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 "validate.h"
  25
  26 static void ensure_space(lispobj *start, unsigned long size)
  27 {
  28     if (os_validate((os_vm_address_t)start,(os_vm_size_t)size)==NULL) {
  29         fprintf(stderr,
  30                 "ensure_space: failed to validate %ld bytes at 0x%08X\n",
  31                 size,
  32                 (unsigned long)start);
  33         exit(1);
  34     }
  35 }
  36
  37 #ifdef HOLES
  38
  39 static os_vm_address_t holes[] = HOLES;
  40
  41 static void make_holes(void)
  42 {
  43     int i;
  44
  45     for (i = 0; i < sizeof(holes)/sizeof(holes[0]); i++) {
  46         if (os_validate(holes[i], HOLE_SIZE) == NULL) {
  47             fprintf(stderr,
  48                     "make_holes: failed to validate %ld bytes at 0x%08X\n",
  49                     HOLE_SIZE,
  50                     (unsigned long)holes[i]);
  51             exit(1);
  52         }
  53         os_protect(holes[i], HOLE_SIZE, 0);
  54     }
  55 }
  56 #endif
  57
  58 void validate(void)
  59 {
  60 #ifdef PRINTNOISE
  61         printf("validating memory ...");
  62         fflush(stdout);
  63 #endif
  64
  65         /* Read-Only Space */
  66         read_only_space = (lispobj *) READ_ONLY_SPACE_START;
  67         ensure_space(read_only_space, READ_ONLY_SPACE_SIZE);
  68
  69         /* Static Space */
  70         static_space = (lispobj *) STATIC_SPACE_START;
  71         ensure_space(static_space, STATIC_SPACE_SIZE);
  72
  73         /* Dynamic-0 Space */
  74         dynamic_0_space = (lispobj *) DYNAMIC_0_SPACE_START;
  75         ensure_space(dynamic_0_space, DYNAMIC_SPACE_SIZE);
  76
  77         current_dynamic_space = dynamic_0_space;
  78
  79         /* Dynamic-1 Space */
  80         dynamic_1_space = (lispobj *) DYNAMIC_1_SPACE_START;
  81 #ifndef GENCGC
  82         ensure_space(dynamic_1_space, DYNAMIC_SPACE_SIZE);
  83 #endif
  84
  85         /* Control Stack */
  86         control_stack = (lispobj *) CONTROL_STACK_START;
  87 #ifdef __i386__
  88         control_stack_end = (lispobj *) (CONTROL_STACK_START
  89                                          + CONTROL_STACK_SIZE);
  90 #endif
  91         ensure_space(control_stack, CONTROL_STACK_SIZE);
  92
  93         /* Binding Stack */
  94         binding_stack = (lispobj *) BINDING_STACK_START;
  95         ensure_space(binding_stack, BINDING_STACK_SIZE);
  96
  97 #ifdef HOLES
  98         make_holes();
  99 #endif
 100
 101 #ifdef PRINTNOISE
 102         printf(" done.\n");
 103 #endif
 104 }