12345678910111213141516171819202122232425262728293031323334353637383940414243444546474849505152535455565758596061626364656667686970 |
- #define _ERRNO_H
- #include <bits/errno.h>
- #include <sys/syscall.h>
- #ifdef __NR_clone
- .text
- .global clone
- .type clone,%function
- .align 4
- clone:
- addi sp,sp,-8
- mov r8,r4
- stw ra,4(sp)
- stw r16,0(sp)
- mov r4,r6
- movi r2,-EINVAL
-
-
- beq r8,zero,CLONE_ERROR_LABEL
- beq r5,zero,CLONE_ERROR_LABEL
-
-
- movi r2,TRAP_ID_SYSCALL
- movi r3,__NR_clone
- trap
-
-
- mov r4,r7
- bne r2,zero,CLONE_ERROR_LABEL
- callr r8
-
-
- mov r4,r2
- movi r3,__NR_exit
- trap
-
- CLONE_ERROR_LABEL:
- movi r3,-4096
- sub r16,zero,r2
- bgeu r3,r2,CLONE_OK
-
-
- call __errno_location
- stw r16,0(r2)
- movi r2,-1
- CLONE_OK:
- ldw ra,4(sp)
- ldw r16,0(sp)
- addi sp,sp,8
- ret
- .size clone,.-clone
- #endif
|