| .text |
| .global __clone |
| .type __clone, @function |
| __clone: |
| ! incoming: fn stack flags arg ptid tls ctid |
| ! r4 r5 r6 r7 @r15 @(4,r15) @(8,r15) |
| |
| mov #-16, r0 |
| and r0, r5 |
| |
| mov r4, r1 ! r1 = fn |
| mov r7, r2 ! r2 = arg |
| |
| mov #120, r3 ! r3 = __NR_clone |
| mov r6, r4 ! r4 = flags |
| !mov r5, r5 ! r5 = stack |
| mov.l @r15, r6 ! r6 = ptid |
| mov.l @(8,r15), r7 ! r7 = ctid |
| mov.l @(4,r15), r0 ! r0 = tls |
| trapa #31 |
| |
| or r0, r0 |
| or r0, r0 |
| or r0, r0 |
| or r0, r0 |
| or r0, r0 |
| |
| cmp/eq #0, r0 |
| bt 1f |
| |
| ! we are the parent, return |
| rts |
| nop |
| |
| 1: ! we are the child, call fn(arg) |
| mov.l 1f, r0 |
| mov r1, r5 |
| bsrf r0 |
| mov r2, r4 |
| |
| 2: mov #1, r3 ! __NR_exit |
| mov r0, r4 |
| trapa #31 |
| |
| or r0, r0 |
| or r0, r0 |
| or r0, r0 |
| or r0, r0 |
| or r0, r0 |
| |
| .align 2 |
| .hidden __shcall |
| 1: .long __shcall@PCREL+(.-2b) |
