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- /*
- * Conversion from ack a.out to Arthur output format.
- * All this really does is to output the sections, text first,
- * with no header or symbol table information.
- *
- * Mostly pinched from the code for the m68k2 cv.
- * V1.0, 08-Mar-89 AJM
- */
- #include <stdlib.h>
- #include <stdio.h>
- #include "out.h"
- #include "arm.h"
- #define ASSERT(x) switch (2) { case 0: case (x): ; }
- /*
- * Header and section table of ack object file.
- */
- struct outhead outhead;
- struct outsect outsect[S_MAX];
- char *stringarea ;
- char *ofile;
- int ofile_created;
- char *program ;
- char flag ;
- #define readf(a, b, c) fread((a), (b), (int)(c), input)
- #define writef(a, b, c) fwrite((a), (b), (int)(c), output)
- /* Output file definitions and such */
- #define HDR_LENGTH 32
- char hdr[HDR_LENGTH] ;
- #define TEXT 0
- #define ROM 1
- #define DATA 2
- #define BSS 3
- #define LSECT BSS+1
- #define NSECT LSECT+1
- #define N_EXT 040
- #define N_UNDEF 00
- #define N_ABS 01
- #define N_TEXT 02
- #define N_DATA 03
- #define N_BSS 04
- #define N_FN 037
- FILE *input;
- FILE *output;
- long align(a,b)
- long a,b;
- {
- a += b - 1;
- return a - a % b;
- }
-
- int
- follows(pa, pb)
- register struct outsect *pa, *pb;
- {
- /* return 1 if pa follows pb */
-
- return pa->os_base == align(pb->os_base+pb->os_size, pa->os_lign);
- }
- main(argc, argv)
- int argc;
- char *argv[];
- {
- register int nsect;
- long magic ;
- long textsize ;
- long datasize ;
- long ss;
- ASSERT(sizeof(struct outhead) == SZ_HEAD);
- ASSERT(sizeof(struct outsect) == SZ_SECT);
- input = stdin; output = stdout;
- program= argv[0] ;
- if ( argc>1 && argv[1][0]=='-' ) {
- flag=argv[1][1] ;
- argc-- ; argv++ ;
- }
- switch (argc) {
- case 1: break;
- case 3: if ((output = fopen(argv[2], "w")) == (FILE *)0)
- fatal("Can't write %s.\n", argv[2]);
- ofile = argv[2];
- ofile_created = 1;
- /* FALLTHROUGH */
- case 2: if ((input = fopen(argv[1], "r")) == (FILE *)0)
- fatal("Can't read %s.\n", argv[1]);
- break;
- default:fatal("Usage: %s <ack object> <riscos object>.\n", argv[0]);
- }
- if ( !rhead(input,&outhead) )
- fatal("Reading header failed.\n");
- if (BADMAGIC(outhead))
- fatal("Not an ack object file.\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) ;
- for ( nsect=0 ; nsect<outhead.oh_nsect ; nsect++ )
- if ( !rsect(input,&outsect[nsect]) )
- fatal("Reading section table failed.\n");
- /* A few checks */
- if ( outsect[TEXT].os_base != 0x8000 )
- fatal("text must start at 0x8000 not at 0x%lx\n",
- outsect[TEXT].os_base) ;
- if ( outsect[BSS].os_flen != 0 )
- fatal("bss space contains initialized data\n") ;
- if ( ! follows(&outsect[BSS], &outsect[DATA]))
- fatal("bss segment must follow data segment\n") ;
- if ( ! follows(& outsect[ROM], &outsect[TEXT]))
- fatal("rom segment must follow text\n") ;
- if ( ! follows(& outsect[DATA], &outsect[ROM]))
- fatal("data segment must follow rom\n") ;
- if ( outhead.oh_nsect==NSECT ) {
- if (! follows(&outsect[LSECT], &outsect[BSS]))
- fatal("end segment must follow bss\n") ;
- if ( outsect[LSECT].os_size != 0 )
- fatal("end segment must be empty\n") ;
- }
- /* Action at last */
- fseek(output,0L,0); /* Start of output file */
- emits(&outsect[TEXT]) ; /* Write out the text segment */
- emits(&outsect[ROM]) ; /* Then the rom */
- emits(&outsect[DATA]) ; /* Then the data */
- if ( ferror(output) ) {
- fatal("output write error\n") ;
- }
- if ( ofile_created ) chmod(argv[2],0755);
- ss = 0;
- printf(" text = %ld\n",outsect[TEXT].os_size);
- printf(" rom = %ld\n",outsect[ROM].os_size);
- printf(" data = %ld\n",outsect[DATA].os_size);
- printf(" bss = %ld\n",outsect[BSS].os_size);
- ss += outsect[TEXT].os_size;
- ss += outsect[ROM].os_size;
- ss += outsect[DATA].os_size;
- ss += outsect[BSS].os_size;
- printf("Total memory %ld bytes, plus heap and stack\n",ss);
- return 0;
- }
- /*
- * Transfer the emitted byted from one file to another.
- * and zero fill the uninitialized space
- */
- emits(section) struct outsect *section ; {
- register long n ;
- register int blk;
- char buffer[BUFSIZ];
- n= section->os_flen ;
- while (n > 0) {
- blk = n > BUFSIZ ? BUFSIZ : n;
- readf(buffer, 1, blk);
- writef(buffer, 1, blk);
- n -= blk;
- }
- if ( section->os_flen!=section->os_size ) {
- for ( n=BUFSIZ-1 ; n ; n-- ) buffer[n]=0 ;
- n= section->os_size - section->os_flen ;
- while (n > 0) {
- blk = n > BUFSIZ ? BUFSIZ : n;
- writef(buffer, 1, blk);
- n -= blk;
- }
- }
- }
- rhead(f,head) struct outhead *head ; FILE *f ; {
- char buf[SZ_HEAD] ;
- if ( fread(buf,SZ_HEAD,1,f)!=1 ) return 0 ;
- iconvert(buf,(char *)head,SF_HEAD) ;
- return 1 ;
- }
- rsect(f,sect) struct outsect *sect ; FILE *f ; {
- char buf[SZ_SECT] ;
- if ( fread(buf,SZ_SECT,1,f)!=1 ) return 0 ;
- iconvert(buf,(char *)sect,SF_SECT) ;
- return 1 ;
- }
- iconvert(buf,str,fmt) char *buf, *str, *fmt ; {
- register char *nf, *ni, *no ;
- int last, i ;
- long value ;
- ni=buf ; no=str ; nf=fmt ;
- while ( last = *nf++ ) {
- last -= '0' ;
- if ( last<1 || last >9 ) fatal("illegal out.h format string\n");
- value=0 ;
- i=last ;
- while ( i-- ) {
- value = (value<<8) + (ni[i]&0xFF) ;
- }
- switch ( last ) {
- case 0 : break ;
- case 1 : *no= value ; break ;
- case 2 : *(unsigned short *)no = value ; break ;
- case 4 : *(long *)no = value ; break ;
- default :
- fatal("illegal out.h format string\n");
- }
- ni += last ; no += last ;
- }
- }
- /* VARARGS1 */
- fatal(s, a1, a2)
- char *s;
- {
- fprintf(stderr,"%s: ",program) ;
- fprintf(stderr, s, a1, a2);
- if (ofile_created)
- unlink(ofile);
- exit(-1);
- }
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