Subversion Repositories openrisc_2011-10-31

# MIPS simulator testsuite FPU utility functions.

# Copyright (C) 2004, 2007, 2008 Free Software Foundation, Inc.

# Contributed by Chris Demetriou of Broadcom Corporation.

#

# This file is part of the GNU simulators.

#

# This program is free software; you can redistribute it and/or modify

# it under the terms of the GNU General Public License as published by

# the Free Software Foundation; either version 3 of the License, or

# (at your option) any later version.

#

# This program 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 General Public License for more details.

#

# You should have received a copy of the GNU General Public License

# along with this program.  If not, see .  */

        .macro  enable_fpu fr

        mfc0    $20, $12

        or      $20, $20, (1 << 29) | (\fr << 26)

        mtc0    $20, $20

        .endm

        ###

        ### Data movement macros

        ###

        .macro ld_fp_df r, v

        .data

1:      .double \v

        .previous

        ldc1    \r, 1b

        .endm

        .macro ld_fp_di r, v

        .data

1:      .dword  \v

        .previous

        ldc1    \r, 1b

        .endm

        .macro ld_fp_sf r, v

        .data

1:      .float  \v

        .previous

        lwc1    \r, 1b

        .endm

        .macro ld_fp_si r, v

        .data

1:      .word   \v

        .previous

        lwc1    \r, 1b

        .endm

        ###

        ### FP condition code manipulation macros

        ###

        .macro clrset_fp_cc clr, set

        cfc1    $20, $31

        or      $20, $20, (((\clr & 0xfe) << 24) | ((\clr & 0x01) << 23))

        xor     $20, $20, (((\clr & 0xfe) << 24) | ((\clr & 0x01) << 23))

        or      $20, $20, (((\set & 0xfe) << 24) | ((\set & 0x01) << 23))

        ctc1    $20, $31

        .endm

        .macro clr_fp_cc clr

        clrset_fp_cc \clr, 0

        .endm

        .macro set_fp_cc set

        clrset_fp_cc 0, \set

        .endm

        .macro get_fp_cc r

        .set push

        .set noat

        cfc1    $1, $31

        srl     $1, $1, 23

        andi    \r, $1, 0x1fc

        andi    $1, $1, 0x1

        srl     \r, \r, 1

        or      \r, \r, $1

        .set pop

        .endm

        .macro ck_fp_cc v

        get_fp_cc $20

        xori    $20, $20, \v

        bnez    $20, _fail

         nop

        .endm

        .macro ckm_fp_cc v, mask

        get_fp_cc $20

        xori    $20, $20, \v

        andi    $20, $20, \mask

        bnez    $20, _fail

         nop

        .endm