mirror of https://gitee.com/openkylin/qemu.git
107 lines
2.2 KiB
C
107 lines
2.2 KiB
C
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#include <assert.h>
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#include "exec.h"
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#include "helper.h"
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#include "host-utils.h"
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#include "hw/lm32_pic.h"
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#include "hw/lm32_juart.h"
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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 "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 helper_raise_exception(uint32_t index)
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{
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env->exception_index = index;
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cpu_loop_exit();
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}
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void helper_hlt(void)
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{
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env->halted = 1;
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env->exception_index = EXCP_HLT;
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cpu_loop_exit();
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}
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void helper_wcsr_im(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(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(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(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(void)
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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(void)
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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(void)
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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(void)
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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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/* XXX: fix it to restore all registers */
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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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TranslationBlock *tb;
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CPUState *saved_env;
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unsigned long pc;
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int ret;
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/* XXX: hack to restore env in all cases, even if not called from
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generated code */
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saved_env = env;
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env = cpu_single_env;
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ret = cpu_lm32_handle_mmu_fault(env, addr, is_write, mmu_idx, 1);
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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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pc = (unsigned long)retaddr;
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tb = tb_find_pc(pc);
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if (tb) {
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/* the PC is inside the translated code. It means that we have
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a virtual CPU fault */
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cpu_restore_state(tb, env, pc, NULL);
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}
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}
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cpu_loop_exit();
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}
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env = saved_env;
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}
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#endif
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