gdb/
GDB find_pc_partial_function support for STT_GNU_IFUNC. * blockframe.c (cache_pc_function_is_gnu_ifunc): New variable. (clear_pc_function_cache): Clear it. (find_pc_partial_function): Rename to ... (find_pc_partial_function_gnu_ifunc): ... this function. New parameter is_gnu_ifunc_p, describe it. Set *IS_GNU_IFUNC_P. (find_pc_partial_function): New wrapper for this function. * symtab.h (find_pc_partial_function_gnu_ifunc): New declaration.
This commit is contained in:
Jan Kratochvil
parent
0875794a96
commit
11c8145561
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@ -1,3 +1,14 @@
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2011-03-28 Jan Kratochvil <jan.kratochvil@redhat.com>
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GDB find_pc_partial_function support for STT_GNU_IFUNC.
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* blockframe.c (cache_pc_function_is_gnu_ifunc): New variable.
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(clear_pc_function_cache): Clear it.
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(find_pc_partial_function): Rename to ...
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(find_pc_partial_function_gnu_ifunc): ... this function. New
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parameter is_gnu_ifunc_p, describe it. Set *IS_GNU_IFUNC_P.
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(find_pc_partial_function): New wrapper for this function.
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* symtab.h (find_pc_partial_function_gnu_ifunc): New declaration.
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2011-03-28 Jan Kratochvil <jan.kratochvil@redhat.com>
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GDB internal type support for STT_GNU_IFUNC.
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@ -163,6 +163,7 @@ static CORE_ADDR cache_pc_function_low = 0;
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static CORE_ADDR cache_pc_function_high = 0;
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static char *cache_pc_function_name = 0;
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static struct obj_section *cache_pc_function_section = NULL;
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static int cache_pc_function_is_gnu_ifunc = 0;
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/* Clear cache, e.g. when symbol table is discarded. */
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@ -173,6 +174,7 @@ clear_pc_function_cache (void)
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cache_pc_function_high = 0;
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cache_pc_function_name = (char *) 0;
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cache_pc_function_section = NULL;
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cache_pc_function_is_gnu_ifunc = 0;
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}
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/* Finds the "function" (text symbol) that is smaller than PC but
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@ -180,17 +182,19 @@ clear_pc_function_cache (void)
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*NAME and/or *ADDRESS conditionally if that pointer is non-null.
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If ENDADDR is non-null, then set *ENDADDR to be the end of the
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function (exclusive), but passing ENDADDR as non-null means that
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the function might cause symbols to be read. This function either
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succeeds or fails (not halfway succeeds). If it succeeds, it sets
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*NAME, *ADDRESS, and *ENDADDR to real information and returns 1.
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If it fails, it sets *NAME, *ADDRESS, and *ENDADDR to zero and
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returns 0. */
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the function might cause symbols to be read. If IS_GNU_IFUNC_P is provided
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*IS_GNU_IFUNC_P is set to 1 on return if the function is STT_GNU_IFUNC.
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This function either succeeds or fails (not halfway succeeds). If it
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succeeds, it sets *NAME, *ADDRESS, and *ENDADDR to real information and
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returns 1. If it fails, it sets *NAME, *ADDRESS, *ENDADDR and
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*IS_GNU_IFUNC_P to zero and returns 0. */
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/* Backward compatibility, no section argument. */
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int
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find_pc_partial_function (CORE_ADDR pc, char **name, CORE_ADDR *address,
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CORE_ADDR *endaddr)
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find_pc_partial_function_gnu_ifunc (CORE_ADDR pc, char **name,
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CORE_ADDR *address, CORE_ADDR *endaddr,
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int *is_gnu_ifunc_p)
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{
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struct obj_section *section;
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struct symbol *f;
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@ -240,6 +244,7 @@ find_pc_partial_function (CORE_ADDR pc, char **name, CORE_ADDR *address,
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cache_pc_function_high = BLOCK_END (SYMBOL_BLOCK_VALUE (f));
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cache_pc_function_name = SYMBOL_LINKAGE_NAME (f);
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cache_pc_function_section = section;
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cache_pc_function_is_gnu_ifunc = TYPE_GNU_IFUNC (SYMBOL_TYPE (f));
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goto return_cached_value;
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}
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}
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@ -262,12 +267,15 @@ find_pc_partial_function (CORE_ADDR pc, char **name, CORE_ADDR *address,
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*address = 0;
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if (endaddr != NULL)
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*endaddr = 0;
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if (is_gnu_ifunc_p != NULL)
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*is_gnu_ifunc_p = 0;
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return 0;
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}
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cache_pc_function_low = SYMBOL_VALUE_ADDRESS (msymbol);
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cache_pc_function_name = SYMBOL_LINKAGE_NAME (msymbol);
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cache_pc_function_section = section;
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cache_pc_function_is_gnu_ifunc = MSYMBOL_TYPE (msymbol) == mst_text_gnu_ifunc;
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/* If the minimal symbol has a size, use it for the cache.
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Otherwise use the lesser of the next minimal symbol in the same
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@ -330,9 +338,22 @@ find_pc_partial_function (CORE_ADDR pc, char **name, CORE_ADDR *address,
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*endaddr = cache_pc_function_high;
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}
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if (is_gnu_ifunc_p)
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*is_gnu_ifunc_p = cache_pc_function_is_gnu_ifunc;
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return 1;
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}
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/* See find_pc_partial_function_gnu_ifunc, only the IS_GNU_IFUNC_P parameter
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is omitted here for backward API compatibility. */
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int
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find_pc_partial_function (CORE_ADDR pc, char **name, CORE_ADDR *address,
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CORE_ADDR *endaddr)
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{
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return find_pc_partial_function_gnu_ifunc (pc, name, address, endaddr, NULL);
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}
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/* Return the innermost stack frame executing inside of BLOCK, or NULL
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if there is no such frame. If BLOCK is NULL, just return NULL. */
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@ -956,6 +956,11 @@ extern struct symbol *find_pc_function (CORE_ADDR);
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extern struct symbol *find_pc_sect_function (CORE_ADDR, struct obj_section *);
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extern int find_pc_partial_function_gnu_ifunc (CORE_ADDR pc, char **name,
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CORE_ADDR *address,
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CORE_ADDR *endaddr,
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int *is_gnu_ifunc_p);
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/* lookup function from address, return name, start addr and end addr. */
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extern int find_pc_partial_function (CORE_ADDR, char **, CORE_ADDR *,
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