Imported Upstream version 60upstream/60

1 files changed, 67 insertions, 0 deletions

diff --git a/src/pkg/runtime/cgo/386.S b/src/pkg/runtime/cgo/386.S
new file mode 100755
index 000000000..9abab7ebd
--- /dev/null
+++ b/src/pkg/runtime/cgo/386.S
@@ -0,0 +1,67 @@
+// 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.
+
+/*
+ * Apple still insists on underscore prefixes for C function names.
+ */
+#if defined(__APPLE__) || defined(_WIN32)
+#define EXT(s) _##s
+#else
+#define EXT(s) s
+#endif
+
+/*
+ * void crosscall_386(void (*fn)(void))
+ *
+ * Calling into the 8c tool chain, where all registers are caller save.
+ * Called from standard x86 ABI, where %ebp, %ebx, %esi,
+ * and %edi are callee-save, so they must be saved explicitly.
+ */
+.globl EXT(crosscall_386)
+EXT(crosscall_386):
+	pushl %ebp
+	movl %esp, %ebp
+	pushl %ebx
+	pushl %esi
+	pushl %edi
+
+	movl 8(%ebp), %eax	/* fn */
+	call *%eax
+
+	popl %edi
+	popl %esi
+	popl %ebx
+	popl %ebp
+	ret
+
+/*
+ * void crosscall2(void (*fn)(void*, int32), void*, int32)
+ *
+ * Save registers and call fn with two arguments.
+ */
+.globl EXT(crosscall2)
+EXT(crosscall2):
+	pushl %ebp
+	movl %esp, %ebp
+	pushl %ebx
+	pushl %esi
+	pushl %edi
+
+	pushl 16(%ebp)
+	pushl 12(%ebp)
+	mov 8(%ebp), %eax
+	call *%eax
+	addl $8,%esp
+
+	popl %edi
+	popl %esi
+	popl %ebx
+	popl %ebp
+	ret
+
+.globl EXT(__stack_chk_fail_local)
+EXT(__stack_chk_fail_local):
+1:
+	jmp 1b
+