runtime: runtime.usleep() bugfix on darwin/amd64 and linux/arm
pkg/runtime/sys_darwin_amd64.s: fixes syscall select nr
pkg/runtime/sys_linux_arm.s: uses newselect instead of the now unimplemented
(old) select, also fixes the wrong div/mod statements in runtime.usleep.
Fixes #2633
R=golang-dev, dave, rsc
CC=golang-dev
https://golang.org/cl/5504096
diff --git a/src/pkg/runtime/sys_darwin_amd64.s b/src/pkg/runtime/sys_darwin_amd64.s
index 86f9936..e0dbdb7 100644
--- a/src/pkg/runtime/sys_darwin_amd64.s
+++ b/src/pkg/runtime/sys_darwin_amd64.s
@@ -175,7 +175,7 @@
MOVL $0, DX
MOVL $0, R10
MOVQ SP, R8
- MOVL $(0x2000000+23), AX
+ MOVL $(0x2000000+93), AX
SYSCALL
RET
diff --git a/src/pkg/runtime/sys_linux_arm.s b/src/pkg/runtime/sys_linux_arm.s
index e0e4135..c3a828a 100644
--- a/src/pkg/runtime/sys_linux_arm.s
+++ b/src/pkg/runtime/sys_linux_arm.s
@@ -34,7 +34,7 @@
#define SYS_gettid (SYS_BASE + 224)
#define SYS_tkill (SYS_BASE + 238)
#define SYS_sched_yield (SYS_BASE + 158)
-#define SYS_select (SYS_BASE + 82)
+#define SYS_select (SYS_BASE + 142) // newselect
#define ARM_BASE (SYS_BASE + 0x0f0000)
#define SYS_ARM_cacheflush (ARM_BASE + 2)
@@ -313,10 +313,10 @@
MOVW usec+0(FP), R0
MOVW R0, R1
MOVW $1000000, R2
- DIV R1, R0
- MOD R2, R0
- MOVW R1, 4(SP)
- MOVW R2, 8(SP)
+ DIV R2, R0
+ MOD R2, R1
+ MOVW R0, 4(SP)
+ MOVW R1, 8(SP)
MOVW $0, R0
MOVW $0, R1
MOVW $0, R2
