Archipelago » qemu

/*

 *  CRIS helper routines

 *

 *  Copyright (c) 2007 AXIS Communications

 *  Written by Edgar E. Iglesias

 *

 * This library is free software; you can redistribute it and/or

 * modify it under the terms of the GNU Lesser General Public

 * License as published by the Free Software Foundation; either

 * version 2 of the License, or (at your option) any later version.

 *

 * This library is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

 * Lesser General Public License for more details.

 *

 * You should have received a copy of the GNU Lesser General Public

 * License along with this library; if not, write to the Free Software

 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

 */

#include <assert.h>

#include "exec.h"

#define MMUSUFFIX _mmu

#ifdef __s390__

# define GETPC() ((void*)((unsigned long)__builtin_return_address(0) & 0x7fffffffUL))

#else

# define GETPC() (__builtin_return_address(0))

#endif

#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"

/* 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 (target_ulong addr, int is_write, int mmu_idx, void *retaddr)

{

    TranslationBlock *tb;

    CPUState *saved_env;

    target_phys_addr_t pc;

    int ret;

    /* XXX: hack to restore env in all cases, even if not called from

       generated code */

    saved_env = env;

    env = cpu_single_env;

    ret = cpu_cris_handle_mmu_fault(env, addr, is_write, mmu_idx, 1);

    if (__builtin_expect(ret, 0)) {

        if (retaddr) {

            /* now we have a real cpu fault */

            pc = (target_phys_addr_t)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, NULL);

            }

        }

        cpu_loop_exit();

    }

    env = saved_env;

}

void do_unassigned_access(target_phys_addr_t addr, int is_write, int is_exec,

                          int is_asi)

{

}