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| author | Vladimir Azarov <avm@intermediate-node.net> | 2024-10-01 15:47:05 +0200 |
|---|---|---|
| committer | Vladimir Azarov <avm@intermediate-node.net> | 2024-10-01 15:47:05 +0200 |
| commit | 4abab5ad6c8465a7528ccdd5f49367da05f78bbd (patch) | |
| tree | ebf009bf1376a5a223a915bc27cbbd791a1316bc /src/unistd/sh/pipe.s | |
Initial version
Diffstat (limited to 'src/unistd/sh/pipe.s')
| -rw-r--r-- | src/unistd/sh/pipe.s | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/src/unistd/sh/pipe.s b/src/unistd/sh/pipe.s new file mode 100644 index 0000000..46c4908 --- /dev/null +++ b/src/unistd/sh/pipe.s @@ -0,0 +1,27 @@ +.global pipe +.type pipe, @function +pipe: + mov #42, r3 + trapa #31 + + ! 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-.) |