LXR qemu/target-lm32/op

   1#include "qemu/osdep.h"
   2#include "cpu.h"
   3#include "exec/helper-proto.h"
   4#include "qemu/host-utils.h"
   5
   6#include "hw/lm32/lm32_pic.h"
   7#include "hw/char/lm32_juart.h"
   8
   9#include "exec/cpu_ldst.h"
  10
  11#ifndef CONFIG_USER_ONLY
  12#include "sysemu/sysemu.h"
  13#endif
  14
  15#if !defined(CONFIG_USER_ONLY)
  16void raise_exception(CPULM32State *env, int index)
  17{
  18    CPUState *cs = CPU(lm32_env_get_cpu(env));
  19
  20    cs->exception_index = index;
  21    cpu_loop_exit(cs);
  22}
  23
  24void HELPER(raise_exception)(CPULM32State *env, uint32_t index)
  25{
  26    raise_exception(env, index);
  27}
  28
  29void HELPER(hlt)(CPULM32State *env)
  30{
  31    CPUState *cs = CPU(lm32_env_get_cpu(env));
  32
  33    cs->halted = 1;
  34    cs->exception_index = EXCP_HLT;
  35    cpu_loop_exit(cs);
  36}
  37
  38void HELPER(ill)(CPULM32State *env)
  39{
  40#ifndef CONFIG_USER_ONLY
  41    CPUState *cs = CPU(lm32_env_get_cpu(env));
  42    fprintf(stderr, "VM paused due to illegal instruction. "
  43            "Connect a debugger or switch to the monitor console "
  44            "to find out more.\n");
  45    vm_stop(RUN_STATE_PAUSED);
  46    cs->halted = 1;
  47    raise_exception(env, EXCP_HALTED);
  48#endif
  49}
  50
  51void HELPER(wcsr_bp)(CPULM32State *env, uint32_t bp, uint32_t idx)
  52{
  53    uint32_t addr = bp & ~1;
  54
  55    assert(idx < 4);
  56
  57    env->bp[idx] = bp;
  58    lm32_breakpoint_remove(env, idx);
  59    if (bp & 1) {
  60        lm32_breakpoint_insert(env, idx, addr);
  61    }
  62}
  63
  64void HELPER(wcsr_wp)(CPULM32State *env, uint32_t wp, uint32_t idx)
  65{
  66    lm32_wp_t wp_type;
  67
  68    assert(idx < 4);
  69
  70    env->wp[idx] = wp;
  71
  72    wp_type = lm32_wp_type(env->dc, idx);
  73    lm32_watchpoint_remove(env, idx);
  74    if (wp_type != LM32_WP_DISABLED) {
  75        lm32_watchpoint_insert(env, idx, wp, wp_type);
  76    }
  77}
  78
  79void HELPER(wcsr_dc)(CPULM32State *env, uint32_t dc)
  80{
  81    uint32_t old_dc;
  82    int i;
  83    lm32_wp_t old_type;
  84    lm32_wp_t new_type;
  85
  86    old_dc = env->dc;
  87    env->dc = dc;
  88
  89    for (i = 0; i < 4; i++) {
  90        old_type = lm32_wp_type(old_dc, i);
  91        new_type = lm32_wp_type(dc, i);
  92
  93        if (old_type != new_type) {
  94            lm32_watchpoint_remove(env, i);
  95            if (new_type != LM32_WP_DISABLED) {
  96                lm32_watchpoint_insert(env, i, env->wp[i], new_type);
  97            }
  98        }
  99    }
 100}
 101
 102void HELPER(wcsr_im)(CPULM32State *env, uint32_t im)
 103{
 104    lm32_pic_set_im(env->pic_state, im);
 105}
 106
 107void HELPER(wcsr_ip)(CPULM32State *env, uint32_t im)
 108{
 109    lm32_pic_set_ip(env->pic_state, im);
 110}
 111
 112void HELPER(wcsr_jtx)(CPULM32State *env, uint32_t jtx)
 113{
 114    lm32_juart_set_jtx(env->juart_state, jtx);
 115}
 116
 117void HELPER(wcsr_jrx)(CPULM32State *env, uint32_t jrx)
 118{
 119    lm32_juart_set_jrx(env->juart_state, jrx);
 120}
 121
 122uint32_t HELPER(rcsr_im)(CPULM32State *env)
 123{
 124    return lm32_pic_get_im(env->pic_state);
 125}
 126
 127uint32_t HELPER(rcsr_ip)(CPULM32State *env)
 128{
 129    return lm32_pic_get_ip(env->pic_state);
 130}
 131
 132uint32_t HELPER(rcsr_jtx)(CPULM32State *env)
 133{
 134    return lm32_juart_get_jtx(env->juart_state);
 135}
 136
 137uint32_t HELPER(rcsr_jrx)(CPULM32State *env)
 138{
 139    return lm32_juart_get_jrx(env->juart_state);
 140}
 141
 142/* Try to fill the TLB and return an exception if error. If retaddr is
 143 * NULL, it means that the function was called in C code (i.e. not
 144 * from generated code or from helper.c)
 145 */
 146void tlb_fill(CPUState *cs, target_ulong addr, int is_write, int mmu_idx,
 147              uintptr_t retaddr)
 148{
 149    int ret;
 150
 151    ret = lm32_cpu_handle_mmu_fault(cs, addr, is_write, mmu_idx);
 152    if (unlikely(ret)) {
 153        if (retaddr) {
 154            /* now we have a real cpu fault */
 155            cpu_restore_state(cs, retaddr);
 156        }
 157        cpu_loop_exit(cs);
 158    }
 159}
 160#endif
 161
 162