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Unified Diff: fusl/src/thread/sh/syscall_cp.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/thread/sh/syscall_cp.s
diff --git a/fusl/src/thread/sh/syscall_cp.s b/fusl/src/thread/sh/syscall_cp.s
new file mode 100644
index 0000000000000000000000000000000000000000..bb848ef3b671429b101c247cf28d898b58cd66eb
--- /dev/null
+++ b/fusl/src/thread/sh/syscall_cp.s
@@ -0,0 +1,45 @@
+.text
+.global __cp_begin
+.hidden __cp_begin
+.global __cp_end
+.hidden __cp_end
+.global __cp_cancel
+.hidden __cp_cancel
+.hidden __cancel
+.global __syscall_cp_asm
+.hidden __syscall_cp_asm
+.type __syscall_cp_asm, @function
+__syscall_cp_asm:
+
+__cp_begin:
+ mov.l @r4, r4
+ tst r4, r4
+ bf __cp_cancel
+ mov r5, r3
+ mov r6, r4
+ mov r7, r5
+ mov.l @r15, r6
+ mov.l @(4,r15), r7
+ mov.l @(8,r15), r0
+ mov.l @(12,r15), r1
+ trapa #31
+
+__cp_end:
+ ! work around hardware bug
+ or r0, r0
+ or r0, r0
+ or r0, r0
+ or r0, r0
+ or r0, r0
+
+ rts
+ nop
+
+__cp_cancel:
+ mov.l 2f, r0
+ braf r0
+ nop
+1:
+
+.align 2
+2: .long __cancel@PCREL-(1b-.)
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