LWTools Old Repo: lwasm/parse.c annotate

annotate lwasm/parse.c @ 255:6363b9ebf825 2.x

Support files with line numbers in lwasm

author	lost
date	Sun, 20 Dec 2009 05:40:47 +0000
parents	c7a41b4c89b3
children	6d09310438a4

rev	line source
36 99e3b3310bac Added missing parse.c file to repository lost parents: diff changeset	1 /*
99e3b3310bac Added missing parse.c file to repository lost parents: diff changeset	2 parse.c
99e3b3310bac Added missing parse.c file to repository lost parents: diff changeset	3 Copyright © 2008 William Astle
99e3b3310bac Added missing parse.c file to repository lost parents: diff changeset	4
99e3b3310bac Added missing parse.c file to repository lost parents: diff changeset	5 This file is part of LWASM.
99e3b3310bac Added missing parse.c file to repository lost parents: diff changeset	6
99e3b3310bac Added missing parse.c file to repository lost parents: diff changeset	7 LWASM is free software: you can redistribute it and/or modify it under the
99e3b3310bac Added missing parse.c file to repository lost parents: diff changeset	8 terms of the GNU General Public License as published by the Free Software
99e3b3310bac Added missing parse.c file to repository lost parents: diff changeset	9 Foundation, either version 3 of the License, or (at your option) any later
99e3b3310bac Added missing parse.c file to repository lost parents: diff changeset	10 version.
99e3b3310bac Added missing parse.c file to repository lost parents: diff changeset	11
99e3b3310bac Added missing parse.c file to repository lost parents: diff changeset	12 This program is distributed in the hope that it will be useful, but WITHOUT
99e3b3310bac Added missing parse.c file to repository lost parents: diff changeset	13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
99e3b3310bac Added missing parse.c file to repository lost parents: diff changeset	14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
99e3b3310bac Added missing parse.c file to repository lost parents: diff changeset	15 more details.
99e3b3310bac Added missing parse.c file to repository lost parents: diff changeset	16
99e3b3310bac Added missing parse.c file to repository lost parents: diff changeset	17 You should have received a copy of the GNU General Public License along with
99e3b3310bac Added missing parse.c file to repository lost parents: diff changeset	18 this program. If not, see <http://www.gnu.org/licenses/>.
99e3b3310bac Added missing parse.c file to repository lost parents: diff changeset	19 */
99e3b3310bac Added missing parse.c file to repository lost parents: diff changeset	20
99e3b3310bac Added missing parse.c file to repository lost parents: diff changeset	21 /*
99e3b3310bac Added missing parse.c file to repository lost parents: diff changeset	22 Contains the general parser
99e3b3310bac Added missing parse.c file to repository lost parents: diff changeset	23 */
99e3b3310bac Added missing parse.c file to repository lost parents: diff changeset	24
99e3b3310bac Added missing parse.c file to repository lost parents: diff changeset	25 #define __parse_c_seen__
212 bae1e3ecdce1 More preparation for gnulib integration lost parents: 190 diff changeset	26 #include <config.h>
36 99e3b3310bac Added missing parse.c file to repository lost parents: diff changeset	27
99e3b3310bac Added missing parse.c file to repository lost parents: diff changeset	28 #include <ctype.h>
99e3b3310bac Added missing parse.c file to repository lost parents: diff changeset	29 #include <string.h>
99e3b3310bac Added missing parse.c file to repository lost parents: diff changeset	30
99e3b3310bac Added missing parse.c file to repository lost parents: diff changeset	31 #include "lwasm.h"
99e3b3310bac Added missing parse.c file to repository lost parents: diff changeset	32 #include "instab.h"
99e3b3310bac Added missing parse.c file to repository lost parents: diff changeset	33 #include "util.h"
99e3b3310bac Added missing parse.c file to repository lost parents: diff changeset	34
99e3b3310bac Added missing parse.c file to repository lost parents: diff changeset	35 // parse a line and despatch to the appropriate handlers for opcodes
99e3b3310bac Added missing parse.c file to repository lost parents: diff changeset	36 int lwasm_parse_line(asmstate_t as, lwasm_line_t l)
99e3b3310bac Added missing parse.c file to repository lost parents: diff changeset	37 {
99e3b3310bac Added missing parse.c file to repository lost parents: diff changeset	38 char p, p2;
99e3b3310bac Added missing parse.c file to repository lost parents: diff changeset	39 char *opc;
99e3b3310bac Added missing parse.c file to repository lost parents: diff changeset	40 int opnum;
44 2330b88f9600 Added simple output listing lost parents: 38 diff changeset	41 char *sym = NULL;
66 aa9d9fedfdf4 Redid lwasm_parse_line() to correct overly complex logic flaws lost parents: 64 diff changeset	42
aa9d9fedfdf4 Redid lwasm_parse_line() to correct overly complex logic flaws lost parents: 64 diff changeset	43 // if this was a bad op first pass (or otherwise a no-process line)
aa9d9fedfdf4 Redid lwasm_parse_line() to correct overly complex logic flaws lost parents: 64 diff changeset	44 // ignore it
aa9d9fedfdf4 Redid lwasm_parse_line() to correct overly complex logic flaws lost parents: 64 diff changeset	45 if (l -> badop)
aa9d9fedfdf4 Redid lwasm_parse_line() to correct overly complex logic flaws lost parents: 64 diff changeset	46 return;
36 99e3b3310bac Added missing parse.c file to repository lost parents: diff changeset	47
99e3b3310bac Added missing parse.c file to repository lost parents: diff changeset	48 p = l -> text;
101 f59c0916753d Fixed relative branches and PCR addressing to handle constant intra-section references properly lost parents: 99 diff changeset	49 l -> sect = as -> csect;
236 a58f49a77441 Added os9 target, pragma to control whether $ localizes a symbol, and fixed some condition nesting bugs lost parents: 230 diff changeset	50 l -> inmod = as -> inmod;
66 aa9d9fedfdf4 Redid lwasm_parse_line() to correct overly complex logic flaws lost parents: 64 diff changeset	51
aa9d9fedfdf4 Redid lwasm_parse_line() to correct overly complex logic flaws lost parents: 64 diff changeset	52 // blank lines are a no brainer
36 99e3b3310bac Added missing parse.c file to repository lost parents: diff changeset	53 if (!*p)
37 538e15927776 Added symbol handling to expression subsystem; adpated instruction handlers to the new scheme; misc fixes lost parents: 36 diff changeset	54 {
66 aa9d9fedfdf4 Redid lwasm_parse_line() to correct overly complex logic flaws lost parents: 64 diff changeset	55 as -> context = lwasm_next_context(as);
36 99e3b3310bac Added missing parse.c file to repository lost parents: diff changeset	56 return 0;
37 538e15927776 Added symbol handling to expression subsystem; adpated instruction handlers to the new scheme; misc fixes lost parents: 36 diff changeset	57 }
36 99e3b3310bac Added missing parse.c file to repository lost parents: diff changeset	58
52 b9856da2674a Added file inclusion lost parents: 44 diff changeset	59 // for output generation later but only on pass 1
66 aa9d9fedfdf4 Redid lwasm_parse_line() to correct overly complex logic flaws lost parents: 64 diff changeset	60 // also used by some pseudo ops on pass 2
52 b9856da2674a Added file inclusion lost parents: 44 diff changeset	61 if (as -> passnum == 1)
b9856da2674a Added file inclusion lost parents: 44 diff changeset	62 l -> codeaddr = as -> addr;
255 6363b9ebf825 Support files with line numbers in lwasm lost parents: 254 diff changeset	63
6363b9ebf825 Support files with line numbers in lwasm lost parents: 254 diff changeset	64 // check if there is a line number and ignore it if there is
6363b9ebf825 Support files with line numbers in lwasm lost parents: 254 diff changeset	65 if (isdigit(*p))
6363b9ebf825 Support files with line numbers in lwasm lost parents: 254 diff changeset	66 {
6363b9ebf825 Support files with line numbers in lwasm lost parents: 254 diff changeset	67 for (p2 = p; p2 && isdigit(p2); p2++)
6363b9ebf825 Support files with line numbers in lwasm lost parents: 254 diff changeset	68 /* do nothing */ ;
6363b9ebf825 Support files with line numbers in lwasm lost parents: 254 diff changeset	69
6363b9ebf825 Support files with line numbers in lwasm lost parents: 254 diff changeset	70 // we have a line number, skip it and the first
6363b9ebf825 Support files with line numbers in lwasm lost parents: 254 diff changeset	71 // whitespace character
6363b9ebf825 Support files with line numbers in lwasm lost parents: 254 diff changeset	72 if (!p2 \|\| isspace(p2))
6363b9ebf825 Support files with line numbers in lwasm lost parents: 254 diff changeset	73 p = p2 + 1;
6363b9ebf825 Support files with line numbers in lwasm lost parents: 254 diff changeset	74 }
44 2330b88f9600 Added simple output listing lost parents: 38 diff changeset	75
66 aa9d9fedfdf4 Redid lwasm_parse_line() to correct overly complex logic flaws lost parents: 64 diff changeset	76 // if it's a comment, return (this doesn't cause a context change)
aa9d9fedfdf4 Redid lwasm_parse_line() to correct overly complex logic flaws lost parents: 64 diff changeset	77 if (p == '' \|\| *p == ';')
aa9d9fedfdf4 Redid lwasm_parse_line() to correct overly complex logic flaws lost parents: 64 diff changeset	78 return;
aa9d9fedfdf4 Redid lwasm_parse_line() to correct overly complex logic flaws lost parents: 64 diff changeset	79
169 99300be2d3bd Allow lines starting with # to be ignored lost parents: 157 diff changeset	80 // if we have C pre-processor directives/output, ignore it
99300be2d3bd Allow lines starting with # to be ignored lost parents: 157 diff changeset	81 if (*p == '#')
99300be2d3bd Allow lines starting with # to be ignored lost parents: 157 diff changeset	82 return;
99300be2d3bd Allow lines starting with # to be ignored lost parents: 157 diff changeset	83
66 aa9d9fedfdf4 Redid lwasm_parse_line() to correct overly complex logic flaws lost parents: 64 diff changeset	84 // if we start with a non-space character, it's a symbol
244 c8bcc396ec59 Allow symbols to appear after whitespace when terminated by : lost parents: 236 diff changeset	85 symbolagain:
66 aa9d9fedfdf4 Redid lwasm_parse_line() to correct overly complex logic flaws lost parents: 64 diff changeset	86 if (!isspace(*p))
36 99e3b3310bac Added missing parse.c file to repository lost parents: diff changeset	87 {
253 c537a3a723fc Fixed obscure comment detection bug lost parents: 250 diff changeset	88 // if it starts with a comment character, it's not a symbol
c537a3a723fc Fixed obscure comment detection bug lost parents: 250 diff changeset	89 if (p == ';' \|\| p == '*')
c537a3a723fc Fixed obscure comment detection bug lost parents: 250 diff changeset	90 return;
c537a3a723fc Fixed obscure comment detection bug lost parents: 250 diff changeset	91
36 99e3b3310bac Added missing parse.c file to repository lost parents: diff changeset	92 // we have a symbol specified here
66 aa9d9fedfdf4 Redid lwasm_parse_line() to correct overly complex logic flaws lost parents: 64 diff changeset	93 // parse it out and record it for later use
157 745721e13970 allow : after symbol at line start lost parents: 151 diff changeset	94 for (p2 = p; p2 && !isspace(p2) && *p2 != ':'; p2++)
37 538e15927776 Added symbol handling to expression subsystem; adpated instruction handlers to the new scheme; misc fixes lost parents: 36 diff changeset	95 /* do nothing */ ;
538e15927776 Added symbol handling to expression subsystem; adpated instruction handlers to the new scheme; misc fixes lost parents: 36 diff changeset	96
538e15927776 Added symbol handling to expression subsystem; adpated instruction handlers to the new scheme; misc fixes lost parents: 36 diff changeset	97 sym = lwasm_alloc((p2 - p) + 1);
538e15927776 Added symbol handling to expression subsystem; adpated instruction handlers to the new scheme; misc fixes lost parents: 36 diff changeset	98 sym[p2 - p] = '\0';
538e15927776 Added symbol handling to expression subsystem; adpated instruction handlers to the new scheme; misc fixes lost parents: 36 diff changeset	99 memcpy(sym, p, p2 - p);
538e15927776 Added symbol handling to expression subsystem; adpated instruction handlers to the new scheme; misc fixes lost parents: 36 diff changeset	100
44 2330b88f9600 Added simple output listing lost parents: 38 diff changeset	101 p = p2;
157 745721e13970 allow : after symbol at line start lost parents: 151 diff changeset	102 if (!*sym)
745721e13970 allow : after symbol at line start lost parents: 151 diff changeset	103 {
745721e13970 allow : after symbol at line start lost parents: 151 diff changeset	104 register_error(as, l, 1, "Invalid symbol");
745721e13970 allow : after symbol at line start lost parents: 151 diff changeset	105 lwasm_free(sym);
745721e13970 allow : after symbol at line start lost parents: 151 diff changeset	106 sym = NULL;
745721e13970 allow : after symbol at line start lost parents: 151 diff changeset	107 }
745721e13970 allow : after symbol at line start lost parents: 151 diff changeset	108 if (*p == ':')
745721e13970 allow : after symbol at line start lost parents: 151 diff changeset	109 p++;
37 538e15927776 Added symbol handling to expression subsystem; adpated instruction handlers to the new scheme; misc fixes lost parents: 36 diff changeset	110 }
66 aa9d9fedfdf4 Redid lwasm_parse_line() to correct overly complex logic flaws lost parents: 64 diff changeset	111 l -> sym = sym;
36 99e3b3310bac Added missing parse.c file to repository lost parents: diff changeset	112
66 aa9d9fedfdf4 Redid lwasm_parse_line() to correct overly complex logic flaws lost parents: 64 diff changeset	113 // now skip any whitespace to find the opcode
36 99e3b3310bac Added missing parse.c file to repository lost parents: diff changeset	114 while (p && isspace(p))
99e3b3310bac Added missing parse.c file to repository lost parents: diff changeset	115 p++;
99e3b3310bac Added missing parse.c file to repository lost parents: diff changeset	116
66 aa9d9fedfdf4 Redid lwasm_parse_line() to correct overly complex logic flaws lost parents: 64 diff changeset	117 // is the line blank?
aa9d9fedfdf4 Redid lwasm_parse_line() to correct overly complex logic flaws lost parents: 64 diff changeset	118 if (!*p && !sym)
37 538e15927776 Added symbol handling to expression subsystem; adpated instruction handlers to the new scheme; misc fixes lost parents: 36 diff changeset	119 {
66 aa9d9fedfdf4 Redid lwasm_parse_line() to correct overly complex logic flaws lost parents: 64 diff changeset	120 // nothing but white space is a context break
aa9d9fedfdf4 Redid lwasm_parse_line() to correct overly complex logic flaws lost parents: 64 diff changeset	121 as -> context = lwasm_next_context(as);
aa9d9fedfdf4 Redid lwasm_parse_line() to correct overly complex logic flaws lost parents: 64 diff changeset	122 return;
37 538e15927776 Added symbol handling to expression subsystem; adpated instruction handlers to the new scheme; misc fixes lost parents: 36 diff changeset	123 }
36 99e3b3310bac Added missing parse.c file to repository lost parents: diff changeset	124
99e3b3310bac Added missing parse.c file to repository lost parents: diff changeset	125 // parse the opcode
99e3b3310bac Added missing parse.c file to repository lost parents: diff changeset	126 for (p2 = p; p2 && !isspace(p2); p2++)
99e3b3310bac Added missing parse.c file to repository lost parents: diff changeset	127 /* do nothing */ ;
99e3b3310bac Added missing parse.c file to repository lost parents: diff changeset	128
99e3b3310bac Added missing parse.c file to repository lost parents: diff changeset	129 opc = lwasm_alloc((p2 - p) + 1);
99e3b3310bac Added missing parse.c file to repository lost parents: diff changeset	130 memcpy(opc, p, p2 - p);
99e3b3310bac Added missing parse.c file to repository lost parents: diff changeset	131 opc[p2 - p] = '\0';
99e3b3310bac Added missing parse.c file to repository lost parents: diff changeset	132
244 c8bcc396ec59 Allow symbols to appear after whitespace when terminated by : lost parents: 236 diff changeset	133 if (strchr(opc, ':'))
c8bcc396ec59 Allow symbols to appear after whitespace when terminated by : lost parents: 236 diff changeset	134 {
c8bcc396ec59 Allow symbols to appear after whitespace when terminated by : lost parents: 236 diff changeset	135 lwasm_free(opc);
c8bcc396ec59 Allow symbols to appear after whitespace when terminated by : lost parents: 236 diff changeset	136 goto symbolagain;
c8bcc396ec59 Allow symbols to appear after whitespace when terminated by : lost parents: 236 diff changeset	137 }
c8bcc396ec59 Allow symbols to appear after whitespace when terminated by : lost parents: 236 diff changeset	138
190 563adfccb645 Added 'sym=expr' opcode handling lost parents: 169 diff changeset	139 l -> forceglobal = 0;
563adfccb645 Added 'sym=expr' opcode handling lost parents: 169 diff changeset	140 // if the opcode contains an =, treat it as "symbol = expr"
563adfccb645 Added 'sym=expr' opcode handling lost parents: 169 diff changeset	141 if (!sym && strchr(opc, '='))
563adfccb645 Added 'sym=expr' opcode handling lost parents: 169 diff changeset	142 {
563adfccb645 Added 'sym=expr' opcode handling lost parents: 169 diff changeset	143 for (p2 = opc; p2 && p2 != '='; p2++)
563adfccb645 Added 'sym=expr' opcode handling lost parents: 169 diff changeset	144 /* do nothing */ ;
563adfccb645 Added 'sym=expr' opcode handling lost parents: 169 diff changeset	145 sym = lwasm_alloc((p2 - opc) + 1);
563adfccb645 Added 'sym=expr' opcode handling lost parents: 169 diff changeset	146 memcpy(sym, opc, p2 - opc);
563adfccb645 Added 'sym=expr' opcode handling lost parents: 169 diff changeset	147 sym[p2 - opc] = '\0';
563adfccb645 Added 'sym=expr' opcode handling lost parents: 169 diff changeset	148 l -> sym = sym;
563adfccb645 Added 'sym=expr' opcode handling lost parents: 169 diff changeset	149
563adfccb645 Added 'sym=expr' opcode handling lost parents: 169 diff changeset	150 p2 = p + (p2 - opc) + 1;
563adfccb645 Added 'sym=expr' opcode handling lost parents: 169 diff changeset	151 // p2++;
563adfccb645 Added 'sym=expr' opcode handling lost parents: 169 diff changeset	152 opc[0] = '=';
563adfccb645 Added 'sym=expr' opcode handling lost parents: 169 diff changeset	153 opc[1] = '\0';
563adfccb645 Added 'sym=expr' opcode handling lost parents: 169 diff changeset	154 debug_message(2, "Found opcode = with symbol %s and operand %s", sym, p2);
563adfccb645 Added 'sym=expr' opcode handling lost parents: 169 diff changeset	155 l -> forceglobal = 1;
563adfccb645 Added 'sym=expr' opcode handling lost parents: 169 diff changeset	156 }
563adfccb645 Added 'sym=expr' opcode handling lost parents: 169 diff changeset	157
38 9bd584bb6296 Added debugging message infrastructure lost parents: 37 diff changeset	158 debug_message(2, "Found operation code: '%s'", opc);
9bd584bb6296 Added debugging message infrastructure lost parents: 37 diff changeset	159
36 99e3b3310bac Added missing parse.c file to repository lost parents: diff changeset	160 // skip intervening whitespace if present
99e3b3310bac Added missing parse.c file to repository lost parents: diff changeset	161 while (p2 && isspace(p2))
99e3b3310bac Added missing parse.c file to repository lost parents: diff changeset	162 p2++;
99e3b3310bac Added missing parse.c file to repository lost parents: diff changeset	163
99e3b3310bac Added missing parse.c file to repository lost parents: diff changeset	164 // look up instruction in insn table
99e3b3310bac Added missing parse.c file to repository lost parents: diff changeset	165 for (opnum = 0; instab[opnum].opcode; opnum++)
99e3b3310bac Added missing parse.c file to repository lost parents: diff changeset	166 {
99e3b3310bac Added missing parse.c file to repository lost parents: diff changeset	167 if (!strcasecmp(instab[opnum].opcode, opc))
99e3b3310bac Added missing parse.c file to repository lost parents: diff changeset	168 break;
99e3b3310bac Added missing parse.c file to repository lost parents: diff changeset	169 }
99e3b3310bac Added missing parse.c file to repository lost parents: diff changeset	170
66 aa9d9fedfdf4 Redid lwasm_parse_line() to correct overly complex logic flaws lost parents: 64 diff changeset	171 // if we found no operation, check if we had a comment
aa9d9fedfdf4 Redid lwasm_parse_line() to correct overly complex logic flaws lost parents: 64 diff changeset	172 // the reason this check is here is to allow for "private"
aa9d9fedfdf4 Redid lwasm_parse_line() to correct overly complex logic flaws lost parents: 64 diff changeset	173 // operation codes like "*pragma" which will be ignored by
aa9d9fedfdf4 Redid lwasm_parse_line() to correct overly complex logic flaws lost parents: 64 diff changeset	174 // other assemblers
68 cef25b0088e6 Fixed some problems detected by valgrind and testing lost parents: 66 diff changeset	175 // also skip empty ops
66 aa9d9fedfdf4 Redid lwasm_parse_line() to correct overly complex logic flaws lost parents: 64 diff changeset	176 if (!(instab[opnum].opcode))
aa9d9fedfdf4 Redid lwasm_parse_line() to correct overly complex logic flaws lost parents: 64 diff changeset	177 {
68 cef25b0088e6 Fixed some problems detected by valgrind and testing lost parents: 66 diff changeset	178 if (opc == '' \|\| opc == ';' \|\| !opc)
66 aa9d9fedfdf4 Redid lwasm_parse_line() to correct overly complex logic flaws lost parents: 64 diff changeset	179 goto done_line;
aa9d9fedfdf4 Redid lwasm_parse_line() to correct overly complex logic flaws lost parents: 64 diff changeset	180 }
aa9d9fedfdf4 Redid lwasm_parse_line() to correct overly complex logic flaws lost parents: 64 diff changeset	181
aa9d9fedfdf4 Redid lwasm_parse_line() to correct overly complex logic flaws lost parents: 64 diff changeset	182 // now we have the opcode and the symbol, we can decide if we're
aa9d9fedfdf4 Redid lwasm_parse_line() to correct overly complex logic flaws lost parents: 64 diff changeset	183 // actually going to do anything with this line
aa9d9fedfdf4 Redid lwasm_parse_line() to correct overly complex logic flaws lost parents: 64 diff changeset	184
aa9d9fedfdf4 Redid lwasm_parse_line() to correct overly complex logic flaws lost parents: 64 diff changeset	185 // we will NOT call the function if any of the following are true:
aa9d9fedfdf4 Redid lwasm_parse_line() to correct overly complex logic flaws lost parents: 64 diff changeset	186
aa9d9fedfdf4 Redid lwasm_parse_line() to correct overly complex logic flaws lost parents: 64 diff changeset	187 // - we are skipping a condition and the operation code is not a conditional
aa9d9fedfdf4 Redid lwasm_parse_line() to correct overly complex logic flaws lost parents: 64 diff changeset	188 // - we are defining a macro and the operation code is not ENDM
aa9d9fedfdf4 Redid lwasm_parse_line() to correct overly complex logic flaws lost parents: 64 diff changeset	189
aa9d9fedfdf4 Redid lwasm_parse_line() to correct overly complex logic flaws lost parents: 64 diff changeset	190 // we will call the function in any other circumstance
aa9d9fedfdf4 Redid lwasm_parse_line() to correct overly complex logic flaws lost parents: 64 diff changeset	191
aa9d9fedfdf4 Redid lwasm_parse_line() to correct overly complex logic flaws lost parents: 64 diff changeset	192 // first condition above
57 035b95a3690f Added conditional assembly and macros lost parents: 52 diff changeset	193 if (as -> inmacro && instab[opnum].endm == 0)
035b95a3690f Added conditional assembly and macros lost parents: 52 diff changeset	194 {
035b95a3690f Added conditional assembly and macros lost parents: 52 diff changeset	195 add_macro_line(as, l -> text);
66 aa9d9fedfdf4 Redid lwasm_parse_line() to correct overly complex logic flaws lost parents: 64 diff changeset	196 goto done_line;
57 035b95a3690f Added conditional assembly and macros lost parents: 52 diff changeset	197 }
035b95a3690f Added conditional assembly and macros lost parents: 52 diff changeset	198
66 aa9d9fedfdf4 Redid lwasm_parse_line() to correct overly complex logic flaws lost parents: 64 diff changeset	199 // second condition above
aa9d9fedfdf4 Redid lwasm_parse_line() to correct overly complex logic flaws lost parents: 64 diff changeset	200 if (as -> skipcond && instab[opnum].iscond == 0)
aa9d9fedfdf4 Redid lwasm_parse_line() to correct overly complex logic flaws lost parents: 64 diff changeset	201 goto done_line;
aa9d9fedfdf4 Redid lwasm_parse_line() to correct overly complex logic flaws lost parents: 64 diff changeset	202
254 c7a41b4c89b3 Added struct support to LWASM lost parents: 253 diff changeset	203 if (as -> instruct && as -> passnum == 1)
c7a41b4c89b3 Added struct support to LWASM lost parents: 253 diff changeset	204 {
c7a41b4c89b3 Added struct support to LWASM lost parents: 253 diff changeset	205 structtab_t *s = NULL;
c7a41b4c89b3 Added struct support to LWASM lost parents: 253 diff changeset	206 struct struct_sym_e e, e2;
c7a41b4c89b3 Added struct support to LWASM lost parents: 253 diff changeset	207
c7a41b4c89b3 Added struct support to LWASM lost parents: 253 diff changeset	208 // look for a structure if not an acceptable opcode
c7a41b4c89b3 Added struct support to LWASM lost parents: 253 diff changeset	209 if (!instab[opnum].opcode)
c7a41b4c89b3 Added struct support to LWASM lost parents: 253 diff changeset	210 {
c7a41b4c89b3 Added struct support to LWASM lost parents: 253 diff changeset	211 for (s = as -> structs; s; s = s -> next)
c7a41b4c89b3 Added struct support to LWASM lost parents: 253 diff changeset	212 {
c7a41b4c89b3 Added struct support to LWASM lost parents: 253 diff changeset	213 if (s == as -> cstruct)
c7a41b4c89b3 Added struct support to LWASM lost parents: 253 diff changeset	214 continue;
c7a41b4c89b3 Added struct support to LWASM lost parents: 253 diff changeset	215 if (!strcmp(opc, s -> name))
c7a41b4c89b3 Added struct support to LWASM lost parents: 253 diff changeset	216 goto isok;
c7a41b4c89b3 Added struct support to LWASM lost parents: 253 diff changeset	217 }
c7a41b4c89b3 Added struct support to LWASM lost parents: 253 diff changeset	218 }
c7a41b4c89b3 Added struct support to LWASM lost parents: 253 diff changeset	219 // check for a "reservation opcode"
c7a41b4c89b3 Added struct support to LWASM lost parents: 253 diff changeset	220 if (instab[opnum].opcode && instab[opnum].isreserve)
c7a41b4c89b3 Added struct support to LWASM lost parents: 253 diff changeset	221 {
c7a41b4c89b3 Added struct support to LWASM lost parents: 253 diff changeset	222 (instab[opnum].fn)(as, l, &p2, opnum);
c7a41b4c89b3 Added struct support to LWASM lost parents: 253 diff changeset	223
c7a41b4c89b3 Added struct support to LWASM lost parents: 253 diff changeset	224 // if we didn't end on a "space" character or EOL, throw error
c7a41b4c89b3 Added struct support to LWASM lost parents: 253 diff changeset	225 if (p2 && p2 && !isspace(p2) && !(l -> err) && as -> passnum == 1)
c7a41b4c89b3 Added struct support to LWASM lost parents: 253 diff changeset	226 register_error(as, l, 1, "Bad operand: %s (%d)", p2, as -> passnum);
c7a41b4c89b3 Added struct support to LWASM lost parents: 253 diff changeset	227
c7a41b4c89b3 Added struct support to LWASM lost parents: 253 diff changeset	228 if (as -> instruct == 0)
c7a41b4c89b3 Added struct support to LWASM lost parents: 253 diff changeset	229 goto done_line;
c7a41b4c89b3 Added struct support to LWASM lost parents: 253 diff changeset	230
c7a41b4c89b3 Added struct support to LWASM lost parents: 253 diff changeset	231 goto isok;
c7a41b4c89b3 Added struct support to LWASM lost parents: 253 diff changeset	232 }
c7a41b4c89b3 Added struct support to LWASM lost parents: 253 diff changeset	233 // carp if not valid
c7a41b4c89b3 Added struct support to LWASM lost parents: 253 diff changeset	234 register_error(as, l, 1, "Only other structs and rmb allowed in struct");
c7a41b4c89b3 Added struct support to LWASM lost parents: 253 diff changeset	235 l -> badop = 1;
c7a41b4c89b3 Added struct support to LWASM lost parents: 253 diff changeset	236 goto done_line;
c7a41b4c89b3 Added struct support to LWASM lost parents: 253 diff changeset	237
c7a41b4c89b3 Added struct support to LWASM lost parents: 253 diff changeset	238 isok:
c7a41b4c89b3 Added struct support to LWASM lost parents: 253 diff changeset	239 for (e2 = as -> cstruct -> fields; e2 && e2 -> next; e2 = e2 -> next)
c7a41b4c89b3 Added struct support to LWASM lost parents: 253 diff changeset	240 /* do nothing */ ;
c7a41b4c89b3 Added struct support to LWASM lost parents: 253 diff changeset	241 e = lwasm_alloc(sizeof(struct struct_sym_e));
c7a41b4c89b3 Added struct support to LWASM lost parents: 253 diff changeset	242 e -> next = NULL;
c7a41b4c89b3 Added struct support to LWASM lost parents: 253 diff changeset	243 e -> substruct = s;
c7a41b4c89b3 Added struct support to LWASM lost parents: 253 diff changeset	244 if (sym)
c7a41b4c89b3 Added struct support to LWASM lost parents: 253 diff changeset	245 e -> name = lwasm_strdup(sym);
c7a41b4c89b3 Added struct support to LWASM lost parents: 253 diff changeset	246 else
c7a41b4c89b3 Added struct support to LWASM lost parents: 253 diff changeset	247 e -> name = NULL;
c7a41b4c89b3 Added struct support to LWASM lost parents: 253 diff changeset	248 if (s)
c7a41b4c89b3 Added struct support to LWASM lost parents: 253 diff changeset	249 e -> size = s -> size;
c7a41b4c89b3 Added struct support to LWASM lost parents: 253 diff changeset	250 else
c7a41b4c89b3 Added struct support to LWASM lost parents: 253 diff changeset	251 e -> size = l -> nocodelen;
c7a41b4c89b3 Added struct support to LWASM lost parents: 253 diff changeset	252 if (e2)
c7a41b4c89b3 Added struct support to LWASM lost parents: 253 diff changeset	253 e2 -> next = e;
c7a41b4c89b3 Added struct support to LWASM lost parents: 253 diff changeset	254 else
c7a41b4c89b3 Added struct support to LWASM lost parents: 253 diff changeset	255 as -> cstruct -> fields = e;
c7a41b4c89b3 Added struct support to LWASM lost parents: 253 diff changeset	256 as -> cstruct -> size += e -> size;
c7a41b4c89b3 Added struct support to LWASM lost parents: 253 diff changeset	257 }
c7a41b4c89b3 Added struct support to LWASM lost parents: 253 diff changeset	258
66 aa9d9fedfdf4 Redid lwasm_parse_line() to correct overly complex logic flaws lost parents: 64 diff changeset	259 // we've registered the symbol as needed
aa9d9fedfdf4 Redid lwasm_parse_line() to correct overly complex logic flaws lost parents: 64 diff changeset	260 // now we need to check for a macro call IFF we don't collide with
aa9d9fedfdf4 Redid lwasm_parse_line() to correct overly complex logic flaws lost parents: 64 diff changeset	261 // an operation code; otherwise, call the operation function
aa9d9fedfdf4 Redid lwasm_parse_line() to correct overly complex logic flaws lost parents: 64 diff changeset	262 if (instab[opnum].opcode)
36 99e3b3310bac Added missing parse.c file to repository lost parents: diff changeset	263 {
230 0df2a39a268c Added --6809/--6309 switches and some cleanups in error reporting lost parents: 223 diff changeset	264 if (instab[opnum].fn && !(as -> no6309 && instab[opnum].is6309))
66 aa9d9fedfdf4 Redid lwasm_parse_line() to correct overly complex logic flaws lost parents: 64 diff changeset	265 {
aa9d9fedfdf4 Redid lwasm_parse_line() to correct overly complex logic flaws lost parents: 64 diff changeset	266 (instab[opnum].fn)(as, l, &p2, opnum);
223 436b36214e35 Fixed lack of error when there are extraneous characters at the end of the operand. lost parents: 212 diff changeset	267
436b36214e35 Fixed lack of error when there are extraneous characters at the end of the operand. lost parents: 212 diff changeset	268 // if we didn't end on a "space" character or EOL, throw error
250 0986834ec7d3 Added no-op .bank pseudo-op to support compiling gcc6809 lost parents: 244 diff changeset	269 if (p2 && p2 && !isspace(p2) && !(l -> err) && as -> passnum == 1)
236 a58f49a77441 Added os9 target, pragma to control whether $ localizes a symbol, and fixed some condition nesting bugs lost parents: 230 diff changeset	270 register_error(as, l, 1, "Bad operand: %s (%d)", p2, as -> passnum);
66 aa9d9fedfdf4 Redid lwasm_parse_line() to correct overly complex logic flaws lost parents: 64 diff changeset	271 }
aa9d9fedfdf4 Redid lwasm_parse_line() to correct overly complex logic flaws lost parents: 64 diff changeset	272 else
aa9d9fedfdf4 Redid lwasm_parse_line() to correct overly complex logic flaws lost parents: 64 diff changeset	273 {
aa9d9fedfdf4 Redid lwasm_parse_line() to correct overly complex logic flaws lost parents: 64 diff changeset	274 // carp about unimplemented operation
230 0df2a39a268c Added --6809/--6309 switches and some cleanups in error reporting lost parents: 223 diff changeset	275 if (instab[opnum].is6309)
0df2a39a268c Added --6809/--6309 switches and some cleanups in error reporting lost parents: 223 diff changeset	276 register_error(as, l, 1, "Use of 6309 operation code: %s", opc);
0df2a39a268c Added --6809/--6309 switches and some cleanups in error reporting lost parents: 223 diff changeset	277 else
0df2a39a268c Added --6809/--6309 switches and some cleanups in error reporting lost parents: 223 diff changeset	278 register_error(as, l, 1, "Unimplemented operation code: %s", opc);
66 aa9d9fedfdf4 Redid lwasm_parse_line() to correct overly complex logic flaws lost parents: 64 diff changeset	279 }
36 99e3b3310bac Added missing parse.c file to repository lost parents: diff changeset	280 }
66 aa9d9fedfdf4 Redid lwasm_parse_line() to correct overly complex logic flaws lost parents: 64 diff changeset	281 else
aa9d9fedfdf4 Redid lwasm_parse_line() to correct overly complex logic flaws lost parents: 64 diff changeset	282 {
aa9d9fedfdf4 Redid lwasm_parse_line() to correct overly complex logic flaws lost parents: 64 diff changeset	283 if (expand_macro(as, l, &p2, opc) == 0)
aa9d9fedfdf4 Redid lwasm_parse_line() to correct overly complex logic flaws lost parents: 64 diff changeset	284 goto done_line;
36 99e3b3310bac Added missing parse.c file to repository lost parents: diff changeset	285
254 c7a41b4c89b3 Added struct support to LWASM lost parents: 253 diff changeset	286 if (expand_struct(as, l, &p2, opc) == 0)
c7a41b4c89b3 Added struct support to LWASM lost parents: 253 diff changeset	287 goto done_line;
c7a41b4c89b3 Added struct support to LWASM lost parents: 253 diff changeset	288
66 aa9d9fedfdf4 Redid lwasm_parse_line() to correct overly complex logic flaws lost parents: 64 diff changeset	289 // carp about an unknown operation code and note that fact for
aa9d9fedfdf4 Redid lwasm_parse_line() to correct overly complex logic flaws lost parents: 64 diff changeset	290 // pass 2 in case a macro appears later with the same name!
aa9d9fedfdf4 Redid lwasm_parse_line() to correct overly complex logic flaws lost parents: 64 diff changeset	291 register_error(as, l, 1, "Uknown operation code: %s", opc);
aa9d9fedfdf4 Redid lwasm_parse_line() to correct overly complex logic flaws lost parents: 64 diff changeset	292 l -> badop = 1;
aa9d9fedfdf4 Redid lwasm_parse_line() to correct overly complex logic flaws lost parents: 64 diff changeset	293 }
57 035b95a3690f Added conditional assembly and macros lost parents: 52 diff changeset	294
035b95a3690f Added conditional assembly and macros lost parents: 52 diff changeset	295 done_line:
68 cef25b0088e6 Fixed some problems detected by valgrind and testing lost parents: 66 diff changeset	296 if (!(as -> skipcond \|\| as -> inmacro))
cef25b0088e6 Fixed some problems detected by valgrind and testing lost parents: 66 diff changeset	297 {
cef25b0088e6 Fixed some problems detected by valgrind and testing lost parents: 66 diff changeset	298 // register symbol if the operation didn't
254 c7a41b4c89b3 Added struct support to LWASM lost parents: 253 diff changeset	299 if (sym && instab[opnum].setsym == 0 && as -> instruct == 0)
68 cef25b0088e6 Fixed some problems detected by valgrind and testing lost parents: 66 diff changeset	300 {
cef25b0088e6 Fixed some problems detected by valgrind and testing lost parents: 66 diff changeset	301 if (as -> passnum == 1)
cef25b0088e6 Fixed some problems detected by valgrind and testing lost parents: 66 diff changeset	302 {
71 90a5657d5408 Fixed problem with symbols being registered with the address of the NEXT instruction lost parents: 68 diff changeset	303 debug_message(1, "Registering symbol '%s' at %04X", sym, l -> codeaddr);
90a5657d5408 Fixed problem with symbols being registered with the address of the NEXT instruction lost parents: 68 diff changeset	304 if (lwasm_register_symbol(as, l, sym, l -> codeaddr, SYMBOL_NORM) < 0)
68 cef25b0088e6 Fixed some problems detected by valgrind and testing lost parents: 66 diff changeset	305 l -> sym = NULL;
cef25b0088e6 Fixed some problems detected by valgrind and testing lost parents: 66 diff changeset	306 else
cef25b0088e6 Fixed some problems detected by valgrind and testing lost parents: 66 diff changeset	307 l -> addrset = 1;
cef25b0088e6 Fixed some problems detected by valgrind and testing lost parents: 66 diff changeset	308 }
cef25b0088e6 Fixed some problems detected by valgrind and testing lost parents: 66 diff changeset	309 }
cef25b0088e6 Fixed some problems detected by valgrind and testing lost parents: 66 diff changeset	310 }
99 3dcb12a6f4ff Fixed problem handling sections with options on pass 2 lost parents: 91 diff changeset	311
85 918be0c02239 Started adding object target output lost parents: 71 diff changeset	312 l -> sect = as -> csect;
91 718998b673ee Added incomplete references to object output and added support for section base terms in expression handler lost parents: 85 diff changeset	313 l -> context = as -> context;
85 918be0c02239 Started adding object target output lost parents: 71 diff changeset	314
36 99e3b3310bac Added missing parse.c file to repository lost parents: diff changeset	315 lwasm_free(opc);
44 2330b88f9600 Added simple output listing lost parents: 38 diff changeset	316 if (sym)
2330b88f9600 Added simple output listing lost parents: 38 diff changeset	317 lwasm_free(sym);
36 99e3b3310bac Added missing parse.c file to repository lost parents: diff changeset	318 }

Mercurial > hg-old > index.cgi

annotate lwasm/parse.c @ 255:6363b9ebf825 2.x