target-sparc/op_helper.c

   1 #include "cpu.h"
   2 #include "dyngen-exec.h"
   3 #include "helper.h"
   4
   5 #if !defined(CONFIG_USER_ONLY)
   6 static void do_unaligned_access(target_ulong addr, int is_write, int is_user,
   7                                 void *retaddr);
   8
   9 #define MMUSUFFIX _mmu
  10 #define ALIGNED_ONLY
  11
  12 #define SHIFT 0
  13 #include "softmmu_template.h"
  14
  15 #define SHIFT 1
  16 #include "softmmu_template.h"
  17
  18 #define SHIFT 2
  19 #include "softmmu_template.h"
  20
  21 #define SHIFT 3
  22 #include "softmmu_template.h"
  23
  24 /* XXX: make it generic ? */
  25 static void cpu_restore_state2(void *retaddr)
  26 {
  27     TranslationBlock *tb;
  28     unsigned long pc;
  29
  30     if (retaddr) {
  31         /* now we have a real cpu fault */
  32         pc = (unsigned long)retaddr;
  33         tb = tb_find_pc(pc);
  34         if (tb) {
  35             /* the PC is inside the translated code. It means that we have
  36                a virtual CPU fault */
  37             cpu_restore_state(tb, env, pc);
  38         }
  39     }
  40 }
  41
  42 static void do_unaligned_access(target_ulong addr, int is_write, int is_user,
  43                                 void *retaddr)
  44 {
  45 #ifdef DEBUG_UNALIGNED
  46     printf("Unaligned access to 0x" TARGET_FMT_lx " from 0x" TARGET_FMT_lx
  47            "\n", addr, env->pc);
  48 #endif
  49     cpu_restore_state2(retaddr);
  50     helper_raise_exception(env, TT_UNALIGNED);
  51 }
  52
  53 /* try to fill the TLB and return an exception if error. If retaddr is
  54    NULL, it means that the function was called in C code (i.e. not
  55    from generated code or from helper.c) */
  56 /* XXX: fix it to restore all registers */
  57 void tlb_fill(CPUSPARCState *env1, target_ulong addr, int is_write, int mmu_idx,
  58               void *retaddr)
  59 {
  60     int ret;
  61     CPUSPARCState *saved_env;
  62
  63     saved_env = env;
  64     env = env1;
  65
  66     ret = cpu_sparc_handle_mmu_fault(env, addr, is_write, mmu_idx);
  67     if (ret) {
  68         cpu_restore_state2(retaddr);
  69         cpu_loop_exit(env);
  70     }
  71     env = saved_env;
  72 }
  73
  74 #endif /* !CONFIG_USER_ONLY */