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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 */ |