summaryrefslogtreecommitdiff
path: root/src/setjmp/arm
diff options
context:
space:
mode:
authorRich Felker <dalias@aerifal.cx>2012-07-27 00:17:09 -0400
committerRich Felker <dalias@aerifal.cx>2012-07-27 00:17:09 -0400
commit5aac5e2189f322a54a49958d928f30e1c9505561 (patch)
tree258ba3778b2a1d8c474e31f2a510dd710e1506dd /src/setjmp/arm
parente1b9c1b01be294cc2865acfe33544d5e5cc50eb4 (diff)
downloadmusl-5aac5e2189f322a54a49958d928f30e1c9505561.tar.gz
optimize arm setjmp/longjmp register saving/loading
the original code was wrongly based on how it would be done in thumb mode, but that's not needed because musl's asm only targets arm.
Diffstat (limited to 'src/setjmp/arm')
-rw-r--r--src/setjmp/arm/longjmp.s4
-rw-r--r--src/setjmp/arm/setjmp.s4
2 files changed, 2 insertions, 6 deletions
diff --git a/src/setjmp/arm/longjmp.s b/src/setjmp/arm/longjmp.s
index 037cb3d3..690a0089 100644
--- a/src/setjmp/arm/longjmp.s
+++ b/src/setjmp/arm/longjmp.s
@@ -7,9 +7,7 @@ longjmp:
mov ip,r0
movs r0,r1
moveq r0,#1
- ldmia ip!, {v1,v2,v3,v4,v5,v6,sl,fp}
- ldr sp,[ip],#4
- ldr lr,[ip],#4
+ ldmia ip!, {v1,v2,v3,v4,v5,v6,sl,fp,sp,lr}
tst lr,#1
moveq pc,lr
bx lr
diff --git a/src/setjmp/arm/setjmp.s b/src/setjmp/arm/setjmp.s
index 41e02d82..6985caab 100644
--- a/src/setjmp/arm/setjmp.s
+++ b/src/setjmp/arm/setjmp.s
@@ -8,9 +8,7 @@ __setjmp:
_setjmp:
setjmp:
mov ip,r0
- stmia ip!,{v1,v2,v3,v4,v5,v6,sl,fp}
- mov r2,sp
- stmia ip!,{r2,lr}
+ stmia ip!,{v1,v2,v3,v4,v5,v6,sl,fp,sp,lr}
mov r0,#0
tst lr,#1
moveq pc,lr