| /* | |
| * arch/sh/pipe.S | |
| * | |
| * The pipe system call is special on sh: it returns | |
| * the two file descriptors in r0 and r1. | |
| */ | |
| #include <asm/unistd.h> | |
| .section ".text.syscall","ax" | |
| .align 2 | |
| .globl pipe | |
| .type pipe,@function | |
| pipe: | |
| mov #__NR_pipe, r3 | |
| trapa #0x10 | |
| mov.l 1f,r2 | |
| cmp/hs r0,r2 | |
| bt/s 3f | |
| neg r0,r2 | |
| mov.l 2f,r3 | |
| mov.l r2,@r3 | |
| rts | |
| mov #-1,r0 | |
| 3: | |
| mov.l r0, @r4 | |
| mov.l r1, @(4, r4) | |
| rts | |
| mov #0,r0 | |
| .align 2 | |
| 1: .long -4096 /* Errno limit */ | |
| 2: .long errno | |
| .size pipe,.-pipe |