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| author | Joel Sing <joel@sing.id.au> | 2020-02-21 02:30:09 +1100 |
|---|---|---|
| committer | Joel Sing <joel@sing.id.au> | 2020-03-15 07:51:41 +0000 |
| commit | 85a8526a7e8d12a31f2f1d9ebcec2841a27dc493 (patch) | |
| tree | d593e38d6bd5ff2d71ace71965323bac033a8474 /src/runtime/internal | |
| parent | 2a08f3c18127f91b22ef4f3f96c52850959b25ac (diff) | |
| download | go-85a8526a7e8d12a31f2f1d9ebcec2841a27dc493.tar.xz | |
cmd/asm,cmd/internal/obj/riscv: add LR/SC instructions
Add support for Load-Reserved (LR) and Store-Conditional (SC) instructions.
Use instructions in place of currently used defines.
Updates #36765
Change-Id: I77e660639802293ece40cfde4865ac237e3308d6
Reviewed-on: https://go-review.googlesource.com/c/go/+/220540
Reviewed-by: Cherry Zhang <cherryyz@google.com>
Diffstat (limited to 'src/runtime/internal')
| -rw-r--r-- | src/runtime/internal/atomic/atomic_riscv64.s | 12 |
1 files changed, 6 insertions, 6 deletions
diff --git a/src/runtime/internal/atomic/atomic_riscv64.s b/src/runtime/internal/atomic/atomic_riscv64.s index 80c84cf7d3..e4b7902d52 100644 --- a/src/runtime/internal/atomic/atomic_riscv64.s +++ b/src/runtime/internal/atomic/atomic_riscv64.s @@ -52,9 +52,9 @@ TEXT ·Cas(SB), NOSPLIT, $0-17 MOVW old+8(FP), A1 MOVW new+12(FP), A2 cas_again: - AMOWSC(LR_,13,10,0) // lr.w.aq a3,(a0) + LRW (A0), A3 BNE A3, A1, cas_fail - AMOWSC(SC_,14,10,12) // sc.w.aq a4,a2,(a0) + SCW A2, (A0), A4 BNE A4, ZERO, cas_again MOV $1, A0 MOVB A0, ret+16(FP) @@ -70,9 +70,9 @@ TEXT ·Cas64(SB), NOSPLIT, $0-25 MOV old+8(FP), A1 MOV new+16(FP), A2 cas_again: - AMODSC(LR_,13,10,0) // lr.d.aq a3,(a0) + LRD (A0), A3 BNE A3, A1, cas_fail - AMODSC(SC_,14,10,12) // sc.d.aq a4,a2,(a0) + SCD A2, (A0), A4 BNE A4, ZERO, cas_again MOV $1, A0 MOVB A0, ret+24(FP) @@ -84,7 +84,7 @@ cas_fail: // func Load(ptr *uint32) uint32 TEXT ·Load(SB),NOSPLIT|NOFRAME,$0-12 MOV ptr+0(FP), A0 - AMOWSC(LR_,10,10,0) + LRW (A0), A0 MOVW A0, ret+8(FP) RET @@ -100,7 +100,7 @@ TEXT ·Load8(SB),NOSPLIT|NOFRAME,$0-9 // func Load64(ptr *uint64) uint64 TEXT ·Load64(SB),NOSPLIT|NOFRAME,$0-16 MOV ptr+0(FP), A0 - AMODSC(LR_,10,10,0) + LRD (A0), A0 MOV A0, ret+8(FP) RET |