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/*

 * This file is subject to the terms and conditions of the GNU General Public

 * License.  See the file "COPYING" in the main directory of this archive

 * for more details.

 *

 * Copyright (C) 1994 - 1999 by Ralf Baechle

 * Copyright (C) 1999 Silicon Graphics

 *

 * Low level exception handling

 */

#include <asm/asm.h>

#include <asm/regdef.h>

#include <asm/fpregdef.h>

#include <asm/mipsregs.h>

#include <asm/stackframe.h>

        .macro  __build_clear_none

        .endm

        .macro  __build_clear_sti

        STI

        .endm

        .macro  __build_clear_cli

        CLI

        .endm

        .macro  __build_clear_fpe

        cfc1    a1, fcr31

        li      a2, ~(0x3f << 12)

        and     a2, a1

        ctc1    a2, fcr31

        STI

        .endm

        .macro  __build_clear_ade

        dmfc0   t0, CP0_BADVADDR

        sd      t0, PT_BVADDR(sp)

        KMODE

        .endm

        .macro  __BUILD_silent exception

        .endm

        /* Gas tries to parse the PRINT argument as a string containing

           string escapes and emits bogus warnings if it believes to

           recognize an unknown escape code.  So make the arguments

           start with an n and gas will believe \n is ok ...  */

        .macro  __BUILD_verbose nexception

        ld      a1, PT_EPC(sp)

        PRINT("Got \nexception at %016lx\012")

        .endm

        .macro  __BUILD_count exception

        .set    reorder

        ld      t0,exception_count_\exception

        daddiu  t0, 1

        sd      t0,exception_count_\exception

        .set    noreorder

        .comm   exception_count\exception, 8, 8

        .endm

        .macro  BUILD_HANDLER exception handler clear verbose

        .align  5

        NESTED(handle_\exception, PT_SIZE, sp)

        .set    noat

        SAVE_ALL

        __BUILD_clear_\clear

        .set    at

        __BUILD_\verbose \exception

        move    a0, sp

        jal     do_\handler

        j       ret_from_exception

         nop

        END(handle_\exception)

        .endm