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| author | Austin Clements <austin@google.com> | 2019-03-28 14:58:06 -0400 |
|---|---|---|
| committer | Austin Clements <austin@google.com> | 2019-05-03 19:25:37 +0000 |
| commit | 4a4e05b0b166ef17d62789d7ca6d58aeb846c5d1 (patch) | |
| tree | 678cafc2a6988214970602778ce15b85a8840ff9 /src/runtime/internal/atomic/sys_linux_arm.s | |
| parent | 7fcba81549b7088e8f4cda3a2702d948de42839e (diff) | |
| download | go-4a4e05b0b166ef17d62789d7ca6d58aeb846c5d1.tar.xz | |
cmd/compile,runtime/internal/atomic: add Load8
Change-Id: Id52a5730cf9207ee7ccebac4ef12791dc5720e7c
Reviewed-on: https://go-review.googlesource.com/c/go/+/172283
Run-TryBot: Austin Clements <austin@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: David Chase <drchase@google.com>
Diffstat (limited to 'src/runtime/internal/atomic/sys_linux_arm.s')
| -rw-r--r-- | src/runtime/internal/atomic/sys_linux_arm.s | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/src/runtime/internal/atomic/sys_linux_arm.s b/src/runtime/internal/atomic/sys_linux_arm.s index 0fd39d4ee8..df62f6c8ad 100644 --- a/src/runtime/internal/atomic/sys_linux_arm.s +++ b/src/runtime/internal/atomic/sys_linux_arm.s @@ -104,3 +104,19 @@ store: native_barrier2: DMB MB_ISH RET + +TEXT ·Load8(SB),NOSPLIT,$0-5 + MOVW addr+0(FP), R0 + MOVB (R0), R1 + + MOVB runtime·goarm(SB), R11 + CMP $7, R11 + BGE native_barrier + BL memory_barrier<>(SB) + B end +native_barrier: + DMB MB_ISH +end: + MOVB R1, ret+4(FP) + RET + |