gcc/config/rs6000/ppc-asm.h

   1 /* PowerPC asm definitions for GNU C.  */
   2 /* Under winnt, 1) gas supports the following as names and 2) in particular
   3    defining "toc" breaks the FUNC_START macro as ".toc" becomes ".2" */
   4
   5 #if !defined(__WINNT__)
   6 #define r0      0
   7 #define sp      1
   8 #define toc     2
   9 #define r3      3
  10 #define r4      4
  11 #define r5      5
  12 #define r6      6
  13 #define r7      7
  14 #define r8      8
  15 #define r9      9
  16 #define r10     10
  17 #define r11     11
  18 #define r12     12
  19 #define r13     13
  20 #define r14     14
  21 #define r15     15
  22 #define r16     16
  23 #define r17     17
  24 #define r18     18
  25 #define r19     19
  26 #define r20     20
  27 #define r21     21
  28 #define r22     22
  29 #define r23     23
  30 #define r24     24
  31 #define r25     25
  32 #define r26     26
  33 #define r27     27
  34 #define r28     28
  35 #define r29     29
  36 #define r30     30
  37 #define r31     31
  38
  39 #define cr0     0
  40 #define cr1     1
  41 #define cr2     2
  42 #define cr3     3
  43 #define cr4     4
  44 #define cr5     5
  45 #define cr6     6
  46 #define cr7     7
  47
  48 #define f0      0
  49 #define f1      1
  50 #define f2      2
  51 #define f3      3
  52 #define f4      4
  53 #define f5      5
  54 #define f6      6
  55 #define f7      7
  56 #define f8      8
  57 #define f9      9
  58 #define f10     10
  59 #define f11     11
  60 #define f12     12
  61 #define f13     13
  62 #define f14     14
  63 #define f15     15
  64 #define f16     16
  65 #define f17     17
  66 #define f18     18
  67 #define f19     19
  68 #define f20     20
  69 #define f21     21
  70 #define f22     22
  71 #define f23     23
  72 #define f24     24
  73 #define f25     25
  74 #define f26     26
  75 #define f27     27
  76 #define f28     28
  77 #define f29     29
  78 #define f30     30
  79 #define f31     31
  80 #endif
  81
  82 /*
  83  * Macros to glue together two tokens.
  84  */
  85
  86 #ifdef __STDC__
  87 #define XGLUE(a,b) a##b
  88 #else
  89 #define XGLUE(a,b) a/**/b
  90 #endif
  91
  92 #define GLUE(a,b) XGLUE(a,b)
  93
  94 /*
  95  * Macros to begin and end a function written in assembler.  If -mcall-aixdesc
  96  * or -mcall-nt, create a function descriptor with the given name, and create
  97  * the real function with one or two leading periods respectively.
  98  */
  99
 100 #ifdef _RELOCATABLE
 101 #define DESC_SECTION ".got2"
 102 #else
 103 #define DESC_SECTION ".got1"
 104 #endif
 105
 106 #if defined(_CALL_AIXDESC)
 107 #define FUNC_NAME(name) GLUE(.,name)
 108 #define JUMP_TARGET(name) FUNC_NAME(name)
 109 #define FUNC_START(name) \
 110         .section DESC_SECTION,"aw"; \
 111 name: \
 112         .long GLUE(.,name); \
 113         .long _GLOBAL_OFFSET_TABLE_; \
 114         .long 0; \
 115         .previous; \
 116         .type GLUE(.,name),@function; \
 117         .globl name; \
 118         .globl GLUE(.,name); \
 119 GLUE(.,name):
 120
 121 #define FUNC_END(name) \
 122 GLUE(.L,name): \
 123         .size GLUE(.,name),GLUE(.L,name)-GLUE(.,name)
 124
 125 #elif defined(__WINNT__)
 126 #define FUNC_NAME(name) GLUE(..,name)
 127 #define JUMP_TARGET(name) FUNC_NAME(name)
 128 #define FUNC_START(name) \
 129         .pdata; \
 130         .align 2; \
 131         .ualong GLUE(..,name),GLUE(name,.e),0,0,GLUE(..,name); \
 132         .reldata; \
 133 name: \
 134         .ualong GLUE(..,name),.toc; \
 135         .section .text; \
 136         .globl name; \
 137         .globl GLUE(..,name); \
 138 GLUE(..,name):
 139
 140 #define FUNC_END(name) \
 141 GLUE(name,.e): ; \
 142 GLUE(FE_MOT_RESVD..,name):
 143
 144 #elif defined(_CALL_NT)
 145 #define FUNC_NAME(name) GLUE(..,name)
 146 #define JUMP_TARGET(name) FUNC_NAME(name)
 147 #define FUNC_START(name) \
 148         .section DESC_SECTION,"aw"; \
 149 name: \
 150         .long GLUE(..,name); \
 151         .long _GLOBAL_OFFSET_TABLE_; \
 152         .previous; \
 153         .type GLUE(..,name),@function; \
 154         .globl name; \
 155         .globl GLUE(..,name); \
 156 GLUE(..,name):
 157
 158 #define FUNC_END(name) \
 159 GLUE(.L,name): \
 160         .size GLUE(..,name),GLUE(.L,name)-GLUE(..,name)
 161
 162 #elif defined (__powerpc64__)
 163 #define FUNC_NAME(name) GLUE(.,name)
 164 #define FUNC_START(name) \
 165         .section ".opd","aw"; \
 166 name: \
 167         .quad GLUE(.,name); \
 168         .quad .TOC.@tocbase; \
 169         .quad 0; \
 170         .previous; \
 171         .type GLUE(.,name),@function; \
 172         .globl name; \
 173         .globl GLUE(.,name); \
 174 GLUE(.,name):
 175
 176 #define FUNC_END(name) \
 177 GLUE(.L,name): \
 178         .size GLUE(.,name),GLUE(.L,name)-GLUE(.,name)
 179
 180 #else
 181 #define FUNC_NAME(name) GLUE(__USER_LABEL_PREFIX__,name)
 182 #if defined __PIC__ || defined __pic__
 183 #define JUMP_TARGET(name) FUNC_NAME(name@plt)
 184 #else
 185 #define JUMP_TARGET(name) FUNC_NAME(name)
 186 #endif
 187 #define FUNC_START(name) \
 188         .type FUNC_NAME(name),@function; \
 189         .globl FUNC_NAME(name); \
 190 FUNC_NAME(name):
 191
 192 #define FUNC_END(name) \
 193 GLUE(.L,name): \
 194         .size FUNC_NAME(name),GLUE(.L,name)-FUNC_NAME(name)
 195 #endif
 196