path: root/crt/arm
diff options
authorRich Felker <>2011-09-18 16:44:54 -0400
committerRich Felker <>2011-09-18 16:44:54 -0400
commitd960d4f2cbf18ff3476c7ac03698ec253885dd8e (patch)
treec7570054ccddf4febc86c046a0b90b3021d1a457 /crt/arm
parent4f4bf0ad2e8c729de92db06318b9614ab2cdcc5c (diff)
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 'crt/arm')
1 files changed, 13 insertions, 0 deletions
diff --git a/crt/arm/crt1.s b/crt/arm/crt1.s
new file mode 100644
index 00000000..74b90949
--- /dev/null
+++ b/crt/arm/crt1.s
@@ -0,0 +1,13 @@ _start
+ mov fp,#0
+ mov lr,#0
+ ldr a2,[sp],#4
+ mov a3,sp
+ mov a4,#0
+ str fp,[sp,#-4]!
+ str a1,[sp,#-4]!
+ str fp,[sp,#-4]!
+ ldr a1,=main
+ bl __libc_start_main
+1: b 1b