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annotate lwasm/pass1.c @ 6:1e5e8ec406fb
Various output cleanups for --help and --usage in lw_cmdline
author | lost@l-w.ca |
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date | Sat, 22 Jan 2011 09:31:43 -0700 |
parents | 7317fbe024af |
children | d96037ea0b80 |
rev | line source |
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0
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1 /* |
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2 pass1.c |
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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 #include <stdio.h> |
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23 #include <string.h> |
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24 #include <ctype.h> |
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25 #include <stdlib.h> |
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26 |
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27 #include <lw_alloc.h> |
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28 #include <lw_string.h> |
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29 |
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30 #include "lwasm.h" |
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31 #include "instab.h" |
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32 #include "input.h" |
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33 |
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34 extern int expand_macro(asmstate_t *as, line_t *l, char **p, char *opc); |
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35 extern int expand_struct(asmstate_t *as, line_t *l, char **p, char *opc); |
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36 extern int add_macro_line(asmstate_t *as, char *optr); |
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37 |
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38 /* |
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39 pass 1: parse the lines |
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40 |
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41 line format: |
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42 |
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43 [<symbol>] <opcode> <operand>[ <comment>] |
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44 |
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45 If <symbol> is followed by a :, whitespace may precede the symbol |
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46 |
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47 A line may optionally start with a number which must not be preceded by |
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48 white space and must be followed by a single whitespace character. After |
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49 that whitespace character, the line is parsed as if it had no line number. |
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50 |
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51 */ |
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52 void do_pass1(asmstate_t *as) |
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53 { |
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54 char *line; |
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55 line_t *cl; |
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56 char *p1; |
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57 int stspace; |
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58 char *tok, *sym; |
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59 int opnum; |
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60 int lc = 1; |
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61 for (;;) |
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62 { |
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63 sym = NULL; |
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64 line = input_readline(as); |
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65 if (!line) |
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66 break; |
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67 if (line[0] == 1 && line[1] == 1) |
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68 { |
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69 // special internal directive |
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70 // these DO NOT appear in the output anywhere |
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71 // they are generated by the parser to pass information |
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72 // forward |
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73 for (p1 = line + 2; *p1 && !isspace(*p1); p1++) |
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74 /* do nothing */ ; |
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75 *p1++ = '\0'; |
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76 if (!strcmp(line + 2, "SETCONTEXT")) |
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77 { |
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78 as -> context = strtol(p1, NULL, 10); |
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79 } |
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80 lw_free(line); |
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81 lc = 1; |
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82 continue; |
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83 } |
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84 debug_message(as, 75, "Read line: %s", line); |
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85 |
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86 cl = lw_alloc(sizeof(line_t)); |
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87 memset(cl, 0, sizeof(line_t)); |
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88 cl -> outputl = -1; |
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89 cl -> linespec = lw_strdup(input_curspec(as)); |
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90 cl -> prev = as -> line_tail; |
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91 cl -> insn = -1; |
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92 cl -> as = as; |
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93 cl -> inmod = as -> inmod; |
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94 cl -> csect = as -> csect; |
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95 cl -> pragmas = as -> pragmas; |
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96 cl -> context = as -> context; |
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97 cl -> ltext = lw_strdup(line); |
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98 cl -> soff = -1; |
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99 cl -> dshow = -1; |
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100 cl -> dsize = 0; |
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101 cl -> dptr = NULL; |
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102 cl -> isbrpt = 0; |
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103 as -> cl = cl; |
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104 if (!as -> line_tail) |
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105 { |
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106 as -> line_head = cl; |
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107 cl -> addr = lw_expr_build(lw_expr_type_int, 0); |
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108 } |
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109 else |
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110 { |
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111 lw_expr_t te; |
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112 |
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113 cl -> lineno = as -> line_tail -> lineno + 1; |
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114 as -> line_tail -> next = cl; |
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115 |
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116 // set the line address |
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117 te = lw_expr_build(lw_expr_type_special, lwasm_expr_linelen, cl -> prev); |
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118 cl -> addr = lw_expr_build(lw_expr_type_oper, lw_expr_oper_plus, cl -> prev -> addr, te); |
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119 lw_expr_destroy(te); |
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Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff
changeset
|
120 lwasm_reduce_expr(as, cl -> addr); |
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff
changeset
|
121 // lw_expr_simplify(cl -> addr, as); |
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff
changeset
|
122 |
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff
changeset
|
123 // carry DP value forward |
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff
changeset
|
124 cl -> dpval = cl -> prev -> dpval; |
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff
changeset
|
125 |
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff
changeset
|
126 } |
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff
changeset
|
127 if (!lc && strcmp(cl -> linespec, cl -> prev -> linespec)) |
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff
changeset
|
128 lc = 1; |
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff
changeset
|
129 if (lc) |
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff
changeset
|
130 { |
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff
changeset
|
131 cl -> lineno = 1; |
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff
changeset
|
132 lc = 0; |
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff
changeset
|
133 } |
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff
changeset
|
134 as -> line_tail = cl; |
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff
changeset
|
135 // blank lines don't count for anything |
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff
changeset
|
136 // except a local symbol context break |
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff
changeset
|
137 if (!*line) |
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff
changeset
|
138 { |
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff
changeset
|
139 as -> context = lwasm_next_context(as); |
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff
changeset
|
140 goto nextline; |
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff
changeset
|
141 } |
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff
changeset
|
142 |
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff
changeset
|
143 // skip comments |
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff
changeset
|
144 // commends do not create a context break |
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff
changeset
|
145 if (*line == '*' || *line == ';' || *line == '#') |
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff
changeset
|
146 goto nextline; |
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff
changeset
|
147 |
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff
changeset
|
148 p1 = line; |
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff
changeset
|
149 if (isdigit(*p1)) |
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff
changeset
|
150 { |
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff
changeset
|
151 // skip line number |
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff
changeset
|
152 while (*p1 && isdigit(*p1)) |
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff
changeset
|
153 p1++; |
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff
changeset
|
154 if (!*p1 && !isspace(*p1)) |
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff
changeset
|
155 p1 = line; |
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff
changeset
|
156 else if (*p1 && !isspace(*p1)) |
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff
changeset
|
157 p1 = line; |
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff
changeset
|
158 else if (*p1 && isspace(*p1)) |
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff
changeset
|
159 p1++; |
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff
changeset
|
160 } |
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff
changeset
|
161 |
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff
changeset
|
162 // blank line - context break |
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff
changeset
|
163 if (!*p1) |
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff
changeset
|
164 { |
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff
changeset
|
165 as -> context = lwasm_next_context(as); |
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff
changeset
|
166 goto nextline; |
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff
changeset
|
167 } |
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff
changeset
|
168 |
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff
changeset
|
169 // comment - no context break |
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff
changeset
|
170 if (*p1 == '*' || *p1 == ';' || *p1 == '#') |
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff
changeset
|
171 goto nextline; |
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff
changeset
|
172 |
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff
changeset
|
173 if (isspace(*p1)) |
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff
changeset
|
174 { |
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff
changeset
|
175 for (; *p1 && isspace(*p1); p1++) |
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff
changeset
|
176 /* do nothing */ ; |
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff
changeset
|
177 stspace = 1; |
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff
changeset
|
178 } |
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff
changeset
|
179 else |
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff
changeset
|
180 stspace = 0; |
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff
changeset
|
181 |
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff
changeset
|
182 if (*p1 == '*' || *p1 == ';' || *p1 == '#') |
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff
changeset
|
183 goto nextline; |
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff
changeset
|
184 if (!*p1) |
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff
changeset
|
185 { |
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff
changeset
|
186 // nothing but whitespace - context break |
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff
changeset
|
187 as -> context = lwasm_next_context(as); |
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff
changeset
|
188 goto nextline; |
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff
changeset
|
189 } |
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff
changeset
|
190 |
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff
changeset
|
191 // find the end of the first token |
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff
changeset
|
192 for (tok = p1; *p1 && !isspace(*p1) && *p1 != ':' && *p1 != '='; p1++) |
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff
changeset
|
193 /* do nothing */ ; |
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff
changeset
|
194 |
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff
changeset
|
195 if (*p1 == ':' || *p1 == '=' || stspace == 0) |
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff
changeset
|
196 { |
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff
changeset
|
197 // have a symbol here |
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff
changeset
|
198 sym = lw_strndup(tok, p1 - tok); |
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff
changeset
|
199 if (*p1 == ':') |
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff
changeset
|
200 p1++; |
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff
changeset
|
201 for (; *p1 && isspace(*p1); p1++) |
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff
changeset
|
202 /* do nothing */ ; |
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff
changeset
|
203 |
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff
changeset
|
204 if (*p1 == '=') |
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff
changeset
|
205 { |
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff
changeset
|
206 tok = p1++; |
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff
changeset
|
207 } |
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff
changeset
|
208 else |
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff
changeset
|
209 { |
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff
changeset
|
210 for (tok = p1; *p1 && !isspace(*p1); p1++) |
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff
changeset
|
211 /* do nothing */ ; |
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff
changeset
|
212 } |
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff
changeset
|
213 } |
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff
changeset
|
214 if (sym && strcmp(sym, "!") == 0) |
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff
changeset
|
215 cl -> isbrpt = 1; |
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff
changeset
|
216 else if (sym) |
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff
changeset
|
217 cl -> sym = lw_strdup(sym); |
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff
changeset
|
218 cl -> symset = 0; |
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff
changeset
|
219 |
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff
changeset
|
220 // tok points to the opcode for the line or NUL if none |
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff
changeset
|
221 if (*tok) |
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff
changeset
|
222 { |
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff
changeset
|
223 // look up operation code |
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff
changeset
|
224 sym = lw_strndup(tok, p1 - tok); |
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff
changeset
|
225 for (; *p1 && isspace(*p1); p1++) |
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff
changeset
|
226 /* do nothing */ ; |
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff
changeset
|
227 |
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff
changeset
|
228 for (opnum = 0; instab[opnum].opcode; opnum++) |
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff
changeset
|
229 { |
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff
changeset
|
230 if (!strcasecmp(instab[opnum].opcode, sym)) |
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff
changeset
|
231 break; |
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff
changeset
|
232 } |
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff
changeset
|
233 |
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff
changeset
|
234 // p1 points to the start of the operand |
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff
changeset
|
235 |
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff
changeset
|
236 // if we're inside a macro definition and not at ENDM, |
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff
changeset
|
237 // add the line to the macro definition and continue |
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff
changeset
|
238 if (as -> inmacro && !(instab[opnum].flags & lwasm_insn_endm)) |
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff
changeset
|
239 { |
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff
changeset
|
240 add_macro_line(as, line); |
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff
changeset
|
241 goto linedone; |
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
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242 } |
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243 |
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244 // if skipping a condition and the operation code doesn't |
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245 // operate within a condition (not a conditional) |
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246 // do nothing |
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247 if (as -> skipcond && !(instab[opnum].flags & lwasm_insn_cond)) |
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Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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248 goto linedone; |
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249 |
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250 if (instab[opnum].opcode == NULL) |
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251 { |
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252 cl -> insn = -1; |
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253 if (*tok != ';' && *tok != '*') |
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254 { |
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255 // bad opcode; check for macro here |
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256 if (expand_macro(as, cl, &p1, sym) != 0) |
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257 { |
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258 // macro expansion failed |
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259 if (expand_struct(as, cl, &p1, sym) != 0) |
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260 { |
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261 // structure expansion failed |
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262 lwasm_register_error(as, cl, "Bad opcode"); |
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263 } |
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264 } |
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Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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265 } |
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Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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266 } |
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Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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267 else |
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Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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268 { |
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269 cl -> insn = opnum; |
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270 // no parse func means operand doesn't matter |
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271 if (instab[opnum].parse) |
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272 { |
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273 if (as -> instruct == 0 || instab[opnum].flags & lwasm_insn_struct) |
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274 { |
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275 cl -> len = -1; |
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276 // call parse function |
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277 (instab[opnum].parse)(as, cl, &p1); |
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278 |
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279 if (*p1 && !isspace(*p1)) |
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280 { |
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281 // flag bad operand error |
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282 lwasm_register_error(as, cl, "Bad operand (%s)", p1); |
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Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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283 } |
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Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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284 } |
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Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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285 else if (as -> instruct == 1) |
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Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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286 { |
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287 lwasm_register_error(as, cl, "Bad operand (%s)", p1); |
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Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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288 } |
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289 } |
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290 } |
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Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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291 } |
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Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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292 |
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293 linedone: |
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294 lw_free(sym); |
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295 |
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296 if (!as -> skipcond && !as -> inmacro) |
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297 { |
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Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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298 if (cl -> sym && cl -> symset == 0) |
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Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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299 { |
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300 debug_message(as, 50, "Register symbol %s: %s", cl -> sym, lw_expr_print(cl -> addr)); |
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Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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301 |
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302 // register symbol at line address |
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Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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303 if (!register_symbol(as, cl, cl -> sym, cl -> addr, symbol_flag_none)) |
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Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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304 { |
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Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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305 // symbol error |
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Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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306 // lwasm_register_error(as, cl, "Bad symbol '%s'", cl -> sym); |
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Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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307 } |
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Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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308 } |
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Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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309 debug_message(as, 40, "Line address: %s", lw_expr_print(cl -> addr)); |
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Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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310 } |
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Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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311 |
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Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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312 nextline: |
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313 lw_free(line); |
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Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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314 |
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315 // if we've hit the "end" bit, finish out |
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Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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316 if (as -> endseen) |
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Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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317 return; |
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Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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318 } |
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Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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319 } |