diff options
Diffstat (limited to 'src/unistd/superh/pipe.s')
| -rw-r--r-- | src/unistd/superh/pipe.s | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/src/unistd/superh/pipe.s b/src/unistd/superh/pipe.s new file mode 100644 index 00000000..d865ae3a --- /dev/null +++ b/src/unistd/superh/pipe.s @@ -0,0 +1,27 @@ +.global pipe +.type pipe, @function +pipe: + mov #42, r3 + trapa #17 + + ! work around hardware bug + or r0, r0 + or r0, r0 + or r0, r0 + or r0, r0 + or r0, r0 + + cmp/pz r0 + bt 1f + + mov.l L1, r1 + braf r1 + mov r0, r4 + +1: mov.l r0, @(0,r4) + mov.l r1, @(4,r4) + rts + mov #0, r0 + +.align 2 +L1: .long __syscall_ret@PLT-(1b-.) |