LWTools Old Repo: lwasm/pass1.c annotate

annotate lwasm/pass1.c @ 345:7416c3f9c321

Basic macro processor ported forward; added context break handling for local symbols

author	lost@starbug
date	Thu, 25 Mar 2010 23:17:54 -0600
parents	0215a0fbf61b
children	a82c55070624

rev	line source
332 67224d8d1024 Basic input layer works lost parents: diff changeset	1 /*
67224d8d1024 Basic input layer works lost parents: diff changeset	2 pass1.c
67224d8d1024 Basic input layer works lost parents: diff changeset	3
67224d8d1024 Basic input layer works lost parents: diff changeset	4 Copyright © 2010 William Astle
67224d8d1024 Basic input layer works lost parents: diff changeset	5
67224d8d1024 Basic input layer works lost parents: diff changeset	6 This file is part of LWTOOLS.
67224d8d1024 Basic input layer works lost parents: diff changeset	7
67224d8d1024 Basic input layer works lost parents: diff changeset	8 LWTOOLS is free software: you can redistribute it and/or modify it under the
67224d8d1024 Basic input layer works lost parents: diff changeset	9 terms of the GNU General Public License as published by the Free Software
67224d8d1024 Basic input layer works lost parents: diff changeset	10 Foundation, either version 3 of the License, or (at your option) any later
67224d8d1024 Basic input layer works lost parents: diff changeset	11 version.
67224d8d1024 Basic input layer works lost parents: diff changeset	12
67224d8d1024 Basic input layer works lost parents: diff changeset	13 This program is distributed in the hope that it will be useful, but WITHOUT
67224d8d1024 Basic input layer works lost parents: diff changeset	14 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
67224d8d1024 Basic input layer works lost parents: diff changeset	15 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
67224d8d1024 Basic input layer works lost parents: diff changeset	16 more details.
67224d8d1024 Basic input layer works lost parents: diff changeset	17
67224d8d1024 Basic input layer works lost parents: diff changeset	18 You should have received a copy of the GNU General Public License along with
67224d8d1024 Basic input layer works lost parents: diff changeset	19 this program. If not, see <http://www.gnu.org/licenses/>.
67224d8d1024 Basic input layer works lost parents: diff changeset	20 */
67224d8d1024 Basic input layer works lost parents: diff changeset	21
67224d8d1024 Basic input layer works lost parents: diff changeset	22 #include <config.h>
67224d8d1024 Basic input layer works lost parents: diff changeset	23
67224d8d1024 Basic input layer works lost parents: diff changeset	24 #include <stdio.h>
67224d8d1024 Basic input layer works lost parents: diff changeset	25
67224d8d1024 Basic input layer works lost parents: diff changeset	26 #include <lw_alloc.h>
342 7b4123dce741 Added basic symbol registration lost@starbug parents: 340 diff changeset	27 #include <lw_string.h>
332 67224d8d1024 Basic input layer works lost parents: diff changeset	28
67224d8d1024 Basic input layer works lost parents: diff changeset	29 #include "lwasm.h"
342 7b4123dce741 Added basic symbol registration lost@starbug parents: 340 diff changeset	30 #include "instab.h"
332 67224d8d1024 Basic input layer works lost parents: diff changeset	31 #include "input.h"
67224d8d1024 Basic input layer works lost parents: diff changeset	32
337 04c80c51b16a Checkpoint development lost parents: 332 diff changeset	33 /*
04c80c51b16a Checkpoint development lost parents: 332 diff changeset	34 pass 1: parse the lines
340 1a6fc6ebb31c Checkpoint lost parents: 337 diff changeset	35
1a6fc6ebb31c Checkpoint lost parents: 337 diff changeset	36 line format:
1a6fc6ebb31c Checkpoint lost parents: 337 diff changeset	37
1a6fc6ebb31c Checkpoint lost parents: 337 diff changeset	38 [<symbol>] <opcode> <operand>[ <comment>]
1a6fc6ebb31c Checkpoint lost parents: 337 diff changeset	39
1a6fc6ebb31c Checkpoint lost parents: 337 diff changeset	40 If <symbol> is followed by a :, whitespace may precede the symbol
1a6fc6ebb31c Checkpoint lost parents: 337 diff changeset	41
1a6fc6ebb31c Checkpoint lost parents: 337 diff changeset	42 A line may optionally start with a number which must not be preceded by
1a6fc6ebb31c Checkpoint lost parents: 337 diff changeset	43 white space and must be followed by a single whitespace character. After
1a6fc6ebb31c Checkpoint lost parents: 337 diff changeset	44 that whitespace character, the line is parsed as if it had no line number.
1a6fc6ebb31c Checkpoint lost parents: 337 diff changeset	45
337 04c80c51b16a Checkpoint development lost parents: 332 diff changeset	46 */
332 67224d8d1024 Basic input layer works lost parents: diff changeset	47 void do_pass1(asmstate_t *as)
67224d8d1024 Basic input layer works lost parents: diff changeset	48 {
67224d8d1024 Basic input layer works lost parents: diff changeset	49 char *line;
337 04c80c51b16a Checkpoint development lost parents: 332 diff changeset	50 line_t *cl;
340 1a6fc6ebb31c Checkpoint lost parents: 337 diff changeset	51 char *p1;
342 7b4123dce741 Added basic symbol registration lost@starbug parents: 340 diff changeset	52 int stspace;
340 1a6fc6ebb31c Checkpoint lost parents: 337 diff changeset	53 char tok, sym;
1a6fc6ebb31c Checkpoint lost parents: 337 diff changeset	54 int opnum;
1a6fc6ebb31c Checkpoint lost parents: 337 diff changeset	55
332 67224d8d1024 Basic input layer works lost parents: diff changeset	56 for (;;)
67224d8d1024 Basic input layer works lost parents: diff changeset	57 {
340 1a6fc6ebb31c Checkpoint lost parents: 337 diff changeset	58 sym = NULL;
332 67224d8d1024 Basic input layer works lost parents: diff changeset	59 line = input_readline(as);
67224d8d1024 Basic input layer works lost parents: diff changeset	60 if (!line)
67224d8d1024 Basic input layer works lost parents: diff changeset	61 break;
345 7416c3f9c321 Basic macro processor ported forward; added context break handling for local symbols lost@starbug parents: 344 diff changeset	62 if (line[0] == 1 && line[1] == 1)
7416c3f9c321 Basic macro processor ported forward; added context break handling for local symbols lost@starbug parents: 344 diff changeset	63 {
7416c3f9c321 Basic macro processor ported forward; added context break handling for local symbols lost@starbug parents: 344 diff changeset	64 // special internal directive
7416c3f9c321 Basic macro processor ported forward; added context break handling for local symbols lost@starbug parents: 344 diff changeset	65 // these DO NOT appear in the output anywhere
7416c3f9c321 Basic macro processor ported forward; added context break handling for local symbols lost@starbug parents: 344 diff changeset	66 // they are generated by the parser to pass information
7416c3f9c321 Basic macro processor ported forward; added context break handling for local symbols lost@starbug parents: 344 diff changeset	67 // forward
7416c3f9c321 Basic macro processor ported forward; added context break handling for local symbols lost@starbug parents: 344 diff changeset	68 for (p1 = line + 2; p1 && !isspace(p1); p1++)
7416c3f9c321 Basic macro processor ported forward; added context break handling for local symbols lost@starbug parents: 344 diff changeset	69 /* do nothing */ ;
7416c3f9c321 Basic macro processor ported forward; added context break handling for local symbols lost@starbug parents: 344 diff changeset	70 *p1++ = '\0';
7416c3f9c321 Basic macro processor ported forward; added context break handling for local symbols lost@starbug parents: 344 diff changeset	71 if (!strcmp(line + 2, "SETCONTEXT"))
7416c3f9c321 Basic macro processor ported forward; added context break handling for local symbols lost@starbug parents: 344 diff changeset	72 {
7416c3f9c321 Basic macro processor ported forward; added context break handling for local symbols lost@starbug parents: 344 diff changeset	73 as -> context = strtol(p1, NULL, 10);
7416c3f9c321 Basic macro processor ported forward; added context break handling for local symbols lost@starbug parents: 344 diff changeset	74 }
7416c3f9c321 Basic macro processor ported forward; added context break handling for local symbols lost@starbug parents: 344 diff changeset	75 lw_free(line);
7416c3f9c321 Basic macro processor ported forward; added context break handling for local symbols lost@starbug parents: 344 diff changeset	76 continue;
7416c3f9c321 Basic macro processor ported forward; added context break handling for local symbols lost@starbug parents: 344 diff changeset	77 }
332 67224d8d1024 Basic input layer works lost parents: diff changeset	78 printf("%s\n", line);
337 04c80c51b16a Checkpoint development lost parents: 332 diff changeset	79
04c80c51b16a Checkpoint development lost parents: 332 diff changeset	80 cl = lw_alloc(sizeof(line_t));
04c80c51b16a Checkpoint development lost parents: 332 diff changeset	81 cl -> next = NULL;
04c80c51b16a Checkpoint development lost parents: 332 diff changeset	82 cl -> prev = as -> line_tail;
04c80c51b16a Checkpoint development lost parents: 332 diff changeset	83 cl -> len = -1;
04c80c51b16a Checkpoint development lost parents: 332 diff changeset	84 cl -> insn = -1;
344 0215a0fbf61b Added assembly error system and additional checks for symbol syntax lost@starbug parents: 342 diff changeset	85 cl -> err = NULL;
337 04c80c51b16a Checkpoint development lost parents: 332 diff changeset	86 if (!as -> line_tail)
04c80c51b16a Checkpoint development lost parents: 332 diff changeset	87 {
04c80c51b16a Checkpoint development lost parents: 332 diff changeset	88 as -> line_head = cl;
04c80c51b16a Checkpoint development lost parents: 332 diff changeset	89 cl -> addr = lw_expr_build(lw_expr_type_int, 0);
04c80c51b16a Checkpoint development lost parents: 332 diff changeset	90 }
04c80c51b16a Checkpoint development lost parents: 332 diff changeset	91 else
04c80c51b16a Checkpoint development lost parents: 332 diff changeset	92 {
04c80c51b16a Checkpoint development lost parents: 332 diff changeset	93 lw_expr_t te;
04c80c51b16a Checkpoint development lost parents: 332 diff changeset	94 as -> line_tail -> next = cl;
04c80c51b16a Checkpoint development lost parents: 332 diff changeset	95 te = lw_expr_build(lw_expr_type_special, lwasm_expr_linelen, cl -> prev);
04c80c51b16a Checkpoint development lost parents: 332 diff changeset	96 cl -> addr = lw_expr_build(lw_expr_type_oper, lw_expr_oper_plus, cl -> prev -> addr, te);
04c80c51b16a Checkpoint development lost parents: 332 diff changeset	97 lw_expr_destroy(te);
04c80c51b16a Checkpoint development lost parents: 332 diff changeset	98 lw_expr_simplify(cl -> addr);
04c80c51b16a Checkpoint development lost parents: 332 diff changeset	99 }
04c80c51b16a Checkpoint development lost parents: 332 diff changeset	100 as -> line_tail = cl;
04c80c51b16a Checkpoint development lost parents: 332 diff changeset	101
340 1a6fc6ebb31c Checkpoint lost parents: 337 diff changeset	102 // blank lines don't count for anything
345 7416c3f9c321 Basic macro processor ported forward; added context break handling for local symbols lost@starbug parents: 344 diff changeset	103 // except a local symbol context break
340 1a6fc6ebb31c Checkpoint lost parents: 337 diff changeset	104 if (!*line)
1a6fc6ebb31c Checkpoint lost parents: 337 diff changeset	105 {
345 7416c3f9c321 Basic macro processor ported forward; added context break handling for local symbols lost@starbug parents: 344 diff changeset	106 as -> context = lwasm_next_context(as);
340 1a6fc6ebb31c Checkpoint lost parents: 337 diff changeset	107 goto nextline;
1a6fc6ebb31c Checkpoint lost parents: 337 diff changeset	108 }
1a6fc6ebb31c Checkpoint lost parents: 337 diff changeset	109
1a6fc6ebb31c Checkpoint lost parents: 337 diff changeset	110 // skip comments
345 7416c3f9c321 Basic macro processor ported forward; added context break handling for local symbols lost@starbug parents: 344 diff changeset	111 // commends do not create a context break
340 1a6fc6ebb31c Checkpoint lost parents: 337 diff changeset	112 if (line == '' \|\| line == ';' \|\| line == '#')
1a6fc6ebb31c Checkpoint lost parents: 337 diff changeset	113 goto nextline;
1a6fc6ebb31c Checkpoint lost parents: 337 diff changeset	114
1a6fc6ebb31c Checkpoint lost parents: 337 diff changeset	115 p1 = line;
1a6fc6ebb31c Checkpoint lost parents: 337 diff changeset	116 if (isdigit(*p1))
1a6fc6ebb31c Checkpoint lost parents: 337 diff changeset	117 {
1a6fc6ebb31c Checkpoint lost parents: 337 diff changeset	118 // skip line number
1a6fc6ebb31c Checkpoint lost parents: 337 diff changeset	119 while (p1 && isdigit(p1))
1a6fc6ebb31c Checkpoint lost parents: 337 diff changeset	120 p1++;
1a6fc6ebb31c Checkpoint lost parents: 337 diff changeset	121 if (!p1 && !isspace(p1))
1a6fc6ebb31c Checkpoint lost parents: 337 diff changeset	122 p1 = line;
1a6fc6ebb31c Checkpoint lost parents: 337 diff changeset	123 else if (p1 && isspace(p1))
1a6fc6ebb31c Checkpoint lost parents: 337 diff changeset	124 p1++;
1a6fc6ebb31c Checkpoint lost parents: 337 diff changeset	125 }
1a6fc6ebb31c Checkpoint lost parents: 337 diff changeset	126
345 7416c3f9c321 Basic macro processor ported forward; added context break handling for local symbols lost@starbug parents: 344 diff changeset	127 // blank line - context break
340 1a6fc6ebb31c Checkpoint lost parents: 337 diff changeset	128 if (!*p1)
345 7416c3f9c321 Basic macro processor ported forward; added context break handling for local symbols lost@starbug parents: 344 diff changeset	129 {
7416c3f9c321 Basic macro processor ported forward; added context break handling for local symbols lost@starbug parents: 344 diff changeset	130 as -> context = lwasm_next_context(as);
340 1a6fc6ebb31c Checkpoint lost parents: 337 diff changeset	131 goto nextline;
345 7416c3f9c321 Basic macro processor ported forward; added context break handling for local symbols lost@starbug parents: 344 diff changeset	132 }
340 1a6fc6ebb31c Checkpoint lost parents: 337 diff changeset	133
345 7416c3f9c321 Basic macro processor ported forward; added context break handling for local symbols lost@starbug parents: 344 diff changeset	134 // comment - no context break
340 1a6fc6ebb31c Checkpoint lost parents: 337 diff changeset	135 if (p1 == '' \|\| p1 == ';' \|\| p1 == '#')
1a6fc6ebb31c Checkpoint lost parents: 337 diff changeset	136 goto nextline;
1a6fc6ebb31c Checkpoint lost parents: 337 diff changeset	137
1a6fc6ebb31c Checkpoint lost parents: 337 diff changeset	138 if (isspace(*p1))
1a6fc6ebb31c Checkpoint lost parents: 337 diff changeset	139 {
1a6fc6ebb31c Checkpoint lost parents: 337 diff changeset	140 for (; p1 && isspace(p1); p1++)
1a6fc6ebb31c Checkpoint lost parents: 337 diff changeset	141 /* do nothing */ ;
1a6fc6ebb31c Checkpoint lost parents: 337 diff changeset	142 stspace = 1;
1a6fc6ebb31c Checkpoint lost parents: 337 diff changeset	143 }
1a6fc6ebb31c Checkpoint lost parents: 337 diff changeset	144 else
1a6fc6ebb31c Checkpoint lost parents: 337 diff changeset	145 stspace = 0;
1a6fc6ebb31c Checkpoint lost parents: 337 diff changeset	146
345 7416c3f9c321 Basic macro processor ported forward; added context break handling for local symbols lost@starbug parents: 344 diff changeset	147 if (p1 == '' \|\| p1 == ';' \|\| p1 == '#')
340 1a6fc6ebb31c Checkpoint lost parents: 337 diff changeset	148 goto nextline;
345 7416c3f9c321 Basic macro processor ported forward; added context break handling for local symbols lost@starbug parents: 344 diff changeset	149 if (!*p1)
7416c3f9c321 Basic macro processor ported forward; added context break handling for local symbols lost@starbug parents: 344 diff changeset	150 {
7416c3f9c321 Basic macro processor ported forward; added context break handling for local symbols lost@starbug parents: 344 diff changeset	151 // nothing but whitespace - context break
7416c3f9c321 Basic macro processor ported forward; added context break handling for local symbols lost@starbug parents: 344 diff changeset	152 as -> context = lwasm_next_context(as);
7416c3f9c321 Basic macro processor ported forward; added context break handling for local symbols lost@starbug parents: 344 diff changeset	153 goto nextline;
7416c3f9c321 Basic macro processor ported forward; added context break handling for local symbols lost@starbug parents: 344 diff changeset	154 }
340 1a6fc6ebb31c Checkpoint lost parents: 337 diff changeset	155
342 7b4123dce741 Added basic symbol registration lost@starbug parents: 340 diff changeset	156 // find the end of the first token
340 1a6fc6ebb31c Checkpoint lost parents: 337 diff changeset	157 for (tok = p1; p1 && !isspace(p1) && *p1 != ':'; p1++)
1a6fc6ebb31c Checkpoint lost parents: 337 diff changeset	158 /* do nothing */ ;
1a6fc6ebb31c Checkpoint lost parents: 337 diff changeset	159
1a6fc6ebb31c Checkpoint lost parents: 337 diff changeset	160 if (*p1 == ':' \|\| stspace == 0)
1a6fc6ebb31c Checkpoint lost parents: 337 diff changeset	161 {
1a6fc6ebb31c Checkpoint lost parents: 337 diff changeset	162 // have a symbol here
1a6fc6ebb31c Checkpoint lost parents: 337 diff changeset	163 sym = lw_strndup(tok, p1 - tok);
1a6fc6ebb31c Checkpoint lost parents: 337 diff changeset	164 if (*p1 == ':')
1a6fc6ebb31c Checkpoint lost parents: 337 diff changeset	165 p1++;
1a6fc6ebb31c Checkpoint lost parents: 337 diff changeset	166 for (; p1 && isspace(p1); p1++)
1a6fc6ebb31c Checkpoint lost parents: 337 diff changeset	167 /* do nothing */ ;
1a6fc6ebb31c Checkpoint lost parents: 337 diff changeset	168
1a6fc6ebb31c Checkpoint lost parents: 337 diff changeset	169 for (tok = p1; p1 && !isspace(p1); p1++)
1a6fc6ebb31c Checkpoint lost parents: 337 diff changeset	170 /* do nothing */ ;
1a6fc6ebb31c Checkpoint lost parents: 337 diff changeset	171 }
1a6fc6ebb31c Checkpoint lost parents: 337 diff changeset	172
1a6fc6ebb31c Checkpoint lost parents: 337 diff changeset	173 cl -> sym = sym;
1a6fc6ebb31c Checkpoint lost parents: 337 diff changeset	174 cl -> symset = 0;
1a6fc6ebb31c Checkpoint lost parents: 337 diff changeset	175
1a6fc6ebb31c Checkpoint lost parents: 337 diff changeset	176 // tok points to the opcode for the line or NUL if none
1a6fc6ebb31c Checkpoint lost parents: 337 diff changeset	177 if (*tok)
1a6fc6ebb31c Checkpoint lost parents: 337 diff changeset	178 {
1a6fc6ebb31c Checkpoint lost parents: 337 diff changeset	179 // look up operation code
1a6fc6ebb31c Checkpoint lost parents: 337 diff changeset	180 sym = lw_strndup(tok, p1 - tok);
1a6fc6ebb31c Checkpoint lost parents: 337 diff changeset	181 for (; *p1 && isspace(p1); p1++)
1a6fc6ebb31c Checkpoint lost parents: 337 diff changeset	182 /* do nothing */ ;
1a6fc6ebb31c Checkpoint lost parents: 337 diff changeset	183
1a6fc6ebb31c Checkpoint lost parents: 337 diff changeset	184 for (opnum = 0; instab[opnum].opcode; opnum++)
1a6fc6ebb31c Checkpoint lost parents: 337 diff changeset	185 {
1a6fc6ebb31c Checkpoint lost parents: 337 diff changeset	186 if (!strcasecmp(instab[opnum].opcode, sym))
1a6fc6ebb31c Checkpoint lost parents: 337 diff changeset	187 break;
1a6fc6ebb31c Checkpoint lost parents: 337 diff changeset	188 }
1a6fc6ebb31c Checkpoint lost parents: 337 diff changeset	189
1a6fc6ebb31c Checkpoint lost parents: 337 diff changeset	190 // p1 points to the start of the operand
1a6fc6ebb31c Checkpoint lost parents: 337 diff changeset	191
345 7416c3f9c321 Basic macro processor ported forward; added context break handling for local symbols lost@starbug parents: 344 diff changeset	192 // if we're inside a macro definition and not at ENDM,
7416c3f9c321 Basic macro processor ported forward; added context break handling for local symbols lost@starbug parents: 344 diff changeset	193 // add the line to the macro definition and continue
7416c3f9c321 Basic macro processor ported forward; added context break handling for local symbols lost@starbug parents: 344 diff changeset	194 if (as -> inmacro && !(instab[opnum].flags & lwasm_insn_endm))
7416c3f9c321 Basic macro processor ported forward; added context break handling for local symbols lost@starbug parents: 344 diff changeset	195 {
7416c3f9c321 Basic macro processor ported forward; added context break handling for local symbols lost@starbug parents: 344 diff changeset	196 add_macro_line(as, line);
7416c3f9c321 Basic macro processor ported forward; added context break handling for local symbols lost@starbug parents: 344 diff changeset	197 goto linedone;
7416c3f9c321 Basic macro processor ported forward; added context break handling for local symbols lost@starbug parents: 344 diff changeset	198 }
7416c3f9c321 Basic macro processor ported forward; added context break handling for local symbols lost@starbug parents: 344 diff changeset	199
7416c3f9c321 Basic macro processor ported forward; added context break handling for local symbols lost@starbug parents: 344 diff changeset	200 // if skipping a condition and the operation code doesn't
7416c3f9c321 Basic macro processor ported forward; added context break handling for local symbols lost@starbug parents: 344 diff changeset	201 // operate within a condition (not a conditional)
7416c3f9c321 Basic macro processor ported forward; added context break handling for local symbols lost@starbug parents: 344 diff changeset	202 // do nothing
7416c3f9c321 Basic macro processor ported forward; added context break handling for local symbols lost@starbug parents: 344 diff changeset	203 if (as -> skipcond && !(instab[opnum].flags & lwasm_insn_cond))
7416c3f9c321 Basic macro processor ported forward; added context break handling for local symbols lost@starbug parents: 344 diff changeset	204 goto linedone;
7416c3f9c321 Basic macro processor ported forward; added context break handling for local symbols lost@starbug parents: 344 diff changeset	205
340 1a6fc6ebb31c Checkpoint lost parents: 337 diff changeset	206 if (instab[opnum].opcode == NULL)
1a6fc6ebb31c Checkpoint lost parents: 337 diff changeset	207 {
1a6fc6ebb31c Checkpoint lost parents: 337 diff changeset	208 cl -> insn = -1;
1a6fc6ebb31c Checkpoint lost parents: 337 diff changeset	209 if (tok != ';' && tok != '*')
1a6fc6ebb31c Checkpoint lost parents: 337 diff changeset	210 {
1a6fc6ebb31c Checkpoint lost parents: 337 diff changeset	211 // bad opcode; check for macro here
345 7416c3f9c321 Basic macro processor ported forward; added context break handling for local symbols lost@starbug parents: 344 diff changeset	212 if (expand_macro(as, cl, &p1, sym) != 0)
7416c3f9c321 Basic macro processor ported forward; added context break handling for local symbols lost@starbug parents: 344 diff changeset	213 {
7416c3f9c321 Basic macro processor ported forward; added context break handling for local symbols lost@starbug parents: 344 diff changeset	214 // macro expansion failed
7416c3f9c321 Basic macro processor ported forward; added context break handling for local symbols lost@starbug parents: 344 diff changeset	215 lwasm_register_error(as, cl, "Bad opcode");
7416c3f9c321 Basic macro processor ported forward; added context break handling for local symbols lost@starbug parents: 344 diff changeset	216 }
340 1a6fc6ebb31c Checkpoint lost parents: 337 diff changeset	217 }
1a6fc6ebb31c Checkpoint lost parents: 337 diff changeset	218 }
1a6fc6ebb31c Checkpoint lost parents: 337 diff changeset	219 else
1a6fc6ebb31c Checkpoint lost parents: 337 diff changeset	220 {
1a6fc6ebb31c Checkpoint lost parents: 337 diff changeset	221 cl -> insn = opnum;
345 7416c3f9c321 Basic macro processor ported forward; added context break handling for local symbols lost@starbug parents: 344 diff changeset	222 // no parse func means operand doesn't matter
7416c3f9c321 Basic macro processor ported forward; added context break handling for local symbols lost@starbug parents: 344 diff changeset	223 if (instab[opnum].parse)
340 1a6fc6ebb31c Checkpoint lost parents: 337 diff changeset	224 {
345 7416c3f9c321 Basic macro processor ported forward; added context break handling for local symbols lost@starbug parents: 344 diff changeset	225 // call parse function
7416c3f9c321 Basic macro processor ported forward; added context break handling for local symbols lost@starbug parents: 344 diff changeset	226 (instab[opnum].parse)(as, cl, &p1);
7416c3f9c321 Basic macro processor ported forward; added context break handling for local symbols lost@starbug parents: 344 diff changeset	227
7416c3f9c321 Basic macro processor ported forward; added context break handling for local symbols lost@starbug parents: 344 diff changeset	228 if (p1 && !isspace(p1))
7416c3f9c321 Basic macro processor ported forward; added context break handling for local symbols lost@starbug parents: 344 diff changeset	229 {
7416c3f9c321 Basic macro processor ported forward; added context break handling for local symbols lost@starbug parents: 344 diff changeset	230 // flag bad operand error
7416c3f9c321 Basic macro processor ported forward; added context break handling for local symbols lost@starbug parents: 344 diff changeset	231 lwasm_register_error(as, cl, "Bad operand (%s)", p1);
7416c3f9c321 Basic macro processor ported forward; added context break handling for local symbols lost@starbug parents: 344 diff changeset	232 }
340 1a6fc6ebb31c Checkpoint lost parents: 337 diff changeset	233 }
1a6fc6ebb31c Checkpoint lost parents: 337 diff changeset	234 }
1a6fc6ebb31c Checkpoint lost parents: 337 diff changeset	235 }
345 7416c3f9c321 Basic macro processor ported forward; added context break handling for local symbols lost@starbug parents: 344 diff changeset	236
7416c3f9c321 Basic macro processor ported forward; added context break handling for local symbols lost@starbug parents: 344 diff changeset	237 linedone:
7416c3f9c321 Basic macro processor ported forward; added context break handling for local symbols lost@starbug parents: 344 diff changeset	238 lw_free(sym);
340 1a6fc6ebb31c Checkpoint lost parents: 337 diff changeset	239
345 7416c3f9c321 Basic macro processor ported forward; added context break handling for local symbols lost@starbug parents: 344 diff changeset	240 if (!as -> skipcond && !as -> inmacro)
340 1a6fc6ebb31c Checkpoint lost parents: 337 diff changeset	241 {
345 7416c3f9c321 Basic macro processor ported forward; added context break handling for local symbols lost@starbug parents: 344 diff changeset	242 if (cl -> sym && cl -> symset == 0)
7416c3f9c321 Basic macro processor ported forward; added context break handling for local symbols lost@starbug parents: 344 diff changeset	243 {
7416c3f9c321 Basic macro processor ported forward; added context break handling for local symbols lost@starbug parents: 344 diff changeset	244 printf("Register symbol %s:", sym);
7416c3f9c321 Basic macro processor ported forward; added context break handling for local symbols lost@starbug parents: 344 diff changeset	245 lw_expr_print(cl -> addr);
7416c3f9c321 Basic macro processor ported forward; added context break handling for local symbols lost@starbug parents: 344 diff changeset	246 printf("\n");
7416c3f9c321 Basic macro processor ported forward; added context break handling for local symbols lost@starbug parents: 344 diff changeset	247
7416c3f9c321 Basic macro processor ported forward; added context break handling for local symbols lost@starbug parents: 344 diff changeset	248 // register symbol at line address
7416c3f9c321 Basic macro processor ported forward; added context break handling for local symbols lost@starbug parents: 344 diff changeset	249 if (!register_symbol(as, cl, cl -> sym, cl -> addr, symbol_flag_none))
7416c3f9c321 Basic macro processor ported forward; added context break handling for local symbols lost@starbug parents: 344 diff changeset	250 {
7416c3f9c321 Basic macro processor ported forward; added context break handling for local symbols lost@starbug parents: 344 diff changeset	251 // symbol error
7416c3f9c321 Basic macro processor ported forward; added context break handling for local symbols lost@starbug parents: 344 diff changeset	252 lwasm_register_error(as, cl, "Bad symbol '%s'", cl -> sym);
7416c3f9c321 Basic macro processor ported forward; added context break handling for local symbols lost@starbug parents: 344 diff changeset	253 }
7416c3f9c321 Basic macro processor ported forward; added context break handling for local symbols lost@starbug parents: 344 diff changeset	254 }
7416c3f9c321 Basic macro processor ported forward; added context break handling for local symbols lost@starbug parents: 344 diff changeset	255
342 7b4123dce741 Added basic symbol registration lost@starbug parents: 340 diff changeset	256 lw_expr_print(cl -> addr);
7b4123dce741 Added basic symbol registration lost@starbug parents: 340 diff changeset	257 printf("\n");
340 1a6fc6ebb31c Checkpoint lost parents: 337 diff changeset	258 }
1a6fc6ebb31c Checkpoint lost parents: 337 diff changeset	259
1a6fc6ebb31c Checkpoint lost parents: 337 diff changeset	260 nextline:
332 67224d8d1024 Basic input layer works lost parents: diff changeset	261 lw_free(line);
67224d8d1024 Basic input layer works lost parents: diff changeset	262 }
67224d8d1024 Basic input layer works lost parents: diff changeset	263 }

Mercurial > hg-old > index.cgi

annotate lwasm/pass1.c @ 345:7416c3f9c321