2008-12-23 Tristan Gingold <gingold@adacore.com>
* mach-o.c (bfd_mach_o_make_bfd_section): Use the standard ELF name .eh_frame for __TEXT.__eh_frame so that it is recognized by gdb. Use shorter sections name for well known sections. (bfd_mach_o_scan_read_dylinker): Only put dylinker name in the section content. (bfd_mach_o_scan_read_segment): Use shorter sections name for well known segments. (bfd_mach_o_scan_read_command): Ignore some new commands. (bfd_mach_o_openr_next_archived_file): Use more descriptive names for members filename. (bfd_mach_o_fat_extract): New function to easily extract members of a fat binary. * mach-o.h (bfd_mach_o_load_command_type): Add new constants. (bfd_mach_o_dylinker_command): Fix comment and reindent. (bfd_mach_o_fat_extract): New prototype.
This commit is contained in:
Tristan Gingold
parent
44f7464281
commit
846b9259cb
@ -1,3 +1,21 @@
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2008-12-23 Tristan Gingold <gingold@adacore.com>
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* mach-o.c (bfd_mach_o_make_bfd_section): Use the standard ELF name
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.eh_frame for __TEXT.__eh_frame so that it is recognized by gdb.
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Use shorter sections name for well known sections.
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(bfd_mach_o_scan_read_dylinker): Only put dylinker name in the
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section content.
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(bfd_mach_o_scan_read_segment): Use shorter sections name for
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well known segments.
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(bfd_mach_o_scan_read_command): Ignore some new commands.
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(bfd_mach_o_openr_next_archived_file): Use more descriptive names
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for members filename.
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(bfd_mach_o_fat_extract): New function to easily extract members
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of a fat binary.
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* mach-o.h (bfd_mach_o_load_command_type): Add new constants.
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(bfd_mach_o_dylinker_command): Fix comment and reindent.
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(bfd_mach_o_fat_extract): New prototype.
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2008-12-23 Johan Olmutz Nielsen <jnielsen@ddci.com>
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* coffcode.h (coff_write_object_contents): Always initialise
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116
bfd/mach-o.c
116
bfd/mach-o.c
@ -796,6 +796,22 @@ bfd_mach_o_make_bfd_section (bfd *abfd, bfd_mach_o_section *section,
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if (strcmp (section->segname, "__DWARF") == 0
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&& strncmp (section->sectname, "__", 2) == 0)
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sprintf (sname, ".%s", section->sectname + 2);
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else if (strcmp (section->segname, "__TEXT") == 0)
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{
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if (strcmp (section->sectname, "__eh_frame") == 0)
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strcpy (sname, ".eh_frame");
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else if (section->sectname[0])
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sprintf (sname, "%s.%s", section->segname, section->sectname);
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else
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strcpy (sname, section->segname);
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}
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else if (strcmp (section->segname, "__DATA") == 0)
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{
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if (section->sectname[0])
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sprintf (sname, "%s.%s", section->segname, section->sectname);
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else
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strcpy (sname, section->segname);
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}
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else
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sprintf (sname, "%s.%s.%s", prefix, section->segname, section->sectname);
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@ -1210,8 +1226,8 @@ bfd_mach_o_scan_read_dylinker (bfd *abfd,
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bfdsec->vma = 0;
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bfdsec->lma = 0;
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bfdsec->size = command->len - 8;
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bfdsec->filepos = command->offset + 8;
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bfdsec->size = command->len - nameoff;
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bfdsec->filepos = command->offset + nameoff;
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bfdsec->alignment_power = 0;
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cmd->section = bfdsec;
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@ -1584,7 +1600,13 @@ bfd_mach_o_scan_read_segment (bfd *abfd,
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sname = bfd_alloc (abfd, snamelen);
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if (sname == NULL)
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return -1;
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sprintf (sname, "%s.%s", prefix, seg->segname);
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if (strcmp (seg->segname, "__TEXT") == 0
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|| strcmp (seg->segname, "__DATA") == 0
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|| strcmp (seg->segname, "__IMPORT") == 0
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|| strcmp (seg->segname, "__LINKEDIT") == 0)
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strcpy (sname, seg->segname);
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else
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sprintf (sname, "%s.%s", prefix, seg->segname);
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bfdsec = bfd_make_section_anyway (abfd, sname);
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if (bfdsec == NULL)
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@ -1708,6 +1730,8 @@ bfd_mach_o_scan_read_command (bfd *abfd, bfd_mach_o_load_command *command)
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return -1;
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break;
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case BFD_MACH_O_LC_CODE_SIGNATURE:
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case BFD_MACH_O_LC_SEGMENT_SPLIT_INFO:
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case BFD_MACH_O_LC_REEXPORT_DYLIB:
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break;
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default:
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fprintf (stderr, "unable to read unknown load command 0x%lx\n",
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@ -2110,10 +2134,8 @@ bfd_mach_o_openr_next_archived_file (bfd *archive, bfd *prev)
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mach_o_fat_archentry *entry = NULL;
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unsigned long i;
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bfd *nbfd;
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const char *arch_name;
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enum bfd_architecture arch_type;
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unsigned long arch_subtype;
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char *s = NULL;
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adata = (mach_o_fat_data_struct *) archive->tdata.mach_o_fat_data;
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BFD_ASSERT (adata != NULL);
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@ -2153,17 +2175,89 @@ bfd_mach_o_openr_next_archived_file (bfd *archive, bfd *prev)
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bfd_mach_o_convert_architecture (entry->cputype, entry->cpusubtype,
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&arch_type, &arch_subtype);
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arch_name = bfd_printable_arch_mach (arch_type, arch_subtype);
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s = bfd_malloc (strlen (arch_name) + 1);
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if (s == NULL)
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return NULL;
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strcpy (s, arch_name);
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nbfd->filename = s;
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/* Create the member filename.
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Use FILENAME:ARCH_NAME. */
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{
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char *s = NULL;
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const char *arch_name;
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size_t arch_file_len = strlen (bfd_get_filename (archive));
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arch_name = bfd_printable_arch_mach (arch_type, arch_subtype);
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s = bfd_malloc (arch_file_len + 1 + strlen (arch_name) + 1);
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if (s == NULL)
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return NULL;
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memcpy (s, bfd_get_filename (archive), arch_file_len);
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s[arch_file_len] = ':';
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strcpy (s + arch_file_len + 1, arch_name);
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nbfd->filename = s;
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}
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nbfd->iostream = NULL;
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bfd_set_arch_mach (nbfd, arch_type, arch_subtype);
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return nbfd;
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}
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/* If ABFD format is FORMAT and architecture is ARCH, return it.
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If ABFD is a fat image containing a member that corresponds to FORMAT
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and ARCH, returns it.
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In other case, returns NULL.
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This function allows transparent uses of fat images. */
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bfd *
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bfd_mach_o_fat_extract (bfd *abfd,
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bfd_format format,
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const bfd_arch_info_type *arch)
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{
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bfd *res;
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mach_o_fat_data_struct *adata;
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unsigned int i;
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if (bfd_check_format (abfd, format))
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{
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if (bfd_get_arch_info (abfd) == arch)
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return abfd;
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return NULL;
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}
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if (!bfd_check_format (abfd, bfd_archive)
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|| abfd->xvec != &mach_o_fat_vec)
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return NULL;
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/* This is a Mach-O fat image. */
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adata = (mach_o_fat_data_struct *) abfd->tdata.mach_o_fat_data;
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BFD_ASSERT (adata != NULL);
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for (i = 0; i < adata->nfat_arch; i++)
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{
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struct mach_o_fat_archentry *e = &adata->archentries[i];
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enum bfd_architecture cpu_type;
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unsigned long cpu_subtype;
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bfd_mach_o_convert_architecture (e->cputype, e->cpusubtype,
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&cpu_type, &cpu_subtype);
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if (cpu_type != arch->arch || cpu_subtype != arch->mach)
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continue;
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/* The architecture is found. */
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res = _bfd_new_bfd_contained_in (abfd);
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if (res == NULL)
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return NULL;
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res->origin = e->offset;
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res->filename = strdup (abfd->filename);
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res->iostream = NULL;
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if (bfd_check_format (res, format))
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{
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BFD_ASSERT (bfd_get_arch_info (res) == arch);
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return res;
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}
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bfd_close (res);
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return NULL;
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}
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return NULL;
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}
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int
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bfd_mach_o_lookup_section (bfd *abfd,
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asection *section,
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15
bfd/mach-o.h
15
bfd/mach-o.h
@ -105,7 +105,11 @@ typedef enum bfd_mach_o_load_command_type
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in a dylib. */
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BFD_MACH_O_LC_UUID = 0x1b, /* 128-bit UUID of the executable. */
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BFD_MACH_O_LC_RPATH = 0x1c, /* Run path addiions. */
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BFD_MACH_O_LC_CODE_SIGNATURE = 0x1d /* Local of code signature. */
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BFD_MACH_O_LC_CODE_SIGNATURE = 0x1d, /* Local of code signature. */
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BFD_MACH_O_LC_SEGMENT_SPLIT_INFO = 0x1e, /* Local of info to split seg. */
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BFD_MACH_O_LC_REEXPORT_DYLIB = 0x1f, /* Load and re-export lib. */
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BFD_MACH_O_LC_LAZY_LOAD_DYLIB = 0x20, /* Delay load of lib until use. */
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BFD_MACH_O_LC_ENCRYPTION_INFO = 0x21 /* Encrypted segment info. */
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}
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bfd_mach_o_load_command_type;
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@ -458,10 +462,10 @@ bfd_mach_o_thread_command;
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typedef struct bfd_mach_o_dylinker_command
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{
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unsigned long cmd; /* LC_ID_DYLIB or LC_LOAD_DYLIB. */
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unsigned long cmdsize; /* Includes pathname string. */
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unsigned long name_offset; /* Offset to library's path name. */
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unsigned long name_len; /* Offset to library's path name. */
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unsigned long cmd; /* LC_ID_DYLINKER or LC_LOAD_DYLINKER. */
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unsigned long cmdsize; /* Includes pathname string. */
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unsigned long name_offset; /* Offset to library's path name. */
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unsigned long name_len; /* Offset to library's path name. */
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asection *section;
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}
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bfd_mach_o_dylinker_command;
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@ -555,6 +559,7 @@ int bfd_mach_o_core_fetch_environment (bfd *, unsigned ch
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char * bfd_mach_o_core_file_failing_command (bfd *);
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int bfd_mach_o_core_file_failing_signal (bfd *);
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bfd_boolean bfd_mach_o_core_file_matches_executable_p (bfd *, bfd *);
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bfd *bfd_mach_o_fat_extract (bfd *, bfd_format , const bfd_arch_info_type *);
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extern const bfd_target mach_o_be_vec;
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extern const bfd_target mach_o_le_vec;
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