gdb: get_frame_language now takes a frame parameter.
As part of a drive to remove deprecated_safe_get_selected_frame, make the get_frame_language function take a frame parameter. Given the name of the function this actually seems to make a lot of sense. The task of fetching a suitable frame is then passed to the calling functions. For get_frame_language there are not many callers, these are updated to get the selected frame in a suitable way. gdb/ChangeLog: * language.c (show_language_command): Find selected frame before asking for the language of that frame. (set_language_command): Likewise. * language.h (get_frame_language): Add frame parameter. * stack.c (get_frame_language): Add frame parameter, assert parameter is not NULL, update comment and reindent. * top.c (check_frame_language_change): Pass the selected frame into get_frame_language.
This commit is contained in:
Andrew Burgess
parent
0b45135ec1
commit
7ff38b1c89
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@ -1,3 +1,14 @@
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2015-08-07 Andrew Burgess <andrew.burgess@embecosm.com>
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* language.c (show_language_command): Find selected frame before
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asking for the language of that frame.
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(set_language_command): Likewise.
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* language.h (get_frame_language): Add frame parameter.
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* stack.c (get_frame_language): Add frame parameter, assert
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parameter is not NULL, update comment and reindent.
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* top.c (check_frame_language_change): Pass the selected frame
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into get_frame_language.
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2015-08-07 Markus Metzger <markus.t.metzger@intel.com>
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* btrace.c (btrace_compute_ftrace_bts): Clear insn flags.
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@ -118,7 +118,7 @@ static void
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show_language_command (struct ui_file *file, int from_tty,
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struct cmd_list_element *c, const char *value)
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{
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enum language flang; /* The language of the current frame. */
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enum language flang; /* The language of the frame. */
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if (language_mode == language_mode_auto)
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fprintf_filtered (gdb_stdout,
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@ -130,11 +130,17 @@ show_language_command (struct ui_file *file, int from_tty,
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_("The current source language is \"%s\".\n"),
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current_language->la_name);
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flang = get_frame_language ();
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if (flang != language_unknown &&
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language_mode == language_mode_manual &&
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current_language->la_language != flang)
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printf_filtered ("%s\n", lang_frame_mismatch_warn);
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if (has_stack_frames ())
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{
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struct frame_info *frame;
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frame = get_selected_frame (NULL);
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flang = get_frame_language (frame);
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if (flang != language_unknown
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&& language_mode == language_mode_manual
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&& current_language->la_language != flang)
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printf_filtered ("%s\n", lang_frame_mismatch_warn);
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}
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}
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/* Set command. Change the current working language. */
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@ -142,7 +148,7 @@ static void
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set_language_command (char *ignore, int from_tty, struct cmd_list_element *c)
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{
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int i;
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enum language flang;
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enum language flang = language_unknown;
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/* Search the list of languages for a match. */
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for (i = 0; i < languages_size; i++)
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@ -155,7 +161,19 @@ set_language_command (char *ignore, int from_tty, struct cmd_list_element *c)
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/* Enter auto mode. Set to the current frame's language, if
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known, or fallback to the initial language. */
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language_mode = language_mode_auto;
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flang = get_frame_language ();
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TRY
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{
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struct frame_info *frame;
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frame = get_selected_frame (NULL);
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flang = get_frame_language (frame);
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}
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CATCH (ex, RETURN_MASK_ERROR)
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{
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flang = language_unknown;
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}
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END_CATCH
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if (flang != language_unknown)
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set_language (flang);
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else
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@ -544,7 +544,7 @@ extern const char *language_str (enum language);
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extern void add_language (const struct language_defn *);
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extern enum language get_frame_language (void); /* In stack.c */
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extern enum language get_frame_language (struct frame_info *frame); /* In stack.c */
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/* Check for a language-specific trampoline. */
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63
gdb/stack.c
63
gdb/stack.c
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@ -2560,46 +2560,43 @@ func_command (char *arg, int from_tty)
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select_and_print_frame (frame);
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}
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/* Gets the language of the current frame. */
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/* Gets the language of FRAME. */
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enum language
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get_frame_language (void)
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get_frame_language (struct frame_info *frame)
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{
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struct frame_info *frame = deprecated_safe_get_selected_frame ();
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CORE_ADDR pc = 0;
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int pc_p = 0;
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if (frame)
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gdb_assert (frame!= NULL);
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/* We determine the current frame language by looking up its
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associated symtab. To retrieve this symtab, we use the frame
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PC. However we cannot use the frame PC as is, because it
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usually points to the instruction following the "call", which
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is sometimes the first instruction of another function. So
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we rely on get_frame_address_in_block(), it provides us with
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a PC that is guaranteed to be inside the frame's code
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block. */
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TRY
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{
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CORE_ADDR pc = 0;
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int pc_p = 0;
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pc = get_frame_address_in_block (frame);
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pc_p = 1;
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}
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CATCH (ex, RETURN_MASK_ERROR)
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{
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if (ex.error != NOT_AVAILABLE_ERROR)
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throw_exception (ex);
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}
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END_CATCH
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/* We determine the current frame language by looking up its
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associated symtab. To retrieve this symtab, we use the frame
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PC. However we cannot use the frame PC as is, because it
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usually points to the instruction following the "call", which
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is sometimes the first instruction of another function. So
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we rely on get_frame_address_in_block(), it provides us with
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a PC that is guaranteed to be inside the frame's code
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block. */
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if (pc_p)
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{
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struct compunit_symtab *cust = find_pc_compunit_symtab (pc);
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TRY
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{
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pc = get_frame_address_in_block (frame);
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pc_p = 1;
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}
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CATCH (ex, RETURN_MASK_ERROR)
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{
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if (ex.error != NOT_AVAILABLE_ERROR)
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throw_exception (ex);
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}
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END_CATCH
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if (pc_p)
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{
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struct compunit_symtab *cust = find_pc_compunit_symtab (pc);
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if (cust != NULL)
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return compunit_language (cust);
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}
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if (cust != NULL)
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return compunit_language (cust);
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}
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return language_unknown;
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@ -329,10 +329,11 @@ void
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check_frame_language_change (void)
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{
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static int warned = 0;
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struct frame_info *frame;
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/* First make sure that a new frame has been selected, in case the
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command or the hooks changed the program state. */
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deprecated_safe_get_selected_frame ();
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frame = deprecated_safe_get_selected_frame ();
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if (current_language != expected_language)
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{
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if (language_mode == language_mode_auto && info_verbose)
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@ -352,7 +353,7 @@ check_frame_language_change (void)
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{
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enum language flang;
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flang = get_frame_language ();
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flang = get_frame_language (frame);
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if (!warned
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&& flang != language_unknown
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&& flang != current_language->la_language)
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