| // 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 |