/* ELF executable support for BFD.
- Copyright 1991, 1992, 1993 Free Software Foundation, Inc.
+ Copyright 1991, 1992, 1993, 1994 Free Software Foundation, Inc.
Written by Fred Fish @ Cygnus Support, from information published
in "UNIX System V Release 4, Programmers Guide: ANSI C and
symbols.
*/
-#include <assert.h>
#include <string.h> /* For strrchr and friends */
#include "bfd.h"
#include "sysdep.h"
#include "libbfd.h"
#include "libelf.h"
-#ifndef alloca
-PTR alloca ();
-#endif
-
/* 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_no_info_to_howto_rel NAME(bfd_elf,no_info_to_howto_rel)
#define elf_new_section_hook NAME(bfd_elf,new_section_hook)
#define write_relocs NAME(bfd_elf,_write_relocs)
+#define elf_find_section NAME(bfd_elf,find_section)
#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
+#define FILE_ALIGN 8
#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)
#define ELFCLASS ELFCLASS32
+#define FILE_ALIGN 4
#endif
static int shstrtab_length_fixed;
-struct elf_sect_data {
- int reloc_sec;
- /* more? */
-};
+struct elf_sect_data
+ {
+ int reloc_sec;
+ /* more? */
+ };
/* Forward declarations of static functions */
-static struct sec * section_from_elf_index PARAMS ((bfd *, int));
+static struct sec *section_from_elf_index PARAMS ((bfd *, unsigned int));
static int elf_section_from_bfd_section PARAMS ((bfd *, struct sec *));
static boolean elf_slurp_symbol_table PARAMS ((bfd *, asymbol **));
static int elf_symbol_from_bfd_symbol PARAMS ((bfd *,
- struct symbol_cache_entry **));
+ struct symbol_cache_entry **));
-static void elf_map_symbols PARAMS ((bfd *));
-static void swap_out_syms PARAMS ((bfd *));
+static boolean elf_map_symbols PARAMS ((bfd *));
+static boolean swap_out_syms PARAMS ((bfd *));
#ifdef DEBUG
static void elf_debug_section PARAMS ((char *, int, Elf_Internal_Shdr *));
#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
format. */
static void
-DEFUN (elf_swap_symbol_in, (abfd, src, dst),
- bfd * abfd AND
- Elf_External_Sym * src AND
- Elf_Internal_Sym * dst)
+elf_swap_symbol_in (abfd, src, dst)
+ bfd *abfd;
+ Elf_External_Sym *src;
+ Elf_Internal_Sym *dst;
{
dst->st_name = bfd_h_get_32 (abfd, (bfd_byte *) src->st_name);
dst->st_value = get_word (abfd, (bfd_byte *) src->st_value);
format. */
static void
-DEFUN (elf_swap_symbol_out, (abfd, src, dst),
- bfd * abfd AND
- Elf_Internal_Sym * src AND
- Elf_External_Sym * dst)
+elf_swap_symbol_out (abfd, src, dst)
+ bfd *abfd;
+ Elf_Internal_Sym *src;
+ Elf_External_Sym *dst;
{
bfd_h_put_32 (abfd, src->st_name, dst->st_name);
put_word (abfd, src->st_value, dst->st_value);
internal format. */
static void
-DEFUN (elf_swap_ehdr_in, (abfd, src, dst),
- bfd * abfd AND
- Elf_External_Ehdr * src AND
- Elf_Internal_Ehdr * dst)
+elf_swap_ehdr_in (abfd, src, dst)
+ bfd *abfd;
+ Elf_External_Ehdr *src;
+ Elf_Internal_Ehdr *dst;
{
memcpy (dst->e_ident, src->e_ident, EI_NIDENT);
dst->e_type = bfd_h_get_16 (abfd, (bfd_byte *) src->e_type);
external format. */
static void
-DEFUN (elf_swap_ehdr_out, (abfd, src, dst),
- bfd * abfd AND
- Elf_Internal_Ehdr * src AND
- Elf_External_Ehdr * dst)
+elf_swap_ehdr_out (abfd, src, dst)
+ bfd *abfd;
+ Elf_Internal_Ehdr *src;
+ Elf_External_Ehdr *dst;
{
memcpy (dst->e_ident, src->e_ident, EI_NIDENT);
/* note that all elements of dst are *arrays of unsigned char* already... */
ELF section header table entry in internal format. */
static void
-DEFUN (elf_swap_shdr_in, (abfd, src, dst),
- bfd * abfd AND
- Elf_External_Shdr * src AND
- Elf_Internal_Shdr * dst)
+elf_swap_shdr_in (abfd, src, dst)
+ bfd *abfd;
+ Elf_External_Shdr *src;
+ Elf_Internal_Shdr *dst;
{
dst->sh_name = bfd_h_get_32 (abfd, (bfd_byte *) src->sh_name);
dst->sh_type = bfd_h_get_32 (abfd, (bfd_byte *) src->sh_type);
ELF section header table entry in external format. */
static void
-DEFUN (elf_swap_shdr_out, (abfd, src, dst),
- bfd * abfd AND
- Elf_Internal_Shdr * src AND
- Elf_External_Shdr * dst)
+elf_swap_shdr_out (abfd, src, dst)
+ bfd *abfd;
+ Elf_Internal_Shdr *src;
+ Elf_External_Shdr *dst;
{
/* note that all elements of dst are *arrays of unsigned char* already... */
bfd_h_put_32 (abfd, src->sh_name, dst->sh_name);
ELF program header table entry in internal format. */
static void
-DEFUN (elf_swap_phdr_in, (abfd, src, dst),
- bfd * abfd AND
- Elf_External_Phdr * src AND
- Elf_Internal_Phdr * dst)
+elf_swap_phdr_in (abfd, src, dst)
+ bfd *abfd;
+ Elf_External_Phdr *src;
+ Elf_Internal_Phdr *dst;
{
dst->p_type = bfd_h_get_32 (abfd, (bfd_byte *) src->p_type);
dst->p_flags = bfd_h_get_32 (abfd, (bfd_byte *) src->p_flags);
}
static void
-DEFUN (elf_swap_phdr_out, (abfd, src, dst),
- bfd * abfd AND
- Elf_Internal_Phdr * src AND
- Elf_External_Phdr * dst)
+elf_swap_phdr_out (abfd, src, dst)
+ bfd *abfd;
+ Elf_Internal_Phdr *src;
+ Elf_External_Phdr *dst;
{
/* note that all elements of dst are *arrays of unsigned char* already... */
bfd_h_put_32 (abfd, src->p_type, dst->p_type);
/* Translate an ELF reloc from external format to internal format. */
static INLINE void
-DEFUN (elf_swap_reloc_in, (abfd, src, dst),
- bfd * abfd AND
- Elf_External_Rel * src AND
- Elf_Internal_Rel * dst)
+elf_swap_reloc_in (abfd, src, dst)
+ bfd *abfd;
+ Elf_External_Rel *src;
+ Elf_Internal_Rel *dst;
{
dst->r_offset = get_word (abfd, (bfd_byte *) src->r_offset);
dst->r_info = get_word (abfd, (bfd_byte *) src->r_info);
}
static INLINE void
-DEFUN (elf_swap_reloca_in, (abfd, src, dst),
- bfd * abfd AND
- Elf_External_Rela * src AND
- Elf_Internal_Rela * dst)
+elf_swap_reloca_in (abfd, src, dst)
+ bfd *abfd;
+ Elf_External_Rela *src;
+ Elf_Internal_Rela *dst;
{
dst->r_offset = get_word (abfd, (bfd_byte *) src->r_offset);
dst->r_info = get_word (abfd, (bfd_byte *) src->r_info);
/* Translate an ELF reloc from internal format to external format. */
static INLINE void
-DEFUN (elf_swap_reloc_out, (abfd, src, dst),
- bfd * abfd AND
- Elf_Internal_Rel * src AND
- Elf_External_Rel * dst)
+elf_swap_reloc_out (abfd, src, dst)
+ bfd *abfd;
+ Elf_Internal_Rel *src;
+ Elf_External_Rel *dst;
{
put_word (abfd, src->r_offset, dst->r_offset);
put_word (abfd, src->r_info, dst->r_info);
}
static INLINE void
-DEFUN (elf_swap_reloca_out, (abfd, src, dst),
- bfd * abfd AND
- Elf_Internal_Rela * src AND
- Elf_External_Rela * dst)
+elf_swap_reloca_out (abfd, src, dst)
+ bfd *abfd;
+ Elf_Internal_Rela *src;
+ Elf_External_Rela *dst;
{
put_word (abfd, src->r_offset, dst->r_offset);
put_word (abfd, src->r_info, dst->r_info);
put_word (abfd, src->r_addend, dst->r_addend);
}
-
\f
+
/* String table creation/manipulation routines */
static struct strtab *
-DEFUN (bfd_new_strtab, (abfd),
- bfd * abfd)
+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 = (struct strtab *) malloc (sizeof (struct strtab));
+ if (!ss)
+ {
+ bfd_set_error (bfd_error_no_memory);
+ return NULL;
+ }
+ ss->tab = malloc (1);
+ if (!ss->tab)
+ {
+ bfd_set_error (bfd_error_no_memory);
+ return NULL;
+ }
*ss->tab = 0;
ss->nentries = 0;
ss->length = 1;
}
static int
-DEFUN (bfd_add_to_strtab, (abfd, ss, str),
- bfd * abfd AND
- struct strtab *ss AND
- CONST char *str)
+bfd_add_to_strtab (abfd, ss, str)
+ bfd *abfd;
+ struct strtab *ss;
+ CONST char *str;
{
/* should search first, but for now: */
/* include the trailing NUL */
/* should this be using obstacks? */
ss->tab = realloc (ss->tab, ss->length + ln);
- BFD_ASSERT (ss->tab != 0);
+ BFD_ASSERT (ss->tab != 0); /* FIXME */
strcpy (ss->tab + ss->length, str);
ss->nentries++;
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)
+bfd_add_2_to_strtab (abfd, ss, str, str2)
+ bfd *abfd;
+ struct strtab *ss;
+ char *str;
+ CONST char *str2;
{
/* should search first, but for now: */
/* include the trailing NUL */
if (ss->length)
ss->tab = realloc (ss->tab, ss->length + ln);
else
- ss->tab = bfd_xmalloc (ln);
+ ss->tab = malloc (ln);
- BFD_ASSERT (ss->tab != 0);
+ BFD_ASSERT (ss->tab != 0); /* FIXME */
strcpy (ss->tab + ss->length, str);
strcpy (ss->tab + ss->length + strlen (str), str2);
ss->nentries++;
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)
+bfd_section_from_shdr (abfd, shindex)
+ bfd *abfd;
+ unsigned int shindex;
{
Elf_Internal_Shdr *hdr = elf_elfsections (abfd)[shindex];
Elf_Internal_Ehdr *ehdr = elf_elfheader (abfd);
return true;
case SHT_PROGBITS:
+ case SHT_DYNAMIC:
/* Bits that get saved. This one is real. */
if (!hdr->rawdata)
{
newsect = bfd_make_section (abfd, name);
if (newsect != NULL)
{
- newsect->filepos = hdr->sh_offset; /* so we can read back the bits */
+ 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->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 if (newsect->flags & SEC_ALLOC)
newsect->flags |= SEC_DATA;
+ /* The debugging sections appear to recognized only by
+ name. */
+ if (strncmp (name, ".debug", sizeof ".debug" - 1) == 0
+ || strncmp (name, ".line", sizeof ".line" - 1) == 0
+ || strncmp (name, ".stab", sizeof ".stab" - 1) == 0)
+ newsect->flags |= SEC_DEBUGGING;
+
hdr->rawdata = (void *) newsect;
}
else
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;
+ elf_tdata (abfd)->symtab_hdr = *hdr;
+ elf_elfsections (abfd)[shindex] = &elf_tdata (abfd)->symtab_hdr;
abfd->flags |= HAS_SYMS;
return true;
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;
+ 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;
+ unsigned int i;
for (i = 1; i < ehdr->e_shnum; i++)
{
- Elf_Internal_Shdr *hdr2 = elf_elfsections(abfd)[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;
+ 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 */
+#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)
hdr->rawdata = (PTR) newsect;
hdr2 = &elf_section_data (newsect)->str_hdr;
*hdr2 = *hdr;
- elf_elfsections(abfd)[shindex] = hdr2;
+ elf_elfsections (abfd)[shindex] = hdr2;
#endif
}
}
newsect->flags = SEC_HAS_CONTENTS;
hdr->rawdata = (PTR) newsect;
newsect->_raw_size = hdr->sh_size;
- newsect->alignment_power = 0;
- newsect->vma = 0;
+ newsect->alignment_power = bfd_log2 (hdr->sh_addralign);
+ newsect->vma = hdr->sh_addr;
+ newsect->filepos = hdr->sh_offset;
if (hdr->sh_flags & SHF_ALLOC)
- newsect->flags |= SEC_ALLOC|SEC_LOAD;
+ 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 if (newsect->flags & SEC_ALLOC)
newsect->flags |= SEC_DATA;
+
+ /* Check for debugging string tables. */
+ if (strncmp (name, ".debug", sizeof ".debug" - 1) == 0
+ || strncmp (name, ".stab", sizeof ".stab" - 1) == 0)
+ newsect->flags |= SEC_DEBUGGING;
}
return true;
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)
+ if (target_sect == NULL
+ || elf_section_data (target_sect) == NULL)
return false;
hdr2 = &elf_section_data (target_sect)->rel_hdr;
*hdr2 = *hdr;
- elf_elfsections(abfd)[shindex] = hdr2;
+ elf_elfsections (abfd)[shindex] = hdr2;
target_sect->reloc_count = hdr->sh_size / hdr->sh_entsize;
target_sect->flags |= SEC_RELOC;
target_sect->relocation = 0;
break;
case SHT_HASH:
- case SHT_DYNAMIC:
case SHT_DYNSYM: /* could treat this like symtab... */
#if 0
fprintf (stderr, "Dynamic Linking sections not yet supported.\n");
}
boolean
-DEFUN (elf_new_section_hook, (abfd, sec),
- bfd *abfd
- AND asection *sec)
+elf_new_section_hook (abfd, sec)
+ bfd *abfd
+ ;
+ asection *sec;
{
struct bfd_elf_section_data *sdata;
sdata = (struct bfd_elf_section_data *) bfd_alloc (abfd, sizeof (*sdata));
+ if (!sdata)
+ {
+ bfd_set_error (bfd_error_no_memory);
+ return false;
+ }
sec->used_by_bfd = (PTR) sdata;
memset (sdata, 0, sizeof (*sdata));
return true;
*/
static boolean
-DEFUN (bfd_section_from_phdr, (abfd, hdr, index),
- bfd * abfd AND
- Elf_Internal_Phdr * hdr AND
- int index)
+bfd_section_from_phdr (abfd, hdr, index)
+ bfd *abfd;
+ Elf_Internal_Phdr *hdr;
+ int index;
{
asection *newsect;
char *name;
(hdr->p_memsz > hdr->p_filesz));
sprintf (namebuf, split ? "segment%da" : "segment%d", index);
name = bfd_alloc (abfd, strlen (namebuf) + 1);
+ if (!name)
+ {
+ bfd_set_error (bfd_error_no_memory);
+ return false;
+ }
strcpy (name, namebuf);
newsect = bfd_make_section (abfd, name);
newsect->vma = hdr->p_vaddr;
{
sprintf (namebuf, "segment%db", index);
name = bfd_alloc (abfd, strlen (namebuf) + 1);
+ if (!name)
+ {
+ bfd_set_error (bfd_error_no_memory);
+ return false;
+ }
strcpy (name, namebuf);
newsect = bfd_make_section (abfd, name);
newsect->vma = hdr->p_vaddr + hdr->p_filesz;
the magic number. */
static INLINE boolean
-DEFUN (elf_file_p, (x_ehdrp), Elf_External_Ehdr * x_ehdrp)
+elf_file_p (x_ehdrp)
+ Elf_External_Ehdr *x_ehdrp;
{
return ((x_ehdrp->e_ident[EI_MAG0] == ELFMAG0)
&& (x_ehdrp->e_ident[EI_MAG1] == ELFMAG1)
FIXME: There is memory leak if we are called more than once with the same
ABFD, and that bfd already has tdata allocated, since we allocate more tdata
and the old tdata is orphaned. Since it's in the bfd obstack, there isn't
- much we can do about this except possibly rewrite the code. There are
+ much we can do about this except possibly rewrite the code. There are
also other bfd_allocs that may be the source of memory leaks as well. */
bfd_target *
-DEFUN (elf_object_p, (abfd), bfd * abfd)
+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;
+ unsigned int shindex;
char *shstrtab; /* Internal copy of section header stringtab */
- struct elf_backend_data *ebd; /* Use to get ELF_ARCH stored in xvec */
+ struct elf_backend_data *ebd;
struct elf_obj_tdata *preserved_tdata = elf_tdata (abfd);
/* Read in the ELF header in external format. */
if (bfd_read ((PTR) & x_ehdr, sizeof (x_ehdr), 1, abfd) != sizeof (x_ehdr))
- goto got_system_call_error;
+ {
+ if (bfd_get_error () != bfd_error_system_call)
+ goto got_wrong_format_error;
+ else
+ goto got_no_match;
+ }
/* 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')
if (i_ehdrp->e_shoff == 0)
goto got_wrong_format_error;
- if (i_ehdrp->e_type == ET_EXEC || i_ehdrp->e_type == ET_DYN)
- abfd->flags |= EXEC_P;
-
- /* 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. */
+ /* 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 got_wrong_format_error;
ebd = get_elf_backend_data (abfd);
- /* 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;
+ /* Check that the ELF e_machine field matches what this particular
+ BFD format expects. */
+ if (ebd->elf_machine_code != i_ehdrp->e_machine)
+ {
+ bfd_target **target_ptr;
- 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 got_wrong_format_error;
- bfd_default_set_arch_mach (abfd, arch, 0);
- }
+ if (ebd->elf_machine_code != EM_NONE)
+ goto got_wrong_format_error;
+
+ /* This is the generic ELF target. Let it match any ELF target
+ for which we do not have a specific backend. */
+ for (target_ptr = bfd_target_vector; *target_ptr != NULL; target_ptr++)
+ {
+ struct elf_backend_data *back;
+
+ if ((*target_ptr)->flavour != bfd_target_elf_flavour)
+ continue;
+ back = (struct elf_backend_data *) (*target_ptr)->backend_data;
+ if (back->elf_machine_code == i_ehdrp->e_machine)
+ {
+ /* target_ptr is an ELF backend which matches this
+ object file, so reject the generic ELF target. */
+ goto got_wrong_format_error;
+ }
+ }
+ }
+
+
+ /* Set the flags and architecture before calling the backend so that
+ it can override them. */
+ if (i_ehdrp->e_type == ET_EXEC)
+ abfd->flags |= EXEC_P;
+ else if (i_ehdrp->e_type == ET_DYN)
+ abfd->flags |= DYNAMIC;
+
+ bfd_default_set_arch_mach (abfd, ebd->arch, 0);
+
+ /* Remember the entry point specified in the ELF file header. */
+ bfd_get_start_address (abfd) = i_ehdrp->e_entry;
+
+ /* Let the backend double check the format and override global
+ information. */
+ if (ebd->elf_backend_object_p)
+ {
+ if ((*ebd->elf_backend_object_p) (abfd) == false)
+ goto got_wrong_format_error;
+ }
/* 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 got_wrong_format_error;
+ read it in, and convert it to internal form. */
i_shdrp = (Elf_Internal_Shdr *)
bfd_alloc (abfd, sizeof (*i_shdrp) * i_ehdrp->e_shnum);
elf_elfsections (abfd) =
(Elf_Internal_Shdr **) bfd_alloc (abfd, sizeof (i_shdrp) * i_ehdrp->e_shnum);
- if (!i_shdrp || !elf_elfsections(abfd))
+ if (!i_shdrp || !elf_elfsections (abfd))
goto got_no_memory_error;
if (bfd_seek (abfd, i_ehdrp->e_shoff, SEEK_SET) == -1)
- goto got_system_call_error;
+ goto got_no_match;
for (shindex = 0; shindex < i_ehdrp->e_shnum; shindex++)
{
if (bfd_read ((PTR) & x_shdr, sizeof x_shdr, 1, abfd) != sizeof (x_shdr))
- goto got_system_call_error;
+ goto got_no_match;
elf_swap_shdr_in (abfd, &x_shdr, i_shdrp + shindex);
- elf_elfsections(abfd)[shindex] = i_shdrp + shindex;
+ elf_elfsections (abfd)[shindex] = i_shdrp + shindex;
+
+ /* If this is a .dynamic section, mark the object file as being
+ dynamically linked. */
+ if (i_shdrp[shindex].sh_type == SHT_DYNAMIC)
+ abfd->flags |= DYNAMIC;
}
if (i_ehdrp->e_shstrndx)
{
bfd_section_from_shdr (abfd, i_ehdrp->e_shstrndx);
}
-#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
-
/* 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 (abfd, shindex);
}
- /* Remember the entry point specified in the ELF file header. */
-
- bfd_get_start_address (abfd) = i_ehdrp->e_entry;
-
return (abfd->xvec);
/* If we are going to use goto's to avoid duplicating error setting
and return(NULL) code, then this at least makes it more maintainable. */
- got_system_call_error:
- bfd_error = system_call_error;
- goto got_no_match;
- got_wrong_format_error:
- bfd_error = wrong_format;
+got_wrong_format_error:
+ bfd_set_error (bfd_error_wrong_format);
goto got_no_match;
- got_no_memory_error:
- bfd_error = no_memory;
+got_no_memory_error:
+ bfd_set_error (bfd_error_no_memory);
goto got_no_match;
- got_no_match:
+got_no_match:
elf_tdata (abfd) = preserved_tdata;
return (NULL);
}
-
\f
+
/* ELF .o/exec file writing */
/* 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)
+elf_symbol_from (ignore_abfd, symbol)
+ bfd *ignore_abfd;
+ asymbol *symbol;
{
if (symbol->the_bfd->xvec->flavour != bfd_target_elf_flavour)
return 0;
header for now. */
static void
-DEFUN (elf_make_sections, (abfd, asect, obj),
- bfd * abfd AND
- asection * asect AND
- PTR obj)
+elf_make_sections (abfd, asect, obj)
+ bfd *abfd;
+ asection *asect;
+ 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;
-
Elf_Internal_Shdr *this_hdr;
this_hdr = &elf_section_data (asect)->this_hdr;
{
/* 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;
rela_hdr = &elf_section_data (asect)->rel_hdr;
rela_hdr->sh_flags = 0;
rela_hdr->sh_addr = 0;
rela_hdr->sh_offset = 0;
- rela_hdr->sh_addralign = 0;
+
+ /* FIXME: Systems I've checked use an alignment of 4, but it is
+ possible that some systems use a different alignment. */
+ rela_hdr->sh_addralign = 4;
+
rela_hdr->size = 0;
}
if (asect->flags & SEC_ALLOC)
/* @@ Do something with sh_type? */
}
}
+ else
+ {
+ /* If this section is not part of the program image during
+ execution, leave the address fields at 0. */
+ this_hdr->sh_addr = 0;
+ asect->vma = 0;
+ }
if (!(asect->flags & SEC_READONLY))
this_hdr->sh_flags |= SHF_WRITE;
int idx;
int use_rela_p = get_elf_backend_data (abfd)->use_rela_p;
asymbol *last_sym = 0;
- int last_sym_idx;
+ int last_sym_idx = 9999999; /* should always be written before use */
if ((sec->flags & SEC_RELOC) == 0)
return;
rela_hdr->sh_size = rela_hdr->sh_entsize * sec->reloc_count;
rela_hdr->contents = (void *) bfd_alloc (abfd, rela_hdr->sh_size);
+ if (!rela_hdr->contents)
+ {
+ bfd_set_error (bfd_error_no_memory);
+ abort (); /* FIXME */
+ }
/* orelocation has the data, reloc_count has the count... */
if (use_rela_p)
PTR obj;
{
Elf_Internal_Shdr *this_hdr = &elf_section_data (asect)->this_hdr;
- int this_idx = elf_section_data(asect)->this_idx;
+ int this_idx = elf_section_data (asect)->this_idx;
/* @@ 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 = (char *) alloca (len);
+ char *s = (char *) malloc (len);
+ if (s == NULL)
+ /* FIXME: Should deal more gracefully with errors. */
+ abort ();
strcpy (s, asect->name);
s[len - 4] = 0;
asect = bfd_get_section_by_name (abfd, s);
+ free (s);
if (!asect)
abort ();
- elf_section_data(asect)->this_hdr.sh_link = this_idx;
-
+ elf_section_data (asect)->this_hdr.sh_link = this_idx;
/* @@ Assuming 32 bits! */
- this_hdr->sh_entsize = 0xc;
+ elf_section_data (asect)->this_hdr.sh_entsize = 0xc;
+
+ this_hdr->sh_type = SHT_STRTAB;
}
}
static void
-DEFUN (elf_fake_sections, (abfd, asect, obj),
- bfd * abfd AND
- asection * asect AND
- PTR obj)
+elf_fake_sections (abfd, asect, obj)
+ bfd *abfd;
+ asection *asect;
+ 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. */
this_hdr->sh_type = SHT_PROGBITS;
else if ((asect->flags & SEC_ALLOC) && ((asect->flags & SEC_LOAD) == 0))
{
- BFD_ASSERT (!strcmp (asect->name, ".bss"));
+ BFD_ASSERT (strcmp (asect->name, ".bss") == 0
+ || strcmp (asect->name, ".sbss") == 0);
this_hdr->sh_type = SHT_NOBITS;
}
/* FIXME I am not sure how to detect a .note section from the flags
else
this_hdr->sh_type = SHT_PROGBITS;
- /* Now, check for processor-specific section types. */
- {
- struct elf_backend_data *bed = get_elf_backend_data (abfd);
-
- if (bed->elf_backend_fake_sections)
- (*bed->elf_backend_fake_sections) (abfd, this_hdr, asect);
- }
-
this_hdr->sh_flags = 0;
this_hdr->sh_addr = 0;
this_hdr->sh_size = 0;
this_hdr->sh_offset = 0;
this_hdr->size = 0;
+ /* Now, check for processor-specific section types. */
+ {
+ struct elf_backend_data *bed = get_elf_backend_data (abfd);
+
+ if (bed->elf_backend_fake_sections)
+ (*bed->elf_backend_fake_sections) (abfd, this_hdr, asect);
+ }
+
{
/* Emit a strtab and symtab, and possibly a reloc section. */
Elf_Internal_Shdr *rela_hdr;
- Elf_Internal_Shdr *symstrtab_hdr;
/* Note that only one symtab is used, so just remember it
for now. */
rela_hdr->sh_addr = 0;
rela_hdr->sh_size = 0;
rela_hdr->sh_offset = 0;
- rela_hdr->sh_addralign = 0;
+
+ /* FIXME: Systems I've checked use an alignment of 4, but some
+ systems may use a different alignment. */
+ rela_hdr->sh_addralign = 4;
+
rela_hdr->size = 0;
}
}
this_hdr->sh_flags |= SHF_EXECINSTR;
}
-
-#if 0
-/*
-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);
-
-xxxDESCRIPTION
- Helper function to locate an ELF section header given the
- name of a BFD section.
-*/
-
-static struct elf_internal_shdr *
-DEFUN (elf_locate_sh, (abfd, strtab, shdrp, name),
- bfd * abfd AND
- struct strtab *strtab AND
- struct elf_internal_shdr *shdrp AND
- CONST char *name)
-{
- Elf_Internal_Shdr *gotit = NULL;
- int max, i;
-
- 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;
-}
-#endif
-
/* Map symbol from it's internal number to the external number, moving
all local symbols to be at the head of the list. */
static INLINE int
-sym_is_global (sym)
+sym_is_global (abfd, sym)
+ bfd *abfd;
asymbol *sym;
{
+ /* If the backend has a special mapping, use it. */
+ if (get_elf_backend_data (abfd)->elf_backend_sym_is_global)
+ return ((*get_elf_backend_data (abfd)->elf_backend_sym_is_global)
+ (abfd, sym));
+
if (sym->flags & (BSF_GLOBAL | BSF_WEAK))
{
if (sym->flags & BSF_LOCAL)
return 0;
}
-static void
-DEFUN (elf_map_symbols, (abfd), bfd * abfd)
+static boolean
+elf_map_symbols (abfd)
+ bfd *abfd;
{
int symcount = bfd_get_symcount (abfd);
asymbol **syms = bfd_get_outsymbols (abfd);
sect_syms = (asymbol **) bfd_zalloc (abfd, max_index * sizeof (asymbol *));
elf_section_syms (abfd) = sect_syms;
- BFD_ASSERT (sect_syms != 0);
+ if (sect_syms == 0)
+ {
+ bfd_set_error (bfd_error_no_memory);
+ return false;
+ }
for (asect = abfd->sections; asect; asect = asect->next)
{
asymbol *sym = bfd_make_empty_symbol (abfd);
+ if (!sym)
+ {
+ bfd_set_error (bfd_error_no_memory);
+ return false;
+ }
sym->the_bfd = abfd;
sym->name = asect->name;
sym->value = asect->vma;
* sizeof (asymbol *)));
else
syms = (asymbol **) bfd_alloc (abfd,
- (num_sections + 1) * sizeof (asymbol *));
+ (num_sections + 1) * sizeof (asymbol *));
+ if (!syms)
+ {
+ bfd_set_error (bfd_error_no_memory);
+ return false;
+ }
for (asect = abfd->sections; asect; asect = asect->next)
{
elf_sym_extra (abfd) = sym_extra
= (Elf_Sym_Extra *) bfd_alloc (abfd, symcount * sizeof (Elf_Sym_Extra));
+ if (!sym_extra)
+ {
+ bfd_set_error (bfd_error_no_memory);
+ return false;
+ }
/* Identify and classify all of the symbols. */
for (idx = 0; idx < symcount; idx++)
{
- if (!sym_is_global (syms[idx]))
+ if (!sym_is_global (abfd, syms[idx]))
num_locals++;
else
num_globals++;
dummy symbol. */
for (idx = 0; idx < symcount; idx++)
{
- syms[idx]->udata = (PTR) &sym_extra[idx];
- if (!sym_is_global (syms[idx]))
+ syms[idx]->udata = (PTR) & sym_extra[idx];
+ if (!sym_is_global (abfd, syms[idx]))
sym_extra[idx].elf_sym_num = 1 + num_locals2++;
else
sym_extra[idx].elf_sym_num = 1 + num_locals + num_globals2++;
elf_num_locals (abfd) = num_locals;
elf_num_globals (abfd) = num_globals;
+ return true;
}
-static void assign_section_numbers ();
-static void assign_file_positions_except_relocs ();
+static boolean assign_section_numbers ();
+static boolean assign_file_positions_except_relocs ();
static boolean
-DEFUN (elf_compute_section_file_positions, (abfd), bfd * abfd)
+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_map_over_sections (abfd, elf_fake_sections, 0);
- assign_section_numbers (abfd);
+ if (!assign_section_numbers (abfd))
+ return false;
bfd_map_over_sections (abfd, elf_make_sections, 0);
- bfd_map_over_sections (abfd, fix_up_strtabs, 0); /* .stab/.stabstr &c */
+ bfd_map_over_sections (abfd, fix_up_strtabs, 0); /* .stab/.stabstr &c */
- swap_out_syms (abfd);
+ if (swap_out_syms (abfd) == false)
+ return false;
- assign_file_positions_except_relocs (abfd);
+ if (!assign_file_positions_except_relocs (abfd))
+ return false;
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)
+elf_write_phdrs (abfd, i_ehdrp, i_phdrp, phdr_cnt)
+ bfd *abfd;
+ Elf_Internal_Ehdr *i_ehdrp;
+ Elf_Internal_Phdr *i_phdrp;
+ unsigned short phdr_cnt;
{
/* first program header entry goes after the file header */
int outbase = i_ehdrp->e_phoff;
- int i;
+ unsigned int i;
Elf_External_Phdr x_phdr;
for (i = 0; i < phdr_cnt; i++)
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
+static boolean
assign_section_numbers (abfd)
bfd *abfd;
{
int i;
Elf_Internal_Shdr **i_shdrp;
- t->shstrtab_hdr.sh_size = elf_shstrtab(abfd)->length;
- t->shstrtab_hdr.contents = (void *) elf_shstrtab(abfd)->tab;
+ t->shstrtab_hdr.sh_size = elf_shstrtab (abfd)->length;
+ t->shstrtab_hdr.contents = (void *) elf_shstrtab (abfd)->tab;
shstrtab_length_fixed = 1;
t->shstrtab_section = section_number++;
- elf_elfheader(abfd)->e_shstrndx = t->shstrtab_section;
+ elf_elfheader (abfd)->e_shstrndx = t->shstrtab_section;
if (abfd->symcount)
{
t->symtab_section = section_number++;
d->rel_idx = 0;
/* No handling for per-section string tables currently. */
}
- elf_elfheader(abfd)->e_shnum = section_number;
+ elf_elfheader (abfd)->e_shnum = section_number;
/* Set up the list of section header pointers, in agreement with the
indices. */
i_shdrp = (Elf_Internal_Shdr **)
bfd_alloc (abfd, section_number * sizeof (Elf_Internal_Shdr *));
- elf_elfsections(abfd) = i_shdrp;
+ if (!i_shdrp)
+ {
+ bfd_set_error (bfd_error_no_memory);
+ return false;
+ }
+ 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[0] = (Elf_Internal_Shdr *) & null_shdr;
i_shdrp[t->shstrtab_section] = &t->shstrtab_hdr;
if (abfd->symcount)
{
for (i = 0; i < section_number; i++)
if (i_shdrp[i] == 0)
abort ();
+ return true;
}
static INLINE file_ptr
Elf_Internal_Shdr *i_shdrp;
file_ptr offset;
{
- i_shdrp->sh_offset = offset;
+ int align;
+
+ if (i_shdrp->sh_addralign != 0)
+ align = i_shdrp->sh_addralign;
+ else
+ align = 1;
+ i_shdrp->sh_offset = offset = BFD_ALIGN (offset, align);
+ if (i_shdrp->rawdata != NULL)
+ ((asection *) i_shdrp->rawdata)->filepos = offset;
if (i_shdrp->sh_type != SHT_NOBITS)
offset += i_shdrp->sh_size;
return offset;
}
+static INLINE file_ptr
+align_file_position (off)
+ file_ptr off;
+{
+ return (off + FILE_ALIGN - 1) & ~(FILE_ALIGN - 1);
+}
+
static INLINE file_ptr
assign_file_positions_for_symtab_and_strtabs (abfd, off)
bfd *abfd;
{
struct elf_obj_tdata *t = elf_tdata (abfd);
- off = assign_file_position_for_section (&t->shstrtab_hdr, off);
+ off = align_file_position (off);
off = assign_file_position_for_section (&t->symtab_hdr, off);
+ off = assign_file_position_for_section (&t->shstrtab_hdr, off);
off = assign_file_position_for_section (&t->strtab_hdr, off);
return off;
}
-struct seg_info {
+struct seg_info
+{
bfd_vma low, mem_size;
file_ptr file_size;
int start_pos;
struct seg_info *next;
};
-static void
+static boolean
map_program_segments (abfd)
bfd *abfd;
{
Elf_Internal_Ehdr *i_ehdrp = elf_elfheader (abfd);
Elf_Internal_Shdr *i_shdrp;
Elf_Internal_Phdr *phdr;
- char *done;
- int i, n_left = 0;
+ char *done = NULL;
+ unsigned int i, n_left = 0;
file_ptr lowest_offset = 0;
- struct seg_info *seg = 0;
+ struct seg_info *seg = NULL;
- done = (char *) alloca (i_ehdrp->e_shnum);
+ done = (char *) malloc (i_ehdrp->e_shnum);
+ if (done == NULL && i_ehdrp->e_shnum != 0)
+ {
+ bfd_set_error (bfd_error_no_memory);
+ goto error_return;
+ }
memset (done, 0, i_ehdrp->e_shnum);
- for (i = 0; i < i_ehdrp->e_shnum; i++)
+ for (i = 1; i < i_ehdrp->e_shnum; i++)
{
i_shdrp = i_shdrpp[i];
/* If it's going to be mapped in, it's been assigned a position. */
int low_sec = 0;
int mem_size;
int file_size = 0;
+ struct seg_info *snew;
+ struct seg_info **s_ptr;
for (i = 1; i < i_ehdrp->e_shnum; i++)
{
abort ();
/* So now we know the lowest vma of any unassigned sections; start
a segment there. */
- {
- struct seg_info *s;
- s = (struct seg_info *) bfd_alloc (abfd, sizeof (struct seg_info));
- s->next = seg;
- seg = s;
- }
- seg->low = lowest_vma;
+ snew = (struct seg_info *) bfd_alloc (abfd, sizeof (struct seg_info));
+ if (!snew)
+ {
+ bfd_set_error (bfd_error_no_memory);
+ goto error_return;
+ }
+ s_ptr = &seg;
+ while (*s_ptr != (struct seg_info *) NULL)
+ s_ptr = &(*s_ptr)->next;
+ *s_ptr = snew;
+ snew->next = NULL;
+ snew->low = lowest_vma;
i_shdrp = i_shdrpp[low_sec];
- seg->start_pos = i_shdrp->sh_offset;
- seg->sh_flags = i_shdrp->sh_flags;
+ snew->start_pos = i_shdrp->sh_offset;
+ snew->sh_flags = i_shdrp->sh_flags;
done[low_sec] = 1, n_left--;
mem_size = i_shdrp->sh_size;
high = lowest_vma + i_shdrp->sh_size;
if (i_shdrp->sh_type == SHT_PROGBITS)
file_size = i_shdrp->sh_size;
- for (i = 0; i < i_ehdrp->e_shnum; i++)
+ for (i = 1; i < i_ehdrp->e_shnum; i++)
{
file_ptr f1;
- if (file_size != mem_size)
- break;
if (done[i])
continue;
i_shdrp = i_shdrpp[i];
/* position of next byte on disk */
- f1 = seg->start_pos + file_size;
+ f1 = snew->start_pos + file_size;
if (i_shdrp->sh_type == SHT_PROGBITS)
{
if (i_shdrp->sh_offset - f1 != i_shdrp->sh_addr - high)
continue;
+ if (file_size != mem_size)
+ break;
}
- else /* sh_type == NOBITS */
+ else
+ /* sh_type == NOBITS */
{
/* If the section in question has no contents in the disk
file, we really don't care where it supposedly starts.
bfd_vma page1, page2;
bfd_vma maxpagesize = get_elf_backend_data (abfd)->maxpagesize;
- /* page number in address space of current end of seg */
+ /* page number in address space of current end of snew */
page1 = (high - 1 + maxpagesize - 1) / maxpagesize;
/* page number in address space of start of this section */
page2 = (i_shdrp->sh_addr + maxpagesize - 1) / maxpagesize;
}
done[i] = 1, n_left--;
if (i_shdrp->sh_type == SHT_PROGBITS)
- file_size = i_shdrp->sh_offset + i_shdrp->sh_size - seg->start_pos;
- mem_size = i_shdrp->sh_addr + i_shdrp->sh_size - seg->low;
+ file_size = i_shdrp->sh_offset + i_shdrp->sh_size - snew->start_pos;
+ mem_size = i_shdrp->sh_addr + i_shdrp->sh_size - snew->low;
high = i_shdrp->sh_addr + i_shdrp->sh_size;
i = 0;
}
- seg->file_size = file_size;
- seg->mem_size = mem_size;
+ snew->file_size = file_size;
+ snew->mem_size = mem_size;
}
/* Now do something with the list of segments we've built up. */
{
}
i_ehdrp->e_phentsize = sizeof (Elf_External_Phdr);
sz = sizeof (Elf_External_Phdr) * n_segs;
- if (i_ehdrp->e_ehsize + sz <= lowest_offset)
- i_ehdrp->e_phoff = i_ehdrp->e_ehsize;
+ if (align_file_position (i_ehdrp->e_ehsize) + sz <= lowest_offset)
+ i_ehdrp->e_phoff = align_file_position (i_ehdrp->e_ehsize);
else
{
- i_ehdrp->e_phoff = elf_tdata (abfd)->next_file_pos;
- elf_tdata (abfd)->next_file_pos += sz;
+ i_ehdrp->e_phoff = align_file_position (elf_tdata (abfd)->next_file_pos);
+ elf_tdata (abfd)->next_file_pos = i_ehdrp->e_phoff + sz;
+ }
+ phdr = (Elf_Internal_Phdr *) bfd_alloc (abfd,
+ n_segs * sizeof (Elf_Internal_Phdr));
+ if (!phdr)
+ {
+ bfd_set_error (bfd_error_no_memory);
+ abort (); /* FIXME */
}
- phdr = (Elf_Internal_Phdr*) bfd_alloc (abfd,
- n_segs * sizeof (Elf_Internal_Phdr));
elf_tdata (abfd)->phdr = phdr;
while (seg)
{
phdr->p_filesz = seg->file_size;
phdr->p_memsz = seg->mem_size;
phdr->p_flags = PF_R;
- phdr->p_align = maxpagesize; /* ? */
+ phdr->p_align = maxpagesize; /* ? */
if (seg->sh_flags & SHF_WRITE)
/* SysVr4 ELF docs say "data segments normally have read, write,
and execute permissions." */
i_ehdrp->e_phnum = n_segs;
}
elf_write_phdrs (abfd, i_ehdrp, elf_tdata (abfd)->phdr, i_ehdrp->e_phnum);
+ if (done != NULL)
+ free (done);
+ return true;
+error_return:
+ if (done != NULL)
+ free (done);
+ return false;
}
-static void
+static boolean
assign_file_positions_except_relocs (abfd)
bfd *abfd;
{
The order, for now: <ehdr> <shdr> <sec1> <sec2> <sec3> ... <rel1> ...
or: <ehdr> <phdr> <sec1> <sec2> ... <shdr> <rel1> ... */
+ struct elf_obj_tdata *t = elf_tdata (abfd);
file_ptr off;
- int i;
+ unsigned int i;
Elf_Internal_Shdr **i_shdrpp = elf_elfsections (abfd);
Elf_Internal_Shdr *i_shdrp;
Elf_Internal_Ehdr *i_ehdrp = elf_elfheader (abfd);
int exec_p = (abfd->flags & EXEC_P) != 0;
+ bfd_vma maxpagesize = get_elf_backend_data (abfd)->maxpagesize;
/* Everything starts after the ELF file header. */
off = i_ehdrp->e_ehsize;
if (!exec_p)
{
/* Section headers. */
+ off = align_file_position (off);
i_ehdrp->e_shoff = off;
off += i_ehdrp->e_shnum * i_ehdrp->e_shentsize;
-
off = assign_file_positions_for_symtab_and_strtabs (abfd, off);
}
- for (i = 0; i < i_ehdrp->e_shnum; i++)
+ for (i = 1; i < i_ehdrp->e_shnum; i++)
{
+ /* The symtab and strtab sections are placed by
+ assign_file_positions_for_symtab_and_strtabs. */
+ if (i == t->symtab_section
+ || i == t->strtab_section
+ || i == t->shstrtab_section)
+ continue;
+
i_shdrp = i_shdrpp[i];
if (i_shdrp->sh_type == SHT_REL || i_shdrp->sh_type == SHT_RELA)
{
}
if (exec_p)
{
- bfd_vma maxpagesize = get_elf_backend_data (abfd)->maxpagesize;
if (maxpagesize == 0)
maxpagesize = 1; /* make the arithmetic work */
/* This isn't necessarily going to give the best packing, if the
}
/* Blindly assume that the segments are ordered optimally. With
the default LD script, they will be. */
- {
- /* need big unsigned type */
- bfd_vma addtl_off;
- addtl_off = i_shdrp->sh_addr - off;
- addtl_off = addtl_off % maxpagesize;
- if (addtl_off)
- {
- off += addtl_off;
- }
- }
- if (i_shdrp->sh_type == SHT_NOBITS)
+ if (i_shdrp->sh_type != SHT_NOBITS)
{
- file_ptr off2;
- i_shdrp->sh_offset = off;
- if (off % maxpagesize != 0)
- off2 = maxpagesize - (off % maxpagesize);
- if (off2 > i_shdrp->sh_size)
- off2 = i_shdrp->sh_size;
- off += off2;
+ /* need big unsigned type */
+ bfd_vma addtl_off;
+ addtl_off = i_shdrp->sh_addr - off;
+ addtl_off = addtl_off % maxpagesize;
+ if (addtl_off)
+ {
+ off += addtl_off;
+ }
}
}
off = assign_file_position_for_section (i_shdrp, off);
+
if (exec_p
- && get_elf_backend_data(abfd)->maxpagesize > 1
+ && i_shdrp->sh_type == SHT_NOBITS
+ && (i == i_ehdrp->e_shnum
+ || i_shdrpp[i + 1]->sh_type != SHT_NOBITS))
+ {
+ /* Skip to the next page to ensure that when the file is
+ loaded the bss section is loaded with zeroes. I don't
+ know if this is required on all platforms, but it
+ shouldn't really hurt. */
+ off = BFD_ALIGN (off, maxpagesize);
+ }
+
+ if (exec_p
+ && get_elf_backend_data (abfd)->maxpagesize > 1
&& i_shdrp->sh_type == SHT_PROGBITS
&& (i_shdrp->sh_flags & SHF_ALLOC)
- && (i_shdrp->sh_offset - i_shdrp->sh_addr) % get_elf_backend_data(abfd)->maxpagesize != 0)
+ && (i_shdrp->sh_offset - i_shdrp->sh_addr) % get_elf_backend_data (abfd)->maxpagesize != 0)
abort ();
}
if (exec_p)
{
elf_tdata (abfd)->next_file_pos = off;
- map_program_segments (abfd);
+ if (!map_program_segments (abfd))
+ return false;
off = elf_tdata (abfd)->next_file_pos;
/* Section headers. */
+ off = align_file_position (off);
i_ehdrp->e_shoff = off;
off += i_ehdrp->e_shnum * i_ehdrp->e_shentsize;
off = assign_file_positions_for_symtab_and_strtabs (abfd, off);
- for (i = 0; i < i_ehdrp->e_shnum; i++)
+ for (i = 1; i < i_ehdrp->e_shnum; i++)
{
i_shdrp = i_shdrpp[i];
if (i_shdrp->sh_offset + 1 == 0
}
}
elf_tdata (abfd)->next_file_pos = off;
+ return true;
}
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_Phdr *i_phdrp = 0; /* Program header table, internal form */
Elf_Internal_Shdr **i_shdrp; /* Section header table, internal form */
-
int count;
- int scnt;
struct strtab *shstrtab;
i_ehdrp = elf_elfheader (abfd);
i_shdrp = elf_elfsections (abfd);
shstrtab = bfd_new_strtab (abfd);
+ if (!shstrtab)
+ return false;
+
elf_shstrtab (abfd) = shstrtab;
i_ehdrp->e_ident[EI_MAG0] = ELFMAG0;
case bfd_arch_hppa:
i_ehdrp->e_machine = EM_HPPA;
break;
+ case bfd_arch_powerpc:
+ i_ehdrp->e_machine = EM_CYGNUS_POWERPC;
+ break;
/* also note that EM_M32, AT&T WE32100 is unknown to bfd */
default:
i_ehdrp->e_machine = EM_NONE;
".strtab");
elf_tdata (abfd)->shstrtab_hdr.sh_name = bfd_add_to_strtab (abfd, shstrtab,
".shstrtab");
-
+ return true;
}
-static void
+static boolean
swap_out_syms (abfd)
bfd *abfd;
{
- struct strtab *shstrtab = elf_shstrtab (abfd);
-
- elf_map_symbols (abfd);
+ if (!elf_map_symbols (abfd))
+ return false;
/* Dump out the symtabs. */
{
Elf_External_Sym *outbound_syms;
int idx;
+ if (!stt)
+ return false;
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;
+ /* FIXME: Systems I've checked use 4 byte alignment for .symtab,
+ but it is possible that there are systems which use a different
+ alignment. */
+ symtab_hdr->sh_addralign = 4;
+
/* see assert in elf_fake_sections that supports this: */
symstrtab_hdr = &elf_tdata (abfd)->strtab_hdr;
symstrtab_hdr->sh_type = SHT_STRTAB;
outbound_syms = (Elf_External_Sym *)
bfd_alloc (abfd, (1 + symcount) * sizeof (Elf_External_Sym));
+ if (!outbound_syms)
+ {
+ bfd_set_error (bfd_error_no_memory);
+ return false;
+ }
/* now generate the data (for "contents") */
{
/* Fill in zeroth symbol and swap it out. */
sym.st_size = value;
/* Should retrieve this from somewhere... */
sym.st_value = 16;
- sym.st_shndx = SHN_COMMON;
+ sym.st_shndx = elf_section_from_bfd_section (abfd,
+ syms[idx]->section);
}
else
{
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);
+ BFD_ASSERT (sec2 != 0);
sym.st_shndx = shndx = elf_section_from_bfd_section (abfd, sec2);
- assert (shndx != -1);
+ BFD_ASSERT (shndx != -1);
}
}
if (bfd_is_com_section (syms[idx]->section))
- sym.st_info = ELF_ST_INFO (STB_GLOBAL, STT_NOTYPE);
+ sym.st_info = ELF_ST_INFO (STB_GLOBAL, STT_OBJECT);
else if (syms[idx]->section == &bfd_und_section)
sym.st_info = ELF_ST_INFO (STB_GLOBAL, STT_NOTYPE);
else if (syms[idx]->flags & BSF_SECTION_SYM)
symstrtab_hdr->sh_entsize = 0;
symstrtab_hdr->sh_link = 0;
symstrtab_hdr->sh_info = 0;
- symstrtab_hdr->sh_addralign = 0;
+ symstrtab_hdr->sh_addralign = 1;
symstrtab_hdr->size = 0;
}
{
Elf_Internal_Shdr *this_hdr;
- this_hdr = &elf_tdata(abfd)->shstrtab_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->sh_addralign = 1;
this_hdr->size = 0;
}
+ return true;
}
static boolean
{
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 */
-
- int count;
- int scnt;
+ unsigned int count;
struct strtab *shstrtab;
i_ehdrp = elf_elfheader (abfd);
bfd_alloc (abfd, sizeof (*x_shdrp) * (i_ehdrp->e_shnum));
if (!x_shdrp)
{
- bfd_error = no_memory;
+ bfd_set_error (bfd_error_no_memory);
return false;
}
assign_file_positions_for_relocs (abfd)
bfd *abfd;
{
- file_ptr off = elf_tdata(abfd)->next_file_pos;
- int i;
+ file_ptr off = elf_tdata (abfd)->next_file_pos;
+ unsigned int i;
Elf_Internal_Shdr **shdrpp = elf_elfsections (abfd);
Elf_Internal_Shdr *shdrp;
- for (i = 0; i < elf_elfheader(abfd)->e_shnum; i++)
+ for (i = 1; i < elf_elfheader (abfd)->e_shnum; i++)
{
shdrp = shdrpp[i];
if (shdrp->sh_type != SHT_REL && shdrp->sh_type != SHT_RELA)
continue;
+ off = align_file_position (off);
off = assign_file_position_for_section (shdrp, off);
}
- elf_tdata(abfd)->next_file_pos = off;
+ elf_tdata (abfd)->next_file_pos = off;
}
boolean
-DEFUN (NAME(bfd_elf,write_object_contents), (abfd), bfd * abfd)
+NAME(bfd_elf,write_object_contents) (abfd)
+ bfd *abfd;
{
+ struct elf_backend_data *bed = get_elf_backend_data (abfd);
Elf_Internal_Ehdr *i_ehdrp;
Elf_Internal_Shdr **i_shdrp;
- int count;
+ unsigned int count;
+
+ /* We don't know how to write dynamic objects. Specifically, we
+ don't know how to construct the program header. */
+ if ((abfd->flags & DYNAMIC) != 0)
+ {
+ fprintf (stderr, "Writing ELF dynamic objects is not supported\n");
+ bfd_set_error (bfd_error_wrong_format);
+ return false;
+ }
if (abfd->output_has_begun == false)
{
- prep_headers (abfd);
- elf_compute_section_file_positions (abfd);
+ if (prep_headers (abfd) == false)
+ return false;
+ if (elf_compute_section_file_positions (abfd) == false)
+ return false;
abfd->output_has_begun = true;
}
assign_file_positions_for_relocs (abfd);
/* After writing the headers, we need to write the sections too... */
- for (count = 0; count < i_ehdrp->e_shnum; count++)
+ for (count = 1; count < i_ehdrp->e_shnum; count++)
{
- struct elf_backend_data *bed = get_elf_backend_data (abfd);
-
if (bed->elf_backend_section_processing)
(*bed->elf_backend_section_processing) (abfd, i_shdrp[count]);
if (i_shdrp[count]->contents)
abfd);
}
}
+
+ if (bed->elf_backend_final_write_processing)
+ (*bed->elf_backend_final_write_processing) (abfd);
+
return write_shdrs_and_ehdr (abfd);
}
doesn't have anything like a tdata field... */
static struct sec *
-DEFUN (section_from_elf_index, (abfd, index),
- bfd * abfd AND
- int index)
+section_from_elf_index (abfd, index)
+ bfd *abfd;
+ unsigned int index;
{
/* @@ Is bfd_com_section really correct in all the places it could
be returned from this routine? */
/* 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_section_from_bfd_section (abfd, asect)
+ bfd *abfd;
+ struct sec *asect;
{
Elf_Internal_Shdr **i_shdrp = elf_elfsections (abfd);
int index;
return index;
}
break;
+
+ case SHT_STRTAB:
+ /* fix_up_strtabs will generate STRTAB sections with names
+ of .stab*str. */
+ if (!strncmp (asect->name, ".stab", 5)
+ && !strcmp ("str", asect->name + strlen (asect->name) - 3))
+ {
+ if (hdr->rawdata)
+ {
+ if (((struct sec *) (hdr->rawdata)) == asect)
+ return index;
+ }
+ break;
+ }
+ /* FALL THROUGH */
default:
{
struct elf_backend_data *bed = get_elf_backend_data (abfd);
if (bed->elf_backend_section_from_bfd_section)
- if ((*bed->elf_backend_section_from_bfd_section) (abfd, hdr, asect))
- return index;
+ {
+ int retval;
+
+ retval = index;
+ if ((*bed->elf_backend_section_from_bfd_section)
+ (abfd, hdr, asect, &retval))
+ return retval;
+ }
}
break;
}
/* 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)
+elf_symbol_from_bfd_symbol (abfd, asym_ptr_ptr)
+ bfd *abfd;
+ 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);
flagword flags = asym_ptr->flags;
- asymbol **syms = bfd_get_outsymbols (abfd);
/* When gas creates relocations against local labels, it creates its
own symbol for the section, but does put the symbol into the
indx = asym_ptr->section->index;
if (elf_section_syms (abfd)[indx])
asym_ptr->udata = elf_section_syms (abfd)[indx]->udata;
- }
+ }
if (asym_ptr->udata)
- idx = ((Elf_Sym_Extra *)asym_ptr->udata)->elf_sym_num;
+ idx = ((Elf_Sym_Extra *) asym_ptr->udata)->elf_sym_num;
else
{
abort ();
fprintf (stderr,
"elf_symbol_from_bfd_symbol 0x%.8lx, name = %s, sym num = %d, flags = 0x%.8lx %s\n",
- (long) asym_ptr, asym_ptr->name, idx, flags, elf_symbol_flags (flags));
+ (long) asym_ptr, asym_ptr->name, idx, flags, elf_symbol_flags (flags));
fflush (stderr);
}
#endif
}
static boolean
-DEFUN (elf_slurp_symbol_table, (abfd, symptrs),
- bfd * abfd AND
- asymbol ** symptrs) /* Buffer for generated bfd symbols */
+elf_slurp_symbol_table (abfd, symptrs)
+ bfd *abfd;
+ 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_Internal_Shdr *hdr = &elf_tdata (abfd)->symtab_hdr;
+ long symcount; /* Number of external ELF symbols */
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_Sym *x_symp = NULL;
/* this is only valid because there is only one symtab... */
/* FIXME: This is incorrect, there may also be a dynamic symbol
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;
- }
/* Read each raw ELF symbol, converting from external ELF form to
internal ELF form, and then using the information to create a
build the caller's pointer vector. */
if (bfd_seek (abfd, hdr->sh_offset, SEEK_SET) == -1)
- {
- bfd_error = system_call_error;
- return false;
- }
+ return false;
symcount = hdr->sh_size / sizeof (Elf_External_Sym);
- symbase = (elf_symbol_type *) bfd_zalloc (abfd, symcount * sizeof (elf_symbol_type));
- sym = symbase;
-
- /* Temporarily allocate room for the raw ELF symbols. */
- x_symp = (Elf_External_Sym *) bfd_xmalloc (symcount * sizeof (Elf_External_Sym));
- 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++)
+ if (symcount == 0)
+ sym = symbase = NULL;
+ else
{
- elf_swap_symbol_in (abfd, x_symp + i, &i_sym);
- memcpy (&sym->internal_elf_sym, &i_sym, sizeof (Elf_Internal_Sym));
-#ifdef ELF_KEEP_EXTSYM
- memcpy (&sym->native_elf_sym, x_symp + i, sizeof (Elf_External_Sym));
-#endif
- sym->symbol.the_bfd = abfd;
-
- sym->symbol.name = elf_string_from_elf_section (abfd, hdr->sh_link,
- i_sym.st_name);
+ long i;
- sym->symbol.value = i_sym.st_value;
+ if (bfd_seek (abfd, hdr->sh_offset, SEEK_SET) == -1)
+ return false;
- 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)
+ symbase = ((elf_symbol_type *)
+ bfd_zalloc (abfd, symcount * sizeof (elf_symbol_type)));
+ if (symbase == (elf_symbol_type *) NULL)
{
- sym->symbol.section = &bfd_abs_section;
+ bfd_set_error (bfd_error_no_memory);
+ return false;
}
- else if (i_sym.st_shndx == SHN_COMMON)
+ sym = symbase;
+
+ /* Temporarily allocate room for the raw ELF symbols. */
+ x_symp = ((Elf_External_Sym *)
+ malloc (symcount * sizeof (Elf_External_Sym)));
+ if (x_symp == NULL && symcount != 0)
{
- 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;
+ bfd_set_error (bfd_error_no_memory);
+ goto error_return;
}
- else if (i_sym.st_shndx == SHN_UNDEF)
+
+ if (bfd_read ((PTR) x_symp, sizeof (Elf_External_Sym), symcount, abfd)
+ != symcount * sizeof (Elf_External_Sym))
+ goto error_return;
+ /* Skip first symbol, which is a null dummy. */
+ for (i = 1; i < symcount; i++)
{
- sym->symbol.section = &bfd_und_section;
- }
- else
- sym->symbol.section = &bfd_abs_section;
+ elf_swap_symbol_in (abfd, x_symp + i, &i_sym);
+ memcpy (&sym->internal_elf_sym, &i_sym, sizeof (Elf_Internal_Sym));
+#ifdef ELF_KEEP_EXTSYM
+ memcpy (&sym->native_elf_sym, x_symp + i, sizeof (Elf_External_Sym));
+#endif
+ sym->symbol.the_bfd = abfd;
- sym->symbol.value -= sym->symbol.section->vma;
+ sym->symbol.name = elf_string_from_elf_section (abfd, hdr->sh_link,
+ i_sym.st_name);
- 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;
- break;
- case STB_WEAK:
- sym->symbol.flags |= BSF_WEAK;
- break;
- }
+ sym->symbol.value = i_sym.st_value;
- 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;
- }
+ 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;
- /* Do some backend-specific processing on this symbol. */
- {
- struct elf_backend_data *ebd = get_elf_backend_data (abfd);
- if (ebd->elf_backend_symbol_processing)
- (*ebd->elf_backend_symbol_processing) (abfd, &sym->symbol);
- }
+ sym->symbol.value -= sym->symbol.section->vma;
- sym++;
+ 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;
+ break;
+ case STB_WEAK:
+ sym->symbol.flags |= BSF_WEAK;
+ break;
+ }
+
+ 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;
+ }
+
+ /* Do some backend-specific processing on this symbol. */
+ {
+ struct elf_backend_data *ebd = get_elf_backend_data (abfd);
+ if (ebd->elf_backend_symbol_processing)
+ (*ebd->elf_backend_symbol_processing) (abfd, &sym->symbol);
+ }
+
+ sym++;
+ }
}
/* Do some backend-specific processing on this symbol table. */
*symptrs = 0; /* Final null pointer */
}
+ if (x_symp != NULL)
+ free (x_symp);
return true;
+error_return:
+ if (x_symp != NULL)
+ free (x_symp);
+ return false;
}
/* Return the number of bytes required to hold the symtab vector.
always has a dummy entry as symbol #0, so it ends up even. */
unsigned int
-DEFUN (elf_get_symtab_upper_bound, (abfd), bfd * abfd)
+elf_get_symtab_upper_bound (abfd)
+ bfd *abfd;
{
unsigned int symcount;
unsigned int symtab_size = 0;
- Elf_Internal_Shdr *hdr = &elf_tdata(abfd)->symtab_hdr;
+ Elf_Internal_Shdr *hdr = &elf_tdata (abfd)->symtab_hdr;
symcount = hdr->sh_size / sizeof (Elf_External_Sym);
- symtab_size = (symcount - 1 + 1) * (sizeof (asymbol));
+ symtab_size = (symcount - 1 + 1) * (sizeof (asymbol *));
return symtab_size;
}
if (asect->flags & SEC_RELOC)
{
/* either rel or rela */
- return elf_section_data(asect)->rel_hdr.sh_size;
+ return elf_section_data (asect)->rel_hdr.sh_size;
}
else
return 0;
}
static boolean
-DEFUN (elf_slurp_reloca_table, (abfd, asect, symbols),
- bfd * abfd AND
- sec_ptr asect AND
- asymbol ** symbols)
+elf_slurp_reloca_table (abfd, asect, symbols)
+ bfd *abfd;
+ sec_ptr asect;
+ asymbol **symbols;
{
Elf_External_Rela *native_relocs;
arelent *reloc_cache;
bfd_seek (abfd, asect->rel_filepos, SEEK_SET);
native_relocs = (Elf_External_Rela *)
bfd_alloc (abfd, asect->reloc_count * sizeof (Elf_External_Rela));
+ if (!native_relocs)
+ {
+ bfd_set_error (bfd_error_no_memory);
+ return false;
+ }
bfd_read ((PTR) native_relocs,
sizeof (Elf_External_Rela), asect->reloc_count, abfd);
if (!reloc_cache)
{
- bfd_error = no_memory;
+ bfd_set_error (bfd_error_no_memory);
return false;
}
/* 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;
- s = *cache_ptr->sym_ptr_ptr;
- if (s->name == 0 || s->name[0] == 0)
- abort ();
- }
- }
+
+ /* ELF_R_SYM(dst.r_info) is the symbol table offset. An offset
+ of zero points to the dummy symbol, which was not read into
+ the symbol table SYMBOLS. */
+ if (ELF_R_SYM (dst.r_info) == 0)
+ cache_ptr->sym_ptr_ptr = bfd_abs_section.symbol_ptr_ptr;
+ else
+ {
+ asymbol *s;
+
+ cache_ptr->sym_ptr_ptr = symbols + ELF_R_SYM (dst.r_info) - 1;
+
+ /* Translate any ELF section symbol into a BFD section
+ symbol. */
+ s = *(cache_ptr->sym_ptr_ptr);
+ if (s->flags & BSF_SECTION_SYM)
+ {
+ cache_ptr->sym_ptr_ptr = s->section->symbol_ptr_ptr;
+ s = *cache_ptr->sym_ptr_ptr;
+ if (s->name == 0 || s->name[0] == 0)
+ abort ();
+ }
+ }
cache_ptr->addend = dst.r_addend;
/* Fill in the cache_ptr->howto field from dst.r_type */
#endif
static boolean
-DEFUN (elf_slurp_reloc_table, (abfd, asect, symbols),
- bfd * abfd AND
- sec_ptr asect AND
- asymbol ** symbols)
+elf_slurp_reloc_table (abfd, asect, symbols)
+ bfd *abfd;
+ sec_ptr asect;
+ asymbol **symbols;
{
Elf_External_Rel *native_relocs;
arelent *reloc_cache;
arelent *cache_ptr;
Elf_Internal_Shdr *data_hdr;
- ElfNAME (Off) data_off;
- ElfNAME (Word) data_max;
+ bfd_vma data_off;
+ unsigned long data_max;
char buf[4]; /* FIXME -- might be elf64 */
unsigned int idx;
bfd_seek (abfd, asect->rel_filepos, SEEK_SET);
native_relocs = (Elf_External_Rel *)
bfd_alloc (abfd, asect->reloc_count * sizeof (Elf_External_Rel));
+ if (!native_relocs)
+ {
+ bfd_set_error (bfd_error_no_memory);
+ return false;
+ }
bfd_read ((PTR) native_relocs,
sizeof (Elf_External_Rel), asect->reloc_count, abfd);
if (!reloc_cache)
{
- bfd_error = no_memory;
+ bfd_set_error (bfd_error_no_memory);
return false;
}
/* 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_hdr = &elf_section_data (asect)->this_hdr;
data_off = data_hdr->sh_offset;
data_max = data_hdr->sh_size - sizeof (buf) + 1;
/* 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;
- {
- /* 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;
- s = *cache_ptr->sym_ptr_ptr;
- if (s->name == 0 || s->name[0] == 0)
- abort ();
- }
- }
+
+ /* ELF_R_SYM(dst.r_info) is the symbol table offset. An offset
+ of zero points to the dummy symbol, which was not read into
+ the symbol table SYMBOLS. */
+ if (ELF_R_SYM (dst.r_info) == 0)
+ cache_ptr->sym_ptr_ptr = bfd_abs_section.symbol_ptr_ptr;
+ else
+ {
+ asymbol *s;
+
+ cache_ptr->sym_ptr_ptr = symbols + ELF_R_SYM (dst.r_info) - 1;
+
+ /* Translate any ELF section symbol into a BFD section
+ symbol. */
+ s = *(cache_ptr->sym_ptr_ptr);
+ if (s->flags & BSF_SECTION_SYM)
+ {
+ cache_ptr->sym_ptr_ptr = s->section->symbol_ptr_ptr;
+ s = *cache_ptr->sym_ptr_ptr;
+ if (s->name == 0 || s->name[0] == 0)
+ abort ();
+ }
+ }
BFD_ASSERT (dst.r_offset <= data_max);
cache_ptr->addend = 0;
}
unsigned int
-DEFUN (elf_get_symtab, (abfd, alocation),
- bfd * abfd AND
- asymbol ** alocation)
+elf_get_symtab (abfd, alocation)
+ bfd *abfd;
+ asymbol **alocation;
{
if (!elf_slurp_symbol_table (abfd, alocation))
}
asymbol *
-DEFUN (elf_make_empty_symbol, (abfd),
- bfd * abfd)
+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;
+ bfd_set_error (bfd_error_no_memory);
return NULL;
}
else
}
void
-DEFUN (elf_get_symbol_info, (ignore_abfd, symbol, ret),
- bfd * ignore_abfd AND
- asymbol * symbol AND
- symbol_info * ret)
+elf_get_symbol_info (ignore_abfd, symbol, ret)
+ bfd *ignore_abfd;
+ asymbol *symbol;
+ symbol_info *ret;
{
bfd_symbol_info (symbol, ret);
}
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)
+elf_print_symbol (ignore_abfd, filep, symbol, how)
+ bfd *ignore_abfd;
+ PTR filep;
+ asymbol *symbol;
+ bfd_print_symbol_type how;
{
FILE *file = (FILE *) filep;
switch (how)
}
alent *
-DEFUN (elf_get_lineno, (ignore_abfd, symbol),
- bfd * ignore_abfd AND
- asymbol * symbol)
+elf_get_lineno (ignore_abfd, symbol)
+ bfd *ignore_abfd;
+ asymbol *symbol;
{
fprintf (stderr, "elf_get_lineno unimplemented\n");
fflush (stderr);
}
boolean
-DEFUN (elf_set_arch_mach, (abfd, arch, machine),
- bfd * abfd AND
- enum bfd_architecture arch AND
- unsigned long machine)
+elf_set_arch_mach (abfd, arch, machine)
+ bfd *abfd;
+ enum bfd_architecture arch;
+ unsigned long machine;
{
/* Allow any architecture to be supported by the elf backend */
switch (arch)
case bfd_arch_i860: /* EM_860 */
case bfd_arch_mips: /* EM_MIPS (MIPS R3000) */
case bfd_arch_hppa: /* EM_HPPA (HP PA_RISC) */
+ case bfd_arch_powerpc: /* EM_CYGNUS_POWERPC */
return bfd_default_set_arch_mach (abfd, arch, machine);
default:
return false;
}
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)
+elf_find_nearest_line (abfd,
+ section,
+ symbols,
+ offset,
+ filename_ptr,
+ functionname_ptr,
+ line_ptr)
+ bfd *abfd;
+ asection *section;
+ asymbol **symbols;
+ bfd_vma offset;
+ CONST char **filename_ptr;
+ CONST char **functionname_ptr;
+ unsigned int *line_ptr;
{
return false;
}
int
-DEFUN (elf_sizeof_headers, (abfd, reloc),
- bfd * abfd AND
- boolean reloc)
+elf_sizeof_headers (abfd, reloc)
+ bfd *abfd;
+ boolean reloc;
{
fprintf (stderr, "elf_sizeof_headers unimplemented\n");
fflush (stderr);
}
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)
+elf_set_section_contents (abfd, section, location, offset, count)
+ bfd *abfd;
+ sec_ptr section;
+ PTR location;
+ file_ptr offset;
+ bfd_size_type count;
{
Elf_Internal_Shdr *hdr;
if (abfd->output_has_begun == false) /* set by bfd.c handler? */
{
/* do setup calculations (FIXME) */
- prep_headers (abfd);
- elf_compute_section_file_positions (abfd);
+ if (prep_headers (abfd) == false)
+ return false;
+ if (elf_compute_section_file_positions (abfd) == false)
+ return false;
abfd->output_has_begun = true;
}
- hdr = &elf_section_data(section)->this_hdr;
+ hdr = &elf_section_data (section)->this_hdr;
if (bfd_seek (abfd, hdr->sh_offset + offset, SEEK_SET) == -1)
return false;
}
void
-DEFUN (elf_no_info_to_howto, (abfd, cache_ptr, dst),
- bfd * abfd AND
- arelent * cache_ptr AND
- Elf_Internal_Rela * dst)
+elf_no_info_to_howto (abfd, cache_ptr, dst)
+ bfd *abfd;
+ arelent *cache_ptr;
+ Elf_Internal_Rela *dst;
{
fprintf (stderr, "elf RELA relocation support for target machine unimplemented\n");
fflush (stderr);
}
void
-DEFUN (elf_no_info_to_howto_rel, (abfd, cache_ptr, dst),
- bfd * abfd AND
- arelent * cache_ptr AND
- Elf_Internal_Rel * dst)
+elf_no_info_to_howto_rel (abfd, cache_ptr, dst)
+ bfd *abfd;
+ arelent *cache_ptr;
+ Elf_Internal_Rel *dst;
{
fprintf (stderr, "elf REL relocation support for target machine unimplemented\n");
fflush (stderr);
BFD_FAIL ();
}
-
\f
+
/* Core file support */
#ifdef HAVE_PROCFS /* Some core file support requires host /proc files */
#ifdef HAVE_PROCFS
static void
-DEFUN (bfd_prstatus, (abfd, descdata, descsz, filepos),
- bfd * abfd AND
- char *descdata AND
- int descsz AND
- long filepos)
+bfd_prstatus (abfd, descdata, descsz, filepos)
+ bfd *abfd;
+ char *descdata;
+ int descsz;
+ long filepos;
{
asection *newsect;
prstatus_t *status = (prstatus_t *) 0;
/* 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_prpsinfo (abfd, descdata, descsz, filepos)
+ bfd *abfd;
+ char *descdata;
+ int descsz;
+ long filepos;
{
asection *newsect;
}
static void
-DEFUN (bfd_fpregset, (abfd, descdata, descsz, filepos),
- bfd * abfd AND
- char *descdata AND
- int descsz AND
- long filepos)
+bfd_fpregset (abfd, descdata, descsz, filepos)
+ bfd *abfd;
+ char *descdata;
+ int descsz;
+ long filepos;
{
asection *newsect;
it exists. */
char *
-DEFUN (elf_core_file_failing_command, (abfd),
- bfd * abfd)
+elf_core_file_failing_command (abfd)
+ bfd *abfd;
{
#ifdef HAVE_PROCFS
if (core_prpsinfo (abfd))
*/
int
-DEFUN (elf_core_file_failing_signal, (abfd),
- bfd * abfd)
+elf_core_file_failing_signal (abfd)
+ bfd *abfd;
{
#ifdef HAVE_PROCFS
if (core_prstatus (abfd))
*/
boolean
-DEFUN (elf_core_file_matches_executable_p, (core_bfd, exec_bfd),
- bfd * core_bfd AND
- bfd * exec_bfd)
+elf_core_file_matches_executable_p (core_bfd, exec_bfd)
+ bfd *core_bfd;
+ bfd *exec_bfd;
{
#ifdef HAVE_PROCFS
char *corename;
if (core_bfd->xvec != exec_bfd->xvec)
{
- bfd_error = system_call_error;
+ bfd_set_error (bfd_error_system_call);
return false;
}
*/
static boolean
-DEFUN (elf_corefile_note, (abfd, hdr),
- bfd * abfd AND
- Elf_Internal_Phdr * hdr)
+elf_corefile_note (abfd, hdr)
+ bfd *abfd;
+ Elf_Internal_Phdr *hdr;
{
Elf_External_Note *x_note_p; /* Elf note, external form */
Elf_Internal_Note i_note; /* Elf note, internal form */
asection *newsect;
if (hdr->p_filesz > 0
- && (buf = (char *) bfd_xmalloc (hdr->p_filesz)) != NULL
+ && (buf = (char *) malloc (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)
{
{
free (buf);
}
+ else if (hdr->p_filesz > 0)
+ {
+ bfd_set_error (bfd_error_no_memory);
+ return false;
+ }
return true;
}
*/
bfd_target *
-DEFUN (elf_core_file_p, (abfd), bfd * abfd)
+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;
+ struct elf_backend_data *ebd;
/* Read in the ELF header in external format. */
if (bfd_read ((PTR) & x_ehdr, sizeof (x_ehdr), 1, abfd) != sizeof (x_ehdr))
{
- bfd_error = system_call_error;
+ if (bfd_get_error () != bfd_error_system_call)
+ bfd_set_error (bfd_error_wrong_format);
return NULL;
}
if (elf_file_p (&x_ehdr) == false)
{
wrong:
- bfd_error = wrong_format;
+ bfd_set_error (bfd_error_wrong_format);
return NULL;
}
(struct elf_obj_tdata *) bfd_zalloc (abfd, sizeof (struct elf_obj_tdata));
if (elf_tdata (abfd) == NULL)
{
- bfd_error = no_memory;
+ bfd_set_error (bfd_error_no_memory);
return NULL;
}
elf_debug_file (i_ehdrp);
#endif
+ ebd = get_elf_backend_data (abfd);
+
+ /* Check that the ELF e_machine field matches what this particular
+ BFD format expects. */
+ if (ebd->elf_machine_code != i_ehdrp->e_machine)
+ {
+ bfd_target **target_ptr;
+
+ if (ebd->elf_machine_code != EM_NONE)
+ goto wrong;
+
+ /* This is the generic ELF target. Let it match any ELF target
+ for which we do not have a specific backend. */
+ for (target_ptr = bfd_target_vector; *target_ptr != NULL; target_ptr++)
+ {
+ struct elf_backend_data *back;
+
+ if ((*target_ptr)->flavour != bfd_target_elf_flavour)
+ continue;
+ back = (struct elf_backend_data *) (*target_ptr)->backend_data;
+ if (back->elf_machine_code == i_ehdrp->e_machine)
+ {
+ /* target_ptr is an ELF backend which matches this
+ object file, so reject the generic ELF target. */
+ goto wrong;
+ }
+ }
+ }
+
/* 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)
bfd_alloc (abfd, sizeof (*i_phdrp) * i_ehdrp->e_phnum);
if (!i_phdrp)
{
- bfd_error = no_memory;
+ bfd_set_error (bfd_error_no_memory);
return NULL;
}
if (bfd_seek (abfd, i_ehdrp->e_phoff, SEEK_SET) == -1)
- {
- bfd_error = system_call_error;
- return NULL;
- }
+ 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;
- }
+ return NULL;
elf_swap_phdr_in (abfd, &x_phdr, i_phdrp + phindex);
}
projects / deliverable / binutils-gdb.git / blobdiff