127 lines
3.1 KiB
NASM
127 lines
3.1 KiB
NASM
/* libgcc1 routines for the FR30.
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Copyright (C) 1998, 1999 Free Software Foundation, Inc.
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This file is part of GNU CC.
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GNU CC is free software; you can redistribute it and/or modify it
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under the terms of the GNU General Public License as published by the
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Free Software Foundation; either version 2, or (at your option) any
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later version.
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In addition to the permissions in the GNU General Public License, the
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Free Software Foundation gives you unlimited permission to link the
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compiled version of this file with other programs, and to distribute
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those programs without any restriction coming from the use of this
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file. (The General Public License restrictions do apply in other
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respects; for example, they cover modification of the file, and
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distribution when not linked into another program.)
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This file is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; see the file COPYING. If not, write to
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the Free Software Foundation, 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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/* As a special exception, if you link this library with files
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compiled with GCC to produce an executable, this does not cause
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the resulting executable to be covered by the GNU General Public License.
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This exception does not however invalidate any other reasons why
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the executable file might be covered by the GNU General Public License. */
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.macro FUNC_START name
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.text
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.globl __\name
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.type __\name, @function
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__\name:
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.endm
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.macro FUNC_END name
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.size __\name, . - __\name
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.endm
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.macro DIV_BODY reg number
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.if \number
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DIV_BODY \reg, "\number - 1"
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div1 \reg
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.endif
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.endm
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#ifdef L_udivsi3
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FUNC_START udivsi3
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;; Perform an unsiged division of r4 / r5 and place the result in r4.
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;; Does not handle overflow yet...
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mov r4, mdl
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div0u r5
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DIV_BODY r5 32
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mov mdl, r4
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ret
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FUNC_END udivsi3
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#endif /* L_udivsi3 */
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#ifdef L_divsi3
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FUNC_START divsi3
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;; Perform a siged division of r4 / r5 and place the result in r4.
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;; Does not handle overflow yet...
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mov r4, mdl
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div0s r5
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DIV_BODY r5 32
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div2 r5
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div3
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div4s
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mov mdl, r4
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ret
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FUNC_END divsi3
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#endif /* L_divsi3 */
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#ifdef L_umodsi3
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FUNC_START umodsi3
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;; Perform an unsiged division of r4 / r5 and places the remainder in r4.
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;; Does not handle overflow yet...
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mov r4, mdl
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div0u r5
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DIV_BODY r5 32
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mov mdh, r4
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ret
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FUNC_END umodsi3
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#endif /* L_umodsi3 */
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#ifdef L_modsi3
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FUNC_START modsi3
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;; Perform a siged division of r4 / r5 and place the remainder in r4.
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;; Does not handle overflow yet...
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mov r4, mdl
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div0s r5
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DIV_BODY r5 32
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div2 r5
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div3
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div4s
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mov mdh, r4
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ret
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FUNC_END modsi3
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#endif /* L_modsi3 */
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#ifdef L_negsi2
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FUNC_START negsi2
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ldi:8 #0, r0
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sub r4, r0
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mov r0, r4
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ret
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FUNC_END negsi2
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#endif /* L_negsi2 */
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#ifdef L_one_cmplsi2
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FUNC_START one_cmplsi2
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ldi:8 #0xff, r0
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extsb r0
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eor r0, r4
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ret
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FUNC_END one_cmplsi2
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#endif /* L_one_cmplsi2 */
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