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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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 | /* SPDX-License-Identifier: GPL-2.0 */ #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 #include <linux/stringify.h> # define __ASM_FORM(x) " " __stringify(x) " " # define __ASM_FORM_RAW(x) __stringify(x) # define __ASM_FORM_COMMA(x) " " __stringify(x) "," #endif #ifndef __x86_64__ /* 32 bit */ # define __ASM_SEL(a,b) __ASM_FORM(a) # define __ASM_SEL_RAW(a,b) __ASM_FORM_RAW(a) #else /* 64 bit */ # 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_MUL __ASM_SIZE(mul) #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) #ifndef __x86_64__ /* 32 bit */ #define _ASM_ARG1 _ASM_AX #define _ASM_ARG2 _ASM_DX #define _ASM_ARG3 _ASM_CX #define _ASM_ARG1L eax #define _ASM_ARG2L edx #define _ASM_ARG3L ecx #define _ASM_ARG1W ax #define _ASM_ARG2W dx #define _ASM_ARG3W cx #define _ASM_ARG1B al #define _ASM_ARG2B dl #define _ASM_ARG3B cl #else /* 64 bit */ #define _ASM_ARG1 _ASM_DI #define _ASM_ARG2 _ASM_SI #define _ASM_ARG3 _ASM_DX #define _ASM_ARG4 _ASM_CX #define _ASM_ARG5 r8 #define _ASM_ARG6 r9 #define _ASM_ARG1Q rdi #define _ASM_ARG2Q rsi #define _ASM_ARG3Q rdx #define _ASM_ARG4Q rcx #define _ASM_ARG5Q r8 #define _ASM_ARG6Q r9 #define _ASM_ARG1L edi #define _ASM_ARG2L esi #define _ASM_ARG3L edx #define _ASM_ARG4L ecx #define _ASM_ARG5L r8d #define _ASM_ARG6L r9d #define _ASM_ARG1W di #define _ASM_ARG2W si #define _ASM_ARG3W dx #define _ASM_ARG4W cx #define _ASM_ARG5W r8w #define _ASM_ARG6W r9w #define _ASM_ARG1B dil #define _ASM_ARG2B sil #define _ASM_ARG3B dl #define _ASM_ARG4B cl #define _ASM_ARG5B r8b #define _ASM_ARG6B r9b #endif /* * Macros to generate condition code outputs from inline assembly, * The output operand must be type "bool". */ #ifdef __GCC_ASM_FLAG_OUTPUTS__ # define CC_SET(c) "\n\t/* output condition code " #c "*/\n" # define CC_OUT(c) "=@cc" #c #else # define CC_SET(c) "\n\tset" #c " %[_cc_" #c "]\n" # define CC_OUT(c) [_cc_ ## c] "=qm" #endif /* Exception table entry */ #ifdef __ASSEMBLY__ # define _ASM_EXTABLE_HANDLE(from, to, handler) \ .pushsection "__ex_table","a" ; \ .balign 4 ; \ .long (from) - . ; \ .long (to) - . ; \ .long (handler) - . ; \ .popsection # define _ASM_EXTABLE(from, to) \ _ASM_EXTABLE_HANDLE(from, to, ex_handler_default) # define _ASM_EXTABLE_UA(from, to) \ _ASM_EXTABLE_HANDLE(from, to, ex_handler_uaccess) # define _ASM_EXTABLE_CPY(from, to) \ _ASM_EXTABLE_HANDLE(from, to, ex_handler_copy) # define _ASM_EXTABLE_FAULT(from, to) \ _ASM_EXTABLE_HANDLE(from, to, ex_handler_fault) # ifdef CONFIG_KPROBES # define _ASM_NOKPROBE(entry) \ .pushsection "_kprobe_blacklist","aw" ; \ _ASM_ALIGN ; \ _ASM_PTR (entry); \ .popsection # else # define _ASM_NOKPROBE(entry) # endif #else /* ! __ASSEMBLY__ */ # define _EXPAND_EXTABLE_HANDLE(x) #x # define _ASM_EXTABLE_HANDLE(from, to, handler) \ " .pushsection \"__ex_table\",\"a\"\n" \ " .balign 4\n" \ " .long (" #from ") - .\n" \ " .long (" #to ") - .\n" \ " .long (" _EXPAND_EXTABLE_HANDLE(handler) ") - .\n" \ " .popsection\n" # define _ASM_EXTABLE(from, to) \ _ASM_EXTABLE_HANDLE(from, to, ex_handler_default) # define _ASM_EXTABLE_UA(from, to) \ _ASM_EXTABLE_HANDLE(from, to, ex_handler_uaccess) # define _ASM_EXTABLE_CPY(from, to) \ _ASM_EXTABLE_HANDLE(from, to, ex_handler_copy) # define _ASM_EXTABLE_FAULT(from, to) \ _ASM_EXTABLE_HANDLE(from, to, ex_handler_fault) /* For C file, we already have NOKPROBE_SYMBOL macro */ /* * This output constraint should be used for any inline asm which has a "call" * instruction. Otherwise the asm may be inserted before the frame pointer * gets set up by the containing function. If you forget to do this, objtool * may print a "call without frame pointer save/setup" warning. */ register unsigned long current_stack_pointer asm(_ASM_SP); #define ASM_CALL_CONSTRAINT "+r" (current_stack_pointer) #endif /* __ASSEMBLY__ */ #endif /* _ASM_X86_ASM_H */ |