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authorNick Clifton <nickc@redhat.com>2018-06-20 10:43:00 +0100
committerNick Clifton <nickc@redhat.com>2018-06-20 10:43:00 +0100
commitc6643fcc058d6b4aebca75818fbbb705837a9fa3 (patch)
tree0e99ca41b74b546834d8b2151f9b855200146f68 /bfd/mach-o.c
parentebb1332297da904a4adab0d3696a5512604f5edd (diff)
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Stop objcopy from corrupting mach-o files.
PR 23299 * mach-o.c (cputype): New function. (cpusubtype): New function. (bfd_mach_o_bfd_print_private_data): New function. Dispalys the values in the MACH-O file header. (bfd_mach_o_bfd_copy_private_header_data): Copy the cputype and cpusubtype fields from the input bfd's mach-o header to the output bfd. * mach-o-target.c (bfd_mach_o_bfd_print_private_bfd_data): Redefine to bfd_mach_o_bfd_print_private_data. * mach-o.h (bfd_mach_o_bfd_print_private_bfd_data): Prototype.
Diffstat (limited to 'bfd/mach-o.c')
-rw-r--r--bfd/mach-o.c140
1 files changed, 137 insertions, 3 deletions
diff --git a/bfd/mach-o.c b/bfd/mach-o.c
index cfae354..d58e62d 100644
--- a/bfd/mach-o.c
+++ b/bfd/mach-o.c
@@ -592,6 +592,124 @@ bfd_mach_o_bfd_copy_private_section_data (bfd *ibfd, asection *isection,
return TRUE;
}
+static const char *
+cputype (unsigned long value)
+{
+ switch (value)
+ {
+ case BFD_MACH_O_CPU_TYPE_VAX: return "VAX";
+ case BFD_MACH_O_CPU_TYPE_MC680x0: return "MC68k";
+ case BFD_MACH_O_CPU_TYPE_I386: return "I386";
+ case BFD_MACH_O_CPU_TYPE_MIPS: return "MIPS";
+ case BFD_MACH_O_CPU_TYPE_MC98000: return "MC98k";
+ case BFD_MACH_O_CPU_TYPE_HPPA: return "HPPA";
+ case BFD_MACH_O_CPU_TYPE_ARM: return "ARM";
+ case BFD_MACH_O_CPU_TYPE_MC88000: return "MC88K";
+ case BFD_MACH_O_CPU_TYPE_SPARC: return "SPARC";
+ case BFD_MACH_O_CPU_TYPE_I860: return "I860";
+ case BFD_MACH_O_CPU_TYPE_ALPHA: return "ALPHA";
+ case BFD_MACH_O_CPU_TYPE_POWERPC: return "PPC";
+ case BFD_MACH_O_CPU_TYPE_POWERPC_64: return "PPC64";
+ case BFD_MACH_O_CPU_TYPE_X86_64: return "X86_64";
+ case BFD_MACH_O_CPU_TYPE_ARM64: return "ARM64";
+ default: return _("<unknown>");
+ }
+}
+
+static const char *
+cpusubtype (unsigned long cputype, unsigned long cpusubtype)
+{
+ static char buffer[128];
+
+ buffer[0] = 0;
+ switch (cpusubtype & BFD_MACH_O_CPU_SUBTYPE_MASK)
+ {
+ case 0:
+ break;
+ case BFD_MACH_O_CPU_SUBTYPE_LIB64:
+ sprintf (buffer, " (LIB64)"); break;
+ default:
+ sprintf (buffer, _("<unknown mask flags>")); break;
+ }
+
+ cpusubtype &= ~ BFD_MACH_O_CPU_SUBTYPE_MASK;
+
+ switch (cputype)
+ {
+ case BFD_MACH_O_CPU_TYPE_X86_64:
+ case BFD_MACH_O_CPU_TYPE_I386:
+ switch (cpusubtype)
+ {
+ case BFD_MACH_O_CPU_SUBTYPE_X86_ALL:
+ return strcat (buffer, " (X86_ALL)");
+ default:
+ break;
+ }
+ break;
+
+ case BFD_MACH_O_CPU_TYPE_ARM:
+ switch (cpusubtype)
+ {
+ case BFD_MACH_O_CPU_SUBTYPE_ARM_ALL:
+ return strcat (buffer, " (ARM_ALL)");
+ case BFD_MACH_O_CPU_SUBTYPE_ARM_V4T:
+ return strcat (buffer, " (ARM_V4T)");
+ case BFD_MACH_O_CPU_SUBTYPE_ARM_V6:
+ return strcat (buffer, " (ARM_V6)");
+ case BFD_MACH_O_CPU_SUBTYPE_ARM_V5TEJ:
+ return strcat (buffer, " (ARM_V5TEJ)");
+ case BFD_MACH_O_CPU_SUBTYPE_ARM_XSCALE:
+ return strcat (buffer, " (ARM_XSCALE)");
+ case BFD_MACH_O_CPU_SUBTYPE_ARM_V7:
+ return strcat (buffer, " (ARM_V7)");
+ default:
+ break;
+ }
+ break;
+
+ case BFD_MACH_O_CPU_TYPE_ARM64:
+ switch (cpusubtype)
+ {
+ case BFD_MACH_O_CPU_SUBTYPE_ARM64_ALL:
+ return strcat (buffer, " (ARM64_ALL)");
+ case BFD_MACH_O_CPU_SUBTYPE_ARM64_V8:
+ return strcat (buffer, " (ARM64_V8)");
+ default:
+ break;
+ }
+ break;
+
+ default:
+ break;
+ }
+
+ if (cpusubtype != 0)
+ return strcat (buffer, _(" (<unknown>)"));
+
+ return buffer;
+}
+
+bfd_boolean
+bfd_mach_o_bfd_print_private_bfd_data (bfd *abfd, void *ptr)
+{
+ FILE * file = (FILE *) ptr;
+ bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
+
+ fprintf (file, _(" MACH-O header:\n"));
+ fprintf (file, _(" magic: %#lx\n"), (long) mdata->header.magic);
+ fprintf (file, _(" cputype: %#lx (%s)\n"), (long) mdata->header.cputype,
+ cputype (mdata->header.cputype));
+ fprintf (file, _(" cpusubtype: %#lx%s\n"), (long) mdata->header.cpusubtype,
+ cpusubtype (mdata->header.cputype, mdata->header.cpusubtype));
+ fprintf (file, _(" filetype: %#lx\n"), (long) mdata->header.filetype);
+ fprintf (file, _(" ncmds: %#lx\n"), (long) mdata->header.ncmds);
+ fprintf (file, _(" sizeocmds: %#lx\n"), (long) mdata->header.sizeofcmds);
+ fprintf (file, _(" flags: %#lx\n"), (long) mdata->header.flags);
+ fprintf (file, _(" version: %x\n"), mdata->header.version);
+
+ return TRUE;
+}
+
/* Copy any private info we understand from the input bfd
to the output bfd. */
@@ -615,6 +733,21 @@ bfd_mach_o_bfd_copy_private_header_data (bfd *ibfd, bfd *obfd)
/* Copy header flags. */
omdata->header.flags = imdata->header.flags;
+ /* PR 23299. Copy the cputype. */
+ if (imdata->header.cputype != omdata->header.cputype)
+ {
+ if (omdata->header.cputype == 0)
+ omdata->header.cputype = imdata->header.cputype;
+ else if (imdata->header.cputype != 0)
+ /* Urg - what has happened ? */
+ _bfd_error_handler (_("incompatible cputypes in mach-o files: %ld vs %ld"),
+ (long) imdata->header.cputype,
+ (long) omdata->header.cputype);
+ }
+
+ /* Copy the cpusubtype. */
+ omdata->header.cpusubtype = imdata->header.cpusubtype;
+
/* Copy commands. */
for (icmd = imdata->first_command; icmd != NULL; icmd = icmd->next)
{
@@ -1295,7 +1428,7 @@ bfd_mach_o_get_reloc_upper_bound (bfd *abfd ATTRIBUTE_UNUSED,
void
bfd_mach_o_swap_in_non_scattered_reloc (bfd *abfd, bfd_mach_o_reloc_info *rel,
- unsigned char *fields)
+ unsigned char *fields)
{
unsigned char info = fields[3];
@@ -1611,7 +1744,7 @@ bfd_mach_o_canonicalize_dynamic_reloc (bfd *abfd, arelent **rels,
static void
bfd_mach_o_swap_out_non_scattered_reloc (bfd *abfd, unsigned char *fields,
- bfd_mach_o_reloc_info *rel)
+ bfd_mach_o_reloc_info *rel)
{
unsigned char info = 0;
@@ -5830,7 +5963,8 @@ bfd_mach_o_close_and_cleanup (bfd *abfd)
return _bfd_generic_close_and_cleanup (abfd);
}
-bfd_boolean bfd_mach_o_free_cached_info (bfd *abfd)
+bfd_boolean
+bfd_mach_o_free_cached_info (bfd *abfd)
{
bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
asection *asect;