2003-08-20 Michael Chastain <mec@shout.net>
* defs.h (ENUM_BITFIELD): New macro. * symtab.h (ENUM_BITFIELD): Use it. (BYTE_BITFIELD): Remove old macro, which was already disabled.
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Michael Chastain
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@ -1,3 +1,9 @@
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2003-08-20 Michael Chastain <mec@shout.net>
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* defs.h (ENUM_BITFIELD): New macro.
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* symtab.h (ENUM_BITFIELD): Use it.
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(BYTE_BITFIELD): Remove old macro, which was already disabled.
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2003-08-19 Shrinivas Atre <shrinivasa@kpitcummins.com>
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* MAINTAINERS (write after approval): Add myself.
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@ -285,6 +285,15 @@ struct cleanup
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#endif
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#endif
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/* Be conservative and use enum bitfields only with GCC.
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This is copied from gcc 3.3.1, system.h. */
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#if defined(__GNUC__) && (__GNUC__ >= 2)
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#define ENUM_BITFIELD(TYPE) enum TYPE
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#else
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#define ENUM_BITFIELD(TYPE) unsigned int
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#endif
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/* Needed for various prototypes */
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struct symtab;
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86
gdb/symtab.h
86
gdb/symtab.h
@ -35,17 +35,6 @@ struct blockvector;
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struct axs_value;
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struct agent_expr;
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/* Don't do this; it means that if some .o's are compiled with GNU C
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and some are not (easy to do accidentally the way we configure
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things; also it is a pain to have to "make clean" every time you
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want to switch compilers), then GDB dies a horrible death. */
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/* GNU C supports enums that are bitfields. Some compilers don't. */
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#if 0 && defined(__GNUC__) && !defined(BYTE_BITFIELD)
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#define BYTE_BITFIELD :8;
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#else
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#define BYTE_BITFIELD /*nothing */
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#endif
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/* Define a structure for the information that is common to all symbol types,
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including minimal symbols, partial symbols, and full symbols. In a
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multilanguage environment, some language specific information may need to
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@ -107,7 +96,7 @@ struct general_symbol_info
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This is used to select one of the fields from the language specific
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union above. */
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enum language language BYTE_BITFIELD;
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ENUM_BITFIELD(language) language : 8;
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/* Which section is this symbol in? This is an index into
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section_offsets for this objfile. Negative means that the symbol
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@ -227,6 +216,37 @@ extern char *symbol_demangled_name (struct general_symbol_info *symbol);
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#define SYMBOL_MATCHES_NATURAL_NAME(symbol, name) \
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(strcmp_iw (SYMBOL_NATURAL_NAME (symbol), (name)) == 0)
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/* Classification types for a minimal symbol. These should be taken as
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"advisory only", since if gdb can't easily figure out a
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classification it simply selects mst_unknown. It may also have to
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guess when it can't figure out which is a better match between two
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types (mst_data versus mst_bss) for example. Since the minimal
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symbol info is sometimes derived from the BFD library's view of a
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file, we need to live with what information bfd supplies. */
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enum minimal_symbol_type
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{
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mst_unknown = 0, /* Unknown type, the default */
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mst_text, /* Generally executable instructions */
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mst_data, /* Generally initialized data */
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mst_bss, /* Generally uninitialized data */
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mst_abs, /* Generally absolute (nonrelocatable) */
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/* GDB uses mst_solib_trampoline for the start address of a shared
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library trampoline entry. Breakpoints for shared library functions
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are put there if the shared library is not yet loaded.
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After the shared library is loaded, lookup_minimal_symbol will
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prefer the minimal symbol from the shared library (usually
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a mst_text symbol) over the mst_solib_trampoline symbol, and the
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breakpoints will be moved to their true address in the shared
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library via breakpoint_re_set. */
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mst_solib_trampoline, /* Shared library trampoline code */
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/* For the mst_file* types, the names are only guaranteed to be unique
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within a given .o file. */
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mst_file_text, /* Static version of mst_text */
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mst_file_data, /* Static version of mst_data */
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mst_file_bss /* Static version of mst_bss */
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};
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/* Define a simple structure used to hold some very basic information about
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all defined global symbols (text, data, bss, abs, etc). The only required
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information is the general_symbol_info.
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@ -268,37 +288,9 @@ struct minimal_symbol
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char *filename;
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#endif
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/* Classification types for this symbol. These should be taken as "advisory
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only", since if gdb can't easily figure out a classification it simply
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selects mst_unknown. It may also have to guess when it can't figure out
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which is a better match between two types (mst_data versus mst_bss) for
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example. Since the minimal symbol info is sometimes derived from the
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BFD library's view of a file, we need to live with what information bfd
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supplies. */
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/* Classification type for this minimal symbol. */
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enum minimal_symbol_type
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{
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mst_unknown = 0, /* Unknown type, the default */
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mst_text, /* Generally executable instructions */
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mst_data, /* Generally initialized data */
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mst_bss, /* Generally uninitialized data */
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mst_abs, /* Generally absolute (nonrelocatable) */
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/* GDB uses mst_solib_trampoline for the start address of a shared
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library trampoline entry. Breakpoints for shared library functions
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are put there if the shared library is not yet loaded.
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After the shared library is loaded, lookup_minimal_symbol will
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prefer the minimal symbol from the shared library (usually
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a mst_text symbol) over the mst_solib_trampoline symbol, and the
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breakpoints will be moved to their true address in the shared
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library via breakpoint_re_set. */
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mst_solib_trampoline, /* Shared library trampoline code */
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/* For the mst_file* types, the names are only guaranteed to be unique
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within a given .o file. */
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mst_file_text, /* Static version of mst_text */
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mst_file_data, /* Static version of mst_data */
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mst_file_bss /* Static version of mst_bss */
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}
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type BYTE_BITFIELD;
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ENUM_BITFIELD(minimal_symbol_type) type : 8;
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/* Minimal symbols with the same hash key are kept on a linked
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list. This is the link. */
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@ -321,7 +313,7 @@ struct minimal_symbol
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/* Different name domains for symbols. Looking up a symbol specifies a
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domain and ignores symbol definitions in other name domains. */
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typedef enum
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typedef enum domain_enum_tag
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{
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/* UNDEF_DOMAIN is used when a domain has not been discovered or
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none of the following apply. This usually indicates an error either
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@ -578,11 +570,11 @@ struct symbol
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/* Domain code. */
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domain_enum domain BYTE_BITFIELD;
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ENUM_BITFIELD(domain_enum_tag) domain : 6;
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/* Address class */
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enum address_class aclass BYTE_BITFIELD;
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ENUM_BITFIELD(address_class) aclass : 6;
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/* Line number of definition. FIXME: Should we really make the assumption
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that nobody will try to debug files longer than 64K lines? What about
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@ -655,11 +647,11 @@ struct partial_symbol
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/* Name space code. */
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domain_enum domain BYTE_BITFIELD;
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ENUM_BITFIELD(domain_enum_tag) domain : 6;
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/* Address class (for info_symbols) */
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enum address_class aclass BYTE_BITFIELD;
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ENUM_BITFIELD(address_class) aclass : 6;
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};
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