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* dbxread.c, buildsym.c, symtab.c, stabsread.c: Add support for

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reading stabs extensions for live range information.
	* stabsread.h, partial-stab.h: Add prototypes for new functions.
	* symtab.h: Add structure for storing live range information.
This commit is contained in:
Dawn Perchik
1997-09-08 00:38:19 +00:00
parent 60b570d17a
commit d719efc6d5
8 changed files with 750 additions and 201 deletions
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54
gdb/symtab.h
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@ -84,7 +84,7 @@ struct general_symbol_info
union
{
struct cplus_specific /* For C++ */
struct cplus_specific /* For C++ and Java */
{
char *demangled_name;
} cplus_specific;
@ -135,7 +135,8 @@ extern CORE_ADDR symbol_overlayed_address PARAMS((CORE_ADDR, asection *));
#define SYMBOL_INIT_LANGUAGE_SPECIFIC(symbol,language) \
do { \
SYMBOL_LANGUAGE (symbol) = language; \
if (SYMBOL_LANGUAGE (symbol) == language_cplus) \
if (SYMBOL_LANGUAGE (symbol) == language_cplus \
|| SYMBOL_LANGUAGE (symbol) == language_java) \
{ \
SYMBOL_CPLUS_DEMANGLED_NAME (symbol) = NULL; \
} \
@ -179,6 +180,23 @@ extern CORE_ADDR symbol_overlayed_address PARAMS((CORE_ADDR, asection *));
SYMBOL_CPLUS_DEMANGLED_NAME (symbol) = NULL; \
} \
} \
if (SYMBOL_LANGUAGE (symbol) == language_java) \
{ \
demangled = \
cplus_demangle (SYMBOL_NAME (symbol), \
DMGL_PARAMS | DMGL_ANSI | DMGL_JAVA); \
if (demangled != NULL) \
{ \
SYMBOL_LANGUAGE (symbol) = language_java; \
SYMBOL_CPLUS_DEMANGLED_NAME (symbol) = \
obsavestring (demangled, strlen (demangled), (obstack)); \
free (demangled); \
} \
else \
{ \
SYMBOL_CPLUS_DEMANGLED_NAME (symbol) = NULL; \
} \
} \
if (demangled == NULL \
&& (SYMBOL_LANGUAGE (symbol) == language_chill \
|| SYMBOL_LANGUAGE (symbol) == language_auto)) \
@ -208,6 +226,7 @@ extern CORE_ADDR symbol_overlayed_address PARAMS((CORE_ADDR, asection *));
#define SYMBOL_DEMANGLED_NAME(symbol) \
(SYMBOL_LANGUAGE (symbol) == language_cplus \
|| SYMBOL_LANGUAGE (symbol) == language_java \
? SYMBOL_CPLUS_DEMANGLED_NAME (symbol) \
: (SYMBOL_LANGUAGE (symbol) == language_chill \
? SYMBOL_CHILL_DEMANGLED_NAME (symbol) \
@ -584,6 +603,15 @@ enum address_class
LOC_OPTIMIZED_OUT
};
/* Linked list of symbol's live ranges. */
struct live_range
{
CORE_ADDR start;
CORE_ADDR end;
struct live_range *next;
};
struct symbol
{
@ -623,6 +651,23 @@ struct symbol
short basereg;
}
aux_value;
/* Live range information (if present) for debugging of optimized code.
Gcc extensions were added to stabs to encode live range information.
The syntax for referencing (defining) symbol aliases is "#n" ("#n=")
where n is a number. The syntax for specifying a range is "l(#<m>,#<n>)",
where m and n are numbers.
aliases - list of other symbols which are lexically the same symbol,
but were optimized into different storage classes (eg. for the
local symbol "x", one symbol contains range information where x
is on the stack, while an alias contains the live ranges where x
is in a register).
range - list of instruction ranges where the symbol is live. */
struct live_range_info
{
struct symbol *aliases; /* Link to other aliases for this symbol. */
struct live_range *range; /* Linked list of live ranges. */
} live;
};
#define SYMBOL_NAMESPACE(symbol) (symbol)->namespace
@ -630,6 +675,11 @@ struct symbol
#define SYMBOL_TYPE(symbol) (symbol)->type
#define SYMBOL_LINE(symbol) (symbol)->line
#define SYMBOL_BASEREG(symbol) (symbol)->aux_value.basereg
#define SYMBOL_ALIASES(symbol) (symbol)->live.aliases
#define SYMBOL_RANGE(symbol) (symbol)->live.range
#define SYMBOL_RANGE_START(symbol) (symbol)->live.range->start
#define SYMBOL_RANGE_END(symbol) (symbol)->live.range->end
#define SYMBOL_RANGE_NEXT(symbol) (symbol)->live.range->next
/* A partial_symbol records the name, namespace, and address class of
symbols whose types we have not parsed yet. For functions, it also