root/trunk/src/recompiler/hostregs_helper.h
| Revision 11982, 2.6 kB (checked in by vboxsync, 4 months ago) |
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| 1 | /* |
| 2 | * Save/restore host registrs. |
| 3 | * |
| 4 | * Copyright (c) 2007 CodeSourcery |
| 5 | * |
| 6 | * This library is free software; you can redistribute it and/or |
| 7 | * modify it under the terms of the GNU Lesser General Public |
| 8 | * License as published by the Free Software Foundation; either |
| 9 | * version 2 of the License, or (at your option) any later version. |
| 10 | * |
| 11 | * This library is distributed in the hope that it will be useful, |
| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 14 | * Lesser General Public License for more details. |
| 15 | * |
| 16 | * You should have received a copy of the GNU Lesser General Public |
| 17 | * License along with this library; if not, write to the Free Software |
| 18 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 19 | */ |
| 20 | |
| 21 | /* |
| 22 | * Sun LGPL Disclaimer: For the avoidance of doubt, except that if any license choice |
| 23 | * other than GPL or LGPL is available it will apply instead, Sun elects to use only |
| 24 | * the Lesser General Public License version 2.1 (LGPLv2) at this time for any software where |
| 25 | * a choice of LGPL license versions is made available with the language indicating |
| 26 | * that LGPLv2 or any later version may be used, or where a choice of which version |
| 27 | * of the LGPL is applied is otherwise unspecified. |
| 28 | */ |
| 29 | |
| 30 | /* The GCC global register vairable extension is used to reserve some |
| 31 | host registers for use by dyngen. However only the core parts of the |
| 32 | translation engine are compiled with these settings. We must manually |
| 33 | save/restore these registers when called from regular code. |
| 34 | It is not sufficient to save/restore T0 et. al. as these may be declared |
| 35 | with a datatype smaller than the actual register. */ |
| 36 | |
| 37 | #if defined(DECLARE_HOST_REGS) |
| 38 | |
| 39 | #define DO_REG(REG) \ |
| 40 | register host_reg_t reg_AREG##REG asm(AREG##REG); \ |
| 41 | volatile host_reg_t saved_AREG##REG; |
| 42 | |
| 43 | #elif defined(SAVE_HOST_REGS) |
| 44 | |
| 45 | #define DO_REG(REG) \ |
| 46 | __asm__ __volatile__ ("" : "=r" (reg_AREG##REG)); \ |
| 47 | saved_AREG##REG = reg_AREG##REG; |
| 48 | |
| 49 | #else |
| 50 | |
| 51 | #define DO_REG(REG) \ |
| 52 | reg_AREG##REG = saved_AREG##REG; \ |
| 53 | __asm__ __volatile__ ("" : : "r" (reg_AREG##REG)); |
| 54 | |
| 55 | #endif |
| 56 | |
| 57 | #ifdef AREG0 |
| 58 | DO_REG(0) |
| 59 | #endif |
| 60 | |
| 61 | #ifdef AREG1 |
| 62 | DO_REG(1) |
| 63 | #endif |
| 64 | |
| 65 | #ifdef AREG2 |
| 66 | DO_REG(2) |
| 67 | #endif |
| 68 | |
| 69 | #ifdef AREG3 |
| 70 | DO_REG(3) |
| 71 | #endif |
| 72 | |
| 73 | #ifdef AREG4 |
| 74 | DO_REG(4) |
| 75 | #endif |
| 76 | |
| 77 | #ifdef AREG5 |
| 78 | DO_REG(5) |
| 79 | #endif |
| 80 | |
| 81 | #ifdef AREG6 |
| 82 | DO_REG(6) |
| 83 | #endif |
| 84 | |
| 85 | #ifdef AREG7 |
| 86 | DO_REG(7) |
| 87 | #endif |
| 88 | |
| 89 | #ifdef AREG8 |
| 90 | DO_REG(8) |
| 91 | #endif |
| 92 | |
| 93 | #ifdef AREG9 |
| 94 | DO_REG(9) |
| 95 | #endif |
| 96 | |
| 97 | #ifdef AREG10 |
| 98 | DO_REG(10) |
| 99 | #endif |
| 100 | |
| 101 | #ifdef AREG11 |
| 102 | DO_REG(11) |
| 103 | #endif |
| 104 | |
| 105 | #undef SAVE_HOST_REGS |
| 106 | #undef DECLARE_HOST_REGS |
| 107 | #undef DO_REG |
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