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annotate src/lwasm.h @ 49:21ae0fab469b

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Added needed infra for useful listing of EQU and ORG type statements
author lost
date Sun, 04 Jan 2009 07:37:19 +0000
parents b962cee20bf4
children 360d53062bb9
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1 /*
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2 lwasm.h
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3 Copyright © 2008 William Astle
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4
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5 This file is part of LWASM.
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6
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7 LWASM is free software: you can redistribute it and/or modify it under the
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8 terms of the GNU General Public License as published by the Free Software
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9 Foundation, either version 3 of the License, or (at your option) any later
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10 version.
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11
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12 This program is distributed in the hope that it will be useful, but WITHOUT
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13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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15 more details.
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16
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17 You should have received a copy of the GNU General Public License along with
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18 this program. If not, see <http://www.gnu.org/licenses/>.
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19
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20 Contains the main defs used by the assembler
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21 */
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24 #ifndef __lwasm_h_seen__
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25 #define __lwasm_h_seen__
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26
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27 #include "expr.h"
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28
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29 #define OUTPUT_DECB 0 // DECB multirecord format
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30 #define OUTPUT_RAW 1 // raw sequence of bytes
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31 #define OUTPUT_OBJ 2 // proprietary object file format
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32 #define OUTPUT_RAWREL 3 // raw bytes where ORG causes a SEEK in the file
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33
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34 // structure for tracking errors
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35 typedef struct lwasm_error_s lwasm_error_t;
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36 struct lwasm_error_s
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37 {
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38 char *mess; // the actual error message
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39 lwasm_error_t *next; // ptr to next error
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40 };
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41
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42 // structure for keeping track of lines
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43 typedef struct lwasm_line_s lwasm_line_t;
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44 struct lwasm_line_s {
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45 char *text; // the actual text of the line
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46 int lineno; // line number within the file
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47 char *filename; // file name reference
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48 lwasm_line_t *next; // next line
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49 lwasm_line_t *prev; // previous line
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50 lwasm_error_t *err; // error messages
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51 int fsize; // forced size (0 = no forced size)
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52 char *sym; // scratch area to record the presence of a symbol
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53 unsigned char *bytes; // actual bytes emitted
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54 int codelen; // number of bytes emitted
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55 int codesize; // the size of the code buffer
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56 int codeaddr; // address the code goes at
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57 int nocodelen; // for "RMB" type instructions
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58 int addrset; // set if this instruction sets the assembly address
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59 int symaddr; // set if this instruction sets a symbol addr with EQU or the like
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60 };
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61
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62 // for keeping track of symbols
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63 typedef struct lwasm_symbol_ent_s lwasm_symbol_ent_t;
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64 struct lwasm_symbol_ent_s
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65 {
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66 char *sym; // the symbol
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67 int context; // the context number of the symbol (-1 for global)
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68 int value; // the value of the symbol
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69 lwasm_symbol_ent_t *next; // next symbol in the table
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70 lwasm_symbol_ent_t *prev; // previous symbol in the table
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71 };
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72
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73 // keep track of current assembler state
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74 typedef struct {
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75 int dpval; // current dp value (setdp)
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76 int addr; // current address
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77 int context; // context counter (for local symbols)
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78 int errorcount; // error count
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79 int passnum; // which pass are we on?
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80 int execaddr; // execution address for the program (END ....)
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81 int pragmas; // what pragmas are in effect?
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82
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83 lwasm_line_t *lineshead; // first line of source code
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84 lwasm_line_t *linestail; // last line of source code
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86 lwasm_symbol_ent_t *symhead; // first entry in symbol table
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87 lwasm_symbol_ent_t *symtail; // last entry in symbol table
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88
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89 const char *infile; // input file
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90 const char *outfile; // output file
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91 const char *listfile; // output listing file
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92 int outformat; // output format type
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93 char **filelist; // files that have been read
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94 int filelistlen; // number of files in the list
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95 } asmstate_t;
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96
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97 #define PRAGMA_NOINDEX0TONONE 1
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98
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99 #ifndef __lwasm_c_seen__
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100 #define __lwasm_E__ extern
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101 #else
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102 #define __lwasm_E__
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103 #endif
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104
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105 __lwasm_E__ int debug_level;
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106
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107 __lwasm_E__ int register_error(asmstate_t *as, lwasm_line_t *l, int pass, const char *fmt, ...);
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108 __lwasm_E__ void debug_message(int level, const char *fmt, ...);
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109
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110 __lwasm_E__ void lwasm_emit(asmstate_t *as, lwasm_line_t *l, int b);
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111 __lwasm_E__ void lwasm_emitop(asmstate_t *as, lwasm_line_t *l, int o);
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112 __lwasm_E__ int lwasm_lookupreg2(const char *reglist, char **str);
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113 __lwasm_E__ int lwasm_lookupreg3(const char *rlist, const char **str);
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114
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115 __lwasm_E__ lwasm_expr_stack_t *lwasm_evaluate_expr(asmstate_t *as, lwasm_line_t *l, const char *inp, const char **outp);
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116
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117 #undef __lwasm_E__
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118
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119
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120 #ifndef __symbol_c_seen__
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121 #define __lwasm_E__ extern
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122 #else
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123 #define __lwasm_E__
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124 #endif
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125
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126 __lwasm_E__ int lwasm_register_symbol(asmstate_t *as, lwasm_line_t *l, char *sym, int val);
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127 __lwasm_E__ lwasm_symbol_ent_t *lwasm_find_symbol(asmstate_t *as, char *sym, int scontext);
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128 __lwasm_E__ int lwasm_set_symbol(asmstate_t *as, char *sym, int scontext, int val);
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129
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130 #undef __lwasm_E__
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134 #endif //__lwasm_h_seen__