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-rw-r--r--src/internal/arm/syscall.s15
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