static char *find_name_end (char *name);
-static void add_live_range (struct objfile *, struct symbol *, CORE_ADDR,
- CORE_ADDR);
-
-static int resolve_live_range (struct objfile *, struct symbol *, char *);
-
static int process_reference (char **string);
static CORE_ADDR ref_search_value (int refnum);
-static int resolve_symbol_reference (struct objfile *, struct symbol *,
- char *);
-
void stabsread_clear_cache (void);
static const char vptr_name[] = "_vptr$";
#define VISIBILITY_PUBLIC '2' /* Stabs character for public field */
#define VISIBILITY_IGNORE '9' /* Optimized out or zero length */
-/* This routine fixes up symbol references/aliases to point to the original
- symbol definition. Returns 0 on failure, non-zero on success. */
-
-static int
-resolve_symbol_reference (struct objfile *objfile, struct symbol *sym, char *p)
-{
- int refnum;
- struct symbol *ref_sym = 0;
- struct alias_list *alias;
-
- /* If this is not a symbol reference return now. */
- if (*p != '#')
- return 0;
-
- /* Use "#<num>" as the name; we'll fix the name later.
- We stored the original symbol name as "#<id>=<name>"
- so we can now search for "#<id>" to resolving the reference.
- We'll fix the names later by removing the "#<id>" or "#<id>=" */
-
-/*---------------------------------------------------------*/
- /* Get the reference id number, and
- advance p past the names so we can parse the rest.
- eg: id=2 for p : "2=", "2=z:r(0,1)" "2:r(0,1);l(#5,#6),l(#7,#4)" */
-/*---------------------------------------------------------*/
-
- /* This gets reference name from string. sym may not have a name. */
-
- /* Get the reference number associated with the reference id in the
- gdb stab string. From that reference number, get the main/primary
- symbol for this alias. */
- refnum = process_reference (&p);
- ref_sym = ref_search (refnum);
- if (!ref_sym)
- {
- lrs_general_complaint ("symbol for reference not found");
- return 0;
- }
-
- /* Parse the stab of the referencing symbol
- now that we have the referenced symbol.
- Add it as a new symbol and a link back to the referenced symbol.
- eg: p : "=", "=z:r(0,1)" ":r(0,1);l(#5,#6),l(#7,#4)" */
-
-
- /* If the stab symbol table and string contain:
- RSYM 0 5 00000000 868 #15=z:r(0,1)
- LBRAC 0 0 00000000 899 #5=
- SLINE 0 16 00000003 923 #6=
- Then the same symbols can be later referenced by:
- RSYM 0 5 00000000 927 #15:r(0,1);l(#5,#6)
- This is used in live range splitting to:
- 1) specify that a symbol (#15) is actually just a new storage
- class for a symbol (#15=z) which was previously defined.
- 2) specify that the beginning and ending ranges for a symbol
- (#15) are the values of the beginning (#5) and ending (#6)
- symbols. */
-
- /* Read number as reference id.
- eg: p : "=", "=z:r(0,1)" ":r(0,1);l(#5,#6),l(#7,#4)" */
- /* FIXME! Might I want to use SYMBOL_CLASS (sym) = LOC_OPTIMIZED_OUT;
- in case of "l(0,0)"? */
-
-/*--------------------------------------------------*/
- /* Add this symbol to the reference list. */
-/*--------------------------------------------------*/
-
- alias = (struct alias_list *) obstack_alloc (&objfile->type_obstack,
- sizeof (struct alias_list));
- if (!alias)
- {
- lrs_general_complaint ("Unable to allocate alias list memory");
- return 0;
- }
-
- alias->next = 0;
- alias->sym = sym;
-
- if (!SYMBOL_ALIASES (ref_sym))
- {
- SYMBOL_ALIASES (ref_sym) = alias;
- }
- else
- {
- struct alias_list *temp;
-
- /* Get to the end of the list. */
- for (temp = SYMBOL_ALIASES (ref_sym);
- temp->next;
- temp = temp->next)
- ;
- temp->next = alias;
- }
-
- /* Want to fix up name so that other functions (eg. valops)
- will correctly print the name.
- Don't add_symbol_to_list so that lookup_symbol won't find it.
- nope... needed for fixups. */
- DEPRECATED_SYMBOL_NAME (sym) = DEPRECATED_SYMBOL_NAME (ref_sym);
-
- /* Done! */
- return 1;
-}
-
/* Structure for storing pointers to reference definitions for fast lookup
during "process_later". */
goto normal; /* Do *something* with it */
}
}
- else if (string[0] == '#')
- {
- /* Special GNU C extension for referencing symbols. */
- char *s;
- int refnum, nlen;
-
- /* If STRING defines a new reference id, then add it to the
- reference map. Else it must be referring to a previously
- defined symbol, so add it to the alias list of the previously
- defined symbol. */
- s = string;
- refnum = symbol_reference_defined (&s);
- if (refnum >= 0)
- ref_add (refnum, sym, string, SYMBOL_VALUE (sym));
- else if (!resolve_symbol_reference (objfile, sym, string))
- return NULL;
-
- /* S..P contains the name of the symbol. We need to store
- the correct name into DEPRECATED_SYMBOL_NAME. */
- nlen = p - s;
- if (refnum >= 0)
- {
- if (nlen > 0)
- SYMBOL_SET_NAMES (sym, s, nlen, objfile);
- else
- /* FIXME! Want DEPRECATED_SYMBOL_NAME (sym) = 0;
- Get error if leave name 0. So give it something. */
- {
- nlen = p - string;
- SYMBOL_SET_NAMES (sym, string, nlen, objfile);
- }
- }
- /* Advance STRING beyond the reference id. */
- string = s;
- }
else
{
normal:
SYMBOL_CLASS (sym) = LOC_REF_ARG;
}
- /* Is there more to parse? For example LRS/alias information? */
- while (*p && *p == ';')
- {
- p++;
- if (*p && p[0] == 'l' && p[1] == '(')
- {
- /* GNU extensions for live range splitting may be appended to
- the end of the stab string. eg. "l(#1,#2);l(#3,#5)" */
-
- /* Resolve the live range and add it to SYM's live range list. */
- if (!resolve_live_range (objfile, sym, p))
- return NULL;
-
- /* Find end of live range info. */
- p = strchr (p, ')');
- if (!*p || *p != ')')
- {
- lrs_general_complaint ("live range format not recognized");
- return NULL;
- }
- p++;
- }
- }
return sym;
}
-/* Add the live range found in P to the symbol SYM in objfile OBJFILE. Returns
- non-zero on success, zero otherwise. */
-
-static int
-resolve_live_range (struct objfile *objfile, struct symbol *sym, char *p)
-{
- int refnum;
- CORE_ADDR start, end;
-
- /* Sanity check the beginning of the stabs string. */
- if (!*p || *p != 'l')
- {
- lrs_general_complaint ("live range string 1");
- return 0;
- }
- p++;
-
- if (!*p || *p != '(')
- {
- lrs_general_complaint ("live range string 2");
- return 0;
- }
- p++;
-
- /* Get starting value of range and advance P past the reference id.
-
- ?!? In theory, the process_reference should never fail, but we should
- catch that case just in case the compiler scrogged the stabs. */
- refnum = process_reference (&p);
- start = ref_search_value (refnum);
- if (!start)
- {
- lrs_general_complaint ("Live range symbol not found 1");
- return 0;
- }
-
- if (!*p || *p != ',')
- {
- lrs_general_complaint ("live range string 3");
- return 0;
- }
- p++;
-
- /* Get ending value of range and advance P past the reference id.
-
- ?!? In theory, the process_reference should never fail, but we should
- catch that case just in case the compiler scrogged the stabs. */
- refnum = process_reference (&p);
- end = ref_search_value (refnum);
- if (!end)
- {
- lrs_general_complaint ("Live range symbol not found 2");
- return 0;
- }
-
- if (!*p || *p != ')')
- {
- lrs_general_complaint ("live range string 4");
- return 0;
- }
-
- /* Now that we know the bounds of the range, add it to the
- symbol. */
- add_live_range (objfile, sym, start, end);
-
- return 1;
-}
-
-/* Add a new live range defined by START and END to the symbol SYM
- in objfile OBJFILE. */
-
-static void
-add_live_range (struct objfile *objfile, struct symbol *sym, CORE_ADDR start,
- CORE_ADDR end)
-{
- struct range_list *r, *rs;
-
- if (start >= end)
- {
- lrs_general_complaint ("end of live range follows start");
- return;
- }
-
- /* Alloc new live range structure. */
- r = (struct range_list *)
- obstack_alloc (&objfile->type_obstack,
- sizeof (struct range_list));
- r->start = start;
- r->end = end;
- r->next = 0;
-
- /* Append this range to the symbol's range list. */
- if (!SYMBOL_RANGES (sym))
- SYMBOL_RANGES (sym) = r;
- else
- {
- /* Get the last range for the symbol. */
- for (rs = SYMBOL_RANGES (sym); rs->next; rs = rs->next)
- ;
- rs->next = r;
- }
-}
-\f
-
/* Skip rest of this symbol and return an error type.
General notes on error recovery: error_type always skips to the
{
int hash;
struct minimal_symbol *msymbol;
- struct symbol *sym, *prev, *rsym;
+ struct symbol *sym, *prev;
struct objfile *resolve_objfile;
/* SVR4 based linkers copy referenced global symbols from shared
if (DEPRECATED_SYMBOL_NAME (msymbol)[0] == DEPRECATED_SYMBOL_NAME (sym)[0] &&
STREQ (DEPRECATED_SYMBOL_NAME (msymbol) + 1, DEPRECATED_SYMBOL_NAME (sym) + 1))
{
-
- struct alias_list *aliases;
-
/* Splice this symbol out of the hash chain and
assign the value we have to it. */
if (prev)
/* Check to see whether we need to fix up a common block. */
/* Note: this code might be executed several times for
the same symbol if there are multiple references. */
-
- /* If symbol has aliases, do minimal symbol fixups for each.
- These live aliases/references weren't added to
- global_sym_chain hash but may also need to be fixed up. */
- /* FIXME: Maybe should have added aliases to the global chain, resolved symbol name, then treated aliases as normal
- symbols? Still, we wouldn't want to add_to_list. */
- /* Now do the same for each alias of this symbol */
- rsym = sym;
- aliases = SYMBOL_ALIASES (sym);
- while (rsym)
+ if (sym)
{
- if (SYMBOL_CLASS (rsym) == LOC_BLOCK)
+ if (SYMBOL_CLASS (sym) == LOC_BLOCK)
{
- fix_common_block (rsym,
+ fix_common_block (sym,
SYMBOL_VALUE_ADDRESS (msymbol));
}
else
{
- SYMBOL_VALUE_ADDRESS (rsym)
+ SYMBOL_VALUE_ADDRESS (sym)
= SYMBOL_VALUE_ADDRESS (msymbol);
}
- SYMBOL_SECTION (rsym) = SYMBOL_SECTION (msymbol);
- if (aliases)
- {
- rsym = aliases->sym;
- aliases = aliases->next;
- }
- else
- rsym = NULL;
+ SYMBOL_SECTION (sym) = SYMBOL_SECTION (msymbol);
}
-
if (prev)
{
sym = SYMBOL_VALUE_CHAIN (prev);
struct symtab **symtab);
#endif
-static struct symbol *find_active_alias (struct symbol *sym, CORE_ADDR addr);
-
/* This flag is used in hppa-tdep.c, and set in hp-symtab-read.c */
/* Signals the presence of objects compiled by HP compilers */
int hp_som_som_object_present = 0;
&& (linkage_name != NULL
? strcmp (SYMBOL_LINKAGE_NAME (sym), linkage_name) == 0 : 1))
{
- /* If SYM has aliases, then use any alias that is active
- at the current PC. If no alias is active at the current
- PC, then use the main symbol.
-
- ?!? Is checking the current pc correct? Is this routine
- ever called to look up a symbol from another context?
-
- FIXME: No, it's not correct. If someone sets a
- conditional breakpoint at an address, then the
- breakpoint's `struct expression' should refer to the
- `struct symbol' appropriate for the breakpoint's
- address, which may not be the PC.
-
- Even if it were never called from another context,
- it's totally bizarre for lookup_symbol's behavior to
- depend on the value of the inferior's current PC. We
- should pass in the appropriate PC as well as the
- block. The interface to lookup_symbol should change
- to require the caller to provide a PC. */
-
- if (SYMBOL_ALIASES (sym))
- sym = find_active_alias (sym, read_pc ());
-
sym_found = sym;
if (SYMBOL_CLASS (sym) != LOC_ARG &&
SYMBOL_CLASS (sym) != LOC_LOCAL_ARG &&
}
}
-/* Given a main symbol SYM and ADDR, search through the alias
- list to determine if an alias is active at ADDR and return
- the active alias.
-
- If no alias is active, then return SYM. */
-
-static struct symbol *
-find_active_alias (struct symbol *sym, CORE_ADDR addr)
-{
- struct range_list *r;
- struct alias_list *aliases;
-
- /* If we have aliases, check them first. */
- aliases = SYMBOL_ALIASES (sym);
-
- while (aliases)
- {
- if (!SYMBOL_RANGES (aliases->sym))
- return aliases->sym;
- for (r = SYMBOL_RANGES (aliases->sym); r; r = r->next)
- {
- if (r->start <= addr && r->end > addr)
- return aliases->sym;
- }
- aliases = aliases->next;
- }
-
- /* Nothing found, return the main symbol. */
- return sym;
-}
-\f
-
/* Find the symtab associated with PC and SECTION. Look through the
psymtabs and read in another symtab if necessary. */
projects / external / binutils.git / commitdiff