| /* MI Command Set - stack commands. |
| Copyright (C) 2000-2024 Free Software Foundation, Inc. |
| Contributed by Cygnus Solutions (a Red Hat company). |
| |
| 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 |
| (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/>. */ |
| |
| #include "event-top.h" |
| #include "target.h" |
| #include "frame.h" |
| #include "value.h" |
| #include "mi-cmds.h" |
| #include "ui-out.h" |
| #include "symtab.h" |
| #include "block.h" |
| #include "stack.h" |
| #include "dictionary.h" |
| #include "language.h" |
| #include "valprint.h" |
| #include "utils.h" |
| #include "mi-getopt.h" |
| #include "extension.h" |
| #include <ctype.h> |
| #include "mi-parse.h" |
| #include <optional> |
| #include "gdbsupport/gdb-safe-ctype.h" |
| #include "inferior.h" |
| #include "observable.h" |
| |
| enum what_to_list { locals, arguments, all }; |
| |
| static void list_args_or_locals (const frame_print_options &fp_opts, |
| enum what_to_list what, |
| enum print_values values, |
| const frame_info_ptr &fi, |
| int skip_unavailable); |
| |
| /* True if we want to allow Python-based frame filters. */ |
| static int frame_filters = 0; |
| |
| void |
| mi_cmd_enable_frame_filters (const char *command, const char *const *argv, |
| int argc) |
| { |
| if (argc != 0) |
| error (_("-enable-frame-filters: no arguments allowed")); |
| frame_filters = 1; |
| } |
| |
| /* Like apply_ext_lang_frame_filter, but take a print_values */ |
| |
| static enum ext_lang_bt_status |
| mi_apply_ext_lang_frame_filter (const frame_info_ptr &frame, |
| frame_filter_flags flags, |
| enum print_values print_values, |
| struct ui_out *out, |
| int frame_low, int frame_high) |
| { |
| /* ext_lang_frame_args's MI options are compatible with MI print |
| values. */ |
| return apply_ext_lang_frame_filter (frame, flags, |
| (enum ext_lang_frame_args) print_values, |
| out, |
| frame_low, frame_high); |
| } |
| |
| /* Print a list of the stack frames. Args can be none, in which case |
| we want to print the whole backtrace, or a pair of numbers |
| specifying the frame numbers at which to start and stop the |
| display. If the two numbers are equal, a single frame will be |
| displayed. */ |
| |
| void |
| mi_cmd_stack_list_frames (const char *command, const char *const *argv, |
| int argc) |
| { |
| int frame_low; |
| int frame_high; |
| int i; |
| frame_info_ptr fi; |
| enum ext_lang_bt_status result = EXT_LANG_BT_ERROR; |
| int raw_arg = 0; |
| int oind = 0; |
| enum opt |
| { |
| NO_FRAME_FILTERS |
| }; |
| static const struct mi_opt opts[] = |
| { |
| {"-no-frame-filters", NO_FRAME_FILTERS, 0}, |
| { 0, 0, 0 } |
| }; |
| |
| /* Parse arguments. In this instance we are just looking for |
| --no-frame-filters. */ |
| while (1) |
| { |
| const char *oarg; |
| int opt = mi_getopt ("-stack-list-frames", argc, argv, |
| opts, &oind, &oarg); |
| if (opt < 0) |
| break; |
| switch ((enum opt) opt) |
| { |
| case NO_FRAME_FILTERS: |
| raw_arg = oind; |
| break; |
| } |
| } |
| |
| /* After the last option is parsed, there should either be low - |
| high range, or no further arguments. */ |
| if ((argc - oind != 0) && (argc - oind != 2)) |
| error (_("-stack-list-frames: Usage: [--no-frame-filters] [FRAME_LOW FRAME_HIGH]")); |
| |
| /* If there is a range, set it. */ |
| if (argc - oind == 2) |
| { |
| frame_low = atoi (argv[0 + oind]); |
| frame_high = atoi (argv[1 + oind]); |
| } |
| else |
| { |
| /* Called with no arguments, it means we want the whole |
| backtrace. */ |
| frame_low = -1; |
| frame_high = -1; |
| } |
| |
| /* Let's position fi on the frame at which to start the |
| display. Could be the innermost frame if the whole stack needs |
| displaying, or if frame_low is 0. */ |
| for (i = 0, fi = get_current_frame (); |
| fi && i < frame_low; |
| i++, fi = get_prev_frame (fi)); |
| |
| if (fi == NULL) |
| error (_("-stack-list-frames: Not enough frames in stack.")); |
| |
| ui_out_emit_list list_emitter (current_uiout, "stack"); |
| |
| if (! raw_arg && frame_filters) |
| { |
| frame_filter_flags flags = PRINT_LEVEL | PRINT_FRAME_INFO; |
| int py_frame_low = frame_low; |
| |
| /* We cannot pass -1 to frame_low, as that would signify a |
| relative backtrace from the tail of the stack. So, in the case |
| of frame_low == -1, assign and increment it. */ |
| if (py_frame_low == -1) |
| py_frame_low++; |
| |
| result = apply_ext_lang_frame_filter (get_current_frame (), flags, |
| NO_VALUES, current_uiout, |
| py_frame_low, frame_high); |
| } |
| |
| /* Run the inbuilt backtrace if there are no filters registered, or |
| if "--no-frame-filters" has been specified from the command. */ |
| if (! frame_filters || raw_arg || result == EXT_LANG_BT_NO_FILTERS) |
| { |
| /* Now let's print the frames up to frame_high, or until there are |
| frames in the stack. */ |
| for (; |
| fi && (i <= frame_high || frame_high == -1); |
| i++, fi = get_prev_frame (fi)) |
| { |
| QUIT; |
| /* Print the location and the address always, even for level 0. |
| If args is 0, don't print the arguments. */ |
| print_frame_info (user_frame_print_options, |
| fi, 1, LOC_AND_ADDRESS, 0 /* args */, 0); |
| } |
| } |
| } |
| |
| void |
| mi_cmd_stack_info_depth (const char *command, const char *const *argv, |
| int argc) |
| { |
| int frame_high; |
| int i; |
| frame_info_ptr fi; |
| |
| if (argc > 1) |
| error (_("-stack-info-depth: Usage: [MAX_DEPTH]")); |
| |
| if (argc == 1) |
| frame_high = atoi (argv[0]); |
| else |
| /* Called with no arguments, it means we want the real depth of |
| the stack. */ |
| frame_high = -1; |
| |
| for (i = 0, fi = get_current_frame (); |
| fi && (i < frame_high || frame_high == -1); |
| i++, fi = get_prev_frame (fi)) |
| QUIT; |
| |
| current_uiout->field_signed ("depth", i); |
| } |
| |
| /* Print a list of the locals for the current frame. With argument of |
| 0, print only the names, with argument of 1 print also the |
| values. */ |
| |
| void |
| mi_cmd_stack_list_locals (const char *command, const char *const *argv, |
| int argc) |
| { |
| frame_info_ptr frame; |
| int raw_arg = 0; |
| enum ext_lang_bt_status result = EXT_LANG_BT_ERROR; |
| enum print_values print_value; |
| int oind = 0; |
| int skip_unavailable = 0; |
| |
| if (argc > 1) |
| { |
| enum opt |
| { |
| NO_FRAME_FILTERS, |
| SKIP_UNAVAILABLE, |
| }; |
| static const struct mi_opt opts[] = |
| { |
| {"-no-frame-filters", NO_FRAME_FILTERS, 0}, |
| {"-skip-unavailable", SKIP_UNAVAILABLE, 0}, |
| { 0, 0, 0 } |
| }; |
| |
| while (1) |
| { |
| const char *oarg; |
| /* Don't parse 'print-values' as an option. */ |
| int opt = mi_getopt ("-stack-list-locals", argc - 1, argv, |
| opts, &oind, &oarg); |
| |
| if (opt < 0) |
| break; |
| switch ((enum opt) opt) |
| { |
| case NO_FRAME_FILTERS: |
| raw_arg = oind; |
| break; |
| case SKIP_UNAVAILABLE: |
| skip_unavailable = 1; |
| break; |
| } |
| } |
| } |
| |
| /* After the last option is parsed, there should be only |
| 'print-values'. */ |
| if (argc - oind != 1) |
| error (_("-stack-list-locals: Usage: [--no-frame-filters] " |
| "[--skip-unavailable] PRINT_VALUES")); |
| |
| frame = get_selected_frame (NULL); |
| print_value = mi_parse_print_values (argv[oind]); |
| |
| if (! raw_arg && frame_filters) |
| { |
| frame_filter_flags flags = PRINT_LEVEL | PRINT_LOCALS; |
| |
| result = mi_apply_ext_lang_frame_filter (frame, flags, print_value, |
| current_uiout, 0, 0); |
| } |
| |
| /* Run the inbuilt backtrace if there are no filters registered, or |
| if "--no-frame-filters" has been specified from the command. */ |
| if (! frame_filters || raw_arg || result == EXT_LANG_BT_NO_FILTERS) |
| { |
| list_args_or_locals (user_frame_print_options, |
| locals, print_value, frame, |
| skip_unavailable); |
| } |
| } |
| |
| /* Print a list of the arguments for the current frame. With argument |
| of 0, print only the names, with argument of 1 print also the |
| values. */ |
| |
| void |
| mi_cmd_stack_list_args (const char *command, const char *const *argv, int argc) |
| { |
| int frame_low; |
| int frame_high; |
| int i; |
| frame_info_ptr fi; |
| enum print_values print_values; |
| struct ui_out *uiout = current_uiout; |
| int raw_arg = 0; |
| int oind = 0; |
| int skip_unavailable = 0; |
| enum ext_lang_bt_status result = EXT_LANG_BT_ERROR; |
| enum opt |
| { |
| NO_FRAME_FILTERS, |
| SKIP_UNAVAILABLE, |
| }; |
| static const struct mi_opt opts[] = |
| { |
| {"-no-frame-filters", NO_FRAME_FILTERS, 0}, |
| {"-skip-unavailable", SKIP_UNAVAILABLE, 0}, |
| { 0, 0, 0 } |
| }; |
| |
| while (1) |
| { |
| const char *oarg; |
| int opt = mi_getopt_allow_unknown ("-stack-list-args", argc, argv, |
| opts, &oind, &oarg); |
| |
| if (opt < 0) |
| break; |
| switch ((enum opt) opt) |
| { |
| case NO_FRAME_FILTERS: |
| raw_arg = oind; |
| break; |
| case SKIP_UNAVAILABLE: |
| skip_unavailable = 1; |
| break; |
| } |
| } |
| |
| if (argc - oind != 1 && argc - oind != 3) |
| error (_("-stack-list-arguments: Usage: " \ |
| "[--no-frame-filters] [--skip-unavailable] " |
| "PRINT_VALUES [FRAME_LOW FRAME_HIGH]")); |
| |
| if (argc - oind == 3) |
| { |
| frame_low = atoi (argv[1 + oind]); |
| frame_high = atoi (argv[2 + oind]); |
| } |
| else |
| { |
| /* Called with no arguments, it means we want args for the whole |
| backtrace. */ |
| frame_low = -1; |
| frame_high = -1; |
| } |
| |
| print_values = mi_parse_print_values (argv[oind]); |
| |
| /* Let's position fi on the frame at which to start the |
| display. Could be the innermost frame if the whole stack needs |
| displaying, or if frame_low is 0. */ |
| for (i = 0, fi = get_current_frame (); |
| fi && i < frame_low; |
| i++, fi = get_prev_frame (fi)); |
| |
| if (fi == NULL) |
| error (_("-stack-list-arguments: Not enough frames in stack.")); |
| |
| ui_out_emit_list list_emitter (uiout, "stack-args"); |
| |
| if (! raw_arg && frame_filters) |
| { |
| frame_filter_flags flags = PRINT_LEVEL | PRINT_ARGS; |
| if (user_frame_print_options.print_raw_frame_arguments) |
| flags |= PRINT_RAW_FRAME_ARGUMENTS; |
| int py_frame_low = frame_low; |
| |
| /* We cannot pass -1 to frame_low, as that would signify a |
| relative backtrace from the tail of the stack. So, in the case |
| of frame_low == -1, assign and increment it. */ |
| if (py_frame_low == -1) |
| py_frame_low++; |
| |
| result = mi_apply_ext_lang_frame_filter (get_current_frame (), flags, |
| print_values, current_uiout, |
| py_frame_low, frame_high); |
| } |
| |
| /* Run the inbuilt backtrace if there are no filters registered, or |
| if "--no-frame-filters" has been specified from the command. */ |
| if (! frame_filters || raw_arg || result == EXT_LANG_BT_NO_FILTERS) |
| { |
| /* Now let's print the frames up to frame_high, or until there are |
| frames in the stack. */ |
| for (; |
| fi && (i <= frame_high || frame_high == -1); |
| i++, fi = get_prev_frame (fi)) |
| { |
| QUIT; |
| ui_out_emit_tuple tuple_emitter (uiout, "frame"); |
| uiout->field_signed ("level", i); |
| list_args_or_locals (user_frame_print_options, |
| arguments, print_values, fi, skip_unavailable); |
| } |
| } |
| } |
| |
| /* Print a list of the local variables (including arguments) for the |
| current frame. ARGC must be 1 and ARGV[0] specify if only the names, |
| or both names and values of the variables must be printed. See |
| parse_print_value for possible values. */ |
| |
| void |
| mi_cmd_stack_list_variables (const char *command, const char *const *argv, |
| int argc) |
| { |
| frame_info_ptr frame; |
| int raw_arg = 0; |
| enum ext_lang_bt_status result = EXT_LANG_BT_ERROR; |
| enum print_values print_value; |
| int oind = 0; |
| int skip_unavailable = 0; |
| |
| if (argc > 1) |
| { |
| enum opt |
| { |
| NO_FRAME_FILTERS, |
| SKIP_UNAVAILABLE, |
| }; |
| static const struct mi_opt opts[] = |
| { |
| {"-no-frame-filters", NO_FRAME_FILTERS, 0}, |
| {"-skip-unavailable", SKIP_UNAVAILABLE, 0}, |
| { 0, 0, 0 } |
| }; |
| |
| while (1) |
| { |
| const char *oarg; |
| /* Don't parse 'print-values' as an option. */ |
| int opt = mi_getopt ("-stack-list-variables", argc - 1, |
| argv, opts, &oind, &oarg); |
| if (opt < 0) |
| break; |
| switch ((enum opt) opt) |
| { |
| case NO_FRAME_FILTERS: |
| raw_arg = oind; |
| break; |
| case SKIP_UNAVAILABLE: |
| skip_unavailable = 1; |
| break; |
| } |
| } |
| } |
| |
| /* After the last option is parsed, there should be only |
| 'print-values'. */ |
| if (argc - oind != 1) |
| error (_("-stack-list-variables: Usage: [--no-frame-filters] " \ |
| "[--skip-unavailable] PRINT_VALUES")); |
| |
| frame = get_selected_frame (NULL); |
| print_value = mi_parse_print_values (argv[oind]); |
| |
| if (! raw_arg && frame_filters) |
| { |
| frame_filter_flags flags = PRINT_LEVEL | PRINT_ARGS | PRINT_LOCALS; |
| if (user_frame_print_options.print_raw_frame_arguments) |
| flags |= PRINT_RAW_FRAME_ARGUMENTS; |
| |
| result = mi_apply_ext_lang_frame_filter (frame, flags, |
| print_value, |
| current_uiout, 0, 0); |
| } |
| |
| /* Run the inbuilt backtrace if there are no filters registered, or |
| if "--no-frame-filters" has been specified from the command. */ |
| if (! frame_filters || raw_arg || result == EXT_LANG_BT_NO_FILTERS) |
| { |
| list_args_or_locals (user_frame_print_options, |
| all, print_value, frame, |
| skip_unavailable); |
| } |
| } |
| |
| /* Print single local or argument. ARG must be already read in. For |
| WHAT and VALUES see list_args_or_locals. |
| |
| Errors are printed as if they would be the parameter value. Use |
| zeroed ARG iff it should not be printed according to VALUES. If |
| SKIP_UNAVAILABLE is true, only print ARG if it is available. */ |
| |
| static void |
| list_arg_or_local (const struct frame_arg *arg, enum what_to_list what, |
| enum print_values values, int skip_unavailable, |
| const frame_print_options &fp_opts) |
| { |
| struct ui_out *uiout = current_uiout; |
| |
| gdb_assert (!arg->val || !arg->error); |
| gdb_assert ((values == PRINT_NO_VALUES && arg->val == NULL |
| && arg->error == NULL) |
| || values == PRINT_SIMPLE_VALUES |
| || (values == PRINT_ALL_VALUES |
| && (arg->val != NULL || arg->error != NULL))); |
| gdb_assert (arg->entry_kind == print_entry_values_no |
| || (arg->entry_kind == print_entry_values_only |
| && (arg->val || arg->error))); |
| |
| if (skip_unavailable && arg->val != NULL |
| && (arg->val->entirely_unavailable () |
| /* A scalar object that does not have all bits available is |
| also considered unavailable, because all bits contribute |
| to its representation. */ |
| || (val_print_scalar_type_p (arg->val->type ()) |
| && !arg->val->bytes_available (arg->val->embedded_offset (), |
| arg->val->type ()->length ())))) |
| return; |
| |
| std::optional<ui_out_emit_tuple> tuple_emitter; |
| if (values != PRINT_NO_VALUES || what == all) |
| tuple_emitter.emplace (uiout, nullptr); |
| |
| string_file stb; |
| |
| stb.puts (arg->sym->print_name ()); |
| if (arg->entry_kind == print_entry_values_only) |
| stb.puts ("@entry"); |
| uiout->field_stream ("name", stb); |
| |
| if (what == all && arg->sym->is_argument ()) |
| uiout->field_signed ("arg", 1); |
| |
| if (values == PRINT_SIMPLE_VALUES) |
| { |
| check_typedef (arg->sym->type ()); |
| type_print (arg->sym->type (), "", &stb, -1); |
| uiout->field_stream ("type", stb); |
| } |
| |
| if (arg->val || arg->error) |
| { |
| if (arg->error) |
| stb.printf (_("<error reading variable: %s>"), arg->error.get ()); |
| else |
| { |
| try |
| { |
| struct value_print_options opts; |
| |
| get_no_prettyformat_print_options (&opts); |
| opts.deref_ref = true; |
| if (arg->sym->is_argument ()) |
| opts.raw = fp_opts.print_raw_frame_arguments; |
| common_val_print (arg->val, &stb, 0, &opts, |
| language_def (arg->sym->language ())); |
| } |
| catch (const gdb_exception_error &except) |
| { |
| stb.printf (_("<error reading variable: %s>"), |
| except.what ()); |
| } |
| } |
| uiout->field_stream ("value", stb); |
| } |
| } |
| |
| /* Print a list of the objects for the frame FI in a certain form, |
| which is determined by VALUES. The objects can be locals, |
| arguments or both, which is determined by WHAT. If SKIP_UNAVAILABLE |
| is true, only print the arguments or local variables whose values |
| are available. */ |
| |
| static void |
| list_args_or_locals (const frame_print_options &fp_opts, |
| enum what_to_list what, enum print_values values, |
| const frame_info_ptr &fi, int skip_unavailable) |
| { |
| const struct block *block; |
| const char *name_of_result; |
| struct ui_out *uiout = current_uiout; |
| |
| block = get_frame_block (fi, 0); |
| |
| switch (what) |
| { |
| case locals: |
| name_of_result = "locals"; |
| break; |
| case arguments: |
| name_of_result = "args"; |
| break; |
| case all: |
| name_of_result = "variables"; |
| break; |
| default: |
| internal_error ("unexpected what_to_list: %d", (int) what); |
| } |
| |
| ui_out_emit_list list_emitter (uiout, name_of_result); |
| |
| while (block != 0) |
| { |
| for (struct symbol *sym : block_iterator_range (block)) |
| { |
| int print_me = 0; |
| |
| switch (sym->aclass ()) |
| { |
| default: |
| case LOC_UNDEF: /* catches errors */ |
| case LOC_CONST: /* constant */ |
| case LOC_TYPEDEF: /* local typedef */ |
| case LOC_LABEL: /* local label */ |
| case LOC_BLOCK: /* local function */ |
| case LOC_CONST_BYTES: /* loc. byte seq. */ |
| case LOC_UNRESOLVED: /* unresolved static */ |
| case LOC_OPTIMIZED_OUT: /* optimized out */ |
| print_me = 0; |
| break; |
| |
| case LOC_ARG: /* argument */ |
| case LOC_REF_ARG: /* reference arg */ |
| case LOC_REGPARM_ADDR: /* indirect register arg */ |
| case LOC_LOCAL: /* stack local */ |
| case LOC_STATIC: /* static */ |
| case LOC_REGISTER: /* register */ |
| case LOC_COMPUTED: /* computed location */ |
| if (what == all) |
| print_me = 1; |
| else if (what == locals) |
| print_me = !sym->is_argument (); |
| else |
| print_me = sym->is_argument (); |
| break; |
| } |
| if (print_me) |
| { |
| struct symbol *sym2; |
| struct frame_arg arg, entryarg; |
| |
| if (sym->is_argument ()) |
| sym2 = (lookup_symbol_search_name |
| (sym->search_name (), |
| block, SEARCH_VAR_DOMAIN).symbol); |
| else |
| sym2 = sym; |
| gdb_assert (sym2 != NULL); |
| |
| arg.sym = sym2; |
| arg.entry_kind = print_entry_values_no; |
| entryarg.sym = sym2; |
| entryarg.entry_kind = print_entry_values_no; |
| |
| switch (values) |
| { |
| case PRINT_SIMPLE_VALUES: |
| if (!mi_simple_type_p (sym2->type ())) |
| break; |
| [[fallthrough]]; |
| |
| case PRINT_ALL_VALUES: |
| if (sym->is_argument ()) |
| read_frame_arg (fp_opts, sym2, fi, &arg, &entryarg); |
| else |
| read_frame_local (sym2, fi, &arg); |
| break; |
| } |
| |
| if (arg.entry_kind != print_entry_values_only) |
| list_arg_or_local (&arg, what, values, skip_unavailable, |
| fp_opts); |
| if (entryarg.entry_kind != print_entry_values_no) |
| list_arg_or_local (&entryarg, what, values, skip_unavailable, |
| fp_opts); |
| } |
| } |
| |
| if (block->function ()) |
| break; |
| else |
| block = block->superblock (); |
| } |
| } |
| |
| /* Read a frame specification from FRAME_EXP and return the selected frame. |
| Call error() if the specification is in any way invalid (so this |
| function never returns NULL). |
| |
| The frame specification is usually an integer level number, however if |
| the number does not match a valid frame level then it will be treated as |
| a frame address. The frame address will then be used to find a matching |
| frame in the stack. If no matching frame is found then a new frame will |
| be created. |
| |
| The use of FRAME_EXP as an address is undocumented in the GDB user |
| manual, this feature is supported here purely for backward |
| compatibility. */ |
| |
| static frame_info_ptr |
| parse_frame_specification (const char *frame_exp) |
| { |
| gdb_assert (frame_exp != NULL); |
| |
| /* NOTE: Parse and evaluate expression, but do not use |
| functions such as parse_and_eval_long or |
| parse_and_eval_address to also extract the value. |
| Instead value_as_long and value_as_address are used. |
| This avoids problems with expressions that contain |
| side-effects. */ |
| struct value *arg = parse_and_eval (frame_exp); |
| |
| /* Assume ARG is an integer, and try using that to select a frame. */ |
| frame_info_ptr fid; |
| int level = value_as_long (arg); |
| |
| fid = find_relative_frame (get_current_frame (), &level); |
| if (level == 0) |
| /* find_relative_frame was successful. */ |
| return fid; |
| |
| /* Convert the value into a corresponding address. */ |
| CORE_ADDR addr = value_as_address (arg); |
| |
| /* Assume that ADDR is an address, use that to identify a frame with a |
| matching ID. */ |
| struct frame_id id = frame_id_build_wild (addr); |
| |
| /* If (s)he specifies the frame with an address, he deserves |
| what (s)he gets. Still, give the highest one that matches. |
| (NOTE: cagney/2004-10-29: Why highest, or outer-most, I don't |
| know). */ |
| for (fid = get_current_frame (); |
| fid != NULL; |
| fid = get_prev_frame (fid)) |
| { |
| if (id == get_frame_id (fid)) |
| { |
| frame_info_ptr prev_frame; |
| |
| while (1) |
| { |
| prev_frame = get_prev_frame (fid); |
| if (!prev_frame |
| || id != get_frame_id (prev_frame)) |
| break; |
| fid = prev_frame; |
| } |
| return fid; |
| } |
| } |
| |
| /* We couldn't identify the frame as an existing frame, but |
| perhaps we can create one with a single argument. */ |
| return create_new_frame (addr, 0); |
| } |
| |
| /* Implement the -stack-select-frame MI command. */ |
| |
| void |
| mi_cmd_stack_select_frame (const char *command, const char *const *argv, |
| int argc) |
| { |
| if (argc == 0 || argc > 1) |
| error (_("-stack-select-frame: Usage: FRAME_SPEC")); |
| select_frame (parse_frame_specification (argv[0])); |
| } |
| |
| void |
| mi_cmd_stack_info_frame (const char *command, const char *const *argv, |
| int argc) |
| { |
| if (argc > 0) |
| error (_("-stack-info-frame: No arguments allowed")); |
| |
| print_frame_info (user_frame_print_options, |
| get_selected_frame (NULL), 1, LOC_AND_ADDRESS, 0, 1); |
| } |