projects / mirror_ubuntu-kernels.git / blame
| Commit | Line | Data |
|---|---|---|
| b2441318 | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
| da6d8567 ACM |
2 | #ifndef _TOOLS_LINUX_ASM_X86_RMWcc |
| 3 | #define _TOOLS_LINUX_ASM_X86_RMWcc | |
| 4 | ||
| 5 | #ifdef CC_HAVE_ASM_GOTO | |
| 6 | ||
| 7 | #define __GEN_RMWcc(fullop, var, cc, ...) \ | |
| 8 | do { \ | |
| 9 | asm_volatile_goto (fullop "; j" cc " %l[cc_label]" \ | |
| 10 | : : "m" (var), ## __VA_ARGS__ \ | |
| 11 | : "memory" : cc_label); \ | |
| 12 | return 0; \ | |
| 13 | cc_label: \ | |
| 14 | return 1; \ | |
| 15 | } while (0) | |
| 16 | ||
| 17 | #define GEN_UNARY_RMWcc(op, var, arg0, cc) \ | |
| 18 | __GEN_RMWcc(op " " arg0, var, cc) | |
| 19 | ||
| 20 | #define GEN_BINARY_RMWcc(op, var, vcon, val, arg0, cc) \ | |
| 21 | __GEN_RMWcc(op " %1, " arg0, var, cc, vcon (val)) | |
| 22 | ||
| 23 | #else /* !CC_HAVE_ASM_GOTO */ | |
| 24 | ||
| 25 | #define __GEN_RMWcc(fullop, var, cc, ...) \ | |
| 26 | do { \ | |
| 27 | char c; \ | |
| 28 | asm volatile (fullop "; set" cc " %1" \ | |
| 29 | : "+m" (var), "=qm" (c) \ | |
| 30 | : __VA_ARGS__ : "memory"); \ | |
| 31 | return c != 0; \ | |
| 32 | } while (0) | |
| 33 | ||
| 34 | #define GEN_UNARY_RMWcc(op, var, arg0, cc) \ | |
| 35 | __GEN_RMWcc(op " " arg0, var, cc) | |
| 36 | ||
| 37 | #define GEN_BINARY_RMWcc(op, var, vcon, val, arg0, cc) \ | |
| 38 | __GEN_RMWcc(op " %2, " arg0, var, cc, vcon (val)) | |
| 39 | ||
| 40 | #endif /* CC_HAVE_ASM_GOTO */ | |
| 41 | ||
| 42 | #endif /* _TOOLS_LINUX_ASM_X86_RMWcc */ |