initial commit of the arm port

[musl] / src / thread / arm / clone.s

diff --git a/src/thread/arm/clone.s b/src/thread/arm/clone.s
new file mode 100644 (file)
index 0000000..65cd3f5
--- /dev/null
+++ b/src/thread/arm/clone.s
@@ -0,0 +1,35 @@
+.text
+.global __clone
+.weak clone
+.type   __clone,%function
+.type   clone,%function
+__clone:
+clone:
+       stmfd sp!,{r4,r5,r6,r7}
+       mov r7,#120
+       mov r6,r3
+       mov r5,r0
+       mov r0,r2
+       and r1,r1,#-16
+       ldr r2,[sp,#16]
+       ldr r3,[sp,#20]
+       ldr r4,[sp,#24]
+       svc 0
+       tst r0,r0
+       beq 1f
+       ldmfd sp!,{r4,r5,r6,r7}
+       tst lr,#1
+       moveq pc,lr
+       bx lr
+
+1:     mov r0,r6
+       tst r5,#1
+       bne 1f
+       mov lr,pc
+       mov pc,r5
+2:     mov r1,r0
+       mov r0,#1
+       svc
+
+1:     blx r5
+       b 2b