diff options
Diffstat (limited to 'tools/objtool/orc_types.h')
| -rw-r--r-- | tools/objtool/orc_types.h | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/tools/objtool/orc_types.h b/tools/objtool/orc_types.h index fc5cf6cffd9a..9c9dc579bd7d 100644 --- a/tools/objtool/orc_types.h +++ b/tools/objtool/orc_types.h @@ -61,11 +61,19 @@ * * ORC_TYPE_REGS_IRET: Used in entry code to indicate that sp_reg+sp_offset * points to the iret return frame. + * + * The UNWIND_HINT macros are used only for the unwind_hint struct. They + * aren't used in struct orc_entry due to size and complexity constraints. + * Objtool converts them to real types when it converts the hints to orc + * entries. */ #define ORC_TYPE_CALL 0 #define ORC_TYPE_REGS 1 #define ORC_TYPE_REGS_IRET 2 +#define UNWIND_HINT_TYPE_SAVE 3 +#define UNWIND_HINT_TYPE_RESTORE 4 +#ifndef __ASSEMBLY__ /* * This struct is more or less a vastly simplified version of the DWARF Call * Frame Information standard. It contains only the necessary parts of DWARF @@ -82,4 +90,18 @@ struct orc_entry { unsigned type:2; } __packed; +/* + * This struct is used by asm and inline asm code to manually annotate the + * location of registers on the stack for the ORC unwinder. + * + * Type can be either ORC_TYPE_* or UNWIND_HINT_TYPE_*. + */ +struct unwind_hint { + u32 ip; + s16 sp_offset; + u8 sp_reg; + u8 type; +}; +#endif /* __ASSEMBLY__ */ + #endif /* _ORC_TYPES_H */ |