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annotate lwasm/lwasm.h @ 283:210d261a614d

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Make byte overflow detection for indexing work better There are *two* places where indexed addressing is calculated - lea style instructions and general addressing instructions. Actually check for byte overflows in both places. Also, extend byte overflow checking to all 8 bit offsets from index registers, not just PCR.
author William Astle <lost@l-w.ca>
date Mon, 02 Sep 2013 10:49:57 -0600
parents d0e9dbe9afbe
children d4ac484d0ec6
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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1 /*
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2 lwasm.h
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3
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4 Copyright © 2010 William Astle
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5
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6 This file is part of LWTOOLS.
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7
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8 LWTOOLS is free software: you can redistribute it and/or modify it under the
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9 terms of the GNU General Public License as published by the Free Software
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10 Foundation, either version 3 of the License, or (at your option) any later
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11 version.
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12
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13 This program is distributed in the hope that it will be useful, but WITHOUT
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14 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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15 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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16 more details.
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17
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18 You should have received a copy of the GNU General Public License along with
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19 this program. If not, see <http://www.gnu.org/licenses/>.
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20 */
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21
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22 #ifndef ___lwasm_h_seen___
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23 #define ___lwasm_h_seen___
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24
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25 #include <lw_expr.h>
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26 #include <lw_stringlist.h>
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27 #include <lw_stack.h>
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30 // these are allowed chars BELOW 0x80 for symbols
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31 // first is symbol start chars, second is anywhere in symbol
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32 #define SSYMCHARS "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz_@$"
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33 #define SYMCHARS SSYMCHARS ".?0123456789"
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34
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35 typedef struct asmstate_s asmstate_t;
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36
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37 enum
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38 {
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39 lwasm_expr_linelen = 1, // length of ref'd line
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40 lwasm_expr_lineaddr = 2, // addr of ref'd line
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41 lwasm_expr_nextbp = 3, // next branch point
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42 lwasm_expr_prevbp = 4, // previous branch point
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43 lwasm_expr_syment = 5, // symbol table entry
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44 lwasm_expr_import = 6, // symbol import entry
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45 lwasm_expr_secbase = 7, // section base address
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46 lwasm_expr_linedaddr = 8, // data address of the line
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47 lwasm_expr_linedlen = 9 // data length of the line
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48 };
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49
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50 enum lwasm_output_e
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51 {
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52 OUTPUT_DECB = 0, // DECB multirecord format
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53 OUTPUT_RAW, // raw sequence of bytes
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54 OUTPUT_OBJ, // proprietary object file format
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55 OUTPUT_RAWREL, // raw bytes where ORG causes a SEEK in the file
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56 OUTPUT_OS9 // os9 module target
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57 };
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58
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59 enum lwasm_target_e
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60 {
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61 TARGET_6309 = 0, // target 6309 CPU
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62 TARGET_6809 // target 6809 CPU (no 6309 ops)
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63 };
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64
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65 enum lwasm_flags_e
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66 {
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67 FLAG_LIST = 0x0001,
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68 FLAG_DEPEND = 0x0002,
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69 FLAG_SYMBOLS = 0x004,
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70 FLAG_DEPENDNOERR = 0x0008,
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71 FLAG_UNICORNS = 0x0010,
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72 FLAG_NONE = 0
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73 };
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74
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75 enum lwasm_pragmas_e
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76 {
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77 PRAGMA_NONE = 0, // no pragmas in effect
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78 PRAGMA_DOLLARNOTLOCAL = 0x0001, // dollar sign does not make a symbol local
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79 PRAGMA_NOINDEX0TONONE = 0x0002, // do not change implicit 0,R to ,R
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80 PRAGMA_UNDEFEXTERN = 0x0004, // undefined symbols are considered to be external
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81 PRAGMA_CESCAPES = 0x0008, // allow C style escapes in fcc, fcs, fcn, etc.
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82 PRAGMA_IMPORTUNDEFEXPORT = 0x0010, // imports symbol if undefined upon export
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83 PRAGMA_PCASPCR = 0x0020, // treats ,PC as ,PCR instead of constant offset
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84 PRAGMA_SHADOW = 0x0040, // allow macros to shadow builtin operations
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85 PRAGMA_NOLIST = 0x0080, // don't show line in listing
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86 PRAGMA_AUTOBRANCHLENGTH = 0x0100, // automatically select proper length for relative branches
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87 PRAGMA_EXPORT = 0x0200, // export symbols by default, unless local
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88 PRAGMA_SYMBOLNOCASE = 0x400, // symbols defined under this pragma are matched case insensitively
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89 PRAGMA_CONDUNDEFZERO = 0x800 // treat undefined symbols as zero in conditionals during pass 1
0
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90 };
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91
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92
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93 enum
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94 {
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95 section_flag_bss = 1, // BSS section
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96 section_flag_constant = 2, // constants - no base offset
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97 section_flag_none = 0 // no flags
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98 };
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99
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100 typedef struct reloctab_s reloctab_t;
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101 struct reloctab_s
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102 {
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103 lw_expr_t offset; // offset of relocation
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104 int size; // size of relocation
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105 lw_expr_t expr; // relocation expression
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106 reloctab_t *next;
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107 };
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108
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109 typedef struct sectiontab_s sectiontab_t;
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110 struct sectiontab_s
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111 {
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112 char *name; // section name
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113 int flags; // section flags;
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114 lw_expr_t offset; // offset for next instance
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115 int oblen; // size of section output
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116 int obsize; // size of output buffer
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117 unsigned char *obytes; // output buffer
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118 reloctab_t *reloctab; // table of relocations
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119 sectiontab_t *next;
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120 };
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121
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122 typedef struct lwasm_error_s lwasm_error_t;
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123 struct lwasm_error_s
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124 {
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125 char *mess; // actual error message
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126 int charpos; // character position on line where parsing stopped
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127 lwasm_error_t *next; // ptr to next error
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128 };
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129
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130 struct line_expr_s
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131 {
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132 lw_expr_t expr;
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133 int id;
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134 struct line_expr_s *next;
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135 };
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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136
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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137 typedef struct line_s line_t;
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138
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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139 typedef struct exportlist_s exportlist_t;
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140 struct exportlist_s
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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141 {
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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142 char *symbol; // symbol to export
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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143 struct symtabe *se; // symbol table entry
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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144 line_t *line; // line the export is on
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145 exportlist_t *next; // next in the export list
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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146 };
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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147
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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148 typedef struct importlist_s importlist_t;
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149 struct importlist_s
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150 {
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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151 char *symbol; // symbol to import
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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152 importlist_t *next; // next in the import list
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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153 };
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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154
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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155 struct line_s
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156 {
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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157 lw_expr_t addr; // assembly address of the line
142
697bc543368c Implement distinction between . and * for OS9 modules
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diff changeset
158 lw_expr_t daddr; // data address of the line (os9 only)
0
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159 int len; // the "size" this line occupies (address space wise) (-1 if unknown)
142
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160 int dlen; // the data "size" this line occupies (-1 if unknown)
241
d0e9dbe9afbe Add new heuristic for resolving instruction sizes.
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161 int minlen; // minimum length
d0e9dbe9afbe Add new heuristic for resolving instruction sizes.
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162 int maxlen; // maximum length
0
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163 int insn; // number of insn in insn table
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164 int symset; // set if the line symbol was consumed by the instruction
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165 char *sym; // symbol, if any, on the line
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166 unsigned char *output; // output bytes
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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167 int outputl; // size of output
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168 int outputbl; // size of output buffer
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169 int dpval; // direct page value
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170 lwasm_error_t *err; // list of errors
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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171 lwasm_error_t *warn; // list of errors
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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172 line_t *prev; // previous line
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173 line_t *next; // next line
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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174 int inmod; // inside a module?
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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175 sectiontab_t *csect; // which section are we in?
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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176 struct line_expr_s *exprs; // expressions used during parsing
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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177 char *lstr; // string passed forward
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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178 int pb; // pass forward post byte
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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179 int lint; // pass forward integer
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180 int lint2; // another pass forward integer
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181 asmstate_t *as; // assembler state data ptr
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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182 int pragmas; // pragmas in effect for the line
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183 int context; // the symbol context number
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184 char *ltext; // line number
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185 char *linespec; // line spec
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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186 int lineno; // line number
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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187 int soff; // struct offset (for listings)
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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188 int dshow; // data value to show (for listings)
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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189 int dsize; // set to 1 for 8 bit dshow value
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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190 int isbrpt; // set to 1 if this line is a branch point
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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191 struct symtabe *dptr; // symbol value to display
49
bd8b3fbd1e28 Added ability to flag macros as "noexpand" so they are not expanded in the listing
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192
bd8b3fbd1e28 Added ability to flag macros as "noexpand" so they are not expanded in the listing
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193 int noexpand_start; // start of a no-expand block
bd8b3fbd1e28 Added ability to flag macros as "noexpand" so they are not expanded in the listing
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194 int noexpand_end; // end of a no-expand block
219
afd50d6b4113 Add --preprocess option
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parents: 211
diff changeset
195 int hideline; // set if we're going to hide this line on output
0
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196 };
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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197
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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198 enum
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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199 {
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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200 symbol_flag_set = 1, // symbol was used with "set"
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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201 symbol_flag_nocheck = 2, // do not check symbol characters
81
428068681cbf Added nolist pragma to suppress listing output of non-code generating lines
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diff changeset
202 symbol_flag_nolist = 4, // no not show symbol in symbol table
207
07e1fac76321 Added pragma to allow non case sensitive symbols
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parents: 206
diff changeset
203 symbol_flag_nocase = 8, // do not match case of symbol
0
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204 symbol_flag_none = 0 // no flags
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205 };
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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206
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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207 struct symtabe
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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208 {
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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209 char *symbol; // the name of the symbol
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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210 int context; // symbol context (-1 for global)
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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diff changeset
211 int version; // version of the symbol (for "set")
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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212 int flags; // flags for the symbol
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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213 sectiontab_t *section; // section the symbol is defined in
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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214 lw_expr_t value; // symbol value
195
17bd59f045af Changed symbol table to use a binary tree.
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parents: 156
diff changeset
215 struct symtabe *left; // left subtree pointer
17bd59f045af Changed symbol table to use a binary tree.
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parents: 156
diff changeset
216 struct symtabe *right; // right subtree pointer
17bd59f045af Changed symbol table to use a binary tree.
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parents: 156
diff changeset
217 struct symtabe *nextver; // next lower version
0
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218 };
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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219
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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220 typedef struct
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221 {
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222 struct symtabe *head; // start of symbol table
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223 } symtab_t;
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224
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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225 typedef struct macrotab_s macrotab_t;
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226 struct macrotab_s
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227 {
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228 char *name; // name of macro
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229 char **lines; // macro lines
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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230 int numlines; // number lines in macro
49
bd8b3fbd1e28 Added ability to flag macros as "noexpand" so they are not expanded in the listing
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diff changeset
231 int flags; // flags for the macro
0
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232 macrotab_t *next; // next macro in list
222
03f7192fcd20 Add --unicorns option for IDE integration
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parents: 219
diff changeset
233 line_t *definedat; // the line where the macro definition starts
0
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234 };
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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235
49
bd8b3fbd1e28 Added ability to flag macros as "noexpand" so they are not expanded in the listing
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diff changeset
236 enum
bd8b3fbd1e28 Added ability to flag macros as "noexpand" so they are not expanded in the listing
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diff changeset
237 {
bd8b3fbd1e28 Added ability to flag macros as "noexpand" so they are not expanded in the listing
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diff changeset
238 macro_noexpand = 1 // set to not expland the macro by default in listing
bd8b3fbd1e28 Added ability to flag macros as "noexpand" so they are not expanded in the listing
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239 };
bd8b3fbd1e28 Added ability to flag macros as "noexpand" so they are not expanded in the listing
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diff changeset
240
0
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241 typedef struct structtab_s structtab_t;
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242 typedef struct structtab_field_s structtab_field_t;
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243
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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244 struct structtab_field_s
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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245 {
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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246 char *name; // structure field name - NULL for anonymous
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247 int size; // structure field size
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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248 structtab_t *substruct; // sub structure if there is one
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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249 structtab_field_t *next; // next field entry
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250 };
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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251
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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252 struct structtab_s
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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253 {
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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254 char *name; // name of structure
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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255 int size; // number of bytes taken by struct
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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256 structtab_field_t *fields; // fields in the structure
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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257 structtab_t *next; // next structure
223
211fc8038b8d More unicorn stuff - structs and macros
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parents: 222
diff changeset
258 line_t *definedat; // line where structure is defined
0
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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259 };
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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260
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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261 struct asmstate_s
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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262 {
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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263 int output_format; // output format
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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264 int target; // assembly target
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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265 int debug_level; // level of debugging requested
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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266 FILE *debug_file; // FILE * to output debug messages to
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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267 int flags; // assembly flags
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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268 int pragmas; // pragmas currently in effect
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269 int errorcount; // number of errors encountered
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270 int warningcount; // number of warnings issued
0
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271 int inmacro; // are we in a macro?
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272 int instruct; // are w in a structure?
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273 int skipcond; // skipping a condition?
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274 int skipcount; // depth of "skipping"
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275 int skipmacro; // are we skipping in a macro?
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276 int endseen; // have we seen an "end" pseudo?
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277 int execaddr; // address from "end"
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278 int inmod; // inside an os9 module?
210
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279 int undefzero; // used for handling "condundefzero"
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280 int pretendmax; // set if we need to pretend the instruction is max length
0
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281 unsigned char crc[3]; // crc accumulator
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282 int badsymerr; // throw error on undef sym if set
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283
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284 line_t *line_head; // start of lines list
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285 line_t *line_tail; // tail of lines list
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286
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287 line_t *cl; // current line pointer
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288
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289 sectiontab_t *csect; // current section
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290
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291 int context; // the current "context"
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292 int nextcontext; // the next available context
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293
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294 symtab_t symtab; // meta data for the symbol table
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295 macrotab_t *macros; // macro table
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296 sectiontab_t *sections; // section table
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297 exportlist_t *exportlist; // list of exported symbols
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298 importlist_t *importlist; // list of imported symbols
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299 char *list_file; // name of file to list to
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300 char *output_file; // output file name
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301 lw_stringlist_t input_files; // files to assemble
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302 void *input_data; // opaque data used by the input system
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303 lw_stringlist_t include_list; // include paths
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304 lw_stack_t file_dir; // stack of the "current file" dir
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305 lw_stack_t includelist;
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306
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307 structtab_t *structs; // defined structures
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308 structtab_t *cstruct; // current structure
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309 lw_expr_t savedaddr; // old address counter before struct started
0
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310 int exportcheck; // set if we need to collapse out the section base to 0
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311 int passno; // set to the current pass number
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312 int preprocess; // set if we are prepocessing
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313 int fileerr; // flags error opening file
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314 };
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315
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316 #ifndef ___symbol_c_seen___
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317
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318 extern struct symtabe *register_symbol(asmstate_t *as, line_t *cl, char *sym, lw_expr_t value, int flags);
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319 extern struct symtabe *lookup_symbol(asmstate_t *as, line_t *cl, char *sym);
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320
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321 #endif
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322
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323 #ifndef ___lwasm_c_seen___
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324
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325 extern void lwasm_register_error(asmstate_t *as, line_t *cl, const char *msg, ...);
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326 extern void lwasm_register_warning(asmstate_t *as, line_t *cl, const char *msg, ...);
226
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327
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328 extern void lwasm_register_error_n(asmstate_t *as, line_t *cl, char *iptr, const char *msg, ...);
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329 extern void lwasm_register_warning_n(asmstate_t *as, line_t *cl, char *iptr, const char *msg, ...);
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330
0
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331 extern int lwasm_next_context(asmstate_t *as);
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332 extern void lwasm_emit(line_t *cl, int byte);
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333 extern void lwasm_emitop(line_t *cl, int opc);
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334
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335 extern void lwasm_save_expr(line_t *cl, int id, lw_expr_t expr);
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336 extern lw_expr_t lwasm_fetch_expr(line_t *cl, int id);
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337 extern lw_expr_t lwasm_parse_expr(asmstate_t *as, char **p);
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338 extern int lwasm_emitexpr(line_t *cl, lw_expr_t expr, int s);
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339
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340 extern void skip_operand(char **p);
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341
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342 extern int lwasm_lookupreg2(const char *rlist, char **p);
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343 extern int lwasm_lookupreg3(const char *rlist, char **p);
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344
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345 extern void lwasm_show_errors(asmstate_t *as);
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346
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347 extern int lwasm_reduce_expr(asmstate_t *as, lw_expr_t expr);
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348
2
7317fbe024af Clean up insane number of compiler warnings under -Wall
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349 extern lw_expr_t lwasm_parse_cond(asmstate_t *as, char **p);
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350
241
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351 extern int lwasm_calculate_range(asmstate_t *as, lw_expr_t expr, int *min, int *max);
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352
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353 #endif
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354
0
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355 extern void debug_message(asmstate_t *as, int level, const char *fmt, ...);
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356 extern void dump_state(asmstate_t *as);
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357
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358
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359 #define OPLEN(op) (((op)>0xFF)?2:1)
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360 #define CURPRAGMA(l,p) (((l) && ((l)->pragmas & (p))) ? 1 : 0)
0
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361
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362 #endif /* ___lwasm_h_seen___ */