Commit | Line | Data |
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1965aae3 PA |
1 | #ifndef _ASM_X86_ASM_H |
2 | #define _ASM_X86_ASM_H | |
e845c06b | 3 | |
e6e07d8a JF |
4 | #ifdef __ASSEMBLY__ |
5 | # define __ASM_FORM(x) x | |
3e9b2327 | 6 | # define __ASM_FORM_RAW(x) x |
a750036f | 7 | # define __ASM_FORM_COMMA(x) x, |
e6e07d8a JF |
8 | #else |
9 | # define __ASM_FORM(x) " " #x " " | |
3e9b2327 | 10 | # define __ASM_FORM_RAW(x) #x |
a750036f | 11 | # define __ASM_FORM_COMMA(x) " " #x "," |
e6e07d8a | 12 | #endif |
8ee5797a | 13 | |
e6e07d8a JF |
14 | #ifdef CONFIG_X86_32 |
15 | # define __ASM_SEL(a,b) __ASM_FORM(a) | |
3e9b2327 | 16 | # define __ASM_SEL_RAW(a,b) __ASM_FORM_RAW(a) |
e845c06b | 17 | #else |
e6e07d8a | 18 | # define __ASM_SEL(a,b) __ASM_FORM(b) |
3e9b2327 | 19 | # define __ASM_SEL_RAW(a,b) __ASM_FORM_RAW(b) |
e6e07d8a | 20 | #endif |
e845c06b | 21 | |
4625cd63 JB |
22 | #define __ASM_SIZE(inst, ...) __ASM_SEL(inst##l##__VA_ARGS__, \ |
23 | inst##q##__VA_ARGS__) | |
3e9b2327 | 24 | #define __ASM_REG(reg) __ASM_SEL_RAW(e##reg, r##reg) |
e845c06b | 25 | |
e6e07d8a JF |
26 | #define _ASM_PTR __ASM_SEL(.long, .quad) |
27 | #define _ASM_ALIGN __ASM_SEL(.balign 4, .balign 8) | |
8ee5797a | 28 | |
8df9676d | 29 | #define _ASM_MOV __ASM_SIZE(mov) |
e6e07d8a JF |
30 | #define _ASM_INC __ASM_SIZE(inc) |
31 | #define _ASM_DEC __ASM_SIZE(dec) | |
32 | #define _ASM_ADD __ASM_SIZE(add) | |
33 | #define _ASM_SUB __ASM_SIZE(sub) | |
34 | #define _ASM_XADD __ASM_SIZE(xadd) | |
8df9676d | 35 | |
40faf463 | 36 | #define _ASM_AX __ASM_REG(ax) |
2528de43 GC |
37 | #define _ASM_BX __ASM_REG(bx) |
38 | #define _ASM_CX __ASM_REG(cx) | |
40faf463 | 39 | #define _ASM_DX __ASM_REG(dx) |
8df9676d PA |
40 | #define _ASM_SP __ASM_REG(sp) |
41 | #define _ASM_BP __ASM_REG(bp) | |
42 | #define _ASM_SI __ASM_REG(si) | |
43 | #define _ASM_DI __ASM_REG(di) | |
e845c06b | 44 | |
ff3554b4 PA |
45 | /* |
46 | * Macros to generate condition code outputs from inline assembly, | |
47 | * The output operand must be type "bool". | |
48 | */ | |
49 | #ifdef __GCC_ASM_FLAG_OUTPUTS__ | |
50 | # define CC_SET(c) "\n\t/* output condition code " #c "*/\n" | |
51 | # define CC_OUT(c) "=@cc" #c | |
52 | #else | |
53 | # define CC_SET(c) "\n\tset" #c " %[_cc_" #c "]\n" | |
54 | # define CC_OUT(c) [_cc_ ## c] "=qm" | |
55 | #endif | |
56 | ||
a34746bc | 57 | /* Exception table entry */ |
709972b1 | 58 | #ifdef __ASSEMBLY__ |
548acf19 | 59 | # define _ASM_EXTABLE_HANDLE(from, to, handler) \ |
535c0c34 | 60 | .pushsection "__ex_table","a" ; \ |
548acf19 | 61 | .balign 4 ; \ |
70627654 PA |
62 | .long (from) - . ; \ |
63 | .long (to) - . ; \ | |
548acf19 | 64 | .long (handler) - . ; \ |
535c0c34 PA |
65 | .popsection |
66 | ||
548acf19 TL |
67 | # define _ASM_EXTABLE(from, to) \ |
68 | _ASM_EXTABLE_HANDLE(from, to, ex_handler_default) | |
69 | ||
70 | # define _ASM_EXTABLE_FAULT(from, to) \ | |
71 | _ASM_EXTABLE_HANDLE(from, to, ex_handler_fault) | |
72 | ||
73 | # define _ASM_EXTABLE_EX(from, to) \ | |
74 | _ASM_EXTABLE_HANDLE(from, to, ex_handler_ext) | |
376e2424 MH |
75 | |
76 | # define _ASM_NOKPROBE(entry) \ | |
77 | .pushsection "_kprobe_blacklist","aw" ; \ | |
78 | _ASM_ALIGN ; \ | |
79 | _ASM_PTR (entry); \ | |
80 | .popsection | |
9e6b13f7 BP |
81 | |
82 | .macro ALIGN_DESTINATION | |
83 | /* check for bad alignment of destination */ | |
84 | movl %edi,%ecx | |
85 | andl $7,%ecx | |
86 | jz 102f /* already aligned */ | |
87 | subl $8,%ecx | |
88 | negl %ecx | |
89 | subl %ecx,%edx | |
90 | 100: movb (%rsi),%al | |
91 | 101: movb %al,(%rdi) | |
92 | incq %rsi | |
93 | incq %rdi | |
94 | decl %ecx | |
95 | jnz 100b | |
96 | 102: | |
97 | .section .fixup,"ax" | |
98 | 103: addl %ecx,%edx /* ecx is zerorest also */ | |
99 | jmp copy_user_handle_tail | |
100 | .previous | |
101 | ||
102 | _ASM_EXTABLE(100b,103b) | |
103 | _ASM_EXTABLE(101b,103b) | |
104 | .endm | |
105 | ||
709972b1 | 106 | #else |
548acf19 TL |
107 | # define _EXPAND_EXTABLE_HANDLE(x) #x |
108 | # define _ASM_EXTABLE_HANDLE(from, to, handler) \ | |
535c0c34 | 109 | " .pushsection \"__ex_table\",\"a\"\n" \ |
548acf19 | 110 | " .balign 4\n" \ |
70627654 PA |
111 | " .long (" #from ") - .\n" \ |
112 | " .long (" #to ") - .\n" \ | |
548acf19 | 113 | " .long (" _EXPAND_EXTABLE_HANDLE(handler) ") - .\n" \ |
535c0c34 PA |
114 | " .popsection\n" |
115 | ||
548acf19 TL |
116 | # define _ASM_EXTABLE(from, to) \ |
117 | _ASM_EXTABLE_HANDLE(from, to, ex_handler_default) | |
118 | ||
119 | # define _ASM_EXTABLE_FAULT(from, to) \ | |
120 | _ASM_EXTABLE_HANDLE(from, to, ex_handler_fault) | |
121 | ||
122 | # define _ASM_EXTABLE_EX(from, to) \ | |
123 | _ASM_EXTABLE_HANDLE(from, to, ex_handler_ext) | |
124 | ||
376e2424 | 125 | /* For C file, we already have NOKPROBE_SYMBOL macro */ |
709972b1 | 126 | #endif |
a34746bc | 127 | |
1965aae3 | 128 | #endif /* _ASM_X86_ASM_H */ |