| Gabe Black | 36b2409 | 2011-11-16 23:01:37 +0000 | [diff] [blame] | 1 | /* |
| 2 | * This file is part of the coreboot project. |
| 3 | * |
| 4 | * Copyright (C) 2009 coresystems GmbH |
| 5 | * |
| 6 | * This program is free software; you can redistribute it and/or modify |
| 7 | * it under the terms of the GNU General Public License as published by |
| 8 | * the Free Software Foundation; version 2 or later of the License. |
| 9 | * |
| 10 | * This program is distributed in the hope that it will be useful, |
| 11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 13 | * GNU General Public License for more details. |
| 14 | * |
| 15 | * You should have received a copy of the GNU General Public License |
| 16 | * along with this program; if not, write to the Free Software |
| 17 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA, 02110-1301 USA |
| 18 | */ |
| 19 | |
| 20 | #ifdef __GNUC__ |
| 21 | |
| 22 | /* |
| 23 | * GCC's libgcc handling is quite broken. While the libgcc functions |
| 24 | * are always regparm(0) the code that calls them uses whatever the |
| 25 | * compiler call specifies. Therefore we need a wrapper around those |
| 26 | * functions. See gcc bug PR41055 for more information. |
| 27 | */ |
| 28 | #define WRAP_LIBGCC_CALL(type, name) \ |
| 29 | type __normal_##name(type a, type b) __attribute__((regparm(0))); \ |
| 30 | type __wrap_##name(type a, type b); \ |
| 31 | type __wrap_##name(type a, type b) { return __normal_##name(a, b); } |
| 32 | |
| 33 | WRAP_LIBGCC_CALL(long long, __divdi3) |
| 34 | WRAP_LIBGCC_CALL(unsigned long long, __udivdi3) |
| 35 | WRAP_LIBGCC_CALL(long long, __moddi3) |
| 36 | WRAP_LIBGCC_CALL(unsigned long long, __umoddi3) |
| 37 | |
| 38 | #endif |