mirror of
https://github.com/xemu-project/xemu.git
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target/xtensa: extract interrupt and exception helpers
Move helper functions related to interrupt and exception handling from op_helper.c and helper.c to exc_helper.c. No functional changes. Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
This commit is contained in:
parent
8803bfea0e
commit
8d918d656a
@ -8,6 +8,7 @@ obj-$(CONFIG_SOFTMMU) += monitor.o xtensa-semi.o
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obj-y += xtensa-isa.o
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obj-y += translate.o op_helper.o helper.o cpu.o
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obj-$(CONFIG_SOFTMMU) += dbg_helper.o
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obj-y += exc_helper.o
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obj-y += fpu_helper.o
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obj-y += gdbstub.o
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obj-$(CONFIG_SOFTMMU) += mmu_helper.o
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258
target/xtensa/exc_helper.c
Normal file
258
target/xtensa/exc_helper.c
Normal file
@ -0,0 +1,258 @@
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/*
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* Copyright (c) 2011 - 2019, 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 "qemu/osdep.h"
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#include "qemu/main-loop.h"
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#include "cpu.h"
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#include "exec/helper-proto.h"
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#include "qemu/host-utils.h"
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#include "exec/exec-all.h"
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void HELPER(exception)(CPUXtensaState *env, uint32_t excp)
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{
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CPUState *cs = CPU(xtensa_env_get_cpu(env));
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cs->exception_index = excp;
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if (excp == EXCP_YIELD) {
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env->yield_needed = 0;
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}
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if (excp == EXCP_DEBUG) {
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env->exception_taken = 0;
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}
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cpu_loop_exit(cs);
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}
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void HELPER(exception_cause)(CPUXtensaState *env, 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)(env, vector);
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}
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void HELPER(exception_cause_vaddr)(CPUXtensaState *env,
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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)(env, pc, cause);
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}
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void debug_exception_env(CPUXtensaState *env, uint32_t cause)
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{
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if (xtensa_get_cintlevel(env) < env->config->debug_level) {
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HELPER(debug_exception)(env, env->pc, cause);
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}
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}
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void HELPER(debug_exception)(CPUXtensaState *env, uint32_t pc, uint32_t cause)
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{
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unsigned level = env->config->debug_level;
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env->pc = pc;
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env->sregs[DEBUGCAUSE] = cause;
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env->sregs[EPC1 + level - 1] = pc;
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env->sregs[EPS2 + level - 2] = env->sregs[PS];
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env->sregs[PS] = (env->sregs[PS] & ~PS_INTLEVEL) | PS_EXCM |
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(level << PS_INTLEVEL_SHIFT);
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HELPER(exception)(env, EXC_DEBUG);
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}
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#ifndef CONFIG_USER_ONLY
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void HELPER(waiti)(CPUXtensaState *env, uint32_t pc, uint32_t intlevel)
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{
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CPUState *cpu;
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env->pc = pc;
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env->sregs[PS] = (env->sregs[PS] & ~PS_INTLEVEL) |
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(intlevel << PS_INTLEVEL_SHIFT);
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qemu_mutex_lock_iothread();
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check_interrupts(env);
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qemu_mutex_unlock_iothread();
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if (env->pending_irq_level) {
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cpu_loop_exit(CPU(xtensa_env_get_cpu(env)));
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return;
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}
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cpu = CPU(xtensa_env_get_cpu(env));
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cpu->halted = 1;
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HELPER(exception)(env, EXCP_HLT);
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}
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void HELPER(check_interrupts)(CPUXtensaState *env)
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{
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qemu_mutex_lock_iothread();
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check_interrupts(env);
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qemu_mutex_unlock_iothread();
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}
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static uint32_t relocated_vector(CPUXtensaState *env, uint32_t vector)
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{
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if (xtensa_option_enabled(env->config,
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XTENSA_OPTION_RELOCATABLE_VECTOR)) {
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return vector - env->config->vecbase + env->sregs[VECBASE];
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} else {
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return vector;
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}
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}
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/*!
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* Handle penging IRQ.
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* For the high priority interrupt jump to the corresponding interrupt vector.
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* For the level-1 interrupt convert it to either user, kernel or double
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* exception with the 'level-1 interrupt' exception cause.
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*/
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static void handle_interrupt(CPUXtensaState *env)
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{
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int level = env->pending_irq_level;
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if (level > xtensa_get_cintlevel(env) &&
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level <= env->config->nlevel &&
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(env->config->level_mask[level] &
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env->sregs[INTSET] &
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env->sregs[INTENABLE])) {
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CPUState *cs = CPU(xtensa_env_get_cpu(env));
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if (level > 1) {
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env->sregs[EPC1 + level - 1] = env->pc;
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env->sregs[EPS2 + level - 2] = env->sregs[PS];
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env->sregs[PS] =
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(env->sregs[PS] & ~PS_INTLEVEL) | level | PS_EXCM;
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env->pc = relocated_vector(env,
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env->config->interrupt_vector[level]);
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} else {
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env->sregs[EXCCAUSE] = LEVEL1_INTERRUPT_CAUSE;
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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] = env->pc;
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} else {
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env->sregs[EPC1] = env->pc;
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}
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cs->exception_index = EXC_DOUBLE;
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} else {
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env->sregs[EPC1] = env->pc;
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cs->exception_index =
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(env->sregs[PS] & PS_UM) ? EXC_USER : EXC_KERNEL;
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}
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env->sregs[PS] |= PS_EXCM;
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}
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env->exception_taken = 1;
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}
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}
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/* Called from cpu_handle_interrupt with BQL held */
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void xtensa_cpu_do_interrupt(CPUState *cs)
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{
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XtensaCPU *cpu = XTENSA_CPU(cs);
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CPUXtensaState *env = &cpu->env;
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if (cs->exception_index == EXC_IRQ) {
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qemu_log_mask(CPU_LOG_INT,
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"%s(EXC_IRQ) level = %d, cintlevel = %d, "
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"pc = %08x, a0 = %08x, ps = %08x, "
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"intset = %08x, intenable = %08x, "
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"ccount = %08x\n",
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__func__, env->pending_irq_level,
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xtensa_get_cintlevel(env),
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env->pc, env->regs[0], env->sregs[PS],
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env->sregs[INTSET], env->sregs[INTENABLE],
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env->sregs[CCOUNT]);
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handle_interrupt(env);
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}
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switch (cs->exception_index) {
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case EXC_WINDOW_OVERFLOW4:
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case EXC_WINDOW_UNDERFLOW4:
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case EXC_WINDOW_OVERFLOW8:
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case EXC_WINDOW_UNDERFLOW8:
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case EXC_WINDOW_OVERFLOW12:
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case EXC_WINDOW_UNDERFLOW12:
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case EXC_KERNEL:
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case EXC_USER:
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case EXC_DOUBLE:
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case EXC_DEBUG:
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qemu_log_mask(CPU_LOG_INT, "%s(%d) "
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"pc = %08x, a0 = %08x, ps = %08x, ccount = %08x\n",
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__func__, cs->exception_index,
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env->pc, env->regs[0], env->sregs[PS],
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env->sregs[CCOUNT]);
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if (env->config->exception_vector[cs->exception_index]) {
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uint32_t vector;
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vector = env->config->exception_vector[cs->exception_index];
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env->pc = relocated_vector(env, vector);
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env->exception_taken = 1;
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} else {
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qemu_log_mask(CPU_LOG_INT,
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"%s(pc = %08x) bad exception_index: %d\n",
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__func__, env->pc, cs->exception_index);
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}
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break;
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case EXC_IRQ:
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break;
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default:
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qemu_log("%s(pc = %08x) unknown exception_index: %d\n",
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__func__, env->pc, cs->exception_index);
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break;
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}
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check_interrupts(env);
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}
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#else
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void xtensa_cpu_do_interrupt(CPUState *cs)
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{
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}
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#endif
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bool xtensa_cpu_exec_interrupt(CPUState *cs, int interrupt_request)
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{
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if (interrupt_request & CPU_INTERRUPT_HARD) {
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cs->exception_index = EXC_IRQ;
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xtensa_cpu_do_interrupt(cs);
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return true;
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}
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return false;
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}
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@ -169,133 +169,6 @@ void xtensa_cpu_list(FILE *f, fprintf_function cpu_fprintf)
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}
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}
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#ifndef CONFIG_USER_ONLY
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static uint32_t relocated_vector(CPUXtensaState *env, uint32_t vector)
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{
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if (xtensa_option_enabled(env->config,
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XTENSA_OPTION_RELOCATABLE_VECTOR)) {
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return vector - env->config->vecbase + env->sregs[VECBASE];
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} else {
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return vector;
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}
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}
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/*!
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* Handle penging IRQ.
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* For the high priority interrupt jump to the corresponding interrupt vector.
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* For the level-1 interrupt convert it to either user, kernel or double
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* exception with the 'level-1 interrupt' exception cause.
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*/
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static void handle_interrupt(CPUXtensaState *env)
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{
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int level = env->pending_irq_level;
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if (level > xtensa_get_cintlevel(env) &&
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level <= env->config->nlevel &&
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(env->config->level_mask[level] &
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env->sregs[INTSET] &
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env->sregs[INTENABLE])) {
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CPUState *cs = CPU(xtensa_env_get_cpu(env));
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if (level > 1) {
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env->sregs[EPC1 + level - 1] = env->pc;
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env->sregs[EPS2 + level - 2] = env->sregs[PS];
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env->sregs[PS] =
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(env->sregs[PS] & ~PS_INTLEVEL) | level | PS_EXCM;
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env->pc = relocated_vector(env,
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env->config->interrupt_vector[level]);
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} else {
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env->sregs[EXCCAUSE] = LEVEL1_INTERRUPT_CAUSE;
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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] = env->pc;
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} else {
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env->sregs[EPC1] = env->pc;
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}
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cs->exception_index = EXC_DOUBLE;
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} else {
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env->sregs[EPC1] = env->pc;
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cs->exception_index =
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(env->sregs[PS] & PS_UM) ? EXC_USER : EXC_KERNEL;
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}
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env->sregs[PS] |= PS_EXCM;
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}
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env->exception_taken = 1;
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}
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}
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/* Called from cpu_handle_interrupt with BQL held */
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void xtensa_cpu_do_interrupt(CPUState *cs)
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{
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XtensaCPU *cpu = XTENSA_CPU(cs);
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CPUXtensaState *env = &cpu->env;
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if (cs->exception_index == EXC_IRQ) {
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qemu_log_mask(CPU_LOG_INT,
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"%s(EXC_IRQ) level = %d, cintlevel = %d, "
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"pc = %08x, a0 = %08x, ps = %08x, "
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"intset = %08x, intenable = %08x, "
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"ccount = %08x\n",
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__func__, env->pending_irq_level, xtensa_get_cintlevel(env),
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env->pc, env->regs[0], env->sregs[PS],
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env->sregs[INTSET], env->sregs[INTENABLE],
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env->sregs[CCOUNT]);
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handle_interrupt(env);
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}
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switch (cs->exception_index) {
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case EXC_WINDOW_OVERFLOW4:
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case EXC_WINDOW_UNDERFLOW4:
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case EXC_WINDOW_OVERFLOW8:
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case EXC_WINDOW_UNDERFLOW8:
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case EXC_WINDOW_OVERFLOW12:
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case EXC_WINDOW_UNDERFLOW12:
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case EXC_KERNEL:
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case EXC_USER:
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case EXC_DOUBLE:
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case EXC_DEBUG:
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qemu_log_mask(CPU_LOG_INT, "%s(%d) "
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"pc = %08x, a0 = %08x, ps = %08x, ccount = %08x\n",
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__func__, cs->exception_index,
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env->pc, env->regs[0], env->sregs[PS], env->sregs[CCOUNT]);
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if (env->config->exception_vector[cs->exception_index]) {
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env->pc = relocated_vector(env,
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env->config->exception_vector[cs->exception_index]);
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env->exception_taken = 1;
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} else {
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qemu_log_mask(CPU_LOG_INT, "%s(pc = %08x) bad exception_index: %d\n",
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__func__, env->pc, cs->exception_index);
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}
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break;
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case EXC_IRQ:
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break;
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default:
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qemu_log("%s(pc = %08x) unknown exception_index: %d\n",
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__func__, env->pc, cs->exception_index);
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break;
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}
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check_interrupts(env);
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}
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#else
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void xtensa_cpu_do_interrupt(CPUState *cs)
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{
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}
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#endif
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bool xtensa_cpu_exec_interrupt(CPUState *cs, int interrupt_request)
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{
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if (interrupt_request & CPU_INTERRUPT_HARD) {
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cs->exception_index = EXC_IRQ;
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xtensa_cpu_do_interrupt(cs);
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return true;
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}
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return false;
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}
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#ifdef CONFIG_USER_ONLY
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int xtensa_cpu_handle_mmu_fault(CPUState *cs, vaddr address, int size, int rw,
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@ -95,70 +95,6 @@ void xtensa_cpu_do_transaction_failed(CPUState *cs, hwaddr physaddr, vaddr addr,
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#endif
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void HELPER(exception)(CPUXtensaState *env, uint32_t excp)
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{
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CPUState *cs = CPU(xtensa_env_get_cpu(env));
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cs->exception_index = excp;
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if (excp == EXCP_YIELD) {
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env->yield_needed = 0;
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}
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if (excp == EXCP_DEBUG) {
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env->exception_taken = 0;
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}
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cpu_loop_exit(cs);
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}
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void HELPER(exception_cause)(CPUXtensaState *env, 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)(env, vector);
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}
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void HELPER(exception_cause_vaddr)(CPUXtensaState *env,
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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)(env, pc, cause);
|
||||
}
|
||||
|
||||
void debug_exception_env(CPUXtensaState *env, uint32_t cause)
|
||||
{
|
||||
if (xtensa_get_cintlevel(env) < env->config->debug_level) {
|
||||
HELPER(debug_exception)(env, env->pc, cause);
|
||||
}
|
||||
}
|
||||
|
||||
void HELPER(debug_exception)(CPUXtensaState *env, uint32_t pc, uint32_t cause)
|
||||
{
|
||||
unsigned level = env->config->debug_level;
|
||||
|
||||
env->pc = pc;
|
||||
env->sregs[DEBUGCAUSE] = cause;
|
||||
env->sregs[EPC1 + level - 1] = pc;
|
||||
env->sregs[EPS2 + level - 2] = env->sregs[PS];
|
||||
env->sregs[PS] = (env->sregs[PS] & ~PS_INTLEVEL) | PS_EXCM |
|
||||
(level << PS_INTLEVEL_SHIFT);
|
||||
HELPER(exception)(env, EXC_DEBUG);
|
||||
}
|
||||
|
||||
void HELPER(dump_state)(CPUXtensaState *env)
|
||||
{
|
||||
XtensaCPU *cpu = xtensa_env_get_cpu(env);
|
||||
@ -168,28 +104,6 @@ void HELPER(dump_state)(CPUXtensaState *env)
|
||||
|
||||
#ifndef CONFIG_USER_ONLY
|
||||
|
||||
void HELPER(waiti)(CPUXtensaState *env, uint32_t pc, uint32_t intlevel)
|
||||
{
|
||||
CPUState *cpu;
|
||||
|
||||
env->pc = pc;
|
||||
env->sregs[PS] = (env->sregs[PS] & ~PS_INTLEVEL) |
|
||||
(intlevel << PS_INTLEVEL_SHIFT);
|
||||
|
||||
qemu_mutex_lock_iothread();
|
||||
check_interrupts(env);
|
||||
qemu_mutex_unlock_iothread();
|
||||
|
||||
if (env->pending_irq_level) {
|
||||
cpu_loop_exit(CPU(xtensa_env_get_cpu(env)));
|
||||
return;
|
||||
}
|
||||
|
||||
cpu = CPU(xtensa_env_get_cpu(env));
|
||||
cpu->halted = 1;
|
||||
HELPER(exception)(env, EXCP_HLT);
|
||||
}
|
||||
|
||||
void HELPER(update_ccount)(CPUXtensaState *env)
|
||||
{
|
||||
uint64_t now = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL);
|
||||
@ -222,13 +136,6 @@ void HELPER(update_ccompare)(CPUXtensaState *env, uint32_t i)
|
||||
env->yield_needed = 1;
|
||||
}
|
||||
|
||||
void HELPER(check_interrupts)(CPUXtensaState *env)
|
||||
{
|
||||
qemu_mutex_lock_iothread();
|
||||
check_interrupts(env);
|
||||
qemu_mutex_unlock_iothread();
|
||||
}
|
||||
|
||||
/*!
|
||||
* Check vaddr accessibility/cache attributes and raise an exception if
|
||||
* specified by the ATOMCTL SR.
|
||||
|
Loading…
Reference in New Issue
Block a user