summaryrefslogtreecommitdiff
path: root/libc/sysdeps/linux/lm32/clone.S
diff options
context:
space:
mode:
Diffstat (limited to 'libc/sysdeps/linux/lm32/clone.S')
-rw-r--r--libc/sysdeps/linux/lm32/clone.S52
1 files changed, 52 insertions, 0 deletions
diff --git a/libc/sysdeps/linux/lm32/clone.S b/libc/sysdeps/linux/lm32/clone.S
new file mode 100644
index 000000000..adc8b1a36
--- /dev/null
+++ b/libc/sysdeps/linux/lm32/clone.S
@@ -0,0 +1,52 @@
+#include <features.h>
+#include <sys/syscall.h>
+#define _ERRNO_H 1
+#include <bits/errno.h>
+
+#ifdef __NR_clone
+
+.text
+.global clone
+.type clone,@function
+.align 4
+
+clone:
+ be r1, r0, 2f
+ be r2, r0, 2f
+
+ mvi r8, __NR_clone
+ scall
+
+ mvi r3, -4095
+ bgeu r1, r3, 1f
+
+ be r1, r0, __thread_start
+
+ ret
+
+__thread_start:
+ mvi fp, 0
+ call r2
+
+ calli HIDDEN_JUMPTARGET(_exit)
+
+ /* Stop the unstoppable. */
+9:
+ bi 9b
+
+2:
+ mvi r1, -EINVAL
+1:
+ addi sp, sp, -8
+ sw (sp+4), ra
+ sw (sp+8), r1
+ calli __errno_location
+ lw r2, (sp+8)
+ lw ra, (sp+4)
+ sub r2, r0, r2
+ sw (r1+0), r2
+ mvi r1, -1
+ addi sp, sp, 8
+ ret
+
+#endif /* __NR_clone */