From 5627bb850ed003ee089923c2b28f3a3d414ccda0 Mon Sep 17 00:00:00 2001 From: ceriel Date: Wed, 4 Feb 1987 16:44:15 +0000 Subject: [PATCH] Initial revision --- mach/i86/cv/Makefile | 25 ++++ mach/i86/cv/cv.c | 290 +++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 315 insertions(+) create mode 100644 mach/i86/cv/Makefile create mode 100644 mach/i86/cv/cv.c diff --git a/mach/i86/cv/Makefile b/mach/i86/cv/Makefile new file mode 100644 index 000000000..5cfa97a6a --- /dev/null +++ b/mach/i86/cv/Makefile @@ -0,0 +1,25 @@ +EMHOME = ../../.. +LIBOBJ = $(EMHOME)/modules/lib/libobject.a +INCLUDE = $(EMHOME)/h +CFLAGS = -I. -I$(INCLUDE) -O +TARGETS = cv + +all: $(TARGETS) + +install: all + ../../install cv + +cmp: all + ../../compare cv + +cv: cv.o + $(CC) $(LDFLAGS) -o cv cv.o $(LIBOBJ) + +clean: + rm -f $(TARGETS) *.o nohup.out Out + +pr: + @pr Makefile cv.c + +opr: + make pr | opr diff --git a/mach/i86/cv/cv.c b/mach/i86/cv/cv.c new file mode 100644 index 000000000..3afafbf0c --- /dev/null +++ b/mach/i86/cv/cv.c @@ -0,0 +1,290 @@ +/* + * (c) copyright 1983 by the Vrije Universiteit, Amsterdam, The Netherlands. + * + * This product is part of the Amsterdam Compiler Kit. + * + * Permission to use, sell, duplicate or disclose this software must be + * obtained in writing. Requests for such permissions may be sent to + * + * Dr. Andrew S. Tanenbaum + * Wiskundig Seminarium + * Vrije Universiteit + * Postbox 7161 + * 1007 MC Amsterdam + * The Netherlands + * + */ + +/* + * This program converts ack.out format to PC/IX a.out format. + * It uses ~em/modules/lib/libobject.a. + */ + +#include + +struct exec { + unsigned char a_magic[2]; + unsigned char a_flags; + unsigned char a_cpu; + unsigned char a_hdrlen; + unsigned char a_unused; + unsigned short a_version; + long a_text; + long a_data; + long a_bss; + long a_entry; + long a_misc; + long a_syms; +}; + +struct nlist +{ char n_name[8]; + long n_value; + unsigned char n_sclass; + unsigned char n_numaux; + unsigned short n_type; +}; + +#include + +#ifndef NORCSID +static char rcs_id[] = "$Header$" ; +#endif + +#define ENTRY 0x0 /* entry point */ + +/* + * Header and section table of new format object file. + */ +struct outhead outhead; +struct outsect outsect[S_MAX]; + +struct exec exec; + +char *output_file; +int outputfile_created; +int output; + +char *program ; + +char flag ; + +/* Output file definitions and such */ + +#define TEXTSG 0 +#define ROMSG 1 +#define DATASG 2 +#define BSSSG 3 +#define LSECT BSSSG+1 +#define NSECT LSECT+1 + +main(argc, argv) + int argc; + char *argv[]; +{ + register int nsect; + long magic ; + long textsize ; + long datasize ; + long bsssize; + long symstart; + register struct exec *e = &exec; + + output = 1; + program= argv[0] ; + if ( argc>1 && argv[1][0]=='-' ) { + flag=argv[1][1] ; + argc-- ; argv++ ; + } + switch (argc) { + case 1: rd_fdopen(0); + break; + case 3: if ((output = creat(argv[2], 0644)) < 0) { + fatal("Can't write %s.\n", argv[2]); + } + output_file = argv[2]; + outputfile_created = 1; + /* FALLTHROUGH */ + case 2: + if (! rd_open(argv[1])) + fatal("Can't read %s.\n", argv[1]); + break; + default:fatal("Usage: %s
.\n", argv[0]); + } + 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); + while (outsect[TEXTSG].os_size % outsect[TEXTSG].os_lign) + outsect[TEXTSG].os_size++; + while (outsect[ROMSG].os_size % outsect[ROMSG].os_lign) + outsect[ROMSG].os_size++; + while (outsect[DATASG].os_size % outsect[DATASG].os_lign) + outsect[DATASG].os_size++; + /* 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") ; + + e->a_magic[0] = 01; + e->a_magic[1] = 03; + e->a_cpu = 04; + e->a_hdrlen = 32; + e->a_text = outsect[TEXTSG].os_size; + e->a_data = outsect[ROMSG].os_size + outsect[DATASG].os_size; + e->a_bss = outsect[BSSSG].os_size; + e->a_entry = outsect[TEXTSG].os_base; + e->a_syms = (long) outhead.oh_nname * sizeof (struct nlist); + e->a_misc = 0x10000; + if ( outsect[ROMSG].os_base == 0x0 ) { + /* Separate I/D */ + e->a_flags = 0x20; + if ( outsect[DATASG].os_base != outsect[ROMSG].os_base+ + outsect[ROMSG].os_size ) + fatal("data segment must follow rom\n") ; + } else { + e->a_flags = 0x10; + 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 ( 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") ; + } + + /* Action at last */ + write(output, (char *) e, 32); + emits(&outsect[TEXTSG]) ; + emits(&outsect[ROMSG]) ; + emits(&outsect[DATASG]) ; + emit_symtab(); + if ( outputfile_created ) chmod(argv[2],0755); + return 0; +} + +/* + * Transfer the emitted byted from one file to another. + */ +emits(section) struct outsect *section ; { + register long n ; + register int blk; + char buffer[BUFSIZ]; + + n= section->os_flen ; + rd_outsect(section - outsect); + while (n > 0) { + blk = n > BUFSIZ ? BUFSIZ : n; + rd_emit(buffer, (long) blk); + write(output, buffer, blk); + n -= blk; + } + if ((n = section->os_size - section->os_flen) > 0) { + for (blk = BUFSIZ - 1; blk >= 0; blk--) { + buffer[blk] = 0; + } + while (n > 0) { + blk = n > BUFSIZ ? BUFSIZ : n; + write(output, buffer, blk); + n -= blk; + } + } +} + +emit_symtab() +{ + struct outname ACK_name; /* symbol table entry in ACK format */ + struct nlist IX_name; /* symbol table entry in PC/IX format */ + register unsigned short i; + + char x; + long y; + extern char *malloc(); + char *chars; + long l; + long off = OFF_CHAR(outhead); + int j; + char *p; + + chars = malloc(outhead.oh_nchar); + rd_string(chars,outhead.oh_nchar); + for (i = 0; i < outhead.oh_nname; i++) { + rd_name(&ACK_name, 1); + switch(ACK_name.on_type & S_TYP) { + case S_UND: + IX_name.n_sclass = 0; + break; + case S_ABS: + IX_name.n_sclass = 01; + break; + case S_MIN + TEXTSG: + IX_name.n_sclass = 02; + break; + case S_MIN + ROMSG: + case S_MIN + DATASG: + IX_name.n_sclass = 03; + break; + case S_MIN + BSSSG: + case S_MIN + LSECT: + IX_name.n_sclass = 04; + break; + default: + fprintf(stderr,"warning: unknown s_type: %d\n", + ACK_name.on_type & S_TYP); + } + if (ACK_name.on_type & S_EXT) IX_name.n_sclass |= 020; + IX_name.n_value = ACK_name.on_valu; + if (ACK_name.on_foff == 0) { + p = "\0\0"; + } + else { + l = ACK_name.on_foff - off; + if (l < 0 || l >= outhead.oh_nchar) { + fatal("bad on_off: %ld\n",l); + } + p = &chars[l]; + } + for (j = 0; j < 8; j++) { + IX_name.n_name[j] = *p++; + if (*p == '\0') break; + } + for (j++; j < 8; j++) { + IX_name.n_name[j] = 0; + } + write(output, (char *) &IX_name, sizeof(struct nlist)); + } +} + +/* 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"); +} -- 2.34.1