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Rewrite arm/ccall.s

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This commit is contained in:
ILyoan 2013-03-18 20:29:48 +09:00
parent 0f89eab89d
commit c1cacc3667
1 changed files with 10 additions and 15 deletions
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25
src/rt/arch/arm/ccall.S
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@ -5,23 +5,18 @@
.globl __morestack
.hidden __morestack
.type __morestack, %function
__morestack:
mov r3, sp
.fnstart
.save {r4, fp, lr}
push {r4, fp, lr}
.movsp r4
mov r4, sp
mov sp, r2
str r3, [sp]
str lr, [sp, #-4]
sub sp, #8
mov fp, sp
blx r1
add sp, #8
ldr lr, [sp, #-4]
ldr r3, [sp]
mov sp, r3
mov sp, r4
pop {r4, fp, lr}
mov pc, lr
.fnend