old-cross-binutils/gdb/parse.c

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/* Parse expressions for GDB.
2007-01-09 17:59:20 +00:00
Copyright (C) 1986, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997,
1998, 1999, 2000, 2001, 2004, 2005, 2007, 2008, 2009
Free Software Foundation, Inc.
Modified from expread.y by the Department of Computer Science at the
State University of New York at Buffalo, 1991.
1999-07-07 20:19:36 +00:00
This file is part of GDB.
1999-07-07 20:19:36 +00:00
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
1999-07-07 20:19:36 +00:00
(at your option) any later version.
1999-07-07 20:19:36 +00:00
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.
1999-07-07 20:19:36 +00:00
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>. */
/* Parse an expression from text in a string,
and return the result as a struct expression pointer.
That structure contains arithmetic operations in reverse polish,
with constants represented by operations that are followed by special data.
See expression.h for the details of the format.
What is important here is that it can be built up sequentially
during the process of parsing; the lower levels of the tree always
come first in the result. */
1999-07-07 20:19:36 +00:00
1999-06-07 19:19:32 +00:00
#include <ctype.h>
#include "defs.h"
#include "gdb_string.h"
#include "symtab.h"
#include "gdbtypes.h"
#include "frame.h"
#include "expression.h"
#include "value.h"
#include "command.h"
#include "language.h"
#include "f-lang.h"
#include "parser-defs.h"
#include "gdbcmd.h"
1999-07-07 20:19:36 +00:00
#include "symfile.h" /* for overlay functions */
2007-05-31 Markus Deuling <deuling@de.ibm.com> * gdbarch.sh (NUM_REGS): Replace by gdbarch_num_regs. * i386-tdep.c (i386_dbx_reg_to_regnum) (i386_svr4_reg_to_regnum): Likewise. * inf-ptrace.c (inf_ptrace_fetch_registers) (inf_ptrace_store_registers): Likewise. * corelow.c (get_core_registers): Likewise. * i386-linux-nat.c (supply_gregset, fill_gregset) (i386_linux_fetch_inferior_registers) (i386_linux_store_inferior_registers): Likewise. * remote.c (init_remote_state,packet_reg_from_regnum) (packet_reg_from_pnum,process_g_packet,remote_fetch_registers) (remote_prepare_to_store,store_registers_using_G) (remote_store_registers,remote_arch_state): Likewise. * tracepoint.c (encode_actions): Likewise. * mi/mi-main.c (mi_cmd_data_list_register_names) (mi_cmd_data_list_changed_registers,mi_cmd_data_list_register_values) (mi_cmd_data_write_register_values): Likewise. * tui/tui-regs.c (tui_show_register_group) (tui_show_register_group): Likewise. * xtensa-tdep.h (FP_ALIAS): Likewise. * xtensa-tdep.c (xtensa_register_name,xtensa_register_type) (xtensa_reg_to_regnum,xtensa_pseudo_register_read) (xtensa_pseudo_register_write,xtensa_register_reggroup_p): Likewise. * win32-nat.c (do_win32_fetch_inferior_registers) (do_win32_store_inferior_registers,fetch_elf_core_registers * user-regs.h: Likewise (comment). * user-regs.c (user_reg, user_reg_map_name_to_regnum): Likewise. * trad-frame.c (trad_frame_alloc_saved_regs): Likewise. * target-descriptions.h: Likewise (comment). * target-descriptions.c (tdesc_use_registers): Likewise (comment). * target.c (debug_print_register): Likewise. * stack.c (frame_info): Likewise. * stabsread.c (define_symbol): Likewise. * sh64-tdep.c (sh64_do_pseudo_register,sh64_print_register) (sh64_media_print_registers_info) (sh64_compact_print_registers_info): Likewise. * rs6000-tdep.c (rs6000_register_sim_regno): Likewise. * rs6000-nat.c (fetch_register,store_register): Likewise. * remote-sim.c (one2one_register_sim_regno,gdbsim_fetch_register) (gdbsim_fetch_register,gdbsim_store_register): Likewise. * remote-mips.c (mips_fetch_registers,mips_store_registers): Likewise. * remote-m32r-sdi.c (m32r_fetch_registers) (m32r_store_registers): Likewise. * reggroups.c (default_register_reggroup_p): Likewise. * regcache.c (init_regcache_descr,register_size,regcache,regcache_save) (regcache_restore,regcache_dump): Likewise. * monitor.c (monitor_fetch_registers,monitor_store_registers): Likewise. * mips-tdep.c (mips_xfer_register,mips_register_name) (mips_register_reggroup_p,mips_pseudo_register_read) (mips_pseudo_register_write,mips_convert_register_p,mips_register_type) (mips_unwind_pc,mips_unwind_sp,mips_unwind_dummy_id,set_reg_offset) (mips16_scan_prologue,mips_insn16_frame_cache,reset_saved_regs) (mips32_scan_prologue,mips_insn32_frame_cache,read_next_frame_reg) (mips_n32n64_return_value,mips_o32_return_value,mips_o64_return_value) (print_gp_register_row,mips_print_registers_info) (mips_stab_reg_to_regnum,mips_dwarf_dwarf2_ecoff_reg_to_regnum) (mips_register_sim_regno): Likewise. * mips-linux-tdep.c (mips_linux_o32_sigframe_init) (mips_linux_n32n64_sigframe_init): Likewise. * mips-linux-nat.c (mips_linux_register_addr) (mips64_linux_register_addr): Likewise. * findvar.c (value_of_register): Likewise. * infcmd.c (default_print_registers_info,registers_info) (print_vector_info,print_float_info): Likewise. * mips64obsd-tdep.c (mips64obsd_sigframe_init): Likewise. * inf-child.c (inf_child_fetch_inferior_registers): Likewise. * m68k-tdep.c (m68k_dwarf_reg_to_regnum): Likewise. * m68hc11-tdep.c (m68hc11_frame_unwind_cache(: Likewise. * m32r-tdep.c (m32r_frame_unwind_cache): Likewise. * ia64-linux-nat.c (ia64_register_addr,ia64_cannot_fetch_register) (ia64_cannot_store_register,ia64_linux_fetch_registers) (ia64_linux_store_registers): Likewise. * hpux-thread.c (hpux_thread_fetch_registers) (hpux_thread_store_registers): Likewise. * h8300-tdep.c (E_PSEUDO_CCR_REGNUM,E_PSEUDO_EXR_REGNUM) (h8300_init_frame_cache,h8300_frame_cache,h8300_frame_prev_register) (h8300_register_type): Likewise. * dwarf2-frame.c (dwarf2_frame_cache) (dwarf2_frame_state_alloc_regs): Likewise. * cris-tdep.c (cris_register_size,cris_cannot_fetch_register) (cris_cannot_store_register,crisv32_cannot_fetch_register) (crisv32_cannot_store_register,cris_register_name): Likewise. * avr-tdep.c (avr_frame_unwind_cache): Likewise. * arch-utils.c (legacy_register_sim_regno) (legacy_virtual_frame_pointer): Likewise. * arm-tdep.c (arm_make_prologue_cache,arm_register_sim_regno):Likewise. * arm-tdep.h: Likewise (comment). * frv-tdep.c (frv_register_sim_regno): Likewise. * m68klinux-nat.c (old_fetch_inferior_registers) (old_store_inferior_registers): Likewise. * m32c-tdep.c (m32c_virtual_frame_pointer): Likewise. * irix5-nat.c (fetch_core_registers): Likewise. * hppa-tdep.c (hppa_frame_cache): Likewise. * hppa-linux-nat.c (hppa_linux_register_addr) (hppa_linux_fetch_inferior_registers) (hppa_linux_store_inferior_registers): Likewise. * hppa-hpux-nat.c (hppa_hpux_fetch_inferior_registers) (hppa_hpux_store_inferior_registers): Likewise. * amd64-nat.c (amd64_native_gregset_reg_offset) (amd64_supply_native_gregset,amd64_collect_native_gregset): Likewise. * dbug-rom.c (dbug_regname): Likewise. * m68hc11-tdep.c (m68hc11_frame_unwind_cache) (HARD_PAGE_REGNUM (comment)): Likewise. * gdbarch.sh (NUM_PSEUDO_REGS): Replace by gdbarch_num_pseudo_regs. * i386-tdep.c (i386_dbx_reg_to_regnum) (i386_svr4_reg_to_regnum): Likewise. * mi/mi-main.c (mi_cmd_data_list_register_names) (mi_cmd_data_list_changed_registers,mi_cmd_data_list_register_values) (mi_cmd_data_write_register_values): Likewise. * gdbarch.c, gdbarch.h: Regenerate. * tui/tui-regs.c (tui_show_register_group): Likewise. * xtensa-tdep.h (FP_ALIAS): Likewise. * user-regs.h: Likewise (comment). * user-regs.c (user_reg, user_reg_map_name_to_regnum): Likewise. * trad-frame.c (trad_frame_alloc_saved_regs): Likewise. * target-descriptions.h: Likewise (comment). * target.c (debug_print_register): Likewise. * stack.c (frame_info): Likewise. * stabsread.c (define_symbol): Likewise. * sh64-tdep.c (sh64_print_register,sh64_media_print_registers_info) (sh64_compact_print_registers_info): Likewise. * rs6000-tdep.c (rs6000_register_sim_regno): Likewise. * regcache.c (init_regcache_descr,register_size,regcache,regcache_save (regcache_restore,regcache_dump): Likewise. * mips-tdep.c (print_gp_register_row,mips_print_registers_info) (mips_dwarf_dwarf2_ecoff_reg_to_regnum) (mips_stab_reg_to_regnum): Likewise. * findvar.c (value_of_register): Likewise. * infcmd.c (default_print_registers_info,registers_info) (print_vector_info,print_float_info): Likewise. * m68k-tdep.c (m68k_dwarf_reg_to_regnum): Likewise. * h8300-tdep.c (h8300_register_type): Likewise. * dwarf2-frame.c (dwarf2_frame_cache): Likewise. * frame.h (SIZEOF_FRAME_SAVED_REGS): Likewise. * xtensa-tdep.c (xtensa_register_type,xtensa_reg_to_regnum) (xtensa_pseudo_register_read,xtensa_pseudo_register_write): Likewise. * parse.c: Remove comment. * gdbarch.c, gdbarch.h: Regenerate
2007-05-31 17:32:22 +00:00
#include "inferior.h"
2001-08-01 18:39:27 +00:00
#include "doublest.h"
#include "gdb_assert.h"
2003-02-19 David Carlton <carlton@math.stanford.edu> * Makefile.in (SFILES): Add block.c. (block_h): New. (COMMON_OBS): Add block.o. (block.o): New. (x86-64-tdep.o): Add $(block_h). (values.o, valops.o, tracepoint.o, symtab.o, symmisc.o, symfile.o) (stack.o, printcmd.o, p-exp.tab.o, parse.o, objfiles.o) (objc-exp.tab.o, objc-lang.o, nlmread.o, mips-tdep.o, mdebugread.o) (m2-exp.tab.o, linespec.o, jv-lang.o, jv-exp.tab.o, infcmd.o) (f-valprint.o, findvar.o, f-exp.tab.o, expprint.o, coffread.o) (c-exp.tab.o, buildsym.o, breakpoint.o, blockframe.o, ax-gdb.o) (alpha-tdep.o, ada-lang.o, ada-exp.tab.o, mi-cmd-stack.o): Ditto. * value.h: Add opaque declaration for struct block. * parser-defs.h, objc-lang.h, buildsym.h, breakpoint.h: Ditto. * ada-lang.h: Ditto. * x86-64-tdep.c: #include "block.h" * values.c, valops.c, tracepoint.c, symtab.c, symmisc.c: Ditto. * symfile.c, stack.c, printcmd.c, p-exp.y, parse.c: Ditto. * objfiles.c, objc-exp.y, objc-lang.c, nlmread.c: Ditto. * mips-tdep.c, mdebugread.c, m2-exp.y, linespec.c: Ditto. * jv-lang.c, jv-exp.y, infcmd.c, f-valprint.c: Ditto. * findvar.c, f-exp.y, expprint.c, coffread.c, c-exp.y: Ditto. * buildsym.c, breakpoint.c, blockframe.c, ax-gdb.c: Ditto. * alpha-tdep.c, ada-lang.c, ada-exp.y: Ditto. * blockframe.c (blockvector_for_pc_sect): Move to "block.c". (blockvector_for_pc, block_for_pc_sect, block_for_pc): Ditto. * symtab.c (block_function): Ditto. (contained_in): Ditto. * frame.h: Move block_for_pc and block_for_pc_sect declarations to block.h. Add opaque declaration for struct block. * symtab.h: Move block_function and contained_in declarations to block.h. Add opaque declarations for struct block, struct blockvector. (struct block): Move to block.h. (struct blockvector): Ditto. (BLOCK_START, BLOCK_END, BLOCK_FUNCTION, BLOCK_SUPERBLOCK) (BLOCK_GCC_COMPILED, BLOCK_HASHTABLE, BLOCK_NSYMS, BLOCK_SYM) (BLOCK_BUCKETS, BLOCK_BUCKET, BLOCK_HASHTABLE_SIZE) (ALL_BLOCK_SYMBOLS, BLOCK_SHOULD_SORT, BLOCKVECTOR_NBLOCKS) (BLOCKVECTOR_BLOCK, GLOBAL_BLOCK, STATIC_BLOCK, FIRST_LOCAL_BLOCK): Ditto. * block.c: New file. * block.h: New file. 2003-02-19 David Carlton <carlton@math.stanford.edu> * mi-cmd-stack.c: #include "block.h"
2003-02-20 00:01:07 +00:00
#include "block.h"
#include "source.h"
#include "objfiles.h"
#include "exceptions.h"
#include "user-regs.h"
* parser-defs.h (struct exp_descriptor): New definition, containing language-specific info for printing, prefixifying, dumping, and evaluating expressions. (exp_descriptor_standard): Declare new variable. (print_subexp): Make global and declare here (from expprint.c). (dump_subexp): Ditto. (dump_subexp_body_standard): Declare. (operator_length_standard): Declare. (op_name_standard): Declare. (print_subexp): Declare. (print_subexp_standard): Declare. * language.h (struct language_defn): Add la_exp_desc field to hold pointer to table for language-specific operators. Remove evaluate_exp field, which is now in struct exp_descriptor. * parse.c (operator_length): Move most code to new operator_length_standard function. Use language-specific information. (operator_length_standard): New function taking most code from operator_length. (exp_descriptor_standard): New constant. * expression.h (enum exp_opcode): Add definitions of OP_EXTENDED0 and OP_EXTENDED_LAST. * expprint.c (print_subexp): Use language-specific print_subexp. Make global; remove static declaration. Move most code to print_subexp_standard. (print_subexp_standard): New function, containing code formerly in print_subexp. (op_name): Add expression to argument signature. Use langauge-specific op_name. Move most code to op_name_standard. (op_name_standard): New function, containing code formerly in op_name. (dump_subexp): Use new version of op_name function. Use language-specific dump_subexp_body, and move most existing code to dump_subexp_body_standard. (dump_raw_expression): Use new op_name interface. (dump_subexp_body): Move most code to dump_subexp_body_standard. (dump_subexp_body_standard): New function, containing code formerly in dump_subexp_body. * language.c (unknown_language): Add default la_exp_desc field and remove evaluate_exp field. (auto_language): Ditto. (local_language): Ditto. * f-lang.c (f_language_defn): Ditto. * c-lang.c (c_language_defn): Ditto. (cplus_language_defn): Ditto. (asm_language_defn): Ditto. (minimal_language_defn): Ditto. * p-lang.c (pascal_language_defn): Ditto. * m2-lang.c (m2_language_defn): Ditto. * objc-lang.c (objc_language_defn): Ditto. * jv-lang.c (exp_descriptor_java): New variable, containing Java-specific expression evaluator. (java_language_defn): Add la_exp_desc field and remove evaluate_exp field. * scm-lang.c (exp_descriptor_scm): New variable, containing Scheme-specific expression evaluator. (scm_language_defn): Add la_exp_desc field and remove evaluate_exp field. * objc-lang.c (print_object_command): Take evaluate_exp from the la_exp_desc field. * Makefile.in (eval.o): Add dependency on parser-defs.h. * eval.c: Include parser-defs.h for the full declaration of la_exp_desc's type. (evaluate_subexp): Get evaluate_exp out of la_exp_desc field.
2003-09-25 08:40:45 +00:00
/* Standard set of definitions for printing, dumping, prefixifying,
* and evaluating expressions. */
const struct exp_descriptor exp_descriptor_standard =
{
print_subexp_standard,
operator_length_standard,
op_name_standard,
dump_subexp_body_standard,
evaluate_subexp_standard
};
/* Global variables declared in parser-defs.h (and commented there). */
struct expression *expout;
int expout_size;
int expout_ptr;
struct block *expression_context_block;
CORE_ADDR expression_context_pc;
struct block *innermost_block;
int arglist_len;
union type_stack_elt *type_stack;
int type_stack_depth, type_stack_size;
char *lexptr;
char *prev_lexptr;
int paren_depth;
int comma_terminates;
/* True if parsing an expression to find a field reference. This is
only used by completion. */
int in_parse_field;
/* The index of the last struct expression directly before a '.' or
'->'. This is set when parsing and is only used when completing a
field name. It is -1 if no dereference operation was found. */
static int expout_last_struct = -1;
/* A temporary buffer for identifiers, so we can null-terminate them.
We allocate this with xrealloc. parse_exp_1 used to allocate with
alloca, using the size of the whole expression as a conservative
estimate of the space needed. However, macro expansion can
introduce names longer than the original expression; there's no
practical way to know beforehand how large that might be. */
char *namecopy;
size_t namecopy_size;
static int expressiondebug = 0;
2005-02-24 Andrew Cagney <cagney@gnu.org> Add show_VARIABLE functions, update add_setshow call. * varobj.c (_initialize_varobj, show_varobjdebug): Add and update. * valprint.c (_initialize_valprint, show_print_max) (show_stop_print_at_null, show_repeat_count_threshold) (show_prettyprint_structs, show_unionprint) (show_prettyprint_arrays, show_addressprint, show_input_radix) (show_output_radix): Ditto. * valops.c (_initialize_valops, show_overload_resolution): Ditto. * utils.c (initialize_utils, show_chars_per_line) (show_lines_per_page, show_demangle, show_pagination_enabled) (show_sevenbit_strings, show_asm_demangle): Ditto * tui/tui-win.c (_initialize_tui_win, show_tui_border_kind) (show_tui_border_mode, show_tui_active_border_mode): Ditto. * top.c (init_main, show_new_async_prompt) (show_async_command_editing_p, show_write_history_p) (show_history_size, show_history_filename, show_caution) (show_annotation_level, init_main): Ditto. * target.c (initialize_targets, show_targetdebug) (show_trust_readonly): Ditto. * symfile.c (_initialize_symfile, show_symbol_reloading) (show_ext_args, show_download_write_size) (show_debug_file_directory): Ditto. * source.c (_initialize_source, show_lines_to_list): Ditto. * solib.c (_initialize_solib, show_auto_solib_add) (show_solib_search_path): Ditto. * p-valprint.c (_initialize_pascal_valprint) (show_pascal_static_field_print): Ditto. * printcmd.c (_initialize_printcmd, show_max_symbolic_offset) (show_print_symbol_filename): Add and update. * parse.c (_initialize_parse, show_expressiondebug): Dito. * observer.c (_initialize_observer, show_observer_debug): Dito. * maint.c (_initialize_maint_cmds, show_watchdog) (show_maintenance_profile_p): Dito. * linux-nat.c (_initialize_linux_nat, show_debug_linux_nat): Dito. * infrun.c (_initialize_infrun, show_debug_infrun) (show_stop_on_solib_events, show_follow_fork_mode_string) (show_scheduler_mode, show_step_stop_if_no_debug): Ditto. * infcall.c (_initialize_infcall, show_coerce_float_to_double_p) (show_unwind_on_signal_p): Ditto. * gdbtypes.c (build_gdbtypes, show_opaque_type_resolution) (_initialize_gdbtypes, show_overload_debug): Ditto. * gdb-events.c, gdb-events.sh (_initialize_gdb_events) (show_gdb_events_debug): Ditto. * gdbarch.c, gdbarch.sh (show_gdbarch_debug) (_initialize_gdbarch): Ditto. * frame.c (_initialize_frame, show_backtrace_past_main) (show_backtrace_past_entry, show_backtrace_limit) (show_frame_debug): Ditto. * exec.c (_initialize_exec, show_write_files): Ditto. * dwarf2read.c (_initialize_dwarf2_read) (show_dwarf2_max_cache_age): Ditto. * demangle.c (_initialize_demangler) (show_demangling_style_names): Ditto. * dcache.c (_initialize_dcache, show_dcache_enabled_p): Ditto. * cp-valprint.c (show_static_field_print) (_initialize_cp_valprint, show_vtblprint, show_objectprint): Ditto. * corefile.c (_initialize_core, show_gnutarget_string): Ditto. * cli/cli-logging.c (_initialize_cli_logging) (show_logging_overwrite, show_logging_redirect) (show_logging_filename): Ditto. * cli/cli-cmds.c (show_info_verbose, show_history_expansion_p) (init_cli_cmds, show_baud_rate, show_remote_debug) (show_remote_timeout, show_max_user_call_depth): Ditto. * charset.c (show_host_charset_name, show_target_charset_name) (initialize_charset): Ditto. * breakpoint.c (show_can_use_hw_watchpoints) (show_pending_break_support, _initialize_breakpoint): Ditto.
2005-02-24 13:51:36 +00:00
static void
show_expressiondebug (struct ui_file *file, int from_tty,
struct cmd_list_element *c, const char *value)
{
fprintf_filtered (file, _("Expression debugging is %s.\n"), value);
}
2000-05-22 09:02:23 +00:00
static void free_funcalls (void *ignore);
static int prefixify_expression (struct expression *);
static int prefixify_subexp (struct expression *, struct expression *, int,
int);
static struct expression *parse_exp_in_context (char **, struct block *, int,
int, int *);
2000-05-28 01:12:42 +00:00
void _initialize_parse (void);
1999-05-25 18:09:09 +00:00
/* Data structure for saving values of arglist_len for function calls whose
arguments contain other function calls. */
struct funcall
{
struct funcall *next;
int arglist_len;
};
static struct funcall *funcall_chain;
/* Begin counting arguments for a function call,
saving the data about any containing call. */
void
2000-07-30 01:48:28 +00:00
start_arglist (void)
{
struct funcall *new;
new = (struct funcall *) xmalloc (sizeof (struct funcall));
new->next = funcall_chain;
new->arglist_len = arglist_len;
arglist_len = 0;
funcall_chain = new;
}
/* Return the number of arguments in a function call just terminated,
and restore the data for the containing function call. */
int
2000-07-30 01:48:28 +00:00
end_arglist (void)
{
int val = arglist_len;
struct funcall *call = funcall_chain;
funcall_chain = call->next;
arglist_len = call->arglist_len;
2000-12-15 01:01:51 +00:00
xfree (call);
return val;
}
/* Free everything in the funcall chain.
Used when there is an error inside parsing. */
static void
2000-05-22 09:02:23 +00:00
free_funcalls (void *ignore)
{
struct funcall *call, *next;
for (call = funcall_chain; call; call = next)
{
next = call->next;
2000-12-15 01:01:51 +00:00
xfree (call);
}
}
/* This page contains the functions for adding data to the struct expression
being constructed. */
/* Add one element to the end of the expression. */
/* To avoid a bug in the Sun 4 compiler, we pass things that can fit into
a register through here */
void
2000-07-30 01:48:28 +00:00
write_exp_elt (union exp_element expelt)
{
if (expout_ptr >= expout_size)
{
expout_size *= 2;
expout = (struct expression *)
xrealloc ((char *) expout, sizeof (struct expression)
+ EXP_ELEM_TO_BYTES (expout_size));
}
expout->elts[expout_ptr++] = expelt;
}
void
2000-07-30 01:48:28 +00:00
write_exp_elt_opcode (enum exp_opcode expelt)
{
union exp_element tmp;
memset (&tmp, 0, sizeof (union exp_element));
tmp.opcode = expelt;
write_exp_elt (tmp);
}
void
2000-07-30 01:48:28 +00:00
write_exp_elt_sym (struct symbol *expelt)
{
union exp_element tmp;
memset (&tmp, 0, sizeof (union exp_element));
tmp.symbol = expelt;
write_exp_elt (tmp);
}
void
2000-07-30 01:48:28 +00:00
write_exp_elt_block (struct block *b)
{
union exp_element tmp;
memset (&tmp, 0, sizeof (union exp_element));
tmp.block = b;
write_exp_elt (tmp);
}
void
write_exp_elt_objfile (struct objfile *objfile)
{
union exp_element tmp;
memset (&tmp, 0, sizeof (union exp_element));
tmp.objfile = objfile;
write_exp_elt (tmp);
}
void
2000-07-30 01:48:28 +00:00
write_exp_elt_longcst (LONGEST expelt)
{
union exp_element tmp;
memset (&tmp, 0, sizeof (union exp_element));
tmp.longconst = expelt;
write_exp_elt (tmp);
}
void
2000-07-30 01:48:28 +00:00
write_exp_elt_dblcst (DOUBLEST expelt)
{
union exp_element tmp;
memset (&tmp, 0, sizeof (union exp_element));
tmp.doubleconst = expelt;
write_exp_elt (tmp);
}
void
write_exp_elt_decfloatcst (gdb_byte expelt[16])
{
union exp_element tmp;
int index;
for (index = 0; index < 16; index++)
tmp.decfloatconst[index] = expelt[index];
write_exp_elt (tmp);
}
void
2000-07-30 01:48:28 +00:00
write_exp_elt_type (struct type *expelt)
{
union exp_element tmp;
memset (&tmp, 0, sizeof (union exp_element));
tmp.type = expelt;
write_exp_elt (tmp);
}
void
2000-07-30 01:48:28 +00:00
write_exp_elt_intern (struct internalvar *expelt)
{
union exp_element tmp;
memset (&tmp, 0, sizeof (union exp_element));
tmp.internalvar = expelt;
write_exp_elt (tmp);
}
/* Add a string constant to the end of the expression.
String constants are stored by first writing an expression element
that contains the length of the string, then stuffing the string
constant itself into however many expression elements are needed
to hold it, and then writing another expression element that contains
the length of the string. I.E. an expression element at each end of
the string records the string length, so you can skip over the
expression elements containing the actual string bytes from either
end of the string. Note that this also allows gdb to handle
strings with embedded null bytes, as is required for some languages.
Don't be fooled by the fact that the string is null byte terminated,
this is strictly for the convenience of debugging gdb itself. Gdb
Gdb does not depend up the string being null terminated, since the
actual length is recorded in expression elements at each end of the
string. The null byte is taken into consideration when computing how
many expression elements are required to hold the string constant, of
course. */
void
2000-07-30 01:48:28 +00:00
write_exp_string (struct stoken str)
{
int len = str.length;
int lenelt;
char *strdata;
/* Compute the number of expression elements required to hold the string
(including a null byte terminator), along with one expression element
at each end to record the actual string length (not including the
null byte terminator). */
lenelt = 2 + BYTES_TO_EXP_ELEM (len + 1);
/* Ensure that we have enough available expression elements to store
everything. */
if ((expout_ptr + lenelt) >= expout_size)
{
expout_size = max (expout_size * 2, expout_ptr + lenelt + 10);
expout = (struct expression *)
xrealloc ((char *) expout, (sizeof (struct expression)
+ EXP_ELEM_TO_BYTES (expout_size)));
}
/* Write the leading length expression element (which advances the current
expression element index), then write the string constant followed by a
terminating null byte, and then write the trailing length expression
element. */
write_exp_elt_longcst ((LONGEST) len);
strdata = (char *) &expout->elts[expout_ptr];
memcpy (strdata, str.ptr, len);
*(strdata + len) = '\0';
expout_ptr += lenelt - 2;
write_exp_elt_longcst ((LONGEST) len);
}
/* Add a bitstring constant to the end of the expression.
Bitstring constants are stored by first writing an expression element
that contains the length of the bitstring (in bits), then stuffing the
bitstring constant itself into however many expression elements are
needed to hold it, and then writing another expression element that
contains the length of the bitstring. I.E. an expression element at
each end of the bitstring records the bitstring length, so you can skip
over the expression elements containing the actual bitstring bytes from
either end of the bitstring. */
void
2000-07-30 01:48:28 +00:00
write_exp_bitstring (struct stoken str)
{
int bits = str.length; /* length in bits */
int len = (bits + HOST_CHAR_BIT - 1) / HOST_CHAR_BIT;
int lenelt;
char *strdata;
/* Compute the number of expression elements required to hold the bitstring,
along with one expression element at each end to record the actual
bitstring length in bits. */
lenelt = 2 + BYTES_TO_EXP_ELEM (len);
/* Ensure that we have enough available expression elements to store
everything. */
if ((expout_ptr + lenelt) >= expout_size)
{
expout_size = max (expout_size * 2, expout_ptr + lenelt + 10);
expout = (struct expression *)
xrealloc ((char *) expout, (sizeof (struct expression)
+ EXP_ELEM_TO_BYTES (expout_size)));
}
/* Write the leading length expression element (which advances the current
expression element index), then write the bitstring constant, and then
write the trailing length expression element. */
write_exp_elt_longcst ((LONGEST) bits);
strdata = (char *) &expout->elts[expout_ptr];
memcpy (strdata, str.ptr, len);
expout_ptr += lenelt - 2;
write_exp_elt_longcst ((LONGEST) bits);
}
/* Add the appropriate elements for a minimal symbol to the end of
the expression. */
void
write_exp_msymbol (struct minimal_symbol *msymbol)
{
struct objfile *objfile = msymbol_objfile (msymbol);
struct gdbarch *gdbarch = get_objfile_arch (objfile);
CORE_ADDR addr = SYMBOL_VALUE_ADDRESS (msymbol);
* breakpoint.h (struct bp_location): Change type of section member to "struct obj_section *". * tracepoint.h (struct tracepoint): Likewise. * symtab.h (struct general_symbol_info): Replace bfd_section member with obj_section. (struct symtab_and_line): Change type of section member to "struct obj_section *". (SYMBOL_BFD_SECTION): Remove macro, replace by ... (SYMBOL_OBJ_SECTION): ... this. * minsym.c (prim_record_minimal_symbol_and_info): Record symbol section as obj_section instead of bfd_section. * ada-lang.c (ada_decode_symbol): Use gsymbol->obj_section directly instead of looking of obj_section from bfd_section. * objfiles.h (find_pc_sect_section): Remove. * objfiles.c (find_pc_sect_section): Remove. (find_pc_section): Inline find_pc_sect_section code. * symfile.h (find_pc_overlay): Return struct obj_section *. (find_pc_mapped_section): Likewise. (section_is_overlay, section_is_mapped): Change type of section argument to struct obj_section *. (pc_in_mapped_range, pc_in_unmapped_range): Likewise. (overlay_mapped_address, overlay_unmapped_address): Likewise. (symbol_overlayed_address): Likewise. * symtab.h (symbol_overlayed_address): Likewise. * symfile.c (overlay_is_mapped): Remove. (section_is_mapped): Inline overlay_is_mapped code. Update. (overlay_invalidate_all): Update. (section_is_overlay): Change section argument to type "struct obj_section *". Use bfd_ methods. (pc_in_unmapped_range): Likewise. Handle relocated sections. (pc_in_mapped_range): Likewise. Handle relocated sections. (sections_overlap): Likewise. (overlay_unmapped_address): Likewise. (overlay_mapped_address): Likewise. (symbol_overlayed_address): Likewise. (find_pc_overlay): Return struct obj_section *. (find_pc_mapped_section): Likewise. (list_overlays_command): Update. (map_overlay_command, unmap_overlay_command): Update. (simple_overlay_update): Update. * block.h (blockvector_for_pc_sect): Change section argument to type "struct obj_section *". (block_for_pc_sect): Likewise. * block.c (blockvector_for_pc_sect): Change section argument to type "struct obj_section *". (block_for_pc_sect): Likewise. * symtab.h (find_pc_sect_function, find_pc_sect_psymtab, find_pc_sect_symtab, find_pc_sect_psymbol, find_pc_sect_line, lookup_minimal_symbol_by_pc_section, find_function_start_pc): Likewise. (matching_bfd_sections): Rename to ... (matching_obj_sections): ... this. Update argument types. * blockframe.c (find_pc_sect_function): Likewise. * breakpoint.c (describe_other_breakpoints): Likewise. (breakpoint_has_pc, check_duplicates_for): Likewise. * minsyms.c (lookup_minimal_symbol_by_pc_section_1): Likewise. (lookup_minimal_symbol_by_pc_section): Likewise. * symtab.c (find_pc_sect_psymtab_closer): Likewise. (find_pc_sect_psymtab, find_pc_sect_psymbol, find_pc_sect_symtab, find_pc_sect_line, find_function_start_pc): Likewise. (matching_bfd_sections): Rename to ... (matching_obj_sections): ... this. Update argument types. * blockframe.c (find_pc_partial_function): Update to section type changes. No longer call find_pc_sect_section. (cache_pc_function_section): Change to type "struct obj_section *". * breakpoint.c (resolve_sal_pc): Update to section type changes. * exec.c (xfer_memory): Likewise. * findvar.c (read_var_value): Likewise. * infcmd.c (jump_command): Likewise. * linespec.c (minsym_found): Likewise. * maint.c (maintenance_translate_address): Likewise. * minsyms.c (lookup_minimal_symbol_by_pc_section_1): Likewise. (lookup_solib_trampoline_symbol_by_pc): Likewise. * parse.c (write_exp_msymbol): Likewise. * printcmd.c (build_address_symbolic): Likewise. (address_info, sym_info): Likewise. * symmisc.c (dump_msymbols, print_symbol): Likewise. * symtab.c (fixup_section): Likewise. (fixup_symbol_section, fixup_psymbol_section): Likewise. (find_pc_line, find_function_start_sal): Likewise. * target.c (memory_xfer_partial): Likewise. * hppa-hpux-tdep.c (hppa64_hpux_in_solib_call_trampoline): Likewise. * spu-tdep.c (spu_overlay_update): Likewise.
2008-09-05 11:37:18 +00:00
struct obj_section *section = SYMBOL_OBJ_SECTION (msymbol);
enum minimal_symbol_type type = MSYMBOL_TYPE (msymbol);
CORE_ADDR pc;
/* The minimal symbol might point to a function descriptor;
resolve it to the actual code address instead. */
pc = gdbarch_convert_from_func_ptr_addr (gdbarch, addr, &current_target);
if (pc != addr)
{
/* In this case, assume we have a code symbol instead of
a data symbol. */
type = mst_text;
* breakpoint.h (struct bp_location): Change type of section member to "struct obj_section *". * tracepoint.h (struct tracepoint): Likewise. * symtab.h (struct general_symbol_info): Replace bfd_section member with obj_section. (struct symtab_and_line): Change type of section member to "struct obj_section *". (SYMBOL_BFD_SECTION): Remove macro, replace by ... (SYMBOL_OBJ_SECTION): ... this. * minsym.c (prim_record_minimal_symbol_and_info): Record symbol section as obj_section instead of bfd_section. * ada-lang.c (ada_decode_symbol): Use gsymbol->obj_section directly instead of looking of obj_section from bfd_section. * objfiles.h (find_pc_sect_section): Remove. * objfiles.c (find_pc_sect_section): Remove. (find_pc_section): Inline find_pc_sect_section code. * symfile.h (find_pc_overlay): Return struct obj_section *. (find_pc_mapped_section): Likewise. (section_is_overlay, section_is_mapped): Change type of section argument to struct obj_section *. (pc_in_mapped_range, pc_in_unmapped_range): Likewise. (overlay_mapped_address, overlay_unmapped_address): Likewise. (symbol_overlayed_address): Likewise. * symtab.h (symbol_overlayed_address): Likewise. * symfile.c (overlay_is_mapped): Remove. (section_is_mapped): Inline overlay_is_mapped code. Update. (overlay_invalidate_all): Update. (section_is_overlay): Change section argument to type "struct obj_section *". Use bfd_ methods. (pc_in_unmapped_range): Likewise. Handle relocated sections. (pc_in_mapped_range): Likewise. Handle relocated sections. (sections_overlap): Likewise. (overlay_unmapped_address): Likewise. (overlay_mapped_address): Likewise. (symbol_overlayed_address): Likewise. (find_pc_overlay): Return struct obj_section *. (find_pc_mapped_section): Likewise. (list_overlays_command): Update. (map_overlay_command, unmap_overlay_command): Update. (simple_overlay_update): Update. * block.h (blockvector_for_pc_sect): Change section argument to type "struct obj_section *". (block_for_pc_sect): Likewise. * block.c (blockvector_for_pc_sect): Change section argument to type "struct obj_section *". (block_for_pc_sect): Likewise. * symtab.h (find_pc_sect_function, find_pc_sect_psymtab, find_pc_sect_symtab, find_pc_sect_psymbol, find_pc_sect_line, lookup_minimal_symbol_by_pc_section, find_function_start_pc): Likewise. (matching_bfd_sections): Rename to ... (matching_obj_sections): ... this. Update argument types. * blockframe.c (find_pc_sect_function): Likewise. * breakpoint.c (describe_other_breakpoints): Likewise. (breakpoint_has_pc, check_duplicates_for): Likewise. * minsyms.c (lookup_minimal_symbol_by_pc_section_1): Likewise. (lookup_minimal_symbol_by_pc_section): Likewise. * symtab.c (find_pc_sect_psymtab_closer): Likewise. (find_pc_sect_psymtab, find_pc_sect_psymbol, find_pc_sect_symtab, find_pc_sect_line, find_function_start_pc): Likewise. (matching_bfd_sections): Rename to ... (matching_obj_sections): ... this. Update argument types. * blockframe.c (find_pc_partial_function): Update to section type changes. No longer call find_pc_sect_section. (cache_pc_function_section): Change to type "struct obj_section *". * breakpoint.c (resolve_sal_pc): Update to section type changes. * exec.c (xfer_memory): Likewise. * findvar.c (read_var_value): Likewise. * infcmd.c (jump_command): Likewise. * linespec.c (minsym_found): Likewise. * maint.c (maintenance_translate_address): Likewise. * minsyms.c (lookup_minimal_symbol_by_pc_section_1): Likewise. (lookup_solib_trampoline_symbol_by_pc): Likewise. * parse.c (write_exp_msymbol): Likewise. * printcmd.c (build_address_symbolic): Likewise. (address_info, sym_info): Likewise. * symmisc.c (dump_msymbols, print_symbol): Likewise. * symtab.c (fixup_section): Likewise. (fixup_symbol_section, fixup_psymbol_section): Likewise. (find_pc_line, find_function_start_sal): Likewise. * target.c (memory_xfer_partial): Likewise. * hppa-hpux-tdep.c (hppa64_hpux_in_solib_call_trampoline): Likewise. * spu-tdep.c (spu_overlay_update): Likewise.
2008-09-05 11:37:18 +00:00
section = NULL;
addr = pc;
}
if (overlay_debugging)
* breakpoint.h (struct bp_location): Change type of section member to "struct obj_section *". * tracepoint.h (struct tracepoint): Likewise. * symtab.h (struct general_symbol_info): Replace bfd_section member with obj_section. (struct symtab_and_line): Change type of section member to "struct obj_section *". (SYMBOL_BFD_SECTION): Remove macro, replace by ... (SYMBOL_OBJ_SECTION): ... this. * minsym.c (prim_record_minimal_symbol_and_info): Record symbol section as obj_section instead of bfd_section. * ada-lang.c (ada_decode_symbol): Use gsymbol->obj_section directly instead of looking of obj_section from bfd_section. * objfiles.h (find_pc_sect_section): Remove. * objfiles.c (find_pc_sect_section): Remove. (find_pc_section): Inline find_pc_sect_section code. * symfile.h (find_pc_overlay): Return struct obj_section *. (find_pc_mapped_section): Likewise. (section_is_overlay, section_is_mapped): Change type of section argument to struct obj_section *. (pc_in_mapped_range, pc_in_unmapped_range): Likewise. (overlay_mapped_address, overlay_unmapped_address): Likewise. (symbol_overlayed_address): Likewise. * symtab.h (symbol_overlayed_address): Likewise. * symfile.c (overlay_is_mapped): Remove. (section_is_mapped): Inline overlay_is_mapped code. Update. (overlay_invalidate_all): Update. (section_is_overlay): Change section argument to type "struct obj_section *". Use bfd_ methods. (pc_in_unmapped_range): Likewise. Handle relocated sections. (pc_in_mapped_range): Likewise. Handle relocated sections. (sections_overlap): Likewise. (overlay_unmapped_address): Likewise. (overlay_mapped_address): Likewise. (symbol_overlayed_address): Likewise. (find_pc_overlay): Return struct obj_section *. (find_pc_mapped_section): Likewise. (list_overlays_command): Update. (map_overlay_command, unmap_overlay_command): Update. (simple_overlay_update): Update. * block.h (blockvector_for_pc_sect): Change section argument to type "struct obj_section *". (block_for_pc_sect): Likewise. * block.c (blockvector_for_pc_sect): Change section argument to type "struct obj_section *". (block_for_pc_sect): Likewise. * symtab.h (find_pc_sect_function, find_pc_sect_psymtab, find_pc_sect_symtab, find_pc_sect_psymbol, find_pc_sect_line, lookup_minimal_symbol_by_pc_section, find_function_start_pc): Likewise. (matching_bfd_sections): Rename to ... (matching_obj_sections): ... this. Update argument types. * blockframe.c (find_pc_sect_function): Likewise. * breakpoint.c (describe_other_breakpoints): Likewise. (breakpoint_has_pc, check_duplicates_for): Likewise. * minsyms.c (lookup_minimal_symbol_by_pc_section_1): Likewise. (lookup_minimal_symbol_by_pc_section): Likewise. * symtab.c (find_pc_sect_psymtab_closer): Likewise. (find_pc_sect_psymtab, find_pc_sect_psymbol, find_pc_sect_symtab, find_pc_sect_line, find_function_start_pc): Likewise. (matching_bfd_sections): Rename to ... (matching_obj_sections): ... this. Update argument types. * blockframe.c (find_pc_partial_function): Update to section type changes. No longer call find_pc_sect_section. (cache_pc_function_section): Change to type "struct obj_section *". * breakpoint.c (resolve_sal_pc): Update to section type changes. * exec.c (xfer_memory): Likewise. * findvar.c (read_var_value): Likewise. * infcmd.c (jump_command): Likewise. * linespec.c (minsym_found): Likewise. * maint.c (maintenance_translate_address): Likewise. * minsyms.c (lookup_minimal_symbol_by_pc_section_1): Likewise. (lookup_solib_trampoline_symbol_by_pc): Likewise. * parse.c (write_exp_msymbol): Likewise. * printcmd.c (build_address_symbolic): Likewise. (address_info, sym_info): Likewise. * symmisc.c (dump_msymbols, print_symbol): Likewise. * symtab.c (fixup_section): Likewise. (fixup_symbol_section, fixup_psymbol_section): Likewise. (find_pc_line, find_function_start_sal): Likewise. * target.c (memory_xfer_partial): Likewise. * hppa-hpux-tdep.c (hppa64_hpux_in_solib_call_trampoline): Likewise. * spu-tdep.c (spu_overlay_update): Likewise.
2008-09-05 11:37:18 +00:00
addr = symbol_overlayed_address (addr, section);
write_exp_elt_opcode (OP_LONG);
/* Let's make the type big enough to hold a 64-bit address. */
write_exp_elt_type (builtin_type (gdbarch)->builtin_core_addr);
write_exp_elt_longcst ((LONGEST) addr);
write_exp_elt_opcode (OP_LONG);
* breakpoint.h (struct bp_location): Change type of section member to "struct obj_section *". * tracepoint.h (struct tracepoint): Likewise. * symtab.h (struct general_symbol_info): Replace bfd_section member with obj_section. (struct symtab_and_line): Change type of section member to "struct obj_section *". (SYMBOL_BFD_SECTION): Remove macro, replace by ... (SYMBOL_OBJ_SECTION): ... this. * minsym.c (prim_record_minimal_symbol_and_info): Record symbol section as obj_section instead of bfd_section. * ada-lang.c (ada_decode_symbol): Use gsymbol->obj_section directly instead of looking of obj_section from bfd_section. * objfiles.h (find_pc_sect_section): Remove. * objfiles.c (find_pc_sect_section): Remove. (find_pc_section): Inline find_pc_sect_section code. * symfile.h (find_pc_overlay): Return struct obj_section *. (find_pc_mapped_section): Likewise. (section_is_overlay, section_is_mapped): Change type of section argument to struct obj_section *. (pc_in_mapped_range, pc_in_unmapped_range): Likewise. (overlay_mapped_address, overlay_unmapped_address): Likewise. (symbol_overlayed_address): Likewise. * symtab.h (symbol_overlayed_address): Likewise. * symfile.c (overlay_is_mapped): Remove. (section_is_mapped): Inline overlay_is_mapped code. Update. (overlay_invalidate_all): Update. (section_is_overlay): Change section argument to type "struct obj_section *". Use bfd_ methods. (pc_in_unmapped_range): Likewise. Handle relocated sections. (pc_in_mapped_range): Likewise. Handle relocated sections. (sections_overlap): Likewise. (overlay_unmapped_address): Likewise. (overlay_mapped_address): Likewise. (symbol_overlayed_address): Likewise. (find_pc_overlay): Return struct obj_section *. (find_pc_mapped_section): Likewise. (list_overlays_command): Update. (map_overlay_command, unmap_overlay_command): Update. (simple_overlay_update): Update. * block.h (blockvector_for_pc_sect): Change section argument to type "struct obj_section *". (block_for_pc_sect): Likewise. * block.c (blockvector_for_pc_sect): Change section argument to type "struct obj_section *". (block_for_pc_sect): Likewise. * symtab.h (find_pc_sect_function, find_pc_sect_psymtab, find_pc_sect_symtab, find_pc_sect_psymbol, find_pc_sect_line, lookup_minimal_symbol_by_pc_section, find_function_start_pc): Likewise. (matching_bfd_sections): Rename to ... (matching_obj_sections): ... this. Update argument types. * blockframe.c (find_pc_sect_function): Likewise. * breakpoint.c (describe_other_breakpoints): Likewise. (breakpoint_has_pc, check_duplicates_for): Likewise. * minsyms.c (lookup_minimal_symbol_by_pc_section_1): Likewise. (lookup_minimal_symbol_by_pc_section): Likewise. * symtab.c (find_pc_sect_psymtab_closer): Likewise. (find_pc_sect_psymtab, find_pc_sect_psymbol, find_pc_sect_symtab, find_pc_sect_line, find_function_start_pc): Likewise. (matching_bfd_sections): Rename to ... (matching_obj_sections): ... this. Update argument types. * blockframe.c (find_pc_partial_function): Update to section type changes. No longer call find_pc_sect_section. (cache_pc_function_section): Change to type "struct obj_section *". * breakpoint.c (resolve_sal_pc): Update to section type changes. * exec.c (xfer_memory): Likewise. * findvar.c (read_var_value): Likewise. * infcmd.c (jump_command): Likewise. * linespec.c (minsym_found): Likewise. * maint.c (maintenance_translate_address): Likewise. * minsyms.c (lookup_minimal_symbol_by_pc_section_1): Likewise. (lookup_solib_trampoline_symbol_by_pc): Likewise. * parse.c (write_exp_msymbol): Likewise. * printcmd.c (build_address_symbolic): Likewise. (address_info, sym_info): Likewise. * symmisc.c (dump_msymbols, print_symbol): Likewise. * symtab.c (fixup_section): Likewise. (fixup_symbol_section, fixup_psymbol_section): Likewise. (find_pc_line, find_function_start_sal): Likewise. * target.c (memory_xfer_partial): Likewise. * hppa-hpux-tdep.c (hppa64_hpux_in_solib_call_trampoline): Likewise. * spu-tdep.c (spu_overlay_update): Likewise.
2008-09-05 11:37:18 +00:00
if (section && section->the_bfd_section->flags & SEC_THREAD_LOCAL)
{
write_exp_elt_opcode (UNOP_MEMVAL_TLS);
write_exp_elt_objfile (objfile);
write_exp_elt_type (builtin_type (gdbarch)->nodebug_tls_symbol);
write_exp_elt_opcode (UNOP_MEMVAL_TLS);
return;
}
write_exp_elt_opcode (UNOP_MEMVAL);
switch (type)
{
case mst_text:
case mst_file_text:
case mst_solib_trampoline:
write_exp_elt_type (builtin_type (gdbarch)->nodebug_text_symbol);
break;
case mst_data:
case mst_file_data:
case mst_bss:
case mst_file_bss:
write_exp_elt_type (builtin_type (gdbarch)->nodebug_data_symbol);
break;
default:
write_exp_elt_type (builtin_type (gdbarch)->nodebug_unknown_symbol);
break;
}
write_exp_elt_opcode (UNOP_MEMVAL);
}
/* Mark the current index as the starting location of a structure
expression. This is used when completing on field names. */
void
mark_struct_expression (void)
{
expout_last_struct = expout_ptr;
}
/* Recognize tokens that start with '$'. These include:
1999-07-07 20:19:36 +00:00
$regname A native register name or a "standard
register name".
1999-07-07 20:19:36 +00:00
$variable A convenience variable with a name chosen
by the user.
1999-07-07 20:19:36 +00:00
$digits Value history with index <digits>, starting
from the first value which has index 1.
1999-07-07 20:19:36 +00:00
$$digits Value history with index <digits> relative
to the last value. I.E. $$0 is the last
value, $$1 is the one previous to that, $$2
is the one previous to $$1, etc.
1999-07-07 20:19:36 +00:00
$ | $0 | $$0 The last value in the value history.
1999-07-07 20:19:36 +00:00
$$ An abbreviation for the second to the last
value in the value history, I.E. $$1
1999-07-07 20:19:36 +00:00
*/
void
2000-07-30 01:48:28 +00:00
write_dollar_variable (struct stoken str)
{
struct symbol *sym = NULL;
struct minimal_symbol *msym = NULL;
struct internalvar *isym = NULL;
/* Handle the tokens $digits; also $ (short for $0) and $$ (short for $$1)
and $$digits (equivalent to $<-digits> if you could type that). */
int negate = 0;
int i = 1;
/* Double dollar means negate the number and add -1 as well.
Thus $$ alone means -1. */
if (str.length >= 2 && str.ptr[1] == '$')
{
negate = 1;
i = 2;
}
if (i == str.length)
{
/* Just dollars (one or two) */
1999-07-07 20:19:36 +00:00
i = -negate;
goto handle_last;
}
/* Is the rest of the token digits? */
for (; i < str.length; i++)
if (!(str.ptr[i] >= '0' && str.ptr[i] <= '9'))
break;
if (i == str.length)
{
i = atoi (str.ptr + 1 + negate);
if (negate)
1999-07-07 20:19:36 +00:00
i = -i;
goto handle_last;
}
1999-07-07 20:19:36 +00:00
/* Handle tokens that refer to machine registers:
$ followed by a register name. */
i = user_reg_map_name_to_regnum (current_gdbarch,
str.ptr + 1, str.length - 1);
1999-07-07 20:19:36 +00:00
if (i >= 0)
goto handle_register;
/* Any names starting with $ are probably debugger internal variables. */
isym = lookup_only_internalvar (copy_name (str) + 1);
if (isym)
{
write_exp_elt_opcode (OP_INTERNALVAR);
write_exp_elt_intern (isym);
write_exp_elt_opcode (OP_INTERNALVAR);
return;
}
/* On some systems, such as HP-UX and hppa-linux, certain system routines
have names beginning with $ or $$. Check for those, first. */
sym = lookup_symbol (copy_name (str), (struct block *) NULL,
* 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.
2008-05-19 15:50:10 +00:00
VAR_DOMAIN, (int *) NULL);
if (sym)
{
write_exp_elt_opcode (OP_VAR_VALUE);
write_exp_elt_block (block_found); /* set by lookup_symbol */
write_exp_elt_sym (sym);
write_exp_elt_opcode (OP_VAR_VALUE);
return;
}
msym = lookup_minimal_symbol (copy_name (str), NULL, NULL);
if (msym)
{
write_exp_msymbol (msym);
return;
}
1999-07-07 20:19:36 +00:00
/* Any other names are assumed to be debugger internal variables. */
write_exp_elt_opcode (OP_INTERNALVAR);
write_exp_elt_intern (create_internalvar (copy_name (str) + 1));
1999-07-07 20:19:36 +00:00
write_exp_elt_opcode (OP_INTERNALVAR);
return;
1999-07-07 20:19:36 +00:00
handle_last:
write_exp_elt_opcode (OP_LAST);
write_exp_elt_longcst ((LONGEST) i);
write_exp_elt_opcode (OP_LAST);
return;
1999-07-07 20:19:36 +00:00
handle_register:
write_exp_elt_opcode (OP_REGISTER);
str.length--;
str.ptr++;
write_exp_string (str);
1999-07-07 20:19:36 +00:00
write_exp_elt_opcode (OP_REGISTER);
return;
}
char *
2000-07-30 01:48:28 +00:00
find_template_name_end (char *p)
{
int depth = 1;
int just_seen_right = 0;
int just_seen_colon = 0;
int just_seen_space = 0;
1999-07-07 20:19:36 +00:00
if (!p || (*p != '<'))
return 0;
while (*++p)
{
switch (*p)
1999-07-07 20:19:36 +00:00
{
case '\'':
case '\"':
case '{':
case '}':
/* In future, may want to allow these?? */
return 0;
case '<':
depth++; /* start nested template */
if (just_seen_colon || just_seen_right || just_seen_space)
return 0; /* but not after : or :: or > or space */
break;
case '>':
if (just_seen_colon || just_seen_right)
return 0; /* end a (nested?) template */
just_seen_right = 1; /* but not after : or :: */
if (--depth == 0) /* also disallow >>, insist on > > */
return ++p; /* if outermost ended, return */
break;
case ':':
if (just_seen_space || (just_seen_colon > 1))
return 0; /* nested class spec coming up */
just_seen_colon++; /* we allow :: but not :::: */
break;
case ' ':
break;
default:
if (!((*p >= 'a' && *p <= 'z') || /* allow token chars */
(*p >= 'A' && *p <= 'Z') ||
(*p >= '0' && *p <= '9') ||
(*p == '_') || (*p == ',') || /* commas for template args */
(*p == '&') || (*p == '*') || /* pointer and ref types */
(*p == '(') || (*p == ')') || /* function types */
(*p == '[') || (*p == ']'))) /* array types */
return 0;
}
if (*p != ' ')
1999-07-07 20:19:36 +00:00
just_seen_space = 0;
if (*p != ':')
1999-07-07 20:19:36 +00:00
just_seen_colon = 0;
if (*p != '>')
1999-07-07 20:19:36 +00:00
just_seen_right = 0;
}
return 0;
}
1999-07-07 20:19:36 +00:00
/* Return a null-terminated temporary copy of the name
of a string token. */
char *
2000-07-30 01:48:28 +00:00
copy_name (struct stoken token)
{
/* Make sure there's enough space for the token. */
if (namecopy_size < token.length + 1)
{
namecopy_size = token.length + 1;
namecopy = xrealloc (namecopy, token.length + 1);
}
memcpy (namecopy, token.ptr, token.length);
namecopy[token.length] = 0;
return namecopy;
}
/* Reverse an expression from suffix form (in which it is constructed)
to prefix form (in which we can conveniently print or execute it).
Ordinarily this always returns -1. However, if EXPOUT_LAST_STRUCT
is not -1 (i.e., we are trying to complete a field name), it will
return the index of the subexpression which is the left-hand-side
of the struct operation at EXPOUT_LAST_STRUCT. */
static int
prefixify_expression (struct expression *expr)
{
int len = sizeof (struct expression) + EXP_ELEM_TO_BYTES (expr->nelts);
struct expression *temp;
int inpos = expr->nelts, outpos = 0;
temp = (struct expression *) alloca (len);
/* Copy the original expression into temp. */
memcpy (temp, expr, len);
return prefixify_subexp (temp, expr, inpos, outpos);
}
/* Return the number of exp_elements in the postfix subexpression
of EXPR whose operator is at index ENDPOS - 1 in EXPR. */
int
length_of_subexp (struct expression *expr, int endpos)
{
int oplen, args, i;
operator_length (expr, endpos, &oplen, &args);
while (args > 0)
{
oplen += length_of_subexp (expr, endpos - oplen);
args--;
}
return oplen;
}
/* Sets *OPLENP to the length of the operator whose (last) index is
ENDPOS - 1 in EXPR, and sets *ARGSP to the number of arguments that
operator takes. */
void
operator_length (struct expression *expr, int endpos, int *oplenp, int *argsp)
* parser-defs.h (struct exp_descriptor): New definition, containing language-specific info for printing, prefixifying, dumping, and evaluating expressions. (exp_descriptor_standard): Declare new variable. (print_subexp): Make global and declare here (from expprint.c). (dump_subexp): Ditto. (dump_subexp_body_standard): Declare. (operator_length_standard): Declare. (op_name_standard): Declare. (print_subexp): Declare. (print_subexp_standard): Declare. * language.h (struct language_defn): Add la_exp_desc field to hold pointer to table for language-specific operators. Remove evaluate_exp field, which is now in struct exp_descriptor. * parse.c (operator_length): Move most code to new operator_length_standard function. Use language-specific information. (operator_length_standard): New function taking most code from operator_length. (exp_descriptor_standard): New constant. * expression.h (enum exp_opcode): Add definitions of OP_EXTENDED0 and OP_EXTENDED_LAST. * expprint.c (print_subexp): Use language-specific print_subexp. Make global; remove static declaration. Move most code to print_subexp_standard. (print_subexp_standard): New function, containing code formerly in print_subexp. (op_name): Add expression to argument signature. Use langauge-specific op_name. Move most code to op_name_standard. (op_name_standard): New function, containing code formerly in op_name. (dump_subexp): Use new version of op_name function. Use language-specific dump_subexp_body, and move most existing code to dump_subexp_body_standard. (dump_raw_expression): Use new op_name interface. (dump_subexp_body): Move most code to dump_subexp_body_standard. (dump_subexp_body_standard): New function, containing code formerly in dump_subexp_body. * language.c (unknown_language): Add default la_exp_desc field and remove evaluate_exp field. (auto_language): Ditto. (local_language): Ditto. * f-lang.c (f_language_defn): Ditto. * c-lang.c (c_language_defn): Ditto. (cplus_language_defn): Ditto. (asm_language_defn): Ditto. (minimal_language_defn): Ditto. * p-lang.c (pascal_language_defn): Ditto. * m2-lang.c (m2_language_defn): Ditto. * objc-lang.c (objc_language_defn): Ditto. * jv-lang.c (exp_descriptor_java): New variable, containing Java-specific expression evaluator. (java_language_defn): Add la_exp_desc field and remove evaluate_exp field. * scm-lang.c (exp_descriptor_scm): New variable, containing Scheme-specific expression evaluator. (scm_language_defn): Add la_exp_desc field and remove evaluate_exp field. * objc-lang.c (print_object_command): Take evaluate_exp from the la_exp_desc field. * Makefile.in (eval.o): Add dependency on parser-defs.h. * eval.c: Include parser-defs.h for the full declaration of la_exp_desc's type. (evaluate_subexp): Get evaluate_exp out of la_exp_desc field.
2003-09-25 08:40:45 +00:00
{
expr->language_defn->la_exp_desc->operator_length (expr, endpos,
oplenp, argsp);
}
/* Default value for operator_length in exp_descriptor vectors. */
void
operator_length_standard (struct expression *expr, int endpos,
int *oplenp, int *argsp)
{
int oplen = 1;
int args = 0;
enum f90_range_type range_type;
int i;
if (endpos < 1)
2005-02-10 Andrew Cagney <cagney@gnu.org> Mark up all error and warning messages. * ada-lang.c, amd64-tdep.c, arch-utils.c, breakpoint.c: Update. * bsd-kvm.c, bsd-uthread.c, coff-solib.h, coffread.c: Update. * core-aout.c, core-regset.c, corefile.c, corelow.c: Update. * cp-abi.c, cp-support.c, cp-valprint.c, cris-tdep.c: Update. * dbxread.c, demangle.c, doublest.c, dsrec.c: Update. * dve3900-rom.c, dwarf2expr.c, dwarf2loc.c: Update. * dwarf2read.c, dwarfread.c, elfread.c, eval.c: Update. * event-top.c, exec.c, expprint.c, f-lang.c: Update. * f-typeprint.c, f-valprint.c, fbsd-nat.c, findvar.c: Update. * frame.c, frv-linux-tdep.c, gcore.c, gdbtypes.c: Update. * gnu-nat.c, gnu-v2-abi.c, gnu-v3-abi.c, go32-nat.c: Update. * hpacc-abi.c, hppa-hpux-nat.c, hppa-hpux-tdep.c: Update. * hppa-linux-nat.c, hppa-linux-tdep.c, hppa-tdep.c: Update. * hpread.c, hpux-thread.c, i386-linux-nat.c: Update. * i386-linux-tdep.c, i386-tdep.c, i386bsd-nat.c: Update. * i386gnu-nat.c, i387-tdep.c, ia64-linux-nat.c: Update. * ia64-tdep.c, inf-child.c, inf-ptrace.c, inf-ttrace.c: Update. * infcall.c, infcmd.c, inflow.c, infptrace.c, infrun.c: Update. * inftarg.c, interps.c, irix5-nat.c, jv-lang.c: Update. * kod-cisco.c, kod.c, language.c, libunwind-frame.c: Update. * linespec.c, linux-nat.c, linux-thread-db.c, m2-lang.c: Update. * m32r-rom.c, m68hc11-tdep.c, m68k-tdep.c: Update. * m68klinux-nat.c, macrocmd.c, macroexp.c, main.c: Update. * maint.c, mdebugread.c, mem-break.c, memattr.c: Update. * mips-linux-tdep.c, mips-tdep.c, mipsread.c, monitor.c: Update. * nlmread.c, nto-procfs.c, objc-lang.c, objfiles.c: Update. * observer.c, ocd.c, p-lang.c, p-typeprint.c: Update. * p-valprint.c, pa64solib.c, parse.c, ppc-linux-tdep.c: Update. * ppcnbsd-tdep.c, printcmd.c, procfs.c, remote-e7000.c: Update. * remote-fileio.c, remote-m32r-sdi.c, remote-rdi.c: Update. * remote-rdp.c, remote-sim.c, remote-st.c: Update. * remote-utils.c, remote-utils.h, remote.c: Update. * rom68k-rom.c, rs6000-nat.c, s390-tdep.c, scm-lang.c: Update. * ser-e7kpc.c, ser-tcp.c, ser-unix.c, sh-tdep.c: Update. * sh3-rom.c, shnbsd-tdep.c, sol-thread.c, solib-aix5.c: Update. * solib-frv.c, solib-irix.c, solib-osf.c, solib-pa64.c: Update. * solib-som.c, solib-sunos.c, solib-svr4.c, solib.c: Update. * somread.c, somsolib.c, source.c, stabsread.c: Update. * stack.c, std-regs.c, symfile-mem.c, symfile.c: Update. * symmisc.c, symtab.c, target.c, thread.c, top.c: Update. * tracepoint.c, trad-frame.c, typeprint.c, utils.c: Update. * uw-thread.c, valarith.c, valops.c, valprint.c: Update. * value.c, varobj.c, version.in, win32-nat.c, wince.c: Update. * xcoffread.c, xcoffsolib.c, cli/cli-cmds.c: Update. * cli/cli-decode.c, cli/cli-dump.c, cli/cli-logging.c: Update. * cli/cli-script.c, cli/cli-setshow.c, mi/mi-cmd-break.c: Update. * mi/mi-cmd-disas.c, mi/mi-cmd-env.c, mi/mi-cmd-file.c: Update. * mi/mi-cmd-stack.c, mi/mi-cmd-var.c, mi/mi-getopt.c: Update. * mi/mi-symbol-cmds.c, tui/tui-layout.c, tui/tui-stack.c: Update. * tui/tui-win.c: Update.
2005-02-11 04:06:14 +00:00
error (_("?error in operator_length_standard"));
i = (int) expr->elts[endpos - 1].opcode;
switch (i)
{
/* C++ */
case OP_SCOPE:
oplen = longest_to_int (expr->elts[endpos - 2].longconst);
oplen = 5 + BYTES_TO_EXP_ELEM (oplen + 1);
break;
case OP_LONG:
case OP_DOUBLE:
case OP_DECFLOAT:
case OP_VAR_VALUE:
oplen = 4;
break;
case OP_TYPE:
case OP_BOOL:
case OP_LAST:
case OP_INTERNALVAR:
oplen = 3;
break;
case OP_COMPLEX:
oplen = 3;
args = 2;
1999-07-07 20:19:36 +00:00
break;
case OP_FUNCALL:
case OP_F77_UNDETERMINED_ARGLIST:
oplen = 3;
args = 1 + longest_to_int (expr->elts[endpos - 2].longconst);
break;
case OP_OBJC_MSGCALL: /* Objective C message (method) call */
oplen = 4;
args = 1 + longest_to_int (expr->elts[endpos - 2].longconst);
break;
case UNOP_MAX:
case UNOP_MIN:
oplen = 3;
break;
1999-07-07 20:19:36 +00:00
case BINOP_VAL:
case UNOP_CAST:
case UNOP_MEMVAL:
oplen = 3;
args = 1;
break;
case UNOP_MEMVAL_TLS:
oplen = 4;
args = 1;
break;
case UNOP_ABS:
case UNOP_CAP:
case UNOP_CHR:
case UNOP_FLOAT:
case UNOP_HIGH:
case UNOP_ODD:
case UNOP_ORD:
case UNOP_TRUNC:
oplen = 1;
args = 1;
break;
case OP_LABELED:
case STRUCTOP_STRUCT:
case STRUCTOP_PTR:
args = 1;
/* fall through */
case OP_REGISTER:
case OP_M2_STRING:
case OP_STRING:
case OP_OBJC_NSSTRING: /* Objective C Foundation Class NSString constant */
case OP_OBJC_SELECTOR: /* Objective C "@selector" pseudo-op */
case OP_NAME:
oplen = longest_to_int (expr->elts[endpos - 2].longconst);
oplen = 4 + BYTES_TO_EXP_ELEM (oplen + 1);
break;
case OP_BITSTRING:
oplen = longest_to_int (expr->elts[endpos - 2].longconst);
oplen = (oplen + HOST_CHAR_BIT - 1) / HOST_CHAR_BIT;
oplen = 4 + BYTES_TO_EXP_ELEM (oplen);
break;
case OP_ARRAY:
oplen = 4;
args = longest_to_int (expr->elts[endpos - 2].longconst);
args -= longest_to_int (expr->elts[endpos - 3].longconst);
args += 1;
break;
case TERNOP_COND:
case TERNOP_SLICE:
case TERNOP_SLICE_COUNT:
args = 3;
break;
/* Modula-2 */
1999-07-07 20:19:36 +00:00
case MULTI_SUBSCRIPT:
oplen = 3;
1999-07-07 20:19:36 +00:00
args = 1 + longest_to_int (expr->elts[endpos - 2].longconst);
break;
case BINOP_ASSIGN_MODIFY:
oplen = 3;
args = 2;
break;
/* C++ */
case OP_THIS:
case OP_OBJC_SELF:
oplen = 2;
break;
case OP_F90_RANGE:
oplen = 3;
range_type = longest_to_int (expr->elts[endpos - 2].longconst);
switch (range_type)
{
case LOW_BOUND_DEFAULT:
case HIGH_BOUND_DEFAULT:
args = 1;
break;
case BOTH_BOUND_DEFAULT:
args = 0;
break;
case NONE_BOUND_DEFAULT:
args = 2;
break;
}
break;
default:
args = 1 + (i < (int) BINOP_END);
}
*oplenp = oplen;
*argsp = args;
}
/* Copy the subexpression ending just before index INEND in INEXPR
into OUTEXPR, starting at index OUTBEG.
In the process, convert it from suffix to prefix form.
If EXPOUT_LAST_STRUCT is -1, then this function always returns -1.
Otherwise, it returns the index of the subexpression which is the
left-hand-side of the expression at EXPOUT_LAST_STRUCT. */
static int
prefixify_subexp (struct expression *inexpr,
struct expression *outexpr, int inend, int outbeg)
{
int oplen;
int args;
int i;
int *arglens;
enum exp_opcode opcode;
int result = -1;
operator_length (inexpr, inend, &oplen, &args);
/* Copy the final operator itself, from the end of the input
to the beginning of the output. */
inend -= oplen;
memcpy (&outexpr->elts[outbeg], &inexpr->elts[inend],
EXP_ELEM_TO_BYTES (oplen));
outbeg += oplen;
if (expout_last_struct == inend)
result = outbeg - oplen;
/* Find the lengths of the arg subexpressions. */
arglens = (int *) alloca (args * sizeof (int));
for (i = args - 1; i >= 0; i--)
{
oplen = length_of_subexp (inexpr, inend);
arglens[i] = oplen;
inend -= oplen;
}
/* Now copy each subexpression, preserving the order of
the subexpressions, but prefixifying each one.
In this loop, inend starts at the beginning of
the expression this level is working on
and marches forward over the arguments.
outbeg does similarly in the output. */
for (i = 0; i < args; i++)
{
int r;
oplen = arglens[i];
inend += oplen;
r = prefixify_subexp (inexpr, outexpr, inend, outbeg);
if (r != -1)
{
/* Return immediately. We probably have only parsed a
partial expression, so we don't want to try to reverse
the other operands. */
return r;
}
outbeg += oplen;
}
return result;
}
/* This page contains the two entry points to this file. */
/* Read an expression from the string *STRINGPTR points to,
parse it, and return a pointer to a struct expression that we malloc.
Use block BLOCK as the lexical context for variable names;
if BLOCK is zero, use the block of the selected stack frame.
Meanwhile, advance *STRINGPTR to point after the expression,
at the first nonwhite character that is not part of the expression
(possibly a null character).
If COMMA is nonzero, stop if a comma is reached. */
struct expression *
2000-07-30 01:48:28 +00:00
parse_exp_1 (char **stringptr, struct block *block, int comma)
{
return parse_exp_in_context (stringptr, block, comma, 0, NULL);
}
/* As for parse_exp_1, except that if VOID_CONTEXT_P, then
no value is expected from the expression.
OUT_SUBEXP is set when attempting to complete a field name; in this
case it is set to the index of the subexpression on the
left-hand-side of the struct op. If not doing such completion, it
is left untouched. */
static struct expression *
parse_exp_in_context (char **stringptr, struct block *block, int comma,
int void_context_p, int *out_subexp)
{
volatile struct gdb_exception except;
struct cleanup *old_chain;
int subexp;
lexptr = *stringptr;
prev_lexptr = NULL;
paren_depth = 0;
type_stack_depth = 0;
expout_last_struct = -1;
comma_terminates = comma;
if (lexptr == 0 || *lexptr == 0)
2005-02-11 Andrew Cagney <cagney@gnu.org> Mark up error_no_arg, query, perror_with_name, complaint, and internal_error. * breakpoint.c, cp-abi.c, cp-namespace.c, cp-support.c: Update. * cris-tdep.c, dbxread.c, dictionary.c, dsrec.c: Update. * dummy-frame.c, dve3900-rom.c, dwarf2-frame.c, dwarf2expr.c: Update. * dwarf2read.c, dwarfread.c, elfread.c, event-loop.c: Update. * exceptions.c, exec.c, f-lang.c, findvar.c, fork-child.c: Update. * frame-unwind.c, frame.c, frv-linux-tdep.c, frv-tdep.c: Update. * gdb_assert.h, gdbarch.c, gdbtypes.c, gnu-nat.c: Update. * go32-nat.c, hppa-tdep.c, hppabsd-nat.c, hpread.c: Update. * i386-linux-nat.c, i386-nat.c, i386-tdep.c, i386bsd-nat.c: Update. * i386fbsd-nat.c, inf-ptrace.c, inf-ttrace.c, infcall.c: Update. * infcmd.c, inflow.c, infptrace.c, infrun.c, inftarg.c: Update. * interps.c, language.c, linespec.c, linux-nat.c: Update. * m32r-linux-nat.c, m68k-tdep.c, m68kbsd-nat.c: Update. * m68klinux-nat.c, m88kbsd-nat.c, macroexp.c, macroscope.c: Update. * macrotab.c, maint.c, mdebugread.c, memattr.c: Update. * mips-linux-tdep.c, mips-tdep.c, mips64obsd-nat.c: Update. * mipsnbsd-nat.c, mn10300-tdep.c, monitor.c, nto-procfs.c: Update. * objc-lang.c, objfiles.c, objfiles.h, ocd.c, osabi.c: Update. * parse.c, ppc-bdm.c, ppc-linux-nat.c, ppc-sysv-tdep.c: Update. * ppcnbsd-nat.c, ppcobsd-nat.c, printcmd.c, procfs.c: Update. * regcache.c, reggroups.c, remote-e7000.c, remote-mips.c: Update. * remote-rdp.c, remote-sds.c, remote-sim.c, remote-st.c: Update. * remote-utils.c, remote.c, rs6000-nat.c, rs6000-tdep.c: Update. * s390-nat.c, s390-tdep.c, sentinel-frame.c, serial.c: Update. * sh-tdep.c, sh3-rom.c, sh64-tdep.c, shnbsd-nat.c: Update. * solib-aix5.c, solib-svr4.c, solib.c, source.c: Update. * sparc-nat.c, stabsread.c, stack.c, symfile.c, symtab.c: Update. * symtab.h, target.c, tracepoint.c, ui-file.c, ui-out.c: Update. * utils.c, valops.c, valprint.c, vax-nat.c, vaxbsd-nat.c: Update. * win32-nat.c, xcoffread.c, xstormy16-tdep.c: Update. * cli/cli-cmds.c, cli/cli-logging.c, cli/cli-script.c: Update. * cli/cli-setshow.c, mi/mi-cmd-break.c, mi/mi-cmds.c: Update. * mi/mi-console.c, mi/mi-getopt.c, mi/mi-out.c: Update. * tui/tui-file.c, tui/tui-interp.c: Update.
2005-02-11 18:13:55 +00:00
error_no_arg (_("expression to compute"));
2000-05-22 09:02:23 +00:00
old_chain = make_cleanup (free_funcalls, 0 /*ignore*/);
funcall_chain = 0;
expression_context_block = block;
/* If no context specified, try using the current frame, if any. */
if (!expression_context_block)
expression_context_block = get_selected_block (&expression_context_pc);
else
expression_context_pc = BLOCK_START (expression_context_block);
/* Fall back to using the current source static context, if any. */
if (!expression_context_block)
{
struct symtab_and_line cursal = get_current_source_symtab_and_line ();
if (cursal.symtab)
expression_context_block
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (cursal.symtab), STATIC_BLOCK);
if (expression_context_block)
expression_context_pc = BLOCK_START (expression_context_block);
}
expout_size = 10;
expout_ptr = 0;
expout = (struct expression *)
xmalloc (sizeof (struct expression) + EXP_ELEM_TO_BYTES (expout_size));
expout->language_defn = current_language;
expout->gdbarch = current_gdbarch;
TRY_CATCH (except, RETURN_MASK_ALL)
{
if (current_language->la_parser ())
current_language->la_error (NULL);
}
if (except.reason < 0)
{
if (! in_parse_field)
{
xfree (expout);
throw_exception (except);
}
}
discard_cleanups (old_chain);
/* Record the actual number of expression elements, and then
reallocate the expression memory so that we free up any
excess elements. */
expout->nelts = expout_ptr;
expout = (struct expression *)
xrealloc ((char *) expout,
sizeof (struct expression) + EXP_ELEM_TO_BYTES (expout_ptr));;
/* Convert expression from postfix form as generated by yacc
parser, to a prefix form. */
if (expressiondebug)
dump_raw_expression (expout, gdb_stdlog,
"before conversion to prefix form");
subexp = prefixify_expression (expout);
if (out_subexp)
*out_subexp = subexp;
current_language->la_post_parser (&expout, void_context_p);
if (expressiondebug)
dump_prefix_expression (expout, gdb_stdlog);
*stringptr = lexptr;
return expout;
}
/* Parse STRING as an expression, and complain if this fails
to use up all of the contents of STRING. */
struct expression *
2000-07-30 01:48:28 +00:00
parse_expression (char *string)
{
struct expression *exp;
exp = parse_exp_1 (&string, 0, 0);
if (*string)
2005-02-10 Andrew Cagney <cagney@gnu.org> Mark up all error and warning messages. * ada-lang.c, amd64-tdep.c, arch-utils.c, breakpoint.c: Update. * bsd-kvm.c, bsd-uthread.c, coff-solib.h, coffread.c: Update. * core-aout.c, core-regset.c, corefile.c, corelow.c: Update. * cp-abi.c, cp-support.c, cp-valprint.c, cris-tdep.c: Update. * dbxread.c, demangle.c, doublest.c, dsrec.c: Update. * dve3900-rom.c, dwarf2expr.c, dwarf2loc.c: Update. * dwarf2read.c, dwarfread.c, elfread.c, eval.c: Update. * event-top.c, exec.c, expprint.c, f-lang.c: Update. * f-typeprint.c, f-valprint.c, fbsd-nat.c, findvar.c: Update. * frame.c, frv-linux-tdep.c, gcore.c, gdbtypes.c: Update. * gnu-nat.c, gnu-v2-abi.c, gnu-v3-abi.c, go32-nat.c: Update. * hpacc-abi.c, hppa-hpux-nat.c, hppa-hpux-tdep.c: Update. * hppa-linux-nat.c, hppa-linux-tdep.c, hppa-tdep.c: Update. * hpread.c, hpux-thread.c, i386-linux-nat.c: Update. * i386-linux-tdep.c, i386-tdep.c, i386bsd-nat.c: Update. * i386gnu-nat.c, i387-tdep.c, ia64-linux-nat.c: Update. * ia64-tdep.c, inf-child.c, inf-ptrace.c, inf-ttrace.c: Update. * infcall.c, infcmd.c, inflow.c, infptrace.c, infrun.c: Update. * inftarg.c, interps.c, irix5-nat.c, jv-lang.c: Update. * kod-cisco.c, kod.c, language.c, libunwind-frame.c: Update. * linespec.c, linux-nat.c, linux-thread-db.c, m2-lang.c: Update. * m32r-rom.c, m68hc11-tdep.c, m68k-tdep.c: Update. * m68klinux-nat.c, macrocmd.c, macroexp.c, main.c: Update. * maint.c, mdebugread.c, mem-break.c, memattr.c: Update. * mips-linux-tdep.c, mips-tdep.c, mipsread.c, monitor.c: Update. * nlmread.c, nto-procfs.c, objc-lang.c, objfiles.c: Update. * observer.c, ocd.c, p-lang.c, p-typeprint.c: Update. * p-valprint.c, pa64solib.c, parse.c, ppc-linux-tdep.c: Update. * ppcnbsd-tdep.c, printcmd.c, procfs.c, remote-e7000.c: Update. * remote-fileio.c, remote-m32r-sdi.c, remote-rdi.c: Update. * remote-rdp.c, remote-sim.c, remote-st.c: Update. * remote-utils.c, remote-utils.h, remote.c: Update. * rom68k-rom.c, rs6000-nat.c, s390-tdep.c, scm-lang.c: Update. * ser-e7kpc.c, ser-tcp.c, ser-unix.c, sh-tdep.c: Update. * sh3-rom.c, shnbsd-tdep.c, sol-thread.c, solib-aix5.c: Update. * solib-frv.c, solib-irix.c, solib-osf.c, solib-pa64.c: Update. * solib-som.c, solib-sunos.c, solib-svr4.c, solib.c: Update. * somread.c, somsolib.c, source.c, stabsread.c: Update. * stack.c, std-regs.c, symfile-mem.c, symfile.c: Update. * symmisc.c, symtab.c, target.c, thread.c, top.c: Update. * tracepoint.c, trad-frame.c, typeprint.c, utils.c: Update. * uw-thread.c, valarith.c, valops.c, valprint.c: Update. * value.c, varobj.c, version.in, win32-nat.c, wince.c: Update. * xcoffread.c, xcoffsolib.c, cli/cli-cmds.c: Update. * cli/cli-decode.c, cli/cli-dump.c, cli/cli-logging.c: Update. * cli/cli-script.c, cli/cli-setshow.c, mi/mi-cmd-break.c: Update. * mi/mi-cmd-disas.c, mi/mi-cmd-env.c, mi/mi-cmd-file.c: Update. * mi/mi-cmd-stack.c, mi/mi-cmd-var.c, mi/mi-getopt.c: Update. * mi/mi-symbol-cmds.c, tui/tui-layout.c, tui/tui-stack.c: Update. * tui/tui-win.c: Update.
2005-02-11 04:06:14 +00:00
error (_("Junk after end of expression."));
return exp;
}
/* Parse STRING as an expression. If parsing ends in the middle of a
field reference, return the type of the left-hand-side of the
reference; furthermore, if the parsing ends in the field name,
return the field name in *NAME. In all other cases, return NULL.
Returned non-NULL *NAME must be freed by the caller. */
struct type *
parse_field_expression (char *string, char **name)
{
struct expression *exp = NULL;
struct value *val;
int subexp;
volatile struct gdb_exception except;
TRY_CATCH (except, RETURN_MASK_ALL)
{
in_parse_field = 1;
exp = parse_exp_in_context (&string, 0, 0, 0, &subexp);
}
in_parse_field = 0;
if (except.reason < 0 || ! exp)
return NULL;
if (expout_last_struct == -1)
{
xfree (exp);
return NULL;
}
*name = extract_field_op (exp, &subexp);
if (!*name)
{
xfree (exp);
return NULL;
}
/* (*NAME) is a part of the EXP memory block freed below. */
*name = xstrdup (*name);
val = evaluate_subexpression_type (exp, subexp);
xfree (exp);
return value_type (val);
}
/* A post-parser that does nothing */
void
null_post_parser (struct expression **exp, int void_context_p)
{
}
/* Stuff for maintaining a stack of types. Currently just used by C, but
probably useful for any language which declares its types "backwards". */
static void
check_type_stack_depth (void)
{
if (type_stack_depth == type_stack_size)
{
type_stack_size *= 2;
type_stack = (union type_stack_elt *)
xrealloc ((char *) type_stack, type_stack_size * sizeof (*type_stack));
}
}
void
push_type (enum type_pieces tp)
{
check_type_stack_depth ();
type_stack[type_stack_depth++].piece = tp;
}
void
2000-07-30 01:48:28 +00:00
push_type_int (int n)
{
check_type_stack_depth ();
type_stack[type_stack_depth++].int_val = n;
}
void
push_type_address_space (char *string)
{
push_type_int (address_space_name_to_int (string));
}
1999-07-07 20:19:36 +00:00
enum type_pieces
2000-07-30 01:48:28 +00:00
pop_type (void)
{
if (type_stack_depth)
return type_stack[--type_stack_depth].piece;
return tp_end;
}
int
2000-07-30 01:48:28 +00:00
pop_type_int (void)
{
if (type_stack_depth)
return type_stack[--type_stack_depth].int_val;
/* "Can't happen". */
return 0;
}
/* Pop the type stack and return the type which corresponds to FOLLOW_TYPE
as modified by all the stuff on the stack. */
struct type *
2000-07-30 01:48:28 +00:00
follow_types (struct type *follow_type)
{
int done = 0;
int make_const = 0;
int make_volatile = 0;
int make_addr_space = 0;
int array_size;
struct type *range_type;
while (!done)
switch (pop_type ())
{
case tp_end:
done = 1;
if (make_const)
follow_type = make_cv_type (make_const,
TYPE_VOLATILE (follow_type),
follow_type, 0);
if (make_volatile)
follow_type = make_cv_type (TYPE_CONST (follow_type),
make_volatile,
follow_type, 0);
if (make_addr_space)
follow_type = make_type_with_address_space (follow_type,
make_addr_space);
make_const = make_volatile = 0;
make_addr_space = 0;
break;
case tp_const:
make_const = 1;
break;
case tp_volatile:
make_volatile = 1;
break;
case tp_space_identifier:
make_addr_space = pop_type_int ();
break;
case tp_pointer:
follow_type = lookup_pointer_type (follow_type);
if (make_const)
follow_type = make_cv_type (make_const,
TYPE_VOLATILE (follow_type),
follow_type, 0);
if (make_volatile)
follow_type = make_cv_type (TYPE_CONST (follow_type),
make_volatile,
follow_type, 0);
if (make_addr_space)
follow_type = make_type_with_address_space (follow_type,
make_addr_space);
make_const = make_volatile = 0;
make_addr_space = 0;
break;
case tp_reference:
follow_type = lookup_reference_type (follow_type);
if (make_const)
follow_type = make_cv_type (make_const,
TYPE_VOLATILE (follow_type),
follow_type, 0);
if (make_volatile)
follow_type = make_cv_type (TYPE_CONST (follow_type),
make_volatile,
follow_type, 0);
if (make_addr_space)
follow_type = make_type_with_address_space (follow_type,
make_addr_space);
make_const = make_volatile = 0;
make_addr_space = 0;
break;
case tp_array:
array_size = pop_type_int ();
/* FIXME-type-allocation: need a way to free this type when we are
done with it. */
range_type =
create_range_type ((struct type *) NULL,
builtin_type_int32, 0,
array_size >= 0 ? array_size - 1 : 0);
follow_type =
create_array_type ((struct type *) NULL,
follow_type, range_type);
if (array_size < 0)
gdb/ Replace TYPE_ARRAY_{UPPER,LOWER}_BOUND_TYPE by a bit if {un,}defined. * c-typeprint.c (c_type_print_varspec_suffix), m2-typeprint.c (m2_array), p-typeprint.c (pascal_type_print_varspec_prefix), valops.c (value_cast), varobj.c (c_number_of_children): Replace TYPE_ARRAY_UPPER_BOUND_TYPE compared to BOUND_CANNOT_BE_DETERMINED by TYPE_ARRAY_UPPER_BOUND_IS_UNDEFINED. * parse.c (follow_types): Use TYPE_ARRAY_UPPER_BOUND_IS_UNDEFINED. * f-valprint.c (f77_get_dynamic_upperbound): Replace with ... (f77_get_upperbound): ... this function handling now only TYPE_ARRAY_UPPER_BOUND_IS_UNDEFINED. (f77_get_dynamic_lowerbound): Replace with ... (f77_get_lowerbound): ... this function handling now only TYPE_ARRAY_LOWER_BOUND_IS_UNDEFINED. (f77_get_dynamic_length_of_aggregate, f77_create_arrayprint_offset_tbl): Update their callers. * eval.c (evaluate_subexp_standard): Update their callers. * f-lang.h (f77_get_dynamic_upperbound, f77_get_upperbound) (f77_get_dynamic_lowerbound, f77_get_lowerbound): Update their prototypes. (BOUND_FETCH_OK, BOUND_FETCH_ERROR): Remove. * f-typeprint.c (f_type_print_varspec_suffix, f_type_print_base): Remove the lower_bound_was_default variable. Update the f77_get_dynamic_upperbound, f77_get_upperbound and TYPE_ARRAY_UPPER_BOUND_TYPE calls. * gdbtypes.c (print_bound_type): Remove the function. (recursive_dump_type): Remove its calls printing UPPER_BOUND_TYPE and LOWER_BOUND_TYPE. * gdbtypes.h (enum array_bound_type): Remove. (struct main_type): Remove the fields upper_bound_type and lower_bound_type. Comment the new overload of the field artificial. (TYPE_ARRAY_UPPER_BOUND_TYPE): Replace by ... (TYPE_ARRAY_UPPER_BOUND_IS_UNDEFINED): ... this macro. (TYPE_ARRAY_LOWER_BOUND_TYPE): Replace by ... (TYPE_ARRAY_LOWER_BOUND_IS_UNDEFINED): ... this macro. gdb/testsuite/ * gdb.base/maint.exp (maint print type): Remove printing UPPER_BOUND_TYPE and LOWER_BOUND_TYPE.
2008-10-02 22:06:08 +00:00
TYPE_ARRAY_UPPER_BOUND_IS_UNDEFINED (follow_type) = 1;
break;
case tp_function:
/* FIXME-type-allocation: need a way to free this type when we are
done with it. */
follow_type = lookup_function_type (follow_type);
break;
}
return follow_type;
}
/* This function avoids direct calls to fprintf
in the parser generated debug code. */
void
parser_fprintf (FILE *x, const char *y, ...)
{
va_list args;
va_start (args, y);
if (x == stderr)
vfprintf_unfiltered (gdb_stderr, y, args);
else
{
fprintf_unfiltered (gdb_stderr, " Unknown FILE used.\n");
vfprintf_unfiltered (gdb_stderr, y, args);
}
va_end (args);
}
1999-06-01 15:44:41 +00:00
void
2000-07-30 01:48:28 +00:00
_initialize_parse (void)
1999-06-01 15:44:41 +00:00
{
type_stack_size = 80;
type_stack_depth = 0;
type_stack = (union type_stack_elt *)
xmalloc (type_stack_size * sizeof (*type_stack));
add_setshow_zinteger_cmd ("expression", class_maintenance,
&expressiondebug, _("\
Set expression debugging."), _("\
Show expression debugging."), _("\
When non-zero, the internal representation of expressions will be printed."),
NULL,
2005-02-24 Andrew Cagney <cagney@gnu.org> Add show_VARIABLE functions, update add_setshow call. * varobj.c (_initialize_varobj, show_varobjdebug): Add and update. * valprint.c (_initialize_valprint, show_print_max) (show_stop_print_at_null, show_repeat_count_threshold) (show_prettyprint_structs, show_unionprint) (show_prettyprint_arrays, show_addressprint, show_input_radix) (show_output_radix): Ditto. * valops.c (_initialize_valops, show_overload_resolution): Ditto. * utils.c (initialize_utils, show_chars_per_line) (show_lines_per_page, show_demangle, show_pagination_enabled) (show_sevenbit_strings, show_asm_demangle): Ditto * tui/tui-win.c (_initialize_tui_win, show_tui_border_kind) (show_tui_border_mode, show_tui_active_border_mode): Ditto. * top.c (init_main, show_new_async_prompt) (show_async_command_editing_p, show_write_history_p) (show_history_size, show_history_filename, show_caution) (show_annotation_level, init_main): Ditto. * target.c (initialize_targets, show_targetdebug) (show_trust_readonly): Ditto. * symfile.c (_initialize_symfile, show_symbol_reloading) (show_ext_args, show_download_write_size) (show_debug_file_directory): Ditto. * source.c (_initialize_source, show_lines_to_list): Ditto. * solib.c (_initialize_solib, show_auto_solib_add) (show_solib_search_path): Ditto. * p-valprint.c (_initialize_pascal_valprint) (show_pascal_static_field_print): Ditto. * printcmd.c (_initialize_printcmd, show_max_symbolic_offset) (show_print_symbol_filename): Add and update. * parse.c (_initialize_parse, show_expressiondebug): Dito. * observer.c (_initialize_observer, show_observer_debug): Dito. * maint.c (_initialize_maint_cmds, show_watchdog) (show_maintenance_profile_p): Dito. * linux-nat.c (_initialize_linux_nat, show_debug_linux_nat): Dito. * infrun.c (_initialize_infrun, show_debug_infrun) (show_stop_on_solib_events, show_follow_fork_mode_string) (show_scheduler_mode, show_step_stop_if_no_debug): Ditto. * infcall.c (_initialize_infcall, show_coerce_float_to_double_p) (show_unwind_on_signal_p): Ditto. * gdbtypes.c (build_gdbtypes, show_opaque_type_resolution) (_initialize_gdbtypes, show_overload_debug): Ditto. * gdb-events.c, gdb-events.sh (_initialize_gdb_events) (show_gdb_events_debug): Ditto. * gdbarch.c, gdbarch.sh (show_gdbarch_debug) (_initialize_gdbarch): Ditto. * frame.c (_initialize_frame, show_backtrace_past_main) (show_backtrace_past_entry, show_backtrace_limit) (show_frame_debug): Ditto. * exec.c (_initialize_exec, show_write_files): Ditto. * dwarf2read.c (_initialize_dwarf2_read) (show_dwarf2_max_cache_age): Ditto. * demangle.c (_initialize_demangler) (show_demangling_style_names): Ditto. * dcache.c (_initialize_dcache, show_dcache_enabled_p): Ditto. * cp-valprint.c (show_static_field_print) (_initialize_cp_valprint, show_vtblprint, show_objectprint): Ditto. * corefile.c (_initialize_core, show_gnutarget_string): Ditto. * cli/cli-logging.c (_initialize_cli_logging) (show_logging_overwrite, show_logging_redirect) (show_logging_filename): Ditto. * cli/cli-cmds.c (show_info_verbose, show_history_expansion_p) (init_cli_cmds, show_baud_rate, show_remote_debug) (show_remote_timeout, show_max_user_call_depth): Ditto. * charset.c (show_host_charset_name, show_target_charset_name) (initialize_charset): Ditto. * breakpoint.c (show_can_use_hw_watchpoints) (show_pending_break_support, _initialize_breakpoint): Ditto.
2005-02-24 13:51:36 +00:00
show_expressiondebug,
&setdebuglist, &showdebuglist);
}