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* dwarf2-frame.c (execute_cfa_program): Implement

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DW_CFA_GNU_window_save.
This commit is contained in:
Mark Kettenis 2005-03-26 15:20:42 +00:00
parent 7c834684b6
commit a77f4086a1
2 changed files with 30 additions and 0 deletions
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5
gdb/ChangeLog
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@ -1,3 +1,8 @@
2005-03-26 Mark Kettenis <kettenis@gnu.org>
* dwarf2-frame.c (execute_cfa_program): Implement
DW_CFA_GNU_window_save.
2005-03-25 Mark Kettenis <kettenis@gnu.org>
* config/sparc/nbsd64.mh (NAT_FILE): Remove.

25
gdb/dwarf2-frame.c
View File

@ -445,6 +445,31 @@ bad CFI data; mismatched DW_CFA_restore_state at 0x%s"), paddr (fs->pc));
/* cfa_how deliberately not set. */
break;
case DW_CFA_GNU_window_save:
/* This is SPARC-specific code, and contains hard-coded
constants for the register numbering scheme used by
GCC. Rather than having a architecture-specific
operation that's only ever used by a single
architecture, we provide the implementation here.
Incidentally that's what GCC does too in its
unwinder. */
{
struct gdbarch *gdbarch = get_frame_arch (next_frame);
int size = register_size(gdbarch, 0);
dwarf2_frame_state_alloc_regs (&fs->regs, 32);
for (reg = 8; reg < 16; reg++)
{
fs->regs.reg[reg].how = DWARF2_FRAME_REG_SAVED_REG;
fs->regs.reg[reg].loc.reg = reg + 16;
}
for (reg = 16; reg < 32; reg++)
{
fs->regs.reg[reg].how = DWARF2_FRAME_REG_SAVED_OFFSET;
fs->regs.reg[reg].loc.offset = (reg - 16) * size;
}
}
break;
case DW_CFA_GNU_args_size:
/* Ignored. */
insn_ptr = read_uleb128 (insn_ptr, insn_end, &utmp);