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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 | #ifndef _ASM_X86_ASM_H #define _ASM_X86_ASM_H #ifdef __ASSEMBLY__ # define __ASM_FORM(x) x # define __ASM_FORM_RAW(x) x # define __ASM_FORM_COMMA(x) x, #else # define __ASM_FORM(x) " " #x " " # define __ASM_FORM_RAW(x) #x # define __ASM_FORM_COMMA(x) " " #x "," #endif #ifdef CONFIG_X86_32 # define __ASM_SEL(a,b) __ASM_FORM(a) # define __ASM_SEL_RAW(a,b) __ASM_FORM_RAW(a) #else # define __ASM_SEL(a,b) __ASM_FORM(b) # define __ASM_SEL_RAW(a,b) __ASM_FORM_RAW(b) #endif #define __ASM_SIZE(inst, ...) __ASM_SEL(inst##l##__VA_ARGS__, \ inst##q##__VA_ARGS__) #define __ASM_REG(reg) __ASM_SEL_RAW(e##reg, r##reg) #define _ASM_PTR __ASM_SEL(.long, .quad) #define _ASM_ALIGN __ASM_SEL(.balign 4, .balign 8) #define _ASM_MOV __ASM_SIZE(mov) #define _ASM_INC __ASM_SIZE(inc) #define _ASM_DEC __ASM_SIZE(dec) #define _ASM_ADD __ASM_SIZE(add) #define _ASM_SUB __ASM_SIZE(sub) #define _ASM_XADD __ASM_SIZE(xadd) #define _ASM_AX __ASM_REG(ax) #define _ASM_BX __ASM_REG(bx) #define _ASM_CX __ASM_REG(cx) #define _ASM_DX __ASM_REG(dx) #define _ASM_SP __ASM_REG(sp) #define _ASM_BP __ASM_REG(bp) #define _ASM_SI __ASM_REG(si) #define _ASM_DI __ASM_REG(di) /* Exception table entry */ #ifdef __ASSEMBLY__ # define _ASM_EXTABLE(from,to) \ .pushsection "__ex_table","a" ; \ .balign 8 ; \ .long (from) - . ; \ .long (to) - . ; \ .popsection # define _ASM_EXTABLE_EX(from,to) \ .pushsection "__ex_table","a" ; \ .balign 8 ; \ .long (from) - . ; \ .long (to) - . + 0x7ffffff0 ; \ .popsection # define _ASM_NOKPROBE(entry) \ .pushsection "_kprobe_blacklist","aw" ; \ _ASM_ALIGN ; \ _ASM_PTR (entry); \ .popsection .macro ALIGN_DESTINATION /* check for bad alignment of destination */ movl %edi,%ecx andl $7,%ecx jz 102f /* already aligned */ subl $8,%ecx negl %ecx subl %ecx,%edx 100: movb (%rsi),%al 101: movb %al,(%rdi) incq %rsi incq %rdi decl %ecx jnz 100b 102: .section .fixup,"ax" 103: addl %ecx,%edx /* ecx is zerorest also */ jmp copy_user_handle_tail .previous _ASM_EXTABLE(100b,103b) _ASM_EXTABLE(101b,103b) .endm #else # define _ASM_EXTABLE(from,to) \ " .pushsection \"__ex_table\",\"a\"\n" \ " .balign 8\n" \ " .long (" #from ") - .\n" \ " .long (" #to ") - .\n" \ " .popsection\n" # define _ASM_EXTABLE_EX(from,to) \ " .pushsection \"__ex_table\",\"a\"\n" \ " .balign 8\n" \ " .long (" #from ") - .\n" \ " .long (" #to ") - . + 0x7ffffff0\n" \ " .popsection\n" /* For C file, we already have NOKPROBE_SYMBOL macro */ #endif #endif /* _ASM_X86_ASM_H */ |