diff options
| author | Matt Fleming <matt@console-pimps.org> | 2009-08-16 01:44:33 +0100 |
|---|---|---|
| committer | Matt Fleming <matt@console-pimps.org> | 2009-08-16 12:48:53 +0100 |
| commit | cd7246f0e2747bd2b43d25d0f63f05db182a62c0 (patch) | |
| tree | 729c855c6e17a35b8467161baeeb6431765cf372 /arch/sh/include/asm | |
| parent | b955873bf530ee4b80e6c8b734521ad07cbaed7e (diff) | |
sh: Add support for DWARF GNU extensions
Also, remove the "fix" to DW_CFA_def_cfa_register where we reset the
frame's cfa_offset to 0. This action is incorrect when handling
DW_CFA_def_cfa_register as the DWARF spec specifically states that the
previous contents of cfa_offset should be used with the new
register. The reason that I thought cfa_offset should be reset to 0 was
because it was being assigned a bogus value prior to executing the
DW_CFA_def_cfa_register op. It turns out that the bogus cfa_offset value
came from interpreting .cfi_escape pseudo-ops (those used by the GNU
extensions) as CFA_DW_def_cfa ops.
Signed-off-by: Matt Fleming <matt@console-pimps.org>
Diffstat (limited to 'arch/sh/include/asm')
| -rw-r--r-- | arch/sh/include/asm/dwarf.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/arch/sh/include/asm/dwarf.h b/arch/sh/include/asm/dwarf.h index 60b180728d8..d3d3837c5e1 100644 --- a/arch/sh/include/asm/dwarf.h +++ b/arch/sh/include/asm/dwarf.h @@ -340,6 +340,10 @@ struct dwarf_stack { #define DW_CFA_lo_user 0x1c #define DW_CFA_hi_user 0x3f +/* GNU extension opcodes */ +#define DW_CFA_GNU_args_size 0x2e +#define DW_CFA_GNU_negative_offset_extended 0x2f + /* * Some call frame instructions encode their operands in the opcode. We * need some helper functions to extract both the opcode and operands |