diff options
Diffstat (limited to 'target-openrisc/mmu_helper.c')
| -rw-r--r-- | target-openrisc/mmu_helper.c | 63 |
1 files changed, 63 insertions, 0 deletions
diff --git a/target-openrisc/mmu_helper.c b/target-openrisc/mmu_helper.c new file mode 100644 index 0000000000..59ed371ae0 --- /dev/null +++ b/target-openrisc/mmu_helper.c @@ -0,0 +1,63 @@ +/* + * OpenRISC MMU helper routines + * + * Copyright (c) 2011-2012 Jia Liu <proljc@gmail.com> + * Zhizhou Zhang <etouzh@gmail.com> + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, see <http://www.gnu.org/licenses/>. + */ + +#include "cpu.h" + +#ifndef CONFIG_USER_ONLY +#include "softmmu_exec.h" +#define MMUSUFFIX _mmu + +#define SHIFT 0 +#include "softmmu_template.h" + +#define SHIFT 1 +#include "softmmu_template.h" + +#define SHIFT 2 +#include "softmmu_template.h" + +#define SHIFT 3 +#include "softmmu_template.h" + +void tlb_fill(CPUOpenRISCState *env, target_ulong addr, int is_write, + int mmu_idx, uintptr_t retaddr) +{ + TranslationBlock *tb; + unsigned long pc; + int ret; + + ret = cpu_openrisc_handle_mmu_fault(env, addr, is_write, mmu_idx); + + if (ret) { + if (retaddr) { + /* now we have a real cpu fault. */ + pc = (unsigned long)retaddr; + tb = tb_find_pc(pc); + if (tb) { + /* the PC is inside the translated code. It means that we + have a virtual CPU fault. */ + cpu_restore_state(tb, env, pc); + } + } + /* Raise Exception. */ + cpu_loop_exit(env); + } +} +#endif |