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2003-05-19 David Carlton <carlton@bactrian.org>
* language.h (struct language_defn): Add 'la_value_of_this' and 'la_lookup_symbol_nonlocal' members. * symtab.h: Declare basic_lookup_symbol_nonlocal, lookup_symbol_static, lookup_symbol_global, lookup_symbol_aux_block. * symtab.c (lookup_symbol_aux): Call language hooks to determine if we should search fields of this and how to do static/global lookup. (lookup_symbol_aux_block): Make extern. (basic_lookup_symbol_nonlocal): New. (lookup_symbol_static, lookup_symbol_global): Ditto. * ada-lang.c (ada_language_defn): Set 'la_value_of_this' and 'la_lookup_symbol_nonlocal' members. * c-lang.c (c_language_defn, cplus_language_defn) (asm_language_defn, minimal_language_defn): Ditto. * jv-lang.c (java_language_defn): Ditto. * language.c (unknown_language_defn, auto_language_defn) (local_language_defn): Ditto. * m2-lang.c (m2_language_defn): Ditto. * objc-lang.c (objc_language_defn): Ditto. * scm-lang.c (scm_language_defn): Ditto. * f-lang.c (f_language_defn): Ditto, and include value.h as well. * p-lang.c (pascal_language_defn): Ditto for both. * Makefile.in (f-lang.o): Depend on value_h. (p-lang.o): Ditto.
This commit is contained in:
David Carlton
parent
89a9d1b163
commit
5f9a71c3d7
@ -1,3 +1,31 @@
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2003-05-19 David Carlton <carlton@bactrian.org>
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* language.h (struct language_defn): Add 'la_value_of_this'
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and 'la_lookup_symbol_nonlocal' members.
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* symtab.h: Declare basic_lookup_symbol_nonlocal,
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lookup_symbol_static, lookup_symbol_global,
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lookup_symbol_aux_block.
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* symtab.c (lookup_symbol_aux): Call language hooks to determine
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if we should search fields of this and how to do static/global
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lookup.
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(lookup_symbol_aux_block): Make extern.
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(basic_lookup_symbol_nonlocal): New.
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(lookup_symbol_static, lookup_symbol_global): Ditto.
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* ada-lang.c (ada_language_defn): Set 'la_value_of_this' and
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'la_lookup_symbol_nonlocal' members.
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* c-lang.c (c_language_defn, cplus_language_defn)
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(asm_language_defn, minimal_language_defn): Ditto.
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* jv-lang.c (java_language_defn): Ditto.
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* language.c (unknown_language_defn, auto_language_defn)
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(local_language_defn): Ditto.
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* m2-lang.c (m2_language_defn): Ditto.
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* objc-lang.c (objc_language_defn): Ditto.
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* scm-lang.c (scm_language_defn): Ditto.
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* f-lang.c (f_language_defn): Ditto, and include value.h as well.
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* p-lang.c (pascal_language_defn): Ditto for both.
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* Makefile.in (f-lang.o): Depend on value_h.
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(p-lang.o): Ditto.
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2003-05-19 David Carlton <carlton@bactrian.org>
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* block.h: Declare block_static_block.
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@ -1703,7 +1703,7 @@ expprint.o: expprint.c $(defs_h) $(symtab_h) $(gdbtypes_h) $(expression_h) \
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$(block_h)
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f-lang.o: f-lang.c $(defs_h) $(gdb_string_h) $(symtab_h) $(gdbtypes_h) \
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$(expression_h) $(parser_defs_h) $(language_h) $(f_lang_h) \
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$(valprint_h)
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$(valprint_h) $(value_h)
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f-typeprint.o: f-typeprint.c $(defs_h) $(gdb_obstack_h) $(bfd_h) $(symtab_h) \
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$(gdbtypes_h) $(expression_h) $(value_h) $(gdbcore_h) $(target_h) \
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$(f_lang_h) $(gdb_string_h)
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@ -2022,7 +2022,7 @@ osabi.o: osabi.c $(defs_h) $(gdb_string_h) $(osabi_h) $(elf_bfd_h) \
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$(gdbcmd_h) $(command_h) $(arch_utils_h)
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p-lang.o: p-lang.c $(defs_h) $(gdb_string_h) $(symtab_h) $(gdbtypes_h) \
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$(expression_h) $(parser_defs_h) $(language_h) $(p_lang_h) \
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$(valprint_h)
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$(valprint_h) $(value_h)
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p-typeprint.o: p-typeprint.c $(defs_h) $(gdb_obstack_h) $(bfd_h) $(symtab_h) \
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$(gdbtypes_h) $(expression_h) $(value_h) $(gdbcore_h) $(target_h) \
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$(language_h) $(p_lang_h) $(typeprint_h) $(gdb_string_h)
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@ -8082,6 +8082,8 @@ const struct language_defn ada_language_defn = {
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ada_val_print, /* Print a value using appropriate syntax */
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ada_value_print, /* Print a top-level value */
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NULL, /* Language specific skip_trampoline */
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value_of_this, /* value_of_this */
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basic_lookup_symbol_nonlocal, /* lookup_symbol_nonlocal */
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NULL, /* Language specific symbol demangler */
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{"", "", "", ""}, /* Binary format info */
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#if 0
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@ -553,6 +553,8 @@ const struct language_defn c_language_defn =
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c_val_print, /* Print a value using appropriate syntax */
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c_value_print, /* Print a top-level value */
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NULL, /* Language specific skip_trampoline */
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NULL, /* value_of_this */
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basic_lookup_symbol_nonlocal, /* lookup_symbol_nonlocal */
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NULL, /* Language specific symbol demangler */
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{"", "", "", ""}, /* Binary format info */
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{"0%lo", "0", "o", ""}, /* Octal format info */
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@ -607,6 +609,8 @@ const struct language_defn cplus_language_defn =
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c_val_print, /* Print a value using appropriate syntax */
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c_value_print, /* Print a top-level value */
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NULL, /* Language specific skip_trampoline */
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value_of_this, /* value_of_this */
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basic_lookup_symbol_nonlocal, /* lookup_symbol_nonlocal */
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cplus_demangle, /* Language specific symbol demangler */
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{"", "", "", ""}, /* Binary format info */
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{"0%lo", "0", "o", ""}, /* Octal format info */
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@ -638,6 +642,8 @@ const struct language_defn asm_language_defn =
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c_val_print, /* Print a value using appropriate syntax */
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c_value_print, /* Print a top-level value */
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NULL, /* Language specific skip_trampoline */
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NULL, /* value_of_this */
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basic_lookup_symbol_nonlocal, /* lookup_symbol_nonlocal */
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NULL, /* Language specific symbol demangler */
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{"", "", "", ""}, /* Binary format info */
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{"0%lo", "0", "o", ""}, /* Octal format info */
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@ -674,6 +680,8 @@ const struct language_defn minimal_language_defn =
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c_val_print, /* Print a value using appropriate syntax */
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c_value_print, /* Print a top-level value */
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NULL, /* Language specific skip_trampoline */
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NULL, /* value_of_this */
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basic_lookup_symbol_nonlocal, /* lookup_symbol_nonlocal */
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NULL, /* Language specific symbol demangler */
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{"", "", "", ""}, /* Binary format info */
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{"0%lo", "0", "o", ""}, /* Octal format info */
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@ -30,6 +30,7 @@
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#include "language.h"
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#include "f-lang.h"
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#include "valprint.h"
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#include "value.h"
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/* The built-in types of F77. FIXME: integer*4 is missing, plain
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logical is missing (builtin_type_logical is logical*4). */
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@ -472,6 +473,8 @@ const struct language_defn f_language_defn =
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f_val_print, /* Print a value using appropriate syntax */
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c_value_print, /* FIXME */
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NULL, /* Language specific skip_trampoline */
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value_of_this, /* value_of_this */
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basic_lookup_symbol_nonlocal, /* lookup_symbol_nonlocal */
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NULL, /* Language specific symbol demangler */
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{"", "", "", ""}, /* Binary format info */
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{"0%o", "0", "o", ""}, /* Octal format info */
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@ -1063,6 +1063,8 @@ const struct language_defn java_language_defn =
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java_val_print, /* Print a value using appropriate syntax */
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java_value_print, /* Print a top-level value */
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NULL, /* Language specific skip_trampoline */
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value_of_this, /* value_of_this */
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basic_lookup_symbol_nonlocal, /* lookup_symbol_nonlocal */
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java_demangle, /* Language specific symbol demangler */
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{"", "", "", ""}, /* Binary format info */
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{"0%lo", "0", "o", ""}, /* Octal format info */
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@ -1479,6 +1479,8 @@ const struct language_defn unknown_language_defn =
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unk_lang_val_print, /* Print a value using appropriate syntax */
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unk_lang_value_print, /* Print a top-level value */
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unk_lang_trampoline, /* Language specific skip_trampoline */
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value_of_this, /* value_of_this */
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basic_lookup_symbol_nonlocal, /* lookup_symbol_nonlocal */
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unk_lang_demangle, /* Language specific symbol demangler */
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{"", "", "", ""}, /* Binary format info */
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{"0%lo", "0", "o", ""}, /* Octal format info */
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@ -1511,6 +1513,8 @@ const struct language_defn auto_language_defn =
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unk_lang_val_print, /* Print a value using appropriate syntax */
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unk_lang_value_print, /* Print a top-level value */
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unk_lang_trampoline, /* Language specific skip_trampoline */
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value_of_this, /* value_of_this */
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basic_lookup_symbol_nonlocal, /* lookup_symbol_nonlocal */
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unk_lang_demangle, /* Language specific symbol demangler */
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{"", "", "", ""}, /* Binary format info */
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{"0%lo", "0", "o", ""}, /* Octal format info */
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@ -1542,6 +1546,8 @@ const struct language_defn local_language_defn =
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unk_lang_val_print, /* Print a value using appropriate syntax */
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unk_lang_value_print, /* Print a top-level value */
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unk_lang_trampoline, /* Language specific skip_trampoline */
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value_of_this, /* value_of_this */
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basic_lookup_symbol_nonlocal, /* lookup_symbol_nonlocal */
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unk_lang_demangle, /* Language specific symbol demangler */
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{"", "", "", ""}, /* Binary format info */
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{"0%lo", "0", "o", ""}, /* Octal format info */
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@ -211,6 +211,27 @@ struct language_defn
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if it isn't a language tramp for this language. */
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CORE_ADDR (*skip_trampoline) (CORE_ADDR pc);
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/* Now come some hooks for lookup_symbol. */
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/* If this is non-NULL, lookup_symbol will do the 'field_of_this'
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check, using this function to find the value of this. */
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/* FIXME: carlton/2003-05-19: Audit all the language_defn structs
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to make sure we're setting this appropriately: I'm sure it
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could be NULL in more languages. */
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struct value *(*la_value_of_this) (int complain);
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/* This is a function that lookup_symbol will call when it gets to
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the part of symbol lookup where C looks up static and global
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variables. */
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struct symbol *(*la_lookup_symbol_nonlocal) (const char *,
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const char *,
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const struct block *,
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const domain_enum,
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struct symtab **);
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/* Return demangled language symbol, or NULL. */
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char *(*la_demangle) (const char *mangled, int options);
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@ -426,6 +426,8 @@ const struct language_defn m2_language_defn =
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m2_val_print, /* Print a value using appropriate syntax */
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c_value_print, /* Print a top-level value */
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NULL, /* Language specific skip_trampoline */
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value_of_this, /* value_of_this */
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basic_lookup_symbol_nonlocal, /* lookup_symbol_nonlocal */
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NULL, /* Language specific symbol demangler */
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{"", "", "", ""}, /* Binary format info */
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{"%loB", "", "o", "B"}, /* Octal format info */
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@ -701,6 +701,8 @@ const struct language_defn objc_language_defn = {
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c_val_print, /* Print a value using appropriate syntax */
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c_value_print, /* Print a top-level value */
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objc_skip_trampoline, /* Language specific skip_trampoline */
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value_of_this, /* value_of_this */
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basic_lookup_symbol_nonlocal, /* lookup_symbol_nonlocal */
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objc_demangle, /* Language specific symbol demangler */
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{"", "", "", ""}, /* Binary format info */
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{"0%lo", "0", "o", ""}, /* Octal format info */
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@ -28,6 +28,7 @@
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#include "language.h"
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#include "p-lang.h"
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#include "valprint.h"
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#include "value.h"
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#include <ctype.h>
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extern void _initialize_pascal_language (void);
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@ -461,6 +462,8 @@ const struct language_defn pascal_language_defn =
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pascal_val_print, /* Print a value using appropriate syntax */
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pascal_value_print, /* Print a top-level value */
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NULL, /* Language specific skip_trampoline */
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value_of_this, /* value_of_this */
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basic_lookup_symbol_nonlocal, /* lookup_symbol_nonlocal */
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NULL, /* Language specific symbol demangler */
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{"", "%", "b", ""}, /* Binary format info */
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{"0%lo", "0", "o", ""}, /* Octal format info */
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@ -252,6 +252,8 @@ const struct language_defn scm_language_defn =
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scm_val_print, /* Print a value using appropriate syntax */
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scm_value_print, /* Print a top-level value */
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NULL, /* Language specific skip_trampoline */
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value_of_this, /* value_of_this */
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basic_lookup_symbol_nonlocal, /* lookup_symbol_nonlocal */
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NULL, /* Language specific symbol demangler */
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{"", "", "", ""}, /* Binary format info */
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{"#o%lo", "#o", "o", ""}, /* Octal format info */
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156
gdb/symtab.c
156
gdb/symtab.c
@ -95,13 +95,6 @@ struct symbol *lookup_symbol_aux_local (const char *name,
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const domain_enum domain,
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struct symtab **symtab);
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static
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struct symbol *lookup_symbol_aux_block (const char *name,
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const char *linkage_name,
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const struct block *block,
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const domain_enum domain,
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struct symtab **symtab);
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static
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struct symbol *lookup_symbol_aux_symtabs (int block_index,
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const char *name,
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@ -957,7 +950,6 @@ lookup_symbol_aux (const char *name, const char *linkage_name,
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int *is_a_field_of_this, struct symtab **symtab)
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{
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struct symbol *sym;
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const struct block *static_block;
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/* Search specified block and its superiors. Don't search
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STATIC_BLOCK or GLOBAL_BLOCK. */
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@ -967,11 +959,13 @@ lookup_symbol_aux (const char *name, const char *linkage_name,
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if (sym != NULL)
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return sym;
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/* C++/Java/Objective-C: If requested to do so by the caller,
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check to see if NAME is a field of `this'. */
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if (is_a_field_of_this)
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/* If requested to do so by the caller and if appropriate for the
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current language, check to see if NAME is a field of `this'. */
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if (current_language->la_value_of_this != NULL
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&& is_a_field_of_this != NULL)
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{
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struct value *v = value_of_this (0);
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struct value *v = current_language->la_value_of_this (0);
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*is_a_field_of_this = 0;
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if (v && check_field (v, name))
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@ -983,51 +977,12 @@ lookup_symbol_aux (const char *name, const char *linkage_name,
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}
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}
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/* If there's a static block to search, search it next. */
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/* Now do whatever is appropriate for the current language to look
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up static and global variables. */
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/* NOTE: carlton/2002-12-05: There is a question as to whether or
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not it would be appropriate to search the current global block
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here as well. (That's what this code used to do before the
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is_a_field_of_this check was moved up.) On the one hand, it's
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redundant with the lookup_symbol_aux_symtabs search that happens
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next. On the other hand, if decode_line_1 is passed an argument
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like filename:var, then the user presumably wants 'var' to be
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searched for in filename. On the third hand, there shouldn't be
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multiple global variables all of which are named 'var', and it's
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not like decode_line_1 has ever restricted its search to only
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global variables in a single filename. All in all, only
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searching the static block here seems best: it's correct and it's
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cleanest. */
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/* NOTE: carlton/2002-12-05: There's also a possible performance
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issue here: if you usually search for global symbols in the
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current file, then it would be slightly better to search the
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current global block before searching all the symtabs. But there
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are other factors that have a much greater effect on performance
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than that one, so I don't think we should worry about that for
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now. */
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static_block = block_static_block (block);
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if (static_block != NULL)
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{
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sym = lookup_symbol_aux_block (name, linkage_name, static_block,
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domain, symtab);
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if (sym != NULL)
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return sym;
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}
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/* Now search all global blocks. Do the symtab's first, then
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check the psymtab's. If a psymtab indicates the existence
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of the desired name as a global, then do psymtab-to-symtab
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conversion on the fly and return the found symbol. */
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sym = lookup_symbol_aux_symtabs (GLOBAL_BLOCK, name, linkage_name,
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domain, symtab);
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if (sym != NULL)
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return sym;
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sym = lookup_symbol_aux_psymtabs (GLOBAL_BLOCK, name, linkage_name,
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domain, symtab);
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sym = current_language->la_lookup_symbol_nonlocal (name, linkage_name,
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block, domain,
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symtab);
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if (sym != NULL)
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return sym;
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@ -1086,7 +1041,7 @@ lookup_symbol_aux_local (const char *name, const char *linkage_name,
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/* Look up a symbol in a block; if found, locate its symtab, fixup the
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symbol, and set block_found appropriately. */
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static struct symbol *
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struct symbol *
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lookup_symbol_aux_block (const char *name, const char *linkage_name,
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const struct block *block,
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const domain_enum domain,
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@ -1344,6 +1299,93 @@ lookup_symbol_aux_minsyms (const char *name,
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}
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#endif /* 0 */
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/* A default version of lookup_symbol_nonlocal for use by languages
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that can't think of anything better to do. This implements the C
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lookup rules. */
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struct symbol *
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basic_lookup_symbol_nonlocal (const char *name,
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const char *linkage_name,
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const struct block *block,
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const domain_enum domain,
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struct symtab **symtab)
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{
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struct symbol *sym;
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/* NOTE: carlton/2003-05-19: The comments below were written when
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this (or what turned into this) was part of lookup_symbol_aux;
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I'm much less worried about these questions now, since these
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decisions have turned out well, but I leave these comments here
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for posterity. */
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/* NOTE: carlton/2002-12-05: There is a question as to whether or
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not it would be appropriate to search the current global block
|
||||
here as well. (That's what this code used to do before the
|
||||
is_a_field_of_this check was moved up.) On the one hand, it's
|
||||
redundant with the lookup_symbol_aux_symtabs search that happens
|
||||
next. On the other hand, if decode_line_1 is passed an argument
|
||||
like filename:var, then the user presumably wants 'var' to be
|
||||
searched for in filename. On the third hand, there shouldn't be
|
||||
multiple global variables all of which are named 'var', and it's
|
||||
not like decode_line_1 has ever restricted its search to only
|
||||
global variables in a single filename. All in all, only
|
||||
searching the static block here seems best: it's correct and it's
|
||||
cleanest. */
|
||||
|
||||
/* NOTE: carlton/2002-12-05: There's also a possible performance
|
||||
issue here: if you usually search for global symbols in the
|
||||
current file, then it would be slightly better to search the
|
||||
current global block before searching all the symtabs. But there
|
||||
are other factors that have a much greater effect on performance
|
||||
than that one, so I don't think we should worry about that for
|
||||
now. */
|
||||
|
||||
sym = lookup_symbol_static (name, linkage_name, block, domain, symtab);
|
||||
if (sym != NULL)
|
||||
return sym;
|
||||
|
||||
return lookup_symbol_global (name, linkage_name, domain, symtab);
|
||||
}
|
||||
|
||||
/* Lookup a symbol in the static block associated to BLOCK, if there
|
||||
is one; do nothing if BLOCK is NULL or a global block. */
|
||||
|
||||
struct symbol *
|
||||
lookup_symbol_static (const char *name,
|
||||
const char *linkage_name,
|
||||
const struct block *block,
|
||||
const domain_enum domain,
|
||||
struct symtab **symtab)
|
||||
{
|
||||
const struct block *static_block = block_static_block (block);
|
||||
|
||||
if (static_block != NULL)
|
||||
return lookup_symbol_aux_block (name, linkage_name, static_block,
|
||||
domain, symtab);
|
||||
else
|
||||
return NULL;
|
||||
}
|
||||
|
||||
/* Lookup a symbol in all files' global blocks (searching psymtabs if
|
||||
necessary). */
|
||||
|
||||
struct symbol *
|
||||
lookup_symbol_global (const char *name,
|
||||
const char *linkage_name,
|
||||
const domain_enum domain,
|
||||
struct symtab **symtab)
|
||||
{
|
||||
struct symbol *sym;
|
||||
|
||||
sym = lookup_symbol_aux_symtabs (GLOBAL_BLOCK, name, linkage_name,
|
||||
domain, symtab);
|
||||
if (sym != NULL)
|
||||
return sym;
|
||||
|
||||
return lookup_symbol_aux_psymtabs (GLOBAL_BLOCK, name, linkage_name,
|
||||
domain, symtab);
|
||||
}
|
||||
|
||||
/* Look, in partial_symtab PST, for symbol whose natural name is NAME.
|
||||
If LINKAGE_NAME is non-NULL, check in addition that the symbol's
|
||||
linkage name matches it. Check the global symbols if GLOBAL, the
|
||||
|
||||
39
gdb/symtab.h
39
gdb/symtab.h
@ -988,6 +988,45 @@ extern struct symbol *lookup_symbol (const char *, const struct block *,
|
||||
const domain_enum, int *,
|
||||
struct symtab **);
|
||||
|
||||
/* A default version of lookup_symbol_nonlocal for use by languages
|
||||
that can't think of anything better to do. */
|
||||
|
||||
extern struct symbol *basic_lookup_symbol_nonlocal (const char *,
|
||||
const char *,
|
||||
const struct block *,
|
||||
const domain_enum,
|
||||
struct symtab **);
|
||||
|
||||
/* Some helper functions for languages that need to write their own
|
||||
lookup_symbol_nonlocal functions. */
|
||||
|
||||
/* Lookup a symbol in the static block associated to BLOCK, if there
|
||||
is one; do nothing if BLOCK is NULL or a global block. */
|
||||
|
||||
extern struct symbol *lookup_symbol_static (const char *name,
|
||||
const char *linkage_name,
|
||||
const struct block *block,
|
||||
const domain_enum domain,
|
||||
struct symtab **symtab);
|
||||
|
||||
/* Lookup a symbol in all files' global blocks (searching psymtabs if
|
||||
necessary). */
|
||||
|
||||
extern struct symbol *lookup_symbol_global (const char *name,
|
||||
const char *linkage_name,
|
||||
const domain_enum domain,
|
||||
struct symtab **symtab);
|
||||
|
||||
/* Lookup a symbol within the block BLOCK. This, unlike
|
||||
lookup_symbol_block, will set SYMTAB and BLOCK_FOUND correctly, and
|
||||
will fix up the symbol if necessary. */
|
||||
|
||||
extern struct symbol *lookup_symbol_aux_block (const char *name,
|
||||
const char *linkage_name,
|
||||
const struct block *block,
|
||||
const domain_enum domain,
|
||||
struct symtab **symtab);
|
||||
|
||||
/* lookup a symbol by name, within a specified block */
|
||||
|
||||
extern struct symbol *lookup_block_symbol (const struct block *, const char *,
|
||||
|
||||
Loading…
Reference in New Issue
Block a user