| 1 | /* Copyright (C) 1995,1996 Free Software Foundation, Inc. |
| 2 | * |
| 3 | * This program is free software; you can redistribute it and/or modify |
| 4 | * it under the terms of the GNU General Public License as published by |
| 5 | * the Free Software Foundation; either version 2, or (at your option) |
| 6 | * any later version. |
| 7 | * |
| 8 | * This program is distributed in the hope that it will be useful, |
| 9 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 11 | * GNU General Public License for more details. |
| 12 | * |
| 13 | * You should have received a copy of the GNU General Public License |
| 14 | * along with this software; see the file COPYING. If not, write to |
| 15 | * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. |
| 16 | * |
| 17 | * As a special exception, the Free Software Foundation gives permission |
| 18 | * for additional uses of the text contained in its release of GUILE. |
| 19 | * |
| 20 | * The exception is that, if you link the GUILE library with other files |
| 21 | * to produce an executable, this does not by itself cause the |
| 22 | * resulting executable to be covered by the GNU General Public License. |
| 23 | * Your use of that executable is in no way restricted on account of |
| 24 | * linking the GUILE library code into it. |
| 25 | * |
| 26 | * This exception does not however invalidate any other reasons why |
| 27 | * the executable file might be covered by the GNU General Public License. |
| 28 | * |
| 29 | * This exception applies only to the code released by the |
| 30 | * Free Software Foundation under the name GUILE. If you copy |
| 31 | * code from other Free Software Foundation releases into a copy of |
| 32 | * GUILE, as the General Public License permits, the exception does |
| 33 | * not apply to the code that you add in this way. To avoid misleading |
| 34 | * anyone as to the status of such modified files, you must delete |
| 35 | * this exception notice from them. |
| 36 | * |
| 37 | * If you write modifications of your own for GUILE, it is your choice |
| 38 | * whether to permit this exception to apply to your modifications. |
| 39 | * If you do not wish that, delete this exception notice. |
| 40 | */ |
| 41 | \f |
| 42 | |
| 43 | #include <stdio.h> |
| 44 | #include "_scm.h" |
| 45 | #include "genio.h" |
| 46 | |
| 47 | #include "stackchk.h" |
| 48 | \f |
| 49 | |
| 50 | /* {Stack Checking} |
| 51 | */ |
| 52 | |
| 53 | #ifdef STACK_CHECKING |
| 54 | int scm_stack_checking_enabled_p; |
| 55 | |
| 56 | SCM_SYMBOL (scm_stack_overflow_key, "stack-overflow"); |
| 57 | |
| 58 | void |
| 59 | scm_report_stack_overflow () |
| 60 | { |
| 61 | scm_stack_checking_enabled_p = 0; |
| 62 | scm_error (scm_stack_overflow_key, |
| 63 | NULL, |
| 64 | "Stack overflow", |
| 65 | SCM_BOOL_F, |
| 66 | SCM_BOOL_F); |
| 67 | } |
| 68 | |
| 69 | #endif |
| 70 | |
| 71 | long |
| 72 | scm_stack_size (start) |
| 73 | SCM_STACKITEM *start; |
| 74 | { |
| 75 | SCM_STACKITEM stack; |
| 76 | #ifdef SCM_STACK_GROWS_UP |
| 77 | return &stack - start; |
| 78 | #else |
| 79 | return start - &stack; |
| 80 | #endif /* def SCM_STACK_GROWS_UP */ |
| 81 | } |
| 82 | |
| 83 | |
| 84 | void |
| 85 | scm_stack_report () |
| 86 | { |
| 87 | SCM_STACKITEM stack; |
| 88 | scm_intprint (scm_stack_size (SCM_BASE (scm_rootcont)) * sizeof (SCM_STACKITEM), |
| 89 | 16, scm_cur_errp); |
| 90 | scm_gen_puts (scm_regular_string, " of stack: 0x", scm_cur_errp); |
| 91 | scm_intprint ((long) SCM_BASE (scm_rootcont), 16, scm_cur_errp); |
| 92 | scm_gen_puts (scm_regular_string, " - 0x", scm_cur_errp); |
| 93 | scm_intprint ((long) &stack, 16, scm_cur_errp); |
| 94 | scm_gen_puts (scm_regular_string, "\n", scm_cur_errp); |
| 95 | } |
| 96 | |
| 97 | |
| 98 | |
| 99 | |
| 100 | void |
| 101 | scm_init_stackchk () |
| 102 | { |
| 103 | #include "stackchk.x" |
| 104 | } |