diff options
| author | Rich Felker <dalias@aerifal.cx> | 2011-09-18 16:44:54 -0400 |
|---|---|---|
| committer | Rich Felker <dalias@aerifal.cx> | 2011-09-18 16:44:54 -0400 |
| commit | d960d4f2cbf18ff3476c7ac03698ec253885dd8e (patch) | |
| tree | c7570054ccddf4febc86c046a0b90b3021d1a457 /src/internal/arm | |
| parent | 4f4bf0ad2e8c729de92db06318b9614ab2cdcc5c (diff) | |
| download | musl-d960d4f2cbf18ff3476c7ac03698ec253885dd8e.tar.gz | |
initial commit of the arm port
this port assumes eabi calling conventions, eabi linux syscall
convention, and presence of the kernel helpers at 0xffff0f?0 needed
for threads support. otherwise it makes very few assumptions, and the
code should work even on armv4 without thumb support, as well as on
systems with thumb interworking. the bits headers declare this a
little endian system, but as far as i can tell the code should work
equally well on big endian.
some small details are probably broken; so far, testing has been
limited to qemu/aboriginal linux.
Diffstat (limited to 'src/internal/arm')
| -rw-r--r-- | src/internal/arm/syscall.s | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/src/internal/arm/syscall.s b/src/internal/arm/syscall.s new file mode 100644 index 00000000..c5ae25c3 --- /dev/null +++ b/src/internal/arm/syscall.s @@ -0,0 +1,15 @@ +.global __syscall +.type __syscall,%function +__syscall: + mov ip,sp + stmfd sp!,{r4,r5,r6,r7} + mov r7,r0 + mov r0,r1 + mov r1,r2 + mov r2,r3 + ldmfd ip,{r3,r4,r5,r6} + svc 0 + ldmfd sp!,{r4,r5,r6,r7} + tst lr,#1 + moveq pc,lr + bx lr |