diff options
Diffstat (limited to 'gdb/sparc64-tdep.c')
| -rw-r--r-- | gdb/sparc64-tdep.c | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/gdb/sparc64-tdep.c b/gdb/sparc64-tdep.c index 6038ceb..0dc85af 100644 --- a/gdb/sparc64-tdep.c +++ b/gdb/sparc64-tdep.c @@ -21,6 +21,7 @@ #include "defs.h" #include "arch-utils.h" +#include "dwarf2-frame.h" #include "floatformat.h" #include "frame.h" #include "frame-base.h" @@ -1103,6 +1104,32 @@ sparc64_return_value (struct gdbarch *gdbarch, struct type *type, } +static void +sparc64_dwarf2_frame_init_reg (struct gdbarch *gdbarch, int regnum, + struct dwarf2_frame_state_reg *reg) +{ + switch (regnum) + { + case SPARC_G0_REGNUM: + /* Since %g0 is always zero, there is no point in saving it, and + people will be inclined omit it from the CFI. Make sure we + don't warn about that. */ + reg->how = DWARF2_FRAME_REG_SAME_VALUE; + break; + case SPARC_SP_REGNUM: + reg->how = DWARF2_FRAME_REG_CFA; + break; + case SPARC64_PC_REGNUM: + reg->how = DWARF2_FRAME_REG_RA_OFFSET; + reg->loc.offset = 8; + break; + case SPARC64_NPC_REGNUM: + reg->how = DWARF2_FRAME_REG_RA_OFFSET; + reg->loc.offset = 12; + break; + } +} + void sparc64_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch) { @@ -1137,6 +1164,11 @@ sparc64_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch) set_gdbarch_skip_prologue (gdbarch, sparc64_skip_prologue); + /* Hook in the DWARF CFI frame unwinder. */ + dwarf2_frame_set_init_reg (gdbarch, sparc64_dwarf2_frame_init_reg); + /* FIXME: kettenis/20050423: Don't enable the unwinder until the + StackGhost issues have been resolved. */ + frame_unwind_append_sniffer (gdbarch, sparc64_frame_sniffer); frame_base_set_default (gdbarch, &sparc64_frame_base); } |