void simpencil(struct pencil *p) { struct pencilseg *tail = p->psegtail; if (tail && tail->tick == p->usr->gm->tick) { addsegment(p->usr->gm, &tail->seg); if (SEND_SEGMENTS) queueseg(p->usr->gm, &tail->seg); if (tail->prev) { tail->prev->nxt = 0; p->psegtail = tail->prev; } else p->psegtail = p->pseghead = 0; free(tail); } }
int main(int argc, char *argv[]) { /* SET UP TABLES ETC */ mktoktbl(); /* END: SET UP TABLES ETC */ /* PARSE ARGUMENTS */ int ninbas=0; char **inbas=NULL; int ninobj=0; char **inobj=NULL; enum {NONE, OBJ, TAPE} outtype=NONE; char *outfile=NULL; bool emu=false; int arg; int state=0; for(arg=1;arg<argc;arg++) { char *varg=argv[arg]; if(strcmp(varg, "-")==0) varg="/dev/stdin"; if(*varg=='-') { if(strcmp(varg, "-V")==0) { printf(VERSION_MSG); return(EXIT_SUCCESS); } else if(strcmp(varg, "--emu")==0) { emu=true; } else if(strcmp(varg, "--no-emu")==0) { emu=false; } else if(strcmp(varg, "--debug")==0) { debug=true; } else if(strcmp(varg, "--no-debug")==0) { debug=false; } else if(strcmp(varg, "-b")==0) state=1; else if(strcmp(varg, "-l")==0) state=7; else if(strcmp(varg, "-t")==0) state=2; else if(strcmp(varg, "-W")==0) state=3; else if(strcmp(varg, "-W-")==0) state=4; else if(strcmp(varg, "-O")==0) state=5; else if(strcmp(varg, "-O-")==0) state=6; else { fprintf(stderr, "bast: No such option %s\n", varg); return(EXIT_FAILURE); } } else { bool flag=false; switch(state) { case 0: case 1: if(addinbas(&ninbas, &inbas, varg)) { fprintf(stderr, "bast: Internal error: Failed to add %s to inbas list\n", varg); return(EXIT_FAILURE); } state=0; break; case 7: if(addinbas(&ninobj, &inobj, varg)) { fprintf(stderr, "bast: Internal error: Failed to add %s to inobj list\n", varg); return(EXIT_FAILURE); } state=0; break; case 2: outtype=TAPE; outfile=strdup(varg); state=0; break; case 3: flag=true; // fallthrough case 4: if(strcmp("all", varg)==0) { Wobjlen=flag; state=0; } else if(strcmp("object-length", varg)==0) { Wobjlen=flag; state=0; } else if(strcmp("object-checksum", varg)==0) { Wobjsum=flag; state=0; } else if(strcmp("se-basic", varg)==0) { Wsebasic=flag; state=0; } else if(strcmp("embedded-newline", varg)==0) { Wembeddednewline=flag; state=0; } break; case 5: flag=true; // fallthrough case 6: if(strcmp("cut-numbers", varg)==0) { Ocutnumbers=flag; state=0; } break; default: fprintf(stderr, "bast: Internal error: Bad state %u in args\n", state); return(EXIT_FAILURE); break; } } } /* END: PARSE ARGUMENTS */ if(!(ninbas||ninobj)) { fprintf(stderr, "bast: No input files specified\n"); return(EXIT_FAILURE); } if((outtype==NONE)||!outfile) { fprintf(stderr, "bast: No output file specified\n"); return(EXIT_FAILURE); } int nsegs=0; segment * data=NULL; /* READ BASIC FILES */ if(ninbas&&!inbas) { fprintf(stderr, "bast: Internal error: ninbas!=0 and inbas is NULL\n"); return(EXIT_FAILURE); } int fbas; for(fbas=0;fbas<ninbas;fbas++) { int fline=0; int dfl=0; FILE *fp=fopen(inbas[fbas], "r"); if(!fp) { fprintf(stderr, "bast: Failed to open input file %s\n", inbas[fbas]); return(EXIT_FAILURE); } segment *curr=addsegment(&nsegs, &data); if(!curr) { fprintf(stderr, "bast: Internal error: failed to add segment for file %s\n", inbas[fbas]); return(EXIT_FAILURE); } curr->name=(char *)malloc(10); sprintf(curr->name, "bas%u", fbas); curr->type=BASIC; curr->data.bas.nlines=0; curr->data.bas.basic=NULL; curr->data.bas.line=0; curr->data.bas.lline=NULL; curr->data.bas.renum=0; curr->data.bas.block=NULL; while(!feof(fp)) { char *line=fgetl(fp); if(line) { fline+=dfl+1; dfl=0; if(*line) { while(line[strlen(line)-1]=='\\') // line splicing { char *second=fgetl(fp); if(!second) continue; dfl++; if(!*second) { free(second); continue; } line[strlen(line)-1]=0; char *splice=(char *)realloc(line, strlen(line)+strlen(second)+2); if(!splice) { free(second); continue; } line=splice; strcat(splice, second); free(second); } if(Wembeddednewline && strchr(line, '\x0D')) // 0x0D is newline in ZX BASIC { fprintf(stderr, "bast: Warning: embedded newline (\\0D) in ZX Basic line\n\t"LOC"\n", LOCARG); } if(addbasline(&curr->data.bas.nlines, &curr->data.bas.basic, line)) { fprintf(stderr, "bast: Internal error: Failed to store line as text\n\t"LOC"\n", LOCARG); return(EXIT_FAILURE); } curr->data.bas.basic[curr->data.bas.nlines-1].sline=fline; if(*line=='#') { char *cmd=strtok(line, " "); if(cmd) { if(strcmp(cmd, "#pragma")==0) { char *prgm=strtok(NULL, " "); if(prgm) { if(strcmp(prgm, "name")==0) { char *basname=strtok(NULL, ""); if(basname) { if(curr->name) free(curr->name); curr->name=strdup(basname); } } else if(strcmp(prgm, "line")==0) { char *pline=strtok(NULL, ""); if(pline) { unsigned int val; if(sscanf(pline, "%u", &val)==1) { curr->data.bas.line=val; } else { curr->data.bas.line=-1; curr->data.bas.lline=strdup(pline); } } else { fprintf(stderr, "bast: Warning: #pragma line missing argument\n\t"LOC"\n", LOCARG); } } else if(strcmp(prgm, "renum")==0) { curr->data.bas.renum=1; curr->data.bas.rnstart=0; curr->data.bas.rnoffset=0; curr->data.bas.rnend=0; char *arg=strtok(NULL, " "); while(arg) { unsigned int val=0; if(*arg) sscanf(arg+1, "%u", &val); switch(*arg) { case '=': curr->data.bas.rnstart=val; break; case '+': curr->data.bas.rnoffset=val; break; case '-': curr->data.bas.rnend=val; break; default: fprintf(stderr, "bast: Warning: #pragma renum bad argument %s\n\t"LOC"\n", arg, LOCARG); break; } arg=strtok(NULL, " "); } } else { fprintf(stderr, "bast: Warning: #pragma %s not recognised (ignoring)\n\t"LOC"\n", prgm, LOCARG); } } else { fprintf(stderr, "bast: #pragma without identifier\n\t"LOC"\n", LOCARG); return(EXIT_FAILURE); } } else if(strcmp(cmd, "##")==0) { // comment, ignore } else { fprintf(stderr, "bast: Unrecognised directive %s\n\t"LOC"\n", cmd, LOCARG); return(EXIT_FAILURE); } } } } free(line); } } fprintf(stderr, "bast: BASIC segment '%s', read %u physical lines\n", curr->name, curr->data.bas.nlines); } /* END: READ BASIC FILES */ /* READ OBJECT FILES */ int fobj; for(fobj=0;fobj<ninobj;fobj++) { FILE *fp=fopen(inobj[fobj], "r"); if(!fp) { fprintf(stderr, "bast: Failed to open input file %s\n", inobj[fobj]); return(EXIT_FAILURE); } segment *curr=addsegment(&nsegs, &data); if(!curr) { fprintf(stderr, "bast: Internal error: failed to add segment for file %s\n", inobj[fobj]); return(EXIT_FAILURE); } curr->name=(char *)malloc(10); sprintf(curr->name, "bin%u", fobj); curr->type=BINARY; err=false; bin_load(inobj[fobj], fp, &curr->data.bin, &curr->name); if(err) { fprintf(stderr, "bast: Failed to load BINARY segment from file %s\n", inobj[fobj]); return(EXIT_FAILURE); } } /* END: READ OBJECT FILES */ /* TODO: fork the assembler for each #[r]asm/#endasm block */ /* TOKENISE BASIC SEGMENTS */ if(ninbas) { int i; for(i=0;i<nsegs;i++) { if(data[i].type==BASIC) { data[i].data.bas.blines=0; fprintf(stderr, "bast: Tokenising BASIC segment %s\n", data[i].name); int j; for(j=0;j<data[i].data.bas.nlines;j++) { err=false; if(debug) fprintf(stderr, "bast: tokenising line %s\n", data[i].data.bas.basic[j].text); tokenise(&data[i].data.bas.basic[j], inbas, i, data[i].data.bas.renum); if(data[i].data.bas.basic[j].ntok) data[i].data.bas.blines++; if(err) return(EXIT_FAILURE); } fprintf(stderr, "bast: Tokenised BASIC segment %s (%u logical lines)\n", data[i].name, data[i].data.bas.blines); } } } /* END: TOKENISE BASIC SEGMENTS */ /* LINKER & LABELS */ // PASS 1: Find labels, renumber labelled BASIC sources, load in !links as attached bin_segs int nlabels=0; label * labels=NULL; int i; for(i=0;i<nsegs;i++) { fprintf(stderr, "bast: Linker (Pass 1): %s\n", data[i].name); switch(data[i].type) { case BASIC:; int num=0,dnum=0; if(data[i].data.bas.renum==1) { dnum=data[i].data.bas.rnoffset?data[i].data.bas.rnoffset:10; int end=data[i].data.bas.rnend?data[i].data.bas.rnend:9999; while(data[i].data.bas.blines*dnum>end) { dnum--; if((dnum==7)||(dnum==9)) dnum--; } if(!dnum) { fprintf(stderr, "bast: Renumber: Couldn't fit %s into available lines\n", data[i].name); return(EXIT_FAILURE); } num=data[i].data.bas.rnstart?data[i].data.bas.rnstart:dnum; fprintf(stderr, "bast: Renumber: BASIC segment %s, start %u, spacing %u, end <=%u\n", data[i].name, num, dnum, end); } int dl; init_char(&data[i].data.bas.block, &dl, (int *)&data[i].data.bas.blen); int last=0; int j; for(j=0;j<data[i].data.bas.nlines;j++) { if(data[i].data.bas.basic[j].ntok) { if(num) { if(data[i].data.bas.renum!=1) { fprintf(stderr, "bast: Linker (Pass 1): Internal error (num!=0 but renum!=1), %s\n", data[i].name); return(EXIT_FAILURE); } data[i].data.bas.basic[j].number=num; num+=dnum; } else { if(data[i].data.bas.renum) { fprintf(stderr, "bast: Linker (Pass 1): Internal error (num==0 but renum!=0), %s\n", data[i].name); return(EXIT_FAILURE); } while(last<nlabels) { labels[last].sline=j; labels[last++].line=data[i].data.bas.basic[j].number; } } int k; for(k=0;k<data[i].data.bas.basic[j].ntok;k++) { if(data[i].data.bas.basic[j].tok[k].tok==TOKEN_RLINK) { if(data[i].data.bas.basic[j].tok[k].data) { FILE *fp=fopen(data[i].data.bas.basic[j].tok[k].data, "rb"); if(fp) { data[i].data.bas.basic[j].tok[k].data2=(char *)malloc(sizeof(bin_seg)); err=false; bin_load(data[i].data.bas.basic[j].tok[k].data, fp, (bin_seg *)data[i].data.bas.basic[j].tok[k].data2, NULL); if(err) { fprintf(stderr, "bast: Linker: failed to attach BINARY segment\n\t%s:%u\n", data[i].name, j); return(EXIT_FAILURE); } } else { fprintf(stderr, "bast: Linker: failed to open rlinked file %s\n\t%s:%u\n", data[i].data.bas.basic[j].tok[k].data, data[i].name, j); return(EXIT_FAILURE); } } else { fprintf(stderr, "bast: Linker: Internal error: TOKEN_RLINK without filename\n\t%s:%u", data[i].name, j); return(EXIT_FAILURE); } } } } else if(*data[i].data.bas.basic[j].text=='.') { if(isvalidlabel(data[i].data.bas.basic[j].text+1)) { label lbl; lbl.text=strdup(data[i].data.bas.basic[j].text+1); lbl.seg=i; lbl.line=num; lbl.sline=j; addlabel(&nlabels, &labels, lbl); } } } buildbas(&data[i].data.bas, false); if(data[i].data.bas.blen==-1) { fprintf(stderr, "bast: Failed to link BASIC segment %s\n", data[i].name); return(EXIT_FAILURE); } if(data[i].data.bas.renum) data[i].data.bas.renum=2; break; case BINARY: // TODO: export symbol table (we don't have symbols in object files yet) // Nothing else on pass 1 break; default: fprintf(stderr, "bast: Linker: Internal error: Bad segment-type %u\n", data[i].type); return(EXIT_FAILURE); break; } } // PASS 2: Replace labels with the linenumbers/addresses to which they point for(i=0;i<nsegs;i++) { fprintf(stderr, "bast: Linker (Pass 2): %s\n", data[i].name); switch(data[i].type) { case BASIC: if(data[i].data.bas.line<0) { if(!data[i].data.bas.lline) { fprintf(stderr, "bast: Linker: Internal error: line<0 but lline=NULL, %s\n", data[i].name); return(EXIT_FAILURE); } int l; for(l=0;l<nlabels;l++) { // TODO limit label scope to this file & the files it has #imported if((data[labels[l].seg].type==BASIC) && (strcmp(data[i].data.bas.lline, labels[l].text)==0)) { data[i].data.bas.line=labels[l].line; break; } } if(l==nlabels) { fprintf(stderr, "bast: Linker: Undefined label %s\n\t%s:#pragma line\n", data[i].data.bas.lline, data[i].name); return(EXIT_FAILURE); } } int j; for(j=0;j<data[i].data.bas.nlines;j++) { int k; for(k=0;k<data[i].data.bas.basic[j].ntok;k++) { if(data[i].data.bas.basic[j].tok[k].tok==TOKEN_LABEL) { int l; for(l=0;l<nlabels;l++) { // TODO limit label scope to this file & the files it has #imported if((data[labels[l].seg].type==BASIC) && (strcmp(data[i].data.bas.basic[j].tok[k].data, labels[l].text)==0)) { if(debug) fprintf(stderr, "bast: Linker: expanded %%%s", data[i].data.bas.basic[j].tok[k].data); if(data[i].data.bas.basic[j].tok[k].index) { if(debug) fprintf(stderr, "%s%02x", data[i].data.bas.basic[j].tok[k].index>0?"+":"-", abs(data[i].data.bas.basic[j].tok[k].index)); } data[i].data.bas.basic[j].tok[k].tok=TOKEN_ZXFLOAT; if(Ocutnumbers) { data[i].data.bas.basic[j].tok[k].data=strdup("."); if(debug) fprintf(stderr, " to %u (cut)\n", labels[l].line+data[i].data.bas.basic[j].tok[k].index); } else { data[i].data.bas.basic[j].tok[k].data=(char *)malloc(6); sprintf(data[i].data.bas.basic[j].tok[k].data, "%05u", labels[l].line+data[i].data.bas.basic[j].tok[k].index); if(debug) fprintf(stderr, " to %s\n", data[i].data.bas.basic[j].tok[k].data); } data[i].data.bas.basic[j].tok[k].data2=(char *)malloc(6); zxfloat(data[i].data.bas.basic[j].tok[k].data2, labels[l].line+data[i].data.bas.basic[j].tok[k].index); break; } } if(l==nlabels) { fprintf(stderr, "bast: Linker: Undefined label %s\n\t"LOC"\n", data[i].data.bas.basic[j].tok[k].data, data[i].name, j); return(EXIT_FAILURE); } } else if(data[i].data.bas.basic[j].tok[k].tok==TOKEN_PTRLBL) { int l; for(l=0;l<nlabels;l++) { // TODO limit label scope to this file & the files it has #imported if((data[labels[l].seg].type==BASIC) && (strcmp(data[i].data.bas.basic[j].tok[k].data, labels[l].text)==0)) { if(debug) fprintf(stderr, "bast: Linker: expanded @%s", data[i].data.bas.basic[j].tok[k].data); if(data[i].data.bas.basic[j].tok[k].index) { if(debug) fprintf(stderr, "%s%02x", data[i].data.bas.basic[j].tok[k].index>0?"+":"-", abs(data[i].data.bas.basic[j].tok[k].index)); } data[i].data.bas.basic[j].tok[k].tok=TOKEN_ZXFLOAT; if(Ocutnumbers) { data[i].data.bas.basic[j].tok[k].data=strdup("."); if(debug) fprintf(stderr, " to %u (cut)\n", (unsigned int)data[labels[l].seg].data.bas.basic[labels[l].sline].offset+data[i].data.bas.basic[j].tok[k].index); } else { data[i].data.bas.basic[j].tok[k].data=(char *)malloc(6); sprintf(data[i].data.bas.basic[j].tok[k].data, "%05u", (unsigned int)data[labels[l].seg].data.bas.basic[labels[l].sline].offset+data[i].data.bas.basic[j].tok[k].index); if(debug) fprintf(stderr, " to %s\n", data[i].data.bas.basic[j].tok[k].data); } data[i].data.bas.basic[j].tok[k].data2=(char *)malloc(6); zxfloat(data[i].data.bas.basic[j].tok[k].data2, data[labels[l].seg].data.bas.basic[labels[l].sline].offset+data[i].data.bas.basic[j].tok[k].index); break; } } if(l==nlabels) { fprintf(stderr, "bast: Linker: Undefined label %s\n\t"LOC"\n", data[i].data.bas.basic[j].tok[k].data, data[i].name, j); return(EXIT_FAILURE); } } } } break; case BINARY: if(data[i].data.bin.nbytes) { int j; for(j=0;j<data[i].data.bin.nbytes;j++) { switch(data[i].data.bin.bytes[j].type) { case BYTE: // do nothing break; // TODO LBL, LBM (labelpointer parsing) default: fprintf(stderr, "bast: Linker: Bad byte-type %u\n\t%s+0x%04X\n", data[i].data.bin.bytes[j].type, data[i].name, j); return(EXIT_FAILURE); break; } } } break; default: fprintf(stderr, "bast: Linker: Internal error: Bad segment-type %u\n", data[i].type); return(EXIT_FAILURE); break; } } fprintf(stderr, "bast: Linker passed all segments\n"); /* END: LINKER & LABELS */ /* CREATE OUTPUT */ switch(outtype) { case TAPE: fprintf(stderr, "bast: Creating TAPE output\n"); if(nsegs) { FILE *fout=fopen(outfile, "wb"); if(!fout) { fprintf(stderr, "bast: Could not open output file %s for writing!\n", outfile); return(EXIT_FAILURE); } int i; for(i=0;i<nsegs;i++) { // write header fputc(0x13, fout); fputc(0x00, fout); unsigned char cksum=0; fputc(0x00, fout); // HEADER int j; char name[10]; switch(data[i].type) { case BASIC: fputc(0, fout); // PROGRAM memset(name, ' ', 10); memcpy(name, data[i].name, min(10, strlen(data[i].name))); for(j=0;j<10;j++) { fputc(name[j], fout); cksum^=name[j]; } buildbas(&data[i].data.bas, true); if(data[i].data.bas.blen==-1) { fprintf(stderr, "bast: Failed to link BASIC segment %s\n", data[i].name); return(EXIT_FAILURE); } fputc(data[i].data.bas.blen, fout); cksum^=data[i].data.bas.blen&0xFF; fputc(data[i].data.bas.blen>>8, fout); cksum^=data[i].data.bas.blen>>8; if(data[i].data.bas.line) // Parameter 1 = autostart line { fputc(data[i].data.bas.line, fout); cksum^=data[i].data.bas.line&0xFF; fputc(data[i].data.bas.line>>8, fout); cksum^=data[i].data.bas.line>>8; } else // Parameter 1 = 0xFFFF { fputc(0xFF, fout); fputc(0xFF, fout); } // Parameter 2 = data[i].data.bas.blen fputc(data[i].data.bas.blen, fout); cksum^=data[i].data.bas.blen&0xFF; fputc(data[i].data.bas.blen>>8, fout); cksum^=data[i].data.bas.blen>>8; fputc(cksum, fout); // write data block fputc((data[i].data.bas.blen+2), fout); fputc((data[i].data.bas.blen+2)>>8, fout); fputc(0xFF, fout); // DATA cksum=0xFF; for(j=0;j<data[i].data.bas.blen;j++) { fputc(data[i].data.bas.block[j], fout); cksum^=data[i].data.bas.block[j]; } fputc(cksum, fout); free(data[i].data.bas.block); break; case BINARY: fputc(3, fout); // CODE cksum^=3; memset(name, ' ', 10); memcpy(name, data[i].name, min(10, strlen(data[i].name))); for(j=0;j<10;j++) { fputc(name[j], fout); cksum^=name[j]; } fputc(data[i].data.bin.nbytes, fout); cksum^=data[i].data.bin.nbytes&0xFF; fputc(data[i].data.bin.nbytes>>8, fout); cksum^=data[i].data.bin.nbytes>>8; // Parameter 1 = address fputc(data[i].data.bin.org, fout); cksum^=data[i].data.bin.org&0xFF; fputc(data[i].data.bin.org>>8, fout); cksum^=data[i].data.bin.org>>8; // Parameter 2 = 0x8000 fputc(0x00, fout); fputc(0x80, fout); cksum^=0x80; fputc(cksum, fout); // write data block fputc((data[i].data.bin.nbytes+2), fout); fputc((data[i].data.bin.nbytes+2)>>8, fout); fputc(0xFF, fout); // DATA cksum=0xFF; for(j=0;j<data[i].data.bin.nbytes;j++) { fputc(data[i].data.bin.bytes[j].byte, fout); cksum^=data[i].data.bin.bytes[j].byte; } fputc(cksum, fout); free(data[i].data.bin.bytes); break; default: fprintf(stderr, "bast: Internal error: Don't know how to make TAPE output of segment type %u\n", data[i].type); return(EXIT_FAILURE); break; } fprintf(stderr, "bast: Wrote segment %s\n", data[i].name); } fclose(fout); }