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/* 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_FAULT(from, to) \ _ASM_EXTABLE_HANDLE(from, to, ex_handler_fault) # define _ASM_EXTABLE_EX(from, to) \ _ASM_EXTABLE_HANDLE(from, to, ex_handler_ext) # define _ASM_EXTABLE_REFCOUNT(from, to) \ _ASM_EXTABLE_HANDLE(from, to, ex_handler_refcount) # define _ASM_NOKPROBE(entry) \ .pushsection "_kprobe_blacklist","aw" ; \ _ASM_ALIGN ; \ _ASM_PTR (entry); \ .popsection #else # 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_FAULT(from, to) \ _ASM_EXTABLE_HANDLE(from, to, ex_handler_fault) # define _ASM_EXTABLE_EX(from, to) \ _ASM_EXTABLE_HANDLE(from, to, ex_handler_ext) # define _ASM_EXTABLE_REFCOUNT(from, to) \ _ASM_EXTABLE_HANDLE(from, to, ex_handler_refcount) /* For C file, we already have NOKPROBE_SYMBOL macro */ #endif #ifndef __ASSEMBLY__ /* * 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 #endif /* _ASM_X86_ASM_H */
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