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sh: Set the cfa_offset to 0 if we see a DW_CFA_def_cfa_register op

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The way that the CFA is calculated can change as we progress through a
function. If we see a DW_CFA_def_cfa_register op we need to reset the
frame's cfa_offset value which may have been previously setup.

Signed-off-by: Matt Fleming <matt@console-pimps.org>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
This commit is contained in:
Matt Fleming
2009-08-15 00:04:00 +01:00
committed by Paul Mundt
parent 7dd6662a92
commit 180aa6e6aa
1 changed files with 1 additions and 0 deletions
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arch/sh/kernel/dwarf.c
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@@ -449,6 +449,7 @@ static int dwarf_cfa_execute_insns(unsigned char *insn_start,
count = dwarf_read_uleb128(current_insn, count = dwarf_read_uleb128(current_insn,
&frame->cfa_register); &frame->cfa_register);
current_insn += count; current_insn += count;
frame->cfa_offset = 0;
frame->flags |= DWARF_FRAME_CFA_REG_OFFSET; frame->flags |= DWARF_FRAME_CFA_REG_OFFSET;
break; break;
case DW_CFA_def_cfa_offset: case DW_CFA_def_cfa_offset: