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+// 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
+
+#ifdef __ELF__
+.section .note.GNU-stack,"",@progbits
+#endif