projects / linux-2.6-block.git / blame
| Commit | Line | Data |
|---|---|---|
| 0c44c2d0 PZ |
1 | #ifndef _ASM_X86_RMWcc |
| 2 | #define _ASM_X86_RMWcc | |
| 3 | ||
| ba741e35 PA |
4 | #if !defined(__GCC_ASM_FLAG_OUTPUTS__) && defined(CC_HAVE_ASM_GOTO) |
| 5 | ||
| 6 | /* Use asm goto */ | |
| 0c44c2d0 PZ |
7 | |
| 8 | #define __GEN_RMWcc(fullop, var, cc, ...) \ | |
| 9 | do { \ | |
| 18fe5822 | 10 | asm_volatile_goto (fullop "; j" #cc " %l[cc_label]" \ |
| 0c44c2d0 PZ |
11 | : : "m" (var), ## __VA_ARGS__ \ |
| 12 | : "memory" : cc_label); \ | |
| 13 | return 0; \ | |
| 14 | cc_label: \ | |
| 15 | return 1; \ | |
| 16 | } while (0) | |
| 17 | ||
| 18 | #define GEN_UNARY_RMWcc(op, var, arg0, cc) \ | |
| 19 | __GEN_RMWcc(op " " arg0, var, cc) | |
| 20 | ||
| e0f6dec3 PA |
21 | #define GEN_BINARY_RMWcc(op, var, vcon, val, arg0, cc) \ |
| 22 | __GEN_RMWcc(op " %1, " arg0, var, cc, vcon (val)) | |
| 0c44c2d0 | 23 | |
| ba741e35 PA |
24 | #else /* defined(__GCC_ASM_FLAG_OUTPUTS__) || !defined(CC_HAVE_ASM_GOTO) */ |
| 25 | ||
| 26 | /* Use flags output or a set instruction */ | |
| 0c44c2d0 PZ |
27 | |
| 28 | #define __GEN_RMWcc(fullop, var, cc, ...) \ | |
| 29 | do { \ | |
| 117780ee | 30 | bool c; \ |
| ba741e35 PA |
31 | asm volatile (fullop ";" CC_SET(cc) \ |
| 32 | : "+m" (var), CC_OUT(cc) (c) \ | |
| 0c44c2d0 | 33 | : __VA_ARGS__ : "memory"); \ |
| 117780ee | 34 | return c; \ |
| 0c44c2d0 PZ |
35 | } while (0) |
| 36 | ||
| 37 | #define GEN_UNARY_RMWcc(op, var, arg0, cc) \ | |
| 38 | __GEN_RMWcc(op " " arg0, var, cc) | |
| 39 | ||
| e0f6dec3 PA |
40 | #define GEN_BINARY_RMWcc(op, var, vcon, val, arg0, cc) \ |
| 41 | __GEN_RMWcc(op " %2, " arg0, var, cc, vcon (val)) | |
| 0c44c2d0 | 42 | |
| ba741e35 | 43 | #endif /* defined(__GCC_ASM_FLAG_OUTPUTS__) || !defined(CC_HAVE_ASM_GOTO) */ |
| 0c44c2d0 PZ |
44 | |
| 45 | #endif /* _ASM_X86_RMWcc */ |