diff options
Diffstat (limited to 'src/runtime/internal')
| -rw-r--r-- | src/runtime/internal/atomic/asm_ppc64x.s | 69 |
1 files changed, 16 insertions, 53 deletions
diff --git a/src/runtime/internal/atomic/asm_ppc64x.s b/src/runtime/internal/atomic/asm_ppc64x.s index 4a776787a2..a928e400d2 100644 --- a/src/runtime/internal/atomic/asm_ppc64x.s +++ b/src/runtime/internal/atomic/asm_ppc64x.s @@ -17,21 +17,20 @@ TEXT runtime∕internal∕atomic·Cas(SB), NOSPLIT, $0-17 MOVD ptr+0(FP), R3 MOVWZ old+8(FP), R4 MOVWZ new+12(FP), R5 -cas_again: SYNC +cas_again: LWAR (R3), R6 CMPW R6, R4 BNE cas_fail STWCCC R5, (R3) BNE cas_again MOVD $1, R3 - SYNC ISYNC MOVB R3, ret+16(FP) RET cas_fail: - MOVD $0, R3 - BR -5(PC) + MOVB R0, ret+16(FP) + RET // bool runtime∕internal∕atomic·Cas64(uint64 *ptr, uint64 old, uint64 new) // Atomically: @@ -45,21 +44,20 @@ TEXT runtime∕internal∕atomic·Cas64(SB), NOSPLIT, $0-25 MOVD ptr+0(FP), R3 MOVD old+8(FP), R4 MOVD new+16(FP), R5 -cas64_again: SYNC +cas64_again: LDAR (R3), R6 CMP R6, R4 BNE cas64_fail STDCCC R5, (R3) BNE cas64_again MOVD $1, R3 - SYNC ISYNC MOVB R3, ret+24(FP) RET cas64_fail: - MOVD $0, R3 - BR -5(PC) + MOVB R0, ret+24(FP) + RET TEXT runtime∕internal∕atomic·Casuintptr(SB), NOSPLIT, $0-25 BR runtime∕internal∕atomic·Cas64(SB) @@ -103,8 +101,7 @@ TEXT runtime∕internal∕atomic·Xadd(SB), NOSPLIT, $0-20 LWAR (R4), R3 ADD R5, R3 STWCCC R3, (R4) - BNE -4(PC) - SYNC + BNE -3(PC) ISYNC MOVW R3, ret+16(FP) RET @@ -116,8 +113,7 @@ TEXT runtime∕internal∕atomic·Xadd64(SB), NOSPLIT, $0-24 LDAR (R4), R3 ADD R5, R3 STDCCC R3, (R4) - BNE -4(PC) - SYNC + BNE -3(PC) ISYNC MOVD R3, ret+16(FP) RET @@ -128,8 +124,7 @@ TEXT runtime∕internal∕atomic·Xchg(SB), NOSPLIT, $0-20 SYNC LWAR (R4), R3 STWCCC R5, (R4) - BNE -3(PC) - SYNC + BNE -2(PC) ISYNC MOVW R3, ret+16(FP) RET @@ -140,8 +135,7 @@ TEXT runtime∕internal∕atomic·Xchg64(SB), NOSPLIT, $0-24 SYNC LDAR (R4), R3 STDCCC R5, (R4) - BNE -3(PC) - SYNC + BNE -2(PC) ISYNC MOVD R3, ret+16(FP) RET @@ -171,26 +165,12 @@ TEXT runtime∕internal∕atomic·Store64(SB), NOSPLIT, $0-16 TEXT runtime∕internal∕atomic·Or8(SB), NOSPLIT, $0-9 MOVD ptr+0(FP), R3 MOVBZ val+8(FP), R4 - // Align ptr down to 4 bytes so we can use 32-bit load/store. - // R5 = (R3 << 0) & ~3 - RLDCR $0, R3, $~3, R5 - // Compute val shift. -#ifdef GOARCH_ppc64 - // Big endian. ptr = ptr ^ 3 - XOR $3, R3 -#endif - // R6 = ((ptr & 3) * 8) = (ptr << 3) & (3*8) - RLDC $3, R3, $(3*8), R6 - // Shift val for aligned ptr. R4 = val << R6 - SLD R6, R4, R4 - -again: SYNC - LWAR (R5), R6 +again: + LBAR (R3), R6 OR R4, R6 - STWCCC R6, (R5) + STBCCC R6, (R3) BNE again - SYNC ISYNC RET @@ -198,28 +178,11 @@ again: TEXT runtime∕internal∕atomic·And8(SB), NOSPLIT, $0-9 MOVD ptr+0(FP), R3 MOVBZ val+8(FP), R4 - // Align ptr down to 4 bytes so we can use 32-bit load/store. - // R5 = (R3 << 0) & ~3 - RLDCR $0, R3, $~3, R5 - // Compute val shift. -#ifdef GOARCH_ppc64 - // Big endian. ptr = ptr ^ 3 - XOR $3, R3 -#endif - // R6 = ((ptr & 3) * 8) = (ptr << 3) & (3*8) - RLDC $3, R3, $(3*8), R6 - // Shift val for aligned ptr. R4 = val << R6 | ^(0xFF << R6) - MOVD $0xFF, R7 - SLD R6, R4 - SLD R6, R7 - XOR $-1, R7 - OR R7, R4 -again: SYNC - LWAR (R5), R6 +again: + LBAR (R3), R6 AND R4, R6 - STWCCC R6, (R5) + STBCCC R6, (R3) BNE again - SYNC ISYNC RET |