target/lm32/op_helper.c

   1 #include "qemu/osdep.h"
   2 #include "cpu.h"
   3 #include "exec/helper-proto.h"
   4 #include "qemu/host-utils.h"
   5 #include "qemu/main-loop.h"
   6 #include "sysemu/runstate.h"
   7
   8 #include "hw/lm32/lm32_pic.h"
   9 #include "hw/char/lm32_juart.h"
  10
  11 #include "exec/exec-all.h"
  12 #include "exec/cpu_ldst.h"
  13
  14 #ifndef CONFIG_USER_ONLY
  15 #endif
  16
  17 #if !defined(CONFIG_USER_ONLY)
  18 void raise_exception(CPULM32State *env, int index)
  19 {
  20     CPUState *cs = env_cpu(env);
  21
  22     cs->exception_index = index;
  23     cpu_loop_exit(cs);
  24 }
  25
  26 void HELPER(raise_exception)(CPULM32State *env, uint32_t index)
  27 {
  28     raise_exception(env, index);
  29 }
  30
  31 void HELPER(hlt)(CPULM32State *env)
  32 {
  33     CPUState *cs = env_cpu(env);
  34
  35     cs->halted = 1;
  36     cs->exception_index = EXCP_HLT;
  37     cpu_loop_exit(cs);
  38 }
  39
  40 void HELPER(ill)(CPULM32State *env)
  41 {
  42 #ifndef CONFIG_USER_ONLY
  43     CPUState *cs = env_cpu(env);
  44     fprintf(stderr, "VM paused due to illegal instruction. "
  45             "Connect a debugger or switch to the monitor console "
  46             "to find out more.\n");
  47     vm_stop(RUN_STATE_PAUSED);
  48     cs->halted = 1;
  49     raise_exception(env, EXCP_HALTED);
  50 #endif
  51 }
  52
  53 void HELPER(wcsr_bp)(CPULM32State *env, uint32_t bp, uint32_t idx)
  54 {
  55     uint32_t addr = bp & ~1;
  56
  57     assert(idx < 4);
  58
  59     env->bp[idx] = bp;
  60     lm32_breakpoint_remove(env, idx);
  61     if (bp & 1) {
  62         lm32_breakpoint_insert(env, idx, addr);
  63     }
  64 }
  65
  66 void HELPER(wcsr_wp)(CPULM32State *env, uint32_t wp, uint32_t idx)
  67 {
  68     lm32_wp_t wp_type;
  69
  70     assert(idx < 4);
  71
  72     env->wp[idx] = wp;
  73
  74     wp_type = lm32_wp_type(env->dc, idx);
  75     lm32_watchpoint_remove(env, idx);
  76     if (wp_type != LM32_WP_DISABLED) {
  77         lm32_watchpoint_insert(env, idx, wp, wp_type);
  78     }
  79 }
  80
  81 void HELPER(wcsr_dc)(CPULM32State *env, uint32_t dc)
  82 {
  83     uint32_t old_dc;
  84     int i;
  85     lm32_wp_t old_type;
  86     lm32_wp_t new_type;
  87
  88     old_dc = env->dc;
  89     env->dc = dc;
  90
  91     for (i = 0; i < 4; i++) {
  92         old_type = lm32_wp_type(old_dc, i);
  93         new_type = lm32_wp_type(dc, i);
  94
  95         if (old_type != new_type) {
  96             lm32_watchpoint_remove(env, i);
  97             if (new_type != LM32_WP_DISABLED) {
  98                 lm32_watchpoint_insert(env, i, env->wp[i], new_type);
  99             }
 100         }
 101     }
 102 }
 103
 104 void HELPER(wcsr_im)(CPULM32State *env, uint32_t im)
 105 {
 106     qemu_mutex_lock_iothread();
 107     lm32_pic_set_im(env->pic_state, im);
 108     qemu_mutex_unlock_iothread();
 109 }
 110
 111 void HELPER(wcsr_ip)(CPULM32State *env, uint32_t im)
 112 {
 113     qemu_mutex_lock_iothread();
 114     lm32_pic_set_ip(env->pic_state, im);
 115     qemu_mutex_unlock_iothread();
 116 }
 117
 118 void HELPER(wcsr_jtx)(CPULM32State *env, uint32_t jtx)
 119 {
 120     lm32_juart_set_jtx(env->juart_state, jtx);
 121 }
 122
 123 void HELPER(wcsr_jrx)(CPULM32State *env, uint32_t jrx)
 124 {
 125     lm32_juart_set_jrx(env->juart_state, jrx);
 126 }
 127
 128 uint32_t HELPER(rcsr_im)(CPULM32State *env)
 129 {
 130     return lm32_pic_get_im(env->pic_state);
 131 }
 132
 133 uint32_t HELPER(rcsr_ip)(CPULM32State *env)
 134 {
 135     return lm32_pic_get_ip(env->pic_state);
 136 }
 137
 138 uint32_t HELPER(rcsr_jtx)(CPULM32State *env)
 139 {
 140     return lm32_juart_get_jtx(env->juart_state);
 141 }
 142
 143 uint32_t HELPER(rcsr_jrx)(CPULM32State *env)
 144 {
 145     return lm32_juart_get_jrx(env->juart_state);
 146 }
 147 #endif
 148