| // 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. |
| |
| .file "gcc_386.S" |
| |
| /* |
| * Windows still insists on underscore prefixes for C function names. |
| */ |
| #if defined(_WIN32) |
| #define EXT(s) _##s |
| #else |
| #define EXT(s) s |
| #endif |
| |
| /* |
| * void crosscall1(void (*fn)(void), void (*setg_gcc)(void*), void *g) |
| * |
| * Calling into the gc 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(crosscall1) |
| EXT(crosscall1): |
| pushl %ebp |
| movl %esp, %ebp |
| pushl %ebx |
| pushl %esi |
| pushl %edi |
| |
| movl 16(%ebp), %eax /* g */ |
| pushl %eax |
| movl 12(%ebp), %eax /* setg_gcc */ |
| call *%eax |
| popl %eax |
| |
| movl 8(%ebp), %eax /* fn */ |
| call *%eax |
| |
| popl %edi |
| popl %esi |
| popl %ebx |
| popl %ebp |
| ret |
| |
| #ifdef __ELF__ |
| .section .note.GNU-stack,"",@progbits |
| #endif |
