1 #ifndef _ASM_X86_UNWIND_HINTS_H 2 #define _ASM_X86_UNWIND_HINTS_H 3 4 #include <linux/objtool.h> 5 6 #include "orc_types.h" 7 8 #ifdef __ASSEMBLY__ 9 10 .macro UNWIND_HINT_EMPTY 11 UNWIND_HINT type=UNWIND_HINT_TYPE_CALL end=1 12 .endm 13 14 .macro UNWIND_HINT_ENTRY 15 UNWIND_HINT type=UNWIND_HINT_TYPE_ENTRY end=1 16 .endm 17 18 .macro UNWIND_HINT_REGS base=%rsp offset=0 indirect=0 extra=1 partial=0 19 .if \base == %rsp 20 .if \indirect 21 .set sp_reg, ORC_REG_SP_INDIRECT 22 .else 23 .set sp_reg, ORC_REG_SP 24 .endif 25 .elseif \base == %rbp 26 .set sp_reg, ORC_REG_BP 27 .elseif \base == %rdi 28 .set sp_reg, ORC_REG_DI 29 .elseif \base == %rdx 30 .set sp_reg, ORC_REG_DX 31 .elseif \base == %r10 32 .set sp_reg, ORC_REG_R10 33 .else 34 .error "UNWIND_HINT_REGS: bad base register" 35 .endif 36 37 .set sp_offset, \offset 38 39 .if \partial 40 .set type, UNWIND_HINT_TYPE_REGS_PARTIAL 41 .elseif \extra == 0 42 .set type, UNWIND_HINT_TYPE_REGS_PARTIAL 43 .set sp_offset, \offset + (16*8) 44 .else 45 .set type, UNWIND_HINT_TYPE_REGS 46 .endif 47 48 UNWIND_HINT sp_reg=sp_reg sp_offset=sp_offset type=type 49 .endm 50 51 .macro UNWIND_HINT_IRET_REGS base=%rsp offset=0 52 UNWIND_HINT_REGS base=\base offset=\offset partial=1 53 .endm 54 55 .macro UNWIND_HINT_FUNC 56 UNWIND_HINT sp_reg=ORC_REG_SP sp_offset=8 type=UNWIND_HINT_TYPE_FUNC 57 .endm 58 59 .macro UNWIND_HINT_SAVE 60 UNWIND_HINT type=UNWIND_HINT_TYPE_SAVE 61 .endm 62 63 .macro UNWIND_HINT_RESTORE 64 UNWIND_HINT type=UNWIND_HINT_TYPE_RESTORE 65 .endm 66 67 #else 68 69 #define UNWIND_HINT_FUNC \ 70 UNWIND_HINT(ORC_REG_SP, 8, UNWIND_HINT_TYPE_FUNC, 0) 71 72 #endif /* __ASSEMBLY__ */ 73 74 #endif /* _ASM_X86_UNWIND_HINTS_H */ 75