40643d7c0f
- mark privileged opcodes with ring check; - make debug exception on exception handler entry. Signed-off-by: Max Filippov <jcmvbkbc@gmail.com> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
103 lines
3.1 KiB
C
103 lines
3.1 KiB
C
/*
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* Copyright (c) 2011, Max Filippov, Open Source and Linux Lab.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* * Neither the name of the Open Source and Linux Lab nor the
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* names of its contributors may be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
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* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "cpu.h"
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#include "dyngen-exec.h"
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#include "helpers.h"
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#include "host-utils.h"
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#define MMUSUFFIX _mmu
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#define SHIFT 0
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#include "softmmu_template.h"
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#define SHIFT 1
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#include "softmmu_template.h"
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#define SHIFT 2
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#include "softmmu_template.h"
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#define SHIFT 3
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#include "softmmu_template.h"
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void tlb_fill(target_ulong addr, int is_write, int mmu_idx, void *retaddr)
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{
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tlb_set_page(cpu_single_env,
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addr & ~(TARGET_PAGE_SIZE - 1),
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addr & ~(TARGET_PAGE_SIZE - 1),
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PAGE_READ | PAGE_WRITE | PAGE_EXEC,
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mmu_idx, TARGET_PAGE_SIZE);
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}
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void HELPER(exception)(uint32_t excp)
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{
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env->exception_index = excp;
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cpu_loop_exit(env);
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}
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void HELPER(exception_cause)(uint32_t pc, uint32_t cause)
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{
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uint32_t vector;
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env->pc = pc;
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if (env->sregs[PS] & PS_EXCM) {
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if (env->config->ndepc) {
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env->sregs[DEPC] = pc;
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} else {
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env->sregs[EPC1] = pc;
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}
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vector = EXC_DOUBLE;
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} else {
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env->sregs[EPC1] = pc;
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vector = (env->sregs[PS] & PS_UM) ? EXC_USER : EXC_KERNEL;
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}
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env->sregs[EXCCAUSE] = cause;
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env->sregs[PS] |= PS_EXCM;
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HELPER(exception)(vector);
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}
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void HELPER(exception_cause_vaddr)(uint32_t pc, uint32_t cause, uint32_t vaddr)
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{
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env->sregs[EXCVADDR] = vaddr;
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HELPER(exception_cause)(pc, cause);
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}
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uint32_t HELPER(nsa)(uint32_t v)
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{
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if (v & 0x80000000) {
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v = ~v;
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}
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return v ? clz32(v) - 1 : 31;
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}
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uint32_t HELPER(nsau)(uint32_t v)
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{
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return v ? clz32(v) : 32;
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}
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