runtime: update assembly var names after monotonic time changes

Change-Id: I721045120a4df41462c02252e2e5e8529ae2d694
Reviewed-on: https://go-review.googlesource.com/37303
Run-TryBot: Josh Bleecher Snyder <josharian@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>

src/runtime/sys_darwin_arm.s

@@ -171,9 +171,9 @@ TEXT runtime·walltime(SB), 7, $32
 	MOVW	12(R13), R1
 inreg:
 	MOVW    R1, R2  // usec
-	MOVW	R0, sec+0(FP)
+	MOVW	R0, sec_lo+0(FP)
 	MOVW	$0, R1
-	MOVW	R1, loc+4(FP)
+	MOVW	R1, sec_hi+4(FP)
 	MOVW	$1000, R3
 	MUL	R3, R2
 	MOVW	R2, nsec+8(FP)

src/runtime/sys_linux_386.s

@@ -162,8 +162,8 @@ TEXT runtime·walltime(SB), NOSPLIT, $32
 	MOVL	12(SP), BX	// nsec
 
 	// sec is in AX, nsec in BX
-	MOVL	AX, sec+0(FP)
-	MOVL	$0, sec+4(FP)
+	MOVL	AX, sec_lo+0(FP)
+	MOVL	$0, sec_hi+4(FP)
 	MOVL	BX, nsec+8(FP)
 	RET
 

src/runtime/sys_netbsd_386.s

@@ -143,9 +143,9 @@ TEXT runtime·walltime(SB), NOSPLIT, $32
 	INT	$0x80
 
 	MOVL	12(SP), AX		// sec - l32
-	MOVL	AX, sec+0(FP)
+	MOVL	AX, sec_lo+0(FP)
 	MOVL	16(SP), AX		// sec - h32
-	MOVL	AX, sec+4(FP)
+	MOVL	AX, sec_hi+4(FP)
 
 	MOVL	20(SP), BX		// nsec
 	MOVL	BX, nsec+8(FP)

src/runtime/sys_windows_386.s

@@ -455,9 +455,9 @@ loop:
 	ADDL	DI, DX
 	// wintime*100 = DX:AX, subtract startNano and return
 	SUBL	runtime·startNano+0(SB), AX
-	SBBL runtime·startNano+4(SB), DX
-	MOVL	AX, ret+0(FP)
-	MOVL	DX, ret+4(FP)
+	SBBL	runtime·startNano+4(SB), DX
+	MOVL	AX, ret_lo+0(FP)
+	MOVL	DX, ret_hi+4(FP)
 	RET
 
 TEXT time·now(SB),NOSPLIT,$0-20