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| author | Russ Cox <rsc@golang.org> | 2015-07-30 10:54:53 -0400 |
|---|---|---|
| committer | Russ Cox <rsc@golang.org> | 2015-07-30 15:48:29 +0000 |
| commit | c9d2c7f0d26a9619069a3cb2291333174b6db63f (patch) | |
| tree | b7f8960efe1ef2cccb7c5e495f5558ffc5be24cb /src/runtime/sys_netbsd_arm.s | |
| parent | a1e422071cd8122b4b93bbdeb02d0ea646519955 (diff) | |
| download | go-c9d2c7f0d26a9619069a3cb2291333174b6db63f.tar.gz go-c9d2c7f0d26a9619069a3cb2291333174b6db63f.zip | |
runtime: replace divide with multiply in runtime.usleep on arm
We want to adjust the DIV calling convention to use m,
and usleep can be called without an m, so switch to a
multiplication by the reciprocal (and test).
Step toward a fix for #6699 and #10486.
Change-Id: Iccf76a18432d835e48ec64a2fa34a0e4d6d4b955
Reviewed-on: https://go-review.googlesource.com/12898
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Diffstat (limited to 'src/runtime/sys_netbsd_arm.s')
| -rw-r--r-- | src/runtime/sys_netbsd_arm.s | 7 |
1 files changed, 2 insertions, 5 deletions
diff --git a/src/runtime/sys_netbsd_arm.s b/src/runtime/sys_netbsd_arm.s index 24c32a6158..ae669ce76b 100644 --- a/src/runtime/sys_netbsd_arm.s +++ b/src/runtime/sys_netbsd_arm.s @@ -104,15 +104,12 @@ TEXT runtime·lwp_tramp(SB),NOSPLIT,$0 TEXT runtime·usleep(SB),NOSPLIT,$16 MOVW usec+0(FP), R0 - MOVW R0, R2 - MOVW $1000000, R1 - DIV R1, R0 + CALL runtime·usplitR0(SB) // 0(R13) is the saved LR, don't use it MOVW R0, 4(R13) // tv_sec.low MOVW $0, R0 MOVW R0, 8(R13) // tv_sec.high - MOD R1, R2 - MOVW $1000, R1 + MOVW $1000, R2 MUL R1, R2 MOVW R2, 12(R13) // tv_nsec |