| Arnaldo Carvalho de Melo | da6d856 | 2015-04-07 11:53:41 -0300 | [diff] [blame] | 1 | #ifndef _TOOLS_LINUX_ASM_X86_RMWcc |
| 2 | #define _TOOLS_LINUX_ASM_X86_RMWcc |
| 3 | |
| 4 | #ifdef CC_HAVE_ASM_GOTO |
| 5 | |
| 6 | #define __GEN_RMWcc(fullop, var, cc, ...) \ |
| 7 | do { \ |
| 8 | asm_volatile_goto (fullop "; j" cc " %l[cc_label]" \ |
| 9 | : : "m" (var), ## __VA_ARGS__ \ |
| 10 | : "memory" : cc_label); \ |
| 11 | return 0; \ |
| 12 | cc_label: \ |
| 13 | return 1; \ |
| 14 | } while (0) |
| 15 | |
| 16 | #define GEN_UNARY_RMWcc(op, var, arg0, cc) \ |
| 17 | __GEN_RMWcc(op " " arg0, var, cc) |
| 18 | |
| 19 | #define GEN_BINARY_RMWcc(op, var, vcon, val, arg0, cc) \ |
| 20 | __GEN_RMWcc(op " %1, " arg0, var, cc, vcon (val)) |
| 21 | |
| 22 | #else /* !CC_HAVE_ASM_GOTO */ |
| 23 | |
| 24 | #define __GEN_RMWcc(fullop, var, cc, ...) \ |
| 25 | do { \ |
| 26 | char c; \ |
| 27 | asm volatile (fullop "; set" cc " %1" \ |
| 28 | : "+m" (var), "=qm" (c) \ |
| 29 | : __VA_ARGS__ : "memory"); \ |
| 30 | return c != 0; \ |
| 31 | } while (0) |
| 32 | |
| 33 | #define GEN_UNARY_RMWcc(op, var, arg0, cc) \ |
| 34 | __GEN_RMWcc(op " " arg0, var, cc) |
| 35 | |
| 36 | #define GEN_BINARY_RMWcc(op, var, vcon, val, arg0, cc) \ |
| 37 | __GEN_RMWcc(op " %2, " arg0, var, cc, vcon (val)) |
| 38 | |
| 39 | #endif /* CC_HAVE_ASM_GOTO */ |
| 40 | |
| 41 | #endif /* _TOOLS_LINUX_ASM_X86_RMWcc */ |