src/runtime/validate.c

   1 /*
   2  * memory validation
   3  */
   4
   5 /*
   6  * This software is part of the SBCL system. See the README file for
   7  * more information.
   8  *
   9  * This software is derived from the CMU CL system, which was
  10  * written at Carnegie Mellon University and released into the
  11  * public domain. The software is in the public domain and is
  12  * provided with absolutely no warranty. See the COPYING and CREDITS
  13  * files for more information.
  14  */
  15
  16 /*
  17  * $Header$
  18  */
  19
  20 #include <stdio.h>
  21 #include "runtime.h"
  22 #include "os.h"
  23 #include "globals.h"
  24 #include "sbcl.h"
  25 #include "validate.h"
  26
  27 static void ensure_space(lispobj *start, unsigned long size)
  28 {
  29     if (os_validate((os_vm_address_t)start,(os_vm_size_t)size)==NULL) {
  30         fprintf(stderr,
  31                 "ensure_space: failed to validate %ld bytes at 0x%08X\n",
  32                 size,
  33                 (unsigned long)start);
  34         exit(1);
  35     }
  36 }
  37
  38 #ifdef HOLES
  39
  40 static os_vm_address_t holes[] = HOLES;
  41
  42 static void make_holes(void)
  43 {
  44     int i;
  45
  46     for (i = 0; i < sizeof(holes)/sizeof(holes[0]); i++) {
  47         if (os_validate(holes[i], HOLE_SIZE) == NULL) {
  48             fprintf(stderr,
  49                     "make_holes: failed to validate %ld bytes at 0x%08X\n",
  50                     HOLE_SIZE,
  51                     (unsigned long)holes[i]);
  52             exit(1);
  53         }
  54         os_protect(holes[i], HOLE_SIZE, 0);
  55     }
  56 }
  57 #endif
  58
  59 void validate(void)
  60 {
  61 #ifdef PRINTNOISE
  62         printf("validating memory ...");
  63         fflush(stdout);
  64 #endif
  65
  66         /* Read-Only Space */
  67         read_only_space = (lispobj *) READ_ONLY_SPACE_START;
  68         ensure_space(read_only_space, READ_ONLY_SPACE_SIZE);
  69
  70         /* Static Space */
  71         static_space = (lispobj *) STATIC_SPACE_START;
  72         ensure_space(static_space, STATIC_SPACE_SIZE);
  73
  74         /* Dynamic-0 Space */
  75         dynamic_0_space = (lispobj *) DYNAMIC_0_SPACE_START;
  76         ensure_space(dynamic_0_space, DYNAMIC_SPACE_SIZE);
  77
  78         current_dynamic_space = dynamic_0_space;
  79
  80         /* Dynamic-1 Space */
  81         dynamic_1_space = (lispobj *) DYNAMIC_1_SPACE_START;
  82 #ifndef GENCGC
  83         ensure_space(dynamic_1_space, DYNAMIC_SPACE_SIZE);
  84 #endif
  85
  86         /* Control Stack */
  87         control_stack = (lispobj *) CONTROL_STACK_START;
  88 #ifdef __i386__
  89         control_stack_end = (lispobj *) (CONTROL_STACK_START
  90                                          + CONTROL_STACK_SIZE);
  91 #endif
  92         ensure_space(control_stack, CONTROL_STACK_SIZE);
  93
  94         /* Binding Stack */
  95         binding_stack = (lispobj *) BINDING_STACK_START;
  96         ensure_space(binding_stack, BINDING_STACK_SIZE);
  97
  98 #ifdef HOLES
  99         make_holes();
 100 #endif
 101
 102 #ifdef PRINTNOISE
 103         printf(" done.\n");
 104 #endif
 105 }