1 /* $NetBSD: gsp_ass.h,v 1.14 2025/11/24 08:04:28 nia Exp $ */ 2 /* 3 * GSP assembler - definitions 4 * 5 * Copyright (c) 1993 Paul Mackerras. 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. The name of the author may not be used to endorse or promote products 17 * derived from this software without specific prior written permission 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 20 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 21 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 22 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 23 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 24 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 28 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 29 */ 30 31 #include <stddef.h> 32 #include <sys/types.h> 33 #include <err.h> 34 35 #define MAXLINE 133 36 37 typedef char bool; 38 #define TRUE 1 39 #define FALSE 0 40 41 #define YYDEBUG 1 42 43 /* Structure for symbol in symbol table */ 44 typedef struct symbol { 45 int16_t flags; 46 int16_t ndefn; 47 unsigned value; 48 unsigned lineno; 49 struct symbol *next; 50 struct numlab *nlab; 51 char name[1]; 52 } *symbol; 53 54 /* Values for flags */ 55 #define DEFINED 1 56 #define SET_LABEL 2 57 #define NUMERIC_LABEL 4 58 59 #define NOT_YET 65535U /* line no. for `not defined yet' */ 60 61 /* Info about successive numeric labels */ 62 struct numlab { 63 unsigned value; 64 unsigned lineno; 65 struct numlab *next; 66 }; 67 68 /* Structure for expressions */ 69 typedef struct expr { 70 int e_op; 71 union { 72 struct { 73 struct expr *left; 74 struct expr *right; 75 } e_s; 76 symbol sym; 77 int32_t val; 78 } e_u; 79 } *expr; 80 #define e_left e_u.e_s.left 81 #define e_right e_u.e_s.right 82 #define e_sym e_u.sym 83 #define e_val e_u.val 84 85 /* Operators other than '+', '-', etc. */ 86 #define SYM 1 87 #define CONST 2 88 #define NEG 3 89 90 /* Structure for an operand */ 91 typedef struct operand { 92 char type; 93 char mode; /* EA mode */ 94 int16_t reg_no; 95 union { 96 expr value; 97 char *string; 98 } op_u; 99 struct operand *next; 100 } *operand; 101 102 /* Values for operand type */ 103 #define REG 1 /* register operand */ 104 #define EXPR 2 /* expression operand */ 105 #define EA 4 /* effective address */ 106 #define STR_OPN 8 /* string operand */ 107 108 /* Addressing modes */ 109 /* NB codes for modes with an expression must be > other modes */ 110 #define M_REG 0 /* R */ 111 #define M_IND 1 /* *R */ 112 #define M_POSTINC 2 /* *R+ */ 113 #define M_PREDEC 3 /* *-R */ 114 #define M_INDXY 4 /* *R.XY (pixt only) */ 115 #define M_INDEX 5 /* *R(n) */ 116 #define M_ABSOLUTE 6 /* @adr */ 117 118 /* Register names */ 119 #define GSPA_A0 0x20 120 #define GSPA_B0 0x50 121 #define GSPA_SP 0x6F /* (r1 & r2 & REGFILE) != 0 iff */ 122 #define GSPA_REGFILE 0x60 /* r1 and r2 are in the same file */ 123 124 /* Prototypes */ 125 operand abs_adr(expr); 126 operand add_operand(operand, operand); 127 expr bexpr(int, expr, expr); 128 void do_asg(char *, expr, int flags); 129 void do_list_pc(void); 130 void do_show_val(int32_t); 131 int eval_expr(expr, int32_t *, unsigned *); 132 operand expr_op(expr); 133 expr fold(expr); 134 void free_expr(expr); 135 void free_operands(operand); 136 int get_line(char *lp, int maxlen); 137 expr here_expr(void); 138 expr id_expr(char *); 139 void lex_init(char *line); 140 void list_error(char *); 141 void listing(void); 142 symbol lookup(char *id, bool makeit); 143 expr num_expr(int); 144 void p1err(const char *fmt, ...) __printflike(1, 2); 145 void perr(const char *fmt, ...) __printflike(1, 2); 146 void pseudo(int code, operand operands); 147 void push_input(char *fn); 148 void putcode(u_int16_t *, int); 149 operand reg_ind(int, int); 150 operand reg_index(int, expr); 151 operand reg_indxy(int, char *); 152 operand reg_op(int reg); 153 void reset_numeric_labels(void); 154 void set_label(char *); 155 void set_numeric_label(int); 156 void start_at(u_int32_t); 157 void statement(char *opcode, operand operands); 158 operand string_op(char *); 159 void ucasify(char *); 160 __dead void yyerror(const char *err); 161 int yylex(void); 162 163 164 extern unsigned pc; 165 extern short pass2; 166 167 extern unsigned lineno; 168 extern int err_count; 169 extern char line[], *lineptr; 170 171 #if defined(sparc) && !defined(__NetBSD__) 172 #include <alloca.h> 173 #else 174 #ifdef __GNUC__ 175 #define alloca __builtin_alloca 176 #endif 177 #endif 178 179 #define new(x) ((x) = emalloc(sizeof(*(x)))) 180
Indexes created Sat Feb 21 16:20:20 UTC 2026