian bit field allocation order */
- pcrel_mask = 0x01;
- extern_mask = 0x08;
- len_2 = 0x04;
- len_1 = 0x02;
- callj_mask = 0x40;
- incode_mask = 0x10;
- }
-
- for (natptr = native; count > 0; --count, ++natptr, ++generic)
- {
- arelent *g = *generic;
- unsigned char *raw = (unsigned char *)natptr;
- asymbol *sym = *(g->sym_ptr_ptr);
-
- asection *output_section = sym->section->output_section;
-
- bfd_h_put_32(abfd, g->address, raw);
- /* Find a type in the output format which matches the input howto -
- * at the moment we assume input format == output format FIXME!!
- */
- r_idx = 0;
- /* FIXME: Need callj stuff here, and to check the howto entries to
- be sure they are real for this architecture. */
- if (g->howto== &howto_reloc_callj)
- {
- raw[7] = callj_mask + pcrel_mask + len_2;
- }
- else if (g->howto == &howto_reloc_pcrel24)
- {
- raw[7] = pcrel_mask + len_2;
- }
- else if (g->howto == &howto_reloc_pcrel13)
{
- raw[7] = pcrel_mask + len_1;
+ /* Big-endian bit field allocation order. */
+ pcrel_mask = 0x80;
+ extern_mask = 0x10;
+ len_2 = 0x40;
+ len_1 = 0x20;
+ callj_mask = 0x02;
+ incode_mask = 0x08;
}
- else if (g->howto == &howto_reloc_abs32code)
+ else
{
- raw[7] = len_2 + incode_mask;
- }
- else if (g->howto >= howto_align_table
- && g->howto <= (howto_align_table
- + sizeof (howto_align_table) / sizeof (howto_align_table[0])
- - 1))
- {
- /* symnum == -2; extern_mask not set, pcrel_mask set */
- r_idx = -2;
- r_extern = 0;
- raw[7] = (pcrel_mask
- | ((g->howto - howto_align_table) << 1));
- }
- else {
- raw[7] = len_2;
+ /* Little-endian bit field allocation order. */
+ pcrel_mask = 0x01;
+ extern_mask = 0x08;
+ len_2 = 0x04;
+ len_1 = 0x02;
+ callj_mask = 0x40;
+ incode_mask = 0x10;
}
- if (r_idx != 0)
- /* already mucked with r_extern, r_idx */;
- else if (bfd_is_com_section (output_section)
- || bfd_is_abs_section (output_section)
- || bfd_is_und_section (output_section))
+ for (natptr = native; count > 0; --count, ++natptr, ++generic)
{
+ arelent *g = *generic;
+ unsigned char *raw = (unsigned char *)natptr;
+ asymbol *sym = *(g->sym_ptr_ptr);
+ asection *output_section = sym->section->output_section;
+
+ bfd_h_put_32(abfd, g->address, raw);
+ /* Find a type in the output format which matches the input howto -
+ at the moment we assume input format == output format FIXME!! */
+ r_idx = 0;
+ /* FIXME: Need callj stuff here, and to check the howto entries to
+ be sure they are real for this architecture. */
+ if (g->howto== &howto_reloc_callj)
+ raw[7] = callj_mask + pcrel_mask + len_2;
+ else if (g->howto == &howto_reloc_pcrel24)
+ raw[7] = pcrel_mask + len_2;
+ else if (g->howto == &howto_reloc_pcrel13)
+ raw[7] = pcrel_mask + len_1;
+ else if (g->howto == &howto_reloc_abs32code)
+ raw[7] = len_2 + incode_mask;
+ else if (g->howto >= howto_align_table
+ && g->howto <= (howto_align_table
+ + sizeof (howto_align_table) / sizeof (howto_align_table[0])
+ - 1))
+ {
+ /* symnum == -2; extern_mask not set, pcrel_mask set. */
+ r_idx = -2;
+ r_extern = 0;
+ raw[7] = (pcrel_mask
+ | ((g->howto - howto_align_table) << 1));
+ }
+ else
+ raw[7] = len_2;
- if (bfd_abs_section_ptr->symbol == sym)
- {
- /* Whoops, looked like an abs symbol, but is really an offset
- from the abs section */
- r_idx = 0;
- r_extern = 0;
- }
+ if (r_idx != 0)
+ /* Already mucked with r_extern, r_idx. */;
+ else if (bfd_is_com_section (output_section)
+ || bfd_is_abs_section (output_section)
+ || bfd_is_und_section (output_section))
+ {
+ if (bfd_abs_section_ptr->symbol == sym)
+ {
+ /* Whoops, looked like an abs symbol, but is really an offset
+ from the abs section. */
+ r_idx = 0;
+ r_extern = 0;
+ }
+ else
+ {
+ /* Fill in symbol. */
+ r_extern = 1;
+ r_idx = (*g->sym_ptr_ptr)->udata.i;
+ }
+ }
else
- {
- /* Fill in symbol */
+ {
+ /* Just an ordinary section. */
+ r_extern = 0;
+ r_idx = output_section->target_index;
+ }
- r_extern = 1;
- r_idx = (*g->sym_ptr_ptr)->udata.i;
- }
- }
- else
- {
- /* Just an ordinary section */
- r_extern = 0;
- r_idx = output_section->target_index;
+ if (bfd_header_big_endian (abfd))
+ {
+ raw[4] = (unsigned char) (r_idx >> 16);
+ raw[5] = (unsigned char) (r_idx >> 8);
+ raw[6] = (unsigned char) (r_idx );
+ }
+ else
+ {
+ raw[6] = (unsigned char) (r_idx >> 16);
+ raw[5] = (unsigned char) (r_idx>> 8);
+ raw[4] = (unsigned char) (r_idx );
+ }
+
+ if (r_extern)
+ raw[7] |= extern_mask;
}
- if (bfd_header_big_endian (abfd)) {
- raw[4] = (unsigned char) (r_idx >> 16);
- raw[5] = (unsigned char) (r_idx >> 8);
- raw[6] = (unsigned char) (r_idx );
- } else {
- raw[6] = (unsigned char) (r_idx >> 16);
- raw[5] = (unsigned char) (r_idx>> 8);
- raw[4] = (unsigned char) (r_idx );
+ if (bfd_write ((PTR) native, 1, natsize, abfd) != natsize)
+ {
+ free ((PTR)native);
+ return false;
}
- if (r_extern)
- raw[7] |= extern_mask;
- }
- if (bfd_write ((PTR) native, 1, natsize, abfd) != natsize) {
- free((PTR)native);
- return false;
- }
free ((PTR)native);
return true;
}
-/* This is stupid. This function should be a boolean predicate */
+/* This is stupid. This function should be a boolean predicate. */
+
static long
b_out_canonicalize_reloc (abfd, section, relptr, symbols)
bfd *abfd;
if ((section->flags & SEC_CONSTRUCTOR) != 0)
{
arelent_chain *chain = section->constructor_chain;
+
for (count = 0; count < section->reloc_count; count++)
{
*relptr++ = &chain->relent;
bfd *abfd;
sec_ptr asect;
{
- if (bfd_get_format (abfd) != bfd_object) {
- bfd_set_error (bfd_error_invalid_operation);
- return -1;
- }
+ if (bfd_get_format (abfd) != bfd_object)
+ {
+ bfd_set_error (bfd_error_invalid_operation);
+ return -1;
+ }
if (asect->flags & SEC_CONSTRUCTOR)
return sizeof (arelent *) * (asect->reloc_count + 1);
bfd_set_error (bfd_error_invalid_operation);
return -1;
}
+
\f
static boolean
b_out_set_section_contents (abfd, section, location, offset, count)
file_ptr offset;
bfd_size_type count;
{
+ if (abfd->output_has_begun == false)
+ {
+ /* Set by bfd.c handler. */
+ if (! aout_32_make_sections (abfd))
+ return false;
- if (abfd->output_has_begun == false) { /* set by bfd.c handler */
- if (! aout_32_make_sections (abfd))
- return false;
-
- obj_textsec (abfd)->filepos = sizeof (struct internal_exec);
- obj_datasec(abfd)->filepos = obj_textsec(abfd)->filepos
- + obj_textsec (abfd)->_raw_size;
+ obj_textsec (abfd)->filepos = sizeof (struct internal_exec);
+ obj_datasec(abfd)->filepos = obj_textsec(abfd)->filepos
+ + obj_textsec (abfd)->_raw_size;
+ }
- }
- /* regardless, once we know what we're doing, we might as well get going */
+ /* Regardless, once we know what we're doing, we might as well get going. */
if (bfd_seek (abfd, section->filepos + offset, SEEK_SET) != 0)
return false;
- if (count != 0) {
- return (bfd_write ((PTR)location, 1, count, abfd) == count) ?true:false;
- }
+ if (count != 0)
+ return (bfd_write ((PTR)location, 1, count, abfd) == count) ? true : false;
+
return true;
}
{
bfd_default_set_arch_mach(abfd, arch, machine);
- if (arch == bfd_arch_unknown) /* Unknown machine arch is OK */
+ if (arch == bfd_arch_unknown) /* Unknown machine arch is OK. */
return true;
- if (arch == bfd_arch_i960) /* i960 default is OK */
- switch (machine) {
- case bfd_mach_i960_core:
- case bfd_mach_i960_kb_sb:
- case bfd_mach_i960_mc:
- case bfd_mach_i960_xa:
- case bfd_mach_i960_ca:
- case bfd_mach_i960_ka_sa:
- case bfd_mach_i960_jx:
- case bfd_mach_i960_hx:
- case 0:
- return true;
- default:
- return false;
- }
+
+ if (arch == bfd_arch_i960) /* i960 default is OK. */
+ switch (machine)
+ {
+ case bfd_mach_i960_core:
+ case bfd_mach_i960_kb_sb:
+ case bfd_mach_i960_mc:
+ case bfd_mach_i960_xa:
+ case bfd_mach_i960_ca:
+ case bfd_mach_i960_ka_sa:
+ case bfd_mach_i960_jx:
+ case bfd_mach_i960_hx:
+ case 0:
+ return true;
+ default:
+ return false;
+ }
return false;
}
{
return sizeof (struct internal_exec);
}
+\f
-/************************************************************************/
static bfd_vma
get_value (reloc, link_info, input_section)
arelent *reloc;
/* A symbol holds a pointer to a section, and an offset from the
base of the section. To relocate, we find where the section will
- live in the output and add that in */
-
+ live in the output and add that in. */
if (bfd_is_und_section (symbol->section))
{
struct bfd_link_hash_entry *h;
value = symbol->value + output_addr (symbol->section);
}
- /* Add the value contained in the relocation */
+ /* Add the value contained in the relocation. */
value += reloc->addend;
return value;
BFD_ASSERT (s != (asymbol **) NULL);
/* Find all symbols past this point, and make them know
- what's happened */
+ what's happened. */
while (*s)
- {
- asymbol *p = *s;
- if (p->section == input_section)
{
- /* This was pointing into this section, so mangle it */
- if (p->value > value)
- {
- p->value -=slip;
- if (p->udata.p != NULL)
- {
- struct generic_link_hash_entry *h;
+ asymbol *p = *s;
- h = (struct generic_link_hash_entry *) p->udata.p;
- BFD_ASSERT (h->root.type == bfd_link_hash_defined);
- h->root.u.def.value -= slip;
- BFD_ASSERT (h->root.u.def.value == p->value);
- }
- }
- }
- s++;
+ if (p->section == input_section)
+ {
+ /* This was pointing into this section, so mangle it. */
+ if (p->value > value)
+ {
+ p->value -=slip;
- }
+ if (p->udata.p != NULL)
+ {
+ struct generic_link_hash_entry *h;
+
+ h = (struct generic_link_hash_entry *) p->udata.p;
+ BFD_ASSERT (h->root.type == bfd_link_hash_defined);
+ h->root.u.def.value -= slip;
+ BFD_ASSERT (h->root.u.def.value == p->value);
+ }
+ }
+ }
+ s++;
+ }
}
/* This routine works out if the thing we want to get to can be
reached with a 24bit offset instead of a 32 bit one.
- If it can, then it changes the amode */
+ If it can, then it changes the amode. */
static int
abs32code (abfd, input_section, r, shrink, link_info)
/* See if the address we're looking at within 2^23 bytes of where
we are, if so then we can use a small branch rather than the
- jump we were going to */
-
+ jump we were going to. */
gap = value - (dot - shrink);
- if (-1<<23 < (long)gap && (long)gap < 1<<23 )
- {
- /* Change the reloc type from 32bitcode possible 24, to 24bit
- possible 32 */
-
- r->howto = &howto_reloc_abs32codeshrunk;
- /* The place to relc moves back by four bytes */
- r->address -=4;
+ if (-1 << 23 < (long)gap && (long)gap < 1 << 23)
+ {
+ /* Change the reloc type from 32bitcode possible 24, to 24bit
+ possible 32. */
+ r->howto = &howto_reloc_abs32codeshrunk;
+ /* The place to relc moves back by four bytes. */
+ r->address -=4;
+
+ /* This will be four bytes smaller in the long run. */
+ shrink += 4 ;
+ perform_slip (abfd, 4, input_section, r->address-shrink + 4);
+ }
- /* This will be four bytes smaller in the long run */
- shrink += 4 ;
- perform_slip (abfd, 4, input_section, r->address-shrink + 4);
- }
return shrink;
}
smaller - the current size is already the same size as or bigger
than the alignment required. */
- /* calculate the first byte following the padding before we optimize */
+ /* Calculate the first byte following the padding before we optimize. */
old_end = ((dot + size ) & ~size) + size+1;
- /* work out where the new end will be - remember that we're smaller
- than we used to be */
+ /* Work out where the new end will be - remember that we're smaller
+ than we used to be. */
new_end = ((dot - shrink + size) & ~size);
- /* This is the new end */
+ /* This is the new end. */
gap = old_end - ((dot + size) & ~size);
shrink_delta = (old_end - new_end) - shrink;
if (shrink_delta)
- {
- /* Change the reloc so that it knows how far to align to */
- r->howto = howto_done_align_table + (r->howto - howto_align_table);
+ {
+ /* Change the reloc so that it knows how far to align to. */
+ r->howto = howto_done_align_table + (r->howto - howto_align_table);
- /* Encode the stuff into the addend - for future use we need to
- know how big the reloc used to be */
- r->addend = old_end - dot + r->address;
+ /* Encode the stuff into the addend - for future use we need to
+ know how big the reloc used to be. */
+ r->addend = old_end - dot + r->address;
+
+ /* This will be N bytes smaller in the long run, adjust all the symbols. */
+ perform_slip (abfd, shrink_delta, input_section, r->address - shrink);
+ shrink += shrink_delta;
+ }
- /* This will be N bytes smaller in the long run, adjust all the symbols */
- perform_slip (abfd, shrink_delta, input_section, r->address - shrink);
- shrink += shrink_delta;
- }
return shrink;
}
struct bfd_link_info *link_info;
boolean *again;
{
- /* Get enough memory to hold the stuff */
+ /* Get enough memory to hold the stuff. */
bfd *input_bfd = i->owner;
asection *input_section = i;
int shrink = 0 ;
if (reloc_vector == NULL && reloc_size != 0)
goto error_return;
- /* Get the relocs and think about them */
+ /* Get the relocs and think about them. */
reloc_count =
bfd_canonicalize_reloc (input_bfd, input_section, reloc_vector,
_bfd_generic_link_get_symbols (input_bfd));
if (reloc_count > 0)
{
arelent **parent;
+
for (parent = reloc_vector; *parent; parent++)
{
arelent *r = *parent;
+
switch (r->howto->type)
{
case ALIGNER:
- /* An alignment reloc */
+ /* An alignment reloc. */
shrink = aligncode (abfd, input_section, r, shrink);
break;
case ABS32CODE:
- /* A 32bit reloc in an addressing mode */
+ /* A 32bit reloc in an addressing mode. */
shrink = abs32code (input_bfd, input_section, r, shrink,
link_info);
break;
boolean relocateable;
asymbol **symbols;
{
- /* Get enough memory to hold the stuff */
+ /* Get enough memory to hold the stuff. */
bfd *input_bfd = link_order->u.indirect.section->owner;
asection *input_section = link_order->u.indirect.section;
long reloc_size = bfd_get_reloc_upper_bound (input_bfd,
input_section->reloc_done = 1;
- /* read in the section */
+ /* Read in the section. */
BFD_ASSERT (true == bfd_get_section_contents (input_bfd,
input_section,
data,
{
arelent **parent = reloc_vector;
arelent *reloc ;
-
unsigned int dst_address = 0;
unsigned int src_address = 0;
unsigned int run;
unsigned int idx;
- /* Find how long a run we can do */
+ /* Find how long a run we can do. */
while (dst_address < link_order->size)
{
reloc = *parent;
{
/* Note that the relaxing didn't tie up the addresses in the
relocation, so we use the original address to work out the
- run of non-relocated data */
+ run of non-relocated data. */
BFD_ASSERT (reloc->address >= src_address);
run = reloc->address - src_address;
parent++;
{
run = link_order->size - dst_address;
}
- /* Copy the bytes */
- for (idx = 0; idx < run; idx++)
- {
- data[dst_address++] = data[src_address++];
- }
- /* Now do the relocation */
+ /* Copy the bytes. */
+ for (idx = 0; idx < run; idx++)
+ data[dst_address++] = data[src_address++];
+ /* Now do the relocation. */
if (reloc)
{
switch (reloc->howto->type)
calljx_callback (input_bfd, link_info, reloc,
src_address + data, dst_address + data,
input_section);
- src_address+=4;
- dst_address+=4;
+ src_address += 4;
+ dst_address += 4;
break;
case ABS32:
bfd_put_32 (input_bfd,
(bfd_get_32 (input_bfd, data + src_address)
+ get_value (reloc, link_info, input_section)),
data + dst_address);
- src_address+=4;
- dst_address+=4;
+ src_address += 4;
+ dst_address += 4;
break;
case CALLJ:
callj_callback (input_bfd, link_info, reloc, data,
src_address, dst_address, input_section,
false);
- src_address+=4;
- dst_address+=4;
+ src_address += 4;
+ dst_address += 4;
break;
case ALIGNDONE:
BFD_ASSERT (reloc->addend >= src_address);
callj_callback (input_bfd, link_info, reloc, data,
src_address + 4, dst_address, input_section,
true);
- dst_address+=4;
- src_address+=8;
+ dst_address += 4;
+ src_address += 8;
break;
case PCREL24:
{
& BAL_MASK));
bfd_put_32 (input_bfd, word, data + dst_address);
- dst_address+=4;
- src_address+=4;
+ dst_address += 4;
+ src_address += 4;
}
break;
-
case PCREL13:
{
long int word = bfd_get_32 (input_bfd,
& PCREL13_MASK));
bfd_put_32 (input_bfd, word, data + dst_address);
- dst_address+=4;
- src_address+=4;
-
+ dst_address += 4;
+ src_address += 4;
}
break;
free (reloc_vector);
return NULL;
}
-/***********************************************************************/
+\f
/* Build the transfer vectors for Big and Little-Endian B.OUT files. */
/* BFD back-end for Motorola 68000 COFF binaries.
- Copyright 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1999, 2000
+ Copyright 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1999,
+ 2000, 2001
Free Software Foundation, Inc.
Written by Cygnus Support.
#endif
static boolean m68k_coff_is_local_label_name PARAMS ((bfd *, const char *));
+#ifdef STATIC_RELOCS
+static
+#endif
+reloc_howto_type * m68k_reloc_type_lookup PARAMS ((bfd *, bfd_reloc_code_real_type));
+#ifdef STATIC_RELOCS
+static
+#endif
+int m68k_howto2rtype PARAMS ((reloc_howto_type *));
+#ifdef STATIC_RELOCS
+static
+#endif
+void m68k_rtype2howto PARAMS ((arelent *, int));
/* On the delta, a symbol starting with L% is local. We won't see
such a symbol on other platforms, so it should be safe to always
static
#endif
reloc_howto_type m68kcoff_howto_table[] =
-{
- HOWTO(R_RELBYTE, 0, 0, 8, false, 0, complain_overflow_bitfield, RELOC_SPECIAL_FN, "8", true, 0x000000ff,0x000000ff, false),
- HOWTO(R_RELWORD, 0, 1, 16, false, 0, complain_overflow_bitfield, RELOC_SPECIAL_FN, "16", true, 0x0000ffff,0x0000ffff, false),
- HOWTO(R_RELLONG, 0, 2, 32, false, 0, complain_overflow_bitfield, RELOC_SPECIAL_FN, "32", true, 0xffffffff,0xffffffff, false),
- HOWTO(R_PCRBYTE, 0, 0, 8, true, 0, complain_overflow_signed, RELOC_SPECIAL_FN, "DISP8", true, 0x000000ff,0x000000ff, false),
- HOWTO(R_PCRWORD, 0, 1, 16, true, 0, complain_overflow_signed, RELOC_SPECIAL_FN, "DISP16", true, 0x0000ffff,0x0000ffff, false),
- HOWTO(R_PCRLONG, 0, 2, 32, true, 0, complain_overflow_signed, RELOC_SPECIAL_FN, "DISP32", true, 0xffffffff,0xffffffff, false),
- HOWTO(R_RELLONG_NEG, 0, -2, 32, false, 0, complain_overflow_bitfield, RELOC_SPECIAL_FN, "-32", true, 0xffffffff,0xffffffff, false),
-};
+ {
+ HOWTO (R_RELBYTE, 0, 0, 8, false, 0, complain_overflow_bitfield, RELOC_SPECIAL_FN, "8", true, 0x000000ff,0x000000ff, false),
+ HOWTO (R_RELWORD, 0, 1, 16, false, 0, complain_overflow_bitfield, RELOC_SPECIAL_FN, "16", true, 0x0000ffff,0x0000ffff, false),
+ HOWTO (R_RELLONG, 0, 2, 32, false, 0, complain_overflow_bitfield, RELOC_SPECIAL_FN, "32", true, 0xffffffff,0xffffffff, false),
+ HOWTO (R_PCRBYTE, 0, 0, 8, true, 0, complain_overflow_signed, RELOC_SPECIAL_FN, "DISP8", true, 0x000000ff,0x000000ff, false),
+ HOWTO (R_PCRWORD, 0, 1, 16, true, 0, complain_overflow_signed, RELOC_SPECIAL_FN, "DISP16", true, 0x0000ffff,0x0000ffff, false),
+ HOWTO (R_PCRLONG, 0, 2, 32, true, 0, complain_overflow_signed, RELOC_SPECIAL_FN, "DISP32", true, 0xffffffff,0xffffffff, false),
+ HOWTO (R_RELLONG_NEG, 0, -2, 32, false, 0, complain_overflow_bitfield, RELOC_SPECIAL_FN, "-32", true, 0xffffffff,0xffffffff, false),
+ };
#endif /* not ONLY_DECLARE_RELOCS */
#ifndef BADMAG
int relocentry;
{
switch (relocentry)
- {
- case R_RELBYTE: internal->howto = m68kcoff_howto_table + 0; break;
- case R_RELWORD: internal->howto = m68kcoff_howto_table + 1; break;
- case R_RELLONG: internal->howto = m68kcoff_howto_table + 2; break;
- case R_PCRBYTE: internal->howto = m68kcoff_howto_table + 3; break;
- case R_PCRWORD: internal->howto = m68kcoff_howto_table + 4; break;
- case R_PCRLONG: internal->howto = m68kcoff_howto_table + 5; break;
- case R_RELLONG_NEG: internal->howto = m68kcoff_howto_table + 6; break;
- }
+ {
+ case R_RELBYTE: internal->howto = m68kcoff_howto_table + 0; break;
+ case R_RELWORD: internal->howto = m68kcoff_howto_table + 1; break;
+ case R_RELLONG: internal->howto = m68kcoff_howto_table + 2; break;
+ case R_PCRBYTE: internal->howto = m68kcoff_howto_table + 3; break;
+ case R_PCRWORD: internal->howto = m68kcoff_howto_table + 4; break;
+ case R_PCRLONG: internal->howto = m68kcoff_howto_table + 5; break;
+ case R_RELLONG_NEG: internal->howto = m68kcoff_howto_table + 6; break;
+ }
}
#ifdef STATIC_RELOCS
reloc_howto_type *internal;
{
if (internal->pc_relative)
- {
- switch (internal->bitsize)
{
- case 32: return R_PCRLONG;
- case 16: return R_PCRWORD;
- case 8: return R_PCRBYTE;
+ switch (internal->bitsize)
+ {
+ case 32: return R_PCRLONG;
+ case 16: return R_PCRWORD;
+ case 8: return R_PCRBYTE;
+ }
}
- }
else
- {
- switch (internal->bitsize)
- {
- case 32: return R_RELLONG;
- case 16: return R_RELWORD;
- case 8: return R_RELBYTE;
- }
- }
+ {
+ switch (internal->bitsize)
+ {
+ case 32: return R_RELLONG;
+ case 16: return R_RELWORD;
+ case 8: return R_RELBYTE;
+ }
+ }
return R_RELLONG;
}
projects / binutils-gdb.git / commitdiff