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[ARM] Store exception handling information per-bfd instead of per-objfile 

Based on feedback from Tromey, update the use of objfile_key in gdb/arm-tdep.c
to use bfd_key instead. That way we don't have to re-create the exception
handling data all over again if it was done before for the same BFD.

gdb/ChangeLog:

2019-10-31  Luis Machado  <luis.machado@linaro.org>

	* arm-tdep.c (arm_exidx_data_key): Use bfd_key instead of
	objfile_key.
	(arm_exidx_new_objfile): Adjust to use objfile->obfd instead of
	objfile to fetch per-bfd data.
	(arm_find_exidx_entry): Likewise.

Change-Id: Ia7b3208ea8d788414600fa6d770ac76db0562859
This commit is contained in:
Luis Machado 2019-10-31 16:30:44 -03:00
parent 75cafaa61a
commit a2726d4ff8
2 changed files with 13 additions and 4 deletions
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8
gdb/ChangeLog
View File

@ -1,3 +1,11 @@
2019-10-31 Luis Machado <luis.machado@linaro.org>
* arm-tdep.c (arm_exidx_data_key): Use bfd_key instead of
objfile_key.
(arm_exidx_new_objfile): Adjust to use objfile->obfd instead of
objfile to fetch per-bfd data.
(arm_find_exidx_entry): Likewise.
2019-10-31 Christian Biesinger <cbiesinger@google.com>
* gdbsupport/agent.c (debug_agent): Change type to bool.

9
gdb/arm-tdep.c
View File

@ -1999,7 +1999,8 @@ struct arm_exidx_data
std::vector<std::vector<arm_exidx_entry>> section_maps;
};
static const struct objfile_key<arm_exidx_data> arm_exidx_data_key;
/* Per-BFD key to store exception handling information. */
static const struct bfd_key<arm_exidx_data> arm_exidx_data_key;
static struct obj_section *
arm_obj_section_from_vma (struct objfile *objfile, bfd_vma vma)
@ -2043,7 +2044,7 @@ arm_exidx_new_objfile (struct objfile *objfile)
LONGEST i;
/* If we've already touched this file, do nothing. */
if (!objfile || arm_exidx_data_key.get (objfile) != NULL)
if (!objfile || arm_exidx_data_key.get (objfile->obfd) != NULL)
return;
/* Read contents of exception table and index. */
@ -2074,7 +2075,7 @@ arm_exidx_new_objfile (struct objfile *objfile)
}
/* Allocate exception table data structure. */
data = arm_exidx_data_key.emplace (objfile);
data = arm_exidx_data_key.emplace (objfile->obfd);
data->section_maps.resize (objfile->obfd->section_count);
/* Fill in exception table. */
@ -2246,7 +2247,7 @@ arm_find_exidx_entry (CORE_ADDR memaddr, CORE_ADDR *start)
struct arm_exidx_data *data;
struct arm_exidx_entry map_key = { memaddr - obj_section_addr (sec), 0 };
data = arm_exidx_data_key.get (sec->objfile);
data = arm_exidx_data_key.get (sec->objfile->obfd);
if (data != NULL)
{
std::vector<arm_exidx_entry> &map