projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 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 | |
| a34746bc | 45 | /* Exception table entry */ |
| 709972b1 | 46 | #ifdef __ASSEMBLY__ |
| 535c0c34 PA |
47 | # define _ASM_EXTABLE(from,to) \ |
| 48 | .pushsection "__ex_table","a" ; \ | |
| 70627654 PA |
49 | .balign 8 ; \ |
| 50 | .long (from) - . ; \ | |
| 51 | .long (to) - . ; \ | |
| 535c0c34 PA |
52 | .popsection |
| 53 | ||
| 54 | # define _ASM_EXTABLE_EX(from,to) \ | |
| 55 | .pushsection "__ex_table","a" ; \ | |
| 70627654 PA |
56 | .balign 8 ; \ |
| 57 | .long (from) - . ; \ | |
| 58 | .long (to) - . + 0x7ffffff0 ; \ | |
| d4541805 | 59 | .popsection |
| 376e2424 MH |
60 | |
| 61 | # define _ASM_NOKPROBE(entry) \ | |
| 62 | .pushsection "_kprobe_blacklist","aw" ; \ | |
| 63 | _ASM_ALIGN ; \ | |
| 64 | _ASM_PTR (entry); \ | |
| 65 | .popsection | |
| 9e6b13f7 BP |
66 | |
| 67 | .macro ALIGN_DESTINATION | |
| 68 | /* check for bad alignment of destination */ | |
| 69 | movl %edi,%ecx | |
| 70 | andl $7,%ecx | |
| 71 | jz 102f /* already aligned */ | |
| 72 | subl $8,%ecx | |
| 73 | negl %ecx | |
| 74 | subl %ecx,%edx | |
| 75 | 100: movb (%rsi),%al | |
| 76 | 101: movb %al,(%rdi) | |
| 77 | incq %rsi | |
| 78 | incq %rdi | |
| 79 | decl %ecx | |
| 80 | jnz 100b | |
| 81 | 102: | |
| 82 | .section .fixup,"ax" | |
| 83 | 103: addl %ecx,%edx /* ecx is zerorest also */ | |
| 84 | jmp copy_user_handle_tail | |
| 85 | .previous | |
| 86 | ||
| 87 | _ASM_EXTABLE(100b,103b) | |
| 88 | _ASM_EXTABLE(101b,103b) | |
| 89 | .endm | |
| 90 | ||
| 709972b1 | 91 | #else |
| 535c0c34 PA |
92 | # define _ASM_EXTABLE(from,to) \ |
| 93 | " .pushsection \"__ex_table\",\"a\"\n" \ | |
| 70627654 PA |
94 | " .balign 8\n" \ |
| 95 | " .long (" #from ") - .\n" \ | |
| 96 | " .long (" #to ") - .\n" \ | |
| 535c0c34 PA |
97 | " .popsection\n" |
| 98 | ||
| 99 | # define _ASM_EXTABLE_EX(from,to) \ | |
| 100 | " .pushsection \"__ex_table\",\"a\"\n" \ | |
| 70627654 PA |
101 | " .balign 8\n" \ |
| 102 | " .long (" #from ") - .\n" \ | |
| 103 | " .long (" #to ") - . + 0x7ffffff0\n" \ | |
| d4541805 | 104 | " .popsection\n" |
| 376e2424 | 105 | /* For C file, we already have NOKPROBE_SYMBOL macro */ |
| 709972b1 | 106 | #endif |
| a34746bc | 107 | |
| 1965aae3 | 108 | #endif /* _ASM_X86_ASM_H */ |