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Unified Diff: fusl/src/unistd/sh/pipe.s

Issue 1573973002: Add a "fork" of musl as //fusl. (Closed) Base URL: https://github.com/domokit/mojo.git@master
Patch Set: Created 4 years, 11 months ago
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Index: fusl/src/unistd/sh/pipe.s
diff --git a/fusl/src/unistd/sh/pipe.s b/fusl/src/unistd/sh/pipe.s
new file mode 100644
index 0000000000000000000000000000000000000000..46c4908e7b463bfe5c9888033dc2db8172835d0b
--- /dev/null
+++ b/fusl/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-.)
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