Archipelago » qemu

#include <assert.h>

#include "exec.h"

#include "helper.h"

#include "host-utils.h"

#include "hw/lm32_pic.h"

#include "hw/lm32_juart.h"

#if !defined(CONFIG_USER_ONLY)

#define MMUSUFFIX _mmu

#define SHIFT 0

#include "softmmu_template.h"

#define SHIFT 1

#include "softmmu_template.h"

#define SHIFT 2

#include "softmmu_template.h"

#define SHIFT 3

#include "softmmu_template.h"

void helper_raise_exception(uint32_t index)

{

    env->exception_index = index;

    cpu_loop_exit();

}

void helper_hlt(void)

{

    env->halted = 1;

    env->exception_index = EXCP_HLT;

    cpu_loop_exit();

}

void helper_wcsr_im(uint32_t im)

{

    lm32_pic_set_im(env->pic_state, im);

}

void helper_wcsr_ip(uint32_t im)

{

    lm32_pic_set_ip(env->pic_state, im);

}

void helper_wcsr_jtx(uint32_t jtx)

{

    lm32_juart_set_jtx(env->juart_state, jtx);

}

void helper_wcsr_jrx(uint32_t jrx)

{

    lm32_juart_set_jrx(env->juart_state, jrx);

}

uint32_t helper_rcsr_im(void)

{

    return lm32_pic_get_im(env->pic_state);

}

uint32_t helper_rcsr_ip(void)

{

    return lm32_pic_get_ip(env->pic_state);

}

uint32_t helper_rcsr_jtx(void)

{

    return lm32_juart_get_jtx(env->juart_state);

}

uint32_t helper_rcsr_jrx(void)

{

    return lm32_juart_get_jrx(env->juart_state);

}

/* Try to fill the TLB and return an exception if error. If retaddr is

   NULL, it means that the function was called in C code (i.e. not

   from generated code or from helper.c) */

/* XXX: fix it to restore all registers */

void tlb_fill(target_ulong addr, int is_write, int mmu_idx, void *retaddr)

{

    TranslationBlock *tb;

    CPUState *saved_env;

    unsigned long pc;

    int ret;

    /* XXX: hack to restore env in all cases, even if not called from

       generated code */

    saved_env = env;

    env = cpu_single_env;

    ret = cpu_lm32_handle_mmu_fault(env, addr, is_write, mmu_idx, 1);

    if (unlikely(ret)) {

        if (retaddr) {

            /* now we have a real cpu fault */

            pc = (unsigned long)retaddr;

            tb = tb_find_pc(pc);

            if (tb) {

                /* the PC is inside the translated code. It means that we have

                   a virtual CPU fault */

                cpu_restore_state(tb, env, pc);

            }

        }

        cpu_loop_exit();

    }

    env = saved_env;

}

#endif