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_END_OF_STACK |
11 | UNWIND_HINT type=UNWIND_HINT_TYPE_END_OF_STACK |
12 | .endm |
13 | |
14 | .macro UNWIND_HINT_UNDEFINED |
15 | UNWIND_HINT type=UNWIND_HINT_TYPE_UNDEFINED |
16 | .endm |
17 | |
18 | .macro UNWIND_HINT_ENTRY |
19 | VALIDATE_UNRET_BEGIN |
20 | UNWIND_HINT_END_OF_STACK |
21 | .endm |
22 | |
23 | .macro UNWIND_HINT_REGS base=%rsp offset=0 indirect=0 extra=1 partial=0 signal=1 |
24 | .if \base == %rsp |
25 | .if \indirect |
26 | .set sp_reg, ORC_REG_SP_INDIRECT |
27 | .else |
28 | .set sp_reg, ORC_REG_SP |
29 | .endif |
30 | .elseif \base == %rbp |
31 | .set sp_reg, ORC_REG_BP |
32 | .elseif \base == %rdi |
33 | .set sp_reg, ORC_REG_DI |
34 | .elseif \base == %rdx |
35 | .set sp_reg, ORC_REG_DX |
36 | .elseif \base == %r10 |
37 | .set sp_reg, ORC_REG_R10 |
38 | .else |
39 | .error "UNWIND_HINT_REGS: bad base register" |
40 | .endif |
41 | |
42 | .set sp_offset, \offset |
43 | |
44 | .if \partial |
45 | .set type, UNWIND_HINT_TYPE_REGS_PARTIAL |
46 | .elseif \extra == 0 |
47 | .set type, UNWIND_HINT_TYPE_REGS_PARTIAL |
48 | .set sp_offset, \offset + (16*8) |
49 | .else |
50 | .set type, UNWIND_HINT_TYPE_REGS |
51 | .endif |
52 | |
53 | UNWIND_HINT sp_reg=sp_reg sp_offset=sp_offset type=type signal=\signal |
54 | .endm |
55 | |
56 | .macro UNWIND_HINT_IRET_REGS base=%rsp offset=0 signal=1 |
57 | UNWIND_HINT_REGS base=\base offset=\offset partial=1 signal=\signal |
58 | .endm |
59 | |
60 | .macro UNWIND_HINT_IRET_ENTRY base=%rsp offset=0 signal=1 |
61 | VALIDATE_UNRET_BEGIN |
62 | UNWIND_HINT_IRET_REGS base=\base offset=\offset signal=\signal |
63 | .endm |
64 | |
65 | .macro UNWIND_HINT_FUNC |
66 | UNWIND_HINT sp_reg=ORC_REG_SP sp_offset=8 type=UNWIND_HINT_TYPE_FUNC |
67 | .endm |
68 | |
69 | .macro UNWIND_HINT_SAVE |
70 | UNWIND_HINT type=UNWIND_HINT_TYPE_SAVE |
71 | .endm |
72 | |
73 | .macro UNWIND_HINT_RESTORE |
74 | UNWIND_HINT type=UNWIND_HINT_TYPE_RESTORE |
75 | .endm |
76 | |
77 | #else |
78 | |
79 | #define UNWIND_HINT_UNDEFINED \ |
80 | UNWIND_HINT(UNWIND_HINT_TYPE_UNDEFINED, 0, 0, 0) |
81 | |
82 | #define UNWIND_HINT_FUNC \ |
83 | UNWIND_HINT(UNWIND_HINT_TYPE_FUNC, ORC_REG_SP, 8, 0) |
84 | |
85 | #define UNWIND_HINT_SAVE \ |
86 | UNWIND_HINT(UNWIND_HINT_TYPE_SAVE, 0, 0, 0) |
87 | |
88 | #define UNWIND_HINT_RESTORE \ |
89 | UNWIND_HINT(UNWIND_HINT_TYPE_RESTORE, 0, 0, 0) |
90 | |
91 | #endif /* __ASSEMBLY__ */ |
92 | |
93 | #endif /* _ASM_X86_UNWIND_HINTS_H */ |
94 | |