/* ---------------------------------------------------------------------- */ /* Copyright (C) 1991 by Natrlich! */ /* This file is copyrighted! */ /* Refer to the documentation for details. */ /* ---------------------------------------------------------------------- */ #include "defines.h" #include "nasm.h" #include OSBIND #include "code.h" #include /* get size_t */ #include #include #include "debug.h" #if STATISTICS #include "stats.h" #include #endif extern char outofmem[]; #if STATISTICS || ! VERSION #define MAXHISTORY 256 #define MAXWATCHES 16 #define MAGIC 0x41424344L static struct { byte huge *p; lword size; } history[ MAXHISTORY]; static struct watch { unsigned long magic; unsigned char *p; char *name; short size; short occupied; unsigned long chksum; } watches[ MAXWATCHES] = { { MAGIC, 0, 0, 0, 0, 0 }, /* fill this up appropriately */ { MAGIC, 0, 0, 0, 0, 0 }, { MAGIC, 0, 0, 0, 0, 0 }, { MAGIC, 0, 0, 0, 0, 0 }, { MAGIC, 0, 0, 0, 0, 0 }, { MAGIC, 0, 0, 0, 0, 0 }, { MAGIC, 0, 0, 0, 0, 0 }, { MAGIC, 0, 0, 0, 0, 0 }, { MAGIC, 0, 0, 0, 0, 0 }, { MAGIC, 0, 0, 0, 0, 0 }, { MAGIC, 0, 0, 0, 0, 0 }, { MAGIC, 0, 0, 0, 0, 0 }, { MAGIC, 0, 0, 0, 0, 0 }, { MAGIC, 0, 0, 0, 0, 0 }, { MAGIC, 0, 0, 0, 0, 0 }, { MAGIC, 0, 0, 0, 0, 0 } }; unsigned long chksum( p, size) unsigned char *p; { unsigned long x; int i; x = *p++; for( i = 3; i-- && size; size--) x = (x << 8) + *p++; while( size--) x = (x << 3) + *p++; return( x); } void add_watch( p, size, name) unsigned char *p; size_t size; char *name; { struct watch *q; int i; ENTER("add_watch"); if( ! p) return; for( q = watches, i = MAXWATCHES; i--; q++) if( ! q->occupied) { q->magic = MAGIC; q->p = p; q->name = name; q->size = size; q->chksum = chksum( p, (int) size); q->occupied = 1; LEAVE(); return; } nierror("Watch space exhausted"); } print_watches() { struct watch *q; int i; printf("Active watches:\n"); for( q = watches, i = MAXWATCHES; i--; q++) if( q->occupied) printf( "\t%s\n", q->name); } void del_watch( p) unsigned char *p; { struct watch *q; int i; ENTER("del_watch"); if( ! p) return; for( q = watches, i = MAXWATCHES; i--; q++) if( q->occupied && q->p == p) { q->occupied = 0; LEAVE(); return; } nierror("Watch not found"); } do_watch() { struct watch *q; int i; for( q = watches, i = MAXWATCHES; i--; q++) { if( q->magic != MAGIC) nierror("Good work! You managed to clobber the watch space"); if( q->occupied && q->chksum != chksum( q->p, q->size)) { auto char buffer[ 256]; if( q->name) sprintf( buffer, "Someone clobbered >>%s<<", q->name); else sprintf( buffer, "Someone clobbered %d bytes @$%.8lX", q->size, (long) q->p); nierror( buffer); } } } check_mallocs() { int i = 0; byte huge *p, huge *q, huge *r; for( i = 0; i < MAXHISTORY; i++) if( p = (byte huge *) history[ i].p) { q = p - sizeof( lword); r = p + history[ i].size; if( lbeek( q) != MAGIC || lbeek( r) != MAGIC) nierror("Someone clobbered the malloc space"); } } do_check() { ENTER("do_check"); do_watch(); check_mallocs(); LEAVE(); } bad_pointer( p) byte huge *p; { int i = 0; byte huge *q; if( ! p) return; for( i = 0; i < MAXHISTORY; i++) if( (q = history[ i].p) && p >= q && p < (q + history[ i].size)) return; nierror("You got a bad pointer here"); } #endif byte huge *nmalloc( size) lword size; { register byte volatile huge *p; ENTER("nmalloc"); #if ! VERSION if( size > 0x01000000) nwarning("Probably some conversion trouble when calling nmalloc"); size += sizeof( lword) * 2; #endif #if STATISTICS _mused += size; if( _mused >= _maxused) _maxused = _mused; #endif /* fucking TURBO.C libraries, nothing works */ #if OS == TOS && __TURBOC__ && ! defined( __PUREC__) if( ! (p = (byte huge *) malloc( size)) || (long) p < 0) #else if( ! (p = (byte huge *) malloc( size))) #endif nferror( outofmem); #if ! VERSION memset( p, 0xFF, size); # if OS == MSDOS if( get_ADDR( p) < 0x10000 || get_ADDR( p) > 0x400000) nierror( "Pointer trouble in paradise"); # endif check_mallocs(); if( ((*p = 0x55) && *p != 0x55) || ((*p = 0xAA) && *p != 0xAA)) nierror("malloc is seriously fucked"); lbyte( p, MAGIC); size -= sizeof( lword) * 2; p += sizeof( lword); lbyte( p + size, MAGIC); #endif #if STATISTICS || ! VERSION { register int i = 0; while( history[ i].p && i++ < MAXHISTORY); if( i == MAXHISTORY) nierror("Statistic space for nmalloc exhausted"); history[ i].p = (byte huge *) p; history[ i].size = size; } #endif IMESS("Memory starts @$%8.8lX", (lword) p, 4); LEAVE(); return( (byte huge *) p); } void nfree( p) void huge *p; { ENTER("nfree"); if( ! p) /* check for p == NULL (Can happen!) */ return; #if STATISTICS || ! VERSION { int i = 0; while( history[ i].p != p && i++ < MAXHISTORY); if( i == MAXHISTORY) nierror("Faulty nfree"); #if STATISTICS _mused -= history[ i].size; #endif memset( (char *) p - sizeof( lword), 0xFE, history[ i].size + 2 * sizeof( lword)); history[i].p = 0; } #endif #if ! VERSION (char huge *) p -= sizeof( lword); #endif free( p); LEAVE(); } char *get_filename( pathname) char *pathname; { register char c, *p = pathname; while( (c = *p++) && c != DIRSLASH); if( ! c) return( pathname); while( *p++); while( *--p != DIRSLASH); return( ++p); } void complete( filename, ext, force) char *filename, *ext; { char *x; ENTER("complete"); if( x = strrchr( filename, '.')) { if( strrchr( filename, DIRSLASH) > x) goto dis; if( force) while( *++x = *++ext); } else dis: strcat( filename, ext); LEAVE(); } #if LOWERFILE #include void downcase( s) register char *s; { register char c; while( c = *s) *s++ = tolower( c); } #endif /* ---------------------------------------------------------- */ /* Character representation (from Your Atari Computer) */ /* $00-$1F -> $40-$5F (+ $40) */ /* $20-$5F -> $00-$3F (- $20) */ /* $60-$7F -> $60-$7F (+-$00) */ /* $80-$9F -> $C0-$DF (+ $40) */ /* $A0-$DF -> $80-$BF (- $20) */ /* $EO-$FF -> $E0-$FF (+-$00) */ /* ---------------------------------------------------------- */ byte scrtab[] = { 0x40, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47, 0x48, 0x49, 0x4A, 0x4B, 0x4C, 0x4D, 0x4E, 0x4F, 0x50, 0x51, 0x52, 0x53, 0x54, 0x55, 0x56, 0x57, 0x58, 0x59, 0x5A, 0x5B, 0x5C, 0x5D, 0x5E, 0x5F, 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F, 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 0x18, 0x19, 0x1A, 0x1B, 0x1C, 0x1D, 0x1E, 0x1F, 0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27, 0x28, 0x29, 0x2A, 0x2B, 0x2C, 0x2D, 0x2E, 0x2F, 0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, 0x38, 0x39, 0x3A, 0x3B, 0x3C, 0x3D, 0x3E, 0x3F, 0x60, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67, 0x68, 0x69, 0x6A, 0x6B, 0x6C, 0x6D, 0x6E, 0x6F, 0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77, 0x78, 0x79, 0x7A, 0x7B, 0x7C, 0x7D, 0x7E, 0x7F, 0xC0, 0xC1, 0xC2, 0xC3, 0xC4, 0xC5, 0xC6, 0xC7, 0xC8, 0xC9, 0xCA, 0xCB, 0xCC, 0xCD, 0xCE, 0xCF, 0xD0, 0xD1, 0xD2, 0xD3, 0xD4, 0xD5, 0xD6, 0xD7, 0xD8, 0xD9, 0xDA, 0xDB, 0xDC, 0xDD, 0xDE, 0xDF, 0x80, 0x81, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87, 0x88, 0x89, 0x8A, 0x8B, 0x8C, 0x8D, 0x8E, 0x8F, 0x90, 0x91, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97, 0x98, 0x99, 0x9A, 0x9B, 0x9C, 0x9D, 0x9E, 0x9F, 0xA0, 0xA1, 0xA2, 0xA3, 0xA4, 0xA5, 0xA6, 0xA7, 0xA8, 0xA9, 0xAA, 0xAB, 0xAC, 0xAD, 0xAE, 0xAF, 0xB0, 0xB1, 0xB2, 0xB3, 0xB4, 0xB5, 0xB6, 0xB7, 0xB8, 0xB9, 0xBA, 0xBB, 0xBC, 0xBD, 0xBE, 0xBF, 0xE0, 0xE1, 0xE2, 0xE3, 0xE4, 0xE5, 0xE6, 0xE7, 0xE8, 0xE9, 0xEA, 0xEB, 0xEC, 0xED, 0xEE, 0xEF, 0xF0, 0xF1, 0xF2, 0xF3, 0xF4, 0xF5, 0xF6, 0xF7, 0xF8, 0xF9, 0xFA, 0xFB, 0xFC, 0xFD, 0xFE, 0xFF };