mirror of
https://github.com/xemu-project/xemu.git
synced 2024-11-29 22:40:25 +00:00
726fe04572
Add OpenRISC MMU support. Signed-off-by: Jia Liu <proljc@gmail.com> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
64 lines
1.8 KiB
C
64 lines
1.8 KiB
C
/*
|
|
* 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
|