libbacktrace, Mach-O : Support PowerPC archs.

This adds the PPC architecture variants for Mach-O libbacktrace. With this (as for X86 and Arm) when dsymutil is run on the binary we get a basic usable backtrace. Testsuite results on powerpc-apple-darwin9 are the same as for X86: * btest fails (TBC why) * dwarf5 tests fail because dsymutil does not handle that so far. libbacktrace/ChangeLog: * macho.c (MACH_O_CPU_TYPE_PPC): New. (MACH_O_CPU_TYPE_PPC64): New. Add compile-tests for powerpc to the Mach-O variants. Close #55

libbacktrace, Mach-O : Support PowerPC archs.
753968c2 · Iain Sandoe · Ian Lance Taylor · 77bcaa99 · 753968c2
Commit 753968c2 authored Sep 16, 2020 by Iain Sandoe Committed by Ian Lance Taylor Sep 27, 2020
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macho.c macho.c +6 -0

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--- a/macho.c
+++ b/macho.c
@@ -128,9 +128,11 @@ struct macho_fat_arch_64

 #define MACH_O_CPU_TYPE_X86 7
 #define MACH_O_CPU_TYPE_ARM 12
+#define MACH_O_CPU_TYPE_PPC 18

 #define MACH_O_CPU_TYPE_X86_64 (MACH_O_CPU_TYPE_X86 | MACH_O_CPU_ARCH_ABI64)
 #define MACH_O_CPU_TYPE_ARM64  (MACH_O_CPU_TYPE_ARM | MACH_O_CPU_ARCH_ABI64)
+#define MACH_O_CPU_TYPE_PPC64  (MACH_O_CPU_TYPE_PPC | MACH_O_CPU_ARCH_ABI64)

 /* The header of a load command.  */

@@ -776,6 +778,10 @@ macho_add_fat (struct backtrace_state *state, const char *filename,
  cputype = MACH_O_CPU_TYPE_ARM64;
 #elif defined (__arm__)
  cputype = MACH_O_CPU_TYPE_ARM;
+#elif defined (__ppc__)
+  cputype = MACH_O_CPU_TYPE_PPC;
+#elif defined (__ppc64__)
+  cputype = MACH_O_CPU_TYPE_PPC64;
 #else
  error_callback (data, "unknown Mach-O architecture", 0);
  goto fail;