/* Get info from stack frames; convert between frames, blocks,
functions and pc values.
- Copyright (C) 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995,
- 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2007, 2008
- Free Software Foundation, Inc.
+ Copyright (C) 1986-2013 Free Software Foundation, Inc.
This file is part of GDB.
#include "command.h"
#include "gdbcmd.h"
#include "block.h"
+#include "inline-frame.h"
+#include "psymtab.h"
-/* Prototypes for exported functions. */
-
-void _initialize_blockframe (void);
-
-/* Return the innermost lexical block in execution
- in a specified stack frame. The frame address is assumed valid.
+/* Return the innermost lexical block in execution in a specified
+ stack frame. The frame address is assumed valid.
If ADDR_IN_BLOCK is non-zero, set *ADDR_IN_BLOCK to the exact code
address we used to choose the block. We use this to find a source
struct block *
get_frame_block (struct frame_info *frame, CORE_ADDR *addr_in_block)
{
- const CORE_ADDR pc = get_frame_address_in_block (frame);
+ CORE_ADDR pc;
+ struct block *bl;
+ int inline_count;
+
+ if (!get_frame_address_in_block_if_available (frame, &pc))
+ return NULL;
if (addr_in_block)
*addr_in_block = pc;
- return block_for_pc (pc);
+ bl = block_for_pc (pc);
+ if (bl == NULL)
+ return NULL;
+
+ inline_count = frame_inlined_callees (frame);
+
+ while (inline_count > 0)
+ {
+ if (block_inlined_p (bl))
+ inline_count--;
+
+ bl = BLOCK_SUPERBLOCK (bl);
+ gdb_assert (bl != NULL);
+ }
+
+ return bl;
}
CORE_ADDR
get_frame_function (struct frame_info *frame)
{
struct block *bl = get_frame_block (frame, 0);
- if (bl == 0)
- return 0;
- return block_linkage_function (bl);
+
+ if (bl == NULL)
+ return NULL;
+
+ while (BLOCK_FUNCTION (bl) == NULL && BLOCK_SUPERBLOCK (bl) != NULL)
+ bl = BLOCK_SUPERBLOCK (bl);
+
+ return BLOCK_FUNCTION (bl);
}
\f
Returns 0 if function is not known. */
struct symbol *
-find_pc_sect_function (CORE_ADDR pc, struct bfd_section *section)
+find_pc_sect_function (CORE_ADDR pc, struct obj_section *section)
{
struct block *b = block_for_pc_sect (pc, section);
+
if (b == 0)
return 0;
return block_linkage_function (b);
}
/* Return the function containing pc value PC.
- Returns 0 if function is not known. Backward compatibility, no section */
+ Returns 0 if function is not known.
+ Backward compatibility, no section */
struct symbol *
find_pc_function (CORE_ADDR pc)
}
/* These variables are used to cache the most recent result
- * of find_pc_partial_function. */
+ of find_pc_partial_function. */
static CORE_ADDR cache_pc_function_low = 0;
static CORE_ADDR cache_pc_function_high = 0;
-static char *cache_pc_function_name = 0;
-static struct bfd_section *cache_pc_function_section = NULL;
+static const char *cache_pc_function_name = 0;
+static struct obj_section *cache_pc_function_section = NULL;
+static int cache_pc_function_is_gnu_ifunc = 0;
-/* Clear cache, e.g. when symbol table is discarded. */
+/* Clear cache, e.g. when symbol table is discarded. */
void
clear_pc_function_cache (void)
cache_pc_function_high = 0;
cache_pc_function_name = (char *) 0;
cache_pc_function_section = NULL;
+ cache_pc_function_is_gnu_ifunc = 0;
}
/* Finds the "function" (text symbol) that is smaller than PC but
*NAME and/or *ADDRESS conditionally if that pointer is non-null.
If ENDADDR is non-null, then set *ENDADDR to be the end of the
function (exclusive), but passing ENDADDR as non-null means that
- the function might cause symbols to be read. This function either
- succeeds or fails (not halfway succeeds). If it succeeds, it sets
- *NAME, *ADDRESS, and *ENDADDR to real information and returns 1.
- If it fails, it sets *NAME, *ADDRESS, and *ENDADDR to zero and
- returns 0. */
+ the function might cause symbols to be read. If IS_GNU_IFUNC_P is provided
+ *IS_GNU_IFUNC_P is set to 1 on return if the function is STT_GNU_IFUNC.
+ This function either succeeds or fails (not halfway succeeds). If it
+ succeeds, it sets *NAME, *ADDRESS, and *ENDADDR to real information and
+ returns 1. If it fails, it sets *NAME, *ADDRESS, *ENDADDR and
+ *IS_GNU_IFUNC_P to zero and returns 0. */
/* Backward compatibility, no section argument. */
int
-find_pc_partial_function (CORE_ADDR pc, char **name, CORE_ADDR *address,
- CORE_ADDR *endaddr)
+find_pc_partial_function_gnu_ifunc (CORE_ADDR pc, const char **name,
+ CORE_ADDR *address, CORE_ADDR *endaddr,
+ int *is_gnu_ifunc_p)
{
- struct bfd_section *section;
- struct partial_symtab *pst;
+ struct obj_section *section;
struct symbol *f;
struct minimal_symbol *msymbol;
- struct partial_symbol *psb;
- struct obj_section *osect;
+ struct symtab *symtab = NULL;
+ struct objfile *objfile;
int i;
CORE_ADDR mapped_pc;
the normal section code (which almost always succeeds). */
section = find_pc_overlay (pc);
if (section == NULL)
- {
- struct obj_section *obj_section = find_pc_section (pc);
- if (obj_section == NULL)
- section = NULL;
- else
- section = obj_section->the_bfd_section;
- }
+ section = find_pc_section (pc);
mapped_pc = overlay_mapped_address (pc, section);
goto return_cached_value;
msymbol = lookup_minimal_symbol_by_pc_section (mapped_pc, section);
- pst = find_pc_sect_psymtab (mapped_pc, section);
- if (pst)
+ ALL_OBJFILES (objfile)
+ {
+ if (objfile->sf)
+ symtab = objfile->sf->qf->find_pc_sect_symtab (objfile, msymbol,
+ mapped_pc, section, 0);
+ if (symtab)
+ break;
+ }
+
+ if (symtab)
{
- /* Need to read the symbols to get a good value for the end address. */
- if (endaddr != NULL && !pst->readin)
- {
- /* Need to get the terminal in case symbol-reading produces
- output. */
- target_terminal_ours_for_output ();
- PSYMTAB_TO_SYMTAB (pst);
- }
-
- if (pst->readin)
- {
- /* Checking whether the msymbol has a larger value is for the
- "pathological" case mentioned in print_frame_info. */
- f = find_pc_sect_function (mapped_pc, section);
- if (f != NULL
- && (msymbol == NULL
- || (BLOCK_START (SYMBOL_BLOCK_VALUE (f))
- >= SYMBOL_VALUE_ADDRESS (msymbol))))
- {
- cache_pc_function_low = BLOCK_START (SYMBOL_BLOCK_VALUE (f));
- cache_pc_function_high = BLOCK_END (SYMBOL_BLOCK_VALUE (f));
- cache_pc_function_name = DEPRECATED_SYMBOL_NAME (f);
- cache_pc_function_section = section;
- goto return_cached_value;
- }
- }
- else
+ /* Checking whether the msymbol has a larger value is for the
+ "pathological" case mentioned in print_frame_info. */
+ f = find_pc_sect_function (mapped_pc, section);
+ if (f != NULL
+ && (msymbol == NULL
+ || (BLOCK_START (SYMBOL_BLOCK_VALUE (f))
+ >= SYMBOL_VALUE_ADDRESS (msymbol))))
{
- /* Now that static symbols go in the minimal symbol table, perhaps
- we could just ignore the partial symbols. But at least for now
- we use the partial or minimal symbol, whichever is larger. */
- psb = find_pc_sect_psymbol (pst, mapped_pc, section);
-
- if (psb
- && (msymbol == NULL ||
- (SYMBOL_VALUE_ADDRESS (psb)
- >= SYMBOL_VALUE_ADDRESS (msymbol))))
- {
- /* This case isn't being cached currently. */
- if (address)
- *address = SYMBOL_VALUE_ADDRESS (psb);
- if (name)
- *name = DEPRECATED_SYMBOL_NAME (psb);
- /* endaddr non-NULL can't happen here. */
- return 1;
- }
+ cache_pc_function_low = BLOCK_START (SYMBOL_BLOCK_VALUE (f));
+ cache_pc_function_high = BLOCK_END (SYMBOL_BLOCK_VALUE (f));
+ cache_pc_function_name = SYMBOL_LINKAGE_NAME (f);
+ cache_pc_function_section = section;
+ cache_pc_function_is_gnu_ifunc = TYPE_GNU_IFUNC (SYMBOL_TYPE (f));
+ goto return_cached_value;
}
}
- /* Not in the normal symbol tables, see if the pc is in a known section.
- If it's not, then give up. This ensures that anything beyond the end
- of the text seg doesn't appear to be part of the last function in the
- text segment. */
+ /* Not in the normal symbol tables, see if the pc is in a known
+ section. If it's not, then give up. This ensures that anything
+ beyond the end of the text seg doesn't appear to be part of the
+ last function in the text segment. */
- osect = find_pc_sect_section (mapped_pc, section);
-
- if (!osect)
+ if (!section)
msymbol = NULL;
/* Must be in the minimal symbol table. */
*address = 0;
if (endaddr != NULL)
*endaddr = 0;
+ if (is_gnu_ifunc_p != NULL)
+ *is_gnu_ifunc_p = 0;
return 0;
}
cache_pc_function_low = SYMBOL_VALUE_ADDRESS (msymbol);
- cache_pc_function_name = DEPRECATED_SYMBOL_NAME (msymbol);
+ cache_pc_function_name = SYMBOL_LINKAGE_NAME (msymbol);
cache_pc_function_section = section;
+ cache_pc_function_is_gnu_ifunc = MSYMBOL_TYPE (msymbol) == mst_text_gnu_ifunc;
/* If the minimal symbol has a size, use it for the cache.
Otherwise use the lesser of the next minimal symbol in the same
other sections, to find the next symbol in this section with
a different address. */
- for (i = 1; DEPRECATED_SYMBOL_NAME (msymbol + i) != NULL; i++)
+ for (i = 1; SYMBOL_LINKAGE_NAME (msymbol + i) != NULL; i++)
{
- if (SYMBOL_VALUE_ADDRESS (msymbol + i) != SYMBOL_VALUE_ADDRESS (msymbol)
- && SYMBOL_BFD_SECTION (msymbol + i) == SYMBOL_BFD_SECTION (msymbol))
+ if (SYMBOL_VALUE_ADDRESS (msymbol + i)
+ != SYMBOL_VALUE_ADDRESS (msymbol)
+ && SYMBOL_OBJ_SECTION (msymbol + i)
+ == SYMBOL_OBJ_SECTION (msymbol))
break;
}
- if (DEPRECATED_SYMBOL_NAME (msymbol + i) != NULL
- && SYMBOL_VALUE_ADDRESS (msymbol + i) < obj_section_endaddr (osect))
+ if (SYMBOL_LINKAGE_NAME (msymbol + i) != NULL
+ && SYMBOL_VALUE_ADDRESS (msymbol + i)
+ < obj_section_endaddr (section))
cache_pc_function_high = SYMBOL_VALUE_ADDRESS (msymbol + i);
else
/* We got the start address from the last msymbol in the objfile.
So the end address is the end of the section. */
- cache_pc_function_high = obj_section_endaddr (osect);
+ cache_pc_function_high = obj_section_endaddr (section);
}
return_cached_value:
/* Because the high address is actually beyond the end of
the function (and therefore possibly beyond the end of
the overlay), we must actually convert (high - 1) and
- then add one to that. */
+ then add one to that. */
*endaddr = 1 + overlay_unmapped_address (cache_pc_function_high - 1,
section);
*endaddr = cache_pc_function_high;
}
+ if (is_gnu_ifunc_p)
+ *is_gnu_ifunc_p = cache_pc_function_is_gnu_ifunc;
+
return 1;
}
-/* Return the innermost stack frame executing inside of BLOCK,
- or NULL if there is no such frame. If BLOCK is NULL, just return NULL. */
+/* See find_pc_partial_function_gnu_ifunc, only the IS_GNU_IFUNC_P parameter
+ is omitted here for backward API compatibility. */
+
+int
+find_pc_partial_function (CORE_ADDR pc, const char **name, CORE_ADDR *address,
+ CORE_ADDR *endaddr)
+{
+ return find_pc_partial_function_gnu_ifunc (pc, name, address, endaddr, NULL);
+}
+
+/* Return the innermost stack frame that is executing inside of BLOCK and is
+ at least as old as the selected frame. Return NULL if there is no
+ such frame. If BLOCK is NULL, just return NULL. */
struct frame_info *
-block_innermost_frame (struct block *block)
+block_innermost_frame (const struct block *block)
{
struct frame_info *frame;
- CORE_ADDR start;
- CORE_ADDR end;
- CORE_ADDR calling_pc;
if (block == NULL)
return NULL;
- start = BLOCK_START (block);
- end = BLOCK_END (block);
-
- frame = get_current_frame ();
+ frame = get_selected_frame_if_set ();
+ if (frame == NULL)
+ frame = get_current_frame ();
while (frame != NULL)
{
- calling_pc = get_frame_address_in_block (frame);
- if (calling_pc >= start && calling_pc < end)
+ struct block *frame_block = get_frame_block (frame, NULL);
+ if (frame_block != NULL && contained_in (frame_block, block))
return frame;
frame = get_prev_frame (frame);
projects / deliverable / binutils-gdb.git / blobdiff