libgcc/config/fr30/lib1funcs.S

   1 /* libgcc routines for the FR30.
   2    Copyright (C) 1998-2022 Free Software Foundation, Inc.
   3
   4 This file is part of GCC.
   5
   6 GCC is free software; you can redistribute it and/or modify it
   7 under the terms of the GNU General Public License as published by the
   8 Free Software Foundation; either version 3, or (at your option) any
   9 later version.
  10
  11 This file is distributed in the hope that it will be useful, but
  12 WITHOUT ANY WARRANTY; without even the implied warranty of
  13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14 General Public License for more details.
  15
  16 Under Section 7 of GPL version 3, you are granted additional
  17 permissions described in the GCC Runtime Library Exception, version
  18 3.1, as published by the Free Software Foundation.
  19
  20 You should have received a copy of the GNU General Public License and
  21 a copy of the GCC Runtime Library Exception along with this program;
  22 see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
  23 <http://www.gnu.org/licenses/>.  */
  24
  25         .macro FUNC_START name
  26         .text
  27         .globl __\name
  28         .type  __\name, @function
  29 __\name:
  30         .endm
  31
  32         .macro FUNC_END name
  33         .size  __\name, . - __\name
  34         .endm
  35
  36         .macro DIV_BODY reg number
  37         .if \number
  38         DIV_BODY  \reg, "\number - 1"
  39         div1    \reg
  40         .endif
  41         .endm
  42
  43 #ifdef L_udivsi3
  44 FUNC_START udivsi3
  45         ;; Perform an unsiged division of r4 / r5 and place the result in r4.
  46         ;; Does not handle overflow yet...
  47         mov     r4, mdl
  48         div0u   r5
  49         DIV_BODY r5 32
  50         mov     mdl, r4
  51         ret
  52 FUNC_END udivsi3
  53 #endif /* L_udivsi3 */
  54
  55 #ifdef L_divsi3
  56 FUNC_START divsi3
  57         ;; Perform a siged division of r4 / r5 and place the result in r4.
  58         ;; Does not handle overflow yet...
  59         mov     r4, mdl
  60         div0s   r5
  61         DIV_BODY r5 32
  62         div2    r5
  63         div3
  64         div4s
  65         mov     mdl, r4
  66         ret
  67 FUNC_END divsi3
  68 #endif /* L_divsi3 */
  69
  70 #ifdef L_umodsi3
  71 FUNC_START umodsi3
  72         ;; Perform an unsiged division of r4 / r5 and places the remainder in r4.
  73         ;; Does not handle overflow yet...
  74         mov     r4, mdl
  75         div0u   r5
  76         DIV_BODY r5 32
  77         mov     mdh, r4
  78         ret
  79 FUNC_END umodsi3
  80 #endif /* L_umodsi3 */
  81
  82 #ifdef L_modsi3
  83 FUNC_START modsi3
  84         ;; Perform a siged division of r4 / r5 and place the remainder in r4.
  85         ;; Does not handle overflow yet...
  86         mov     r4, mdl
  87         div0s   r5
  88         DIV_BODY r5 32
  89         div2    r5
  90         div3
  91         div4s
  92         mov     mdh, r4
  93         ret
  94 FUNC_END modsi3
  95 #endif /* L_modsi3 */
  96
  97 #ifdef L_negsi2
  98 FUNC_START negsi2
  99         ldi:8   #0, r0
 100         sub     r4, r0
 101         mov     r0, r4
 102         ret
 103 FUNC_END negsi2
 104 #endif /* L_negsi2 */
 105
 106 #ifdef L_one_cmplsi2
 107 FUNC_START one_cmplsi2
 108         ldi:8   #0xff, r0
 109         extsb   r0
 110         eor     r0, r4
 111         ret
 112 FUNC_END one_cmplsi2
 113 #endif /* L_one_cmplsi2 */
 114
 115