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665 lines
20 KiB
C
665 lines
20 KiB
C
/* Internal header for GDB/Scheme code.
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Copyright (C) 2014-2018 Free Software Foundation, Inc.
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This file is part of GDB.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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/* See README file in this directory for implementation notes, coding
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conventions, et.al. */
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#ifndef GDB_GUILE_INTERNAL_H
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#define GDB_GUILE_INTERNAL_H
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#include "hashtab.h"
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#include "extension-priv.h"
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#include "symtab.h"
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#include "libguile.h"
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struct block;
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struct frame_info;
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struct objfile;
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struct symbol;
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/* A function to pass to the safe-call routines to ignore things like
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memory errors. */
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typedef int excp_matcher_func (SCM key);
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/* Scheme variables to define during initialization. */
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typedef struct
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{
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const char *name;
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SCM value;
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const char *doc_string;
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} scheme_variable;
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/* End of scheme_variable table mark. */
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#define END_VARIABLES { NULL, SCM_BOOL_F, NULL }
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/* Although scm_t_subr is meant to hold a function pointer, at least
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in some versions of guile, it is actually a typedef to "void *".
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That means that in C++, an explicit cast is necessary to convert
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function pointer to scm_t_subr. But a cast also makes it possible
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to pass function pointers with the wrong type by mistake. So
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instead of adding such casts throughout, we use 'as_a_scm_t_subr'
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to do the conversion, which (only) has overloads for function
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pointer types that are valid.
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See https://lists.gnu.org/archive/html/guile-devel/2013-03/msg00001.html.
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*/
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static inline scm_t_subr
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as_a_scm_t_subr (SCM (*func) (void))
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{
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return (scm_t_subr) func;
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}
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static inline scm_t_subr
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as_a_scm_t_subr (SCM (*func) (SCM))
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{
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return (scm_t_subr) func;
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}
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static inline scm_t_subr
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as_a_scm_t_subr (SCM (*func) (SCM, SCM))
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{
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return (scm_t_subr) func;
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}
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static inline scm_t_subr
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as_a_scm_t_subr (SCM (*func) (SCM, SCM, SCM))
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{
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return (scm_t_subr) func;
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}
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/* Scheme functions to define during initialization. */
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typedef struct
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{
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const char *name;
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int required;
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int optional;
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int rest;
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scm_t_subr func;
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const char *doc_string;
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} scheme_function;
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/* End of scheme_function table mark. */
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#define END_FUNCTIONS { NULL, 0, 0, 0, NULL, NULL }
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/* Useful for defining a set of constants. */
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typedef struct
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{
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const char *name;
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int value;
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} scheme_integer_constant;
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#define END_INTEGER_CONSTANTS { NULL, 0 }
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/* Pass this instead of 0 to routines like SCM_ASSERT to indicate the value
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is not a function argument. */
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#define GDBSCM_ARG_NONE 0
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/* Ensure new code doesn't accidentally try to use this. */
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#undef scm_make_smob_type
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#define scm_make_smob_type USE_gdbscm_make_smob_type_INSTEAD
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/* They brought over () == #f from lisp.
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Let's avoid that for now. */
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#undef scm_is_bool
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#undef scm_is_false
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#undef scm_is_true
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#define scm_is_bool USE_gdbscm_is_bool_INSTEAD
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#define scm_is_false USE_gdbscm_is_false_INSTEAD
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#define scm_is_true USE_gdbscm_is_true_INSTEAD
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#define gdbscm_is_bool(scm) \
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(scm_is_eq ((scm), SCM_BOOL_F) || scm_is_eq ((scm), SCM_BOOL_T))
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#define gdbscm_is_false(scm) scm_is_eq ((scm), SCM_BOOL_F)
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#define gdbscm_is_true(scm) (!gdbscm_is_false (scm))
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#ifndef HAVE_SCM_NEW_SMOB
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/* Guile <= 2.0.5 did not provide this function, so provide it here. */
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static inline SCM
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scm_new_smob (scm_t_bits tc, scm_t_bits data)
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{
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SCM_RETURN_NEWSMOB (tc, data);
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}
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#endif
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/* Function name that is passed around in case an error needs to be reported.
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__func is in C99, but we provide a wrapper "just in case",
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and because FUNC_NAME is the canonical value used in guile sources.
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IWBN to use the Scheme version of the name (e.g. foo-bar vs foo_bar),
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but let's KISS for now. */
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#define FUNC_NAME __func__
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extern const char gdbscm_module_name[];
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extern const char gdbscm_init_module_name[];
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extern int gdb_scheme_initialized;
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extern int gdbscm_guile_major_version;
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extern int gdbscm_guile_minor_version;
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extern int gdbscm_guile_micro_version;
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extern const char gdbscm_print_excp_none[];
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extern const char gdbscm_print_excp_full[];
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extern const char gdbscm_print_excp_message[];
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extern const char *gdbscm_print_excp;
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extern SCM gdbscm_documentation_symbol;
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extern SCM gdbscm_invalid_object_error_symbol;
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extern SCM gdbscm_map_string;
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extern SCM gdbscm_array_string;
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extern SCM gdbscm_string_string;
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/* scm-utils.c */
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extern void gdbscm_define_variables (const scheme_variable *, int is_public);
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extern void gdbscm_define_functions (const scheme_function *, int is_public);
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extern void gdbscm_define_integer_constants (const scheme_integer_constant *,
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int is_public);
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extern void gdbscm_printf (SCM port, const char *format, ...)
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ATTRIBUTE_PRINTF (2, 3);
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extern void gdbscm_debug_display (SCM obj);
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extern void gdbscm_debug_write (SCM obj);
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extern void gdbscm_parse_function_args (const char *function_name,
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int beginning_arg_pos,
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const SCM *keywords,
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const char *format, ...);
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extern SCM gdbscm_scm_from_longest (LONGEST l);
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extern LONGEST gdbscm_scm_to_longest (SCM l);
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extern SCM gdbscm_scm_from_ulongest (ULONGEST l);
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extern ULONGEST gdbscm_scm_to_ulongest (SCM u);
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extern void gdbscm_dynwind_xfree (void *ptr);
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extern int gdbscm_is_procedure (SCM proc);
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extern char *gdbscm_gc_xstrdup (const char *);
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extern const char * const *gdbscm_gc_dup_argv (char **argv);
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extern int gdbscm_guile_version_is_at_least (int major, int minor, int micro);
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/* GDB smobs, from scm-gsmob.c */
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/* All gdb smobs must contain one of the following as the first member:
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gdb_smob, chained_gdb_smob, or eqable_gdb_smob.
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Chained GDB smobs should have chained_gdb_smob as their first member. The
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next,prev members of chained_gdb_smob allow for chaining gsmobs together so
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that, for example, when an objfile is deleted we can clean up all smobs that
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reference it.
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Eq-able GDB smobs should have eqable_gdb_smob as their first member. The
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containing_scm member of eqable_gdb_smob allows for returning the same gsmob
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instead of creating a new one, allowing them to be eq?-able.
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All other smobs should have gdb_smob as their first member.
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FIXME: dje/2014-05-26: gdb_smob was useful during early development as a
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"baseclass" for all gdb smobs. If it's still unused by gdb 8.0 delete it.
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IMPORTANT: chained_gdb_smob and eqable_gdb-smob are "subclasses" of
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gdb_smob. The layout of chained_gdb_smob,eqable_gdb_smob must match
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gdb_smob as if it is a subclass. To that end we use macro GDB_SMOB_HEAD
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to ensure this. */
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#define GDB_SMOB_HEAD \
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int empty_base_class;
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typedef struct
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{
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GDB_SMOB_HEAD
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} gdb_smob;
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typedef struct _chained_gdb_smob
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{
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GDB_SMOB_HEAD
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struct _chained_gdb_smob *prev;
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struct _chained_gdb_smob *next;
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} chained_gdb_smob;
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typedef struct _eqable_gdb_smob
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{
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GDB_SMOB_HEAD
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/* The object we are contained in.
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This can be used for several purposes.
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This is used by the eq? machinery: We need to be able to see if we have
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already created an object for a symbol, and if so use that SCM.
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This may also be used to protect the smob from GC if there is
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a reference to this smob from outside of GC space (i.e., from gdb).
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This can also be used in place of chained_gdb_smob where we need to
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keep track of objfile referencing objects. When the objfile is deleted
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we need to invalidate the objects: we can do that using the same hashtab
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used to record the smob for eq-ability. */
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SCM containing_scm;
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} eqable_gdb_smob;
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#undef GDB_SMOB_HEAD
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struct objfile;
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struct objfile_data;
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/* A predicate that returns non-zero if an object is a particular kind
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of gsmob. */
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typedef int (gsmob_pred_func) (SCM);
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extern scm_t_bits gdbscm_make_smob_type (const char *name, size_t size);
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extern void gdbscm_init_gsmob (gdb_smob *base);
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extern void gdbscm_init_chained_gsmob (chained_gdb_smob *base);
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extern void gdbscm_init_eqable_gsmob (eqable_gdb_smob *base,
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SCM containing_scm);
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extern void gdbscm_add_objfile_ref (struct objfile *objfile,
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const struct objfile_data *data_key,
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chained_gdb_smob *g_smob);
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extern void gdbscm_remove_objfile_ref (struct objfile *objfile,
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const struct objfile_data *data_key,
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chained_gdb_smob *g_smob);
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extern htab_t gdbscm_create_eqable_gsmob_ptr_map (htab_hash hash_fn,
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htab_eq eq_fn);
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extern eqable_gdb_smob **gdbscm_find_eqable_gsmob_ptr_slot
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(htab_t htab, eqable_gdb_smob *base);
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extern void gdbscm_fill_eqable_gsmob_ptr_slot (eqable_gdb_smob **slot,
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eqable_gdb_smob *base);
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extern void gdbscm_clear_eqable_gsmob_ptr_slot (htab_t htab,
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eqable_gdb_smob *base);
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/* Exceptions and calling out to Guile. */
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/* scm-exception.c */
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extern SCM gdbscm_make_exception (SCM tag, SCM args);
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extern int gdbscm_is_exception (SCM scm);
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extern SCM gdbscm_exception_key (SCM excp);
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extern SCM gdbscm_exception_args (SCM excp);
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extern SCM gdbscm_make_exception_with_stack (SCM key, SCM args, SCM stack);
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extern SCM gdbscm_make_error_scm (SCM key, SCM subr, SCM message,
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SCM args, SCM data);
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extern SCM gdbscm_make_error (SCM key, const char *subr, const char *message,
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SCM args, SCM data);
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extern SCM gdbscm_make_type_error (const char *subr, int arg_pos,
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SCM bad_value, const char *expected_type);
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extern SCM gdbscm_make_invalid_object_error (const char *subr, int arg_pos,
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SCM bad_value, const char *error);
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extern void gdbscm_invalid_object_error (const char *subr, int arg_pos,
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SCM bad_value, const char *error)
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ATTRIBUTE_NORETURN;
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extern SCM gdbscm_make_out_of_range_error (const char *subr, int arg_pos,
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SCM bad_value, const char *error);
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extern void gdbscm_out_of_range_error (const char *subr, int arg_pos,
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SCM bad_value, const char *error)
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ATTRIBUTE_NORETURN;
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extern SCM gdbscm_make_misc_error (const char *subr, int arg_pos,
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SCM bad_value, const char *error);
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extern void gdbscm_misc_error (const char *subr, int arg_pos,
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SCM bad_value, const char *error)
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ATTRIBUTE_NORETURN;
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extern void gdbscm_throw (SCM exception) ATTRIBUTE_NORETURN;
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extern SCM gdbscm_scm_from_gdb_exception (struct gdb_exception exception);
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extern void gdbscm_throw_gdb_exception (struct gdb_exception exception)
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ATTRIBUTE_NORETURN;
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extern void gdbscm_print_exception_with_stack (SCM port, SCM stack,
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SCM key, SCM args);
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extern void gdbscm_print_gdb_exception (SCM port, SCM exception);
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extern char *gdbscm_exception_message_to_string (SCM exception);
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extern excp_matcher_func gdbscm_memory_error_p;
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extern excp_matcher_func gdbscm_user_error_p;
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extern SCM gdbscm_make_memory_error (const char *subr, const char *msg,
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SCM args);
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extern void gdbscm_memory_error (const char *subr, const char *msg, SCM args)
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ATTRIBUTE_NORETURN;
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/* scm-safe-call.c */
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extern const char *gdbscm_with_guile (const char *(*func) (void *), void *data);
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extern SCM gdbscm_call_guile (SCM (*func) (void *), void *data,
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excp_matcher_func *ok_excps);
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extern SCM gdbscm_safe_call_0 (SCM proc, excp_matcher_func *ok_excps);
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extern SCM gdbscm_safe_call_1 (SCM proc, SCM arg0,
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excp_matcher_func *ok_excps);
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extern SCM gdbscm_safe_call_2 (SCM proc, SCM arg0, SCM arg1,
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excp_matcher_func *ok_excps);
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extern SCM gdbscm_safe_call_3 (SCM proc, SCM arg0, SCM arg1, SCM arg2,
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excp_matcher_func *ok_excps);
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extern SCM gdbscm_safe_call_4 (SCM proc, SCM arg0, SCM arg1, SCM arg2,
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SCM arg3,
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excp_matcher_func *ok_excps);
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extern SCM gdbscm_safe_apply_1 (SCM proc, SCM arg0, SCM args,
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excp_matcher_func *ok_excps);
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extern SCM gdbscm_unsafe_call_1 (SCM proc, SCM arg0);
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extern char *gdbscm_safe_eval_string (const char *string, int display_result);
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extern char *gdbscm_safe_source_script (const char *filename);
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extern void gdbscm_enter_repl (void);
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/* Interface to various GDB objects, in alphabetical order. */
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/* scm-arch.c */
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typedef struct _arch_smob arch_smob;
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extern struct gdbarch *arscm_get_gdbarch (arch_smob *a_smob);
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extern arch_smob *arscm_get_arch_smob_arg_unsafe (SCM arch_scm, int arg_pos,
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const char *func_name);
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extern SCM arscm_scm_from_arch (struct gdbarch *gdbarch);
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/* scm-block.c */
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extern SCM bkscm_scm_from_block (const struct block *block,
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struct objfile *objfile);
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extern const struct block *bkscm_scm_to_block
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(SCM block_scm, int arg_pos, const char *func_name, SCM *excp);
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/* scm-cmd.c */
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extern char *gdbscm_parse_command_name (const char *name,
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const char *func_name, int arg_pos,
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struct cmd_list_element ***base_list,
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struct cmd_list_element **start_list);
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extern int gdbscm_valid_command_class_p (int command_class);
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extern char *gdbscm_canonicalize_command_name (const char *name,
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int want_trailing_space);
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/* scm-frame.c */
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typedef struct _frame_smob frame_smob;
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extern int frscm_is_frame (SCM scm);
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extern frame_smob *frscm_get_frame_smob_arg_unsafe (SCM frame_scm, int arg_pos,
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const char *func_name);
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extern struct frame_info *frscm_frame_smob_to_frame (frame_smob *);
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/* scm-iterator.c */
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typedef struct _iterator_smob iterator_smob;
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extern SCM itscm_iterator_smob_object (iterator_smob *i_smob);
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extern SCM itscm_iterator_smob_progress (iterator_smob *i_smob);
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extern void itscm_set_iterator_smob_progress_x (iterator_smob *i_smob,
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SCM progress);
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extern const char *itscm_iterator_smob_name (void);
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extern SCM gdbscm_make_iterator (SCM object, SCM progress, SCM next);
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extern int itscm_is_iterator (SCM scm);
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extern SCM gdbscm_end_of_iteration (void);
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extern int itscm_is_end_of_iteration (SCM obj);
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extern SCM itscm_safe_call_next_x (SCM iter, excp_matcher_func *ok_excps);
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||
|
||
extern SCM itscm_get_iterator_arg_unsafe (SCM self, int arg_pos,
|
||
const char *func_name);
|
||
|
||
/* scm-lazy-string.c */
|
||
|
||
extern int lsscm_is_lazy_string (SCM scm);
|
||
|
||
extern SCM lsscm_make_lazy_string (CORE_ADDR address, int length,
|
||
const char *encoding, struct type *type);
|
||
|
||
extern struct value *lsscm_safe_lazy_string_to_value (SCM string,
|
||
int arg_pos,
|
||
const char *func_name,
|
||
SCM *except_scmp);
|
||
|
||
extern void lsscm_val_print_lazy_string
|
||
(SCM string, struct ui_file *stream,
|
||
const struct value_print_options *options);
|
||
|
||
/* scm-objfile.c */
|
||
|
||
typedef struct _objfile_smob objfile_smob;
|
||
|
||
extern SCM ofscm_objfile_smob_pretty_printers (objfile_smob *o_smob);
|
||
|
||
extern objfile_smob *ofscm_objfile_smob_from_objfile (struct objfile *objfile);
|
||
|
||
extern SCM ofscm_scm_from_objfile (struct objfile *objfile);
|
||
|
||
/* scm-progspace.c */
|
||
|
||
typedef struct _pspace_smob pspace_smob;
|
||
|
||
extern SCM psscm_pspace_smob_pretty_printers (const pspace_smob *);
|
||
|
||
extern pspace_smob *psscm_pspace_smob_from_pspace (struct program_space *);
|
||
|
||
extern SCM psscm_scm_from_pspace (struct program_space *);
|
||
|
||
/* scm-string.c */
|
||
|
||
extern int gdbscm_scm_string_to_int (SCM string);
|
||
|
||
extern char *gdbscm_scm_to_c_string (SCM string);
|
||
|
||
extern SCM gdbscm_scm_from_c_string (const char *string);
|
||
|
||
extern SCM gdbscm_scm_from_printf (const char *format, ...)
|
||
ATTRIBUTE_PRINTF (1, 2);
|
||
|
||
extern char *gdbscm_scm_to_string (SCM string, size_t *lenp,
|
||
const char *charset,
|
||
int strict, SCM *except_scmp);
|
||
|
||
extern SCM gdbscm_scm_from_string (const char *string, size_t len,
|
||
const char *charset, int strict);
|
||
|
||
extern char *gdbscm_scm_to_host_string (SCM string, size_t *lenp, SCM *except);
|
||
|
||
extern SCM gdbscm_scm_from_host_string (const char *string, size_t len);
|
||
|
||
/* scm-symbol.c */
|
||
|
||
extern int syscm_is_symbol (SCM scm);
|
||
|
||
extern SCM syscm_scm_from_symbol (struct symbol *symbol);
|
||
|
||
extern struct symbol *syscm_get_valid_symbol_arg_unsafe
|
||
(SCM self, int arg_pos, const char *func_name);
|
||
|
||
/* scm-symtab.c */
|
||
|
||
extern SCM stscm_scm_from_symtab (struct symtab *symtab);
|
||
|
||
extern SCM stscm_scm_from_sal (struct symtab_and_line sal);
|
||
|
||
/* scm-type.c */
|
||
|
||
typedef struct _type_smob type_smob;
|
||
|
||
extern int tyscm_is_type (SCM scm);
|
||
|
||
extern SCM tyscm_scm_from_type (struct type *type);
|
||
|
||
extern type_smob *tyscm_get_type_smob_arg_unsafe (SCM type_scm, int arg_pos,
|
||
const char *func_name);
|
||
|
||
extern struct type *tyscm_scm_to_type (SCM t_scm);
|
||
|
||
extern struct type *tyscm_type_smob_type (type_smob *t_smob);
|
||
|
||
extern SCM tyscm_scm_from_field (SCM type_scm, int field_num);
|
||
|
||
/* scm-value.c */
|
||
|
||
extern struct value *vlscm_scm_to_value (SCM scm);
|
||
|
||
extern int vlscm_is_value (SCM scm);
|
||
|
||
extern SCM vlscm_scm_from_value (struct value *value);
|
||
|
||
extern SCM vlscm_scm_from_value_unsafe (struct value *value);
|
||
|
||
extern struct value *vlscm_convert_typed_value_from_scheme
|
||
(const char *func_name, int obj_arg_pos, SCM obj,
|
||
int type_arg_pos, SCM type_scm, struct type *type, SCM *except_scmp,
|
||
struct gdbarch *gdbarch, const struct language_defn *language);
|
||
|
||
extern struct value *vlscm_convert_value_from_scheme
|
||
(const char *func_name, int obj_arg_pos, SCM obj, SCM *except_scmp,
|
||
struct gdbarch *gdbarch, const struct language_defn *language);
|
||
|
||
/* stript_lang methods */
|
||
|
||
extern objfile_script_sourcer_func gdbscm_source_objfile_script;
|
||
extern objfile_script_executor_func gdbscm_execute_objfile_script;
|
||
|
||
extern int gdbscm_auto_load_enabled (const struct extension_language_defn *);
|
||
|
||
extern void gdbscm_preserve_values
|
||
(const struct extension_language_defn *,
|
||
struct objfile *, htab_t copied_types);
|
||
|
||
extern enum ext_lang_rc gdbscm_apply_val_pretty_printer
|
||
(const struct extension_language_defn *,
|
||
struct type *type,
|
||
LONGEST embedded_offset, CORE_ADDR address,
|
||
struct ui_file *stream, int recurse,
|
||
struct value *val,
|
||
const struct value_print_options *options,
|
||
const struct language_defn *language);
|
||
|
||
extern int gdbscm_breakpoint_has_cond (const struct extension_language_defn *,
|
||
struct breakpoint *b);
|
||
|
||
extern enum ext_lang_bp_stop gdbscm_breakpoint_cond_says_stop
|
||
(const struct extension_language_defn *, struct breakpoint *b);
|
||
|
||
/* Initializers for each piece of Scheme support, in alphabetical order. */
|
||
|
||
extern void gdbscm_initialize_arches (void);
|
||
extern void gdbscm_initialize_auto_load (void);
|
||
extern void gdbscm_initialize_blocks (void);
|
||
extern void gdbscm_initialize_breakpoints (void);
|
||
extern void gdbscm_initialize_commands (void);
|
||
extern void gdbscm_initialize_disasm (void);
|
||
extern void gdbscm_initialize_exceptions (void);
|
||
extern void gdbscm_initialize_frames (void);
|
||
extern void gdbscm_initialize_iterators (void);
|
||
extern void gdbscm_initialize_lazy_strings (void);
|
||
extern void gdbscm_initialize_math (void);
|
||
extern void gdbscm_initialize_objfiles (void);
|
||
extern void gdbscm_initialize_pretty_printers (void);
|
||
extern void gdbscm_initialize_parameters (void);
|
||
extern void gdbscm_initialize_ports (void);
|
||
extern void gdbscm_initialize_pspaces (void);
|
||
extern void gdbscm_initialize_smobs (void);
|
||
extern void gdbscm_initialize_strings (void);
|
||
extern void gdbscm_initialize_symbols (void);
|
||
extern void gdbscm_initialize_symtabs (void);
|
||
extern void gdbscm_initialize_types (void);
|
||
extern void gdbscm_initialize_values (void);
|
||
|
||
/* Use these after a TRY_CATCH to throw the appropriate Scheme exception
|
||
if a GDB error occurred. */
|
||
|
||
#define GDBSCM_HANDLE_GDB_EXCEPTION(exception) \
|
||
do { \
|
||
if (exception.reason < 0) \
|
||
{ \
|
||
gdbscm_throw_gdb_exception (exception); \
|
||
/*NOTREACHED */ \
|
||
} \
|
||
} while (0)
|
||
|
||
/* If cleanups are establish outside the TRY_CATCH block, use this version. */
|
||
|
||
#define GDBSCM_HANDLE_GDB_EXCEPTION_WITH_CLEANUPS(exception, cleanups) \
|
||
do { \
|
||
if (exception.reason < 0) \
|
||
{ \
|
||
do_cleanups (cleanups); \
|
||
gdbscm_throw_gdb_exception (exception); \
|
||
/*NOTREACHED */ \
|
||
} \
|
||
} while (0)
|
||
|
||
#endif /* GDB_GUILE_INTERNAL_H */
|