1 | /* Definitions of target machine for GNU compiler. |
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2 | Hitachi H8/300 version generating coff |
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3 | Copyright (C) 1992, 1993, 1994, 1995 Free Software Foundation, Inc. |
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4 | Contributed by Steve Chamberlain (sac@cygnus.com), |
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5 | Jim Wilson (wilson@cygnus.com), and Doug Evans (dje@cygnus.com). |
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6 | |
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7 | This file is part of GNU CC. |
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8 | |
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9 | GNU CC is free software; you can redistribute it and/or modify |
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10 | it under the terms of the GNU General Public License as published by |
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11 | the Free Software Foundation; either version 2, or (at your option) |
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12 | any later version. |
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13 | |
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14 | GNU CC is distributed in the hope that it will be useful, |
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15 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
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16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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17 | GNU General Public License for more details. |
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18 | |
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19 | You should have received a copy of the GNU General Public License |
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20 | along with GNU CC; see the file COPYING. If not, write to |
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21 | the Free Software Foundation, 59 Temple Place - Suite 330, |
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22 | Boston, MA 02111-1307, USA. */ |
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23 | |
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24 | /* Which cpu to compile for. |
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25 | We use int for CPU_TYPE to avoid lots of casts. */ |
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26 | #if 0 /* defined in insn-attr.h, here for documentation */ |
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27 | enum attr_cpu { CPU_H8300, CPU_H8300H }; |
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28 | #endif |
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29 | extern int cpu_type; |
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30 | |
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31 | /* Various globals defined in h8300.c. */ |
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32 | |
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33 | extern char *h8_push_op,*h8_pop_op,*h8_mov_op; |
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34 | extern char **h8_reg_names; |
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35 | |
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36 | /* Names to predefine in the preprocessor for this target machine. */ |
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37 | |
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38 | #define CPP_PREDEFINES \ |
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39 | "-D__LONG_MAX__=2147483647L -D__LONG_LONG_MAX__=2147483647L -D_DOUBLE_IS_32BITS" |
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40 | |
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41 | #define CPP_SPEC \ |
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42 | "%{!mh:-D__H8300__} %{mh:-D__H8300H__} \ |
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43 | %{!mh:-D__SIZE_TYPE__=unsigned\\ int -D__PTRDIFF_TYPE__=int} \ |
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44 | %{mh:-D__SIZE_TYPE__=unsigned\\ long -D__PTRDIFF_TYPE__=long} \ |
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45 | %{!mh:-Acpu(h8300) -Amachine(h8300)} %{mh:-Acpu(h8300h) -Amachine(h8300h)} \ |
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46 | %{!mint32:-D__INT_MAX__=32767} %{mint32:-D__INT_MAX__=2147483647}" |
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47 | |
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48 | #define LINK_SPEC "%{mh:-m h8300h}" |
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49 | |
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50 | #define LIB_SPEC "%{mrelax:-relax} %{g:-lg} %{!p:%{!pg:-lc}}%{p:-lc_p}%{pg:-lc_p}" |
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51 | |
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52 | /* Print subsidiary information on the compiler version in use. */ |
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53 | |
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54 | #define TARGET_VERSION fprintf (stderr, " (Hitachi H8/300)"); |
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55 | |
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56 | /* Run-time compilation parameters selecting different hardware subsets. */ |
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57 | |
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58 | extern int target_flags; |
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59 | |
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60 | /* Macros used in the machine description to test the flags. */ |
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61 | |
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62 | /* Make int's 32 bits. */ |
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63 | #define TARGET_INT32 (target_flags & 8) |
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64 | |
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65 | /* Dump recorded insn lengths into the output file. This helps debug the |
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66 | md file. */ |
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67 | #define TARGET_ADDRESSES (target_flags & 64) |
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68 | |
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69 | /* Pass the first few arguments in registers. */ |
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70 | #define TARGET_QUICKCALL (target_flags & 128) |
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71 | |
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72 | /* Pretend byte accesses are slow. */ |
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73 | #define TARGET_SLOWBYTE (target_flags & 256) |
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74 | |
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75 | /* Dump each assembler insn's rtl into the output file. |
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76 | This is for debugging the compiler only. */ |
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77 | #define TARGET_RTL_DUMP (target_flags & 2048) |
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78 | |
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79 | /* Select between the h8/300 and h8/300h cpus. */ |
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80 | #define TARGET_H8300 (! TARGET_H8300H) |
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81 | #define TARGET_H8300H (target_flags & 4096) |
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82 | |
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83 | /* Macro to define tables used to set the flags. |
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84 | This is a list in braces of pairs in braces, |
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85 | each pair being { "NAME", VALUE } |
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86 | where VALUE is the bits to set or minus the bits to clear. |
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87 | An empty string NAME is used to identify the default VALUE. */ |
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88 | |
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89 | #define TARGET_SWITCHES \ |
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90 | { {"int32",8}, \ |
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91 | {"addresses",64 }, \ |
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92 | {"quickcall",128}, \ |
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93 | {"no-quickcall",-128}, \ |
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94 | {"slowbyte",256}, \ |
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95 | {"relax",1024}, \ |
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96 | {"rtl-dump",2048}, \ |
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97 | {"h",4096}, \ |
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98 | {"no-h",-4096}, \ |
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99 | {"exp",8192}, \ |
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100 | { "", TARGET_DEFAULT}} |
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101 | |
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102 | /* Merge the meaning of -mdouble64 and -fshort-double. |
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103 | ??? Unfortunately, there's no way to detect -fno-short-double |
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104 | (our default is the opposite of theirs). |
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105 | Also do other things that must be done once at start up. */ |
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106 | |
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107 | #define OVERRIDE_OPTIONS \ |
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108 | { \ |
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109 | /*extern int flag_short_double; \ |
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110 | flag_short_double = TARGET_DOUBLE32;*/ \ |
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111 | h8300_init_once (); \ |
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112 | } |
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113 | |
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114 | /* Default target_flags if no switches specified. */ |
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115 | |
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116 | #ifndef TARGET_DEFAULT |
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117 | #define TARGET_DEFAULT (128) /* quickcall */ |
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118 | #endif |
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119 | |
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120 | /* Show we can debug even without a frame pointer. */ |
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121 | /* #define CAN_DEBUG_WITHOUT_FP */ |
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122 | |
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123 | /* Define this if addresses of constant functions |
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124 | shouldn't be put through pseudo regs where they can be cse'd. |
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125 | Desirable on machines where ordinary constants are expensive |
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126 | but a CALL with constant address is cheap. */ |
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127 | #define NO_FUNCTION_CSE |
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128 | |
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129 | /* Target machine storage layout */ |
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130 | |
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131 | /* Define to use software floating point emulator for REAL_ARITHMETIC and |
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132 | decimal <-> binary conversion. */ |
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133 | #define REAL_ARITHMETIC |
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134 | |
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135 | /* Define this if most significant bit is lowest numbered |
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136 | in instructions that operate on numbered bit-fields. |
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137 | This is not true on the H8/300. */ |
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138 | #define BITS_BIG_ENDIAN 0 |
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139 | |
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140 | /* Define this if most significant byte of a word is the lowest numbered. */ |
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141 | /* That is true on the H8/300. */ |
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142 | #define BYTES_BIG_ENDIAN 1 |
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143 | |
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144 | /* Define this if most significant word of a multiword number is lowest |
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145 | numbered. |
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146 | This is true on an H8/300 (actually we can make it up, but we choose to |
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147 | be consistent. */ |
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148 | #define WORDS_BIG_ENDIAN 1 |
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149 | |
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150 | /* Number of bits in an addressable storage unit */ |
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151 | #define BITS_PER_UNIT 8 |
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152 | |
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153 | /* Width in bits of a "word", which is the contents of a machine register. |
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154 | Note that this is not necessarily the width of data type `int'; |
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155 | if using 16-bit ints on a 68000, this would still be 32. |
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156 | But on a machine with 16-bit registers, this would be 16. */ |
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157 | #define BITS_PER_WORD (TARGET_H8300H ? 32 : 16) |
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158 | #define MAX_BITS_PER_WORD 32 |
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159 | |
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160 | /* Width of a word, in units (bytes). */ |
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161 | #define UNITS_PER_WORD (TARGET_H8300H ? 4 : 2) |
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162 | #define MIN_UNITS_PER_WORD 2 |
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163 | |
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164 | /* Width in bits of a pointer. |
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165 | See also the macro `Pmode' defined below. */ |
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166 | #define POINTER_SIZE (TARGET_H8300H ? 32 : 16) |
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167 | |
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168 | #define SHORT_TYPE_SIZE 16 |
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169 | #define INT_TYPE_SIZE (TARGET_INT32 ? 32 : 16) |
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170 | #define LONG_TYPE_SIZE 32 |
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171 | #define LONG_LONG_TYPE_SIZE 32 |
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172 | #define FLOAT_TYPE_SIZE 32 |
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173 | #define DOUBLE_TYPE_SIZE 32 |
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174 | #define LONG_DOUBLE_TYPE_SIZE DOUBLE_TYPE_SIZE |
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175 | |
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176 | #define MAX_FIXED_MODE_SIZE 32 |
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177 | |
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178 | /* Allocation boundary (in *bits*) for storing arguments in argument list. */ |
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179 | #define PARM_BOUNDARY (TARGET_H8300H ? 32 : 16) |
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180 | |
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181 | /* Allocation boundary (in *bits*) for the code of a function. */ |
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182 | #define FUNCTION_BOUNDARY 16 |
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183 | |
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184 | /* Alignment of field after `int : 0' in a structure. */ |
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185 | #define EMPTY_FIELD_BOUNDARY 16 |
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186 | |
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187 | /* A bitfield declared as `int' forces `int' alignment for the struct. */ |
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188 | #define PCC_BITFIELD_TYPE_MATTERS 0 |
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189 | |
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190 | /* No data type wants to be aligned rounder than this. */ |
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191 | #define BIGGEST_ALIGNMENT (TARGET_H8300H ? 32 : 16) |
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192 | |
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193 | /* No structure field wants to be aligned rounder than this. */ |
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194 | #define BIGGEST_FIELD_ALIGNMENT (TARGET_H8300H ? 32 : 16) |
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195 | |
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196 | /* The stack goes in 16/32 bit lumps. */ |
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197 | #define STACK_BOUNDARY (TARGET_H8300 ? 16 : 32) |
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198 | |
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199 | /* Define this if move instructions will actually fail to work |
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200 | when given unaligned data. */ |
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201 | /* On the H8/300, longs can be aligned on halfword boundaries, but not |
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202 | byte boundaries. */ |
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203 | #define STRICT_ALIGNMENT 1 |
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204 | |
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205 | /* Standard register usage. */ |
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206 | |
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207 | /* Number of actual hardware registers. |
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208 | The hardware registers are assigned numbers for the compiler |
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209 | from 0 to just below FIRST_PSEUDO_REGISTER. |
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210 | |
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211 | All registers that the compiler knows about must be given numbers, |
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212 | even those that are not normally considered general registers. |
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213 | |
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214 | Reg 8 does not correspond to any hardware register, but instead |
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215 | appears in the RTL as an argument pointer prior to reload, and is |
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216 | eliminated during reloading in favor of either the stack or frame |
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217 | pointer. */ |
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218 | |
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219 | #define FIRST_PSEUDO_REGISTER 9 |
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220 | |
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221 | /* 1 for registers that have pervasive standard uses |
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222 | and are not available for the register allocator. */ |
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223 | |
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224 | #define FIXED_REGISTERS \ |
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225 | { 0, 0, 0, 0, 0, 0, 0, 1, 1} |
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226 | |
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227 | /* 1 for registers not available across function calls. |
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228 | These must include the FIXED_REGISTERS and also any |
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229 | registers that can be used without being saved. |
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230 | The latter must include the registers where values are returned |
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231 | and the register where structure-value addresses are passed. |
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232 | Aside from that, you can include as many other registers as you |
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233 | like. |
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234 | |
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235 | h8 destroys r0,r1,r2,r3. */ |
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236 | |
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237 | #define CALL_USED_REGISTERS \ |
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238 | { 1, 1, 1, 1, 0, 0, 0, 1, 1 } |
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239 | |
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240 | #define REG_ALLOC_ORDER \ |
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241 | { 2, 3, 0, 1, 4, 5, 6, 7, 8} |
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242 | |
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243 | /* Return number of consecutive hard regs needed starting at reg REGNO |
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244 | to hold something of mode MODE. |
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245 | |
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246 | This is ordinarily the length in words of a value of mode MODE |
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247 | but can be less for certain modes in special long registers. */ |
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248 | |
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249 | #define HARD_REGNO_NREGS(REGNO, MODE) \ |
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250 | ((GET_MODE_SIZE (MODE) + UNITS_PER_WORD - 1) / UNITS_PER_WORD) |
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251 | |
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252 | /* Value is 1 if hard register REGNO can hold a value of machine-mode |
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253 | MODE. |
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254 | |
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255 | H8/300: If an even reg, then anything goes. Otherwise the mode must be QI |
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256 | or HI. |
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257 | H8/300H: Anything goes. */ |
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258 | |
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259 | #define HARD_REGNO_MODE_OK(REGNO, MODE) \ |
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260 | (TARGET_H8300 ? (((REGNO)&1)==0) || (MODE==HImode) || (MODE==QImode) \ |
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261 | : 1) |
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262 | |
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263 | /* Value is 1 if it is a good idea to tie two pseudo registers |
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264 | when one has mode MODE1 and one has mode MODE2. |
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265 | If HARD_REGNO_MODE_OK could produce different values for MODE1 and MODE2, |
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266 | for any hard reg, then this must be 0 for correct output. */ |
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267 | #define MODES_TIEABLE_P(MODE1, MODE2) ((MODE1) == (MODE2)) |
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268 | |
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269 | /* Specify the registers used for certain standard purposes. |
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270 | The values of these macros are register numbers. */ |
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271 | |
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272 | /* H8/300 pc is not overloaded on a register. */ |
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273 | |
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274 | /*#define PC_REGNUM 15*/ |
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275 | |
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276 | /* Register to use for pushing function arguments. */ |
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277 | #define STACK_POINTER_REGNUM 7 |
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278 | |
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279 | /* Base register for access to local variables of the function. */ |
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280 | #define FRAME_POINTER_REGNUM 6 |
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281 | |
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282 | /* Value should be nonzero if functions must have frame pointers. |
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283 | Zero means the frame pointer need not be set up (and parms |
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284 | may be accessed via the stack pointer) in functions that seem suitable. |
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285 | This is computed in `reload', in reload1.c. */ |
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286 | #define FRAME_POINTER_REQUIRED 0 |
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287 | |
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288 | /* Base register for access to arguments of the function. */ |
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289 | #define ARG_POINTER_REGNUM 8 |
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290 | |
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291 | /* Register in which static-chain is passed to a function. */ |
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292 | #define STATIC_CHAIN_REGNUM 3 |
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293 | |
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294 | /* Define the classes of registers for register constraints in the |
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295 | machine description. Also define ranges of constants. |
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296 | |
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297 | One of the classes must always be named ALL_REGS and include all hard regs. |
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298 | If there is more than one class, another class must be named NO_REGS |
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299 | and contain no registers. |
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300 | |
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301 | The name GENERAL_REGS must be the name of a class (or an alias for |
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302 | another name such as ALL_REGS). This is the class of registers |
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303 | that is allowed by "g" or "r" in a register constraint. |
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304 | Also, registers outside this class are allocated only when |
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305 | instructions express preferences for them. |
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306 | |
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307 | The classes must be numbered in nondecreasing order; that is, |
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308 | a larger-numbered class must never be contained completely |
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309 | in a smaller-numbered class. |
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310 | |
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311 | For any two classes, it is very desirable that there be another |
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312 | class that represents their union. */ |
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313 | |
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314 | /* The h8 has only one kind of register, but we mustn't do byte by |
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315 | byte operations on the sp, so we keep it as a different class */ |
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316 | |
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317 | enum reg_class { NO_REGS, LONG_REGS, GENERAL_REGS, SP_REG, SP_AND_G_REG, ALL_REGS, LIM_REG_CLASSES }; |
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318 | |
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319 | #define N_REG_CLASSES (int) LIM_REG_CLASSES |
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320 | |
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321 | /* Give names of register classes as strings for dump file. */ |
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322 | |
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323 | #define REG_CLASS_NAMES \ |
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324 | {"NO_REGS", "LONG_REGS", "GENERAL_REGS", "SP_REG", "SP_AND_G_REG", "ALL_REGS", "LIM_REGS" } |
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325 | |
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326 | /* Define which registers fit in which classes. |
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327 | This is an initializer for a vector of HARD_REG_SET |
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328 | of length N_REG_CLASSES. */ |
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329 | |
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330 | #define REG_CLASS_CONTENTS \ |
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331 | { 0, /* No regs */ \ |
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332 | 0x07f, /* LONG_REGS */ \ |
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333 | 0x07f, /* GENERAL_REGS */ \ |
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334 | 0x080, /* SP_REG */ \ |
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335 | 0x0ff, /* SP_AND_G_REG */ \ |
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336 | 0x1ff, /* ALL_REGS */ \ |
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337 | } |
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338 | |
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339 | /* The same information, inverted: |
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340 | Return the class number of the smallest class containing |
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341 | reg number REGNO. This could be a conditional expression |
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342 | or could index an array. */ |
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343 | |
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344 | #define REGNO_REG_CLASS(REGNO) \ |
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345 | ((REGNO) < 7 ? LONG_REGS : \ |
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346 | (REGNO) == 7 ? SP_REG : \ |
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347 | GENERAL_REGS) |
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348 | |
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349 | /* The class value for index registers, and the one for base regs. */ |
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350 | |
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351 | #define INDEX_REG_CLASS NO_REGS |
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352 | #define BASE_REG_CLASS GENERAL_REGS |
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353 | |
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354 | /* Get reg_class from a letter such as appears in the machine description. */ |
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355 | |
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356 | #define REG_CLASS_FROM_LETTER(C) \ |
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357 | ((C) == 'a' ? (SP_REG) : (C) == 'l' ? (LONG_REGS) : (NO_REGS)) |
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358 | |
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359 | /* The letters I, J, K, L, M, N, O, P in a register constraint string |
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360 | can be used to stand for particular ranges of immediate operands. |
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361 | This macro defines what the ranges are. |
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362 | C is the letter, and VALUE is a constant value. |
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363 | Return 1 if VALUE is in the range specified by C. */ |
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364 | |
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365 | #define CONST_OK_FOR_I(VALUE) ((VALUE) == 0) |
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366 | #define CONST_OK_FOR_J(VALUE) ((unsigned) (VALUE) < 256) |
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367 | #define CONST_OK_FOR_K(VALUE) (((VALUE) == 1) || (VALUE) == 2) |
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368 | #define CONST_OK_FOR_L(VALUE) (((VALUE) == -1) || (VALUE) == -2) |
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369 | #define CONST_OK_FOR_M(VALUE) (((VALUE) == 3) || (VALUE) == 4) |
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370 | #define CONST_OK_FOR_N(VALUE) (((VALUE) == -3) || (VALUE) == -4) |
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371 | #define CONST_OK_FOR_O(VALUE) (ok_for_bclr (VALUE)) |
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372 | #define CONST_OK_FOR_P(VALUE) (small_power_of_two (VALUE)) |
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373 | |
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374 | #define CONST_OK_FOR_LETTER_P(VALUE, C) \ |
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375 | ((C) == 'I' ? CONST_OK_FOR_I (VALUE) : \ |
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376 | (C) == 'J' ? CONST_OK_FOR_J (VALUE) : \ |
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377 | (C) == 'K' ? CONST_OK_FOR_K (VALUE) : \ |
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378 | (C) == 'L' ? CONST_OK_FOR_L (VALUE) : \ |
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379 | (C) == 'M' ? CONST_OK_FOR_M (VALUE) : \ |
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380 | (C) == 'N' ? CONST_OK_FOR_N (VALUE) : \ |
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381 | (C) == 'O' ? CONST_OK_FOR_O (VALUE) : \ |
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382 | (C) == 'P' ? CONST_OK_FOR_P(VALUE) : \ |
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383 | 0) |
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384 | |
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385 | /* Similar, but for floating constants, and defining letters G and H. |
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386 | Here VALUE is the CONST_DOUBLE rtx itself. |
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387 | |
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388 | `G' is a floating-point zero. */ |
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389 | |
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390 | #define CONST_DOUBLE_OK_FOR_LETTER_P(VALUE, C) \ |
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391 | ((C) == 'G' ? (VALUE) == CONST0_RTX (DFmode) \ |
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392 | : 0) |
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393 | |
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394 | /* Given an rtx X being reloaded into a reg required to be |
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395 | in class CLASS, return the class of reg to actually use. |
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396 | In general this is just CLASS; but on some machines |
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397 | in some cases it is preferable to use a more restrictive class. */ |
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398 | |
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399 | #define PREFERRED_RELOAD_CLASS(X,CLASS) (CLASS) |
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400 | |
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401 | /* Return the maximum number of consecutive registers |
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402 | needed to represent mode MODE in a register of class CLASS. */ |
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403 | |
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404 | /* On the H8, this is the size of MODE in words. */ |
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405 | |
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406 | #define CLASS_MAX_NREGS(CLASS, MODE) \ |
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407 | ((GET_MODE_SIZE (MODE) + UNITS_PER_WORD - 1) / UNITS_PER_WORD) |
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408 | |
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409 | /* Any SI register to register move may need to be reloaded, |
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410 | so define REGISTER_MOVE_COST to be > 2 so that reload never |
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411 | shortcuts. */ |
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412 | |
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413 | #define REGISTER_MOVE_COST(CLASS1, CLASS2) 3 |
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414 | |
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415 | /* Stack layout; function entry, exit and calling. */ |
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416 | |
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417 | /* Define this if pushing a word on the stack |
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418 | makes the stack pointer a smaller address. */ |
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419 | |
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420 | #define STACK_GROWS_DOWNWARD |
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421 | |
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422 | /* Define this if the nominal address of the stack frame |
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423 | is at the high-address end of the local variables; |
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424 | that is, each additional local variable allocated |
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425 | goes at a more negative offset in the frame. */ |
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426 | |
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427 | #define FRAME_GROWS_DOWNWARD |
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428 | |
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429 | /* Offset within stack frame to start allocating local variables at. |
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430 | If FRAME_GROWS_DOWNWARD, this is the offset to the END of the |
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431 | first local allocated. Otherwise, it is the offset to the BEGINNING |
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432 | of the first local allocated. */ |
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433 | |
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434 | #define STARTING_FRAME_OFFSET 0 |
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435 | |
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436 | /* If we generate an insn to push BYTES bytes, |
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437 | this says how many the stack pointer really advances by. |
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438 | |
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439 | On the H8/300, @-sp really pushes a byte if you ask it to - but that's |
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440 | dangerous, so we claim that it always pushes a word, then we catch |
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441 | the mov.b rx,@-sp and turn it into a mov.w rx,@-sp on output. |
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442 | |
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443 | On the H8/300h, we simplify TARGET_QUICKCALL by setting this to 4 and doing |
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444 | a similar thing. */ |
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445 | |
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446 | #define PUSH_ROUNDING(BYTES) \ |
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447 | (((BYTES) + PARM_BOUNDARY/8 - 1) & -PARM_BOUNDARY/8) |
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448 | |
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449 | /* Offset of first parameter from the argument pointer register value. */ |
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450 | /* Is equal to the size of the saved fp + pc, even if an fp isn't |
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451 | saved since the value is used before we know. */ |
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452 | |
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453 | #define FIRST_PARM_OFFSET(FNDECL) 0 |
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454 | |
---|
455 | /* Value is the number of bytes of arguments automatically |
---|
456 | popped when returning from a subroutine call. |
---|
457 | FUNDECL is the declaration node of the function (as a tree), |
---|
458 | FUNTYPE is the data type of the function (as a tree), |
---|
459 | or for a library call it is an identifier node for the subroutine name. |
---|
460 | SIZE is the number of bytes of arguments passed on the stack. |
---|
461 | |
---|
462 | On the H8 the return does not pop anything. */ |
---|
463 | |
---|
464 | #define RETURN_POPS_ARGS(FUNDECL,FUNTYPE,SIZE) 0 |
---|
465 | |
---|
466 | /* Definitions for register eliminations. |
---|
467 | |
---|
468 | This is an array of structures. Each structure initializes one pair |
---|
469 | of eliminable registers. The "from" register number is given first, |
---|
470 | followed by "to". Eliminations of the same "from" register are listed |
---|
471 | in order of preference. |
---|
472 | |
---|
473 | We have two registers that can be eliminated on the h8300. First, the |
---|
474 | frame pointer register can often be eliminated in favor of the stack |
---|
475 | pointer register. Secondly, the argument pointer register can always be |
---|
476 | eliminated; it is replaced with either the stack or frame pointer. */ |
---|
477 | |
---|
478 | #define ELIMINABLE_REGS \ |
---|
479 | {{ ARG_POINTER_REGNUM, STACK_POINTER_REGNUM}, \ |
---|
480 | { ARG_POINTER_REGNUM, FRAME_POINTER_REGNUM}, \ |
---|
481 | { FRAME_POINTER_REGNUM, STACK_POINTER_REGNUM}} |
---|
482 | |
---|
483 | /* Given FROM and TO register numbers, say whether this elimination is allowed. |
---|
484 | Frame pointer elimination is automatically handled. |
---|
485 | |
---|
486 | For the h8300, if frame pointer elimination is being done, we would like to |
---|
487 | convert ap into sp, not fp. |
---|
488 | |
---|
489 | All other eliminations are valid. */ |
---|
490 | |
---|
491 | #define CAN_ELIMINATE(FROM, TO) \ |
---|
492 | ((FROM) == ARG_POINTER_REGNUM && (TO) == STACK_POINTER_REGNUM \ |
---|
493 | ? ! frame_pointer_needed \ |
---|
494 | : 1) |
---|
495 | |
---|
496 | /* Define the offset between two registers, one to be eliminated, and the other |
---|
497 | its replacement, at the start of a routine. */ |
---|
498 | |
---|
499 | #define INITIAL_ELIMINATION_OFFSET(FROM, TO, OFFSET) \ |
---|
500 | OFFSET = initial_offset (FROM, TO) |
---|
501 | |
---|
502 | /* Define how to find the value returned by a function. |
---|
503 | VALTYPE is the data type of the value (as a tree). |
---|
504 | If the precise function being called is known, FUNC is its FUNCTION_DECL; |
---|
505 | otherwise, FUNC is 0. |
---|
506 | |
---|
507 | On the H8 the return value is in R0/R1. */ |
---|
508 | |
---|
509 | #define FUNCTION_VALUE(VALTYPE, FUNC) \ |
---|
510 | gen_rtx (REG, TYPE_MODE (VALTYPE), 0) |
---|
511 | |
---|
512 | /* Define how to find the value returned by a library function |
---|
513 | assuming the value has mode MODE. */ |
---|
514 | |
---|
515 | /* On the h8 the return value is in R0/R1 */ |
---|
516 | |
---|
517 | #define LIBCALL_VALUE(MODE) \ |
---|
518 | gen_rtx (REG, MODE, 0) |
---|
519 | |
---|
520 | /* 1 if N is a possible register number for a function value. |
---|
521 | On the H8, R0 is the only register thus used. */ |
---|
522 | |
---|
523 | #define FUNCTION_VALUE_REGNO_P(N) ((N) == 0) |
---|
524 | |
---|
525 | /* Define this if PCC uses the nonreentrant convention for returning |
---|
526 | structure and union values. */ |
---|
527 | |
---|
528 | /*#define PCC_STATIC_STRUCT_RETURN*/ |
---|
529 | |
---|
530 | /* 1 if N is a possible register number for function argument passing. |
---|
531 | On the H8, no registers are used in this way. */ |
---|
532 | /* ??? What about TARGET_QUICKCALL? */ |
---|
533 | |
---|
534 | #define FUNCTION_ARG_REGNO_P(N) 0 |
---|
535 | |
---|
536 | /* Register in which address to store a structure value |
---|
537 | is passed to a function. */ |
---|
538 | |
---|
539 | #define STRUCT_VALUE 0 |
---|
540 | |
---|
541 | /* Return true if X should be returned in memory. */ |
---|
542 | /* ??? This will return small structs in regs. */ |
---|
543 | #define RETURN_IN_MEMORY(X) (GET_MODE_SIZE (TYPE_MODE (X)) > 4) |
---|
544 | |
---|
545 | /* When defined, the compiler allows registers explicitly used in the |
---|
546 | rtl to be used as spill registers but prevents the compiler from |
---|
547 | extending the lifetime of these registers. */ |
---|
548 | |
---|
549 | #define SMALL_REGISTER_CLASSES |
---|
550 | |
---|
551 | /* Define a data type for recording info about an argument list |
---|
552 | during the scan of that argument list. This data type should |
---|
553 | hold all necessary information about the function itself |
---|
554 | and about the args processed so far, enough to enable macros |
---|
555 | such as FUNCTION_ARG to determine where the next arg should go. |
---|
556 | |
---|
557 | On the H8/300, this is a two item struct, the first is the number of bytes |
---|
558 | scanned so far and the second is the rtx of the called library |
---|
559 | function if any. */ |
---|
560 | |
---|
561 | #define CUMULATIVE_ARGS struct cum_arg |
---|
562 | struct cum_arg { int nbytes; struct rtx_def * libcall; }; |
---|
563 | |
---|
564 | /* Initialize a variable CUM of type CUMULATIVE_ARGS |
---|
565 | for a call to a function whose data type is FNTYPE. |
---|
566 | For a library call, FNTYPE is 0. |
---|
567 | |
---|
568 | On the H8/300, the offset starts at 0. */ |
---|
569 | |
---|
570 | #define INIT_CUMULATIVE_ARGS(CUM,FNTYPE,LIBNAME) \ |
---|
571 | ((CUM).nbytes = 0, (CUM).libcall = LIBNAME) |
---|
572 | |
---|
573 | /* Update the data in CUM to advance over an argument |
---|
574 | of mode MODE and data type TYPE. |
---|
575 | (TYPE is null for libcalls where that information may not be available.) */ |
---|
576 | |
---|
577 | #define FUNCTION_ARG_ADVANCE(CUM, MODE, TYPE, NAMED) \ |
---|
578 | ((CUM).nbytes += ((MODE) != BLKmode \ |
---|
579 | ? (GET_MODE_SIZE (MODE) + UNITS_PER_WORD - 1) & -UNITS_PER_WORD \ |
---|
580 | : (int_size_in_bytes (TYPE) + UNITS_PER_WORD - 1) & -UNITS_PER_WORD)) |
---|
581 | |
---|
582 | /* Define where to put the arguments to a function. |
---|
583 | Value is zero to push the argument on the stack, |
---|
584 | or a hard register in which to store the argument. |
---|
585 | |
---|
586 | MODE is the argument's machine mode. |
---|
587 | TYPE is the data type of the argument (as a tree). |
---|
588 | This is null for libcalls where that information may |
---|
589 | not be available. |
---|
590 | CUM is a variable of type CUMULATIVE_ARGS which gives info about |
---|
591 | the preceding args and about the function being called. |
---|
592 | NAMED is nonzero if this argument is a named parameter |
---|
593 | (otherwise it is an extra parameter matching an ellipsis). */ |
---|
594 | |
---|
595 | /* On the H8/300 all normal args are pushed, unless -mquickcall in which |
---|
596 | case the first 3 arguments are passed in registers. |
---|
597 | See function `function_arg'. */ |
---|
598 | |
---|
599 | struct rtx_def *function_arg(); |
---|
600 | #define FUNCTION_ARG(CUM, MODE, TYPE, NAMED) \ |
---|
601 | function_arg (&CUM, MODE, TYPE, NAMED) |
---|
602 | |
---|
603 | /* Perform any needed actions needed for a function that is receiving a |
---|
604 | variable number of arguments. */ |
---|
605 | |
---|
606 | extern int current_function_anonymous_args; |
---|
607 | #define SETUP_INCOMING_VARARGS(ASF, MODE, TYPE, PAS, ST) \ |
---|
608 | current_function_anonymous_args = 1; |
---|
609 | |
---|
610 | /* Generate assembly output for the start of a function. */ |
---|
611 | |
---|
612 | #define FUNCTION_PROLOGUE(FILE, SIZE) \ |
---|
613 | function_prologue (FILE, SIZE) |
---|
614 | |
---|
615 | /* Output assembler code to FILE to increment profiler label # LABELNO |
---|
616 | for profiling a function entry. */ |
---|
617 | |
---|
618 | #define FUNCTION_PROFILER(FILE, LABELNO) \ |
---|
619 | fprintf (FILE, "\t%s\t#LP%d,%s\n\tjsr @mcount\n", \ |
---|
620 | h8_mov_op, (LABELNO), h8_reg_names[0]); |
---|
621 | |
---|
622 | /* Output assembler code to FILE to initialize this source file's |
---|
623 | basic block profiling info, if that has not already been done. */ |
---|
624 | /* ??? @LPBX0 is moved into r0 twice. */ |
---|
625 | |
---|
626 | #define FUNCTION_BLOCK_PROFILER(FILE, LABELNO) \ |
---|
627 | fprintf (FILE, "\t%s\t%s\n\t%s\t@LPBX0,%s\n\tbne LPI%d\n\t%s\t@LPBX0,%s\n\t%s\t%s\n\tjsr\t@__bb_init_func\nLPI%d:\t%s\t%s\n", \ |
---|
628 | h8_push_op, h8_reg_names[0], \ |
---|
629 | h8_mov_op, h8_reg_names[0], \ |
---|
630 | (LABELNO), \ |
---|
631 | h8_mov_op, h8_reg_names[0], \ |
---|
632 | h8_push_op, h8_reg_names[0], \ |
---|
633 | (LABELNO), \ |
---|
634 | h8_pop_op, h8_reg_names[0]); |
---|
635 | |
---|
636 | /* Output assembler code to FILE to increment the entry-count for |
---|
637 | the BLOCKNO'th basic block in this source file. This is a real pain in the |
---|
638 | sphincter on a VAX, since we do not want to change any of the bits in the |
---|
639 | processor status word. The way it is done here, it is pushed onto the stack |
---|
640 | before any flags have changed, and then the stack is fixed up to account for |
---|
641 | the fact that the instruction to restore the flags only reads a word. |
---|
642 | It may seem a bit clumsy, but at least it works. */ |
---|
643 | /* ??? This one needs work. */ |
---|
644 | |
---|
645 | #define BLOCK_PROFILER(FILE, BLOCKNO) \ |
---|
646 | fprintf (FILE, "\tmovpsl -(sp)\n\tmovw (sp),2(sp)\n\taddl2 $2,sp\n\taddl2 $1,LPBX2+%d\n\tbicpsw $255\n\tbispsw (sp)+\n", \ |
---|
647 | 4 * BLOCKNO) |
---|
648 | |
---|
649 | /* EXIT_IGNORE_STACK should be nonzero if, when returning from a function, |
---|
650 | the stack pointer does not matter. The value is tested only in |
---|
651 | functions that have frame pointers. |
---|
652 | No definition is equivalent to always zero. */ |
---|
653 | |
---|
654 | #define EXIT_IGNORE_STACK 0 |
---|
655 | |
---|
656 | /* This macro generates the assembly code for function exit, |
---|
657 | on machines that need it. If FUNCTION_EPILOGUE is not defined |
---|
658 | then individual return instructions are generated for each |
---|
659 | return statement. Args are same as for FUNCTION_PROLOGUE. */ |
---|
660 | |
---|
661 | #define FUNCTION_EPILOGUE(FILE, SIZE) \ |
---|
662 | function_epilogue (FILE, SIZE) |
---|
663 | |
---|
664 | /* Output assembler code for a block containing the constant parts |
---|
665 | of a trampoline, leaving space for the variable parts. |
---|
666 | |
---|
667 | H8/300 |
---|
668 | vvvv context |
---|
669 | 1 0000 7900xxxx mov.w #0x1234,r3 |
---|
670 | 2 0004 5A00xxxx jmp @0x1234 |
---|
671 | ^^^^ function |
---|
672 | |
---|
673 | H8/300H |
---|
674 | vvvvvvvv context |
---|
675 | 2 0000 7A00xxxxxxxx mov.l #0x12345678,er3 |
---|
676 | 3 0006 5Axxxxxx jmp @0x123456 |
---|
677 | ^^^^^^ function |
---|
678 | */ |
---|
679 | |
---|
680 | #define TRAMPOLINE_TEMPLATE(FILE) \ |
---|
681 | do { \ |
---|
682 | if (TARGET_H8300) \ |
---|
683 | { \ |
---|
684 | fprintf (FILE, "\tmov.w #0x1234,r3\n"); \ |
---|
685 | fprintf (FILE, "\tjmp @0x1234\n"); \ |
---|
686 | } \ |
---|
687 | else \ |
---|
688 | { \ |
---|
689 | fprintf (FILE, "\tmov.l #0x12345678,er3\n"); \ |
---|
690 | fprintf (FILE, "\tjmp @0x123456\n"); \ |
---|
691 | } \ |
---|
692 | } while (0) |
---|
693 | |
---|
694 | /* Length in units of the trampoline for entering a nested function. */ |
---|
695 | |
---|
696 | #define TRAMPOLINE_SIZE (TARGET_H8300 ? 8 : 12) |
---|
697 | |
---|
698 | /* Emit RTL insns to initialize the variable parts of a trampoline. |
---|
699 | FNADDR is an RTX for the address of the function's pure code. |
---|
700 | CXT is an RTX for the static chain value for the function. */ |
---|
701 | |
---|
702 | #define INITIALIZE_TRAMPOLINE(TRAMP, FNADDR, CXT) \ |
---|
703 | { \ |
---|
704 | enum machine_mode mode = TARGET_H8300H ? SImode : HImode; \ |
---|
705 | emit_move_insn (gen_rtx (MEM, mode, plus_constant ((TRAMP), 2)), CXT); \ |
---|
706 | emit_move_insn (gen_rtx (MEM, mode, plus_constant ((TRAMP), 6)), FNADDR); \ |
---|
707 | if (TARGET_H8300H) \ |
---|
708 | emit_move_insn (gen_rtx (MEM, QImode, plus_constant ((TRAMP), 6)), GEN_INT (0x5A)); \ |
---|
709 | } |
---|
710 | |
---|
711 | /* Addressing modes, and classification of registers for them. */ |
---|
712 | |
---|
713 | #define HAVE_POST_INCREMENT |
---|
714 | /*#define HAVE_POST_DECREMENT */ |
---|
715 | |
---|
716 | #define HAVE_PRE_DECREMENT |
---|
717 | /*#define HAVE_PRE_INCREMENT */ |
---|
718 | |
---|
719 | /* Macros to check register numbers against specific register classes. */ |
---|
720 | |
---|
721 | /* These assume that REGNO is a hard or pseudo reg number. |
---|
722 | They give nonzero only if REGNO is a hard reg of the suitable class |
---|
723 | or a pseudo reg currently allocated to a suitable hard reg. |
---|
724 | Since they use reg_renumber, they are safe only once reg_renumber |
---|
725 | has been allocated, which happens in local-alloc.c. */ |
---|
726 | |
---|
727 | #define REGNO_OK_FOR_INDEX_P(regno) 0 |
---|
728 | |
---|
729 | #define REGNO_OK_FOR_BASE_P(regno) \ |
---|
730 | ((regno) < FIRST_PSEUDO_REGISTER || reg_renumber[regno] >= 0) |
---|
731 | |
---|
732 | /* Maximum number of registers that can appear in a valid memory address. */ |
---|
733 | |
---|
734 | #define MAX_REGS_PER_ADDRESS 1 |
---|
735 | |
---|
736 | /* 1 if X is an rtx for a constant that is a valid address. */ |
---|
737 | |
---|
738 | #define CONSTANT_ADDRESS_P(X) \ |
---|
739 | (GET_CODE (X) == LABEL_REF || GET_CODE (X) == SYMBOL_REF \ |
---|
740 | || (GET_CODE (X) == CONST_INT \ |
---|
741 | /* We handle signed and unsigned offsets here. */ \ |
---|
742 | && INTVAL (X) > (TARGET_H8300 ? -0x10000 : -0x1000000) \ |
---|
743 | && INTVAL (X) < (TARGET_H8300 ? 0x10000 : 0x1000000)) \ |
---|
744 | || GET_CODE (X) == CONST \ |
---|
745 | || GET_CODE (X) == HIGH) |
---|
746 | |
---|
747 | /* Nonzero if the constant value X is a legitimate general operand. |
---|
748 | It is given that X satisfies CONSTANT_P or is a CONST_DOUBLE. */ |
---|
749 | |
---|
750 | #define LEGITIMATE_CONSTANT_P(X) (GET_CODE (X) != CONST_DOUBLE) |
---|
751 | |
---|
752 | /* The macros REG_OK_FOR..._P assume that the arg is a REG rtx |
---|
753 | and check its validity for a certain class. |
---|
754 | We have two alternate definitions for each of them. |
---|
755 | The usual definition accepts all pseudo regs; the other rejects |
---|
756 | them unless they have been allocated suitable hard regs. |
---|
757 | The symbol REG_OK_STRICT causes the latter definition to be used. |
---|
758 | |
---|
759 | Most source files want to accept pseudo regs in the hope that |
---|
760 | they will get allocated to the class that the insn wants them to be in. |
---|
761 | Source files for reload pass need to be strict. |
---|
762 | After reload, it makes no difference, since pseudo regs have |
---|
763 | been eliminated by then. */ |
---|
764 | |
---|
765 | #ifndef REG_OK_STRICT |
---|
766 | |
---|
767 | /* Nonzero if X is a hard reg that can be used as an index |
---|
768 | or if it is a pseudo reg. */ |
---|
769 | #define REG_OK_FOR_INDEX_P(X) 0 |
---|
770 | /* Nonzero if X is a hard reg that can be used as a base reg |
---|
771 | or if it is a pseudo reg. */ |
---|
772 | #define REG_OK_FOR_BASE_P(X) 1 |
---|
773 | #define REG_OK_FOR_INDEX_P_STRICT(X) REGNO_OK_FOR_INDEX_P (REGNO (X)) |
---|
774 | #define REG_OK_FOR_BASE_P_STRICT(X) REGNO_OK_FOR_BASE_P (REGNO (X)) |
---|
775 | #define STRICT 0 |
---|
776 | |
---|
777 | #else |
---|
778 | |
---|
779 | /* Nonzero if X is a hard reg that can be used as an index. */ |
---|
780 | #define REG_OK_FOR_INDEX_P(X) REGNO_OK_FOR_INDEX_P (REGNO (X)) |
---|
781 | /* Nonzero if X is a hard reg that can be used as a base reg. */ |
---|
782 | #define REG_OK_FOR_BASE_P(X) REGNO_OK_FOR_BASE_P (REGNO (X)) |
---|
783 | #define STRICT 1 |
---|
784 | |
---|
785 | #endif |
---|
786 | |
---|
787 | /* Extra constraints - 'U' if for an operand valid for a bset |
---|
788 | destination; i.e. a register or register indirect target. */ |
---|
789 | #define OK_FOR_U(OP) \ |
---|
790 | ((GET_CODE (OP) == REG && REG_OK_FOR_BASE_P (OP)) \ |
---|
791 | || (GET_CODE (OP) == MEM && GET_CODE (XEXP (OP, 0)) == REG \ |
---|
792 | && REG_OK_FOR_BASE_P (XEXP (OP, 0)))) |
---|
793 | |
---|
794 | #define EXTRA_CONSTRAINT(OP, C) \ |
---|
795 | ((C) == 'U' ? OK_FOR_U (OP) : 0) |
---|
796 | |
---|
797 | /* GO_IF_LEGITIMATE_ADDRESS recognizes an RTL expression |
---|
798 | that is a valid memory address for an instruction. |
---|
799 | The MODE argument is the machine mode for the MEM expression |
---|
800 | that wants to use this address. |
---|
801 | |
---|
802 | The other macros defined here are used only in GO_IF_LEGITIMATE_ADDRESS, |
---|
803 | except for CONSTANT_ADDRESS_P which is actually |
---|
804 | machine-independent. |
---|
805 | |
---|
806 | On the H8/300, a legitimate address has the form |
---|
807 | REG, REG+CONSTANT_ADDRESS or CONSTANT_ADDRESS. */ |
---|
808 | |
---|
809 | /* Accept either REG or SUBREG where a register is valid. */ |
---|
810 | |
---|
811 | #define RTX_OK_FOR_BASE_P(X) \ |
---|
812 | ((REG_P (X) && REG_OK_FOR_BASE_P (X)) \ |
---|
813 | || (GET_CODE (X) == SUBREG && REG_P (SUBREG_REG (X)) \ |
---|
814 | && REG_OK_FOR_BASE_P (SUBREG_REG (X)))) |
---|
815 | |
---|
816 | #define GO_IF_LEGITIMATE_ADDRESS(MODE, X, ADDR) \ |
---|
817 | if (RTX_OK_FOR_BASE_P (X)) goto ADDR; \ |
---|
818 | if (CONSTANT_ADDRESS_P (X)) goto ADDR; \ |
---|
819 | if (GET_CODE (X) == PLUS \ |
---|
820 | && CONSTANT_ADDRESS_P (XEXP (X, 1)) \ |
---|
821 | && RTX_OK_FOR_BASE_P (XEXP (X, 0))) goto ADDR; |
---|
822 | |
---|
823 | /* Try machine-dependent ways of modifying an illegitimate address |
---|
824 | to be legitimate. If we find one, return the new, valid address. |
---|
825 | This macro is used in only one place: `memory_address' in explow.c. |
---|
826 | |
---|
827 | OLDX is the address as it was before break_out_memory_refs was called. |
---|
828 | In some cases it is useful to look at this to decide what needs to be done. |
---|
829 | |
---|
830 | MODE and WIN are passed so that this macro can use |
---|
831 | GO_IF_LEGITIMATE_ADDRESS. |
---|
832 | |
---|
833 | It is always safe for this macro to do nothing. It exists to recognize |
---|
834 | opportunities to optimize the output. |
---|
835 | |
---|
836 | For the H8/300, don't do anything. */ |
---|
837 | |
---|
838 | #define LEGITIMIZE_ADDRESS(X,OLDX,MODE,WIN) {} |
---|
839 | |
---|
840 | /* Go to LABEL if ADDR (a legitimate address expression) |
---|
841 | has an effect that depends on the machine mode it is used for. |
---|
842 | |
---|
843 | On the H8/300, the predecrement and postincrement address depend thus |
---|
844 | (the amount of decrement or increment being the length of the operand) |
---|
845 | and all indexed address depend thus (because the index scale factor |
---|
846 | is the length of the operand). */ |
---|
847 | |
---|
848 | #define GO_IF_MODE_DEPENDENT_ADDRESS(ADDR,LABEL) \ |
---|
849 | if (GET_CODE (ADDR) == POST_INC || GET_CODE (ADDR) == PRE_DEC) goto LABEL; |
---|
850 | |
---|
851 | /* Specify the machine mode that this machine uses |
---|
852 | for the index in the tablejump instruction. */ |
---|
853 | #define CASE_VECTOR_MODE Pmode |
---|
854 | |
---|
855 | /* Define this if the case instruction expects the table |
---|
856 | to contain offsets from the address of the table. |
---|
857 | Do not define this if the table should contain absolute addresses. */ |
---|
858 | /*#define CASE_VECTOR_PC_RELATIVE*/ |
---|
859 | |
---|
860 | /* Define this if the case instruction drops through after the table |
---|
861 | when the index is out of range. Don't define it if the case insn |
---|
862 | jumps to the default label instead. */ |
---|
863 | #define CASE_DROPS_THROUGH |
---|
864 | |
---|
865 | /* Specify the tree operation to be used to convert reals to integers. */ |
---|
866 | #define IMPLICIT_FIX_EXPR FIX_ROUND_EXPR |
---|
867 | |
---|
868 | /* This is the kind of divide that is easiest to do in the general case. */ |
---|
869 | #define EASY_DIV_EXPR TRUNC_DIV_EXPR |
---|
870 | |
---|
871 | /* Define this as 1 if `char' should by default be signed; else as 0. |
---|
872 | |
---|
873 | On the H8/300, sign extension is expensive, so we'll say that chars |
---|
874 | are unsigned. */ |
---|
875 | #define DEFAULT_SIGNED_CHAR 0 |
---|
876 | |
---|
877 | /* This flag, if defined, says the same insns that convert to a signed fixnum |
---|
878 | also convert validly to an unsigned one. */ |
---|
879 | #define FIXUNS_TRUNC_LIKE_FIX_TRUNC |
---|
880 | |
---|
881 | /* Max number of bytes we can move from memory to memory |
---|
882 | in one reasonably fast instruction. */ |
---|
883 | #define MOVE_MAX (TARGET_H8300H ? 4 : 2) |
---|
884 | #define MAX_MOVE_MAX 4 |
---|
885 | |
---|
886 | /* Define this if zero-extension is slow (more than one real instruction). */ |
---|
887 | /* #define SLOW_ZERO_EXTEND */ |
---|
888 | |
---|
889 | /* Nonzero if access to memory by bytes is slow and undesirable. */ |
---|
890 | #define SLOW_BYTE_ACCESS TARGET_SLOWBYTE |
---|
891 | |
---|
892 | /* Define if shifts truncate the shift count |
---|
893 | which implies one can omit a sign-extension or zero-extension |
---|
894 | of a shift count. */ |
---|
895 | /* #define SHIFT_COUNT_TRUNCATED */ |
---|
896 | |
---|
897 | /* Value is 1 if truncating an integer of INPREC bits to OUTPREC bits |
---|
898 | is done just by pretending it is already truncated. */ |
---|
899 | #define TRULY_NOOP_TRUNCATION(OUTPREC, INPREC) 1 |
---|
900 | |
---|
901 | /* Specify the machine mode that pointers have. |
---|
902 | After generation of rtl, the compiler makes no further distinction |
---|
903 | between pointers and any other objects of this machine mode. */ |
---|
904 | #define Pmode (TARGET_H8300H ? SImode : HImode) |
---|
905 | |
---|
906 | /* ANSI C types. |
---|
907 | We use longs for the 300h because ints can be 16 or 32. |
---|
908 | GCC requires SIZE_TYPE to be the same size as pointers. */ |
---|
909 | #define NO_BUILTIN_SIZE_TYPE |
---|
910 | #define NO_BUILTIN_PTRDIFF_TYPE |
---|
911 | #define SIZE_TYPE (TARGET_H8300 ? "unsigned int" : "long unsigned int") |
---|
912 | #define PTRDIFF_TYPE (TARGET_H8300 ? "int" : "long int") |
---|
913 | |
---|
914 | #define WCHAR_TYPE "short unsigned int" |
---|
915 | #define WCHAR_TYPE_SIZE 16 |
---|
916 | #define MAX_WCHAR_TYPE_SIZE 16 |
---|
917 | |
---|
918 | /* A function address in a call instruction |
---|
919 | is a byte address (for indexing purposes) |
---|
920 | so give the MEM rtx a byte's mode. */ |
---|
921 | #define FUNCTION_MODE QImode |
---|
922 | |
---|
923 | /* Compute the cost of computing a constant rtl expression RTX |
---|
924 | whose rtx-code is CODE. The body of this macro is a portion |
---|
925 | of a switch statement. If the code is computed here, |
---|
926 | return it with a return statement. Otherwise, break from the switch. */ |
---|
927 | |
---|
928 | #define CONST_COSTS(RTX,CODE,OUTER_CODE) \ |
---|
929 | default: { int _zxy= const_costs(RTX, CODE); \ |
---|
930 | if(_zxy) return _zxy; break;} |
---|
931 | |
---|
932 | #define BRANCH_COST 0 |
---|
933 | |
---|
934 | /* We say that MOD and DIV are so cheap because otherwise we'll |
---|
935 | generate some really horrible code for division of a power of two. */ |
---|
936 | |
---|
937 | /* Provide the costs of a rtl expression. This is in the body of a |
---|
938 | switch on CODE. */ |
---|
939 | /* ??? Shifts need to have a *much* higher cost than this. */ |
---|
940 | |
---|
941 | #define RTX_COSTS(RTX,CODE,OUTER_CODE) \ |
---|
942 | case MOD: \ |
---|
943 | case DIV: \ |
---|
944 | return 60; \ |
---|
945 | case MULT: \ |
---|
946 | return 20; \ |
---|
947 | case ASHIFT: \ |
---|
948 | case ASHIFTRT: \ |
---|
949 | case LSHIFTRT: \ |
---|
950 | case ROTATE: \ |
---|
951 | case ROTATERT: \ |
---|
952 | if (GET_MODE (RTX) == HImode) return 2; \ |
---|
953 | return 8; |
---|
954 | |
---|
955 | /* Tell final.c how to eliminate redundant test instructions. */ |
---|
956 | |
---|
957 | /* Here we define machine-dependent flags and fields in cc_status |
---|
958 | (see `conditions.h'). No extra ones are needed for the vax. */ |
---|
959 | |
---|
960 | /* Store in cc_status the expressions |
---|
961 | that the condition codes will describe |
---|
962 | after execution of an instruction whose pattern is EXP. |
---|
963 | Do not alter them if the instruction would not alter the cc's. */ |
---|
964 | |
---|
965 | #define NOTICE_UPDATE_CC(EXP, INSN) notice_update_cc(EXP, INSN) |
---|
966 | #define CC_DONE_CBIT 0400 |
---|
967 | |
---|
968 | #define OUTPUT_JUMP(NORMAL, FLOAT, NO_OV) \ |
---|
969 | { \ |
---|
970 | if (cc_status.flags & CC_NO_OVERFLOW) \ |
---|
971 | return NO_OV; \ |
---|
972 | return NORMAL; \ |
---|
973 | } |
---|
974 | |
---|
975 | /* Control the assembler format that we output. */ |
---|
976 | |
---|
977 | #define ASM_IDENTIFY_GCC /* nothing */ |
---|
978 | |
---|
979 | /* Output at beginning/end of assembler file. */ |
---|
980 | |
---|
981 | #define ASM_FILE_START(FILE) asm_file_start(FILE) |
---|
982 | |
---|
983 | #define ASM_FILE_END(FILE) asm_file_end(FILE) |
---|
984 | |
---|
985 | /* Output to assembler file text saying following lines |
---|
986 | may contain character constants, extra white space, comments, etc. */ |
---|
987 | |
---|
988 | #define ASM_APP_ON "; #APP\n" |
---|
989 | |
---|
990 | /* Output to assembler file text saying following lines |
---|
991 | no longer contain unusual constructs. */ |
---|
992 | |
---|
993 | #define ASM_APP_OFF "; #NO_APP\n" |
---|
994 | |
---|
995 | #define FILE_ASM_OP "\t.file\n" |
---|
996 | #define IDENT_ASM_OP "\t.ident\n" |
---|
997 | |
---|
998 | /* The assembler op to get a word, 2 bytes for the H8/300, 4 for H8/300H. */ |
---|
999 | #define ASM_WORD_OP (TARGET_H8300 ? ".word" : ".long") |
---|
1000 | |
---|
1001 | /* Output before read-only data. */ |
---|
1002 | |
---|
1003 | #define TEXT_SECTION_ASM_OP "\t.section .text" |
---|
1004 | #define DATA_SECTION_ASM_OP "\t.section .data" |
---|
1005 | #define BSS_SECTION_ASM_OP "\t.section .bss" |
---|
1006 | #define INIT_SECTION_ASM_OP "\t.section .init" |
---|
1007 | #define CTORS_SECTION_ASM_OP "\t.section .ctors" |
---|
1008 | #define DTORS_SECTION_ASM_OP "\t.section .dtors" |
---|
1009 | |
---|
1010 | #define EXTRA_SECTIONS in_ctors, in_dtors |
---|
1011 | |
---|
1012 | #define EXTRA_SECTION_FUNCTIONS \ |
---|
1013 | \ |
---|
1014 | void \ |
---|
1015 | ctors_section() \ |
---|
1016 | { \ |
---|
1017 | if (in_section != in_ctors) \ |
---|
1018 | { \ |
---|
1019 | fprintf (asm_out_file, "%s\n", CTORS_SECTION_ASM_OP); \ |
---|
1020 | in_section = in_ctors; \ |
---|
1021 | } \ |
---|
1022 | } \ |
---|
1023 | \ |
---|
1024 | void \ |
---|
1025 | dtors_section() \ |
---|
1026 | { \ |
---|
1027 | if (in_section != in_dtors) \ |
---|
1028 | { \ |
---|
1029 | fprintf (asm_out_file, "%s\n", DTORS_SECTION_ASM_OP); \ |
---|
1030 | in_section = in_dtors; \ |
---|
1031 | } \ |
---|
1032 | } \ |
---|
1033 | |
---|
1034 | #define ASM_OUTPUT_CONSTRUCTOR(FILE,NAME) \ |
---|
1035 | do { ctors_section(); \ |
---|
1036 | fprintf(FILE, "\t%s\t_%s\n", ASM_WORD_OP, NAME); } while (0) |
---|
1037 | |
---|
1038 | #define ASM_OUTPUT_DESTRUCTOR(FILE,NAME) \ |
---|
1039 | do { dtors_section(); \ |
---|
1040 | fprintf(FILE, "\t%s\t_%s\n", ASM_WORD_OP, NAME); } while (0) |
---|
1041 | |
---|
1042 | #undef DO_GLOBAL_CTORS_BODY |
---|
1043 | #define DO_GLOBAL_CTORS_BODY \ |
---|
1044 | { \ |
---|
1045 | typedef (*pfunc)(); \ |
---|
1046 | extern pfunc __ctors[]; \ |
---|
1047 | extern pfunc __ctors_end[]; \ |
---|
1048 | pfunc *p; \ |
---|
1049 | for (p = __ctors_end; p > __ctors; ) \ |
---|
1050 | { \ |
---|
1051 | (*--p)(); \ |
---|
1052 | } \ |
---|
1053 | } |
---|
1054 | |
---|
1055 | #undef DO_GLOBAL_DTORS_BODY |
---|
1056 | #define DO_GLOBAL_DTORS_BODY \ |
---|
1057 | { \ |
---|
1058 | typedef (*pfunc)(); \ |
---|
1059 | extern pfunc __dtors[]; \ |
---|
1060 | extern pfunc __dtors_end[]; \ |
---|
1061 | pfunc *p; \ |
---|
1062 | for (p = __dtors; p < __dtors_end; p++) \ |
---|
1063 | { \ |
---|
1064 | (*p)(); \ |
---|
1065 | } \ |
---|
1066 | } |
---|
1067 | |
---|
1068 | /* How to refer to registers in assembler output. |
---|
1069 | This sequence is indexed by compiler's hard-register-number (see above). */ |
---|
1070 | |
---|
1071 | #define REGISTER_NAMES \ |
---|
1072 | { "r0", "r1", "r2", "r3", "r4", "r5", "r6", "sp", "ap"} |
---|
1073 | |
---|
1074 | #define ADDITIONAL_REGISTER_NAMES { { "r7", 7 } } |
---|
1075 | |
---|
1076 | /* How to renumber registers for dbx and gdb. |
---|
1077 | H8/300 needs no change in the numeration. */ |
---|
1078 | |
---|
1079 | #define DBX_REGISTER_NUMBER(REGNO) (REGNO) |
---|
1080 | |
---|
1081 | #define SDB_DEBUGGING_INFO |
---|
1082 | #define SDB_DELIM "\n" |
---|
1083 | |
---|
1084 | /* Output DBX (stabs) debugging information if doing -gstabs. */ |
---|
1085 | |
---|
1086 | #define DBX_DEBUGGING_INFO |
---|
1087 | |
---|
1088 | /* Generate SDB debugging information by default. */ |
---|
1089 | |
---|
1090 | #define PREFERRED_DEBUGGING_TYPE SDB_DEBUG |
---|
1091 | |
---|
1092 | /* A C statement to output something to the assembler file to switch to section |
---|
1093 | NAME for object DECL which is either a FUNCTION_DECL, a VAR_DECL or |
---|
1094 | NULL_TREE. Some target formats do not support arbitrary sections. Do not |
---|
1095 | define this macro in such cases. */ |
---|
1096 | |
---|
1097 | #define ASM_OUTPUT_SECTION_NAME(FILE, DECL, NAME) \ |
---|
1098 | fprintf (FILE, "\t.section %s\n", NAME) |
---|
1099 | |
---|
1100 | /* This is how to output the definition of a user-level label named NAME, |
---|
1101 | such as the label on a static function or variable NAME. */ |
---|
1102 | |
---|
1103 | #define ASM_OUTPUT_LABEL(FILE, NAME) \ |
---|
1104 | do { assemble_name (FILE, NAME); fputs (":\n", FILE); } while (0) |
---|
1105 | |
---|
1106 | #define ASM_OUTPUT_EXTERNAL(FILE, DECL, NAME) |
---|
1107 | |
---|
1108 | /* This is how to output a command to make the user-level label named NAME |
---|
1109 | defined for reference from other files. */ |
---|
1110 | |
---|
1111 | #define ASM_GLOBALIZE_LABEL(FILE, NAME) \ |
---|
1112 | do { fputs ("\t.global ", FILE); assemble_name (FILE, NAME); fputs ("\n", FILE);} while (0) |
---|
1113 | |
---|
1114 | #define ASM_DECLARE_FUNCTION_NAME(FILE, NAME, DECL) \ |
---|
1115 | ASM_OUTPUT_LABEL(FILE, NAME) |
---|
1116 | |
---|
1117 | /* This is how to output a reference to a user-level label named NAME. |
---|
1118 | `assemble_name' uses this. */ |
---|
1119 | |
---|
1120 | #define ASM_OUTPUT_LABELREF(FILE, NAME) \ |
---|
1121 | fprintf (FILE, "_%s", NAME) |
---|
1122 | |
---|
1123 | /* This is how to output an internal numbered label where |
---|
1124 | PREFIX is the class of label and NUM is the number within the class. */ |
---|
1125 | |
---|
1126 | #define ASM_OUTPUT_INTERNAL_LABEL(FILE, PREFIX, NUM) \ |
---|
1127 | fprintf (FILE, ".%s%d:\n", PREFIX, NUM) |
---|
1128 | |
---|
1129 | /* This is how to store into the string LABEL |
---|
1130 | the symbol_ref name of an internal numbered label where |
---|
1131 | PREFIX is the class of label and NUM is the number within the class. |
---|
1132 | This is suitable for output with `assemble_name'. */ |
---|
1133 | |
---|
1134 | #define ASM_GENERATE_INTERNAL_LABEL(LABEL, PREFIX, NUM) \ |
---|
1135 | sprintf (LABEL, "*.%s%d", PREFIX, NUM) |
---|
1136 | |
---|
1137 | /* This is how to output an assembler line defining a `double' constant. |
---|
1138 | It is .dfloat or .gfloat, depending. */ |
---|
1139 | |
---|
1140 | #define ASM_OUTPUT_DOUBLE(FILE, VALUE) \ |
---|
1141 | do { char dstr[30]; \ |
---|
1142 | REAL_VALUE_TO_DECIMAL ((VALUE), "%.20e", dstr); \ |
---|
1143 | fprintf (FILE, "\t.double %s\n", dstr); \ |
---|
1144 | } while (0) |
---|
1145 | |
---|
1146 | |
---|
1147 | /* This is how to output an assembler line defining a `float' constant. */ |
---|
1148 | #define ASM_OUTPUT_FLOAT(FILE, VALUE) \ |
---|
1149 | do { char dstr[30]; \ |
---|
1150 | REAL_VALUE_TO_DECIMAL ((VALUE), "%.20e", dstr); \ |
---|
1151 | fprintf (FILE, "\t.float %s\n", dstr); \ |
---|
1152 | } while (0) |
---|
1153 | |
---|
1154 | /* This is how to output an assembler line defining an `int' constant. */ |
---|
1155 | |
---|
1156 | #define ASM_OUTPUT_INT(FILE, VALUE) \ |
---|
1157 | ( fprintf (FILE, "\t.long "), \ |
---|
1158 | output_addr_const (FILE, (VALUE)), \ |
---|
1159 | fprintf (FILE, "\n")) |
---|
1160 | |
---|
1161 | /* Likewise for `char' and `short' constants. */ |
---|
1162 | |
---|
1163 | #define ASM_OUTPUT_SHORT(FILE, VALUE) \ |
---|
1164 | ( fprintf (FILE, "\t.word "), \ |
---|
1165 | output_addr_const (FILE, (VALUE)), \ |
---|
1166 | fprintf (FILE, "\n")) |
---|
1167 | |
---|
1168 | #define ASM_OUTPUT_CHAR(FILE, VALUE) \ |
---|
1169 | ( fprintf (FILE, "\t.byte "), \ |
---|
1170 | output_addr_const (FILE, (VALUE)), \ |
---|
1171 | fprintf (FILE, "\n")) |
---|
1172 | |
---|
1173 | /* This is how to output an assembler line for a numeric constant byte. */ |
---|
1174 | #define ASM_OUTPUT_BYTE(FILE, VALUE) \ |
---|
1175 | fprintf (FILE, "\t.byte 0x%x\n", (VALUE)) |
---|
1176 | |
---|
1177 | /* This is how to output an insn to push a register on the stack. |
---|
1178 | It need not be very fast code. */ |
---|
1179 | |
---|
1180 | #define ASM_OUTPUT_REG_PUSH(FILE, REGNO) \ |
---|
1181 | fprintf (FILE, "\t%s\t%s\n", h8_push_op, h8_reg_names[REGNO]) |
---|
1182 | |
---|
1183 | /* This is how to output an insn to pop a register from the stack. |
---|
1184 | It need not be very fast code. */ |
---|
1185 | |
---|
1186 | #define ASM_OUTPUT_REG_POP(FILE,REGNO) \ |
---|
1187 | fprintf (FILE, "\t%s\t%s\n", h8_pop_op, h8_reg_names[REGNO]) |
---|
1188 | |
---|
1189 | /* This is how to output an element of a case-vector that is absolute. */ |
---|
1190 | |
---|
1191 | #define ASM_OUTPUT_ADDR_VEC_ELT(FILE, VALUE) \ |
---|
1192 | asm_fprintf (FILE, "\t%s .L%d\n", ASM_WORD_OP, VALUE) |
---|
1193 | |
---|
1194 | /* This is how to output an element of a case-vector that is relative. */ |
---|
1195 | |
---|
1196 | #define ASM_OUTPUT_ADDR_DIFF_ELT(FILE, VALUE, REL) \ |
---|
1197 | fprintf (FILE, "\t%s .L%d-.L%d\n", ASM_WORD_OP, VALUE, REL) |
---|
1198 | |
---|
1199 | /* This is how to output an assembler line |
---|
1200 | that says to advance the location counter |
---|
1201 | to a multiple of 2**LOG bytes. */ |
---|
1202 | |
---|
1203 | #define ASM_OUTPUT_ALIGN(FILE,LOG) \ |
---|
1204 | if ((LOG) != 0) \ |
---|
1205 | fprintf (FILE, "\t.align %d\n", (LOG)) |
---|
1206 | |
---|
1207 | /* This is how to output an assembler line |
---|
1208 | that says to advance the location counter by SIZE bytes. */ |
---|
1209 | |
---|
1210 | #define ASM_OUTPUT_IDENT(FILE, NAME) \ |
---|
1211 | fprintf(FILE, "%s\t \"%s\"\n", IDENT_ASM_OP, NAME) |
---|
1212 | |
---|
1213 | #define ASM_OUTPUT_SKIP(FILE, SIZE) \ |
---|
1214 | fprintf (FILE, "\t.space %d\n", (SIZE)) |
---|
1215 | |
---|
1216 | /* This says how to output an assembler line |
---|
1217 | to define a global common symbol. */ |
---|
1218 | |
---|
1219 | #define ASM_OUTPUT_COMMON(FILE, NAME, SIZE, ROUNDED) \ |
---|
1220 | ( fputs ("\t.comm ", (FILE)), \ |
---|
1221 | assemble_name ((FILE), (NAME)), \ |
---|
1222 | fprintf ((FILE), ",%d\n", (SIZE))) |
---|
1223 | |
---|
1224 | /* This says how to output an assembler line |
---|
1225 | to define a local common symbol. */ |
---|
1226 | |
---|
1227 | #define ASM_OUTPUT_LOCAL(FILE, NAME, SIZE,ROUNDED) \ |
---|
1228 | ( fputs ("\t.lcomm ", (FILE)), \ |
---|
1229 | assemble_name ((FILE), (NAME)), \ |
---|
1230 | fprintf ((FILE), ",%d\n", (SIZE))) |
---|
1231 | |
---|
1232 | /* Store in OUTPUT a string (made with alloca) containing |
---|
1233 | an assembler-name for a local static variable named NAME. |
---|
1234 | LABELNO is an integer which is different for each call. */ |
---|
1235 | |
---|
1236 | #define ASM_FORMAT_PRIVATE_NAME(OUTPUT, NAME, LABELNO) \ |
---|
1237 | ( (OUTPUT) = (char *) alloca (strlen ((NAME)) + 10), \ |
---|
1238 | sprintf ((OUTPUT), "%s___%d", (NAME), (LABELNO))) |
---|
1239 | |
---|
1240 | /* Define the parentheses used to group arithmetic operations |
---|
1241 | in assembler code. */ |
---|
1242 | |
---|
1243 | #define ASM_OPEN_PAREN "(" |
---|
1244 | #define ASM_CLOSE_PAREN ")" |
---|
1245 | |
---|
1246 | /* Define results of standard character escape sequences. */ |
---|
1247 | #define TARGET_BELL 007 |
---|
1248 | #define TARGET_BS 010 |
---|
1249 | #define TARGET_TAB 011 |
---|
1250 | #define TARGET_NEWLINE 012 |
---|
1251 | #define TARGET_VT 013 |
---|
1252 | #define TARGET_FF 014 |
---|
1253 | #define TARGET_CR 015 |
---|
1254 | |
---|
1255 | /* Print an instruction operand X on file FILE. |
---|
1256 | look in h8300.c for details */ |
---|
1257 | |
---|
1258 | #define PRINT_OPERAND_PUNCT_VALID_P(CODE) \ |
---|
1259 | ((CODE) == '#') |
---|
1260 | |
---|
1261 | #define PRINT_OPERAND(FILE, X, CODE) print_operand(FILE,X,CODE) |
---|
1262 | |
---|
1263 | /* Print a memory operand whose address is X, on file FILE. |
---|
1264 | This uses a function in output-vax.c. */ |
---|
1265 | |
---|
1266 | #define PRINT_OPERAND_ADDRESS(FILE, ADDR) print_operand_address (FILE, ADDR) |
---|
1267 | |
---|
1268 | #define HANDLE_PRAGMA(FILE) handle_pragma (FILE) |
---|
1269 | |
---|
1270 | #define FINAL_PRESCAN_INSN(insn, operand, nop) final_prescan_insn (insn, operand,nop) |
---|
1271 | |
---|
1272 | /* Define this macro if GNU CC should generate calls to the System V |
---|
1273 | (and ANSI C) library functions `memcpy' and `memset' rather than |
---|
1274 | the BSD functions `bcopy' and `bzero'. */ |
---|
1275 | |
---|
1276 | #define TARGET_MEM_FUNCTIONS 1 |
---|
1277 | |
---|
1278 | #define MULHI3_LIBCALL "__mulhi3" |
---|
1279 | #define DIVHI3_LIBCALL "__divhi3" |
---|
1280 | #define UDIVHI3_LIBCALL "__udivhi3" |
---|
1281 | #define MODHI3_LIBCALL "__modhi3" |
---|
1282 | #define UMODHI3_LIBCALL "__umodhi3" |
---|
1283 | |
---|
1284 | /* Perform target dependent optabs initialization. */ |
---|
1285 | |
---|
1286 | #define INIT_TARGET_OPTABS \ |
---|
1287 | do { \ |
---|
1288 | smul_optab->handlers[(int) HImode].libfunc \ |
---|
1289 | = gen_rtx (SYMBOL_REF, Pmode, MULHI3_LIBCALL); \ |
---|
1290 | sdiv_optab->handlers[(int) HImode].libfunc \ |
---|
1291 | = gen_rtx (SYMBOL_REF, Pmode, DIVHI3_LIBCALL); \ |
---|
1292 | udiv_optab->handlers[(int) HImode].libfunc \ |
---|
1293 | = gen_rtx (SYMBOL_REF, Pmode, UDIVHI3_LIBCALL); \ |
---|
1294 | smod_optab->handlers[(int) HImode].libfunc \ |
---|
1295 | = gen_rtx (SYMBOL_REF, Pmode, MODHI3_LIBCALL); \ |
---|
1296 | umod_optab->handlers[(int) HImode].libfunc \ |
---|
1297 | = gen_rtx (SYMBOL_REF, Pmode, UMODHI3_LIBCALL); \ |
---|
1298 | } while (0) |
---|
1299 | |
---|
1300 | #define MOVE_RATIO 3 |
---|
1301 | |
---|
1302 | /* Declarations for functions used in insn-output.c. */ |
---|
1303 | char *emit_a_shift (); |
---|
1304 | |
---|
1305 | |
---|