asm.S

   1 /*
   2  * Copyright (c) 2009 Loren Merritt
   3  *
   4  * This file is part of FFmpeg.
   5  *
   6  * FFmpeg is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * FFmpeg is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with FFmpeg; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  19  */
  20
  21 #include "config.h"
  22
  23 #define GLUE(a, b) a ## b
  24 #define JOIN(a, b) GLUE(a, b)
  25 #define X(s) JOIN(EXTERN_ASM, s)
  26
  27 #if ARCH_PPC64
  28
  29 #define PTR  .quad
  30 #define lp   ld
  31 #define lpx  ldx
  32 #define stp  std
  33 #define stpu stdu
  34 #define PS   8
  35 #define L(s) JOIN(., s)
  36
  37 .macro extfunc name
  38     .global X(\name)
  39 #if _CALL_ELF == 2
  40     .text
  41 X(\name):
  42     addis %r2, %r12, .TOC.-X(\name)@ha
  43     addi %r2, %r2, .TOC.-X(\name)@l
  44     .localentry X(\name), .-X(\name)
  45 #else
  46     .section .opd, "aw"
  47 X(\name):
  48     .quad L(\name), .TOC.@tocbase, 0
  49     .previous
  50     .type X(\name), STT_FUNC
  51 L(\name):
  52 #endif
  53 .endm
  54
  55 .macro movrel rd, sym, gp
  56     ld      \rd, \sym@got(r2)
  57 .endm
  58
  59 .macro get_got rd
  60 .endm
  61
  62 #else /* ARCH_PPC64 */
  63
  64 #define PTR  .int
  65 #define lp   lwz
  66 #define lpx  lwzx
  67 #define stp  stw
  68 #define stpu stwu
  69 #define PS   4
  70 #define L(s) s
  71
  72 .macro extfunc name
  73     .global X(\name)
  74     .type   X(\name), STT_FUNC
  75 X(\name):
  76 \name:
  77 .endm
  78
  79 .macro movrel rd, sym, gp
  80 #if CONFIG_PIC
  81     lwz     \rd, \sym@got(\gp)
  82 #else
  83     lis     \rd, \sym@ha
  84     la      \rd, \sym@l(\rd)
  85 #endif
  86 .endm
  87
  88 .macro get_got rd
  89 #if CONFIG_PIC
  90     bcl     20, 31, .Lgot\@
  91 .Lgot\@:
  92     mflr    \rd
  93     addis   \rd, \rd, _GLOBAL_OFFSET_TABLE_ - .Lgot\@@ha
  94     addi    \rd, \rd, _GLOBAL_OFFSET_TABLE_ - .Lgot\@@l
  95 #endif
  96 .endm
  97
  98 #endif /* ARCH_PPC64 */
  99
 100 #if HAVE_IBM_ASM
 101
 102 .macro DEFINE_REG n
 103     .equiv r\n, \n
 104     .equiv f\n, \n
 105     .equiv v\n, \n
 106 .endm
 107
 108 DEFINE_REG 0
 109 DEFINE_REG 1
 110 DEFINE_REG 2
 111 DEFINE_REG 3
 112 DEFINE_REG 4
 113 DEFINE_REG 5
 114 DEFINE_REG 6
 115 DEFINE_REG 7
 116 DEFINE_REG 8
 117 DEFINE_REG 9
 118 DEFINE_REG 10
 119 DEFINE_REG 11
 120 DEFINE_REG 12
 121 DEFINE_REG 13
 122 DEFINE_REG 14
 123 DEFINE_REG 15
 124 DEFINE_REG 16
 125 DEFINE_REG 17
 126 DEFINE_REG 18
 127 DEFINE_REG 19
 128 DEFINE_REG 20
 129 DEFINE_REG 21
 130 DEFINE_REG 22
 131 DEFINE_REG 23
 132 DEFINE_REG 24
 133 DEFINE_REG 25
 134 DEFINE_REG 26
 135 DEFINE_REG 27
 136 DEFINE_REG 28
 137 DEFINE_REG 29
 138 DEFINE_REG 30
 139 DEFINE_REG 31
 140
 141 #endif /* HAVE_IBM_ASM */