-/* ELF support for BFD.
- Copyright (C) 1991 Free Software Foundation, Inc.
-
- Written by Fred Fish @ Cygnus Support, from information published
- in "UNIX System V Release 4, Programmers Guide: ANSI C and
- Programming Support Tools".
+/* ELF executable support for BFD.
+ Copyright 1993 Free Software Foundation, Inc.
This file is part of BFD, the Binary File Descriptor library.
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
+/*
- /****************************************
-
- WARNING
-
- This is only a partial ELF implementation,
- incorporating only those parts that are
- required to get gdb up and running. It is
- expected that it will be expanded to a full
- ELF implementation at some future date.
-
- Unimplemented stubs call abort() to ensure
- that they get proper attention if they are
- ever called. The stubs are here since
- this version was hacked from the COFF
- version, and thus they will probably
- go away or get expanded appropriately in a
- future version.
-
- fnf@cygnus.com
-
- *****************************************/
+SECTION
+ ELF backends
+ BFD support for ELF formats is being worked on.
+ Currently, the best supported back ends are for sparc and i386
+ (running svr4 or Solaris 2).
-/* Problems and other issues to resolve.
-
- (1) BFD expects there to be some fixed number of "sections" in
- the object file. I.E. there is a "section_count" variable in the
- bfd structure which contains the number of sections. However, ELF
- supports multiple "views" of a file. In particular, with current
- implementations, executable files typically have two tables, a
- program header table and a section header table, both of which
- partition the executable.
-
- In ELF-speak, the "linking view" of the file uses the section header
- table to access "sections" within the file, and the "execution view"
- uses the program header table to access "segments" within the file.
- "Segments" typically may contain all the data from one or more
- "sections".
-
- Note that the section header table is optional in ELF executables,
- but it is this information that is most useful to gdb. If the
- section header table is missing, then gdb should probably try
- to make do with the program header table. (FIXME)
-
-*/
+ Documentation of the internals of the support code still needs
+ to be written. The code is changing quickly enough that we
+ haven't bothered yet.
+ */
#include "bfd.h"
#include "sysdep.h"
+#include "bfdlink.h"
#include "libbfd.h"
-#include "obstack.h"
-#include "elf/common.h"
-#include "elf/internal.h"
-#include "elf/external.h"
-
-#ifdef HAVE_PROCFS /* Some core file support requires host /proc files */
-#include <sys/procfs.h>
-#else
-#define bfd_prstatus(abfd, descdata, descsz, filepos) /* Define away */
-#define bfd_fpregset(abfd, descdata, descsz, filepos) /* Define away */
-#define bfd_prpsinfo(abfd, descdata, descsz, filepos) /* Define away */
-#endif
-
-/* Forward data declarations */
-
-extern bfd_target elf_little_vec, elf_big_vec;
-
-/* Currently the elf_symbol_type struct just contains the generic bfd
- symbol structure. */
-
-typedef struct
-{
- asymbol symbol;
-} elf_symbol_type;
-
-/* Some private data is stashed away for future use using the tdata pointer
- in the bfd structure. This information is different for ELF core files
- and other ELF files. */
-
-typedef struct
-{
- void *prstatus; /* The raw /proc prstatus structure */
- void *prpsinfo; /* The raw /proc prpsinfo structure */
-} elf_core_tdata;
-
-#define core_prpsinfo(bfd) (((elf_core_tdata *)((bfd)->tdata))->prpsinfo)
-#define core_prstatus(bfd) (((elf_core_tdata *)((bfd)->tdata))->prstatus)
-
-typedef struct
-{
- file_ptr symtab_filepos; /* Offset to start of ELF symtab section */
- long symtab_filesz; /* Size of ELF symtab section */
- file_ptr strtab_filepos; /* Offset to start of ELF string tbl section */
- long strtab_filesz; /* Size of ELF string tbl section */
-} elf_obj_tdata;
-
-#define elf_tdata(bfd) ((elf_obj_tdata *) ((bfd) -> tdata))
-#define elf_symtab_filepos(bfd) (elf_tdata(bfd) -> symtab_filepos)
-#define elf_symtab_filesz(bfd) (elf_tdata(bfd) -> symtab_filesz)
-#define elf_strtab_filepos(bfd) (elf_tdata(bfd) -> strtab_filepos)
-#define elf_strtab_filesz(bfd) (elf_tdata(bfd) -> strtab_filesz)
-
-/* Translate an ELF symbol in external format into an ELF symbol in internal
- format. */
-
-static void
-DEFUN(elf_swap_symbol_in,(abfd, src, dst),
- bfd *abfd AND
- Elf_External_Sym *src AND
- Elf_Internal_Sym *dst)
-{
- dst -> st_name = bfd_h_get_32 (abfd, (bfd_byte *) src -> st_name);
- dst -> st_value = bfd_h_get_32 (abfd, (bfd_byte *) src -> st_value);
- dst -> st_size = bfd_h_get_32 (abfd, (bfd_byte *) src -> st_size);
- dst -> st_info = bfd_h_get_8 (abfd, (bfd_byte *) src -> st_info);
- dst -> st_other = bfd_h_get_8 (abfd, (bfd_byte *) src -> st_other);
- dst -> st_shndx = bfd_h_get_16 (abfd, (bfd_byte *) src -> st_shndx);
-}
-
-
-/* Translate an ELF file header in external format into an ELF file header in
- internal format. */
-
-static void
-DEFUN(elf_swap_ehdr_in,(abfd, src, dst),
- bfd *abfd AND
- Elf_External_Ehdr *src AND
- Elf_Internal_Ehdr *dst)
-{
- bcopy (src -> e_ident, dst -> e_ident, EI_NIDENT);
- dst -> e_type = bfd_h_get_16 (abfd, (bfd_byte *) src -> e_type);
- dst -> e_machine = bfd_h_get_16 (abfd, (bfd_byte *) src -> e_machine);
- dst -> e_version = bfd_h_get_32 (abfd, (bfd_byte *) src -> e_version);
- dst -> e_entry = bfd_h_get_32 (abfd, (bfd_byte *) src -> e_entry);
- dst -> e_phoff = bfd_h_get_32 (abfd, (bfd_byte *) src -> e_phoff);
- dst -> e_shoff = bfd_h_get_32 (abfd, (bfd_byte *) src -> e_shoff);
- dst -> e_flags = bfd_h_get_32 (abfd, (bfd_byte *) src -> e_flags);
- dst -> e_ehsize = bfd_h_get_16 (abfd, (bfd_byte *) src -> e_ehsize);
- dst -> e_phentsize = bfd_h_get_16 (abfd, (bfd_byte *) src -> e_phentsize);
- dst -> e_phnum = bfd_h_get_16 (abfd, (bfd_byte *) src -> e_phnum);
- dst -> e_shentsize = bfd_h_get_16 (abfd, (bfd_byte *) src -> e_shentsize);
- dst -> e_shnum = bfd_h_get_16 (abfd, (bfd_byte *) src -> e_shnum);
- dst -> e_shstrndx = bfd_h_get_16 (abfd, (bfd_byte *) src -> e_shstrndx);
-}
-
-
-/* Translate an ELF section header table entry in external format into an
- 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)
-{
- 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);
- dst -> sh_flags = bfd_h_get_32 (abfd, (bfd_byte *) src -> sh_flags);
- dst -> sh_addr = bfd_h_get_32 (abfd, (bfd_byte *) src -> sh_addr);
- dst -> sh_offset = bfd_h_get_32 (abfd, (bfd_byte *) src -> sh_offset);
- dst -> sh_size = bfd_h_get_32 (abfd, (bfd_byte *) src -> sh_size);
- dst -> sh_link = bfd_h_get_32 (abfd, (bfd_byte *) src -> sh_link);
- dst -> sh_info = bfd_h_get_32 (abfd, (bfd_byte *) src -> sh_info);
- dst -> sh_addralign = bfd_h_get_32 (abfd, (bfd_byte *) src -> sh_addralign);
- dst -> sh_entsize = bfd_h_get_32 (abfd, (bfd_byte *) src -> sh_entsize);
-}
-
-
-/* Translate an ELF program header table entry in external format into an
- ELF program header table entry in internal format. */
+#define ARCH_SIZE 0
+#include "libelf.h"
-static void
-DEFUN(elf_swap_phdr_in,(abfd, src, dst),
- bfd *abfd AND
- Elf_External_Phdr *src AND
- Elf_Internal_Phdr *dst)
+/* Standard ELF hash function. Do not change this function; you will
+ cause invalid hash tables to be generated. (Well, you would if this
+ were being used yet.) */
+unsigned long
+bfd_elf_hash (name)
+ CONST unsigned char *name;
{
- dst -> p_type = bfd_h_get_32 (abfd, (bfd_byte *) src -> p_type);
- dst -> p_offset = bfd_h_get_32 (abfd, (bfd_byte *) src -> p_offset);
- dst -> p_vaddr = bfd_h_get_32 (abfd, (bfd_byte *) src -> p_vaddr);
- dst -> p_paddr = bfd_h_get_32 (abfd, (bfd_byte *) src -> p_paddr);
- dst -> p_filesz = bfd_h_get_32 (abfd, (bfd_byte *) src -> p_filesz);
- dst -> p_memsz = bfd_h_get_32 (abfd, (bfd_byte *) src -> p_memsz);
- dst -> p_flags = bfd_h_get_32 (abfd, (bfd_byte *) src -> p_flags);
- dst -> p_align = bfd_h_get_32 (abfd, (bfd_byte *) src -> p_align);
-}
-
-
-/* Create a new bfd section from an ELF section header. */
-
-static boolean
-DEFUN(bfd_section_from_shdr, (abfd, hdr, shstrtab),
- bfd *abfd AND
- Elf_Internal_Shdr *hdr AND
- char *shstrtab)
-{
- asection *newsect;
- char *name;
+ unsigned long h = 0;
+ unsigned long g;
+ int ch;
- name = hdr -> sh_name ? shstrtab + hdr -> sh_name : "unnamed";
- newsect = bfd_make_section (abfd, name);
- newsect -> vma = hdr -> sh_addr;
- newsect -> size = hdr -> sh_size;
- if (!(hdr -> sh_type == SHT_NOBITS))
+ while ((ch = *name++) != '\0')
{
- newsect -> filepos = hdr -> sh_offset;
- newsect -> flags |= SEC_HAS_CONTENTS;
- }
- if (hdr -> sh_flags & SHF_ALLOC)
- {
- newsect -> flags |= SEC_ALLOC;
- if (hdr -> sh_type != SHT_NOBITS)
+ h = (h << 4) + ch;
+ if ((g = (h & 0xf0000000)) != 0)
{
- newsect -> flags |= SEC_LOAD;
+ h ^= g >> 24;
+ h &= ~g;
}
}
- if (!(hdr -> sh_flags & SHF_WRITE))
- {
- newsect -> flags |= SEC_READONLY;
- }
- if (hdr -> sh_flags & SHF_EXECINSTR)
- {
- newsect -> flags |= SEC_CODE; /* FIXME: may only contain SOME code */
- }
- else
- {
- newsect -> flags |= SEC_DATA;
- }
- if (hdr -> sh_type == SHT_SYMTAB)
- {
- abfd -> flags |= HAS_SYMS;
- }
-
- return (true);
+ return h;
}
-/* Create a new bfd section from an ELF program header.
-
- Since program segments have no names, we generate a synthetic name
- of the form segment<NUM>, where NUM is generally the index in the
- program header table. For segments that are split (see below) we
- generate the names segment<NUM>a and segment<NUM>b.
-
- Note that some program segments may have a file size that is different than
- (less than) the memory size. All this means is that at execution the
- system must allocate the amount of memory specified by the memory size,
- but only initialize it with the first "file size" bytes read from the
- file. This would occur for example, with program segments consisting
- of combined data+bss.
-
- To handle the above situation, this routine generates TWO bfd sections
- for the single program segment. The first has the length specified by
- the file size of the segment, and the second has the length specified
- by the difference between the two sizes. In effect, the segment is split
- into it's initialized and uninitialized parts.
-
- */
+/* Read a specified number of bytes at a specified offset in an ELF
+ file, into a newly allocated buffer, and return a pointer to the
+ buffer. */
-static boolean
-DEFUN(bfd_section_from_phdr, (abfd, hdr, index),
- bfd *abfd AND
- Elf_Internal_Phdr *hdr AND
- int index)
+static char *
+elf_read (abfd, offset, size)
+ bfd * abfd;
+ long offset;
+ int size;
{
- asection *newsect;
- char *name;
- char namebuf[64];
- int split;
-
- split = ((hdr -> p_memsz > 0) &&
- (hdr -> p_filesz > 0) &&
- (hdr -> p_memsz > hdr -> p_filesz));
- sprintf (namebuf, split ? "segment%da" : "segment%d", index);
- name = bfd_alloc (abfd, strlen (namebuf) + 1);
- (void) strcpy (name, namebuf);
- newsect = bfd_make_section (abfd, name);
- newsect -> vma = hdr -> p_vaddr;
- newsect -> size = hdr -> p_filesz;
- newsect -> filepos = hdr -> p_offset;
- newsect -> flags |= SEC_HAS_CONTENTS;
- if (hdr -> p_type == PT_LOAD)
- {
- newsect -> flags |= SEC_ALLOC;
- newsect -> flags |= SEC_LOAD;
- if (hdr -> p_flags & PF_X)
- {
- /* FIXME: all we known is that it has execute PERMISSION,
- may be data. */
- newsect -> flags |= SEC_CODE;
- }
- }
- if (!(hdr -> p_flags & PF_W))
- {
- newsect -> flags |= SEC_READONLY;
- }
+ char *buf;
- if (split)
+ if ((buf = bfd_alloc (abfd, size)) == NULL)
{
- sprintf (namebuf, "segment%db", index);
- name = bfd_alloc (abfd, strlen (namebuf) + 1);
- (void) strcpy (name, namebuf);
- newsect = bfd_make_section (abfd, name);
- newsect -> vma = hdr -> p_vaddr + hdr -> p_filesz;
- newsect -> size = hdr -> p_memsz - hdr -> p_filesz;
- if (hdr -> p_type == PT_LOAD)
- {
- newsect -> flags |= SEC_ALLOC;
- if (hdr -> p_flags & PF_X)
- {
- newsect -> flags |= SEC_CODE;
- }
- }
- if (!(hdr -> p_flags & PF_W))
- {
- newsect -> flags |= SEC_READONLY;
- }
+ bfd_set_error (bfd_error_no_memory);
+ return NULL;
}
-
- return (true);
-}
-
-#ifdef HAVE_PROCFS
-
-static void
-DEFUN(bfd_prstatus,(abfd, descdata, descsz, filepos),
- bfd *abfd AND
- char *descdata AND
- int descsz AND
- long filepos)
-{
- asection *newsect;
-
- if (descsz == sizeof (prstatus_t))
+ if (bfd_seek (abfd, offset, SEEK_SET) == -1)
+ return NULL;
+ if (bfd_read ((PTR) buf, size, 1, abfd) != size)
{
- newsect = bfd_make_section (abfd, ".reg");
- newsect -> size = sizeof (gregset_t);
- newsect -> filepos = filepos + (long) (((prstatus_t *)0) -> pr_reg);
- newsect -> flags = SEC_ALLOC | SEC_HAS_CONTENTS;
- newsect -> alignment_power = 2;
- if ((core_prstatus (abfd) = bfd_alloc (abfd, descsz)) != NULL)
- {
- bcopy (descdata, core_prstatus (abfd), descsz);
- }
+ if (bfd_get_error () != bfd_error_system_call)
+ bfd_set_error (bfd_error_file_truncated);
+ return NULL;
}
+ return buf;
}
-/* 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)
+boolean
+elf_mkobject (abfd)
+ bfd * abfd;
{
- asection *newsect;
-
- if (descsz == sizeof (prpsinfo_t))
+ /* this just does initialization */
+ /* coff_mkobject zalloc's space for tdata.coff_obj_data ... */
+ elf_tdata (abfd) = (struct elf_obj_tdata *)
+ bfd_zalloc (abfd, sizeof (struct elf_obj_tdata));
+ if (elf_tdata (abfd) == 0)
{
- if ((core_prpsinfo (abfd) = bfd_alloc (abfd, descsz)) != NULL)
- {
- bcopy (descdata, core_prpsinfo (abfd), descsz);
- }
+ bfd_set_error (bfd_error_no_memory);
+ return false;
}
-}
-
-static void
-DEFUN(bfd_fpregset,(abfd, descdata, descsz, filepos),
- bfd *abfd AND
- char *descdata AND
- int descsz AND
- long filepos)
-{
- asection *newsect;
+ /* since everything is done at close time, do we need any
+ initialization? */
- if (descsz == sizeof (fpregset_t))
- {
- newsect = bfd_make_section (abfd, ".reg2");
- newsect -> size = sizeof (fpregset_t);
- newsect -> filepos = filepos;
- newsect -> flags = SEC_ALLOC | SEC_HAS_CONTENTS;
- newsect -> alignment_power = 2;
- }
+ return true;
}
-#endif /* HAVE_PROCFS */
-
-/* Return a pointer to the args (including the command name) that were
- seen by the program that generated the core dump. Note that for
- some reason, a spurious space is tacked onto the end of the args
- in some (at least one anyway) implementations, so strip it off if
- it exists. */
-
char *
-DEFUN(elf_core_file_failing_command, (abfd),
- bfd *abfd)
+elf_get_str_section (abfd, shindex)
+ bfd * abfd;
+ unsigned int shindex;
{
-#if HAVE_PROCFS
- if (core_prpsinfo (abfd))
- {
- prpsinfo_t *p = core_prpsinfo (abfd);
- char *scan = p -> pr_psargs;
- while (*scan++) {;}
- scan -= 2;
- if ((scan > p -> pr_psargs) && (*scan == ' '))
- {
- *scan = '\000';
- }
- return (p -> pr_psargs);
- }
-#endif
- return (NULL);
-}
+ Elf_Internal_Shdr **i_shdrp;
+ char *shstrtab = NULL;
+ unsigned int offset;
+ unsigned int shstrtabsize;
-/* Return the number of the signal that caused the core dump. Presumably,
- since we have a core file, we got a signal of some kind, so don't bother
- checking the other process status fields, just return the signal number.
- */
+ i_shdrp = elf_elfsections (abfd);
+ if (i_shdrp == 0 || i_shdrp[shindex] == 0)
+ return 0;
-static int
-DEFUN(elf_core_file_failing_signal, (abfd),
- bfd *abfd)
-{
-#if HAVE_PROCFS
- if (core_prstatus (abfd))
+ shstrtab = i_shdrp[shindex]->rawdata;
+ if (shstrtab == NULL)
{
- return (((prstatus_t *)(core_prstatus (abfd))) -> pr_cursig);
+ /* No cached one, attempt to read, and cache what we read. */
+ offset = i_shdrp[shindex]->sh_offset;
+ shstrtabsize = i_shdrp[shindex]->sh_size;
+ shstrtab = elf_read (abfd, offset, shstrtabsize);
+ i_shdrp[shindex]->rawdata = (void *) shstrtab;
}
-#endif
- return (-1);
+ return shstrtab;
}
-/* Check to see if the core file could reasonably be expected to have
- come for the current executable file. Note that by default we return
- true unless we find something that indicates that there might be a
- problem.
- */
-
-static boolean
-DEFUN(elf_core_file_matches_executable_p, (core_bfd, exec_bfd),
- bfd *core_bfd AND
- bfd *exec_bfd)
+char *
+elf_string_from_elf_section (abfd, shindex, strindex)
+ bfd * abfd;
+ unsigned int shindex;
+ unsigned int strindex;
{
-#if HAVE_PROCFS
- char *corename;
- char *execname;
-#endif
-
- /* First, xvecs must match since both are ELF files for the same target. */
-
- if (core_bfd->xvec != exec_bfd->xvec)
- {
- bfd_error = system_call_error;
- return (false);
- }
-
-#if HAVE_PROCFS
-
- /* If no prpsinfo, just return true. Otherwise, grab the last component
- of the exec'd pathname from the prpsinfo. */
-
- if (core_prpsinfo (core_bfd))
- {
- corename = (((struct prpsinfo *) core_prpsinfo (core_bfd)) -> pr_fname);
- }
- else
- {
- return (true);
- }
+ Elf_Internal_Shdr *hdr;
- /* Find the last component of the executable pathname. */
+ if (strindex == 0)
+ return "";
- if ((execname = strrchr (exec_bfd -> filename, '/')) != NULL)
- {
- execname++;
- }
- else
- {
- execname = (char *) exec_bfd -> filename;
- }
-
- /* See if they match */
-
- return (strcmp (execname, corename) ? false : true);
+ hdr = elf_elfsections (abfd)[shindex];
-#else
+ if (!hdr->rawdata
+ && elf_get_str_section (abfd, shindex) == NULL)
+ return NULL;
- return (true);
-
-#endif /* HAVE_PROCFS */
+ return ((char *) hdr->rawdata) + strindex;
}
-/* ELF core files contain a segment of type PT_NOTE, that holds much of
- the information that would normally be available from the /proc interface
- for the process, at the time the process dumped core. Currently this
- includes copies of the prstatus, prpsinfo, and fpregset structures.
-
- Since these structures are potentially machine dependent in size and
- ordering, bfd provides two levels of support for them. The first level,
- available on all machines since it does not require that the host
- have /proc support or the relevant include files, is to create a bfd
- section for each of the prstatus, prpsinfo, and fpregset structures,
- without any interpretation of their contents. With just this support,
- the bfd client will have to interpret the structures itself. Even with
- /proc support, it might want these full structures for it's own reasons.
-
- In the second level of support, where HAVE_PROCFS is defined, bfd will
- pick apart the structures to gather some additional information that
- clients may want, such as the general register set, the name of the
- exec'ed file and its arguments, the signal (if any) that caused the
- core dump, etc.
+/* Make a BFD section from an ELF section. We store a pointer to the
+ BFD section in the rawdata field of the header. */
- */
-
-static boolean
-DEFUN(elf_corefile_note, (abfd, hdr),
- bfd *abfd AND
- Elf_Internal_Phdr *hdr)
+boolean
+_bfd_elf_make_section_from_shdr (abfd, hdr, name)
+ bfd *abfd;
+ Elf_Internal_Shdr *hdr;
+ const char *name;
{
- Elf_External_Note *x_note_p; /* Elf note, external form */
- Elf_Internal_Note i_note; /* Elf note, internal form */
- char *buf = NULL; /* Entire note segment contents */
- char *namedata; /* Name portion of the note */
- char *descdata; /* Descriptor portion of the note */
- char *sectname; /* Name to use for new section */
- long filepos; /* File offset to descriptor data */
asection *newsect;
+ flagword flags;
- if (hdr -> p_filesz > 0
- && (buf = (char *)malloc(hdr -> p_filesz)) != NULL
- && bfd_seek (abfd, hdr -> p_offset, SEEK_SET) != -1L
- && bfd_read ((PTR) buf, hdr -> p_filesz, 1, abfd) == hdr -> p_filesz)
- {
- x_note_p = (Elf_External_Note *) buf;
- while ((char *) x_note_p < (buf + hdr -> p_filesz))
- {
- i_note.namesz = bfd_h_get_32 (abfd, (bfd_byte *) x_note_p -> namesz);
- i_note.descsz = bfd_h_get_32 (abfd, (bfd_byte *) x_note_p -> descsz);
- i_note.type = bfd_h_get_32 (abfd, (bfd_byte *) x_note_p -> type);
- namedata = x_note_p -> name;
- descdata = namedata + BFD_ALIGN (i_note.namesz, 4);
- filepos = hdr -> p_offset + (descdata - buf);
- switch (i_note.type) {
- case NT_PRSTATUS:
- /* process descdata as prstatus info */
- bfd_prstatus (abfd, descdata, i_note.descsz, filepos);
- sectname = ".prstatus";
- break;
- case NT_FPREGSET:
- /* process descdata as fpregset info */
- bfd_fpregset (abfd, descdata, i_note.descsz, filepos);
- sectname = ".fpregset";
- break;
- case NT_PRPSINFO:
- /* process descdata as prpsinfo */
- bfd_prpsinfo (abfd, descdata, i_note.descsz, filepos);
- sectname = ".prpsinfo";
- break;
- default:
- /* Unknown descriptor, just ignore it. */
- sectname = NULL;
- break;
- }
- if (sectname != NULL)
- {
- newsect = bfd_make_section (abfd, sectname);
- newsect -> size = i_note.descsz;
- newsect -> filepos = filepos;
- newsect -> flags = SEC_ALLOC | SEC_HAS_CONTENTS;
- newsect -> alignment_power = 2;
- }
- x_note_p = (Elf_External_Note *)
- (descdata + BFD_ALIGN (i_note.descsz, 4));
- }
- }
- if (buf != NULL)
- {
- free (buf);
- }
- return true;
-
-}
-
-
-/* Read a specified number of bytes at a specified offset in an ELF
- file, into a newly allocated buffer, and return a pointer to the
- buffer. */
-
-static char *
-DEFUN(elf_read, (abfd, offset, size),
- bfd *abfd AND
- long offset AND
- int size)
-{
- char *buf;
-
- if ((buf = bfd_alloc (abfd, size)) == NULL)
- {
- bfd_error = no_memory;
- return (NULL);
- }
- if (bfd_seek (abfd, offset, SEEK_SET) == -1)
- {
- bfd_error = system_call_error;
- return (NULL);
- }
- if (bfd_read ((PTR) buf, size, 1, abfd) != size)
- {
- bfd_error = system_call_error;
- return (NULL);
- }
- return (buf);
-}
-
-/* Begin processing a given object.
-
- First we validate the file by reading in the ELF header and checking
- the magic number.
-
- */
-
-static bfd_target *
-DEFUN (elf_object_p, (abfd), bfd *abfd)
-{
- Elf_External_Ehdr x_ehdr; /* Elf file header, external form */
- Elf_Internal_Ehdr i_ehdr; /* Elf file header, internal form */
- Elf_External_Shdr *x_shdr; /* Section header table, external form */
- Elf_Internal_Shdr *i_shdr; /* Section header table, internal form */
- int shindex;
- char *shstrtab; /* Internal copy of section header stringtab */
- int shstrtabsize; /* Size of section header string table */
- Elf_Off offset; /* Temp place to stash file offsets */
-
- /* 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;
- return (NULL);
- }
-
- /* Now check to see if we have a valid ELF file, and one that BFD can
- make use of. The magic number must match, the address size ('class')
- and byte-swapping must match our XVEC entry, and it must have a
- section header table (FIXME: See comments re sections at top of this
- file). */
-
- if (x_ehdr.e_ident[EI_MAG0] != ELFMAG0 ||
- x_ehdr.e_ident[EI_MAG1] != ELFMAG1 ||
- x_ehdr.e_ident[EI_MAG2] != ELFMAG2 ||
- x_ehdr.e_ident[EI_MAG3] != ELFMAG3)
+ if (hdr->rawdata != NULL)
{
-wrong:
- bfd_error = wrong_format;
- return (NULL);
+ BFD_ASSERT (strcmp (name, ((asection *) hdr->rawdata)->name) == 0);
+ return true;
}
- /* FIXME, Check EI_VERSION here ! */
-
- switch (x_ehdr.e_ident[EI_CLASS]) {
- case ELFCLASSNONE: /* address size not specified */
- goto wrong; /* No support if can't tell address size */
- case ELFCLASS32: /* 32-bit addresses */
- break;
- case ELFCLASS64: /* 64-bit addresses */
- goto wrong; /* FIXME: 64 bits not yet supported */
- default:
- goto wrong; /* No support if unknown address class */
- }
-
- /* Switch xvec to match the specified byte order. */
- switch (x_ehdr.e_ident[EI_DATA]) {
- case ELFDATA2MSB: /* Big-endian */
- abfd->xvec = &elf_big_vec;
- break;
- case ELFDATA2LSB: /* Little-endian */
- abfd->xvec = &elf_little_vec;
- break;
- case ELFDATANONE: /* No data encoding specified */
- default: /* Unknown data encoding specified */
- goto wrong;
- }
-
- /* Allocate an instance of the elf_obj_tdata structure and hook it up to
- the tdata pointer in the bfd. */
-
- if ((abfd -> tdata = bfd_zalloc (abfd, sizeof (elf_obj_tdata))) == NULL)
- {
- bfd_error = no_memory;
- return (NULL);
- }
+ newsect = bfd_make_section_anyway (abfd, name);
+ if (newsect == NULL)
+ return false;
- /* Now that we know the byte order, swap in the rest of the header */
- elf_swap_ehdr_in (abfd, &x_ehdr, &i_ehdr);
+ newsect->filepos = hdr->sh_offset;
- /* If there is no section header table, we're hosed. */
- if (i_ehdr.e_shoff == 0)
- goto wrong;
+ if (! bfd_set_section_vma (abfd, newsect, hdr->sh_addr)
+ || ! bfd_set_section_size (abfd, newsect, hdr->sh_size)
+ || ! bfd_set_section_alignment (abfd, newsect,
+ bfd_log2 (hdr->sh_addralign)))
+ return false;
- if (i_ehdr.e_type == ET_EXEC || i_ehdr.e_type == ET_DYN)
+ flags = SEC_NO_FLAGS;
+ if (hdr->sh_type != SHT_NOBITS)
+ flags |= SEC_HAS_CONTENTS;
+ if ((hdr->sh_flags & SHF_ALLOC) != 0)
{
- abfd -> flags |= EXEC_P;
+ flags |= SEC_ALLOC;
+ if (hdr->sh_type != SHT_NOBITS)
+ flags |= SEC_LOAD;
}
+ if ((hdr->sh_flags & SHF_WRITE) == 0)
+ flags |= SEC_READONLY;
+ if ((hdr->sh_flags & SHF_EXECINSTR) != 0)
+ flags |= SEC_CODE;
+ else if ((flags & SEC_LOAD) != 0)
+ flags |= SEC_DATA;
- /* Allocate space for copies of the section header table in external
- and 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. */
+ /* The debugging sections appear to be recognized only by name, not
+ any sort of flag. */
+ if (strncmp (name, ".debug", sizeof ".debug" - 1) == 0
+ || strncmp (name, ".line", sizeof ".line" - 1) == 0
+ || strncmp (name, ".stab", sizeof ".stab" - 1) == 0)
+ flags |= SEC_DEBUGGING;
- if (i_ehdr.e_shentsize != sizeof (*x_shdr))
- goto wrong;
- if ((x_shdr = (Elf_External_Shdr *)
- bfd_alloc (abfd, sizeof (*x_shdr) * i_ehdr.e_shnum)) == NULL)
- {
- bfd_error = no_memory;
- return (NULL);
- }
- if ((i_shdr = (Elf_Internal_Shdr *)
- bfd_alloc (abfd, sizeof (*i_shdr) * i_ehdr.e_shnum)) == NULL)
- {
- bfd_error = no_memory;
- return (NULL);
- }
- if (bfd_seek (abfd, i_ehdr.e_shoff, SEEK_SET) == -1)
- {
- bfd_error = system_call_error;
- return (NULL);
- }
- for (shindex = 0; shindex < i_ehdr.e_shnum; shindex++)
- {
- if (bfd_read ((PTR) (x_shdr + shindex), sizeof (*x_shdr), 1, abfd)
- != sizeof (*x_shdr))
- {
- bfd_error = system_call_error;
- return (NULL);
- }
- elf_swap_shdr_in (abfd, x_shdr + shindex, i_shdr + shindex);
- }
+ if (! bfd_set_section_flags (abfd, newsect, flags))
+ return false;
- /* Read in the string table containing the names of the sections. We
- will need the base pointer to this table later. */
+ hdr->rawdata = (PTR) newsect;
+ elf_section_data (newsect)->this_hdr = *hdr;
- shstrtabsize = i_shdr[i_ehdr.e_shstrndx].sh_size;
- offset = i_shdr[i_ehdr.e_shstrndx].sh_offset;
- if ((shstrtab = elf_read (abfd, offset, shstrtabsize)) == NULL)
- {
- return (NULL);
- }
-
- /* Once all of the section headers have been read and converted, we
- can start processing them. Note that the first section header is
- a dummy placeholder entry, so we ignore it.
-
- We also watch for the symbol table section and remember the file
- offset and section size for both the symbol table section and the
- associated string table section. */
-
- for (shindex = 1; shindex < i_ehdr.e_shnum; shindex++)
- {
- Elf_Internal_Shdr *hdr = i_shdr + shindex;
- bfd_section_from_shdr (abfd, hdr, shstrtab);
- if (hdr -> sh_type == SHT_SYMTAB)
- {
- elf_symtab_filepos(abfd) = hdr -> sh_offset;
- elf_symtab_filesz(abfd) = hdr -> sh_size;
- elf_strtab_filepos(abfd) = (i_shdr + hdr -> sh_link) -> sh_offset;
- elf_strtab_filesz(abfd) = (i_shdr + hdr -> sh_link) -> sh_size;
- }
- }
-
- /* Remember the entry point specified in the ELF file header. */
-
- bfd_get_start_address (abfd) = i_ehdr.e_entry;
-
- return (abfd->xvec);
+ return true;
}
-/* Core files are simply standard ELF formatted files that partition
- the file using the execution view of the file (program header table)
- rather than the linking view. In fact, there is no section header
- table in a core file.
+/*
+INTERNAL_FUNCTION
+ bfd_elf_find_section
- The process status information (including the contents of the general
- register set) and the floating point register set are stored in a
- segment of type PT_NOTE. We handcraft a couple of extra bfd sections
- that allow standard bfd access to the general registers (.reg) and the
- floating point registers (.reg2).
+SYNOPSIS
+ struct elf_internal_shdr *bfd_elf_find_section (bfd *abfd, char *name);
- */
+DESCRIPTION
+ Helper functions for GDB to locate the string tables.
+ Since BFD hides string tables from callers, GDB needs to use an
+ internal hook to find them. Sun's .stabstr, in particular,
+ isn't even pointed to by the .stab section, so ordinary
+ mechanisms wouldn't work to find it, even if we had some.
+*/
-static bfd_target *
-DEFUN (elf_core_file_p, (abfd), bfd *abfd)
+struct elf_internal_shdr *
+bfd_elf_find_section (abfd, name)
+ bfd * abfd;
+ char *name;
{
- Elf_External_Ehdr x_ehdr; /* Elf file header, external form */
- Elf_Internal_Ehdr i_ehdr; /* Elf file header, internal form */
- Elf_External_Phdr *x_phdr; /* Program header table, external form */
- Elf_Internal_Phdr *i_phdr; /* Program header table, internal form */
- int phindex;
-
- /* 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;
- return (NULL);
- }
-
- /* Now check to see if we have a valid ELF file, and one that BFD can
- make use of. The magic number must match, the address size ('class')
- and byte-swapping must match our XVEC entry, and it must have a
- program header table (FIXME: See comments re segments at top of this
- file). */
-
- if (x_ehdr.e_ident[EI_MAG0] != ELFMAG0 ||
- x_ehdr.e_ident[EI_MAG1] != ELFMAG1 ||
- x_ehdr.e_ident[EI_MAG2] != ELFMAG2 ||
- x_ehdr.e_ident[EI_MAG3] != ELFMAG3)
- {
-wrong:
- bfd_error = wrong_format;
- return (NULL);
- }
-
- /* FIXME, Check EI_VERSION here ! */
-
- switch (x_ehdr.e_ident[EI_CLASS]) {
- case ELFCLASSNONE: /* address size not specified */
- goto wrong; /* No support if can't tell address size */
- case ELFCLASS32: /* 32-bit addresses */
- break;
- case ELFCLASS64: /* 64-bit addresses */
- goto wrong; /* FIXME: 64 bits not yet supported */
- default:
- goto wrong; /* No support if unknown address class */
- }
-
- /* Switch xvec to match the specified byte order. */
- switch (x_ehdr.e_ident[EI_DATA]) {
- case ELFDATA2MSB: /* Big-endian */
- abfd->xvec = &elf_big_vec;
- break;
- case ELFDATA2LSB: /* Little-endian */
- abfd->xvec = &elf_little_vec;
- break;
- case ELFDATANONE: /* No data encoding specified */
- default: /* Unknown data encoding specified */
- goto wrong;
- }
-
- /* Now that we know the byte order, swap in the rest of the header */
- elf_swap_ehdr_in (abfd, &x_ehdr, &i_ehdr);
-
- /* If there is no program header, or the type is not a core file, then
- we are hosed. */
- if (i_ehdr.e_phoff == 0 || i_ehdr.e_type != ET_CORE)
- goto wrong;
-
- /* Allocate an instance of the elf_core_tdata structure and hook it up to
- the tdata pointer in the bfd. */
-
- if ((abfd -> tdata = bfd_zalloc (abfd, sizeof (elf_core_tdata))) == NULL)
- {
- bfd_error = no_memory;
- return (NULL);
- }
-
- /* Allocate space for copies of the program header table in external
- and internal form, seek to the program header table in the file,
- read it in, and convert it to internal form. As a simple sanity
- check, verify that the what BFD thinks is the size of each program
- header table entry actually matches the size recorded in the file. */
+ Elf_Internal_Shdr **i_shdrp;
+ char *shstrtab;
+ unsigned int max;
+ unsigned int i;
- if (i_ehdr.e_phentsize != sizeof (*x_phdr))
- goto wrong;
- if ((x_phdr = (Elf_External_Phdr *)
- bfd_alloc (abfd, sizeof (*x_phdr) * i_ehdr.e_phnum)) == NULL)
+ i_shdrp = elf_elfsections (abfd);
+ if (i_shdrp != NULL)
{
- bfd_error = no_memory;
- return (NULL);
- }
- if ((i_phdr = (Elf_Internal_Phdr *)
- bfd_alloc (abfd, sizeof (*i_phdr) * i_ehdr.e_phnum)) == NULL)
- {
- bfd_error = no_memory;
- return (NULL);
- }
- if (bfd_seek (abfd, i_ehdr.e_phoff, SEEK_SET) == -1)
- {
- bfd_error = system_call_error;
- return (NULL);
- }
- for (phindex = 0; phindex < i_ehdr.e_phnum; phindex++)
- {
- if (bfd_read ((PTR) (x_phdr + phindex), sizeof (*x_phdr), 1, abfd)
- != sizeof (*x_phdr))
+ shstrtab = elf_get_str_section (abfd, elf_elfheader (abfd)->e_shstrndx);
+ if (shstrtab != NULL)
{
- bfd_error = system_call_error;
- return (NULL);
+ max = elf_elfheader (abfd)->e_shnum;
+ for (i = 1; i < max; i++)
+ if (!strcmp (&shstrtab[i_shdrp[i]->sh_name], name))
+ return i_shdrp[i];
}
- elf_swap_phdr_in (abfd, x_phdr + phindex, i_phdr + phindex);
}
-
- /* Once all of the program headers have been read and converted, we
- can start processing them. */
-
- for (phindex = 0; phindex < i_ehdr.e_phnum; phindex++)
- {
- bfd_section_from_phdr (abfd, i_phdr + phindex, phindex);
- if ((i_phdr + phindex) -> p_type == PT_NOTE)
- {
- elf_corefile_note (abfd, i_phdr + phindex);
- }
- }
-
- /* Remember the entry point specified in the ELF file header. */
-
- bfd_get_start_address (abfd) = i_ehdr.e_entry;
-
- return (abfd->xvec);
-}
-
-static boolean
-DEFUN (elf_mkobject, (abfd), bfd *abfd)
-{
- fprintf (stderr, "elf_mkobject unimplemented\n");
- fflush (stderr);
- abort ();
- return (false);
-}
-
-static boolean
-DEFUN (elf_write_object_contents, (abfd), bfd *abfd)
-{
- fprintf (stderr, "elf_write_object_contents unimplemented\n");
- fflush (stderr);
- abort ();
- return (false);
+ return 0;
}
-/* Given an index of a section, retrieve a pointer to it. Note
- that for our purposes, sections are indexed by {1, 2, ...} with
- 0 being an illegal index. */
+const char *const bfd_elf_section_type_names[] = {
+ "SHT_NULL", "SHT_PROGBITS", "SHT_SYMTAB", "SHT_STRTAB",
+ "SHT_RELA", "SHT_HASH", "SHT_DYNAMIC", "SHT_NOTE",
+ "SHT_NOBITS", "SHT_REL", "SHT_SHLIB", "SHT_DYNSYM",
+};
-static struct sec *
-DEFUN (section_from_bfd_index, (abfd, index),
- bfd *abfd AND
- int index)
-{
- if (index > 0)
- {
- struct sec *answer = abfd -> sections;
- while (--index > 0)
- {
- answer = answer -> next;
- }
- return (answer);
- }
- return (NULL);
+/* ELF relocs are against symbols. If we are producing relocateable
+ output, and the reloc is against an external symbol, and nothing
+ has given us any additional addend, the resulting reloc will also
+ be against the same symbol. In such a case, we don't want to
+ change anything about the way the reloc is handled, since it will
+ all be done at final link time. Rather than put special case code
+ into bfd_perform_relocation, all the reloc types use this howto
+ function. It just short circuits the reloc if producing
+ relocateable output against an external symbol. */
+
+/*ARGSUSED*/
+bfd_reloc_status_type
+bfd_elf_generic_reloc (abfd,
+ reloc_entry,
+ symbol,
+ data,
+ input_section,
+ output_bfd,
+ error_message)
+ bfd *abfd;
+ arelent *reloc_entry;
+ asymbol *symbol;
+ PTR data;
+ asection *input_section;
+ bfd *output_bfd;
+ char **error_message;
+{
+ if (output_bfd != (bfd *) NULL
+ && (symbol->flags & BSF_SECTION_SYM) == 0
+ && (! reloc_entry->howto->partial_inplace
+ || reloc_entry->addend == 0))
+ {
+ reloc_entry->address += input_section->output_offset;
+ return bfd_reloc_ok;
+ }
+
+ return bfd_reloc_continue;
}
+\f
+/* Create an entry in an ELF linker hash table. */
-static boolean
-DEFUN (elf_slurp_symbol_table, (abfd), bfd *abfd)
+struct bfd_hash_entry *
+_bfd_elf_link_hash_newfunc (entry, table, string)
+ struct bfd_hash_entry *entry;
+ struct bfd_hash_table *table;
+ const char *string;
{
- int symcount; /* Number of external ELF symbols */
- char *strtab; /* Buffer for raw ELF string table section */
- asymbol *sym; /* Pointer to current bfd symbol */
- asymbol *symbase; /* Buffer for generated bfd symbols */
- asymbol **vec; /* Pointer to current bfd symbol pointer */
- Elf_Internal_Sym i_sym;
- Elf_External_Sym x_sym;
-
- if (bfd_get_outsymbols (abfd) != NULL)
- {
- return (true);
- }
-
- /* Slurp in the string table. We will keep it around permanently, as
- long as the bfd is in use, since we will end up setting up pointers
- into it for the names of all the symbols. */
+ struct elf_link_hash_entry *ret = (struct elf_link_hash_entry *) entry;
- strtab = elf_read (abfd, elf_strtab_filepos(abfd), elf_strtab_filesz(abfd));
- if (strtab == NULL)
+ /* Allocate the structure if it has not already been allocated by a
+ subclass. */
+ if (ret == (struct elf_link_hash_entry *) NULL)
+ ret = ((struct elf_link_hash_entry *)
+ bfd_hash_allocate (table, sizeof (struct elf_link_hash_entry)));
+ if (ret == (struct elf_link_hash_entry *) NULL)
{
- return (false);
+ bfd_set_error (bfd_error_no_memory);
+ return (struct bfd_hash_entry *) ret;
}
- /* Read each raw ELF symbol, converting from external ELF form to
- internal ELF form, and then using the information to create a
- canonical bfd symbol table entry.
-
- Note that be allocate the initial bfd canonical symbol buffer
- based on a one-to-one mapping of the ELF symbols to canonical
- symbols. However, it is likely that not all the ELF symbols will
- be used, so there will be some space leftover at the end. Once
- we know how many symbols we actual generate, we realloc the buffer
- to the correct size and then build the pointer vector. */
-
- if (bfd_seek (abfd, elf_symtab_filepos (abfd), SEEK_SET) == -1)
+ /* Call the allocation method of the superclass. */
+ ret = ((struct elf_link_hash_entry *)
+ _bfd_link_hash_newfunc ((struct bfd_hash_entry *) ret,
+ table, string));
+ if (ret != (struct elf_link_hash_entry *) NULL)
{
- bfd_error = system_call_error;
- return (false);
+ /* Set local fields. */
+ ret->indx = -1;
+ ret->size = 0;
+ ret->dynindx = -1;
+ ret->dynstr_index = 0;
+ ret->weakdef = NULL;
+ ret->copy_offset = 0;
+ ret->type = STT_NOTYPE;
+ ret->elf_link_hash_flags = 0;
}
- symcount = elf_symtab_filesz(abfd) / sizeof (Elf_External_Sym);
- sym = symbase = (asymbol *) bfd_zalloc (abfd, symcount * sizeof (asymbol));
-
- while (symcount-- > 0)
- {
- if (bfd_read ((PTR) &x_sym, sizeof (x_sym), 1, abfd) != sizeof (x_sym))
- {
- bfd_error = system_call_error;
- return (false);
- }
- elf_swap_symbol_in (abfd, &x_sym, &i_sym);
- if (i_sym.st_name > 0)
- {
- sym -> the_bfd = abfd;
- sym -> name = strtab + i_sym.st_name;
- sym -> value = i_sym.st_value;
- if (i_sym.st_shndx > 0 && i_sym.st_shndx < SHN_LORESERV)
- {
- /* Note: This code depends upon there being an ordered
- one-for-one mapping of ELF sections to bfd sections. */
- sym -> section = section_from_bfd_index (abfd, i_sym.st_shndx);
- }
- else if (i_sym.st_shndx == SHN_ABS)
- {
- sym -> flags |= BSF_ABSOLUTE;
- }
- else if (i_sym.st_shndx == SHN_COMMON)
- {
- sym -> flags |= BSF_FORT_COMM;
- }
- switch (ELF_ST_BIND (i_sym.st_info))
- {
- case STB_LOCAL:
- sym -> flags |= BSF_LOCAL;
- break;
- case STB_GLOBAL:
- sym -> flags |= (BSF_GLOBAL | BSF_EXPORT);
- break;
- case STB_WEAK:
- sym -> flags |= BSF_WEAK;
- break;
- }
- sym++;
- }
- }
-
- bfd_get_symcount(abfd) = symcount = sym - symbase;
- sym = symbase = (asymbol *)
- bfd_realloc (abfd, symbase, symcount * sizeof (asymbol));
- bfd_get_outsymbols(abfd) = vec = (asymbol **)
- bfd_alloc (abfd, symcount * sizeof (asymbol *));
-
- while (symcount-- > 0)
- {
- *vec++ = sym++;
- }
-
- return (true);
+ return (struct bfd_hash_entry *) ret;
}
-/* Return the number of bytes required to hold the symtab vector.
-
- Note that we base it on the count plus 1, since we will null terminate
- the vector allocated based on this size. */
-
-static unsigned int
-DEFUN (elf_get_symtab_upper_bound, (abfd), bfd *abfd)
-{
- unsigned int symtab_size = 0;
-
- if (elf_slurp_symbol_table (abfd))
- {
- symtab_size = (bfd_get_symcount (abfd) + 1) * (sizeof (asymbol));
- }
- return (symtab_size);
+/* Initialize an ELF linker hash table. */
+
+boolean
+_bfd_elf_link_hash_table_init (table, abfd, newfunc)
+ struct elf_link_hash_table *table;
+ bfd *abfd;
+ struct bfd_hash_entry *(*newfunc) PARAMS ((struct bfd_hash_entry *,
+ struct bfd_hash_table *,
+ const char *));
+{
+ table->dynobj = NULL;
+ table->dynsymcount = 0;
+ table->dynstr = NULL;
+ table->bucketcount = 0;
+ return _bfd_link_hash_table_init (&table->root, abfd, newfunc);
}
-static unsigned int
-elf_get_reloc_upper_bound (abfd, asect)
-bfd *abfd;
-sec_ptr asect;
-{
- fprintf (stderr, "elf_get_reloc_upper_bound unimplemented\n");
- fflush (stderr);
- abort ();
- return (0);
-}
-
-static unsigned int
-elf_canonicalize_reloc (abfd, section, relptr, symbols)
-bfd *abfd;
-sec_ptr section;
-arelent **relptr;
-asymbol **symbols;
-{
- fprintf (stderr, "elf_canonicalize_reloc unimplemented\n");
- fflush (stderr);
- abort ();
- return (0);
-}
+/* Create an ELF linker hash table. */
-static unsigned int
-DEFUN (elf_get_symtab, (abfd, alocation),
- bfd *abfd AND
- asymbol **alocation)
+struct bfd_link_hash_table *
+_bfd_elf_link_hash_table_create (abfd)
+ bfd *abfd;
{
- unsigned int symcount;
- asymbol **vec;
+ struct elf_link_hash_table *ret;
- if (!elf_slurp_symbol_table (abfd))
+ ret = ((struct elf_link_hash_table *)
+ bfd_alloc (abfd, sizeof (struct elf_link_hash_table)));
+ if (ret == (struct elf_link_hash_table *) NULL)
{
- return (0);
+ bfd_set_error (bfd_error_no_memory);
+ return NULL;
}
- else
+
+ if (! _bfd_elf_link_hash_table_init (ret, abfd, _bfd_elf_link_hash_newfunc))
{
- symcount = bfd_get_symcount (abfd);
- vec = bfd_get_outsymbols (abfd);
- while (symcount-- > 0)
- {
- *alocation++ = *vec++;
- }
- *alocation++ = NULL;
- return (bfd_get_symcount (abfd));
+ bfd_release (abfd, ret);
+ return NULL;
}
-}
-static asymbol *
-elf_make_empty_symbol(abfd)
-bfd *abfd;
-{
- fprintf (stderr, "elf_make_empty_symbol unimplemented\n");
- fflush (stderr);
- abort ();
- return (NULL);
-}
-
-static 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)
-{
- fprintf (stderr, "elf_print_symbol unimplemented\n");
- fflush (stderr);
- abort ();
-}
-
-static alent *
-DEFUN (elf_get_lineno,(ignore_abfd, symbol),
- bfd *ignore_abfd AND
- asymbol *symbol)
-{
- fprintf (stderr, "elf_get_lineno unimplemented\n");
- fflush (stderr);
- abort ();
- return (NULL);
-}
-
-static boolean
-DEFUN (elf_set_arch_mach,(abfd, arch, machine),
- bfd *abfd AND
- enum bfd_architecture arch AND
- unsigned long machine)
-{
- fprintf (stderr, "elf_set_arch_mach unimplemented\n");
- fflush (stderr);
- /* Allow any architecture to be supported by the elf backend */
- return bfd_default_set_arch_mach(abfd, arch, machine);
+ return &ret->root;
}
-static 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)
-{
- fprintf (stderr, "elf_find_nearest_line unimplemented\n");
- fflush (stderr);
- abort ();
- return (false);
-}
+/* This is a hook for the ELF emulation code in the generic linker to
+ tell the backend linker what file name to use for the DT_NEEDED
+ entry for a dynamic object. */
-static int
-DEFUN (elf_sizeof_headers, (abfd, reloc),
- bfd *abfd AND
- boolean reloc)
+void
+bfd_elf_set_dt_needed_name (abfd, name)
+ bfd *abfd;
+ const char *name;
{
- fprintf (stderr, "elf_sizeof_headers unimplemented\n");
- fflush (stderr);
- abort ();
- return (0);
+ elf_dt_needed_name (abfd) = name;
}
-\f
-/* This structure contains everything that BFD knows about a target.
- It includes things like its byte order, name, what routines to call
- to do various operations, etc. Every BFD points to a target structure
- with its "xvec" member.
-
- There are two such structures here: one for big-endian machines and
- one for little-endian machines. */
-
-/* Archives are generic or unimplemented. */
-#define elf_slurp_armap bfd_false
-#define elf_slurp_extended_name_table _bfd_slurp_extended_name_table
-#define elf_truncate_arname bfd_dont_truncate_arname
-#define elf_openr_next_archived_file bfd_generic_openr_next_archived_file
-#define elf_generic_stat_arch_elt bfd_generic_stat_arch_elt
-#define elf_write_armap (PROTO (boolean, (*), \
- (bfd *arch, unsigned int elength, struct orl *map, unsigned int orl_count, \
- int stridx))) bfd_false
-
-/* Ordinary section reading and writing */
-#define elf_new_section_hook _bfd_dummy_new_section_hook
-#define elf_get_section_contents bfd_generic_get_section_contents
-#define elf_set_section_contents bfd_generic_set_section_contents
-#define elf_close_and_cleanup bfd_generic_close_and_cleanup
-
-#define elf_bfd_debug_info_start bfd_void
-#define elf_bfd_debug_info_end bfd_void
-#define elf_bfd_debug_info_accumulate (PROTO(void,(*),(bfd*, struct sec *))) bfd_void
-
-bfd_target elf_big_vec =
-{
- /* name: identify kind of target */
- "elf-big",
-
- /* flavour: general indication about file */
- bfd_target_elf_flavour,
-
- /* byteorder_big_p: data is big endian */
- true,
-
- /* header_byteorder_big_p: header is also big endian */
- true,
-
- /* object_flags: mask of all file flags */
- (HAS_RELOC | EXEC_P | HAS_LINENO | HAS_DEBUG | HAS_SYMS | HAS_LOCALS |
- DYNAMIC | WP_TEXT),
-
- /* section_flags: mask of all section flags */
- (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC | SEC_READONLY |
- SEC_DATA),
-
- /* ar_pad_char: pad character for filenames within an archive header
- FIXME: this really has nothing to do with ELF, this is a characteristic
- of the archiver and/or os and should be independently tunable */
- '/',
-
- /* ar_max_namelen: maximum number of characters in an archive header
- FIXME: this really has nothing to do with ELF, this is a characteristic
- of the archiver and should be independently tunable. This value is
- a WAG (wild a** guess) */
- 15,
-
- /* align_power_min: minimum alignment restriction for any section
- FIXME: this value may be target machine dependent */
- 3,
-
- /* Routines to byte-swap various sized integers from the data sections */
- _do_getb64, _do_putb64, _do_getb32, _do_putb32, _do_getb16, _do_putb16,
-
- /* Routines to byte-swap various sized integers from the file headers */
- _do_getb64, _do_putb64, _do_getb32, _do_putb32, _do_getb16, _do_putb16,
-
- /* bfd_check_format: check the format of a file being read */
- { _bfd_dummy_target, /* unknown format */
- elf_object_p, /* assembler/linker output (object file) */
- bfd_generic_archive_p, /* an archive */
- elf_core_file_p /* a core file */
- },
-
- /* bfd_set_format: set the format of a file being written */
- { bfd_false,
- elf_mkobject,
- _bfd_generic_mkarchive,
- bfd_false
- },
-
- /* bfd_write_contents: write cached information into a file being written */
- { bfd_false,
- elf_write_object_contents,
- _bfd_write_archive_contents,
- bfd_false
- },
-
- /* Initialize a jump table with the standard macro. All names start
- with "elf" */
- JUMP_TABLE(elf),
-
- /* SWAP_TABLE */
- NULL, NULL, NULL
-};
-
-bfd_target elf_little_vec =
-{
- /* name: identify kind of target */
- "elf-little",
-
- /* flavour: general indication about file */
- bfd_target_elf_flavour,
-
- /* byteorder_big_p: data is big endian */
- false, /* Nope -- this one's little endian */
-
- /* header_byteorder_big_p: header is also big endian */
- false, /* Nope -- this one's little endian */
-
- /* object_flags: mask of all file flags */
- (HAS_RELOC | EXEC_P | HAS_LINENO | HAS_DEBUG | HAS_SYMS | HAS_LOCALS |
- DYNAMIC | WP_TEXT),
-
- /* section_flags: mask of all section flags */
- (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC | SEC_READONLY |
- SEC_DATA),
-
- /* ar_pad_char: pad character for filenames within an archive header
- FIXME: this really has nothing to do with ELF, this is a characteristic
- of the archiver and/or os and should be independently tunable */
- '/',
-
- /* ar_max_namelen: maximum number of characters in an archive header
- FIXME: this really has nothing to do with ELF, this is a characteristic
- of the archiver and should be independently tunable. This value is
- a WAG (wild a** guess) */
- 15,
-
- /* align_power_min: minimum alignment restriction for any section
- FIXME: this value may be target machine dependent */
- 3,
-
- /* Routines to byte-swap various sized integers from the data sections */
- _do_getl64, _do_putl64, _do_getl32, _do_putl32, _do_getl16, _do_putl16,
-
- /* Routines to byte-swap various sized integers from the file headers */
- _do_getl64, _do_putl64, _do_getl32, _do_putl32, _do_getl16, _do_putl16,
-
- /* bfd_check_format: check the format of a file being read */
- { _bfd_dummy_target, /* unknown format */
- elf_object_p, /* assembler/linker output (object file) */
- bfd_generic_archive_p, /* an archive */
- elf_core_file_p /* a core file */
- },
-
- /* bfd_set_format: set the format of a file being written */
- { bfd_false,
- elf_mkobject,
- _bfd_generic_mkarchive,
- bfd_false
- },
-
- /* bfd_write_contents: write cached information into a file being written */
- { bfd_false,
- elf_write_object_contents,
- _bfd_write_archive_contents,
- bfd_false
- },
-
- /* Initialize a jump table with the standard macro. All names start
- with "elf" */
- JUMP_TABLE(elf),
-
- /* SWAP_TABLE */
- NULL, NULL, NULL
-};
projects / deliverable / binutils-gdb.git / blobdiff