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427 lines
14 KiB
Plaintext
427 lines
14 KiB
Plaintext
1File: INIT.C Page 1
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1 /*
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2 Copyright 1982
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3 Alcyon Corporation
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4 8716 Production Ave.
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5 San Diego, Ca. 92121
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6 */
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7
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8
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9 char null[]=0;
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10 #define SSIZE 8 /* chars per symbol */
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11
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12 /*operator tree node for unary and binary operators*/
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13 struct tnode {
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14 int t_op; /*operator*/
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15 int t_type; /*data type of result*/
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16 int t_su; /*Sethy-Ullman number*/
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17 int t_ssp;
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18 struct tnode *t_left; /*left sub-tree*/
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19 struct tnode *t_right; /*right sub-tree (undefined if unary)*/
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20 };
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21
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22 /*constant terminal node*/
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23 struct conode {
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24 int t_op; /*operator*/
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25 int t_type; /*type*/
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26 int t_su; /*Sethy-Ullman number*/
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27 int t_ssp;
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28 int t_value; /*value or label number*/
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29 };
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30
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31 struct lconode {
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32 int t_op; /*operator*/
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33 int t_type; /*type*/
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34 int t_su; /*Sethy-Ullman number*/
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35 int t_ssp;
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36 long t_lvalue; /*value or label number*/
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37 };
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38
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39 /*local symbol terminal node*/
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40 struct symnode {
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41 int t_op; /*operator*/
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42 int t_type; /*symbol data type*/
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43 int t_su; /*Sethy-Ullman number*/
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44 int t_ssp;
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45 int t_sc; /*storage class*/
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46 int t_offset; /*register offset*/
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47 int t_reg; /*register number*/
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48 int t_label; /*label number if static*/
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49 };
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50
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51 /*external symbol reference node*/
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52 struct extnode {
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53 int t_op; /*operator*/
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54 int t_type; /*symbol data type*/
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55 int t_su; /*Sethy-Ullman number*/
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56 int t_ssp;
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57 int t_sc; /*storage class*/
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58 int t_offset; /*register offset*/
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59 int t_reg; /*register number*/
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1File: INIT.C Page 2
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60 char t_symbol[SSIZE]; /*symbol name*/
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61 };
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62
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63 /*68000 special - indexed symbol node*/
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64 /*this is used to generate a An(off,Xn.type) address*/
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65 struct indexnode {
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66 int t_op;
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67 int t_type;
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68 int t_su;
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69 int t_ssp;
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70 int t_sc;
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71 int t_offset;
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72 int t_reg;
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73 int t_xreg;
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74 int t_xtype;
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75 };
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76
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77 int lflag=0;
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78 int dflag=0;
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79 int mflag=0;
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80 int cflag=0;
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81 int eflag=0;
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82 int fflag=0;
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83 int oflag=0;
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84 int lineno=0;
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85 int naregs=0;
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86 int ndregs=0;
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87 int errcnt=0;
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88 int stacksize=0;
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89
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90 char *tnalloc();
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91 char *snalloc();
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92 char *cenalloc();
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93 char *xnalloc();
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94 char *talloc();
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95 char *cnalloc();
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96 char *lcnalloc();
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97 char *fpcnalloc();
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98 char *canon();
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99 char *commute();
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100 char *constant();
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101 char *match();
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102 char *addptree();
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103 char *fixbfield();
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104 char *coffset();
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105 char *tcopy();
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106
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107 #define wallign(add) ((add+1)&(~1))
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108 #define array(type) ((type&SUPTYP)==ARRAY)
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109 #define function(type) ((type&SUPTYP)==FUNCTION)
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110 #define pointer(type) ((type&SUPTYP)==POINTER)
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111 #define notarray(type) ((type&SUPTYP)!=ARRAY)
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112 #define notfunction(type) ((type&SUPTYP)!=FUNCTION)
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113 #define notpointer(type) ((type&SUPTYP)!=POINTER)
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114 #define isfloat(type) (type==FLOAT)
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115 #define btype(type) (type&TYPE)
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116 #define suptype(type) (type&SUPTYP)
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117 #define alltype(type) (type&(SUPTYP|TYPE))
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118 #define asgop(op) ((opinfo[op]&OPASSIGN)!=0)
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1File: INIT.C Page 3
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119 #define relop(op) ((opinfo[op]&OPREL)!=0)
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120 #define lintegral(op) ((opinfo[op]&OPLWORD)!=0)
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121 #define rintegral(op) ((opinfo[op]&OPRWORD)!=0)
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122 #define rasop(op) ((opinfo[op]&OPRAS)!=0)
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123 #define binop(op) ((opinfo[op]&OPBIN)!=0)
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124 #define unaryop(op) ((opinfo[op]&(OPBIN|OPTERM))==0)
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125 #define leafop(op) ((opinfo[op]&OPTERM)!=0)
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126 #define notleafop(op) ((opinfo[op]&OPTERM)==0)
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127 #define lvalop(op) ((opinfo[op]&OPLVAL)!=0)
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128 #define oppriority(op) (opinfo[op]&OPPRI)
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129 #define commop(op) ((opinfo[op]&OPCOM)!=0)
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130 #define convop(op) ((opinfo[op]&OPCONVS)!=0)
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131 #define notconvop(op) ((opinfo[op]&OPCONVS)==0)
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132 #define max(a,b) (a>b?a:b)
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133 #define min(a,b) (a<b?a:b)
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134
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135 #define QUICKVAL 8
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136 #define LEP 14
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137 #define FORCC 1
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138 #define FOREFF 2
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139 #define FORSTACK 3
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140 #define FORCREG 4
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141 #define FORSP 5
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142 #define FORREG 4
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143 #define HICREG 2
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144 #define NCREGS 3
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145 #define AREGLO 8
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146 #define IMMED 1
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147 #define NOTIMMED 0
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148 #define NOTLOFFSET 0
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149
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150 /* one line routines turned into defines [vlh] for speed */
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151
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152 /*outgoto - output "bra L[labno]"*/
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153 #define outgoto(lab) if (lab>0) printf("bra L%d\n",lab)
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154 /*outlab - output "L[labno]:"*/
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155 #define outlab(lab) if (lab>0) printf("L%d:",lab)
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156
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157 /*outext - output register sign extension*/
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158 #define outext(reg) printf("ext.l R%d\n",reg)
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159 /*outuext - output unsigned to long register extension*/
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160 #define outuext(reg) printf("swap R%d\nclr R%d\nswap R%d\n",reg,reg,reg)
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161 /*outswap - output swap register instruction*/
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162 #define outswap(reg) printf("swap R%d\n",reg)
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163 /*outaddr - output "add [type] R1 R2" instruction*/
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164 #define outaddr(r1,r2,tp) outrr("add",r1,r2,(tp))
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165 /*outccsave - ouput instruction to move cc's to register*/
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166 #define outccsave(reg) printf("move sr,R%d\n",reg)
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167 /*outccrestore - output instruction to restore cc's from register*/
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168 #define outccrestore(reg) printf("move R%d,ccr\n",reg)
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169 /*basetype - get the btype info sans unsigned*/
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170 #define basetype(type) ((type==UNSIGNED) ? INT : type)
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171 #define unsign(type) ((type) == UNSIGNED)
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172 #define longorptr(type) (type==LONG || (type&SUPTYP))
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173 #define unorptr(type) (type==UNSIGNED || (type&SUPTYP))
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174 #define dreg(reg) ((reg) & (~AREGLO))
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175 #define areg(reg) ((reg) | AREGLO)
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176 #define isareg(reg) ((reg) >= AREGLO)
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177 #define isdreg(reg) ((reg) < AREGLO)
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1File: INIT.C Page 4
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178 #define isreg(tp) ((tp)->t_op == SYMBOL && (tp)->t_sc == REGISTER)
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179
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180 /*
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181 * intermediate code operators
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182 * 0=>EOF, special operator
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183 */
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184 #define EOF 0
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185
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186 /*1-59=>operators that generate code (entries in code gen optab)*/
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187 #define ADD 1
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188 #define SUB 2
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189 #define MULT 3
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190 #define DIV 4
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191 #define MOD 5
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192 #define RSH 6
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193 #define LSH 7
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194 #define AND 8
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195 #define OR 9
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196 #define XOR 10
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197 #define NOT 11
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198 #define UMINUS 12
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199 #define COMPL 13
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200 #define PREDEC 14
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201 #define PREINC 15
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202 #define POSTDEC 16
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203 #define POSTINC 17
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204 #define ASSIGN 18
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205 #define EQADD 19
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206 #define EQSUB 20
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207 #define EQMULT 21
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208 #define EQDIV 22
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209 #define EQMOD 23
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210 #define EQRSH 24
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211 #define EQLSH 25
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212 #define EQAND 26
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213 #define EQOR 27
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214 #define EQXOR 28
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215 #define FJSR 29
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216 #define EQUALS 30
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217 #define NEQUALS 31
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218 #define GREAT 32
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219 #define GREATEQ 33
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220 #define LESS 34
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221 #define LESSEQ 35
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222 #define INT2L 36
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223 #define LONG2I 37
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224
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225 /*machine dependent operators that generate code*/
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226 #define BTST 38
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227 #define LOAD 39
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228 #define LMULT 40
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229 #define LDIV 41
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230 #define LMOD 42
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231 #define LEQMULT 43
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232 #define LEQDIV 44
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233 #define LEQMOD 45
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234 #define EQADDR 46
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235 #define EQNOT 47
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236 #define EQNEG 48
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1File: INIT.C Page 5
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237 #define DOCAST 49
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238
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239 #define STASSIGN 50 /*[vlh]*/
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240 #define LONG2F 51 /*[vlh] 3.4*/
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241 #define FLOAT2L 52 /*[vlh] 3.4*/
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242 #define INT2F 53 /*[vlh] 3.4*/
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243 #define FLOAT2I 54 /*[vlh] 3.4*/
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244 #define LCGENOP 55 /*change if adding more operators...*/
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245
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246 /*intermediate code operators that do not generate code*/
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247 #define ADDR 60
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248 #define INDR 61
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249 #define LAND 62
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250 #define LOR 63
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251 #define QMARK 64
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252 #define COLON 65
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253 #define COMMA 66
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254 #define CINT 67
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255 #define CLONG 68
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256 #define SYMBOL 69
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257 #define AUTOINC 70
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258 #define AUTODEC 71
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259 #define CALL 72
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260 #define NACALL 73
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261 #define BFIELD 74
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262 #define IFGOTO 75
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263 #define INIT 76
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264 #define CFORREG 77
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265 #define DCLONG 78
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266 #define CFLOAT 79 /*[vlh] 3.4*/
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267
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268 /*operators local to parser*/
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269 #define CAST 80
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270 #define SEMI 81
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271 #define LCURBR 82
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272 #define RCURBR 83
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273 #define LBRACK 84
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274 #define RBRACK 85
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275 #define LPAREN 86
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276 #define RPAREN 87
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277 #define STRING 88
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278 #define RESWORD 89
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279 #define APTR 90
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280 #define PERIOD 91
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281 #define SIZEOF 92
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282 #define MPARENS 93
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283 #define FRETURN 94
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284 #define STACKEND 100
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285
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286 /*data types*/
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287 #define TYPELESS 0
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288 #define CHAR 1
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289 #define SHORT 2
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290 #define INT 3
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291 #define LONG 4
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292 #define UCHAR 5
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293 #define USHORT 6
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294 #define UNSIGNED 7
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295 #define ULONG 8
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1File: INIT.C Page 6
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296 #define FLOAT 9
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297 #define DOUBLE 10
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298
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299 /*data types local to parser*/
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300 #define STRUCT 11
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301 #define FRSTRUCT 12
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302 #define LLABEL 13
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303
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304 /*type flags and definitions*/
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305 #define TYPE 017
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306 #define SUPTYP 060
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307 #define ALLTYPE 077
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308 #define POINTER 020
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309 #define FUNCTION 040
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310 #define ARRAY 060
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311 #define SUTYPLEN 2
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312
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313 /*data registers*/
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314 #define DREG0 0
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315 #define DREG2 2
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316 #define DREG3 3
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317 #define DREG4 4
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318 #define DREG5 5
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319 #define DREG6 6
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320 #define DREG7 7
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321 #define AREG3 11
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322 #define AREG4 12
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323 #define AREG5 13
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324
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325 /*storage classes*/
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326 #define AUTO 1
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327 #define REGISTER 2
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328 #define EXTERNAL 3
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329 #define STATIC 4
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330 #define REGOFF 5
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331 #define EXTOFF 6
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332 #define STATOFF 7
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333 #define INDEXED 8
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334
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335 /*exclusively code generator storage classes*/
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336 #define CINDR 9
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337 #define CLINDR 10
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338 #define CFINDR 11 /* [vlh] 3.4 */
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339
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340 /*exclusively parser storage classes*/
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341 #define STRPROTO 9
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342 #define PDECLIST 10
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343 #define PARMLIST 11
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344 #define BFIELDCL 12
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345 #define UNELCL 13
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346 #define STELCL 14
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347
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348
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349 /*opinfo table bits*/
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350 #define OPPRI 077
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351 #define OPBIN 0100
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352 #define OPLVAL 0200
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353 #define OPREL 0400
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354 #define OPASSIGN 01000
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1File: INIT.C Page 7
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355 #define OPLWORD 02000
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356 #define OPRWORD 04000
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357 #define OPCOM 010000
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358 #define OPRAS 020000
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359 #define OPTERM 040000
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360 #define OPCONVS 0100000
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361
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362 /*68000 definitions*/
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363 #define PTRSIZE 4
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364 #define INTSIZE 2
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365 #define LONGSIZE 4
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366 #define TRUE 1
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367 #define FALSE 0
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368 #define TABC '\t' /* tab character */
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369 #define EOLC '\n' /* end of line character */
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370 #define BITSPBYTE 8
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371
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372 /*operator class priorities*/
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373 #define TRMPRI 0 /* terminal nodes */
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374 #define RPNPRI 1 /* ) and ] */
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375 #define CALPRI 2 /* in-stack call, ( or [ */
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376 #define COLPRI 3 /* init or case priority for : or , */
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377 #define STKPRI 4 /* priority of end of stack */
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378 #define COMPRI 5 /* normal priority for , */
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379 #define ASGPRI 6 /* =, +=, -=, *=, /=, %=, ... */
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380 #define QMKPRI 7 /* ?: */
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381 #define LORPRI 8 /* || */
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382 #define LNDPRI 9 /* && */
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383 #define ORPRI 10 /* |, ! */
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384 #define ANDPRI 11 /* & */
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385 #define EQLPRI 12 /* ==, != */
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386 #define RELPRI 13 /* >, <, >=, <= */
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387 #define SHFPRI 14 /* <<, >> */
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388 #define ADDPRI 15 /* +, - */
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389 #define MULPRI 16 /* *, /, % */
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390 #define UNOPRI 17 /* ++, --, &, *, -, ~, sizeof */
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391 #define LPNPRI 18 /* ., ->, [, (, function call */
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392 #define PSTPRI 19 /* in-stack post--, post++ */
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393
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394 struct io_buf {
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395 int io_fd;
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396 int io_nc;
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397 char *io_p;
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398 char io_b[512];
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399 };
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400 struct { int hiword; int loword; };
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401 #define EXPSIZE 1024
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402 int exprarea[EXPSIZE]=0;
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403
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404 /* v6io buffer declaration */
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405 #define BLEN 512
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406
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407 struct iobuf {
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408 int fildes;
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409 int nunused;
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410 char *xfree;
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411 char buff[BLEN];
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412 };
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413 struct io_buf ibuf={0}, obuf={0};
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1File: INIT.C Page 8
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414 int bol=0;
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415 int errflg=0;
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416 int level=0;
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417 int onepass=0;
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418 char *opap=0;
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