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/*
* 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 2.1 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"
static void do_unaligned_access(CPUAlphaState *env, vaddr addr, uintptr_t retaddr)
{
uint64_t pc;
uint32_t insn;
cpu_restore_state(env_cpu(env), retaddr, true);
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 */
}
#ifdef CONFIG_USER_ONLY
void alpha_cpu_record_sigbus(CPUState *cs, vaddr addr,
MMUAccessType access_type, uintptr_t retaddr)
{
AlphaCPU *cpu = ALPHA_CPU(cs);
CPUAlphaState *env = &cpu->env;
do_unaligned_access(env, addr, retaddr);
}
#else
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;
do_unaligned_access(env, addr, retaddr);
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;
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_restore(cs, retaddr);
}
#endif /* CONFIG_USER_ONLY */
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