/[gxemul]/trunk/src/memory.c
This is repository of my old source code which isn't updated any more. Go to git.rot13.org for current projects!
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revision 32 by dpavlin, Mon Oct 8 16:20:58 2007 UTC revision 34 by dpavlin, Mon Oct 8 16:21:17 2007 UTC
# Line 1  Line 1 
1  /*  /*
2   *  Copyright (C) 2003-2006  Anders Gavare.  All rights reserved.   *  Copyright (C) 2003-2007  Anders Gavare.  All rights reserved.
3   *   *
4   *  Redistribution and use in source and binary forms, with or without   *  Redistribution and use in source and binary forms, with or without
5   *  modification, are permitted provided that the following conditions are met:   *  modification, are permitted provided that the following conditions are met:
# Line 25  Line 25 
25   *  SUCH DAMAGE.   *  SUCH DAMAGE.
26   *   *
27   *   *
28   *  $Id: memory.c,v 1.199 2006/10/24 09:32:48 debug Exp $   *  $Id: memory.c,v 1.201 2006/12/30 13:30:52 debug Exp $
29   *   *
30   *  Functions for handling the memory of an emulated machine.   *  Functions for handling the memory of an emulated machine.
31   */   */
# Line 43  Line 43 
43    
44    
45  extern int verbose;  extern int verbose;
46    extern int quiet_mode;
47    
48    
49  /*  /*
# Line 620  uint64_t memory_checksum(struct memory * Line 621  uint64_t memory_checksum(struct memory *
621          return checksum;          return checksum;
622  }  }
623    
624    
625    /*
626     *  memory_warn_about_unimplemented_addr():
627     *
628     *  Called from memory_rw whenever memory outside of the physical address space
629     *  is accessed (and quiet_mode isn't set).
630     */
631    void memory_warn_about_unimplemented_addr(struct cpu *cpu, struct memory *mem,
632            int writeflag, uint64_t paddr, uint8_t *data, size_t len)
633    {
634            uint64_t offset, old_pc = cpu->pc;
635            char *symbol;
636    
637            /*
638             *  This allows guest OS kernels to probe memory a few KBs past the
639             *  end of memory, without giving too many warnings.
640             */
641            if (paddr < mem->physical_max + 0x40000)
642                    return;
643    
644            if (!cpu->machine->halt_on_nonexistant_memaccess && quiet_mode)
645                    return;
646    
647            fatal("[ memory_rw(): %s ", writeflag? "write":"read");
648    
649            if (writeflag) {
650                    unsigned int i;
651                    debug("data={", writeflag);
652                    if (len > 16) {
653                            int start2 = len-16;
654                            for (i=0; i<16; i++)
655                                    debug("%s%02x", i?",":"", data[i]);
656                            debug(" .. ");
657                            if (start2 < 16)
658                                    start2 = 16;
659                            for (i=start2; i<len; i++)
660                                    debug("%s%02x", i?",":"", data[i]);
661                    } else
662                            for (i=0; i<len; i++)
663                                    debug("%s%02x", i?",":"", data[i]);
664                    debug("} ");
665            }
666    
667            fatal("paddr=0x%llx >= physical_max; pc=", (long long)paddr);
668            if (cpu->is_32bit)
669                    fatal("0x%08"PRIx32, (uint32_t) old_pc);
670            else
671                    fatal("0x%016"PRIx64, (uint64_t) old_pc);
672            symbol = get_symbol_name(&cpu->machine->symbol_context,
673                old_pc, &offset);
674            fatal(" <%s> ]\n", symbol? symbol : " no symbol ");
675    
676            if (cpu->machine->halt_on_nonexistant_memaccess) {
677                    /*  TODO: Halt in a nicer way. Not possible with the
678                        current dyntrans system...  */
679                    exit(1);
680            }
681    }
682    
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