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Merge pull request #34 from Amanieu/thumbv6m_asm 

Fix inline assembly to work on ARMv6-M
This commit is contained in:
Jorge Aparicio 2016-08-13 11:48:03 -05:00 committed by GitHub
parent 7ac5155ba6 97217e3ad9
commit ac9f96fb9c
1 changed files with 10 additions and 7 deletions
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17
src/arm.rs
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@ -9,7 +9,8 @@ pub unsafe fn __aeabi_uidivmod() {
sub sp, sp, #4
mov r2, sp
bl __udivmodsi4
ldr r1, [sp], #4
ldr r1, [sp]
add sp, sp, #4
pop {pc}");
intrinsics::unreachable();
}
@ -17,13 +18,15 @@ pub unsafe fn __aeabi_uidivmod() {
#[naked]
#[cfg_attr(not(test), no_mangle)]
pub unsafe fn __aeabi_uldivmod() {
asm!("push {lr}
sub r12, sp, #12
str r12, [sp, #-20]!
asm!("push {r4, lr}
sub sp, sp, #16
add r4, sp, #8
str r4, [sp]
bl __udivmoddi4
ldrd r2, r3, [sp, #8]
add sp, sp, #20
pop {pc}");
ldr r2, [sp, #8]
ldr r3, [sp, #12]
add sp, sp, #16
pop {r4, pc}");
intrinsics::unreachable();
}