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comparison lwasm/pass1.c @ 342:7b4123dce741

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Added basic symbol registration
author lost@starbug
date Wed, 24 Mar 2010 21:30:31 -0600
parents 1a6fc6ebb31c
children 0215a0fbf61b
comparison
equal deleted inserted replaced
341:4e1cff60c293 342:7b4123dce741
22 #include <config.h> 22 #include <config.h>
23 23
24 #include <stdio.h> 24 #include <stdio.h>
25 25
26 #include <lw_alloc.h> 26 #include <lw_alloc.h>
27 #include <lw_string.h>
27 28
28 #include "lwasm.h" 29 #include "lwasm.h"
30 #include "instab.h"
29 #include "input.h" 31 #include "input.h"
30 32
31 /* 33 /*
32 pass 1: parse the lines 34 pass 1: parse the lines
33 35
45 void do_pass1(asmstate_t *as) 47 void do_pass1(asmstate_t *as)
46 { 48 {
47 char *line; 49 char *line;
48 line_t *cl; 50 line_t *cl;
49 char *p1; 51 char *p1;
50 int stpace; 52 int stspace;
51 char *tok, *sym; 53 char *tok, *sym;
52 int opnum; 54 int opnum;
53 55
54 for (;;) 56 for (;;)
55 { 57 {
118 stspace = 0; 120 stspace = 0;
119 121
120 if (*p1 == '*' || *p1 == ';' || *p1 == '#' || !*p1) 122 if (*p1 == '*' || *p1 == ';' || *p1 == '#' || !*p1)
121 goto nextline; 123 goto nextline;
122 124
123 125 // find the end of the first token
124 for (tok = p1; *p1 && !isspace(*p1) && *p1 != ':'; p1++) 126 for (tok = p1; *p1 && !isspace(*p1) && *p1 != ':'; p1++)
125 /* do nothing */ ; 127 /* do nothing */ ;
126 128
127 if (*p1 == ':' || stspace == 0) 129 if (*p1 == ':' || stspace == 0)
128 { 130 {
177 } 179 }
178 } 180 }
179 181
180 if (cl -> sym && cl -> symset == 0) 182 if (cl -> sym && cl -> symset == 0)
181 { 183 {
184 printf("Register symbol %s:", sym);
185 lw_expr_print(cl -> addr);
186 printf("\n");
187
182 // register symbol at line address 188 // register symbol at line address
189 if (!register_symbol(as, cl -> sym, cl -> addr, symbol_flag_none))
190 {
191 // symbol error
192 }
183 } 193 }
184 194
185 lw_expr_print(cl -> addr); 195 lw_expr_print(cl -> addr);
186 printf("\n"); 196 printf("\n");
187 // now parse the line 197 // now parse the line