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Updated x16/include .a02 files to use 65C02 opcodes

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Curtis F Kaylor 2019-11-14 23:56:33 -05:00
parent 7f4e98826c
commit cf56e15c01
31 changed files with 2121 additions and 1923 deletions
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src/.vscode/ipch/771b4d3d25e434c7/C02.ipch vendored Normal file
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src/.vscode/ipch/771b4d3d25e434c7/mmap_address.bin vendored Normal file
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src/.vscode/launch.json vendored Normal file
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{
// Use IntelliSense to learn about possible attributes.
// Hover to view descriptions of existing attributes.
// For more information, visit: https://go.microsoft.com/fwlink/?linkid=830387
"version": "0.2.0",
"configurations": [
{
"name": "(Windows) Launch",
"type": "cppvsdbg",
"request": "launch",
"program": "${workspaceFolder}/c02.exe",
"args": [],
"stopAtEntry": false,
"cwd": "${workspaceFolder}",
"environment": [],
"externalConsole": true
}
]
}

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src/asm.c
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/*************************************
* C02 Assembly Language Routines *
*************************************/
#include <stdio.h>
#include <stdlib.h>
#include <ctype.h>
#include <string.h>
#include <errno.h>
#include "common.h"
#include "files.h"
#include "asm.h"
/* Process comment */
void prccmt(void) {
if (strlen(cmtasm)) { strcpy(asmcmt, ";"); strcat(asmcmt, cmtasm); }
else asmcmt[0] = 0;
setcmt("");
}
/* output a single line of assembly code */
void asmlin(char *opcode, char *oprnd) {
if (strlen(lblasm)) strcat(lblasm, LABSFX);
prccmt();
fprintf(outfil, ASMFMT, lblasm, opcode, oprnd, asmcmt);
if (debug) printf(ASMFMT, lblasm, opcode, oprnd, asmcmt);
lblasm[0] = 0;
}
/* output a single comment line */
void cmtlin(void) {
DEBUG("Writing Comment Line: %s\n", cmtasm)
fprintf(outfil, "; %s\n", cmtasm);
setcmt("");
}
/*************************************
* C02 Assembly Language Routines *
*************************************/
#include <stdio.h>
#include <stdlib.h>
#include <ctype.h>
#include <string.h>
#include <errno.h>
#include "common.h"
#include "files.h"
#include "asm.h"
/* Process comment */
void prccmt(void) {
if (strlen(cmtasm)) { strcpy(asmcmt, ";"); strcat(asmcmt, cmtasm); }
else asmcmt[0] = 0;
setcmt("");
}
/* output a single line of assembly code */
void asmlin(char *opcode, char *oprnd) {
if (strlen(lblasm)) strcat(lblasm, LABSFX);
prccmt();
fprintf(outfil, ASMFMT, lblasm, opcode, oprnd, asmcmt);
if (debug) printf(ASMFMT, lblasm, opcode, oprnd, asmcmt);
lblasm[0] = 0;
}
/* output a single comment line */
void cmtlin(void) {
DEBUG("Writing Comment Line: %s\n", cmtasm)
fprintf(outfil, "; %s\n", cmtasm);
setcmt("");
}

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src/asm.h
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/*************************************
* C02 Assembly Language Routines *
*************************************/
char lblasm[LBLLEN+2]; //Label to emit on next asm line
void asmlin(char *opcode, char *oprnd); //Output a line of assembly code
void cmtlin(); //Output a comment lines
void prccmt(); //Process comment
/*************************************
* C02 Assembly Language Routines *
*************************************/
char lblasm[LBLLEN+2]; //Label to emit on next asm line
void asmlin(char *opcode, char *oprnd); //Output a line of assembly code
void cmtlin(); //Output a comment lines
void prccmt(); //Process comment

430
src/c02.c
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@ -1,203 +1,227 @@
/**************************************************************
* C02 Compiler - (C) 2013 Curtis F Kaylor *
* *
* C02 is a simpified C-like language designed for the 6502 *
* *
* This Compiler generates crasm compatible assembly language *
* *
**************************************************************/
#include <stdio.h>
#include <stdlib.h>
#include <ctype.h>
#include <string.h>
#include <errno.h>
#include "common.h" //Common Code used by all Modules
#include "files.h" //Open and Close Files
#include "asm.h" //Write out Assembly Language
#include "parse.h" //General Code Parsing
#include "vars.h" //Variable Parsing, Lookup, and Allocation
#include "expr.h" //Expression Parsing
#include "label.h" //Label Parsing, Generation, and Lookup
#include "cond.h" //Conditional Parsing
#include "stmnt.h" //Statement Compiling Code
#include "dclrtn.h" //Statement Compiling Code
#include "include.h" //Include File Parsing
/* Initilize Compiler Variables */
void init(void) {
initim(); //Initialize Elapsed Time
DEBUG("Initializing Compiler Variables\n",0)
concnt = 0; //Number of Constants Defined
varcnt = 0; //Number of Variables in Table
lblcnt = 0; //Number of Labels in stack
padcnt = 0; //Number of Padding Bytes at End
curcol = 0; //Current Column in Source Code
curlin = 0; //Current Line in Source Code
alcvar = TRUE; //Allocate Variables Flag
inblck = FALSE; //Multiline Block Flag
infunc = FALSE; //Inside Function Definition
xstmnt[0] = 0; //Expected Statement
nxtwrd[0] = 0; //Next Word (from DEFINE lookup)
nxtptr = 0; //Pointer to next character in nxtwrd
vrwrtn = FALSE; //Variables Written Flag
rambas = 0; //RAM Base Address
wrtbas = 0; //Write Base Address
zpaddr = 0; //Current Zero-Page Address
invasc = FALSE; //Invert ASCII Flag
mskasc = FALSE; //Set High Bit Flag
fcase = FALSE; //First Case Statement Flag
wrtofs[0] = 0; //Write Offset
xsnvar[0] = 0; //Assigned X Variable Name
ysnvar[0] = 0; //Assigned Y Variable Name
subcnt = 0; //Include Subdirectories
strcpy(incdir, "../include/");
}
/* Reads and parses the next Word in Source File */
void pword(void) {
lsrtrn = FALSE; //Clear RETURN flag
getwrd();
DEBUG("Parsing Word '%s'\n", word)
if (xstmnt[0]) {
if (wordis(xstmnt)) xstmnt[0] = 0; //Clear xstmnt
else ERROR("Expected '%s' statement\n", xstmnt, EXIT_FAILURE)
}
if (!pmodfr() && !ptype(MTNONE)) pstmnt(); //Parse Statement
}
/* Process a directive */
void pdrctv(void) {
skpchr(); //skip '#'
CCMNT('#');
getwrd(); //read directive into word
DEBUG("Processing directive '%s'\n", word)
if (wordis("DEFINE")) pdefin(); //Parse Define
else if (wordis("INCLUDE")) pincfl(); //Parse Include File
else if (wordis("ERROR")) ERROR("Error \n", 0, EXIT_FAILURE)
else if (wordis("PRAGMA")) pprgma();
else ERROR("Illegal directive %s encountered\n", word, EXIT_FAILURE)
}
void prolog(void) {
DEBUG("Writing Assembly Prolog\n", 0)
asmlin(CPUOP,CPUARG);
setcmt("Program ");
addcmt(srcnam);
cmtlin();
}
void epilog(void) {
if (!vrwrtn) wvrtbl(); //Write Variable Table
if (padcnt) {
SCMNT("PADDING BYTES")
sprintf(word, "$%hhX", padcnt);
asmlin(STROP, word);
}
}
/* Compile Source Code*/
void compile(void) {
DEBUG("Starting Compilation\n", 0)
prolog();
phdrfl(); //Process Header File specified on Command Line
skpchr();
DEBUG("Parsing Code\n", 0)
while (TRUE) {
skpspc();
if (match(EOF)) break; //Stop Parsing (End of File)
else if (match('}')) endblk(TRUE); //End Multi-Line Program Block
else if (match('#')) pdrctv(); //Parse Directive
else if (match('/')) skpcmt(TRUE); //Skip Comment
else if (isalph()) pword(); //Parse Word
else ERROR("Unexpected character '%c'\n", nxtchr, EXIT_FAILURE)
}
epilog();
}
/* Display "Usage" text and exit*/
void usage(void) {
printf("Usage: c02 sourcefile.c02\n");
exit(EXIT_FAILURE);
}
/* Parse Command Line Option */
int popt(int arg, int argc, char *argv[]) {
char argstr[32]; //Argument String
char opt; //Option
char optarg[32]; //Option Argument
strncpy (argstr, argv[arg], 31);
if (strlen(argstr) != 2) ERROR("malformed option %s\n", argstr, EXIT_FAILURE)
opt = toupper(argstr[1]);
if (strchr("HS", opt)) {
if (++arg >= argc) ERROR("Option -%c requires an argument\n", opt, EXIT_FAILURE)
strncpy(optarg, argv[arg], 31);
}
DEBUG("Processing Command Line Option -%c\n", argstr[1])
switch (opt) {
case 'H':
strcpy(hdrnam, optarg);
DEBUG("Header Name set to '%s'\n", hdrnam)
break;
case 'S':
strcpy(subdir[subcnt], optarg);
DEBUG("subdir[%d] ", subcnt)
DEBUG("set to '%s'\n", subdir[subcnt])
subcnt++;
break;
default:
ERROR("Illegal option -%c\n", opt, EXIT_FAILURE)
}
return arg;
}
/* Parse Command Line Arguments *
* Sets: srcnam - Source File Name (from first arg) *
* outnam - Output File Name (from optional second arg) */
void pargs(int argc, char *argv[]) {
int arg;
srcnam[0] = 0;
outnam[0] = 0;
DEBUG("Parsing %d arguments\n", argc)
if (argc == 0) usage(); //at least one argument is required
for (arg = 1; arg<argc; arg++) {
DEBUG("Parsing argument %d\n", arg);
if (argv[arg][0] == '-') arg = popt(arg, argc, argv); //Process Command Line Option
else if (srcnam[0] == 0) strcpy(srcnam, argv[arg]); //set Source File Name to first arg
else if (outnam[0] == 0) strcpy(outnam, argv[arg]); //set Out File Name to second arg
else ERROR("Unexpected argument '%s'\n", argv[arg], EXIT_FAILURE)
}
if (srcnam[0]) DEBUG("srcnam set to '%s'\n", srcnam)
else ERROR("Error: Source file not specified\n", 0, EXIT_FAILURE)
if (outnam[0]) DEBUG("outnam set to '%s'\n", outnam)
}
int main(int argc, char *argv[]) {
debug = TRUE; //Output Debug Info
gencmt = TRUE; //Generate Assembly Language Comments
printf("C02 Compiler (C) 2012 Curtis F Kaylor\n" );
init(); //Initialize Global Variables
pargs(argc, argv); //Parse Command Line Arguments
opnsrc(); //Open Source File
opnout(); //Open Output File
opnlog(); //Open Log File
setsrc(); //Set Input to Source File
compile();
logstc();
logcon();
loglab();
clssrc(); //Close Source File
clsout(); //Close Output File
clslog(); //Close Log File
}
/**************************************************************
* C02 Compiler - (C) 2013 Curtis F Kaylor *
* *
* C02 is a simpified C-like language designed for the 6502 *
* *
* This Compiler generates crasm compatible assembly language *
* *
**************************************************************/
#include <stdio.h>
#include <stdlib.h>
#include <ctype.h>
#include <string.h>
#include <errno.h>
#include "common.h" //Common Code used by all Modules
#include "files.h" //Open and Close Files
#include "asm.h" //Write out Assembly Language
#include "parse.h" //General Code Parsing
#include "vars.h" //Variable Parsing, Lookup, and Allocation
#include "expr.h" //Expression Parsing
#include "label.h" //Label Parsing, Generation, and Lookup
#include "cond.h" //Conditional Parsing
#include "stmnt.h" //Statement Compiling Code
#include "dclrtn.h" //Statement Compiling Code
#include "include.h" //Include File Parsing
/* Initilize Compiler Variables */
void init(void) {
initim(); //Initialize Elapsed Time
DEBUG("Initializing Compiler Variables\n",0)
concnt = 0; //Number of Constants Defined
varcnt = 0; //Number of Variables in Table
lblcnt = 0; //Number of Labels in stack
padcnt = 0; //Number of Padding Bytes at End
curcol = 0; //Current Column in Source Code
curlin = 0; //Current Line in Source Code
alcvar = TRUE; //Allocate Variables Flag
inblck = FALSE; //Multiline Block Flag
infunc = FALSE; //Inside Function Definition
xstmnt[0] = 0; //Expected Statement
nxtwrd[0] = 0; //Next Word (from DEFINE lookup)
nxtptr = 0; //Pointer to next character in nxtwrd
vrwrtn = FALSE; //Variables Written Flag
rambas = 0; //RAM Base Address
wrtbas = 0; //Write Base Address
zpaddr = 0; //Current Zero-Page Address
invasc = FALSE; //Invert ASCII Flag
mskasc = FALSE; //Set High Bit Flag
fcase = FALSE; //First Case Statement Flag
wrtofs[0] = 0; //Write Offset
xsnvar[0] = 0; //Assigned X Variable Name
ysnvar[0] = 0; //Assigned Y Variable Name
subcnt = 0; //Include Subdirectories
strcpy(cputyp, CPUARG); //Set CPU Type to Default Value
strcpy(incdir, "../include/");
}
/* Parse Pointer Dereference Assignment */
void ppntr(void) {
lsrtrn = FALSE; //Clear RETURN flag
if (xstmnt[0]) ERROR("Expected '%s' statement\n", xstmnt, EXIT_FAILURE)
prcasp(';');
}
/* Reads and parses the next Word in Source File */
void pword(void) {
lsrtrn = FALSE; //Clear RETURN flag
getwrd();
DEBUG("Parsing Word '%s'\n", word)
if (xstmnt[0]) {
if (wordis(xstmnt)) xstmnt[0] = 0; //Clear xstmnt
else ERROR("Expected '%s' statement\n", xstmnt, EXIT_FAILURE)
}
if (!pmodfr() && !ptype(MTNONE)) pstmnt(); //Parse Statement
}
/* Process a directive */
void pdrctv(void) {
skpchr(); //skip '#'
CCMNT('#');
getwrd(); //read directive into word
DEBUG("Processing directive '%s'\n", word)
if (wordis("DEFINE")) pdefin(); //Parse Define
else if (wordis("INCLUDE")) pincfl(); //Parse Include File
else if (wordis("ERROR")) ERROR("Error \n", 0, EXIT_FAILURE)
else if (wordis("PRAGMA")) pprgma();
else ERROR("Illegal directive %s encountered\n", word, EXIT_FAILURE)
}
void prolog(void) {
DEBUG("Writing Assembly Prolog\n", 0)
asmlin(CPUOP,cputyp);
setcmt("Program ");
addcmt(srcnam);
cmtlin();
}
void epilog(void) {
if (!vrwrtn) wvrtbl(); //Write Variable Table
if (padcnt) {
SCMNT("PADDING BYTES")
sprintf(word, "$%hhX", padcnt);
asmlin(STROP, word);
}
}
/* Compile Source Code*/
void compile(void) {
DEBUG("Starting Compilation\n", 0)
prolog();
phdrfl(); //Process Header File specified on Command Line
skpchr();
DEBUG("Parsing Code\n", 0)
while (TRUE) {
skpspc();
if (match(EOF)) break; //Stop Parsing (End of File)
else if (match('}')) endblk(TRUE); //End Multi-Line Program Block
else if (match('#')) pdrctv(); //Parse Directive
else if (match('/')) skpcmt(TRUE); //Skip Comment
else if (match('*')) ppntr(); //Parse Pointer
else if (isalph()) pword(); //Parse Word
else ERROR("Unexpected character '%c'\n", nxtchr, EXIT_FAILURE)
}
epilog();
}
/* Display "Usage" text and exit*/
void usage(void) {
printf("Usage: c02 sourcefile.c02\n");
exit(EXIT_FAILURE);
}
/* Parse Command Line Option */
int popt(int arg, int argc, char *argv[]) {
char argstr[32]; //Argument String
char opt; //Option
char optarg[32]; //Option Argument
strncpy (argstr, argv[arg], 31);
if (strlen(argstr) != 2) ERROR("malformed option %s\n", argstr, EXIT_FAILURE)
opt = toupper(argstr[1]);
if (strchr("CHS", opt)) {
if (++arg >= argc) ERROR("Option -%c requires an argument\n", opt, EXIT_FAILURE)
strncpy(optarg, argv[arg], 31);
}
DEBUG("Processing Command Line Option -%c\n", argstr[1])
switch (opt) {
case 'C':
strcpy(cputyp, optarg);
DEBUG("CPU Type set to '%s'\n", cputyp)
break;
case 'H':
strcpy(hdrnam, optarg);
DEBUG("Header Name set to '%s'\n", hdrnam)
break;
case 'S':
strcpy(subdir[subcnt], optarg);
DEBUG("subdir[%d] ", subcnt)
DEBUG("set to '%s'\n", subdir[subcnt])
subcnt++;
break;
default:
ERROR("Illegal option -%c\n", opt, EXIT_FAILURE)
}
return arg;
}
/* Parse Command Line Arguments *
* Sets: srcnam - Source File Name (from first arg) *
* outnam - Output File Name (from optional second arg) */
void pargs(int argc, char *argv[]) {
int arg;
srcnam[0] = 0;
outnam[0] = 0;
DEBUG("Parsing %d arguments\n", argc)
if (argc == 0) usage(); //at least one argument is required
for (arg = 1; arg<argc; arg++) {
DEBUG("Parsing argument %d\n", arg);
if (argv[arg][0] == '-') arg = popt(arg, argc, argv); //Process Command Line Option
else if (srcnam[0] == 0) strcpy(srcnam, argv[arg]); //set Source File Name to first arg
else if (outnam[0] == 0) strcpy(outnam, argv[arg]); //set Out File Name to second arg
else ERROR("Unexpected argument '%s'\n", argv[arg], EXIT_FAILURE)
}
if (srcnam[0]) DEBUG("srcnam set to '%s'\n", srcnam)
else ERROR("Error: Source file not specified\n", 0, EXIT_FAILURE)
if (outnam[0]) DEBUG("outnam set to '%s'\n", outnam)
}
/* Validate CPU Type *
* Uses: cputype *
* Sets: cmos */
void chkcpu(void) {
if (strcmp(cputyp, "6502") == 0) cmos = FALSE;
else if (strcmp(cputyp, "65C02") == 0) cmos = TRUE;
else ERROR("Invalid CPU Type %s\n", cputyp, EXIT_FAILURE)
}
int main(int argc, char *argv[]) {
debug = TRUE; //Output Debug Info
gencmt = TRUE; //Generate Assembly Language Comments
printf("C02 Compiler (C) 2012 Curtis F Kaylor\n" );
init(); //Initialize Global Variables
pargs(argc, argv); //Parse Command Line Arguments
chkcpu(); //Validate CPU Type
opnsrc(); //Open Source File
opnout(); //Open Output File
opnlog(); //Open Log File
setsrc(); //Set Input to Source File
compile();
logstc();
logcon();
loglab();
clssrc(); //Close Source File
clsout(); //Close Output File
clslog(); //Close Log File
}

120
src/common.c
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@ -1,60 +1,60 @@
/*************************************
* C02 Common Definitions & Routines *
*************************************/
#include <stdio.h>
#include <stdlib.h>
#include <ctype.h>
#include <string.h>
#include <errno.h>
#include <time.h>
#include "common.h"
struct timespec curtim; //Current Time
/* Error - Print Input File name & position and exit */
void exterr(int errnum) {
fprintf(stderr, "Line %d Column %d of File %s\n", curlin, curcol, inpnam);
exit(errnum);
}
/* Error - print "Expected" error message *
and exit with general failure code *
Args: expected - Description of what was expected */
void expctd(char *expstr) {
fprintf(stderr, "Expected %s, but found '%c'\n", expstr, nxtchr);
exterr(EXIT_FAILURE);
}
/* Print current position in file */
void prtpos(void) { if (inpnam[0]) printf("(%s: %d,%d) ", inpnam, curlin, curcol); }
/* Initialize elapsed time counter */
void initim(void) {
timespec_get (&curtim, TIME_UTC);
bgntim = curtim.tv_sec;
}
/* Print elapsed time */
void prttim(void) {
timespec_get (&curtim, TIME_UTC);
printf("[%d", curtim.tv_sec - bgntim);
printf(".%06d]",curtim.tv_nsec/1000);
}
/* Set comment to string */
void setcmt(char *s) { strcpy(cmtasm, s); }
/* Append string to comment */
void addcmt(char *s) {
if (strlen(cmtasm)+strlen(s)<73) strcat(cmtasm, s);
}
/* Append character to comment */
void chrcmt(char c) {
if (strlen(cmtasm)>72) return;
if (cmtasm[0] == 0 && c == ' ') return;
int i = strlen(cmtasm);
cmtasm[i++] = c;
cmtasm[i] = 0;
}
/*************************************
* C02 Common Definitions & Routines *
*************************************/
#include <stdio.h>
#include <stdlib.h>
#include <ctype.h>
#include <string.h>
#include <errno.h>
#include <time.h>
#include "common.h"
struct timespec curtim; //Current Time
/* Error - Print Input File name & position and exit */
void exterr(int errnum) {
fprintf(stderr, "Line %d Column %d of File %s\n", curlin, curcol, inpnam);
exit(errnum);
}
/* Error - print "Expected" error message *
and exit with general failure code *
Args: expected - Description of what was expected */
void expctd(char *expstr) {
fprintf(stderr, "Expected %s, but found '%c'\n", expstr, nxtchr);
exterr(EXIT_FAILURE);
}
/* Print current position in file */
void prtpos(void) { if (inpnam[0]) printf("(%s: %d,%d) ", inpnam, curlin, curcol); }
/* Initialize elapsed time counter */
void initim(void) {
timespec_get (&curtim, TIME_UTC);
bgntim = curtim.tv_sec;
}
/* Print elapsed time */
void prttim(void) {
timespec_get (&curtim, TIME_UTC);
printf("[%d", curtim.tv_sec - bgntim);
printf(".%06d]",curtim.tv_nsec/1000);
}
/* Set comment to string */
void setcmt(char *s) { strcpy(cmtasm, s); }
/* Append string to comment */
void addcmt(char *s) {
if (strlen(cmtasm)+strlen(s)<73) strcat(cmtasm, s);
}
/* Append character to comment */
void chrcmt(char c) {
if (strlen(cmtasm)>72) return;
if (cmtasm[0] == 0 && c == ' ') return;
int i = strlen(cmtasm);
cmtasm[i++] = c;
cmtasm[i] = 0;
}

192
src/common.h
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@ -1,94 +1,98 @@
/*************************************
* C02 Common Definitions & Routines *
*************************************/
#define FNAMLEN 255 //Maximum File Name Length
#define LINELEN 255 //Maximum Input/Output Line Length
#define CONLEN 6 //Maximum Constant Name Length
#define MAXCON 255 //Maximum Number of Constants
#define STCLEN 6 //Maximum Struct Name Length
#define MAXSTC 32 //Maximum Number of Stuctures
#define STMLEN 6 //Maximum Struct Member Name Length
#define MAXSTM 255 //Maximum Number of Stucture Members
#define VARLEN 6 //Maximum Variable Name Length
#define MAXVAR 255 //Maximum Number of Variables
#define MAXTRM 16 //Maximum Terms in Stack
#define DATASPC 4096 //Space to Allocate for Variable Data
#define SUBMAX 4 //Maximum Number of Sub Directories
#define LABLEN 6 //Maximum Program Label Length
#define MAXLAB 255 //Maximum Number of Program Labels
#define LBLLEN 6 //Maximum Label Length
#define LBLFMT "L_%04d" //Label Format
#define LABSFX ":" //Label Suffix
#define MAXLBL 15 //Maximum Number of Labels (Nesting Depth)
#define LOCPFX "." //Local Variable Prefix
#define CPUOP "PROCESSOR" //Target CPU Pseudo-Operator
#define CPUARG "6502" //Target CPU Operand
#define ORGOP "ORG" //Origin Pseudo-Op
#define EQUOP "EQU" //Equate Pseudo-Op
#define BYTEOP "DC" //Define Byte Pseudo-Op
#define STROP "DS" //Define String Pseudo-Op
#define ALNOP "ALIGN" //Align Pseudo-Op
#define USEGOP "SEG.U" //Uninitalized Segment Pseudo-Op
#define LOCOP "SUBROUTINE" //Local Variable Boundary Pseudo-Op
#define ASMFMT "%-7s %-3s %-12s %s\n" //Assembly Language Line printf Format
/* Internal defines */
#define TRUE -1
#define FALSE 0
void initim(); //Initialize elapsed time counter
void prtpos(); //Print current file name and position
void prttim(); //Print elapsed time
#define DEBUG(fmt, val) {if (debug) {prtpos(); prttim(); printf(fmt, val);}}
#define DETAIL(fmt, val) {if (debug) printf(fmt, val);}
#define ERROR(fmt, val, err) {fprintf(stderr, fmt, val);exterr(err);}
int debug; //Print Debug Info (TRUE or FALSE)
int gencmt; //Generate Assembly Language Comments
char asmcmt[LINELEN]; //Processed Assembly Language Comment
int curcol, curlin; //Position in Source Code
int savcol, savlin; //Save Position in Source Code
int bgntim; //Starting Time
int nxtchr; //Next Character of Source File to Process
int nxtupc; //Next Character Converted to Uppercase
int savchr; //Holds nxtchr when switching input files
int wrdlen; //Length of Parsed Word
char word[LINELEN]; //Word parsed from source file
char uword[LINELEN]; //Word converted to uppercase
char cmtasm[LINELEN]; //Assembly Language Comment Text
char hdrnam[FNAMLEN]; //Header File Name
char incdir[FNAMLEN]; //Include File Directory
char inpnam[FNAMLEN]; //Input File Name
char subdir[SUBMAX][FNAMLEN]; //Include File SubDirectory
int subcnt; //Number of Include Directories
int subidx; //Index into subdir[]
int alcvar; //Allocate Variables Flag
int inblck; //Multiline Block Flag
int infunc; //Inside Function Definition Flag
int lsrtrn; //Last Statement was a Return Flag
int fcase; //First Case Statement Flag
int padcnt; //Number of Padding Bytes at End of Program
void exterr(int errnum); //Print current file name & position and exit
void expctd(char *expected); //Print Expected message and exit
void addcmt(char *s); //Append string to comment
void chrcmt(char c); //Append character to comment
void setcmt(char *s); //Set comment to string
#define SCMNT(str) if (gencmt) {setcmt(str);}
#define ACMNT(str) if (gencmt) {addcmt(str);}
#define CCMNT(chr) if (gencmt) {chrcmt(chr);}
#define LCMNT(str) if (gencmt) {setcmt(str); cmtlin();}
/*************************************
* C02 Common Definitions & Routines *
*************************************/
#define FNAMLEN 255 //Maximum File Name Length
#define LINELEN 255 //Maximum Input/Output Line Length
#define CONLEN 6 //Maximum Constant Name Length
#define MAXCON 255 //Maximum Number of Constants
#define STCLEN 6 //Maximum Struct Name Length
#define MAXSTC 32 //Maximum Number of Stuctures
#define STMLEN 6 //Maximum Struct Member Name Length
#define MAXSTM 255 //Maximum Number of Stucture Members
#define VARLEN 6 //Maximum Variable Name Length
#define MAXVAR 255 //Maximum Number of Variables
#define MAXTRM 16 //Maximum Terms in Stack
#define DATASPC 4096 //Space to Allocate for Variable Data
#define SUBMAX 4 //Maximum Number of Sub Directories
#define LABLEN 6 //Maximum Program Label Length
#define MAXLAB 255 //Maximum Number of Program Labels
#define LBLLEN 6 //Maximum Label Length
#define LBLFMT "L_%04d" //Label Format
#define LABSFX ":" //Label Suffix
#define MAXLBL 15 //Maximum Number of Labels (Nesting Depth)
#define LOCPFX "." //Local Variable Prefix
#define CPUOP "PROCESSOR" //Target CPU Pseudo-Operator
#define CPUARG "6502" //Target CPU Operand
#define ORGOP "ORG" //Origin Pseudo-Op
#define EQUOP "EQU" //Equate Pseudo-Op
#define BYTEOP "BYTE" //Define Byte Pseudo-Op
#define STROP "DS" //Define String Pseudo-Op
#define ALNOP "ALIGN" //Align Pseudo-Op
#define USEGOP "SEG.U" //Uninitalized Segment Pseudo-Op
#define LOCOP "SUBROUTINE" //Local Variable Boundary Pseudo-Op
#define ASMFMT "%-7s %-3s %-12s %s\n" //Assembly Language Line printf Format
/* Internal defines */
#define TRUE -1
#define FALSE 0
void initim(); //Initialize elapsed time counter
void prtpos(); //Print current file name and position
void prttim(); //Print elapsed time
#define DEBUG(fmt, val) {if (debug) {prtpos(); prttim(); printf(fmt, val);}}
#define DETAIL(fmt, val) {if (debug) printf(fmt, val);}
#define ERROR(fmt, val, err) {fprintf(stderr, fmt, val);exterr(err);}
int debug; //Print Debug Info (TRUE or FALSE)
int cmos; //Flag: Use 65C02 Instruction Set
int gencmt; //Generate Assembly Language Comments
char asmcmt[LINELEN]; //Processed Assembly Language Comment
int curcol, curlin; //Position in Source Code
int savcol, savlin; //Save Position in Source Code
int bgntim; //Starting Time
int nxtchr; //Next Character of Source File to Process
int nxtupc; //Next Character Converted to Uppercase
int savchr; //Holds nxtchr when switching input files
int wrdlen; //Length of Parsed Word
char word[LINELEN]; //Word parsed from source file
char uword[LINELEN]; //Word converted to uppercase
int pstlen; //Length of Parsed String
char pstrng[LINELEN]; //String parsed fron source file
char cmtasm[LINELEN]; //Assembly Language Comment Text
char cputyp[LINELEN]; //CPU Type
char hdrnam[FNAMLEN]; //Header File Name
char incdir[FNAMLEN]; //Include File Directory
char inpnam[FNAMLEN]; //Input File Name
char subdir[SUBMAX][FNAMLEN]; //Include File SubDirectory
int subcnt; //Number of Include Directories
int subidx; //Index into subdir[]
int alcvar; //Allocate Variables Flag
int inblck; //Multiline Block Flag
int infunc; //Inside Function Definition Flag
int lsrtrn; //Last Statement was a Return Flag
int fcase; //First Case Statement Flag
int padcnt; //Number of Padding Bytes at End of Program
void exterr(int errnum); //Print current file name & position and exit
void expctd(char *expected); //Print Expected message and exit
void addcmt(char *s); //Append string to comment
void chrcmt(char c); //Append character to comment
void setcmt(char *s); //Set comment to string
#define SCMNT(str) if (gencmt) {setcmt(str);}
#define ACMNT(str) if (gencmt) {addcmt(str);}
#define CCMNT(chr) if (gencmt) {chrcmt(chr);}
#define LCMNT(str) if (gencmt) {setcmt(str); cmtlin();}

276
src/cond.c
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@ -1,138 +1,138 @@
/************************************
* C02 Conditional Parsing Routines *
************************************/
#include <stdio.h>
#include <stdlib.h>
#include <ctype.h>
#include <string.h>
#include <errno.h>
#include "common.h"
#include "asm.h"
#include "parse.h"
#include "vars.h"
#include "expr.h"
#include "label.h"
#include "cond.h"
int cmprtr; //Encoded Comparison Operator
int cmpenc; //Encoded Comparator Character
/* Encode Comparison Operator Character *
* Args: Comparison Operator Character *
* Returns: Comparison Operator Bit Mask */
int enccmp(char c) {
int e;
DEBUG("Encoding Comparison Character '%c'", c)
switch(c) {
case '=': e = 1; break;
case '<': e = 2; break;
case '>': e = 4; break;
default: e = 0;
}
if (e) { CCMNT(c); skpchr(); }
DETAIL(", encoded as %d\n", e);
return e;
}
/* Process and Compile Comparison Operator and *
* Args: comparator - Encoded Comparison Operator *
* Uses: term - Term Being Compared Against *
* label - Branch Target if Comparison is FALSE */
void prccmp(void) {
DEBUG("Processing comparator %d", cmprtr) DETAIL(" with REVCMP=%d\n", revcmp)
if (cmprtr > 7) { //Process Flag
cmprtr = (cmprtr ^ revcmp) & 1; //Apply Reversal
if (cmprtr) asmlin("BPL", cmplbl);
else asmlin("BMI", cmplbl);
return;
}
cmprtr = (cmprtr ^ revcmp) & 7; //Apply reversal
switch(cmprtr) {
case 0: // Raw Expression (Skip)
asmlin("BEQ", cmplbl); break;
case 1: // = or ==
asmlin("CMP", term); asmlin("BNE", cmplbl); break;
case 2: // <
asmlin("CMP", term); asmlin("BCS", cmplbl); break;
case 3: // <= or =<
asmlin("CLC", ""); asmlin("SBC", term); asmlin("BCS", cmplbl); break;
case 4: // >
asmlin("CLC", ""); asmlin("SBC", term); asmlin("BCC", cmplbl); break;
case 5: // >= or =>
asmlin("CMP", term); asmlin("BCC", cmplbl); break;
case 6: // <> or ><
asmlin("CMP", term); asmlin("BEQ", cmplbl); break;
case 7: // Raw Expression (Normal)
asmlin("BNE", cmplbl); break;
default:
ERROR("Unsupported comparison operator index %d\n", cmprtr, EXIT_FAILURE)
}
}
/* Parse Comparison */
void prscmp(int revrse) {
skpspc();
cmpenc = enccmp(nxtchr); //Encode Comparison Character
cmprtr = cmpenc; //Set Encoded Comparator
if (cmprtr) {
cmpenc = enccmp(nxtchr); //Encode Next Comparison Character
if (cmpenc != 0) cmprtr = cmprtr | cmpenc; //Combine Encoded Comparator
}
skpspc();
if (cmprtr) prstrm(FALSE);
//prccmp(); - Do after check for logical operator
DEBUG("Parsed comparator %d\n", cmprtr)
}
/* Parse Flag Operator */
void prsflg(int revrse) {
DEBUG("Parsing Flag Operator '%c'\n", nxtchr)
if (match('+')) cmprtr = 8; //Bit 0 = 0
else if (match('-')) cmprtr = 9; //Bit 1 = 1
else expctd("Flag operator");
skpchr();
}
/* Parse Logical Operator *
* Sets: logops */
void prslop(void) {
DEBUG("Checking for Logical Operator\n", 0)
logopr = LOPNONE;
skpspc();
if (isalph()) {
getwrd(); //Get Logical Operator
DEBUG("Parsing Logical Operator %s\n", word)
if (wordis("AND")) logopr = LOPAND;
else if (wordis("OR")) logopr = LOPOR;
else ERROR("Encountered invalid token \"%s\"\n", word, EXIT_FAILURE)
}
DEBUG("Set LOGOPR to %d\n", logopr)
}
/* Parse and Compile Conditional Expression *
* Condition = <expression> <comparator> <term> */
void prscnd(char trmntr, int revrse) {
DEBUG("Parsing condition with REVRSE=%d\n", revrse)
tmplbl[0] = 0;
do {
strcpy(cmplbl, cndlbl); DEBUG("Set CMPLBL to \"%s\"\n", cmplbl);
revcmp = revrse;
if (look('!')) revcmp = (revcmp) ? FALSE: TRUE;
DEBUG("Set REVCMP to %d\n", revcmp)
if (!look('.')) prsxpr(0);
if (look(':')) prsflg(revcmp); //Parse Flag Operator
else prscmp(revcmp); //Parse Comparison Operator
prslop(); //Parse Logical Operator
if (logopr == LOPOR) {
revcmp = (revcmp) ? FALSE: TRUE;
DEBUG("Set REVCMP to %d\n", revcmp)
}
if (logopr && revcmp) {
if (!tmplbl[0]) newlbl(tmplbl);
strcpy(cmplbl, tmplbl); DEBUG("Set CMPLBL to \"%s\"\n", cmplbl);
}
prccmp(); //Process Comparison/Flag Operator
} while (logopr);
if (tmplbl[0]) setlbl(tmplbl);
expect(trmntr);
}
/************************************
* C02 Conditional Parsing Routines *
************************************/
#include <stdio.h>
#include <stdlib.h>
#include <ctype.h>
#include <string.h>
#include <errno.h>
#include "common.h"
#include "asm.h"
#include "parse.h"
#include "vars.h"
#include "expr.h"
#include "label.h"
#include "cond.h"
int cmprtr; //Encoded Comparison Operator
int cmpenc; //Encoded Comparator Character
/* Encode Comparison Operator Character *
* Args: Comparison Operator Character *
* Returns: Comparison Operator Bit Mask */
int enccmp(char c) {
int e;
DEBUG("Encoding Comparison Character '%c'", c)
switch(c) {
case '=': e = 1; break;
case '<': e = 2; break;
case '>': e = 4; break;
default: e = 0;
}
if (e) { CCMNT(c); skpchr(); }
DETAIL(", encoded as %d\n", e);
return e;
}
/* Process and Compile Comparison Operator and *
* Args: comparator - Encoded Comparison Operator *
* Uses: term - Term Being Compared Against *
* label - Branch Target if Comparison is FALSE */
void prccmp(void) {
DEBUG("Processing comparator %d", cmprtr) DETAIL(" with REVCMP=%d\n", revcmp)
if (cmprtr > 7) { //Process Flag
cmprtr = (cmprtr ^ revcmp) & 1; //Apply Reversal
if (cmprtr) asmlin("BPL", cmplbl);
else asmlin("BMI", cmplbl);
return;
}
cmprtr = (cmprtr ^ revcmp) & 7; //Apply reversal
switch(cmprtr) {
case 0: // Raw Expression (Skip)
asmlin("BEQ", cmplbl); break;
case 1: // = or ==
asmlin("CMP", term); asmlin("BNE", cmplbl); break;
case 2: // <
asmlin("CMP", term); asmlin("BCS", cmplbl); break;
case 3: // <= or =<
asmlin("CLC", ""); asmlin("SBC", term); asmlin("BCS", cmplbl); break;
case 4: // >
asmlin("CLC", ""); asmlin("SBC", term); asmlin("BCC", cmplbl); break;
case 5: // >= or =>
asmlin("CMP", term); asmlin("BCC", cmplbl); break;
case 6: // <> or ><
asmlin("CMP", term); asmlin("BEQ", cmplbl); break;
case 7: // Raw Expression (Normal)
asmlin("BNE", cmplbl); break;
default:
ERROR("Unsupported comparison operator index %d\n", cmprtr, EXIT_FAILURE)
}
}
/* Parse Comparison */
void prscmp(int revrse) {
skpspc();
cmpenc = enccmp(nxtchr); //Encode Comparison Character
cmprtr = cmpenc; //Set Encoded Comparator
if (cmprtr) {
cmpenc = enccmp(nxtchr); //Encode Next Comparison Character
if (cmpenc != 0) cmprtr = cmprtr | cmpenc; //Combine Encoded Comparator
}
skpspc();
if (cmprtr) prstrm(FALSE);
//prccmp(); - Do after check for logical operator
DEBUG("Parsed comparator %d\n", cmprtr)
}
/* Parse Flag Operator */
void prsflg(int revrse) {
DEBUG("Parsing Flag Operator '%c'\n", nxtchr)
if (match('+')) cmprtr = 8; //Bit 0 = 0
else if (match('-')) cmprtr = 9; //Bit 1 = 1
else expctd("Flag operator");
skpchr();
}
/* Parse Logical Operator *
* Sets: logops */
void prslop(void) {
DEBUG("Checking for Logical Operator\n", 0)
logopr = LOPNONE;
skpspc();
if (isalph()) {
getwrd(); //Get Logical Operator
DEBUG("Parsing Logical Operator %s\n", word)
if (wordis("AND")) logopr = LOPAND;
else if (wordis("OR")) logopr = LOPOR;
else ERROR("Encountered invalid token \"%s\"\n", word, EXIT_FAILURE)
}
DEBUG("Set LOGOPR to %d\n", logopr)
}
/* Parse and Compile Conditional Expression *
* Condition = <expression> <comparator> <term> */
void prscnd(char trmntr, int revrse) {
DEBUG("Parsing condition with REVRSE=%d\n", revrse)
tmplbl[0] = 0;
do {
strcpy(cmplbl, cndlbl); DEBUG("Set CMPLBL to \"%s\"\n", cmplbl);
revcmp = revrse;
if (look('!')) revcmp = (revcmp) ? FALSE: TRUE;
DEBUG("Set REVCMP to %d\n", revcmp)
if (!look('.')) prsxpr(0);
if (look(':')) prsflg(revcmp); //Parse Flag Operator
else prscmp(revcmp); //Parse Comparison Operator
prslop(); //Parse Logical Operator
if (logopr == LOPOR) {
revcmp = (revcmp) ? FALSE: TRUE;
DEBUG("Set REVCMP to %d\n", revcmp)
}
if (logopr && revcmp) {
if (!tmplbl[0]) newlbl(tmplbl);
strcpy(cmplbl, tmplbl); DEBUG("Set CMPLBL to \"%s\"\n", cmplbl);
}
prccmp(); //Process Comparison/Flag Operator
} while (logopr);
if (tmplbl[0]) setlbl(tmplbl);
expect(trmntr);
}

20
src/cond.h
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@ -1,10 +1,10 @@
/************************************
* C02 Conditional Parsing Routines *
************************************/
enum LOGOPS {LOPNONE, LOPAND, LOPOR};
int revcmp; //Reverse Comparison
int logopr; //Logical Operator (set to LOGOPS)
void prscnd(char trmntr, int revrse); //Parse Conditional Expression
/************************************
* C02 Conditional Parsing Routines *
************************************/
enum LOGOPS {LOPNONE, LOPAND, LOPOR};
int revcmp; //Reverse Comparison
int logopr; //Logical Operator (set to LOGOPS)
void prscnd(char trmntr, int revrse); //Parse Conditional Expression

1
src/dclrtn.c
View File

@ -53,6 +53,7 @@ void addfnc(void) {
infunc = TRUE; //Set Inside Function Definition Flag
DEBUG("Set infunc to %d\n", infunc)
setlbl(fncnam); //Set Function Entry Point
asmlin(LOCOP, ""); //Set Local Variables Boundary
if (prmtra[0]) asmlin("STA", prmtra); //Store First Parameter
if (prmtry[0]) asmlin("STY", prmtry); //Store Second Parameter
if (prmtrx[0]) asmlin("STX", prmtrx); //Store Third Parameter

34
src/dclrtn.h
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@ -1,17 +1,17 @@
/************************************
* C02 Declaration Compiling Routines *
************************************/
char fncnam[VARLEN+1]; //Function Name
char prmtra[VARLEN+1]; //Function Parameter A
char prmtrx[VARLEN+1]; //Function Parameter X
char prmtry[VARLEN+3]; //Function Parameter Y
int prmcnt; //Number of Parameters
//int lpemtd; //Location Prefix Emitted
void addcon(int numval); //Add Constant
int pmodfr(); //Check for and Parse Modifier
int ctype(int reqtyp); //Check for Type Keyword
int ptype(int m); //Check for and Parse Type Keyword
enum types {TNONE, TVOID, TENUM, TBITMASK,TCHAR, TINT, TSTRUCT};
/************************************
* C02 Declaration Compiling Routines *
************************************/
char fncnam[VARLEN+1]; //Function Name
char prmtra[VARLEN+1]; //Function Parameter A
char prmtrx[VARLEN+1]; //Function Parameter X
char prmtry[VARLEN+3]; //Function Parameter Y
int prmcnt; //Number of Parameters
//int lpemtd; //Location Prefix Emitted
void addcon(int numval); //Add Constant
int pmodfr(); //Check for and Parse Modifier
int ctype(int reqtyp); //Check for Type Keyword
int ptype(int m); //Check for and Parse Type Keyword
enum types {TNONE, TVOID, TENUM, TBITMASK,TCHAR, TINT, TSTRUCT};

826
src/expr.c
View File

@ -1,372 +1,454 @@
/***********************************
* C02 Expression Parsing Routines *
***********************************/
#include <stdio.h>
#include <stdlib.h>
#include <ctype.h>
#include <string.h>
#include <errno.h>
#include "common.h"
#include "asm.h"
#include "parse.h"
#include "vars.h"
#include "label.h"
#include "expr.h"
/* Push Term and Operator onto Stack */
void pshtrm(void) {
if (trmidx >= MAXTRM) ERROR("Maximum Function Call/Array Index Depth Exceeded", 0, EXIT_FAILURE)
oprstk[trmidx] = oper; //Put Current Operator on Stack
strcpy(trmstk[trmidx], term); //Put Current Term on Stack
trmidx++; //Increment Stack Pointer
}
/* Pop Term and Operator off Stack */
void poptrm(void) {
trmidx--; //Decrement Stack Pointer
strcpy(term, trmstk[trmidx]); //Restore Current Term from Stack
oper = oprstk[trmidx]; //Restore Current Operator from Stack
}
/* Parse value (literal or identifier) *
* Args: alwreg - allow registers *
8 alwcon - allow constants *
* Sets: value - the value (as a string) *
* valtyp - value type */
void prsval(int alwreg, int alwcon) {
DEBUG("Parsing value\n", 0)
skpspc();
if (islpre()) prslit(); //Parse Literal
else if (isalph()) prsvar(alwreg, alwcon); //Parse Variable
else if (isbtop()) prsbop(); //Parse Byte Operator
else expctd("literal or variable");
DEBUG("Parsed value of type %d\n", valtyp)
skpspc();
}
/* Process Unary Minus */
void prcmns(void) {
DEBUG("Processing unary minus", 0)
asmlin("LDA", "#$00"); //Handle Unary Minus
}
/* Parse array index *
* Args: clbrkt - require closing bracket *
* Sets: value - array index or *
* "" if no index defined */
void prsidx(int clbrkt) {
expect('[');
prsval(TRUE, TRUE); //Parse Value, Allow Registers & Constants
DEBUG("Parsed array index '%s'\n", value)
if (clbrkt) expect(']');
}
/* Process Simple Array Index *
* Uses: term - array variable name *
* valtyp - array index value type *
* value - array index as string *
* word - array index raw string *
* Sets: term - modified variable name */
void prcsix(void) {
if (valtyp == LITERAL) {
strcat(term, "+");
strcat(term, word);
}
else if (strcmp(value, "Y")==0)
strcat(term, ",Y");
else {
if (strcmp(value, "A")==0) asmlin("TAX", "");
else if (strcmp(value, "X")!=0) asmlin("LDX", value);
strcat(term, ",X");
}
}
/* Process Expression Array Index */
void prcxix(void) {
pshtrm(); //Push Array Variable onto Term Stack
if (trmcnt) asmlin("PHA", ""); //Save Accumulator if not first term
prcftm(FALSE); //Process First Term of Expression
prsrxp(']'); //Parse Rest of Expression
asmlin("TAX", ""); //Transfer Result of Expression to Index Register
if (trmcnt) asmlin("PLA", ""); //Restore Accumator if not first term
poptrm(); //Pop Array Variable off Term Stack
strcat(term, ",X");
}
/* Check for, Parse, and Process Index */
void chkidx(void) {
//DEBUG("Checking for Array Index with valtyp=%d\n", valtyp)
if (valtyp == ARRAY) {
if (look('-')) {
prcmns();
prcxix();
}
else {
prsidx(FALSE);
if (valtyp > REGISTER) prcxix();
else if (look(']')) prcsix();
else prcxix();
}
}
}
/* Parse Term in Expression *
* Sets: term - the term (as a string) */
int prstrm(int alwint) {
DEBUG("Parsing term\n", 0)
prsval(FALSE, TRUE); //Parse Value - Disallow Registers, Allow Constants
if (valtyp == FUNCTION) ERROR("Function call only allowed in first term\n", 0, EXIT_FAILURE)
strcpy(term, value);
if (valtyp == VARIABLE && prcvar(alwint)) return TRUE;
DEBUG("Parsed term %s\n", term)
chkidx(); //Check for Array Index
skpspc();
return FALSE;
}
/* Process Address Reference
* Args: adract = Address Action (adacts) *
* symbol = Symbol to Process */
void prcadr(int adract, char* symbol) {
DEBUG("Processing address '%s'\n", word)
strcpy(word,"#>(");
strcat(word,symbol);
strcat(word,")");
if (adract == ADPUSH) { asmlin("LDA", word); asmlin("PHA", ""); }
else asmlin("LDY", word);
strcpy(word,"#<(");
strcat(word,symbol);
strcat(word,")");
if (adract == ADPUSH) { asmlin("LDA", word); asmlin("PHA", ""); }
else asmlin("LDX", word);
}
/* Parse and Compile Address of Operator *
* Args: adract = Address Action */
void prsadr(int adract) {
DEBUG("Parsing address\n", 0)
if (isnpre()) prsnum(0xFFFF);
else {
getwrd();
if (fndlab(word)) strcpy(value, word);
else prsvrw(FALSE, TRUE);
}
if (adract) prcadr(adract, value); //Compile Address Reference
else strcpy(word, value); //Save for Calling Routine
}
/* Parse and Create Anonymous String *
* Args: adract = Address Action *
* alwstr = Allow String */
void prsstr(int adract, int alwstr) {
if (!alwstr) ERROR("Illegal String Reference", 0, EXIT_FAILURE)
DEBUG("Parsing anonymous string\n", 0)
newlbl(vrname); //Generate Variable Name
value[0] = 0; //Use Variable Size 0
setvar(MTNONE, VTCHAR); //Set Variable Name, Type, and Size
prsdts(); //Parse Data String
setdat(); //Set Variable Data
varcnt++; //Increment Variable Counter
if (adract) prcadr(adract, vrname); //Compile Address Reference
else strcpy(word, vrname); //Save for Calling Routine
}
/* Check for and Process Address or String *
* Args: adract = Address Action *
* alwstr = Allow String */
int chkadr(int adract, int alwstr) {
DEBUG("Checking for Address or String\n", 0)
int result = TRUE;
if (look('&')) prsadr(adract);
else if (match('"')) prsstr(adract, alwstr);
else result = FALSE;
skpspc();
return result;
}
/* Parse Byte Operator */
void prsbop(void) {
char byteop = getnxt();
CCMNT(byteop);
DEBUG("Parsing byte operator '%c'\n", byteop)
if (chkadr(FALSE, FALSE)) {
sprintf(value, "%c(%s)", byteop, word);
valtyp = LITERAL;
} else {
reqvar(FALSE);
if (vartyp != VTINT) ERROR("Integer Value Expected\n", 0, EXIT_FAILURE)
if (byteop == '>') strcat(value, "+1");
vartyp = VTCHAR;
}
DEBUG("Set value to \"%s\"\n", value)
}
/* Parse Function Argument or Return Values */
void prsfpr(char trmntr) {
if (!chkadr(ADLDYX, TRUE) && isxpre() || match('.')) {
if (!look('.')) {if (prsxpf(0)) goto prsfne;}
if (look(',') && !chkadr(ADLDYX, TRUE)) {
if (!look('.')) {
if (prstrm(TRUE)) goto prsfne;
asmlin("LDY", term);
}
if (look(',')) {
prsval(FALSE, TRUE); //Parse Value - Disallow Registers, Allow Constants
if (valtyp > VARIABLE) ERROR("Illegal Value Function Argument\n", 0, EXIT_FAILURE);
if (valtyp == VARIABLE && vartyp != VTCHAR) ERROR("Illegal Variable Type\n", 0, EXIT_FAILURE);
asmlin("LDX", value); }
}
}
prsfne:
expect(trmntr);
}
/* Parse function call */
void prsfnc(char trmntr) {
DEBUG("Processing Function Call '%s'\n", term)
//int argexp = FALSE; //Expression(s) in second and third argument
pshtrm(); //Push Function Name onto Term Stack
skpchr(); //skip open paren
CCMNT('(');
prsfpr(')'); //Parse Function Parameters
expect(trmntr);
poptrm(); //Pop Function Name off Term Stack
asmlin("JSR", term);
skpspc();
}
/* Process Integer Variable */
void prcvri(void) {
DEBUG("Processing Integer Variable '%s'\n", value)
asmlin("LDX", value);
strcat(value, "+1");
asmlin("LDY", value);
}
/* Process Variable in Term */
int prcvar(int alwint) {
switch (vartyp) {
case VTINT:
if (!alwint) ERROR("Illegal Use of Integer Variable %s\n", word, EXIT_FAILURE)
prcvri();
return TRUE;
case VTARRAY:
if (!alwint) ERROR("Illegal Reference to Array %s\n", word, EXIT_FAILURE)
prcadr(ADNONE, term);
return TRUE;
case VTSTRUCT:
if (!alwint) ERROR("Illegal Reference to Struct %s\n", word, EXIT_FAILURE)
prcadr(ADNONE, term);
return TRUE;
default:
return FALSE;
}
}
/* Process first term of expression */
int prcftm(int alwint) {
DEBUG("Processing first term '%s'\n", value)
strcpy(term, value);
if (valtyp == VARIABLE && prcvar(alwint)) return TRUE;
if (valtyp == FUNCTION) prsfnc(0); //Parse Expression Function
else if (wordis("A")) return FALSE;
else if (wordis("X")) asmlin("TXA", "");
else if (wordis("Y")) asmlin("TYA", "");
else { chkidx(); asmlin("LDA", term); }
return FALSE;
}
/* Parse first term of expession *
* First term can include function calls */
int prsftm(int alwint) {
prsval(TRUE, TRUE); //Parse Value, Allow Registers & Constants
return prcftm(alwint);
}
/* Process Arithmetic or Bitwise Operator *
* and the term that follows it */
void prcopr(void) {
DEBUG("Processing operator '%c'\n", oper)
switch(oper) {
case '+': asmlin("CLC", ""); asmlin("ADC", term); break; //Addition
case '-': asmlin("SEC", ""); asmlin("SBC", term); break; //Subtraction
case '&': asmlin("AND", term); break; //Bitwise AND
case '!': //For systems that don't have pipe in character set
case '|': asmlin("ORA", term); break; //Bitwise OR
case '^': asmlin("EOR", term); break; //Bitwise XOR
default: ERROR("Unrecognized operator '%c'\n", oper, EXIT_FAILURE)
}
oper = 0;
}
/* Parse Remainder of Expression */
void prsrxp(char trmntr) {
skpspc();
while (isoper()) {
trmcnt++; //Increment Expression Depth
prsopr(); //Parse Operator
prstrm(FALSE); //Parse Term
prcopr(); //Process Operator
trmcnt--; //Decrement Expression Depth
}
expect(trmntr);
}
int prsxpp(char trmntr, int alwint) {
DEBUG("Parsing expression\n", 0)
skpspc();
trmcnt = 0; //Initialize Expression Depth
if (match('-')) prcmns(); //Process Unary Minus
else if (prsftm(alwint)) return TRUE; //Parse First Term
prsrxp(trmntr); //Parse Remainder of Express
return FALSE;
}
/* Parse and compile expression */
void prsxpr(char trmntr) {
prsxpp(trmntr, FALSE);
}
/* Parse and compile function parameter expression *
* Returns: TRUE if Integer Expression */
int prsxpf(char trmntr) {
return prsxpp(trmntr, TRUE);
}
/* Parse and Compile Integer Expression *
* (Address, Integer Literal, Variable, *
* Struct Member, or Function) *
* Args: trmntr - expression terminator *
* asmxpr - assemble expression *
* Sets: value - Parsed Value or Symbol */
void prsxpi(char trmntr, int asmxpr) {
skpspc();
DEBUG("Parsing integer expression\n", 0)
if (!chkadr(TRUE, FALSE)) {
if (isnpre()) {
DEBUG("Parsing Integer Literal\n", 0)
int number = prsnum(0xFFFF); //Parse Number into value
if (asmxpr) {
sprintf(value, "#%d", number & 0xFF); asmlin("LDX", value);
sprintf(value, "#%d", number >> 8); asmlin("LDY", value);
}
} else if (isalph()) {
prsvar(FALSE, TRUE);
if (valtyp == FUNCTION) {
strcpy(term, value);
prsfnc(0); //Parse Expression Function
} else if (valtyp == STRUCTURE) {
prsmbr(value);
if (vartyp != VTINT) ERROR("Illegal Member %s In Integer Expression", value, EXIT_FAILURE)
} else if (valtyp == VARIABLE && vartyp == VTINT) {
if (asmxpr) prcvri(); //Process Integer Variable
} else {
ERROR("Illegal Variable %s In Integer Expression", value, EXIT_FAILURE)
}
} else {
ERROR("Expected Integer Value or Function\n", 0, EXIT_FAILURE);
}
}
expect(trmntr);
}
/***********************************
* C02 Expression Parsing Routines *
***********************************/
#include <stdio.h>
#include <stdlib.h>
#include <ctype.h>
#include <string.h>
#include <errno.h>
#include "common.h"
#include "asm.h"
#include "parse.h"
#include "vars.h"
#include "label.h"
#include "expr.h"
/* Push Term and Operator onto Stack */
void pshtrm(void) {
if (trmidx >= MAXTRM) ERROR("Maximum Function Call/Array Index Depth Exceeded", 0, EXIT_FAILURE)
oprstk[trmidx] = oper; //Put Current Operator on Stack
strcpy(trmstk[trmidx], term); //Put Current Term on Stack
trmidx++; //Increment Stack Pointer
DEBUG("expr.pshtrm: Pushed term %s ", term)
DETAIL("and operator '%onto stack'\n", oper)
}
/* Pop Term and Operator off Stack */
void poptrm(void) {
trmidx--; //Decrement Stack Pointer
strcpy(term, trmstk[trmidx]); //Restore Current Term from Stack
oper = oprstk[trmidx]; //Restore Current Operator from Stack
DEBUG("expr.pshtrm: Popped term %s ", term)
DETAIL("and operator '%c' off stack\n", oper)
}
/* Parse value (literal or identifier) *
* Args: alwreg - allow registers *
8 alwcon - allow constants *
* Sets: value - the value (as a string) *
* valtyp - value type */
void prsval(int alwreg, int alwcon) {
DEBUG("expr.prsval: Parsing value\n", 0)
skpspc();
if (islpre()) prslit(); //Parse Literal
else if (isalph()) prsvar(alwreg, alwcon); //Parse Variable
else if (isbtop()) prsbop(); //Parse Byte Operator
else expctd("literal or variable");
DEBUG("expr.prsval: Parsed value %s ", value)
DETAIL("of type %d\n", valtyp)
skpspc();
}
/* Process Unary Minus */
void prcmns(void) {
DEBUG("Processing unary minus", 0)
asmlin("LDA", "#$00"); //Handle Unary Minus
}
/* Parse array index *
* Args: clbrkt - require closing bracket *
* Sets: value - array index or *
* "" if no index defined */
void prsidx(int clbrkt) {
expect('[');
prsval(TRUE, TRUE); //Parse Value, Allow Registers & Constants
DEBUG("expr.prsidx: Parsed array index '%s'\n", value)
if (clbrkt) expect(']');
}
/* Process Simple Array Index *
* Uses: term - array variable name *
* valtyp - array index value type *
* value - array index as string *
* word - array index raw string *
* Sets: term - modified variable name */
void prcsix(void) {
DEBUG("expr.prcsix: Processing simple array index %s\n", word);
if (valtyp == LITERAL) {
strcat(term, "+");
strcat(term, word);
}
else if (strcmp(value, "Y")==0)
strcat(term, ",Y");
else {
if (strcmp(value, "A")==0) asmlin("TAX", "");
else if (strcmp(value, "X")!=0) asmlin("LDX", value);
strcat(term, ",X");
}
DEBUG("expr.prcsix: Set term to %s\n", term);
}
/* Process Expression Array Index */
void prcxix(void) {
DEBUG("expr.prcxix: Processing Expression Array Index", 0)
pshtrm(); //Push Array Variable onto Term Stack
if (trmcnt) asmlin("PHA", ""); //Save Accumulator if not first term
prcftm(FALSE); //Process First Term of Expression
prsrxp(']'); //Parse Rest of Expression
asmlin("TAX", ""); //Transfer Result of Expression to Index Register
if (trmcnt) asmlin("PLA", ""); //Restore Accumator if not first term
poptrm(); //Pop Array Variable off Term Stack
strcat(term, ",X");
DEBUG("expr.prcxix: Set term to %s\n", term);
}
/* Check for, Parse, and Process Index */
void chkidx(void) {
//DEBUG("Checking for Array Index with valtyp=%d\n", valtyp)
if (valtyp == ARRAY) {
if (look('-')) {
prcmns();
prcxix();
}
else {
prsidx(FALSE);
if (valtyp > REGISTER) prcxix();
else if (look(']')) prcsix();
else prcxix();
}
}
}
/* Parse Pointer *
* Sets: term - Compiled Pointer */
void prsptr(void) {
DEBUG("Parsing pointer\n", 0)
expect('*'); //Pointer Dereference Operator
prsvar(FALSE,FALSE); //Parse Variable to Dereference
strcpy(term, value);
if (varble.modifr != MTZP) ERROR("Illegal dereference of non-pointer variable %s.\n", value, EXIT_FAILURE)
DEBUG("expr.prsptr: Set term to %s\n", term);
}
/* Process Pointer Index *
* Sets: term - Compiled Pointer */
void prcptx(char *index) {
DEBUG("expr.prcptx: Processing Dereferenced Pointer %s ", term)
DETAIL("index [%s]\n", index)
if (strcmp(index,"X")==0) ERROR("Illegal use of register X\n", 0, EXIT_FAILURE);
if (strcmp(index,"A")==0) asmlin("TAY", "");
else if (strcmp(index,"Y") != 0) asmlin("LDY", index);
}
/* Process Pointer *
* Sets: term - Compiled Pointer */
int prcptr(void) {
prsptr();
DEBUG("expr.prcptr: Dereferencing Pointer %s\n", value);
if (valtyp == ARRAY) {
prsidx(TRUE);
prcptx(value);
sprintf(word, "(%s),Y", term);
} else if (cmos) {
sprintf(word, "(%s)", term);
} else {
asmlin("LDY","0");
sprintf(word, "(%s),Y", term);
}
strcpy(term, word);
DEBUG("expr.prcptr: Set term to %s\n", term);
return FALSE; //Return Value Not an Integer
}
/* Parse Term in Expression *
* Sets: term - the term (as a string) *
* Returns: TRUE if term is an integer */
int prstrm(int alwint) {
DEBUG("Parsing term\n", 0)
if (match('*')) return prcptr(); //Parse and Deference Pointer
prsval(FALSE, TRUE); //Parse Value - Disallow Registers, Allow Constants
if (valtyp == FUNCTION) ERROR("Function call only allowed in first term\n", 0, EXIT_FAILURE)
strcpy(term, value);
if (valtyp == VARIABLE && prcivr(alwint)) return TRUE;
DEBUG("expr.prstrm: Parsed term %s\n", term)
chkidx(); //Check for Array Index
skpspc();
return FALSE;
}
/* Process Address Reference
* Args: adract = Address Action (adacts) *
* symbol = Symbol to Process */
void prcadr(int adract, char* symbol) {
DEBUG("Processing address '%s'\n", word)
strcpy(word,"#>(");
strcat(word,symbol);
strcat(word,")");
if (adract == ADPUSH) { asmlin("LDA", word); asmlin("PHA", ""); }
else asmlin("LDY", word);
strcpy(word,"#<(");
strcat(word,symbol);
strcat(word,")");
if (adract == ADPUSH) { asmlin("LDA", word); asmlin("PHA", ""); }
else asmlin("LDX", word);
}
/* Parse and Compile Address of Operator *
* Args: adract = Address Action */
void prsadr(int adract) {
DEBUG("Parsing address\n", 0)
if (isnpre()) prsnum(0xFFFF);
else {
getwrd();
if (fndlab(word)) strcpy(value, word);
else prsvrw(FALSE, TRUE);
}
if (adract) prcadr(adract, value); //Compile Address Reference
else strcpy(word, value); //Save for Calling Routine
}
/* Parse and Create Anonymous String *
* Args: adract = Address Action *
* alwstr = Allow String */
void prsstr(int adract, int alwstr) {
if (!alwstr) ERROR("Illegal String Reference", 0, EXIT_FAILURE)
DEBUG("Parsing anonymous string\n", 0)
newlbl(vrname); //Generate Variable Name
value[0] = 0; //Use Variable Size 0
setvar(MTNONE, VTCHAR); //Set Variable Name, Type, and Size
prsdts(); //Parse Data String
setdat(); //Set Variable Data
varcnt++; //Increment Variable Counter
if (adract) prcadr(adract, vrname); //Compile Address Reference
else strcpy(word, vrname); //Save for Calling Routine
}
/* Check for and Process Address or String *
* Args: adract = Address Action *
* alwstr = Allow String */
int chkadr(int adract, int alwstr) {
DEBUG("Checking for Address or String\n", 0)
int result = TRUE;
if (look('&')) prsadr(adract);
else if (match('"')) prsstr(adract, alwstr);
else result = FALSE;
skpspc();
return result;
}
/* Parse Byte Operator */
void prsbop(void) {
char byteop = getnxt();
CCMNT(byteop);
DEBUG("Parsing byte operator '%c'\n", byteop)
if (chkadr(FALSE, FALSE)) {
sprintf(value, "%c(%s)", byteop, word);
valtyp = LITERAL;
} else {
reqvar(FALSE);
if (vartyp != VTINT) ERROR("Integer Value Expected\n", 0, EXIT_FAILURE)
if (byteop == '>') strcat(value, "+1");
vartyp = VTCHAR;
}
DEBUG("Set value to \"%s\"\n", value)
}
/* Parse Function Argument or Return Values */
void prsfpr(char trmntr) {
int pusha = 0; int pushy = 0; //A and Y Arguments Pushed
if (!chkadr(ADLDYX, TRUE) && isxpre() || match('.')) {
if (look('.')) pusha = 255;
else {if (prsxpf(0)) goto prsfne;}
if (look(',') && !chkadr(ADLDYX, TRUE)) {
if (look('.')) {
pushy = -1;
}
else {
if (look('(')) {
if (pusha==0) {pusha = 1; asmlin("PHA","");} //Save A on Stack
prsxpr(')'); asmlin("TAY", ""); //Evaluate Expression, and Copy to Y
}
else {
if (prstrm(TRUE)) goto prsfne;
asmlin("LDY", term);
}
}
if (look(',')) {
if (look('(')) {
if (pusha==0) {pusha = 1; asmlin("PHA","");} //Save A on Stack
if (pushy==0) {pushy = 1; asmlin("PHA",""); asmlin("PHY","");} //Save Y on Stack
prsxpr(')'); asmlin("TAX", ""); //Evaluate Expression, and Copy to X
}
else {
prsval(FALSE, TRUE); //Parse Value - Disallow Registers, Allow Constants
if (valtyp > VARIABLE) ERROR("Illegal Value Function Argument\n", 0, EXIT_FAILURE);
if (valtyp == VARIABLE && vartyp != VTCHAR) ERROR("Illegal Variable Type\n", 0, EXIT_FAILURE);
asmlin("LDX", value);
}
}
}
}
prsfne:
if (pushy==1) {asmlin("PLA",""); asmlin("TAY","");} //Pull Y Off Stack
if (pusha==1) asmlin("PLA",""); //Pull A Off Stack
expect(trmntr);
}
/* Parse function call */
void prsfnc(char trmntr) {
DEBUG("Processing Function Call '%s'\n", term)
//int argexp = FALSE; //Expression(s) in second and third argument
pshtrm(); //Push Function Name onto Term Stack
skpchr(); //skip open paren
CCMNT('(');
prsfpr(')'); //Parse Function Parameters
expect(trmntr);
poptrm(); //Pop Function Name off Term Stack
asmlin("JSR", term);
skpspc();
}
/* Process Integer Variable */
void prcvri(void) {
DEBUG("Processing Integer Variable '%s'\n", value)
asmlin("LDX", value);
strcat(value, "+1");
asmlin("LDY", value);
}
/* Process Integer Variable in Term *
* Args: alwint = Allow Integer-Like Variable *
* Returns: Integer-Like Variable Processed - TRUE/FALSE */
int prcivr(int alwint) {
switch (vartyp) {
case VTINT:
if (!alwint) ERROR("Illegal Use of Integer Variable %s\n", word, EXIT_FAILURE)
prcvri();
return TRUE;
case VTARRAY:
if (!alwint) ERROR("Illegal Reference to Array %s\n", word, EXIT_FAILURE)
prcadr(ADNONE, term);
return TRUE;
case VTSTRUCT:
if (!alwint) ERROR("Illegal Reference to Struct %s\n", word, EXIT_FAILURE)
prcadr(ADNONE, term);
return TRUE;
default:
return FALSE;
}
}
/* Process first term of expression */
int prcftm(int alwint) {
DEBUG("Processing first term '%s'\n", value)
strcpy(term, value);
if (valtyp == VARIABLE && prcivr(alwint)) return TRUE;
if (valtyp == FUNCTION) prsfnc(0); //Parse Expression Function
else if (wordis("A")) return FALSE;
else if (wordis("X")) asmlin("TXA", "");
else if (wordis("Y")) asmlin("TYA", "");
else { chkidx(); asmlin("LDA", term); }
return FALSE;
}
/* Parse first term of expession *
* First term can include function calls */
int prsftm(int alwint) {
DEBUG("Parsing first term\n", 0)
if (match('*')) {
prcptr(); //Parse and Deference Pointer
asmlin("LDA", term);
return FALSE;
}
prsval(TRUE, TRUE); //Parse Value, Allow Registers & Constants
return prcftm(alwint);
}
/* Process Arithmetic or Bitwise Operator *
* and the term that follows it */
void prcopr(void) {
DEBUG("Processing operator '%c'\n", oper)
switch(oper) {
case '+': asmlin("CLC", ""); asmlin("ADC", term); break; //Addition
case '-': asmlin("SEC", ""); asmlin("SBC", term); break; //Subtraction
case '&': asmlin("AND", term); break; //Bitwise AND
case '!': //For systems that don't have pipe in character set
case '|': asmlin("ORA", term); break; //Bitwise OR
case '^': asmlin("EOR", term); break; //Bitwise XOR
default: ERROR("Unrecognized operator '%c'\n", oper, EXIT_FAILURE)
}
oper = 0;
}
/* Parse Remainder of Expression */
void prsrxp(char trmntr) {
skpspc();
while (isoper()) {
trmcnt++; //Increment Expression Depth
prsopr(); //Parse Operator
prstrm(FALSE); //Parse Term
prcopr(); //Process Operator
trmcnt--; //Decrement Expression Depth
}
expect(trmntr);
}
int prsxpp(char trmntr, int alwint) {
DEBUG("Parsing expression\n", 0)
skpspc();
trmcnt = 0; //Initialize Expression Depth
if (match('-')) prcmns(); //Process Unary Minus
else if (prsftm(alwint)) return TRUE; //Parse First Term
prsrxp(trmntr); //Parse Remainder of Express
return FALSE;
}
/* Parse and compile expression */
void prsxpr(char trmntr) {
prsxpp(trmntr, FALSE);
}
/* Parse and compile function parameter expression *
* Returns: TRUE if Integer Expression */
int prsxpf(char trmntr) {
return prsxpp(trmntr, TRUE);
}
/* Parse and Compile Integer Expression *
* (Address, Integer Literal, Variable, *
* Struct Member, or Function) *
* Args: trmntr - expression terminator *
* asmxpr - assemble expression *
* Sets: value - Parsed Value or Symbol */
void prsxpi(char trmntr, int asmxpr) {
skpspc();
DEBUG("Parsing integer expression\n", 0)
if (!chkadr(TRUE, FALSE)) {
if (isnpre()) {
DEBUG("Parsing Integer Literal\n", 0)
int number = prsnum(0xFFFF); //Parse Number into value
if (asmxpr) {
sprintf(value, "#%d", number & 0xFF); asmlin("LDX", value);
sprintf(value, "#%d", number >> 8); asmlin("LDY", value);
}
} else if (isalph()) {
prsvar(FALSE, TRUE);
if (valtyp == FUNCTION) {
strcpy(term, value);
DEBUG("expr.prsxpi: Set term to %s\n", term)
prsfnc(0); //Parse Expression Function
} else if (valtyp == STRUCTURE) {
prsmbr(value);
if (vartyp != VTINT) ERROR("Illegal Member %s In Integer Expression", value, EXIT_FAILURE)
} else if (valtyp == VARIABLE && vartyp == VTINT) {
if (asmxpr) prcvri(); //Process Integer Variable
} else {
ERROR("Illegal Variable %s In Integer Expression", value, EXIT_FAILURE)
}
} else {
ERROR("Expected Integer Value or Function\n", 0, EXIT_FAILURE);
}
}
expect(trmntr);
}

62
src/expr.h
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@ -1,30 +1,32 @@
/**********************************
* C02 Expession Parsing Routines *
**********************************/
enum adacts {ADNONE, ADLDYX, ADPUSH};
char term[255]; //Term parsed from equation
char oprstk[MAXTRM]; //Operator Stack
char trmstk[MAXTRM][VARLEN+1]; //Function/Index Terms Stack
int trmidx; //Next Index in Stack
int trmcnt; //Number of total terms in current expression
int chkadr(int adract, int alwstr); //Check for and Process Address or String
void chkidx(); //Check for, Parse, and Process Index
int prcftm(int alwint); //Process First Term
void prcvri(void); //Process Integer Variable
int prcvar(int alwint); //Process Variable in Term
void prsadr(int adract); //Parse and Compile Address of Operator
void prsbop(void); //Parse Byte Operator
void prsval(int alwreg, int alwcon); //Parse Value
void prsfnc(char trmntr); //Parse function call
void prsfpr(char trmntr); //Parse Function Paraeters or Return
void prsidx(); //Parse Array Index
int prstrm(int alwint); //Parse Term in Expression
void prsrxp(char trmntr); //Parse Rest of Expression
int prsxpf(char trmntr); //Parse Expression in Function Call
void prsxpr(char trmntr); //Parse Expression
void prsxpi(char trmntr, int asmxpr); //Parse Integer Expression
/**********************************
* C02 Expession Parsing Routines *
**********************************/
enum adacts {ADNONE, ADLDYX, ADPUSH};
char term[255]; //Term parsed from equation
char oprstk[MAXTRM]; //Operator Stack
char trmstk[MAXTRM][VARLEN+1]; //Function/Index Terms Stack
int trmidx; //Next Index in Stack
int trmcnt; //Number of total terms in current expression
int chkadr(int adract, int alwstr); //Check for and Process Address or String
void chkidx(); //Check for, Parse, and Process Index
int prcftm(int alwint); //Process First Term
void prcptx(char *index); //Process Pointer Index
void prcvri(void); //Process Integer Variable
int prcivr(int alwint); //Process Integer Variable in Term
void prsadr(int adract); //Parse and Compile Address of Operator
void prsbop(void); //Parse Byte Operator
void prsval(int alwreg, int alwcon); //Parse Value
void prsfnc(char trmntr); //Parse function call
void prsfpr(char trmntr); //Parse Function Paraeters or Return
void prsidx(); //Parse Array Index
void prsptr(void); //Parse Pointer
int prstrm(int alwint); //Parse Term in Expression
void prsrxp(char trmntr); //Parse Rest of Expression
int prsxpf(char trmntr); //Parse Expression in Function Call
void prsxpr(char trmntr); //Parse Expression
void prsxpi(char trmntr, int asmxpr); //Parse Integer Expression

204
src/files.c
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@ -1,102 +1,102 @@
/******************************
* C02 File Handling Routines *
******************************/
#include <stdio.h>
#include <stdlib.h>
#include <ctype.h>
#include <string.h>
#include <errno.h>
#include "common.h"
#include "files.h"
/* Error - Print textual description of system error *
* and exit with system error code */
void extsys(char *s) {
perror(s);
exterr(errno);
}
/* Open Source File *
* Uses: srcnam - Source File Name *
* Sets: srcfil - Source File Handle */
void opnsrc(void) {
DEBUG("Processing Source File Name '%s'\n", srcnam)
if (strrchr(srcnam, '.') == NULL) strcat(srcnam, ".c02"); //if no extension. add ".c02"
DEBUG("opening Source File '%s'\n", srcnam)
srcfil = fopen(srcnam, "r"); //open file
if (srcfil == NULL) extsys(srcnam);
}
/* Close Source File */
void clssrc(void) { fclose(srcfil); }
/* Open Output File *
* Uses: outnam - Output File Name *
* Sets: outfil - Output File Handle */
void opnout(void) {
DEBUG("Processing Output File Name '%s'\n", outnam)
if (strlen(outnam) == 0) //if Output File not specified
{
strcpy(outnam, srcnam); //copy Source Name to Ouput Name
char *dot = strrchr(outnam, '.'); //find extension
if (dot != NULL) *dot = 0; //and remove it
DEBUG("Set Output File Name to '%s'\n", outnam)
}
if (strrchr(outnam, '.') == NULL) strcat(outnam, ".asm"); //if no extension, add ".asm"
DEBUG("Opening Output File '%s'\n", outnam)
outfil = fopen(outnam, "w"); //open file
if (outfil == NULL) extsys(outnam);
}
/* Close Output File */
void clsout(void) {
fprintf(outfil, "\n");
fclose(outfil);
}
/* Open Log File *
* Uses: srcnam - Source File Name *
* Sets: logfil - Log File Handle */
void opnlog(void) {
strcpy(lognam, srcnam); //set Log File Name to Source File Name
char *dot = strrchr(lognam, '.'); //find file extension
if (dot != NULL) *dot = 0; //and remove it
strcat(lognam, ".log"); //add extension ".log"
DEBUG("Opening Log File '%s'\n", lognam)
logfil = fopen(lognam, "w");
if (logfil == NULL) extsys(lognam);
}
/* Close Log File *
* Uses: logfil - Log File Handle */
void clslog(void) { fclose(logfil); }
/* Open Include file *
* Uses: incnam - Include File Name *
* subnam - Include File Name (Subdirectory) *
* Sets: incfil - Include File Handle */
void opninc(int chksub)
{
if (chksub) {
for (subidx=0; subidx<subcnt; subidx++) {
DEBUG("Attempting to open include file '%s'\n", subnam[subidx])
incfil = fopen(subnam[subidx], "r");
if (incfil == NULL) DEBUG("Open failed\n", 0)
else {
strcpy(incnam, subnam[subidx]);
DEBUG("INCNAM set to '%s'\n", incnam);
return;
}
}
}
DEBUG("Opening include file '%s'\n", incnam)
incfil = fopen(incnam, "r");
if (incfil == NULL) extsys(incnam);
}
/* Close Include File *
* Uses: incfil - Include File Handle */
void clsinc(void) { fclose(incfil); }
/******************************
* C02 File Handling Routines *
******************************/
#include <stdio.h>
#include <stdlib.h>
#include <ctype.h>
#include <string.h>
#include <errno.h>
#include "common.h"
#include "files.h"
/* Error - Print textual description of system error *
* and exit with system error code */
void extsys(char *s) {
perror(s);
exterr(errno);
}
/* Open Source File *
* Uses: srcnam - Source File Name *
* Sets: srcfil - Source File Handle */
void opnsrc(void) {
DEBUG("Processing Source File Name '%s'\n", srcnam)
if (strrchr(srcnam, '.') == NULL) strcat(srcnam, ".c02"); //if no extension. add ".c02"
DEBUG("opening Source File '%s'\n", srcnam)
srcfil = fopen(srcnam, "r"); //open file
if (srcfil == NULL) extsys(srcnam);
}
/* Close Source File */
void clssrc(void) { fclose(srcfil); }
/* Open Output File *
* Uses: outnam - Output File Name *
* Sets: outfil - Output File Handle */
void opnout(void) {
DEBUG("Processing Output File Name '%s'\n", outnam)
if (strlen(outnam) == 0) //if Output File not specified
{
strcpy(outnam, srcnam); //copy Source Name to Ouput Name
char *dot = strrchr(outnam, '.'); //find extension
if (dot != NULL) *dot = 0; //and remove it
DEBUG("Set Output File Name to '%s'\n", outnam)
}
if (strrchr(outnam, '.') == NULL) strcat(outnam, ".asm"); //if no extension, add ".asm"
DEBUG("Opening Output File '%s'\n", outnam)
outfil = fopen(outnam, "w"); //open file
if (outfil == NULL) extsys(outnam);
}
/* Close Output File */
void clsout(void) {
fprintf(outfil, "\n");
fclose(outfil);
}
/* Open Log File *
* Uses: srcnam - Source File Name *
* Sets: logfil - Log File Handle */
void opnlog(void) {
strcpy(lognam, srcnam); //set Log File Name to Source File Name
char *dot = strrchr(lognam, '.'); //find file extension
if (dot != NULL) *dot = 0; //and remove it
strcat(lognam, ".log"); //add extension ".log"
DEBUG("Opening Log File '%s'\n", lognam)
logfil = fopen(lognam, "w");
if (logfil == NULL) extsys(lognam);
}
/* Close Log File *
* Uses: logfil - Log File Handle */
void clslog(void) { fclose(logfil); }
/* Open Include file *
* Uses: incnam - Include File Name *
* subnam - Include File Name (Subdirectory) *
* Sets: incfil - Include File Handle */
void opninc(int chksub)
{
if (chksub) {
for (subidx=0; subidx<subcnt; subidx++) {
DEBUG("Attempting to open include file '%s'\n", subnam[subidx])
incfil = fopen(subnam[subidx], "r");
if (incfil == NULL) DEBUG("Open failed\n", 0)
else {
strcpy(incnam, subnam[subidx]);
DEBUG("INCNAM set to '%s'\n", incnam);
return;
}
}
}
DEBUG("Opening include file '%s'\n", incnam)
incfil = fopen(incnam, "r");
if (incfil == NULL) extsys(incnam);
}
/* Close Include File *
* Uses: incfil - Include File Handle */
void clsinc(void) { fclose(incfil); }

54
src/files.h
View File

@ -1,27 +1,27 @@
/******************************
* C02 File Handling Routines *
******************************/
FILE *srcfil; //Source File (Input)
FILE *outfil; //Assembler File (Output)
FILE *logfil; //Log File (Output)
FILE *incfil; //Include File Handle
FILE *inpfil; //Current Input File
char srcnam[FNAMLEN]; //Source File Name
char outnam[FNAMLEN]; //Assembler File Name
char lognam[FNAMLEN]; //Log File Name
char incnam[FNAMLEN]; //Include File Name
char subnam[SUBMAX][FNAMLEN]; //Include File Name (Subdirectory)
void opnsrc(); //Open Source File
void clssrc(); //Close Source File
void opnout(); //Open Output File
void clsout(); //Close Output File
void opnlog(); //Open Log File
void clslog(); //Close Log File
void opninc(int chksub); //Open Include File
void clsinc(); //Close Include File
/******************************
* C02 File Handling Routines *
******************************/
FILE *srcfil; //Source File (Input)
FILE *outfil; //Assembler File (Output)
FILE *logfil; //Log File (Output)
FILE *incfil; //Include File Handle
FILE *inpfil; //Current Input File
char srcnam[FNAMLEN]; //Source File Name
char outnam[FNAMLEN]; //Assembler File Name
char lognam[FNAMLEN]; //Log File Name
char incnam[FNAMLEN]; //Include File Name
char subnam[SUBMAX][FNAMLEN]; //Include File Name (Subdirectory)
void opnsrc(); //Open Source File
void clssrc(); //Close Source File
void opnout(); //Open Output File
void clsout(); //Close Output File
void opnlog(); //Open Log File
void clslog(); //Close Log File
void opninc(int chksub); //Open Include File
void clsinc(); //Close Include File

6
src/include.c
View File

@ -37,8 +37,8 @@ void pincnm(void) {
sublen[subidx] = strlen(subnam[subidx]);
subnam[subidx][sublen[subidx]++] = '/';
}
dlmtr = '>';
}
dlmtr = '>';
}
else if (dlmtr != '"')
ERROR("Unexpected character '%c' after include\n", dlmtr, EXIT_FAILURE)
@ -86,7 +86,7 @@ void pdefin(void) {
/* Parse ASCII Subdirective */
void pascii(void) {
getwrd(); //Get Pragma Subdirective
getwrd(); //Get Subdirective Argument
DEBUG("Parsing subdirective '%s'\n", word)
if (wordis("INVERT"))
invasc = TRUE;
@ -146,7 +146,7 @@ void pprgma(void) {
else if (wordis("ORIGIN"))
porign(); //Parse Origin
else if (wordis("PADDING"))
ppddng(); //Parse Origin
ppddng(); //Parse Padding
else if (wordis("RAMBASE"))
prambs(); //Parse RamBase
else if (wordis("VARTABLE"))

28
src/include.h
View File

@ -1,14 +1,14 @@
/*************************************
* C02 Include File Parsing Routines *
*************************************/
char line[255]; /*Entire line parsed from include file*/
void logcon(); //Print Constant Table to Log File
void pdefin(); //Process define directive
void pdefin(); //Process define directive
void penumd(); //Process enum directive
void phdrfl(); //Process command line header file
void pincfl(); //Process include file
void pprgma(); //Parse Pragma Directive
void setsrc(); ///Set Input to Source File
/*************************************
* C02 Include File Parsing Routines *
*************************************/
char line[255]; /*Entire line parsed from include file*/
void logcon(); //Print Constant Table to Log File
void pdefin(); //Process define directive
void pdefin(); //Process define directive
void penumd(); //Process enum directive
void phdrfl(); //Process command line header file
void pincfl(); //Process include file
void pprgma(); //Parse Pragma Directive
void setsrc(); ///Set Input to Source File

306
src/label.c
View File

@ -1,153 +1,153 @@
/******************************************************
* C02 Label Parsing, Generation, and Lookup Routines *
******************************************************/
#include <stdio.h>
#include <stdlib.h>
#include <ctype.h>
#include <string.h>
#include <errno.h>
#include "common.h"
#include "files.h"
#include "asm.h"
#include "parse.h"
#include "label.h"
#include "vars.h"
/* Add New Program Label */
void addlab(char *name) {
if (fndvar(name)) ERROR("Label %s conflicts with variable with same name", name, EXIT_FAILURE)
if (fndlab(name)) ERROR("Duplicate program label %s\n", name, EXIT_FAILURE)
DEBUG("Adding Program Label %s ", name) DEBUG("at index %d\n", labcnt)
strcpy(labnam[labcnt++], name);
}
int fndlab(char *name) {
DEBUG("Looking for Program Label %s\n", name)
for (labidx=0; labidx<labcnt; labidx++)
if (strcmp(labnam[labidx], name) == 0) return TRUE;
DEBUG("Label %s Not Found\n", name)
return FALSE;
}
/* Print Program Label Table to Log File */
void loglab(void) {
int i;
fprintf(logfil, "\n%-10s\n", "Label");
for (i=0; i<labcnt; i++) {
fprintf(logfil, "%-10s\n", labnam[i]);
}
}
const char lblflg[] = {LFNONE, LFNONE, LFNONE, LFBGN, LFEND, LFBGN, LFEND, LFEND, LFNONE, LFNONE}; //Label Type Flags
// enum ltypes {LTNONE, LTIF, LTELSE, LTLOOP, LTEND, LTDO, LTDWHL, LTSLCT, LTCASE, LTFUNC}; //Label Types
/* Find Last Label of Specified Types *
* Args: lbtyp1: First label type *
* lbtyp2: Second label type *
* Sets: tmplbl - Label name *
* Returns: Index into label table *
* (-1 if not found) */
int lstlbl(int lbflag) {
int i;
DEBUG("Searching for label flag %d\n", lbflag)
for (i = lblcnt - 1; i>-1; i--)
if (lblflg[lbltyp[i]] == lbflag) break;
DEBUG("Search produced label index %d\n", i)
if (i>=0) strcpy(tmplbl, lblnam[i]);
return i;
}
/* Set Block Flag for Last Label */
void setblk(int blkflg) { lblblk[lblcnt-1] = blkflg; }
/* Set label for next line of *
* Assembly Language Code *
* to word */
void setlbl(char *lblset) {
DEBUG("Setting Label '%s'\n", lblset)
if (strlen(lblasm) > 0) {
DEBUG("Emitting Label '%s'\n'", lblasm);
asmlin("",""); //Emit Block End Label on it's own line
}
if (strlen(lblset) > LBLLEN) ERROR("Label '%s' exceeds maximum size\n", word, EXIT_FAILURE)
strcpy(lblasm, lblset);
}
/* Parse Program Label */
void prslab(void) {
DEBUG("Parsing Label '%s''\n", word)
addlab(word);
CCMNT(nxtchr);
skpchr(); //skip ':'
}
/* generate new label */
void newlbl(char* lbname) {
sprintf(lbname, LBLFMT, lblnxt++);
DEBUG("Generated new label '%s'\n", lbname)
}
/* Check Label Contents *
* If lbname is blank, generate new *
* label and copy into lbname */
void chklbl(char* lbname) {
if (lbname[0]) return;
newlbl(lbname);
}
/* Request Label *
* if label is already set, returns that label *
* else generates new label and sets it */
void reqlbl(char* lbname) {
DEBUG("Requesting Label\n",0)
if (lblasm[0] == 0) {newlbl(lbname); setlbl(lbname);}
else {strcpy(lbname,lblasm); DEBUG("Found lblasm set to \"%s\"\n", lblasm)}
}
/* End Function Block */
void endfnc(void) {
DEBUG("Ending function definition with lsrtrn set to %d\n", lsrtrn)
if (!lsrtrn) asmlin("RTS", "");
infunc = FALSE;
DEBUG("Set infunc to %d\n", infunc)
}
/* Pop Label from Stack and Emit on Next Line */
int poplbl(void) {
int lbtype = lbltyp[--lblcnt];
DEBUG("Popped label type %d\n", lbtype)
switch (lbtype) {
case LTFUNC: endfnc(); break; //Return From Subroutine
case LTDO: strcpy(loplbl, lblnam[lblcnt]); break;
case LTDWHL: strcpy(endlbl, lblnam[lblcnt]); break;
case LTCASE: strcpy(cndlbl, lblnam[lblcnt]); break;
case LTLOOP: asmlin("JMP", lblnam[lblcnt--]); //Jump to Beginning of Loop
default: setlbl(lblnam[lblcnt]); //Emit End of Loop Label
}
if (lbtype != LTCASE) inblck = lblblk[lblcnt-1];
return lbtype;
}
/* Get Top Label and Return Type */
int toplbl(char *rtlbl) {
if (lblcnt) {
strcpy(rtlbl, lblnam[lblcnt-1]);
DEBUG("Found top label %s\n", rtlbl)
return lbltyp[lblcnt-1];
}
rtlbl[0] = 0; //Clear Label
return LTNONE;
}
/* Push Label onto Stack *
* Args: lbltyp - Label type *
* Uses: curlbl - Label to push */
void pshlbl(int lbtype, char* lbname) {
DEBUG("Pushing label type %d\n", lbtype)
strcpy(lblnam[lblcnt], lbname);
lbltyp[lblcnt] = lbtype;
lblblk[lblcnt++] = FALSE;
DEBUG("Pushed label '%s' onto stack\n", lbname)
}
/******************************************************
* C02 Label Parsing, Generation, and Lookup Routines *
******************************************************/
#include <stdio.h>
#include <stdlib.h>
#include <ctype.h>
#include <string.h>
#include <errno.h>
#include "common.h"
#include "files.h"
#include "asm.h"
#include "parse.h"
#include "label.h"
#include "vars.h"
/* Add New Program Label */
void addlab(char *name) {
if (fndvar(name)) ERROR("Label %s conflicts with variable with same name", name, EXIT_FAILURE)
if (fndlab(name)) ERROR("Duplicate program label %s\n", name, EXIT_FAILURE)
DEBUG("Adding Program Label %s ", name) DEBUG("at index %d\n", labcnt)
strcpy(labnam[labcnt++], name);
}
int fndlab(char *name) {
DEBUG("Looking for Program Label %s\n", name)
for (labidx=0; labidx<labcnt; labidx++)
if (strcmp(labnam[labidx], name) == 0) return TRUE;
DEBUG("Label %s Not Found\n", name)
return FALSE;
}
/* Print Program Label Table to Log File */
void loglab(void) {
int i;
fprintf(logfil, "\n%-10s\n", "Label");
for (i=0; i<labcnt; i++) {
fprintf(logfil, "%-10s\n", labnam[i]);
}
}
const char lblflg[] = {LFNONE, LFNONE, LFNONE, LFBGN, LFEND, LFBGN, LFEND, LFEND, LFNONE, LFNONE}; //Label Type Flags
// enum ltypes {LTNONE, LTIF, LTELSE, LTLOOP, LTEND, LTDO, LTDWHL, LTSLCT, LTCASE, LTFUNC}; //Label Types
/* Find Last Label of Specified Types *
* Args: lbtyp1: First label type *
* lbtyp2: Second label type *
* Sets: tmplbl - Label name *
* Returns: Index into label table *
* (-1 if not found) */
int lstlbl(int lbflag) {
int i;
DEBUG("Searching for label flag %d\n", lbflag)
for (i = lblcnt - 1; i>-1; i--)
if (lblflg[lbltyp[i]] == lbflag) break;
DEBUG("Search produced label index %d\n", i)
if (i>=0) strcpy(tmplbl, lblnam[i]);
return i;
}
/* Set Block Flag for Last Label */
void setblk(int blkflg) { lblblk[lblcnt-1] = blkflg; }
/* Set label for next line of *
* Assembly Language Code *
* to word */
void setlbl(char *lblset) {
DEBUG("Setting Label '%s'\n", lblset)
if (strlen(lblasm) > 0) {
DEBUG("Emitting Label '%s'\n'", lblasm);
asmlin("",""); //Emit Block End Label on it's own line
}
if (strlen(lblset) > LBLLEN) ERROR("Label '%s' exceeds maximum size\n", word, EXIT_FAILURE)
strcpy(lblasm, lblset);
}
/* Parse Program Label */
void prslab(void) {
DEBUG("Parsing Label '%s''\n", word)
addlab(word);
CCMNT(nxtchr);
skpchr(); //skip ':'
}
/* generate new label */
void newlbl(char* lbname) {
sprintf(lbname, LBLFMT, lblnxt++);
DEBUG("Generated new label '%s'\n", lbname)
}
/* Check Label Contents *
* If lbname is blank, generate new *
* label and copy into lbname */
void chklbl(char* lbname) {
if (lbname[0]) return;
newlbl(lbname);
}
/* Request Label *
* if label is already set, returns that label *
* else generates new label and sets it */
void reqlbl(char* lbname) {
DEBUG("Requesting Label\n",0)
if (lblasm[0] == 0) {newlbl(lbname); setlbl(lbname);}
else {strcpy(lbname,lblasm); DEBUG("Found lblasm set to \"%s\"\n", lblasm)}
}
/* End Function Block */
void endfnc(void) {
DEBUG("Ending function definition with lsrtrn set to %d\n", lsrtrn)
if (!lsrtrn) asmlin("RTS", "");
infunc = FALSE;
DEBUG("Set infunc to %d\n", infunc)
}
/* Pop Label from Stack and Emit on Next Line */
int poplbl(void) {
int lbtype = lbltyp[--lblcnt];
DEBUG("Popped label type %d\n", lbtype)
switch (lbtype) {
case LTFUNC: endfnc(); break; //Return From Subroutine
case LTDO: strcpy(loplbl, lblnam[lblcnt]); break;
case LTDWHL: strcpy(endlbl, lblnam[lblcnt]); break;
case LTCASE: strcpy(cndlbl, lblnam[lblcnt]); break;
case LTLOOP: asmlin("JMP", lblnam[lblcnt--]); //Jump to Beginning of Loop
default: setlbl(lblnam[lblcnt]); //Emit End of Loop Label
}
if (lbtype != LTCASE) inblck = lblblk[lblcnt-1];
return lbtype;
}
/* Get Top Label and Return Type */
int toplbl(char *rtlbl) {
if (lblcnt) {
strcpy(rtlbl, lblnam[lblcnt-1]);
DEBUG("Found top label %s\n", rtlbl)
return lbltyp[lblcnt-1];
}
rtlbl[0] = 0; //Clear Label
return LTNONE;
}
/* Push Label onto Stack *
* Args: lbltyp - Label type *
* Uses: curlbl - Label to push */
void pshlbl(int lbtype, char* lbname) {
DEBUG("Pushing label type %d\n", lbtype)
strcpy(lblnam[lblcnt], lbname);
lbltyp[lblcnt] = lbtype;
lblblk[lblcnt++] = FALSE;
DEBUG("Pushed label '%s' onto stack\n", lbname)
}

82
src/label.h
View File

@ -1,41 +1,41 @@
/******************************************************
* C02 Label Parsing, Generation, and Lookup Routines *
******************************************************/
char labnam[MAXLAB+1][LABLEN+1]; //Program Label Names
int labcnt; //Number of Program Labels
int labidx; //Index into labnam[]
char curlbl[LBLLEN+1]; //Most recently generated label
char cmplbl[LBLLEN+1]; //Label for Comparison
char cndlbl[LBLLEN+1]; //Label for Conditional Code
char endlbl[LBLLEN+1]; //End Label
char forlbl[LBLLEN+1]; //For Loop Label
char loplbl[LBLLEN+1]; //Skip Increment Label
char skplbl[LBLLEN+1]; //Skip Increment Label
char tmplbl[LBLLEN+1]; //Temporary Label
char lblnam[MAXLBL+1][LBLLEN+1]; //Label Name Table
int lbltyp[MAXLBL+1]; //Label Type
int lblblk[MAXLBL+1]; //Label Ends Program Block
int lblcnt; //Number of Labels in stack
int lblnxt; //Sequence of next label to be generated
char lbltmp[LBLLEN+1]; //Label Temporary Storage
enum ltypes {LTNONE, LTIF, LTELSE, LTLOOP, LTEND, LTDO, LTDWHL, LTSLCT, LTCASE, LTFUNC}; //Label Types
enum lflags {LFNONE, LFBGN, LFEND}; //Label Flag Types
void addlab(char *name); //Add Program Label
int fndlab(char *name); //Find Program Label
void prslab(); //Parse Program Label
void loglab(void); //Print Program Label Table
void chklbl(char* lbname); //Check Label Contents
int lstlbl(int lbflag); //Find Last Label of Specified Types *
void newlbl(char* lbname); //Generate New Block Label
int poplbl(); //Pop Last Label and Emit on Next Line
void pshlbl(int lbtype, char* lbname); //Push Label onto Stack
void reqlbl(char* lbname); //Require Label
void setblk(int blkflg); //Set Block Flag for Last Label
void setlbl(char *lblset); //Emit word as Label on Next Line
int toplbl(char *rtlbl); //Get Top Label and Return Type
/******************************************************
* C02 Label Parsing, Generation, and Lookup Routines *
******************************************************/
char labnam[MAXLAB+1][LABLEN+1]; //Program Label Names
int labcnt; //Number of Program Labels
int labidx; //Index into labnam[]
char curlbl[LBLLEN+1]; //Most recently generated label
char cmplbl[LBLLEN+1]; //Label for Comparison
char cndlbl[LBLLEN+1]; //Label for Conditional Code
char endlbl[LBLLEN+1]; //End Label
char forlbl[LBLLEN+1]; //For Loop Label
char loplbl[LBLLEN+1]; //Skip Increment Label
char skplbl[LBLLEN+1]; //Skip Increment Label
char tmplbl[LBLLEN+1]; //Temporary Label
char lblnam[MAXLBL+1][LBLLEN+1]; //Label Name Table
int lbltyp[MAXLBL+1]; //Label Type
int lblblk[MAXLBL+1]; //Label Ends Program Block
int lblcnt; //Number of Labels in stack
int lblnxt; //Sequence of next label to be generated
char lbltmp[LBLLEN+1]; //Label Temporary Storage
enum ltypes {LTNONE, LTIF, LTELSE, LTLOOP, LTEND, LTDO, LTDWHL, LTSLCT, LTCASE, LTFUNC}; //Label Types
enum lflags {LFNONE, LFBGN, LFEND}; //Label Flag Types
void addlab(char *name); //Add Program Label
int fndlab(char *name); //Find Program Label
void prslab(); //Parse Program Label
void loglab(void); //Print Program Label Table
void chklbl(char* lbname); //Check Label Contents
int lstlbl(int lbflag); //Find Last Label of Specified Types *
void newlbl(char* lbname); //Generate New Block Label
int poplbl(); //Pop Last Label and Emit on Next Line
void pshlbl(int lbtype, char* lbname); //Push Label onto Stack
void reqlbl(char* lbname); //Require Label
void setblk(int blkflg); //Set Block Flag for Last Label
void setlbl(char *lblset); //Emit word as Label on Next Line
int toplbl(char *rtlbl); //Get Top Label and Return Type

48
src/parse.c
View File

@ -13,6 +13,8 @@
#include "asm.h"
#include "parse.h"
#include "label.h"
#include "expr.h"
#include "stmnt.h"
/* Various tests against nxtchr */
int match(char c) {return TF(nxtchr == c);}
@ -81,12 +83,15 @@ void skpspc(void) {
* otherwise FALSE */
int look(char c) {
int found;
DEBUG("parse.look: Looking for '%c', ", c);
skpspc();
found = match(c);
if (found) {
skpchr();
CCMNT(c);
DETAIL("Found\n", 0);
}
else DETAIL("Not found\n", 0);
return found;
}
@ -136,6 +141,8 @@ void getwrd(void) {
while (isanum()) word[wrdlen++] = toupper(getnxt());
word[wrdlen] = 0;
ACMNT(word);
DEBUG("parse.getwrd: Read word '%s' ", word)
DETAIL("delimited by '%c'\n", nxtchr)
}
/* Escape Character */
@ -154,31 +161,41 @@ char escape(char c) {
}
}
/* Escape Numeric Literal */
char escnum(void) {
DEBUG("Escaping numeric literal\n", 0);
char c = prsnum(0xff);
return c;
}
/* Get String *
* Sets: word = parsed string
* wrdlen = length of string (including terminator) */
void getstr(void) {
char strdel;
int escnxt = FALSE;
wrdlen = 0;
pstlen = 0;
DEBUG("Parsing string\n", 0)
strdel = getnxt(); //Get String Delimiter
CCMNT(strdel);
while(!match(strdel) || escnxt) {
if (isnl()) ERROR("String Not Terminated", 0, EXIT_FAILURE)
CCMNT(nxtchr);
if (escnxt) {
word[wrdlen++] = escape(getnxt());
if (isnpre()) pstrng[pstlen++] = escnum();
else pstrng[pstlen++] = escape(getnxt());
escnxt = FALSE;
}
else {
if (match('\\')) escnxt = TRUE;
else word[wrdlen++] = prcchr(nxtchr);
else pstrng[pstlen++] = prcchr(nxtchr);
skpchr();
}
}
skpchr(); //Skip End Delimiter
CCMNT(strdel);
word[wrdlen] = 0;
pstrng[pstlen] = 0;
strcpy(word,pstrng); wrdlen=pstlen;
}
/* Read Binary number from input file *
@ -357,21 +374,24 @@ void poperr(char* name) {
}
/* Process Post Operator */
void prcpst(int isint, char* name, char *index) {
DEBUG("Processing post operation '%c'\n", oper)
void prcpst(int isint, char* name, char *index, char indtyp, char ispntr) {
DEBUG("parse.prcpst: Processing post operation '%c'\n", oper)
if (ispntr) ERROR("Post Operation on dereferenced pointer %s not supported\n", name, EXIT_FAILURE)
//sprintf(word,"(%s),Y", name); strcpy(name, word); }
char name1[VARLEN+3];
strcpy(name1, name); strcat(name1, "+1");
if (strlen(index)) {
asmlin("LDX", index);
strcat(name,",X");
if (ispntr) prcptx(index); //Process Pointer Index
else prcidx(indtyp, name, index); //Process Index
}
else if (ispntr) asmlin("LDY","0");
switch(oper) {
case '+':
if (strcmp(name, "X")==0) asmlin("INX", "");
else if (strcmp(name, "Y")==0) asmlin("INY", "");
else if (strcmp(name, "A")==0) poperr(name); //65C02 supports implicit INC, 6502 does not
else if (strcmp(name, "A")==0 && !cmos) poperr(name); //65C02 supports implicit INC, 6502 does not
else {
asmlin("INC", name);
asmlin("INC", word);
if (isint) {
newlbl(skplbl);
asmlin("BNE", skplbl);
@ -383,7 +403,7 @@ void prcpst(int isint, char* name, char *index) {
case '-':
if (strcmp(name, "X")==0) asmlin("DEX", "");
else if (strcmp(name, "Y")==0) asmlin("DEY", "");
else if (strcmp(name, "A")==0) poperr(name); //65C02 supports implicit DEC, 6502 does not
else if (strcmp(name, "A")==0 && !cmos) poperr(name); //65C02 supports implicit DEC, 6502 does not
else {
if (isint) {
newlbl(skplbl);
@ -392,7 +412,7 @@ void prcpst(int isint, char* name, char *index) {
asmlin("DEC", name1);
setlbl(skplbl);
}
asmlin("DEC", name);
asmlin("DEC", name);
}
break;
case '<':
@ -419,7 +439,7 @@ void prcpst(int isint, char* name, char *index) {
}
/* Parse Post Operator */
int prspst(char trmntr, int isint, char* name, char* index) {
int prspst(char trmntr, int isint, char* name, char* index, char indtyp, char ispntr) {
oper = getnxt();
CCMNT(oper);
DEBUG("Checking for post operation '%c'\n", oper)
@ -427,7 +447,7 @@ int prspst(char trmntr, int isint, char* name, char* index) {
skpchr();
CCMNT(oper);
expect(trmntr);
prcpst(isint, name, index); //Process Post-Op
prcpst(isint, name, index, indtyp, ispntr); //Process Post-Op
return 0;
}
DEBUG("Not a post operation\n", 0)

2
src/parse.h
View File

@ -55,7 +55,7 @@ int prsbyt(); //Parse Numeric Byte
void prslit(); //Parse Literal
int prsnum(int maxval); //Parse Numeric
void prsopr(); //Parse Arithmetic Operator
int prspst(char trmntr, int isint, char* name, char* index); //Parse Post Operator
int prspst(char trmntr, int isint, char* name, char* index, char indtyp, char ispntr); //Parse Post Operator
int psizof(void); //Parse SizeOf Operator
int pidxof(void); //Parse SizeOf Operator
void skpchr(); //Skip Next Character

1115
src/stmnt.c
View File

File diff suppressed because it is too large Load Diff

44
src/stmnt.h
View File

@ -1,21 +1,23 @@
/************************************
* C02 Statement Compiling Routines *
************************************/
char asnvar[VARLEN+1]; //Assigned Variable Name
int asntyp; //Assigned Variable Type
char asnidx[VARLEN+1] ; //Assigned Variable Index
int asnivt; //Assigned Index Variable Type
char ysnvar[VARLEN+1]; //Assigned Y Variable Name
char ysnidx[VARLEN+1] ; //Assigned Y Variable Index
int ysnivt; //Assigned Y Index Variable Type
char xsnvar[VARLEN+1]; //Assigned X Variable Name
char xsnidx[VARLEN+1] ; //Assigned X Variable Index
int xsnivt; //Assigned X Index Variable Type
char xstmnt[LINELEN]; //Expected Statement
void bgnblk(char blkchr); //End Program Block
void endblk(int blkflg); //End Program Block
void pdowhl(); //Parse and Compile WHILE after DO
void pstmnt(); //Parse and Compile Program Statement
/************************************
* C02 Statement Compiling Routines *
************************************/
char asnvar[VARLEN+1]; //Assigned Variable Name
int asntyp; //Assigned Variable Type
char asnidx[VARLEN+1] ; //Assigned Variable Index
int asnivt; //Assigned Index Variable Type
char ysnvar[VARLEN+1]; //Assigned Y Variable Name
char ysnidx[VARLEN+1] ; //Assigned Y Variable Index
int ysnivt; //Assigned Y Index Variable Type
char xsnvar[VARLEN+1]; //Assigned X Variable Name
char xsnidx[VARLEN+1] ; //Assigned X Variable Index
int xsnivt; //Assigned X Index Variable Type
char xstmnt[LINELEN]; //Expected Statement
void bgnblk(char blkchr); //End Program Block
void endblk(int blkflg); //End Program Block
void prcasp(char trmntr); //Process Pointer Assignment
void prcidx(int idxtyp, char *name, char *index);
void pdowhl(); //Parse and Compile WHILE after DO
void pstmnt(); //Parse and Compile Program Statement

38
src/vars.c
View File

@ -21,7 +21,7 @@
* varcnt if not found *
* Returns: TRUE if found, otherwise FALSE */
int fndvar(char *name) {
DEBUG("Looking up variable '%s'\n", name)
DEBUG("vars,fndvar: Looking up variable '%s'\n", name)
for (varidx=0; varidx<varcnt; varidx++) {
if (strcmp(vartbl[varidx].name, name) == 0) {
memcpy(&varble, &vartbl[varidx], sizeof(varble));
@ -37,7 +37,7 @@ int fndvar(char *name) {
* sctcnt if not found *
* Returns: TRUE if found, otherwise FALSE */
int fndstc(char *name) {
DEBUG("Looking up struct '%s'\n", name)
DEBUG("vars.fndstc: Looking up struct '%s'\n", name)
for (stcidx=0; stcidx<stccnt; stcidx++)
if (strcmp(strcts[stcidx].name, name) == 0) return TRUE;
return FALSE;
@ -48,7 +48,7 @@ int fndstc(char *name) {
* stmcnt if not found *
* Returns: TRUE if found, otherwise FALSE */
int fndmbr(int idx, char *name) {
DEBUG("Looking up member '%s'\n", word)
DEBUG("vars.fndmbr: Looking up member '%s'\n", word)
for (mbridx=0; mbridx<mbrcnt; mbridx++) {
if (membrs[mbridx].strcti != idx) continue;
if (strcmp(membrs[mbridx].name, name) == 0) {
@ -88,7 +88,7 @@ void prcmbr(char* name) {
getwrd(); //Get Member Name
valtyp = gettyp(); //Determine Variable Type
if (valtyp == FUNCTION) ERROR("Illegal Function Reference\n", 0, EXIT_FAILURE)
DEBUG("Checking for member %s", word) DETAIL(" with struct index %d\n", stcidx)
DEBUG("vars.prcmbr: Checking for member %s", word) DETAIL(" with struct index %d\n", stcidx)
if (!fndmbr(stcidx, word)) ERROR("Struct does Not Contain Member %s\n", word, EXIT_FAILURE)
mbrofs += membr.offset; //Get Member Offet in Struct
}
@ -117,7 +117,7 @@ void prsvrw(int alwreg, int alwcon) {
valtyp = gettyp(); //Determine Variable Type
if (valtyp != FUNCTION) chksym(alwreg, alwcon, word);
strcpy(value, word);
DEBUG("Parsed variable '%s'\n", value)
DEBUG("vars.prsvrw: Parsed variable '%s'\n", value)
if (valtyp == STRUCTURE) prsmbr(value);
}
@ -143,7 +143,7 @@ void reqvar(int alwary) {
* Returns: variable size (as integer */
int pidxof(void) {
expect('?'); //Check for and Skip SizeOf Operator
DEBUG("Parsing IndexOf operator", 0);
DEBUG("vars.pidxof: Parsing IndexOf operator", 0);
mbridx = -1; //Set Member Index to None
reqvar(FALSE); //Parse Variable Name to get Size Of
if (mbridx > -1) {
@ -159,7 +159,7 @@ int pidxof(void) {
* Returns: variable size (as integer */
int psizof(void) {
expect('@'); //Check for and Skip SizeOf Operator
DEBUG("Parsing SizeOf operator", 0);
DEBUG("vars.pdizof: Parsing SizeOf operator", 0);
mbridx = -1; //Set Member Index to None
reqvar(FALSE); //Parse Variable Name to get Size Of
if (mbridx > -1) {
@ -181,7 +181,7 @@ int psizof(void) {
/* Parse Data Array */
void prsdta(void) {
DEBUG("Parsing Array Data\n", 0)
DEBUG("vars.prsdta: Parsing Array Data\n", 0)
int i;
dtype = DTARRY;
expect('{');
@ -202,7 +202,7 @@ void prsdts(void) {
dtype = DTSTR;
getstr();
strcpy(value, word);
DEBUG("Parsed Data String '%s'\n", value)
DEBUG("vars.prsdts: Parsed Data String '%s'\n", value)
}
/* Store variable data *
@ -212,34 +212,34 @@ void prsdts(void) {
void setdat(void) {
int i;
if (dtype == DTBYTE) {
DEBUG("Setting variable data to '%d'\n", litval)
DEBUG("vars.setdat: Setting variable data to '%d'\n", litval)
dlen = 1;
datvar[dsize++] = litval;
}
else if (dtype == DTINT) {
DEBUG("Setting variable data to '%d'\n", litval)
DEBUG("vars.setdat: Setting variable data to '%d'\n", litval)
dlen = 2;
datvar[dsize++] = litval & 0xFF;
datvar[dsize++] = litval >> 8;
}
else if (dtype == DTARRY) {
DEBUG("Setting variable data to array of length %d\n", dlen)
DEBUG("vars.setdat: Setting variable data to array of length %d\n", dlen)
for (i=0; i<dlen; i++) datvar[dsize++] = dattmp[i];
}
else {
DEBUG("Setting variable data to '%s'\n", value)
DEBUG("vars.setdat: Setting variable data to '%s'\n", value)
dlen = strlen(value);
for (i=0; i<dlen; i++) datvar[dsize++] = value[i];
}
datlen[varcnt] = dlen;
dattyp[varcnt] = dtype;
DEBUG("Total data allocated: %d bytes\n", dsize)
DEBUG("vars.setdat: Total data allocated: %d bytes\n", dsize)
}
/* Parse and store variable data */
void prsdat(int m, int t) {
if ((m & MTCONST) == 0) ERROR("Initialization allowed only on variables declared CONST\n", 0, EXIT_FAILURE);
DEBUG("Parsing variable data\n", 0)
DEBUG("vars.prsdat: Parsing variable data\n", 0)
skpspc();
if (t == VTINT) {dtype = DTINT; litval = prsnum(0xFFFF); } //Parse Integer
else if (islpre()) {dtype = DTBYTE; prslit(); } //Parse Data Literal
@ -253,7 +253,7 @@ void prsdat(int m, int t) {
* Uses: vrname - variable name *
* value - variable size */
void setvar(int m, int t) {
DEBUG("Added variable '%s' ", vrname);
DEBUG("vars.setvar: Added variable '%s' ", vrname);
strncpy(vartbl[varcnt].name, vrname, VARLEN);
vartbl[varcnt].modifr = m;
vartbl[varcnt].type = t;
@ -294,17 +294,17 @@ void addvar(int m, int t) {
}
else {
if (t == VTSTRUCT) {
DEBUG("Setting variable size to %d\n", strct.size)
DEBUG("vars.addvar: Setting variable size to %d\n", strct.size)
sprintf(value, "%d", strct.size);
} else if (t == VTINT) {
DEBUG("Setting variable size to %d\n", 2)
DEBUG("vars.addvar: Setting variable size to %d\n", 2)
sprintf(value, "%d", 2);
} else if (match('[')) {
t = VTARRAY; //Set Type to Array
CCMNT('[')
skpchr();
if (alcvar) {
DEBUG("Parsing array size\n", 0)
DEBUG("vars.addvar: Parsing array size\n", 0)
sprintf(value, "%d", prsnum(0xFF) + 1);
}
expect(']');

8
x16/include/veraclr.a02
View File

@ -25,7 +25,7 @@ RGBCLR: LSR ;Divide Red Value by 16
LSR
ORA TEMP0 ;Combine with Green
TAX ;and Return as LSB
.DC $7A ;PLY Return Red as MSB
PLY ;Return Red as MSB
RTS
;clrrgb(c) - Convert Palette Color to RGB Values
@ -34,7 +34,7 @@ RGBCLR: LSR ;Divide Red Value by 16
;Returns: A = Red Value (0-255)
; Y = Green Value (0-255)
; X = Blue Value (0-255)
CLRRGB: .DC $5A ;PHY Save MSB
CLRRGB: PHY ;Save MSB
TXA ;Copy LSB into Accumulator
AND #$F0 ;Isolate Green Value
TAY ;and Return in Y
@ -73,7 +73,7 @@ GETCLN: LDX $9F25 ;Get Current Data Port
; Y = Green Value (0-255)
; X = Blue Value (0-255)
GETRGB: JSR GETCLN ;Get Next Color Entry
JMP CLRRGB ;Convert to RGB and Return
BRA CLRRGB ;Convert to RGB and Return
;setclr(idx) - Set Color Entry idx in Palette
;Args: A = Color Entry Index
@ -106,7 +106,7 @@ SETCLN: TXA ;Copy LSB to Accumulator
;Destroys: TEMP0
;Affects: A,Y,X
SETRGB: JSR RGBCLR ;Convert RGB to Vera Color Value
JMP SETCLN ;and Write to Next Palette Entry
BRA SETCLN ;and Write to Next Palette Entry
;setidy(idx) - Set Palette Index and Entry Count
;Args: A = Palette Index

8
x16/include/veradsp.a02
View File

@ -86,7 +86,7 @@ GETVIM: .DC $04 ;Chroma Disable Bit Mask
GETVSP: LDA #7 ;Set Reg Offset to Vertical Stop
JSR GETHVS ;Read Registers
LSR ;Shift Left One Bit
JMP GETVSS ;Then Four More Bits and Mask
BRA GETVSS ;Then Four More Bits and Mask
;getvsr() - Get Vertical Start
;Affects: A
@ -108,7 +108,7 @@ GETHSP: LDA #5 ;Set Lookup Index to Horizontal Start
JSR GETHVS ;Read Registers
LSR ;Shift Left Two Bits
LSR
JMP GETHSS ;then Mask and Return
BRA GETHSS ;then Mask and Return
;gethsr() - Get Horizontal Start
;Affects: A
@ -127,9 +127,9 @@ GETHSS: AND #$03 ;Isolate Bit 0
GETHVS: JSR GETDCB ;Read LSB from Register
PHA ;and Save It
LDA #8 ;Load Register Offset for High Bits
STA $9F20 ;Set As Address LSB
STA $9F20 ;Set As Address LSB
LDA $9F23,X ;and Read High Bits into A
.DC $FA ;PLX ;Restore LSB into X
PLX ;Restore LSB into X
RTS
;setbdr() - Set Border Color

4
x16/include/veralyr.a02
View File

@ -263,7 +263,7 @@ SETLRM: AND TEMP1 ;Apply Mask
;Returns: A = Contents of Register
; X = Current Data Port
SETLRR: ;.dc $ff
.DC $5A ;PHY Save Value to Write
PHY ;Save Value to Write
JSR GETLRP ;Get Layer Page in Y
PLA ;Restore Value to Write
JMP SETREG ;and Write to Register
@ -278,7 +278,7 @@ SETLRR: ;.dc $ff
SETLRS: ;.dc $ff
JSR SAVREG ;Save Layer, Value, and Mask
JSR GETLRS ;Get Layer Size Register
JMP SETLRM ;Mask in Value and Write Back
BRA SETLRM ;Mask in Value and Write Back
;setmod() - Set Layer 0/1 Mode
;Args: A = Layer (0/1)

4
x16/include/veramem.a02
View File

@ -24,7 +24,7 @@ ASLADR: ASL TEMP1 ;Shift LSB Left
ROL TEMP0 ;Rotate Carry Left into LSB
DEX ;Decrement Shift Count
BNE ASLADR ;and Loop if Not Zero
JMP RESREG ;Return Bank, MSB, LSB
BRA RESREG ;Return Bank, MSB, LSB
;chkadr(opts,addr) - Check Vera Address
;Args: A = Bank + Auto-Increment
@ -163,7 +163,7 @@ SETVRB: STA TEMP1 ;Save Bit Pattern
JSR GETVRG ;Read Register
AND TEMP0 ;Mask Result
ORA TEMP1 ;Set Bits
JMP SETBYN ;Write Back to Register
BRA SETBYN ;Write Back to Register
;setreg(addr) - Set Register
;Args: A = Value to Write

20
x16/include/veraspr.a02
View File

@ -28,7 +28,7 @@ MAXSPR EQU 128 ;Maximum Sprite Index
ADDSPD: JSR SAVREG ;Save Sprite Index, Addend
JSR GETSPD ;Read Sprite Address Register
JSR ADDTXY ;Add Number to Address
JMP SETSTD ;Write Sprite (TEMP0) Address Register
BRA SETSTD ;Write Sprite (TEMP0) Address Register
;subspd(index,number) - Decrement Sprite Address Register
;Args: A = Sprite Index
@ -37,7 +37,7 @@ ADDSPD: JSR SAVREG ;Save Sprite Index, Addend
SUBSPD: JSR SAVREG ;Save Sprite Index, Addend
JSR GETSPD ;Read Sprite Address Register
JSR ADDTXY ;Add Number to Address
JMP SETSTD ;Write Sprite (TEMP0) Address Register
BRA SETSTD ;Write Sprite (TEMP0) Address Register
;clrspr(index) - Set Sprite Attributes
;Args: A = Sprite Index
@ -133,7 +133,7 @@ GETSXF: RTS
GETSPW: JSR GETSPS ;Get Sprite Size Register
ASL ;Shift Left 2 Bits
ASL
JMP GETSP6 ;Then Right 6 Bits
BRA GETSP6 ;Then Right 6 Bits
;getsph(index) - Get Sprite Height Specifier
;Args: A = Sprite Index
@ -327,7 +327,7 @@ SETSPZ: PHA ;Save Sprite Depth
SETSP2: ASL ;Move to Bits 2 and 3
ASL
STX TEMP1 ;Save Bit Mask
JMP SETSP6 ;Set Bits in Control Register
BRA SETSP6 ;Set Bits in Control Register
;getspu(index) - Get Sprite Width, Height, and Mode
;Args: A = Sprite Index
@ -344,7 +344,7 @@ GETSPU: STA TEMP0 ;Save Sprite Index
LDA TEMP0 ;Retrieve Sprite Index
JSR GETSPP ;Get Mode
TAX ;Return Mode in X
.DC $7A ;PLY Height in Y
PLY ;Height in Y
PLA ;and Width in A
RTS
@ -364,7 +364,7 @@ GETSPL: JSR GETSPU ;Get Width, Height, Mode and Execute GETSCL
;Affects: A
;Returns: Y,X = Data Size in Bytes
GETSCL: ;.DC $FF ;Debug
.DC $DA ;PHX Save Mode
PHX ;Save Mode
PHA ;Save Width
TYA ;Copy Height to Accumulator
JSR GETSCS ;Calculate Height in Pixles
@ -376,7 +376,7 @@ GETSLK: ASL TEMP1 ;Multiply LSB
ROL ;and MSB by 2
DEY ;Decrement Counter
BNE GETSLK ;and Loop if Not Zero
.DC $FA ;PLX Retrieve Mode
PLX ;Retrieve Mode
BNE GETSSK ;If 0 (4 Bits Per Pixel)
LSR ; Divide MSB
ROR TEMP1 ; snd LSB by 2
@ -444,7 +444,7 @@ SETSPW: PHA ;Save Sprite Index
LDX #$CF ;Set Bit Mask
TYA ;Copy Specifier to Accumulator
AND #$03 ;Isolate Bits 0 and 1
JMP SETSP4 ;Shift Left Four Bits and Write Masked
BRA SETSP4 ;Shift Left Four Bits and Write Masked
;setsph(index) - Set Sprite Height Specifier
;Args: A = Sprite Index
@ -458,7 +458,7 @@ SETSP4: ASL
ASL
ASL
ASL
JMP SETSP7 ;Write Masked to Size Register
BRA SETSP7 ;Write Masked to Size Register
;setspp(index) - Set Sprite Palette Offset
;Args: A = Sprite Index
@ -471,7 +471,7 @@ SETSP7: STA TEMP0 ;Save Value
STX TEMP1 ;Save Bit Mask
PLA ;Retrieve Sprite Index
JSR GETSPS ;Get Sprite Size Register
JMP SETSP8 ;Apply Mask, Set Bits, and Write
BRA SETSP8 ;Apply Mask, Set Bits, and Write
;setsps(index,value) - Set Sprite Attribute Size Register
;Args: A = Sprite Index

3
x16/x16.bat
View File

@ -9,7 +9,8 @@ ECHO Compiling File %1.c02 for Commander X16
..\c02.exe -h x16 -s x16 -s cbm %1 >%1.dbg
IF %ERRORLEVEL% NEQ 0 GOTO EOF
ECHO Assembling File %1.asm
C:\Programs\dasm %1.asm -f1 -o%1.prg -l%1.lst -s%1.sym
..\a02.exe -p %1.asm %1.asm %1.lst >%1.out
REM C:\Programs\dasm %1.asm -f1 -o%1.prg -l%1.lst -s%1.sym
IF %ERRORLEVEL% NEQ 0 GOTO EOF