qemu/target-sparc/op_helper.c

#include "cpu.h"
#include "dyngen-exec.h"
#include "helper.h"

#if !defined(CONFIG_USER_ONLY)
static void do_unaligned_access(target_ulong addr, int is_write, int is_user,
                                void *retaddr);

#define MMUSUFFIX _mmu
#define ALIGNED_ONLY

#define SHIFT 0
#include "softmmu_template.h"

#define SHIFT 1
#include "softmmu_template.h"

#define SHIFT 2
#include "softmmu_template.h"

#define SHIFT 3
#include "softmmu_template.h"

/* XXX: make it generic ? */
static void cpu_restore_state2(void *retaddr)
{
    TranslationBlock *tb;
    unsigned long pc;

    if (retaddr) {
        /* now we have a real cpu fault */
        pc = (unsigned long)retaddr;
        tb = tb_find_pc(pc);
        if (tb) {
            /* the PC is inside the translated code. It means that we have
               a virtual CPU fault */
            cpu_restore_state(tb, env, pc);
        }
    }
}

static void do_unaligned_access(target_ulong addr, int is_write, int is_user,
                                void *retaddr)
{
#ifdef DEBUG_UNALIGNED
    printf("Unaligned access to 0x" TARGET_FMT_lx " from 0x" TARGET_FMT_lx
           "\n", addr, env->pc);
#endif
    cpu_restore_state2(retaddr);
    helper_raise_exception(env, TT_UNALIGNED);
}

/* try to fill the TLB and return an exception if error. If retaddr is
   NULL, it means that the function was called in C code (i.e. not
   from generated code or from helper.c) */
/* XXX: fix it to restore all registers */
void tlb_fill(CPUState *env1, target_ulong addr, int is_write, int mmu_idx,
              void *retaddr)
{
    int ret;
    CPUState *saved_env;

    saved_env = env;
    env = env1;

    ret = cpu_sparc_handle_mmu_fault(env, addr, is_write, mmu_idx);
    if (ret) {
        cpu_restore_state2(retaddr);
        cpu_loop_exit(env);
    }
    env = saved_env;
}

#endif /* !CONFIG_USER_ONLY */