From 496bba9475066b38b7f44fc6c2d7572017cafd62 Mon Sep 17 00:00:00 2001 From: ceriel Date: Fri, 30 Jan 1987 20:48:31 +0000 Subject: [PATCH] New version --- mach/pmds/cv/cv.c | 288 +++++++++++++++++++++++++++------------------- 1 file changed, 170 insertions(+), 118 deletions(-) diff --git a/mach/pmds/cv/cv.c b/mach/pmds/cv/cv.c index 043f1d718..2f32f16c1 100644 --- a/mach/pmds/cv/cv.c +++ b/mach/pmds/cv/cv.c @@ -15,145 +15,161 @@ * */ -char rcs_id[] = "$Header$" ; - /* - * The assumption is that this program is run on the same machine the - * assembler has run. So the assembler's idea of long fits cv's idea. - * The long's produced in the output file have the m68000 format. - * The idea's of the longs read in can be changed with the following - * flags: - * -v Vax longs - * -p Pdp 11 longs - * -m M68000 longs + * Fortunately we sold our PMDS machine. Unfortunately, we also sold the + * documentation that came with it, so I don't know the a.out format + * of the machine. This program is written partly by guessing, and partly from + * an older conversion program for the PMDS, which put the whole program + * in data. The produced object file does not contain a namelist. */ #include +#include -char * prog ; +#define ASSERT(x) switch (2) { case 0: case (x): ; } + +/* + * Header and section table of new format object file. + */ +struct outhead outhead; +struct outsect outsect[S_MAX]; + +char *output_file; +int outputfile_created; + +int rom_in_data; + +char *program ; char flag ; -#define HDR_LENGTH 40 +#define writef(a, b, c) fwrite((a), (b), (int)(c), output) -char hdr[HDR_LENGTH] ; +/* Output file definitions and such */ -main(argc,argv) char **argv; { - long addr,maxaddr; - short count; - - maxaddr=0; + +#define ENTRY 0 +#define HDRSIZE 40 + +char hdr[HDRSIZE]; + + +#define TEXTSG 0 +#define ROMSG 1 +#define DATASG 2 +#define BSSSG 3 +#define LSECT BSSSG+1 +#define NSECT LSECT+1 + +FILE *output; + +main(argc, argv) + int argc; + char *argv[]; +{ + register int nsect; + long magic ; + long textsize ; + long datasize ; + long bsssize; + long symstart; + extern long ftell(); + + output = stdout; + program= argv[0] ; if ( argc>1 && argv[1][0]=='-' ) { flag=argv[1][1] ; argc-- ; argv++ ; } - if (argc != 3) { - fprintf(stderr,"Usage: %s [-[vpm]] VU-a.out pmds-a.out\n",argv[0]); - exit(-1); + switch (argc) { + case 3: if ((output = fopen(argv[2], "w")) == (FILE *)0) + fatal("Can't write %s.\n", argv[2]); + output_file = argv[2]; + outputfile_created = 1; + if (! rd_open(argv[1])) + fatal("Can't read %s.\n", argv[1]); + break; + default:fatal("Usage: %s .\n", argv[0]); } - prog=argv[0] ; - if (freopen(argv[1],"r",stdin)==NULL) { - fprintf(stderr,"%s: ",prog) ; - perror(argv[1]); - exit(-1); + rd_ohead(&outhead); + if (BADMAGIC(outhead)) + fatal("Not an ack object file.\n"); + if (outhead.oh_flags & HF_LINK) + fatal("Contains unresolved references.\n"); + if (outhead.oh_nrelo > 0) + fprintf(stderr, "Warning: relocation information present.\n"); + if ( outhead.oh_nsect!=LSECT && outhead.oh_nsect!=NSECT ) + fatal("Input file must have %d sections, not %ld\n", + NSECT,outhead.oh_nsect) ; + rd_sect(outsect, outhead.oh_nsect); + /* A few checks */ + if ( outsect[TEXTSG].os_base != ENTRY) + fatal("text must start at %d not at 0x%lx\n", ENTRY, + outsect[TEXTSG].os_base) ; + if ( outsect[BSSSG].os_flen != 0 ) + fatal("bss space contains initialized data\n") ; + if ( outsect[BSSSG].os_base != outsect[DATASG].os_base+ + outsect[DATASG].os_size ) + fatal("bss segment must follow data segment\n") ; + if ( outsect[ROMSG].os_lign == 0x8000 ) { + /* 410 file with ROMSG in data space */ + rom_in_data = 1; + magic= 0410 ; + textsize= outsect[TEXTSG].os_size ; + datasize= outsect[ROMSG].os_size + outsect[DATASG].os_size ; + if ( outsect[DATASG].os_base != outsect[ROMSG].os_base+ + outsect[ROMSG].os_size ) + fatal("data segment must follow rom\n") ; + } else + if ( outsect[DATASG].os_lign == 0x8000 ) { + /* 410 file with ROMSG in instruction space */ + rom_in_data = 0; + magic= 0410 ; + textsize= outsect[TEXTSG].os_size + outsect[ROMSG].os_size ; + datasize= outsect[DATASG].os_size ; + if ( outsect[ROMSG].os_base != outsect[TEXTSG].os_base+ + outsect[TEXTSG].os_size ) + fatal("rom segment must follow text\n") ; + } else { + /* Plain 407 file */ + rom_in_data = 1; + magic= 0407 ; + textsize= outsect[TEXTSG].os_size ; + datasize= outsect[ROMSG].os_size + outsect[DATASG].os_size ; + if ( outsect[ROMSG].os_base != outsect[TEXTSG].os_base+ + outsect[TEXTSG].os_size ) + fatal("rom segment must follow text\n") ; + if ( outsect[DATASG].os_base != outsect[ROMSG].os_base+ + outsect[ROMSG].os_size ) + fatal("data segment must follow rom\n") ; } - if (freopen(argv[2],"w",stdout)==NULL) { - fprintf(stderr,"%s: ",prog) ; - perror(argv[2]); - exit(-1); + bsssize = outsect[BSSSG].os_size; + if ( outhead.oh_nsect==NSECT ) { + if ( outsect[LSECT].os_base != outsect[BSSSG].os_base+ + outsect[BSSSG].os_size ) + fatal("end segment must follow bss\n") ; + if ( outsect[LSECT].os_size != 0 ) + fatal("end segment must be empty\n") ; } - while ( getaddr(&addr) && getcnt(&count) ) { - fseek(stdout,addr+HDR_LENGTH,0); - while (count--) { - putchar(getchar()); - if ( ferror(stdout) ) { - fprintf(stderr,"%s: write error\n",prog) ; - unlink(argv[2]) ; /* remove the output */ - exit(2) ; - } - addr++; - } - if (addr>maxaddr) - maxaddr = addr; + + /* Action at last */ + fseek(output,(long) HDRSIZE,0); + emits(&outsect[TEXTSG]) ; + emits(&outsect[ROMSG]) ; + emits(&outsect[DATASG]) ; + fseek(output,0L,0); + sethdr(0, (long) magic); + sethdr(4, textsize); + sethdr(8, datasize); + sethdr(12, bsssize); + writef(hdr, 1, 40); + if ( ferror(output) ) { + fatal("output write error\n") ; } - sethdr(0,0410L) ; /* Magic */ - sethdr(8,maxaddr) ; - fseek(stdout,0L,0); - fwrite(hdr,sizeof(hdr),1,stdout); - if ( ferror(stdout) ) { - fprintf(stderr,"%s: write error\n",prog) ; - unlink(argv[2]) ; /* remove the output */ - exit(2) ; - } - chmod(argv[2],0755); + if ( outputfile_created ) chmod(argv[2],0755); return 0; } -getaddr(p_addr) long *p_addr ; { - char in[4] ; - short out[4] ; - int i ; - - switch ( fread(in,1,4,stdin) ) { - case 0 : return 0 ; - case 4 : break ;; - default : fprintf(stderr,"%s: Illegal input format\n",prog) ; - return 0 ; - } - switch ( flag ) { - case 0 : *p_addr = *((long *)in) ; - return 1 ; - case 'v' : - out[0]=in[0] ; out[1]=in[1] ; - out[2]=in[2] ; out[3]=in[3] ; - break ; - case 'm' : - out[0]=in[3] ; out[1]=in[2] ; - out[2]=in[1] ; out[3]=in[0] ; - break ; - case 'p' : - out[0]=in[2] ; out[1]=in[3] ; - out[2]=in[0] ; out[3]=in[1] ; - break ; - default : - fprintf(stderr,"%s: Unknown conversion %c(%o)\n", - prog,flag,flag) ; - exit(-1) ; - } - for ( i=0 ; i<4 ; i++ ) out[i] &= 0xFF ; - *p_addr = 256 * ( 256 * ( 256 * out[3] + out[2] ) + out[1] ) + out[0]; - return 1 ; -} - -getcnt(p_cnt) short *p_cnt ; { - char in[2] ; - short out[2] ; - int i ; - - switch ( fread(in,1,2,stdin) ) { - case 2 : break ;; - default : fprintf(stderr,"%s: Illegal input format\n",prog) ; - return 0 ; - } - switch ( flag ) { - case 0 : *p_cnt = *((short *)in) ; - return 1 ; - case 'v' : - case 'p' : - out[0]=in[0] ; out[1]=in[1] ; - break ; - case 'm' : - out[0]=in[1] ; out[1]=in[0] ; - break ; - default : - fprintf(stderr,"%s: Unknown conversion %c(%o)\n", - prog,flag,flag) ; - exit(-1) ; - } - for ( i=0 ; i<2 ; i++ ) out[i] &= 0xFF ; - *p_cnt = 256 * out[1] + out[0] ; - return 1 ; -} sethdr(off,val) long val ; { hdr[off] = val>>24 ; @@ -161,3 +177,39 @@ sethdr(off,val) long val ; { hdr[off+2] = val>>8 ; hdr[off+3] = val ; } + +/* + * Transfer the emitted byted from one file to another. + */ +emits(section) struct outsect *section ; { + char *p; + char *calloc(); + long length = section->os_size; + + rd_outsect(section - outsect); + while (section->os_size > 0) { + int i = section->os_size > 10*1024 ? 10*1024 : section->os_size; + + section->os_size -= i; + if (!(p = calloc(i, 1))) { + fatal("No memory.\n"); + } + rd_emit(p, i >= section->os_flen ? section->os_flen:(long) i); + section->os_flen -= i; + writef(p, 1, i); + free(p); + } +} + +/* VARARGS1 */ +fatal(s, a1, a2) + char *s; +{ + fprintf(stderr,"%s: ",program) ; + fprintf(stderr, s, a1, a2); + if (outputfile_created) + unlink(output_file); + exit(-1); +} + +rd_fatal() { fatal("read error.\n"); }