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-rw-r--r--include/asm-x86/calling.h194
1 files changed, 100 insertions, 94 deletions
diff --git a/include/asm-x86/calling.h b/include/asm-x86/calling.h
index 6f4f63af96e1..f13e62e2cb3e 100644
--- a/include/asm-x86/calling.h
+++ b/include/asm-x86/calling.h
@@ -1,162 +1,168 @@
1/* 1/*
2 * Some macros to handle stack frames in assembly. 2 * Some macros to handle stack frames in assembly.
3 */ 3 */
4 4
5#define R15 0
6#define R14 8
7#define R13 16
8#define R12 24
9#define RBP 32
10#define RBX 40
5 11
6#define R15 0
7#define R14 8
8#define R13 16
9#define R12 24
10#define RBP 32
11#define RBX 40
12/* arguments: interrupts/non tracing syscalls only save upto here*/ 12/* arguments: interrupts/non tracing syscalls only save upto here*/
13#define R11 48 13#define R11 48
14#define R10 56 14#define R10 56
15#define R9 64 15#define R9 64
16#define R8 72 16#define R8 72
17#define RAX 80 17#define RAX 80
18#define RCX 88 18#define RCX 88
19#define RDX 96 19#define RDX 96
20#define RSI 104 20#define RSI 104
21#define RDI 112 21#define RDI 112
22#define ORIG_RAX 120 /* + error_code */ 22#define ORIG_RAX 120 /* + error_code */
23/* end of arguments */ 23/* end of arguments */
24
24/* cpu exception frame or undefined in case of fast syscall. */ 25/* cpu exception frame or undefined in case of fast syscall. */
25#define RIP 128 26#define RIP 128
26#define CS 136 27#define CS 136
27#define EFLAGS 144 28#define EFLAGS 144
28#define RSP 152 29#define RSP 152
29#define SS 160 30#define SS 160
30#define ARGOFFSET R11 31
31#define SWFRAME ORIG_RAX 32#define ARGOFFSET R11
33#define SWFRAME ORIG_RAX
32 34
33 .macro SAVE_ARGS addskip=0,norcx=0,nor891011=0 35 .macro SAVE_ARGS addskip=0, norcx=0, nor891011=0
34 subq $9*8+\addskip,%rsp 36 subq $9*8+\addskip, %rsp
35 CFI_ADJUST_CFA_OFFSET 9*8+\addskip 37 CFI_ADJUST_CFA_OFFSET 9*8+\addskip
36 movq %rdi,8*8(%rsp) 38 movq %rdi, 8*8(%rsp)
37 CFI_REL_OFFSET rdi,8*8 39 CFI_REL_OFFSET rdi, 8*8
38 movq %rsi,7*8(%rsp) 40 movq %rsi, 7*8(%rsp)
39 CFI_REL_OFFSET rsi,7*8 41 CFI_REL_OFFSET rsi, 7*8
40 movq %rdx,6*8(%rsp) 42 movq %rdx, 6*8(%rsp)
41 CFI_REL_OFFSET rdx,6*8 43 CFI_REL_OFFSET rdx, 6*8
42 .if \norcx 44 .if \norcx
43 .else 45 .else
44 movq %rcx,5*8(%rsp) 46 movq %rcx, 5*8(%rsp)
45 CFI_REL_OFFSET rcx,5*8 47 CFI_REL_OFFSET rcx, 5*8
46 .endif 48 .endif
47 movq %rax,4*8(%rsp) 49 movq %rax, 4*8(%rsp)
48 CFI_REL_OFFSET rax,4*8 50 CFI_REL_OFFSET rax, 4*8
49 .if \nor891011 51 .if \nor891011
50 .else 52 .else
51 movq %r8,3*8(%rsp) 53 movq %r8, 3*8(%rsp)
52 CFI_REL_OFFSET r8,3*8 54 CFI_REL_OFFSET r8, 3*8
53 movq %r9,2*8(%rsp) 55 movq %r9, 2*8(%rsp)
54 CFI_REL_OFFSET r9,2*8 56 CFI_REL_OFFSET r9, 2*8
55 movq %r10,1*8(%rsp) 57 movq %r10, 1*8(%rsp)
56 CFI_REL_OFFSET r10,1*8 58 CFI_REL_OFFSET r10, 1*8
57 movq %r11,(%rsp) 59 movq %r11, (%rsp)
58 CFI_REL_OFFSET r11,0*8 60 CFI_REL_OFFSET r11, 0*8
59 .endif 61 .endif
60 .endm 62 .endm
61 63
62#define ARG_SKIP 9*8 64#define ARG_SKIP 9*8
63 .macro RESTORE_ARGS skiprax=0,addskip=0,skiprcx=0,skipr11=0,skipr8910=0,skiprdx=0 65
66 .macro RESTORE_ARGS skiprax=0, addskip=0, skiprcx=0, skipr11=0, \
67 skipr8910=0, skiprdx=0
64 .if \skipr11 68 .if \skipr11
65 .else 69 .else
66 movq (%rsp),%r11 70 movq (%rsp), %r11
67 CFI_RESTORE r11 71 CFI_RESTORE r11
68 .endif 72 .endif
69 .if \skipr8910 73 .if \skipr8910
70 .else 74 .else
71 movq 1*8(%rsp),%r10 75 movq 1*8(%rsp), %r10
72 CFI_RESTORE r10 76 CFI_RESTORE r10
73 movq 2*8(%rsp),%r9 77 movq 2*8(%rsp), %r9
74 CFI_RESTORE r9 78 CFI_RESTORE r9
75 movq 3*8(%rsp),%r8 79 movq 3*8(%rsp), %r8
76 CFI_RESTORE r8 80 CFI_RESTORE r8
77 .endif 81 .endif
78 .if \skiprax 82 .if \skiprax
79 .else 83 .else
80 movq 4*8(%rsp),%rax 84 movq 4*8(%rsp), %rax
81 CFI_RESTORE rax 85 CFI_RESTORE rax
82 .endif 86 .endif
83 .if \skiprcx 87 .if \skiprcx
84 .else 88 .else
85 movq 5*8(%rsp),%rcx 89 movq 5*8(%rsp), %rcx
86 CFI_RESTORE rcx 90 CFI_RESTORE rcx
87 .endif 91 .endif
88 .if \skiprdx 92 .if \skiprdx
89 .else 93 .else
90 movq 6*8(%rsp),%rdx 94 movq 6*8(%rsp), %rdx
91 CFI_RESTORE rdx 95 CFI_RESTORE rdx
92 .endif 96 .endif
93 movq 7*8(%rsp),%rsi 97 movq 7*8(%rsp), %rsi
94 CFI_RESTORE rsi 98 CFI_RESTORE rsi
95 movq 8*8(%rsp),%rdi 99 movq 8*8(%rsp), %rdi
96 CFI_RESTORE rdi 100 CFI_RESTORE rdi
97 .if ARG_SKIP+\addskip > 0 101 .if ARG_SKIP+\addskip > 0
98 addq $ARG_SKIP+\addskip,%rsp 102 addq $ARG_SKIP+\addskip, %rsp
99 CFI_ADJUST_CFA_OFFSET -(ARG_SKIP+\addskip) 103 CFI_ADJUST_CFA_OFFSET -(ARG_SKIP+\addskip)
100 .endif 104 .endif
101 .endm 105 .endm
102 106
103 .macro LOAD_ARGS offset 107 .macro LOAD_ARGS offset
104 movq \offset(%rsp),%r11 108 movq \offset(%rsp), %r11
105 movq \offset+8(%rsp),%r10 109 movq \offset+8(%rsp), %r10
106 movq \offset+16(%rsp),%r9 110 movq \offset+16(%rsp), %r9
107 movq \offset+24(%rsp),%r8 111 movq \offset+24(%rsp), %r8
108 movq \offset+40(%rsp),%rcx 112 movq \offset+40(%rsp), %rcx
109 movq \offset+48(%rsp),%rdx 113 movq \offset+48(%rsp), %rdx
110 movq \offset+56(%rsp),%rsi 114 movq \offset+56(%rsp), %rsi
111 movq \offset+64(%rsp),%rdi 115 movq \offset+64(%rsp), %rdi
112 movq \offset+72(%rsp),%rax 116 movq \offset+72(%rsp), %rax
113 .endm 117 .endm
114 118
115#define REST_SKIP 6*8 119#define REST_SKIP 6*8
120
116 .macro SAVE_REST 121 .macro SAVE_REST
117 subq $REST_SKIP,%rsp 122 subq $REST_SKIP, %rsp
118 CFI_ADJUST_CFA_OFFSET REST_SKIP 123 CFI_ADJUST_CFA_OFFSET REST_SKIP
119 movq %rbx,5*8(%rsp) 124 movq %rbx, 5*8(%rsp)
120 CFI_REL_OFFSET rbx,5*8 125 CFI_REL_OFFSET rbx, 5*8
121 movq %rbp,4*8(%rsp) 126 movq %rbp, 4*8(%rsp)
122 CFI_REL_OFFSET rbp,4*8 127 CFI_REL_OFFSET rbp, 4*8
123 movq %r12,3*8(%rsp) 128 movq %r12, 3*8(%rsp)
124 CFI_REL_OFFSET r12,3*8 129 CFI_REL_OFFSET r12, 3*8
125 movq %r13,2*8(%rsp) 130 movq %r13, 2*8(%rsp)
126 CFI_REL_OFFSET r13,2*8 131 CFI_REL_OFFSET r13, 2*8
127 movq %r14,1*8(%rsp) 132 movq %r14, 1*8(%rsp)
128 CFI_REL_OFFSET r14,1*8 133 CFI_REL_OFFSET r14, 1*8
129 movq %r15,(%rsp) 134 movq %r15, (%rsp)
130 CFI_REL_OFFSET r15,0*8 135 CFI_REL_OFFSET r15, 0*8
131 .endm 136 .endm
132 137
133 .macro RESTORE_REST 138 .macro RESTORE_REST
134 movq (%rsp),%r15 139 movq (%rsp), %r15
135 CFI_RESTORE r15 140 CFI_RESTORE r15
136 movq 1*8(%rsp),%r14 141 movq 1*8(%rsp), %r14
137 CFI_RESTORE r14 142 CFI_RESTORE r14
138 movq 2*8(%rsp),%r13 143 movq 2*8(%rsp), %r13
139 CFI_RESTORE r13 144 CFI_RESTORE r13
140 movq 3*8(%rsp),%r12 145 movq 3*8(%rsp), %r12
141 CFI_RESTORE r12 146 CFI_RESTORE r12
142 movq 4*8(%rsp),%rbp 147 movq 4*8(%rsp), %rbp
143 CFI_RESTORE rbp 148 CFI_RESTORE rbp
144 movq 5*8(%rsp),%rbx 149 movq 5*8(%rsp), %rbx
145 CFI_RESTORE rbx 150 CFI_RESTORE rbx
146 addq $REST_SKIP,%rsp 151 addq $REST_SKIP, %rsp
147 CFI_ADJUST_CFA_OFFSET -(REST_SKIP) 152 CFI_ADJUST_CFA_OFFSET -(REST_SKIP)
148 .endm 153 .endm
149 154
150 .macro SAVE_ALL 155 .macro SAVE_ALL
151 SAVE_ARGS 156 SAVE_ARGS
152 SAVE_REST 157 SAVE_REST
153 .endm 158 .endm
154 159
155 .macro RESTORE_ALL addskip=0 160 .macro RESTORE_ALL addskip=0
156 RESTORE_REST 161 RESTORE_REST
157 RESTORE_ARGS 0,\addskip 162 RESTORE_ARGS 0, \addskip
158 .endm 163 .endm
159 164
160 .macro icebp 165 .macro icebp
161 .byte 0xf1 166 .byte 0xf1
162 .endm 167 .endm
168
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