old-cross-binutils/gdb/scm-lang.c

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2007-08-09 23:01:17 +00:00
/* Scheme/Guile language support routines for GDB, the GNU debugger.
Copyright (C) 1995, 1996, 1998, 2000, 2001, 2002, 2003, 2004, 2005, 2007,
2008, 2009 Free Software Foundation, Inc.
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This file is part of GDB.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>. */
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#include "defs.h"
#include "symtab.h"
#include "gdbtypes.h"
#include "expression.h"
#include "parser-defs.h"
#include "language.h"
#include "value.h"
#include "c-lang.h"
#include "scm-lang.h"
#include "scm-tags.h"
#include "source.h"
#include "gdb_string.h"
#include "gdbcore.h"
#include "infcall.h"
#include "objfiles.h"
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extern void _initialize_scheme_language (void);
static struct value *evaluate_subexp_scm (struct type *, struct expression *,
int *, enum noside);
static struct value *scm_lookup_name (char *);
static int in_eval_c (void);
struct type *builtin_type_scm;
void
scm_printchar (int c, struct ui_file *stream)
{
fprintf_filtered (stream, "#\\%c", c);
}
static void
scm_printstr (struct ui_file *stream, const gdb_byte *string,
gdb * varobj.c (value_get_print_value): Include valprint.h. (value_get_print_value): Use get_formatted_print_options. * value.h (struct value_print_options): Declare. (value_print, val_print, common_val_print, val_print_string): Update. * value.c: Include valprint.h. (show_values): Use get_user_print_options. (show_convenience): Likewise. * valprint.h (prettyprint_arrays, prettyprint_structs): Don't declare. (struct value_print_options): New type. (vtblprint, unionprint, addressprint, objectprint, print_max, inspect_it, repeat_count_threshold, output_format, stop_print_at_null): Don't declare. (user_print_options, get_user_print_options, get_raw_print_options, get_formatted_print_options): Declare. (print_array_indexes_p): Don't declare. (maybe_print_array_index, val_print_array_elements): Update. * valprint.c (print_max): Remove. (user_print_options): New global. (get_user_print_options, get_raw_print_options, get_formatted_print_options): New functions. (print_array_indexes, repeat_count_threshold, stop_print_at_null, prettyprint_structs, prettyprint_arrays, unionprint, addressprint): Remove. (val_print): Remove format, deref_ref, pretty arguments; add options. Update. (common_val_print): Likewise. (print_array_indexes_p): Remove. (maybe_print_array_index): Remove format, pretty arguments; add options. Update. (val_print_array_elements): Remove format, deref_ref, pretty arguments; add options. Update. (val_print_string): Add options argument. Update. (_initialize_valprint): Use user_print_options. (output_format): Remove. (set_output_radix_1): Use user_print_options. * typeprint.c: Include valprint.h. (objectprint): Don't declare. (whatis_exp): Use get_user_print_options. * tui/tui-regs.c: Include valprint.h. (tui_register_format): Use get_formatted_print_options. * tracepoint.c: Include valprint.h. (addressprint): Don't declare. (trace_mention): Use get_user_print_options. (tracepoints_info): Likewise. * stack.c (print_frame_args): Use get_raw_print_options. (print_frame_info): Use get_user_print_options. (print_frame): Likewise. * sh64-tdep.c: Include valprint.h (sh64_do_register): Use get_formatted_print_options. * scm-valprint.c (scm_inferior_print): Remove format, deref_ref, pretty arguments; add options. (scm_scmlist_print): Likewise. Update. (scm_scmval_print): Likewise. (scm_val_print): Likewise. (scm_value_print): Remove format, pretty arguments; add options. Update. * scm-lang.h (scm_value_print, scm_val_print, scm_scmval_print): Update. * scm-lang.c (scm_printstr): Add options argument. * python/python-value.c: Include valprint.h. (valpy_str): Use get_user_print_options. * printcmd.c: Include valprint.h. (addressprint): Don't declare. (inspect_it): Remove. (print_formatted): Remove format option; add options. Update. (print_scalar_formatted): Likewise. (print_address_demangle): Use get_user_print_options. (do_examine): Use get_formatted_print_options. (print_command_1): Likewise. (output_command): Use get_formatted_print_options. (do_one_display): Likewise. (print_variable_value): Use get_user_print_options. * p-valprint.c (pascal_val_print): Remove format, deref_ref, pretty arguments; add options. Update. (pascal_value_print): Remove format, pretty arguments; add options. Update. (vtblprint, objectprint): Don't declare. (pascal_static_field_print): Remove. (pascal_object_print_value_fields): Remove format, pretty arguments; add options. Update. (pascal_object_print_static_field): Likewise. (_initialize_pascal_valprint): Use user_print_options. Update. * p-lang.h (pascal_val_print, pascal_value_print, pascal_printstr, pascal_object_print_value_fields): Update. (vtblprint, static_field_print): Don't declare. * p-lang.c (pascal_printstr): Add options argument. Update. * objc-lang.c (objc_printstr): Add options argument. Update. * mt-tdep.c: Include valprint.h. (mt_registers_info): Use get_raw_print_options. * mips-tdep.c: Include valprint.h. (mips_print_fp_register): Use get_formatted_print_options. (mips_print_register): Likewise. * mi/mi-main.c: Include valprint.h. (get_register): Use get_user_print_options. (mi_cmd_data_evaluate_expression): Likewise. (mi_cmd_data_read_memory): Use get_formatted_print_options. * mi/mi-cmd-stack.c: Include valprint.h. (list_args_or_locals): Use get_raw_print_options. * m2-valprint.c (print_function_pointer_address): Add addressprint argument. (m2_print_long_set): Remove format, pretty arguments. (m2_print_unbounded_array): Remove format, deref_ref, pretty arguments; add options. Update. (print_unpacked_pointer): Remove format argument; add options. Now static. Update. (print_variable_at_address): Remove format, deref_ref, pretty arguments; add options. Update. (m2_print_array_contents): Likewise. (m2_val_print): Likewise. * m2-lang.h (m2_val_print): Update. * m2-lang.c (m2_printstr): Add options argument. Update. * language.h (struct value_print_options): Declare. (struct language_defn) <la_printstr>: Add options argument. <la_val_print>: Remove format, deref_ref, pretty argument; add options. <la_value_print>: Remove format, pretty arguments; add options. <la_print_array_index>: Likewise. (LA_VAL_PRINT, LA_VALUE_PRINT, LA_PRINT_STRING, LA_PRINT_ARRAY_INDEX): Update. (default_print_array_index): Update. * language.c (default_print_array_index): Remove format, pretty arguments; add options. Update. (unk_lang_printstr): Add options argument. (unk_lang_val_print): Remove format, deref_ref, pretty arguments; add options. (unk_lang_value_print): Remove format, pretty arguments; add options. * jv-valprint.c (java_value_print): Remove format, pretty arguments; add options. Update. (java_print_value_fields): Likewise. (java_val_print): Remove format, deref_ref, pretty arguments; add options. Update. * jv-lang.h (java_val_print, java_value_print): Declare. * infcmd.c: Include valprint.h. (print_return_value): Use get_raw_print_options. (default_print_registers_info): Use get_user_print_options, get_formatted_print_options. (registers_info): Use get_formatted_print_options. * gdbtypes.h (struct value_print_options): Declare. (print_scalar_formatted): Update. * f-valprint.c (f77_print_array_1): Remove format, deref_ref, pretty arguments; add options. Update. (f77_print_array): Likewise. (f_val_print): Likewise. * f-lang.h (f_val_print): Update. * f-lang.c (f_printstr): Add options argument. Update. (c_value_print): Update declaration. * expprint.c: Include valprint.h. (print_subexp_standard): Use get_raw_print_options, get_user_print_options. * eval.c: Include valprint.h. (objectprint): Don't declare. (evaluate_subexp_standard): Use get_user_print_options. * cp-valprint.c (vtblprint, objectprint, static_field_print): Remove. (cp_print_value_fields): Remove format, pretty arguments; add options. Update. (cp_print_value): Likewise. (cp_print_static_field): Likewise. (_initialize_cp_valprint): Use user_print_options. Update. * c-valprint.c (print_function_pointer_address): Add addressprint argument. (c_val_print): Remove format, deref_ref, pretty arguments; add options. Update. (c_value_print): Add options argument. Update. * c-lang.h (c_val_print, c_value_print, c_printstr): Update. (vtblprint, static_field_print): Don't declare. (cp_print_value_fields): Update. * c-lang.c (c_printstr): Add options argument. Update. * breakpoint.c: Include valprint.h. (addressprint): Don't declare. (watchpoint_value_print): Use get_user_print_options. (print_one_breakpoint_location): Likewise. (breakpoint_1, print_it_catch_fork, print_it_catch_vfork, mention, print_exception_catchpoint): Likewise. * auxv.c (fprint_target_auxv): Don't declare addressprint. Use get_user_print_options. * ada-valprint.c (struct ada_val_print_args): Remove format, deref_ref, and pretty; add options. (print_optional_low_bound): Add options argument. (val_print_packed_array_elements): Remove format and pretty arguments; add options. Update. (printstr): Add options argument. Update. (ada_printstr): Likewise. (ada_val_print): Remove format, deref_ref, pretty arguments; add options argument. Update. (ada_val_print_stub): Update. (ada_val_print_array): Remove format, deref_ref, pretty arguments; add options. Update. (ada_val_print_1): Likewise. (print_variant_part): Likewise. (ada_value_print): Remove format, pretty arguments; add options. Update. (print_record): Likewise. (print_field_values): Likewise. * ada-lang.h (ada_val_print, ada_value_print, ada_printstr): Update. * ada-lang.c (ada_print_array_index): Add options argument; remove format and pretty arguments. (print_one_exception): Use get_user_print_options. gdb/testsuite * gdb.base/exprs.exp (test_expr): Add enum formatting tests.
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unsigned int length, int width, int force_ellipses,
const struct value_print_options *options)
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{
fprintf_filtered (stream, "\"%s\"", string);
}
int
is_scmvalue_type (struct type *type)
{
if (TYPE_NAME (type) && strcmp (TYPE_NAME (type), "SCM") == 0)
{
return 1;
}
return 0;
}
/* Get the INDEX'th SCM value, assuming SVALUE is the address
of the 0'th one. */
LONGEST
scm_get_field (LONGEST svalue, int index)
{
gdb_byte buffer[20];
read_memory (SCM2PTR (svalue) + index * TYPE_LENGTH (builtin_type_scm),
buffer, TYPE_LENGTH (builtin_type_scm));
return extract_signed_integer (buffer, TYPE_LENGTH (builtin_type_scm));
}
/* Unpack a value of type TYPE in buffer VALADDR as an integer
(if CONTEXT == TYPE_CODE_IN), a pointer (CONTEXT == TYPE_CODE_PTR),
or Boolean (CONTEXT == TYPE_CODE_BOOL). */
LONGEST
scm_unpack (struct type *type, const gdb_byte *valaddr, enum type_code context)
{
if (is_scmvalue_type (type))
{
LONGEST svalue = extract_signed_integer (valaddr, TYPE_LENGTH (type));
if (context == TYPE_CODE_BOOL)
{
if (svalue == SCM_BOOL_F)
return 0;
else
return 1;
}
switch (7 & (int) svalue)
{
case 2:
case 6: /* fixnum */
return svalue >> 2;
case 4: /* other immediate value */
if (SCM_ICHRP (svalue)) /* character */
return SCM_ICHR (svalue);
else if (SCM_IFLAGP (svalue))
{
switch ((int) svalue)
{
#ifndef SICP
case SCM_EOL:
#endif
case SCM_BOOL_F:
return 0;
case SCM_BOOL_T:
return 1;
}
}
error (_("Value can't be converted to integer."));
default:
return svalue;
}
}
else
return unpack_long (type, valaddr);
}
/* True if we're correctly in Guile's eval.c (the evaluator and apply). */
static int
in_eval_c (void)
{
struct symtab_and_line cursal = get_current_source_symtab_and_line ();
if (cursal.symtab && cursal.symtab->filename)
{
char *filename = cursal.symtab->filename;
int len = strlen (filename);
if (len >= 6 && strcmp (filename + len - 6, "eval.c") == 0)
return 1;
}
return 0;
}
/* Lookup a value for the variable named STR.
First lookup in Scheme context (using the scm_lookup_cstr inferior
function), then try lookup_symbol for compiled variables. */
static struct value *
scm_lookup_name (char *str)
{
struct objfile *objf;
struct gdbarch *gdbarch;
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struct value *args[3];
int len = strlen (str);
struct value *func;
struct value *val;
struct symbol *sym;
func = find_function_in_inferior ("scm_lookup_cstr", &objf);
gdbarch = get_objfile_arch (objf);
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args[0] = value_allocate_space_in_inferior (len);
args[1] = value_from_longest (builtin_type (gdbarch)->builtin_int, len);
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write_memory (value_as_long (args[0]), (gdb_byte *) str, len);
if (in_eval_c ()
&& (sym = lookup_symbol ("env",
expression_context_block,
* symtab.h (lookup_symbol_in_language): Remove SYMTAB parameter. (lookup_symbol): Likewise. * symtab.c (lookup_symbol_in_language): Remove SYMTAB parameter. (lookup_symbol): Likewise. (search_symbols): Update. * linespec.c (find_methods, collect_methods): Update. (add_matching_methods, add_constructors): Update. (decode_compound, decode_dollar, decode_variable): Update. (lookup_prefix_sym): Update. (symbol_found): Remove SYM_SYMTAB parameter. Use SYMBOL_SYMTAB (sym) instead. * gdbtypes.c (lookup_typename): Update. (lookup_struct, lookup_union, lookup_enum): Update. (lookup_template_type): Update. (check_typedef): Update. * language.c (lang_bool_type): Update. * mdebugread.c (parse_procedure): Update. * mi/mi-cmd-stack.c (list_args_or_locals): Update. * parse.c (write_dollar_variable): Update. * printcmd.c (address_info): Update. * source.c (select_source_symtab): Update. * stack.c (print_frame_args, print_frame_arg_vars): Update. * valops.c (find_function_in_inferior): Update. (value_struct_elt_for_reference): Update. * value.c (value_static_field, value_fn_field): Update. * alpha-mdebug-tdep.c (find_proc_desc): Update. * arm-tdep.c (arm_skip_prologue): Update. * mt-tdep.c (mt_skip_prologue): Update. * xstormy16-tdep.c (xstormy16_skip_prologue): Update. * ada-lang.h (struct ada_symbol_info): Remove SYMTAB member. * ada-lang.c (ada_add_block_symbols): Remove SYMTAB parameter. (add_defn_to_vec): Likewise. (ada_add_block_symbols): Likewise. (lookup_cached_symbol, cache_symbol): Likewise. (standard_lookup): Update. (ada_lookup_symbol_list): Update. * c-valprint.c (c_val_print): Update. * cp-support.c (cp_lookup_rtti_type): Update. * jv-lang.c (java_lookup_class, get_java_object_type): Update. * objc-lang.c (lookup_struct_typedef, find_imps): Update. * p-valprint.c (pascal_val_print): Update. * scm-lang.c (scm_lookup_name): Update. * c-exp.y: Update. * f-exp.y: Update. * jv-exp.y: Update. * m2-exp.y: Update. * objc-exp.y: Update. * p-exp.y: Update.
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VAR_DOMAIN, (int *) NULL)) != NULL)
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args[2] = value_of_variable (sym, expression_context_block);
else
/* FIXME in this case, we should try lookup_symbol first */
args[2] = value_from_longest (builtin_type_scm, SCM_EOL);
val = call_function_by_hand (func, 3, args);
if (!value_logical_not (val))
return value_ind (val);
sym = lookup_symbol (str,
expression_context_block,
* symtab.h (lookup_symbol_in_language): Remove SYMTAB parameter. (lookup_symbol): Likewise. * symtab.c (lookup_symbol_in_language): Remove SYMTAB parameter. (lookup_symbol): Likewise. (search_symbols): Update. * linespec.c (find_methods, collect_methods): Update. (add_matching_methods, add_constructors): Update. (decode_compound, decode_dollar, decode_variable): Update. (lookup_prefix_sym): Update. (symbol_found): Remove SYM_SYMTAB parameter. Use SYMBOL_SYMTAB (sym) instead. * gdbtypes.c (lookup_typename): Update. (lookup_struct, lookup_union, lookup_enum): Update. (lookup_template_type): Update. (check_typedef): Update. * language.c (lang_bool_type): Update. * mdebugread.c (parse_procedure): Update. * mi/mi-cmd-stack.c (list_args_or_locals): Update. * parse.c (write_dollar_variable): Update. * printcmd.c (address_info): Update. * source.c (select_source_symtab): Update. * stack.c (print_frame_args, print_frame_arg_vars): Update. * valops.c (find_function_in_inferior): Update. (value_struct_elt_for_reference): Update. * value.c (value_static_field, value_fn_field): Update. * alpha-mdebug-tdep.c (find_proc_desc): Update. * arm-tdep.c (arm_skip_prologue): Update. * mt-tdep.c (mt_skip_prologue): Update. * xstormy16-tdep.c (xstormy16_skip_prologue): Update. * ada-lang.h (struct ada_symbol_info): Remove SYMTAB member. * ada-lang.c (ada_add_block_symbols): Remove SYMTAB parameter. (add_defn_to_vec): Likewise. (ada_add_block_symbols): Likewise. (lookup_cached_symbol, cache_symbol): Likewise. (standard_lookup): Update. (ada_lookup_symbol_list): Update. * c-valprint.c (c_val_print): Update. * cp-support.c (cp_lookup_rtti_type): Update. * jv-lang.c (java_lookup_class, get_java_object_type): Update. * objc-lang.c (lookup_struct_typedef, find_imps): Update. * p-valprint.c (pascal_val_print): Update. * scm-lang.c (scm_lookup_name): Update. * c-exp.y: Update. * f-exp.y: Update. * jv-exp.y: Update. * m2-exp.y: Update. * objc-exp.y: Update. * p-exp.y: Update.
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VAR_DOMAIN, (int *) NULL);
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if (sym)
return value_of_variable (sym, NULL);
error (_("No symbol \"%s\" in current context."), str);
}
struct value *
scm_evaluate_string (char *str, int len)
{
struct value *func;
struct value *addr = value_allocate_space_in_inferior (len + 1);
LONGEST iaddr = value_as_long (addr);
write_memory (iaddr, (gdb_byte *) str, len);
/* FIXME - should find and pass env */
write_memory (iaddr + len, (gdb_byte *) "", 1);
func = find_function_in_inferior ("scm_evstr", NULL);
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return call_function_by_hand (func, 1, &addr);
}
static struct value *
evaluate_exp (struct type *expect_type, struct expression *exp,
int *pos, enum noside noside)
{
enum exp_opcode op = exp->elts[*pos].opcode;
int len, pc;
char *str;
switch (op)
{
case OP_NAME:
pc = (*pos)++;
len = longest_to_int (exp->elts[pc + 1].longconst);
(*pos) += 3 + BYTES_TO_EXP_ELEM (len + 1);
if (noside == EVAL_SKIP)
goto nosideret;
str = &exp->elts[pc + 2].string;
return scm_lookup_name (str);
case OP_STRING:
pc = (*pos)++;
len = longest_to_int (exp->elts[pc + 1].longconst);
(*pos) += 3 + BYTES_TO_EXP_ELEM (len + 1);
if (noside == EVAL_SKIP)
goto nosideret;
str = &exp->elts[pc + 2].string;
return scm_evaluate_string (str, len);
default:;
}
return evaluate_subexp_standard (expect_type, exp, pos, noside);
nosideret:
return value_from_longest (builtin_type_int8, (LONGEST) 1);
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}
const struct exp_descriptor exp_descriptor_scm =
{
print_subexp_standard,
operator_length_standard,
op_name_standard,
dump_subexp_body_standard,
evaluate_exp
};
const struct language_defn scm_language_defn =
{
"scheme", /* Language name */
language_scm,
range_check_off,
type_check_off,
case_sensitive_off,
array_row_major,
macro_expansion_no,
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&exp_descriptor_scm,
scm_parse,
c_error,
null_post_parser,
scm_printchar, /* Print a character constant */
scm_printstr, /* Function to print string constant */
NULL, /* Function to print a single character */
c_print_type, /* Print a type using appropriate syntax */
default_print_typedef, /* Print a typedef using appropriate syntax */
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scm_val_print, /* Print a value using appropriate syntax */
scm_value_print, /* Print a top-level value */
NULL, /* Language specific skip_trampoline */
NULL, /* name_of_this */
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basic_lookup_symbol_nonlocal, /* lookup_symbol_nonlocal */
basic_lookup_transparent_type,/* lookup_transparent_type */
NULL, /* Language specific symbol demangler */
NULL, /* Language specific class_name_from_physname */
NULL, /* expression operators for printing */
1, /* c-style arrays */
0, /* String lower bound */
default_word_break_characters,
default_make_symbol_completion_list,
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c_language_arch_info,
default_print_array_index,
default_pass_by_reference,
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LANG_MAGIC
};
void
_initialize_scheme_language (void)
{
add_language (&scm_language_defn);
builtin_type_scm =
init_type (TYPE_CODE_INT,
gdbarch_long_bit (current_gdbarch) / TARGET_CHAR_BIT,
0, "SCM", (struct objfile *) NULL);
}