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[RFA 2/3] Ada: allow unqualified function names in linespecs
- From: Joel Brobecker <brobecker at adacore dot com>
- To: gdb-patches at sourceware dot org
- Cc: Joel Brobecker <brobecker at adacore dot com>
- Date: Fri, 23 Dec 2011 14:38:12 +0400
- Subject: [RFA 2/3] Ada: allow unqualified function names in linespecs
- References: <20111221140128.GK23376@adacore.com>
This is the meat, where we replace the old la_symbol_name_compare
language method with the new ada_get_symbol_name_match_p.
It fixes the problem when trying to insert a breakpoint on "+".
gdb/ChangeLog:
* language.h (symbol_name_match_p_ftype): New typedef.
(struct language_defn): Replace field la_symbol_name_compare
by la_get_symbol_name_match_p.
* ada-lang.c (ada_get_symbol_name_match_p): New function.
(ada_language_defn): Use it.
* linespec.c (struct symbol_matcher_data): New type.
(iterate_name_matcher): Rewrite.
(iterate_over_all_matching_symtabs): Pass a pointer to
a symbol_matcher_data struct to expand_symtabs_matching
instead of just the lookup name.
* c-lang.c, d-lang.c, jv-lang.c, m2-lang.c, objc-lang.c,
opencl-lang.c, p-lang.c, language.c: Delete field
la_symbol_name_compare, and replace by NULL for new field
la_get_symbol_name_match_p.
* symfile.h (struct quick_symbol_functions): Update comment.
OK to commit?
Thanks,
--
Joel
---
gdb/ada-lang.c | 14 +++++++++++++-
gdb/c-lang.c | 8 ++++----
gdb/d-lang.c | 2 +-
gdb/f-lang.c | 2 +-
gdb/jv-lang.c | 2 +-
gdb/language.c | 6 +++---
gdb/language.h | 29 +++++++++++++++++------------
gdb/linespec.c | 24 +++++++++++++++++++++---
gdb/m2-lang.c | 2 +-
gdb/objc-lang.c | 2 +-
gdb/opencl-lang.c | 2 +-
gdb/p-lang.c | 2 +-
gdb/symfile.h | 8 +++-----
13 files changed, 68 insertions(+), 35 deletions(-)
diff --git a/gdb/ada-lang.c b/gdb/ada-lang.c
index 09ab38d..d871193 100644
--- a/gdb/ada-lang.c
+++ b/gdb/ada-lang.c
@@ -12385,6 +12385,18 @@ static const struct exp_descriptor ada_exp_descriptor = {
ada_evaluate_subexp
};
+/* Implement the "la_get_symbol_name_match_p" language_defn method
+ for Ada. */
+
+static symbol_name_match_p_ftype
+ada_get_symbol_name_match_p (const char *lookup_name)
+{
+ if (should_use_wild_match (lookup_name))
+ return wild_match;
+ else
+ return compare_names;
+}
+
const struct language_defn ada_language_defn = {
"ada", /* Language name */
language_ada,
@@ -12421,7 +12433,7 @@ const struct language_defn ada_language_defn = {
ada_print_array_index,
default_pass_by_reference,
c_get_string,
- compare_names,
+ ada_get_symbol_name_match_p, /* la_get_symbol_name_match_p */
ada_iterate_over_symbols,
LANG_MAGIC
};
diff --git a/gdb/c-lang.c b/gdb/c-lang.c
index 7be916c..1545d08 100644
--- a/gdb/c-lang.c
+++ b/gdb/c-lang.c
@@ -863,7 +863,7 @@ const struct language_defn c_language_defn =
default_print_array_index,
default_pass_by_reference,
c_get_string,
- strcmp_iw_ordered,
+ NULL, /* la_get_symbol_name_match_p */
iterate_over_symbols,
LANG_MAGIC
};
@@ -986,7 +986,7 @@ const struct language_defn cplus_language_defn =
default_print_array_index,
cp_pass_by_reference,
c_get_string,
- strcmp_iw_ordered,
+ NULL, /* la_get_symbol_name_match_p */
iterate_over_symbols,
LANG_MAGIC
};
@@ -1027,7 +1027,7 @@ const struct language_defn asm_language_defn =
default_print_array_index,
default_pass_by_reference,
c_get_string,
- strcmp_iw_ordered,
+ NULL, /* la_get_symbol_name_match_p */
iterate_over_symbols,
LANG_MAGIC
};
@@ -1073,7 +1073,7 @@ const struct language_defn minimal_language_defn =
default_print_array_index,
default_pass_by_reference,
c_get_string,
- strcmp_iw_ordered,
+ NULL, /* la_get_symbol_name_match_p */
iterate_over_symbols,
LANG_MAGIC
};
diff --git a/gdb/d-lang.c b/gdb/d-lang.c
index fb6bacd..0af328d 100644
--- a/gdb/d-lang.c
+++ b/gdb/d-lang.c
@@ -273,7 +273,7 @@ static const struct language_defn d_language_defn =
default_print_array_index,
default_pass_by_reference,
c_get_string,
- strcmp_iw_ordered,
+ NULL, /* la_get_symbol_name_match_p */
NULL,
LANG_MAGIC
};
diff --git a/gdb/f-lang.c b/gdb/f-lang.c
index 00926fb..ab8fcca 100644
--- a/gdb/f-lang.c
+++ b/gdb/f-lang.c
@@ -309,7 +309,7 @@ const struct language_defn f_language_defn =
default_print_array_index,
default_pass_by_reference,
default_get_string,
- strcmp_iw_ordered,
+ NULL, /* la_get_symbol_name_match_p */
iterate_over_symbols,
LANG_MAGIC
};
diff --git a/gdb/jv-lang.c b/gdb/jv-lang.c
index 80fe4a1..2504151 100644
--- a/gdb/jv-lang.c
+++ b/gdb/jv-lang.c
@@ -1197,7 +1197,7 @@ const struct language_defn java_language_defn =
default_print_array_index,
default_pass_by_reference,
default_get_string,
- strcmp_iw_ordered,
+ NULL, /* la_get_symbol_name_match_p */
iterate_over_symbols,
LANG_MAGIC
};
diff --git a/gdb/language.c b/gdb/language.c
index 1bbbfba..739c79e 100644
--- a/gdb/language.c
+++ b/gdb/language.c
@@ -1200,7 +1200,7 @@ const struct language_defn unknown_language_defn =
default_print_array_index,
default_pass_by_reference,
default_get_string,
- strcmp_iw_ordered,
+ NULL, /* la_get_symbol_name_match_p */
iterate_over_symbols,
LANG_MAGIC
};
@@ -1243,7 +1243,7 @@ const struct language_defn auto_language_defn =
default_print_array_index,
default_pass_by_reference,
default_get_string,
- strcmp_iw_ordered,
+ NULL, /* la_get_symbol_name_match_p */
iterate_over_symbols,
LANG_MAGIC
};
@@ -1284,7 +1284,7 @@ const struct language_defn local_language_defn =
default_print_array_index,
default_pass_by_reference,
default_get_string,
- strcmp_iw_ordered,
+ NULL, /* la_get_symbol_name_match_p */
iterate_over_symbols,
LANG_MAGIC
};
diff --git a/gdb/language.h b/gdb/language.h
index 65d55db..da25ed8 100644
--- a/gdb/language.h
+++ b/gdb/language.h
@@ -136,6 +136,16 @@ struct language_arch_info
struct type *bool_type_default;
};
+/* A pointer to a function expected to return nonzero if
+ SYMBOL_SEARCH_NAME matches the given LOOKUP_NAME.
+
+ SYMBOL_SEARCH_NAME should be a symbol's "search" name.
+ LOOKUP_NAME should be the name of an entity after it has been
+ transformed for lookup. */
+
+typedef int (*symbol_name_match_p_ftype) (const char *symbol_search_name,
+ const char *lookup_name);
+
/* Structure tying together assorted information about a language. */
struct language_defn
@@ -318,19 +328,14 @@ struct language_defn
void (*la_get_string) (struct value *value, gdb_byte **buffer, int *length,
struct type **chartype, const char **charset);
- /* Compare two symbol names according to language rules. For
- instance, in C++, we might want to ignore whitespaces in
- the symbol name. Or some case-insensitive language might
- want to ignore casing during the match.
-
- Both STR1 and STR2 are expected to be demangled name, except
- for Ada, where STR1 and STR2 are expected to be encoded names.
- The latter is because searches are performed using the encoded
- name in Ada.
-
- The return value follows the same spirit as strcmp. */
+ /* Return a pointer to the function that should be used to match
+ a symbol name against LOOKUP_NAME. This is mostly for languages
+ such as Ada where the matching algorithm depends on LOOKUP_NAME.
- int (*la_symbol_name_compare) (const char *str1, const char *str2);
+ This field may be NULL, in which case strcmp_iw will be used
+ to perform the matching. */
+ symbol_name_match_p_ftype (*la_get_symbol_name_match_p)
+ (const char *lookup_name);
/* Find all symbols in the current program space matching NAME in
DOMAIN, according to this language's rules.
diff --git a/gdb/linespec.c b/gdb/linespec.c
index 9d753e5..6f463a4 100644
--- a/gdb/linespec.c
+++ b/gdb/linespec.c
@@ -323,6 +323,17 @@ cplusplus_error (const char *name, const char *fmt, ...)
throw_error (NOT_FOUND_ERROR, "%s", message);
}
+/* Some data for the expand_symtabs_matching callback. */
+
+struct symbol_matcher_data
+{
+ /* The lookup name against which symbol name should be compared. */
+ const char *lookup_name;
+
+ /* The routine to be used for comparison. */
+ symbol_name_match_p_ftype symbol_name_match_p;
+};
+
/* A helper for iterate_over_all_matching_symtabs that is passed as a
callback to the expand_symtabs_matching method. */
@@ -330,9 +341,9 @@ static int
iterate_name_matcher (const struct language_defn *language,
const char *name, void *d)
{
- const char **dname = d;
+ const struct symbol_matcher_data *data = d;
- if (language->la_symbol_name_compare (name, *dname) == 0)
+ if (data->symbol_name_match_p (name, data->lookup_name))
return 1;
return 0;
}
@@ -351,6 +362,13 @@ iterate_over_all_matching_symtabs (const char *name,
{
struct objfile *objfile;
struct program_space *pspace;
+ struct symbol_matcher_data matcher_data;
+
+ matcher_data.lookup_name = name;
+ matcher_data.symbol_name_match_p =
+ current_language->la_get_symbol_name_match_p != NULL
+ ? current_language->la_get_symbol_name_match_p (name)
+ : strcmp_iw;
ALL_PSPACES (pspace)
{
@@ -369,7 +387,7 @@ iterate_over_all_matching_symtabs (const char *name,
objfile->sf->qf->expand_symtabs_matching (objfile, NULL,
iterate_name_matcher,
ALL_DOMAIN,
- &name);
+ &matcher_data);
ALL_OBJFILE_SYMTABS (objfile, symtab)
{
diff --git a/gdb/m2-lang.c b/gdb/m2-lang.c
index c850b1f..f572f54 100644
--- a/gdb/m2-lang.c
+++ b/gdb/m2-lang.c
@@ -401,7 +401,7 @@ const struct language_defn m2_language_defn =
default_print_array_index,
default_pass_by_reference,
default_get_string,
- strcmp_iw_ordered,
+ NULL, /* la_get_symbol_name_match_p */
iterate_over_symbols,
LANG_MAGIC
};
diff --git a/gdb/objc-lang.c b/gdb/objc-lang.c
index cb7fa0e..3c8c0cb 100644
--- a/gdb/objc-lang.c
+++ b/gdb/objc-lang.c
@@ -541,7 +541,7 @@ const struct language_defn objc_language_defn = {
default_print_array_index,
default_pass_by_reference,
default_get_string,
- strcmp_iw_ordered,
+ NULL, /* la_get_symbol_name_match_p */
iterate_over_symbols,
LANG_MAGIC
};
diff --git a/gdb/opencl-lang.c b/gdb/opencl-lang.c
index 1deb9d8..afde3b4 100644
--- a/gdb/opencl-lang.c
+++ b/gdb/opencl-lang.c
@@ -1024,7 +1024,7 @@ const struct language_defn opencl_language_defn =
default_print_array_index,
default_pass_by_reference,
c_get_string,
- strcmp_iw_ordered,
+ NULL, /* la_get_symbol_name_match_p */
iterate_over_symbols,
LANG_MAGIC
};
diff --git a/gdb/p-lang.c b/gdb/p-lang.c
index f66d471..e633582 100644
--- a/gdb/p-lang.c
+++ b/gdb/p-lang.c
@@ -459,7 +459,7 @@ const struct language_defn pascal_language_defn =
default_print_array_index,
default_pass_by_reference,
default_get_string,
- strcmp_iw_ordered,
+ NULL, /* la_get_symbol_name_match_p */
iterate_over_symbols,
LANG_MAGIC
};
diff --git a/gdb/symfile.h b/gdb/symfile.h
index 91605a2..ef1ca24 100644
--- a/gdb/symfile.h
+++ b/gdb/symfile.h
@@ -260,12 +260,10 @@ struct quick_symbol_functions
file is skipped. If FILE_MATCHER is NULL such file is not skipped.
Otherwise, if KIND does not match this symbol is skipped.
-
+
If even KIND matches, then NAME_MATCHER is called for each symbol
- defined in the file. The current language, the symbol name and
- DATA are passed to NAME_MATCHER. The symbol "search" name should
- be passed to NAME_MATCHER (see la_symbol_name_compare in struct
- language_defn for more details on this).
+ defined in the file. The current language, the symbol "search"
+ name and DATA are passed to NAME_MATCHER.
If NAME_MATCHER returns zero, then this symbol is skipped.
--
1.7.1