98670d47cd
The MC68040 MMU provides the size of the access that triggers the page fault. This size is set in the Special Status Word which is written in the stack frame of the access fault exception. So we need the size in m68k_cpu_unassigned_access() and m68k_cpu_handle_mmu_fault(). To be able to do that, this patch modifies the prototype of handle_mmu_fault handler, tlb_fill() and probe_write(). do_unassigned_access() already includes a size parameter. This patch also updates handle_mmu_fault handlers and tlb_fill() of all targets (only parameter, no code change). Signed-off-by: Laurent Vivier <laurent@vivier.eu> Reviewed-by: David Hildenbrand <david@redhat.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20180118193846.24953-2-laurent@vivier.eu>
84 lines
2.7 KiB
C
84 lines
2.7 KiB
C
/*
|
|
* Helpers for loads and stores
|
|
*
|
|
* Copyright (c) 2007 Jocelyn Mayer
|
|
*
|
|
* 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 "qemu/osdep.h"
|
|
#include "cpu.h"
|
|
#include "exec/helper-proto.h"
|
|
#include "exec/exec-all.h"
|
|
#include "exec/cpu_ldst.h"
|
|
|
|
/* Softmmu support */
|
|
#ifndef CONFIG_USER_ONLY
|
|
void alpha_cpu_do_unaligned_access(CPUState *cs, vaddr addr,
|
|
MMUAccessType access_type,
|
|
int mmu_idx, uintptr_t retaddr)
|
|
{
|
|
AlphaCPU *cpu = ALPHA_CPU(cs);
|
|
CPUAlphaState *env = &cpu->env;
|
|
uint64_t pc;
|
|
uint32_t insn;
|
|
|
|
cpu_restore_state(cs, retaddr);
|
|
|
|
pc = env->pc;
|
|
insn = cpu_ldl_code(env, pc);
|
|
|
|
env->trap_arg0 = addr;
|
|
env->trap_arg1 = insn >> 26; /* opcode */
|
|
env->trap_arg2 = (insn >> 21) & 31; /* dest regno */
|
|
cs->exception_index = EXCP_UNALIGN;
|
|
env->error_code = 0;
|
|
cpu_loop_exit(cs);
|
|
}
|
|
|
|
void alpha_cpu_do_transaction_failed(CPUState *cs, hwaddr physaddr,
|
|
vaddr addr, unsigned size,
|
|
MMUAccessType access_type,
|
|
int mmu_idx, MemTxAttrs attrs,
|
|
MemTxResult response, uintptr_t retaddr)
|
|
{
|
|
AlphaCPU *cpu = ALPHA_CPU(cs);
|
|
CPUAlphaState *env = &cpu->env;
|
|
|
|
cpu_restore_state(cs, retaddr);
|
|
|
|
env->trap_arg0 = addr;
|
|
env->trap_arg1 = access_type == MMU_DATA_STORE ? 1 : 0;
|
|
cs->exception_index = EXCP_MCHK;
|
|
env->error_code = 0;
|
|
cpu_loop_exit(cs);
|
|
}
|
|
|
|
/* try to fill the TLB and return an exception if error. If retaddr is
|
|
NULL, it means that the function was called in C code (i.e. not
|
|
from generated code or from helper.c) */
|
|
/* XXX: fix it to restore all registers */
|
|
void tlb_fill(CPUState *cs, target_ulong addr, int size,
|
|
MMUAccessType access_type, int mmu_idx, uintptr_t retaddr)
|
|
{
|
|
int ret;
|
|
|
|
ret = alpha_cpu_handle_mmu_fault(cs, addr, size, access_type, mmu_idx);
|
|
if (unlikely(ret != 0)) {
|
|
/* Exception index and error code are already set */
|
|
cpu_loop_exit_restore(cs, retaddr);
|
|
}
|
|
}
|
|
#endif /* CONFIG_USER_ONLY */
|