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/lm32_pic.h"
   7 #include "hw/char/lm32_juart.h"
   8
   9 #include "exec/softmmu_exec.h"
  10
  11 #if !defined(CONFIG_USER_ONLY)
  12 #define MMUSUFFIX _mmu
  13 #define SHIFT 0
  14 #include "exec/softmmu_template.h"
  15 #define SHIFT 1
  16 #include "exec/softmmu_template.h"
  17 #define SHIFT 2
  18 #include "exec/softmmu_template.h"
  19 #define SHIFT 3
  20 #include "exec/softmmu_template.h"
  21
  22 void HELPER(raise_exception)(CPULM32State *env, uint32_t index)
  23 {
  24     env->exception_index = index;
  25     cpu_loop_exit(env);
  26 }
  27
  28 void HELPER(hlt)(CPULM32State *env)
  29 {
  30     CPUState *cs = CPU(lm32_env_get_cpu(env));
  31
  32     cs->halted = 1;
  33     env->exception_index = EXCP_HLT;
  34     cpu_loop_exit(env);
  35 }
  36
  37 void HELPER(wcsr_im)(CPULM32State *env, uint32_t im)
  38 {
  39     lm32_pic_set_im(env->pic_state, im);
  40 }
  41
  42 void HELPER(wcsr_ip)(CPULM32State *env, uint32_t im)
  43 {
  44     lm32_pic_set_ip(env->pic_state, im);
  45 }
  46
  47 void HELPER(wcsr_jtx)(CPULM32State *env, uint32_t jtx)
  48 {
  49     lm32_juart_set_jtx(env->juart_state, jtx);
  50 }
  51
  52 void HELPER(wcsr_jrx)(CPULM32State *env, uint32_t jrx)
  53 {
  54     lm32_juart_set_jrx(env->juart_state, jrx);
  55 }
  56
  57 uint32_t HELPER(rcsr_im)(CPULM32State *env)
  58 {
  59     return lm32_pic_get_im(env->pic_state);
  60 }
  61
  62 uint32_t HELPER(rcsr_ip)(CPULM32State *env)
  63 {
  64     return lm32_pic_get_ip(env->pic_state);
  65 }
  66
  67 uint32_t HELPER(rcsr_jtx)(CPULM32State *env)
  68 {
  69     return lm32_juart_get_jtx(env->juart_state);
  70 }
  71
  72 uint32_t HELPER(rcsr_jrx)(CPULM32State *env)
  73 {
  74     return lm32_juart_get_jrx(env->juart_state);
  75 }
  76
  77 /* Try to fill the TLB and return an exception if error. If retaddr is
  78    NULL, it means that the function was called in C code (i.e. not
  79    from generated code or from helper.c) */
  80 void tlb_fill(CPULM32State *env, target_ulong addr, int is_write, int mmu_idx,
  81               uintptr_t retaddr)
  82 {
  83     int ret;
  84
  85     ret = cpu_lm32_handle_mmu_fault(env, addr, is_write, mmu_idx);
  86     if (unlikely(ret)) {
  87         if (retaddr) {
  88             /* now we have a real cpu fault */
  89             cpu_restore_state(env, retaddr);
  90         }
  91         cpu_loop_exit(env);
  92     }
  93 }
  94 #endif
  95