| // SPDX-License-Identifier: GPL-2.0-only |
| #ifndef __SELFTESTS_X86_HELPERS_H |
| #define __SELFTESTS_X86_HELPERS_H |
| |
| #include <asm/processor-flags.h> |
| |
| static inline unsigned long get_eflags(void) |
| { |
| unsigned long eflags; |
| |
| asm volatile ( |
| #ifdef __x86_64__ |
| "subq $128, %%rsp\n\t" |
| "pushfq\n\t" |
| "popq %0\n\t" |
| "addq $128, %%rsp" |
| #else |
| "pushfl\n\t" |
| "popl %0" |
| #endif |
| : "=r" (eflags) :: "memory"); |
| |
| return eflags; |
| } |
| |
| static inline void set_eflags(unsigned long eflags) |
| { |
| asm volatile ( |
| #ifdef __x86_64__ |
| "subq $128, %%rsp\n\t" |
| "pushq %0\n\t" |
| "popfq\n\t" |
| "addq $128, %%rsp" |
| #else |
| "pushl %0\n\t" |
| "popfl" |
| #endif |
| :: "r" (eflags) : "flags", "memory"); |
| } |
| |
| #endif /* __SELFTESTS_X86_HELPERS_H */ |
