gcc/ginclude/ppc-asm.h

   1 /* PowerPC asm definitions for GNU C.  */
   2 /* Under winnt, 1) gas suppports 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 #endif
  39
  40 /*
  41  * Macros to glue together two tokens.
  42  */
  43
  44 #ifdef __STDC__
  45 #define XGLUE(a,b) a##b
  46 #else
  47 #define XGLUE(a,b) a/**/b
  48 #endif
  49
  50 #define GLUE(a,b) XGLUE(a,b)
  51
  52 /*
  53  * Macros to begin and end a function written in assembler.  If -mcall-aixdesc
  54  * or -mcall-nt, create a function descriptor with the given name, and create
  55  * the real function with one or two leading periods respectively.
  56  */
  57
  58 #ifdef _RELOCATABLE
  59 #define DESC_SECTION ".got2"
  60 #else
  61 #define DESC_SECTION ".got1"
  62 #endif
  63
  64 #if defined(_CALL_AIXDESC)
  65 #define FUNC_NAME(name) GLUE(.,name)
  66 #define FUNC_START(name) \
  67         .section DESC_SECTION,"aw"; \
  68 name: \
  69         .long GLUE(.,name); \
  70         .long _GLOBAL_OFFSET_TABLE_; \
  71         .long 0; \
  72         .previous; \
  73         .type GLUE(.,name),@function; \
  74         .globl name; \
  75         .globl GLUE(.,name); \
  76 GLUE(.,name):
  77
  78 #define FUNC_END(name) \
  79 GLUE(.L,name): \
  80         .size GLUE(.,name),GLUE(.L,name)-GLUE(.,name)
  81
  82 #elif defined(__WINNT__)
  83 #define FUNC_NAME(name) GLUE(..,name)
  84 #define FUNC_START(name) \
  85         .pdata; \
  86         .align 2; \
  87         .ualong GLUE(..,name),GLUE(name,.e),0,0,GLUE(..,name); \
  88         .reldata; \
  89 name: \
  90         .ualong GLUE(..,name),.toc; \
  91         .section .text; \
  92         .globl name; \
  93         .globl GLUE(..,name); \
  94 GLUE(..,name):
  95
  96 #define FUNC_END(name) \
  97 GLUE(name,.e): ; \
  98 GLUE(FE_MOT_RESVD..,name):
  99
 100 #elif defined(_CALL_NT)
 101 #define FUNC_NAME(name) GLUE(..,name)
 102 #define FUNC_START(name) \
 103         .section DESC_SECTION,"aw"; \
 104 name: \
 105         .long GLUE(..,name); \
 106         .long _GLOBAL_OFFSET_TABLE_; \
 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 #else
 118 #define FUNC_NAME(name) name
 119 #define FUNC_START(name) \
 120         .type name,@function; \
 121         .globl name; \
 122 name:
 123
 124 #define FUNC_END(name) \
 125 GLUE(.L,name): \
 126         .size name,GLUE(.L,name)-name
 127 #endif
 128