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fix calling convention and make memmove restore the g and m

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registers.

R=rsc
https://golang.org/cl/166049
This commit is contained in:
Kai Backman 2009-12-10 11:42:01 -08:00
parent 76f7803a2a
commit d08d33f389
1 changed files with 10 additions and 2 deletions
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12
src/pkg/runtime/arm/memmove.s
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@ -30,9 +30,14 @@ N = 3
TMP = 3 /* N and TMP don't overlap */
TMP1 = 4
TEXT memmove(SB), 7, $-4
// TODO(kaib): This can be done with the existing registers of LR is re-used. Same for memset.
TEXT memmove(SB), 7, $8
// save g and m
MOVW R9, 4(R13)
MOVW R10, 8(R13)
_memmove:
MOVW R(TS), to+0(FP) /* need to save for return value */
MOVW to+0(FP), R(TS)
MOVW from+4(FP), R(FROM)
MOVW n+8(FP), R(N)
@ -129,6 +134,9 @@ _f1tail:
B _f1tail
_return:
// restore g and m
MOVW 4(R13), R9
MOVW 8(R13), R10
MOVW to+0(FP), R0
RET