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Added Usage output to a02.c

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Curtis F Kaylor 2019-11-16 12:18:37 -05:00
parent 1b061ec033
commit 14b689dc69
1 changed files with 57 additions and 46 deletions
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103
a02.c
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@ -9,7 +9,8 @@
#include <ctype.h>
#include "a02.h"
#define DEBUG TRUE
#define DEBUG FALSE
int debug; //Ouput Debug Info
enum otypes {BINFIL, PRGFIL}; //Object File Types
@ -58,6 +59,14 @@ FILE *outfil; //Output File Pointer
FILE *lstfil; //List File Pointer
FILE *incfil; //Include File Pointer
/* Print Usage Info and Exit */
void usage(char* appnam) {
printf("Usage: %s [opts] asmfile objfile [lstfile]\n");
printf(" Opts: -p - Commodore PRG format\n");
printf(" -d - Output Debug Info\n");
exit(EXIT_FAILURE);
}
/* Print Error Message and Exit */
void xerror(char* format, char *s) {
if (lineno) fprintf(stderr, "%04d: ", lineno);
@ -67,7 +76,7 @@ void xerror(char* format, char *s) {
/* Open File with Error Checking */
FILE * opnfil(char* name, char* mode) {
if (DEBUG) printf("Opening file '%s' with mode '%s'\n", name, mode);
if (debug) printf("Opening file '%s' with mode '%s'\n", name, mode);
FILE *fp = fopen(name, mode);
if (!fp) xerror("Error Opening File '%s'\n", name);
return fp;
@ -113,7 +122,7 @@ struct sym *fndsym(int block, char* name) {
/* Set Symbol Value and Size */
void setsym(int value, int bytes) {
if (DEBUG) printf("Setting Symbol %s to %d\n", symbol.name, value);
if (debug) printf("Setting Symbol %s to %d\n", symbol.name, value);
symbol.value = value;
if (bytes) symbol.bytes = bytes;
else symbol.bytes = (value > 0xFF) ? 2 : 1;
@ -132,17 +141,17 @@ void pfxstr(char c, char* s) {
* Updates: linptr
* Returns: Label Found (TRUE/FALSE) */
int plabel(void) {
if (DEBUG) puts("Parsing Label");
if (debug) puts("Parsing Label");
int block = (skpchr('.')) ? blknum : 0; //Local Label Block Number
int found = pword(FALSE, label); //Parse Word without Skipping Spaces
if (DEBUG) {
if (debug) {
if (found) printf("Found Label %s\n", label);
else puts("No Label Found");
}
skpchr(':'); //Skip Optional Label Terminator
if (found && passno == 1) {
if (label[0] && fndsym(block, label)) xerror("Duplicate Label %s Encountered\n", label);
if (DEBUG) printf("Initializing Symbol %s\n", label);
if (debug) printf("Initializing Symbol %s\n", label);
symbol.block = block;
if (strlen(label) > MAXLBL) xerror("Label %s Too Long\n", label);
strcpy(symbol.name, label);
@ -235,7 +244,7 @@ int evltrm() {
default: result = -1;
}
skpspc();
if (DEBUG) printf("Term Evaluated to %d\n", result);
if (debug) printf("Term Evaluated to %d\n", result);
return result;
}
@ -244,7 +253,7 @@ int evlopd(int maxsiz) {
int result = 0;
int hilo = 0; //Return LSB (1) or MSB (2)
int prns; //Optional Parenthesis after Hi/Low Operator
if (DEBUG) puts("Evaluating Operand");
if (debug) puts("Evaluating Operand");
skpspc();
if (cpychr('<')) hilo = 1;
else if (cpychr('>')) hilo = 2;
@ -264,7 +273,7 @@ int evlopd(int maxsiz) {
case 2: result = result >> 8; break; //MSB
}
}
if (DEBUG) printf("Operand Evaluated to %d\n", result);
if (debug) printf("Operand Evaluated to %d\n", result);
if (result > maxsiz) xerror("Operand Value too Large\n", "");
return result;
}
@ -286,14 +295,14 @@ void outwrd(int w) {
/* Lookup Opcode */
int lkpopc(struct opc opl[]) {
if (DEBUG) printf("Looking up Mnemonic %s\n", mnmnc);
if (debug) printf("Looking up Mnemonic %s\n", mnmnc);
token = 0xFF; //Set Token to Invalid
char mne[5]; strncpy(mne, mnmnc, 4); mne[4] = 0; //Truncate Mnemonic to Four Characters
for (int i=0; opl[i].name[0]; i++) {
if (strcmp(opl[i].name, mne)) continue;
token = opl[i].token;
amode = opl[i].amode;
if (DEBUG) printf("Found token %02X, amode %04X\n", token, amode);
if (debug) printf("Found token %02X, amode %04X\n", token, amode);
return TRUE;
}
return FALSE;
@ -301,7 +310,7 @@ int lkpopc(struct opc opl[]) {
/* Assemble BYTE Pseudo-Op */
void asmbyt(void) {
if (DEBUG) puts("Assembling BYTE Pseudo-Op");
if (debug) puts("Assembling BYTE Pseudo-Op");
do {
if (cpychr('"')) { //String Operand
while (!cpychr('"')) {outbyt(*linptr); cpychr(0); }
@ -313,7 +322,7 @@ void asmbyt(void) {
/* Assemble HEX Pseudo-Op */
void asmhex(void) {
if (DEBUG) puts("Assembling HEX Pseudo-Op");
if (debug) puts("Assembling HEX Pseudo-Op");
do {outbyt(evlhex(0xFF)); } while (cpychr(','));
}
@ -326,19 +335,19 @@ void asmwrd(void) {
/* Assemble FILL Pseudo-Op */
void asmaln(void) {
if (DEBUG) puts("Assembling ALIGN Pseudo-Op");
if (debug) puts("Assembling ALIGN Pseudo-Op");
int size = evlopd(0xFFFF); if (size < 2) return;
if (DEBUG) printf("Aligning to %d Bytes\n", size);
if (debug) printf("Aligning to %d Bytes\n", size);
int fill = size - (curadr % size); if (fill == size) return;
if (DEBUG) printf("Filling %d Bytes\n", fill);
if (debug) printf("Filling %d Bytes\n", fill);
for (int i=0; i<fill; i++) outbyt(0);
}
/* Assemble FILL Pseudo-Op */
void asmfll(void) {
if (DEBUG) puts("Assembling FILL Pseudo-Op");
if (debug) puts("Assembling FILL Pseudo-Op");
int size = evlopd(0xFFFF);
if (DEBUG) printf("Filling %d Bytes\n", size);
if (debug) printf("Filling %d Bytes\n", size);
for (int i=0; i<size; i++) outbyt(0);
}
@ -365,23 +374,23 @@ void asmorg(void) {
void asmprc(void) {
skpspc();
while (isalnum(*linptr)) cpychr(0);
if (DEBUG) printf("Ignoring Operand %s\n", oprnd);
if (debug) printf("Ignoring Operand %s\n", oprnd);
}
/* Assemble SUBROUTINE Pseudo-Op */
void asmsub(void) {
blknum++;
sprintf(oprnd, "%d", blknum); opridx = strlen(oprnd);
if (DEBUG) printf("Block Number set to %s\n", oprnd);
if (debug) printf("Block Number set to %s\n", oprnd);
}
/* Assemble INCLUDE Pseudo-Op */
void asminf(void) {
int incidx = 0;
if (DEBUG) puts("Assembling INCLUDE Pseudo-Op");
if (debug) puts("Assembling INCLUDE Pseudo-Op");
if (incfil) xerror("Nested INCLUDE not Allowed", "");
if (!cpychr('"')) xerror("File Name Must be Quoted", "");
printf("%d: '%c'\n", linptr, *linptr);
printf("%d: '%p'\n", linptr, *linptr);
while (*linptr && !cpychr('"')) {
char c = *linptr; if (c == '/') c = '\\'; //Reverse Slashes for DOS/Windows
incnam[incidx++] = c;
@ -389,7 +398,7 @@ void asminf(void) {
}
incnam[incidx] = 0; //Terminate Include Name
if (incidx == 0) xerror("INCLUDE requires file name\n", "");
if (DEBUG) printf("Include File Set to Name to ''\n", incnam);
if (debug) printf("Include File Set to Name to ''\n", incnam);
}
/* Assemble END Pseudo-Op */
@ -401,7 +410,7 @@ void asmend(void) {
int asmpso(int dot) {
if (lkpopc(psolst) == FALSE && dot == FALSE) return FALSE;
skpspc();
if (DEBUG) printf("Assembling Pseudo-Op %s, Token '%c'\n", mnmnc, token);
if (debug) printf("Assembling Pseudo-Op %s, Token '%c'\n", mnmnc, token);
switch (token) {
case '=': asmequ(); break; //EQU
case 'B': asmbyt(); break; //BYTE
@ -425,7 +434,7 @@ int chkmod(int mode) {
char* s = NULL; //Pointer to Addressing Mode Description
for (int i=0; amdesc[i].amode; i++)
if (amdesc[i].amode == mode) {s = amdesc[i].desc; break;}
if (DEBUG) printf("Checking Addressing Mode %s, %04X against %04X\n", s, mode, amode);
if (debug) printf("Checking Addressing Mode %s, %04X against %04X\n", s, mode, amode);
if (mode & amode) return TRUE;
xerror("Invalid Addressing Mode %s", s);
}
@ -433,7 +442,7 @@ int chkmod(int mode) {
/* Assemble Branch Opcode */
void asmbrn(void) {
int offset = 0;
if (DEBUG) printf("Assembling Branch Opcode Token 0x%02X\n", token);
if (debug) printf("Assembling Branch Opcode Token 0x%02X\n", token);
zpage = TRUE;
if (isalpha(*linptr) || *linptr =='.') {
struct sym *target = evlsym();
@ -444,13 +453,13 @@ void asmbrn(void) {
else xerror("Illegal Branch Operand\n", "");
if ((offset > 127 || offset < -128) && passno == 2)
xerror("Branch Out of Range\n", "");
if (DEBUG) printf("Branch Offset %d\n", offset);
if (debug) printf("Branch Offset %d\n", offset);
opval = offset & 0xFF;
}
/* Assemble Immediate Mode Instruction */
void asmimd(void) {
if (DEBUG) printf("Assembling Immediate Opcode Token 0x%02X\n", token);
if (debug) printf("Assembling Immediate Opcode Token 0x%02X\n", token);
opval = evlopd(0xFF);
zpage = TRUE;
opmod = 0x08; //Immediate
@ -458,7 +467,7 @@ void asmimd(void) {
/* Assemble Indirect Mode Instruction */
void asmind(void) {
if (DEBUG) puts("Assembling Indirect Mode Instruction");
if (debug) puts("Assembling Indirect Mode Instruction");
zpage = TRUE; opval = evlopd(0xFFFF);
if (cpychr(',') && cpychr('X') && chkmod(INDCX)) cpychr(')'); ////(Indirect,X) opmod=0
else if (cpychr(')')) {
@ -478,7 +487,7 @@ void asmiaz(void) {
if (chkmod(ACMLT)) opmod = 0x08; //Accumulator
return;
}
if (DEBUG) printf("Assembling Absolute/ZeroPage 0x%02X\n", token);
if (debug) printf("Assembling Absolute/ZeroPage 0x%02X\n", token);
zpage = (opval <= 0xff) ? TRUE : FALSE;
if (zpage && chkmod(ZPAGE)) opmod = 0x04; //ZeroPage
else if (chkmod(ABSLT)) opmod = 0x0C; //Absolute
@ -496,16 +505,16 @@ void asmiaz(void) {
/* Fix Opcode (if needed) */
unsigned char fixopc(void) {
if (DEBUG) printf("Fixing OpCode $%02X+$%02X\n", token, opmod);
if (debug) printf("Fixing OpCode $%02X+$%02X\n", token, opmod);
for (int i=0; opfix[i].token; i++)
if (opfix[i].token == token && opfix[i].opmod == opmod)
return opfix[i].opcode;
return token + opmod;
}
/* Ouput Opcode Debug Info */
/* Ouput Opcode debug Info */
void dbgopc(void) {
if (DEBUG) printf("token=$%02X, opmod=$%02X, Address Mode: ", token, opmod);
if (debug) printf("token=$%02X, opmod=$%02X, Address Mode: ", token, opmod);
switch (opmod) {
case 0x00: if (amode == IMPLD) puts("Implied"); else puts("(Indirect,X)"); break;
case 0x08: if (opval < 0) puts("Accumulator"); else puts("#Immediate"); break;
@ -531,16 +540,16 @@ int asmopc(int dot) {
opmod = 0;
if (asmpso(dot)) return TRUE; //Check For/Assemble Pseudo-Op
if (lkpopc(opclst) == FALSE) xerror("Invalid Mnemonic %s\n", mnmnc);
if (DEBUG) printf("Assembling Opcode Token 0x%02X, ", token);
if (DEBUG) printf("Addressing Mode Mask 0x%04X\n", amode);
if (debug) printf("Assembling Opcode Token 0x%02X, ", token);
if (debug) printf("Addressing Mode Mask 0x%04X\n", amode);
skpspc();
if (amode == RELTV) asmbrn(); //Branch (Relative) Instruction
else if (cpychr('#')) asmimd(); //Assemble Implied Instruction
else if (cpychr('(')) asmind(); //Assemble Indirect Instruction
else asmiaz(); //Assemble Implied/Accumulator/Absolute/ZeroPage Instruction
if (DEBUG) dbgopc();
if (debug) dbgopc();
int opcode = fixopc();
if (DEBUG) printf("Writing OpCode $%02X\n", opcode);
if (debug) printf("Writing OpCode $%02X\n", opcode);
outbyt(opcode);
if (opval >= 0) {
if (zpage) outbyt(opval); //Byte Operand
@ -554,7 +563,7 @@ int asmopc(int dot) {
* Updates: linptr
* Returns: Label Found (TRUE/FALSE) */
int pmnmnc(void) {
if (DEBUG) puts("Parsing Mnemonic");
if (debug) puts("Parsing Mnemonic");
int dot = cpychr('.'); //Optional Dot before Pseudo-Op
int found = pword(TRUE, mnmnc);
opridx = 0; //Initialize Operand Index
@ -571,7 +580,7 @@ void pcmmnt(void) {
int i = 0;
while (*linptr >= ' ') cmmnt[i++] = *linptr++;
cmmnt[i] = 0; //Terminate Comment
if (DEBUG) {if (i) printf("Comment: %s\n"); else puts("No Comment Found");}
if (debug) {if (i) printf("Comment: %s\n", cmmnt); else puts("No Comment Found");}
}
/* Add Label to Symbol Table */
@ -583,7 +592,7 @@ void addsym() {
/* Open Include File */
void opninc(void) {
if (DEBUG) printf("Opening Include File %s\n", incnam);
if (debug) printf("Opening Include File %s\n", incnam);
if (lstfil) fputs("\n", lstfil);
incfil = opnfil(incnam, "r");
savlno = lineno;
@ -592,7 +601,7 @@ void opninc(void) {
/* Close Include File */
void clsinc(void) {
if (DEBUG) printf("Closing Include File %s\n", incnam);
if (debug) printf("Closing Include File %s\n", incnam);
if (lstfil) fputs("\n", lstfil);
fclose(incfil);
incfil = NULL;
@ -609,7 +618,7 @@ void clsinc(void) {
void asmfil(int pass) {
endasm = FALSE; //Reset End Assembly Flag
passno = pass; //Assembly Pass Number
if (DEBUG) printf("Assembling Pass %d\n", pass);
if (debug) printf("Assembling Pass %d\n", pass);
lineno = 1; //Initialize Input File Line Number
blknum = 1; //Initialize Local Block Number
orgadr = -1; //Origin Address Not Set
@ -619,7 +628,7 @@ void asmfil(int pass) {
if (incfil) linptr = fgets(inplin, MAXSTR, incfil);
else linptr = fgets(inplin, MAXSTR, inpfil);
if (endasm || linptr == NULL) {if (incfil) {clsinc(); continue;} else break;}
if (DEBUG) printf("%05d %04X: %s", lineno, curadr, inplin);
if (debug) printf("%05d %04X: %s", lineno, curadr, inplin);
lstadr = curadr; //Set List Address
mcode[0] = 0; //Clear Generated Macbine Code
plabel(); //Parse Label
@ -649,8 +658,9 @@ void prtsym(void) {
int pcoptn(char *argval) {
if (argval[0] != '-') return FALSE;
char option = toupper(argval[1]);
if (DEBUG) printf(" Option '%c'\n", option);
if (debug) printf(" Option '%c'\n", option);
switch(option) {
case 'D': debug = TRUE; break; //Enable debug Output
case 'P': objtyp = PRGFIL; break; //Commodore PRG File
default: xerror("Illegal Command Line Option %s\n", argval);
}
@ -661,7 +671,7 @@ int pcoptn(char *argval) {
void pcargs(int argc, char *argv[]) {
int argnum = 0;
for (int arg = 0; arg<argc; arg++) {
if (DEBUG) printf("Arg %d='%s'\n", arg, argv[arg]);
if (debug) printf("Arg %d='%s'\n", arg, argv[arg]);
if (arg == 0) {strcpy(prgnam, argv[arg]); continue;}
if (pcoptn(argv[arg])) continue;
switch (argnum++) {
@ -671,10 +681,11 @@ void pcargs(int argc, char *argv[]) {
default: xerror("Too Many Arguments\n", "");
}
}
///if (argnum<2) usage();
if (argnum<2) usage(argv[0]);
}
int main(int argc, char *argv[]) {
debug = DEBUG; //Initialize Debug Flag
lstnam[0] = 0; lstfil = NULL; //Default to No List File
incnam[0] = 0; incfil = NULL; //Include File Not Opened
lineno = 0; //No Line Number (yet)