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| author | Matt Fleming <matt@console-pimps.org> | 2009-08-20 19:53:49 +0100 |
|---|---|---|
| committer | Matt Fleming <matt@console-pimps.org> | 2009-08-21 13:04:11 +0100 |
| commit | 5580e9044df9c0e87861739d8c527006ead92e52 (patch) | |
| tree | ef7c280cbc9e5b9f22170485cf05e7ebbe6c01f5 /arch/sh/include | |
| parent | 5480675dc60c7dda7146e506981b2b40a775cc1e (diff) | |
| download | linux-5580e9044df9c0e87861739d8c527006ead92e52.tar.gz linux-5580e9044df9c0e87861739d8c527006ead92e52.tar.bz2 linux-5580e9044df9c0e87861739d8c527006ead92e52.zip | |
sh: Handle the DWARF op, DW_CFA_undefined
Allow a DWARF register to have an undefined value. When applied to the
DWARF return address register this lets lets us label a function as
having no direct caller, e.g. kernel_thread_helper().
Signed-off-by: Matt Fleming <matt@console-pimps.org>
Diffstat (limited to 'arch/sh/include')
| -rw-r--r-- | arch/sh/include/asm/dwarf.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/sh/include/asm/dwarf.h b/arch/sh/include/asm/dwarf.h index 8b0bcc087385..c367ed3373c5 100644 --- a/arch/sh/include/asm/dwarf.h +++ b/arch/sh/include/asm/dwarf.h @@ -297,6 +297,7 @@ struct dwarf_reg { unsigned long flags; #define DWARF_REG_OFFSET (1 << 0) #define DWARF_VAL_OFFSET (1 << 1) +#define DWARF_UNDEFINED (1 << 2) }; /* @@ -370,6 +371,7 @@ extern struct dwarf_frame *dwarf_unwind_stack(unsigned long, #define CFI_DEF_CFA .cfi_def_cfa #define CFI_REGISTER .cfi_register #define CFI_REL_OFFSET .cfi_rel_offset +#define CFI_UNDEFINED .cfi_undefined #else @@ -383,6 +385,7 @@ extern struct dwarf_frame *dwarf_unwind_stack(unsigned long, #define CFI_DEF_CFA CFI_IGNORE #define CFI_REGISTER CFI_IGNORE #define CFI_REL_OFFSET CFI_IGNORE +#define CFI_UNDEFINED CFI_IGNORE #ifndef __ASSEMBLY__ static inline void dwarf_unwinder_init(void) |