92 lines
2.9 KiB
Diff
92 lines
2.9 KiB
Diff
https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=140532
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2006-05-09 Andreas Schwab <schwab@suse.de>
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* rs6000-tdep.c: Include "dwarf2-frame.h".
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(rs6000_eh_frame_regnum): Define.
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(rs6000_gdbarch_init): Enable use of DWARF CFI frame unwinder.
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Register rs6000_eh_frame_regnum.
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* Makefile.in (rs6000-tdep.o): Update dependencies.
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http://sourceware.org/ml/gdb-patches/2006-05/msg00341.html
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Selectively enabling them on platforms that are unlikely to have ever
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used GCC versions before 3.4 should be fine.
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--- ./gdb/Makefile.in 5 May 2006 22:39:12 -0000 1.812
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+++ ./gdb/Makefile.in 9 May 2006 14:10:40 -0000
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@@ -2515,7 +2515,7 @@ rs6000-tdep.o: rs6000-tdep.c $(defs_h) $
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$(reggroups_h) $(libbfd_h) $(coff_internal_h) $(libcoff_h) \
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$(coff_xcoff_h) $(libxcoff_h) $(elf_bfd_h) $(solib_svr4_h) \
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$(ppc_tdep_h) $(gdb_assert_h) $(dis_asm_h) $(trad_frame_h) \
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- $(frame_unwind_h) $(frame_base_h) $(rs6000_tdep_h)
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+ $(frame_unwind_h) $(frame_base_h) $(rs6000_tdep_h) $(dwarf2_frame_h)
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rs6000-aix-tdep.o: rs6000-aix-tdep.c $(defs_h) $(osabi_h) $(rs6000_tdep_h)
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s390-nat.o: s390-nat.c $(defs_h) $(tm_h) $(regcache_h) $(inferior_h) \
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$(s390_tdep_h) $(target_h) $(linux_nat_h)
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--- ./gdb/rs6000-tdep.c 23 Apr 2006 14:15:01 -0000 1.258
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+++ ./gdb/rs6000-tdep.c 9 May 2006 14:10:15 -0000
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@@ -40,6 +40,7 @@
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#include "sim-regno.h"
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#include "gdb/sim-ppc.h"
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#include "reggroups.h"
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+#include "dwarf2-frame.h"
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#include "libbfd.h" /* for bfd_default_set_arch_mach */
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#include "coff/internal.h" /* for libcoff.h */
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@@ -2243,6 +2244,40 @@ rs6000_dwarf2_reg_to_regnum (int num)
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}
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+/* Convert a .eh_frame register number to a Dwarf 2 register number. */
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+static int
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+rs6000_eh_frame_regnum (struct gdbarch *gdbarch, int num)
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+{
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+ if (0 <= num && num <= 63) /* r0-r31,fp0-fp31 */
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+ return num;
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+ else if (68 <= num && num <= 75) /* cr0-cr8 */
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+ return num - 68 + 86;
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+ else if (77 <= num && num <= 108) /* vr0-vr31 */
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+ return num - 77 + 1124;
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+ else
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+ switch (num)
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+ {
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+ case 64: /* mq */
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+ return 100;
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+ case 65: /* lr */
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+ return 108;
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+ case 66: /* ctr */
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+ return 109;
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+ case 76: /* xer */
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+ return 101;
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+ case 109: /* vrsave */
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+ return 356;
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+ case 110: /* vscr */
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+ return 67;
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+ case 111: /* spe_acc */
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+ return 99;
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+ case 112: /* spefscr */
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+ return 612;
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+ default:
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+ return num;
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+ }
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+}
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+
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static void
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rs6000_store_return_value (struct type *type,
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struct regcache *regcache,
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@@ -3461,6 +3496,10 @@ rs6000_gdbarch_init (struct gdbarch_info
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/* Helpers for function argument information. */
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set_gdbarch_fetch_pointer_argument (gdbarch, rs6000_fetch_pointer_argument);
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+ /* Hook in the DWARF CFI frame unwinder. */
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+ frame_unwind_append_sniffer (gdbarch, dwarf2_frame_sniffer);
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+ dwarf2_frame_set_eh_frame_regnum (gdbarch, rs6000_eh_frame_regnum);
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+
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/* Hook in ABI-specific overrides, if they have been registered. */
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gdbarch_init_osabi (info, gdbarch);
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