45 lines
1.4 KiB
C
45 lines
1.4 KiB
C
|
/*
|
||
|
|
* PowerPC MMU stub handling for user mode emulation
|
||
|
|
*
|
||
|
|
* Copyright (c) 2003-2007 Jocelyn Mayer
|
||
|
|
* Copyright (c) 2013 David Gibson, IBM Corporation.
|
||
|
|
*
|
||
|
|
* 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"
|
||
|
|
|
||
|
|
int cpu_handle_mmu_fault(CPUPPCState *env, target_ulong address, int rw,
|
||
|
|
int mmu_idx)
|
||
|
|
{
|
||
|
|
int exception, error_code;
|
||
|
|
|
||
|
|
if (rw == 2) {
|
||
|
|
exception = POWERPC_EXCP_ISI;
|
||
|
|
error_code = 0x40000000;
|
||
|
|
} else {
|
||
|
|
exception = POWERPC_EXCP_DSI;
|
||
|
|
error_code = 0x40000000;
|
||
|
|
if (rw) {
|
||
|
|
error_code |= 0x02000000;
|
||
|
|
}
|
||
|
|
env->spr[SPR_DAR] = address;
|
||
|
|
env->spr[SPR_DSISR] = error_code;
|
||
|
|
}
|
||
|
|
env->exception_index = exception;
|
||
|
|
env->error_code = error_code;
|
||
|
|
|
||
|
|
return 1;
|
||
|
|
}
|