172 lines
3.8 KiB
C
172 lines
3.8 KiB
C
#include <assert.h>
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#include "cpu.h"
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#include "helper.h"
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#include "qemu/host-utils.h"
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#include "hw/lm32/lm32_pic.h"
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#include "hw/char/lm32_juart.h"
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#include "exec/softmmu_exec.h"
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#ifndef CONFIG_USER_ONLY
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#include "sysemu/sysemu.h"
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#endif
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#if !defined(CONFIG_USER_ONLY)
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#define MMUSUFFIX _mmu
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#define SHIFT 0
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#include "exec/softmmu_template.h"
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#define SHIFT 1
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#include "exec/softmmu_template.h"
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#define SHIFT 2
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#include "exec/softmmu_template.h"
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#define SHIFT 3
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#include "exec/softmmu_template.h"
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void raise_exception(CPULM32State *env, int index)
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{
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CPUState *cs = CPU(lm32_env_get_cpu(env));
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cs->exception_index = index;
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cpu_loop_exit(env);
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}
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void HELPER(raise_exception)(CPULM32State *env, uint32_t index)
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{
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raise_exception(env, index);
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}
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void HELPER(hlt)(CPULM32State *env)
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{
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CPUState *cs = CPU(lm32_env_get_cpu(env));
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cs->halted = 1;
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cs->exception_index = EXCP_HLT;
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cpu_loop_exit(env);
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}
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void HELPER(ill)(CPULM32State *env)
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{
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#ifndef CONFIG_USER_ONLY
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CPUState *cs = CPU(lm32_env_get_cpu(env));
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fprintf(stderr, "VM paused due to illegal instruction. "
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"Connect a debugger or switch to the monitor console "
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"to find out more.\n");
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qemu_system_vmstop_request(RUN_STATE_PAUSED);
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cs->halted = 1;
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raise_exception(env, EXCP_HALTED);
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#endif
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}
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void HELPER(wcsr_bp)(CPULM32State *env, uint32_t bp, uint32_t idx)
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{
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uint32_t addr = bp & ~1;
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assert(idx < 4);
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env->bp[idx] = bp;
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lm32_breakpoint_remove(env, idx);
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if (bp & 1) {
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lm32_breakpoint_insert(env, idx, addr);
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}
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}
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void HELPER(wcsr_wp)(CPULM32State *env, uint32_t wp, uint32_t idx)
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{
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lm32_wp_t wp_type;
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assert(idx < 4);
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env->wp[idx] = wp;
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wp_type = lm32_wp_type(env->dc, idx);
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lm32_watchpoint_remove(env, idx);
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if (wp_type != LM32_WP_DISABLED) {
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lm32_watchpoint_insert(env, idx, wp, wp_type);
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}
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}
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void HELPER(wcsr_dc)(CPULM32State *env, uint32_t dc)
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{
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uint32_t old_dc;
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int i;
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lm32_wp_t old_type;
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lm32_wp_t new_type;
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old_dc = env->dc;
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env->dc = dc;
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for (i = 0; i < 4; i++) {
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old_type = lm32_wp_type(old_dc, i);
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new_type = lm32_wp_type(dc, i);
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if (old_type != new_type) {
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lm32_watchpoint_remove(env, i);
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if (new_type != LM32_WP_DISABLED) {
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lm32_watchpoint_insert(env, i, env->wp[i], new_type);
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}
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}
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}
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}
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void HELPER(wcsr_im)(CPULM32State *env, uint32_t im)
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{
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lm32_pic_set_im(env->pic_state, im);
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}
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void HELPER(wcsr_ip)(CPULM32State *env, uint32_t im)
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{
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lm32_pic_set_ip(env->pic_state, im);
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}
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void HELPER(wcsr_jtx)(CPULM32State *env, uint32_t jtx)
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{
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lm32_juart_set_jtx(env->juart_state, jtx);
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}
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void HELPER(wcsr_jrx)(CPULM32State *env, uint32_t jrx)
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{
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lm32_juart_set_jrx(env->juart_state, jrx);
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}
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uint32_t HELPER(rcsr_im)(CPULM32State *env)
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{
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return lm32_pic_get_im(env->pic_state);
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}
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uint32_t HELPER(rcsr_ip)(CPULM32State *env)
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{
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return lm32_pic_get_ip(env->pic_state);
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}
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uint32_t HELPER(rcsr_jtx)(CPULM32State *env)
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{
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return lm32_juart_get_jtx(env->juart_state);
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}
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uint32_t HELPER(rcsr_jrx)(CPULM32State *env)
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{
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return lm32_juart_get_jrx(env->juart_state);
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}
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/* Try to fill the TLB and return an exception if error. If retaddr is
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NULL, it means that the function was called in C code (i.e. not
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from generated code or from helper.c) */
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void tlb_fill(CPULM32State *env, target_ulong addr, int is_write, int mmu_idx,
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uintptr_t retaddr)
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{
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LM32CPU *cpu = lm32_env_get_cpu(env);
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int ret;
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ret = lm32_cpu_handle_mmu_fault(CPU(cpu), addr, is_write, mmu_idx);
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if (unlikely(ret)) {
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if (retaddr) {
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/* now we have a real cpu fault */
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cpu_restore_state(env, retaddr);
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}
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cpu_loop_exit(env);
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}
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}
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#endif
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