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