-int process(int argc, char **argv) {
- int argno; // Argument number
- SYM *sy; // Pointer to a symbol record
- char *s; // String pointer
- int fd; // File descriptor
- char fnbuf[FNSIZ]; // Filename buffer
- int i; // Iterator
-
- errcnt = 0; // Initialise error count
- listing = 0; // Initialise listing level
- list_flag = 0; // Initialise listing flag
- verb_flag = perm_verb_flag; // Initialise verbose flag
- as68_flag = 0; // Initialise as68 kludge mode
- glob_flag = 0; // Initialise .globl flag
- sbra_flag = 0; // Initialise short branch flag
- debug = 0; // Initialise debug flag
- searchpath = NULL; // Initialise search path
- objfname = NULL; // Initialise object filename
- list_fname = NULL; // Initialise listing filename
- err_fname = NULL; // Initialise error filename
- obj_format = BSD; // Initialise object format
- firstfname = NULL; // Initialise first filename
- err_fd = ERROUT; // Initialise error file descriptor
- err_flag = 0; // Initialise error flag
- rgpu = 0; // Initialise GPU assembly flag
- rdsp = 0; // Initialise DSP assembly flag
- lsym_flag = 1; // Include local symbols in object file
- regbank = BANK_N; // No RISC register bank specified
- orgactive = 0; // Not in RISC org section
- orgwarning = 0; // No ORG warning issued
- a_amount = 0;
- segpadsize = 2; // Initialise segment padding size
- in_main = 0;
-
- // Initialise modules
- init_sym(); // Symbol table
- init_token(); // Tokenizer
- init_procln(); // Line processor
- init_expr(); // Expression analyzer
- init_sect(); // Section manager / code generator
- init_mark(); // Mark tape-recorder
- init_macro(); // Macro processor
- init_list(); // Listing generator
-
- // Process command line arguments and assemble source files
- for(argno = 0; argno < argc; ++argno) {
- if(*argv[argno] == '-') {
- switch(argv[argno][1]) {
- case 'd': // Define symbol
- case 'D':
- for(s = argv[argno] + 2; *s != EOS;) {
- if(*s++ == '=') {
- s[-1] = EOS;
- break;
- }
- }
- if(argv[argno][2] == EOS) {
- printf("-d: empty symbol\n");
- ++errcnt;
- return(errcnt);
- }
- sy = lookup(argv[argno] + 2, 0, 0);
- if(sy == NULL) {
- sy = newsym(argv[argno] + 2, LABEL, 0);
- sy->svalue = 0;
- }
- sy->sattr = DEFINED | EQUATED | ABS;
- if(*s)
- sy->svalue = (VALUE)atoi(s);
- else
- sy->svalue = 0;
- break;
- case 'e': // Redirect error message output
- case 'E':
- err_fname = argv[argno] + 2;
- break;
- case 'f': // -f<format>
- case 'F':
- switch(argv[argno][2]) {
- case EOS:
- case 'b': // -fb = BSD (Jaguar Recommended)
- case 'B':
- obj_format = BSD;
- break;
- default:
- printf("-f: unknown object format specified\n");
- ++errcnt;
- return(errcnt);
- }
- break;
- case 'g': // Debugging flag
- case 'G':
- printf("Debugging flag (-g) not yet implemented\n");
- break;
- case 'i': // Set directory search path
- case 'I':
- searchpath = argv[argno] + 2;
- break;
- case 'l': // Produce listing file
- case 'L':
- list_fname = argv[argno] + 2;
- listing = 1;
- list_flag = 1;
- ++lnsave;
- break;
- case 'o': // Direct object file output
- case 'O':
- if(argv[argno][2] != EOS) objfname = argv[argno] + 2;
- else {
- if(++argno >= argc) {
- printf("Missing argument to -o");
- ++errcnt;
- return(errcnt);
- }
- objfname = argv[argno];
- }
- break;
- case 'r': // Pad seg to requested boundary size
- case 'R':
- switch(argv[argno][2]) {
- case 'w': case 'W': segpadsize = 2; break;
- case 'l': case 'L': segpadsize = 4; break;
- case 'p': case 'P': segpadsize = 8; break;
- case 'd': case 'D': segpadsize = 16; break;
- case 'q': case 'Q': segpadsize = 32; break;
- default: segpadsize = 2; break; // Effective autoeven();
- }
- break;
- case 's': // Warn about possible short branches
- case 'S':
- sbra_flag = 1;
- break;
- case 'u': // Make undefined symbols .globl
- case 'U':
- glob_flag = 1;
- break;
- case 'v': // Verbose flag
- case 'V':
- verb_flag++;
- if(verb_flag > 1) display_version();
- break;
- case 'x': // Turn on debugging
- case 'X':
- debug = 1;
- printf("~ Debugging ON\n");
- break;
- case 'y': // -y<pagelen>
- case 'Y':
- pagelen = atoi(argv[argno] + 2);
- if(pagelen < 10) {
- printf("-y: bad page length\n");
- ++errcnt;
- return(errcnt);
- }
- break;
- case EOS: // Input is stdin
- if(firstfname == NULL) // Kludge first filename
- firstfname = defname;
- include(0, "(stdin)");
- assemble();
- break;
- case 'h': // Display command line usage
- case 'H':
- case '?':
- display_version();
- display_help();
- ++errcnt;
- break;
- default:
- display_version();
- printf("Unknown switch: %s\n\n", argv[argno]);
- display_help();
- ++errcnt;
- break;
- }
- } else {
- // Record first filename.
- if(firstfname == NULL)
- firstfname = argv[argno];
- strcpy(fnbuf, argv[argno]);
- fext(fnbuf, ".s", 0);
- fd = open(fnbuf, 0);
- if(fd < 0) {
- printf("Cannot open: %s\n", fnbuf);
- ++errcnt;
- continue;
- }
- include(fd, fnbuf);
- assemble();
- }
- }
-
- // Wind-up processing;
- // o save current section (no more code generation)
- // o do auto-even of all sections (or boundary alignment as requested through '-r')
- // o determine name of object file:
- // - "foo.o" for linkable output;
- // - "foo.prg" for GEMDOS executable (-p flag).
- savsect();
- for(i = TEXT; i <= BSS; i <<= 1) {
- switchsect(i);
- switch(segpadsize) {
- case 2: d_even(); break;
- case 4: d_long(); break;
- case 8: d_phrase(); break;
- case 16: d_dphrase(); break;
- case 32: d_qphrase(); break;
- }
- savsect();
- }
-
- if(objfname == NULL) {
- if(firstfname == NULL)
- firstfname = defname;
- strcpy(fnbuf, firstfname);
- //fext(fnbuf, prg_flag ? ".prg" : ".o", 1);
- fext(fnbuf, ".o", 1);
- objfname = fnbuf;
- }
-
- // With one pass finished, go back and:
- // (1) run through all the fixups and resolve forward references;
- // (1.5) ensure that remaining fixups can be handled by the linker
- // (`lo68' format, extended (postfix) format....)
- // (2) generate the output file image and symbol table;
- // (3) generate relocation information from left-over fixups.
- fixups(); // Do all fixups
- stopmark(); // Stop mark tape-recorder
- if(errcnt == 0) {
- if((fd = open(objfname, _OPEN_FLAGS, _PERM_MODE)) < 0)
- cantcreat(objfname);
- if(verb_flag) {
- s = "object";
- printf("[Writing %s file: %s]\n", s, objfname);
- }
- object((WORD)fd);
- close(fd);
- if(errcnt != 0)
- unlink(objfname);
- }
-
- if(list_flag) {
- if(verb_flag) printf("[Wrapping-up listing file]\n");
- listing = 1;
- symtable();
- close(list_fd);
- }
-
- if(err_flag)
- close(err_fd);
-
- DEBUG dump_everything();
-
- return(errcnt);
-}