target-lm32/op_helper.c

   1 #include <assert.h>
   2 #include "cpu.h"
   3 #include "helper.h"
   4 #include "qemu/host-utils.h"
   5
   6 #include "hw/lm32_pic.h"
   7 #include "hw/lm32_juart.h"
   8
   9 #if !defined(CONFIG_USER_ONLY)
  10 #define MMUSUFFIX _mmu
  11 #define SHIFT 0
  12 #include "exec/softmmu_template.h"
  13 #define SHIFT 1
  14 #include "exec/softmmu_template.h"
  15 #define SHIFT 2
  16 #include "exec/softmmu_template.h"
  17 #define SHIFT 3
  18 #include "exec/softmmu_template.h"
  19
  20 void helper_raise_exception(CPULM32State *env, uint32_t index)
  21 {
  22     env->exception_index = index;
  23     cpu_loop_exit(env);
  24 }
  25
  26 void helper_hlt(CPULM32State *env)
  27 {
  28     CPUState *cs = CPU(lm32_env_get_cpu(env));
  29
  30     cs->halted = 1;
  31     env->exception_index = EXCP_HLT;
  32     cpu_loop_exit(env);
  33 }
  34
  35 void helper_wcsr_im(CPULM32State *env, uint32_t im)
  36 {
  37     lm32_pic_set_im(env->pic_state, im);
  38 }
  39
  40 void helper_wcsr_ip(CPULM32State *env, uint32_t im)
  41 {
  42     lm32_pic_set_ip(env->pic_state, im);
  43 }
  44
  45 void helper_wcsr_jtx(CPULM32State *env, uint32_t jtx)
  46 {
  47     lm32_juart_set_jtx(env->juart_state, jtx);
  48 }
  49
  50 void helper_wcsr_jrx(CPULM32State *env, uint32_t jrx)
  51 {
  52     lm32_juart_set_jrx(env->juart_state, jrx);
  53 }
  54
  55 uint32_t helper_rcsr_im(CPULM32State *env)
  56 {
  57     return lm32_pic_get_im(env->pic_state);
  58 }
  59
  60 uint32_t helper_rcsr_ip(CPULM32State *env)
  61 {
  62     return lm32_pic_get_ip(env->pic_state);
  63 }
  64
  65 uint32_t helper_rcsr_jtx(CPULM32State *env)
  66 {
  67     return lm32_juart_get_jtx(env->juart_state);
  68 }
  69
  70 uint32_t helper_rcsr_jrx(CPULM32State *env)
  71 {
  72     return lm32_juart_get_jrx(env->juart_state);
  73 }
  74
  75 /* Try to fill the TLB and return an exception if error. If retaddr is
  76    NULL, it means that the function was called in C code (i.e. not
  77    from generated code or from helper.c) */
  78 void tlb_fill(CPULM32State *env, target_ulong addr, int is_write, int mmu_idx,
  79               uintptr_t retaddr)
  80 {
  81     int ret;
  82
  83     ret = cpu_lm32_handle_mmu_fault(env, addr, is_write, mmu_idx);
  84     if (unlikely(ret)) {
  85         if (retaddr) {
  86             /* now we have a real cpu fault */
  87             cpu_restore_state(env, retaddr);
  88         }
  89         cpu_loop_exit(env);
  90     }
  91 }
  92 #endif
  93