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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-28 13:14:23 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-28 13:14:23 +0000
commit73df946d56c74384511a194dd01dbe099584fd1a (patch)
treefd0bcea490dd81327ddfbb31e215439672c9a068 /src/runtime/cgo/asm_386.s
parentInitial commit. (diff)
downloadgolang-1.16-73df946d56c74384511a194dd01dbe099584fd1a.tar.xz
golang-1.16-73df946d56c74384511a194dd01dbe099584fd1a.zip
Adding upstream version 1.16.10.upstream/1.16.10upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src/runtime/cgo/asm_386.s')
-rw-r--r--src/runtime/cgo/asm_386.s29
1 files changed, 29 insertions, 0 deletions
diff --git a/src/runtime/cgo/asm_386.s b/src/runtime/cgo/asm_386.s
new file mode 100644
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+++ b/src/runtime/cgo/asm_386.s
@@ -0,0 +1,29 @@
+// Copyright 2009 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+#include "textflag.h"
+
+// Called by C code generated by cmd/cgo.
+// func crosscall2(fn, a unsafe.Pointer, n int32, ctxt uintptr)
+// Saves C callee-saved registers and calls cgocallback with three arguments.
+// fn is the PC of a func(a unsafe.Pointer) function.
+TEXT crosscall2(SB),NOSPLIT,$28-16
+ MOVL BP, 24(SP)
+ MOVL BX, 20(SP)
+ MOVL SI, 16(SP)
+ MOVL DI, 12(SP)
+
+ MOVL ctxt+12(FP), AX
+ MOVL AX, 8(SP)
+ MOVL a+4(FP), AX
+ MOVL AX, 4(SP)
+ MOVL fn+0(FP), AX
+ MOVL AX, 0(SP)
+ CALL runtime·cgocallback(SB)
+
+ MOVL 12(SP), DI
+ MOVL 16(SP), SI
+ MOVL 20(SP), BX
+ MOVL 24(SP), BP
+ RET