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Make set_solib_svr4_fetch_link_map_offsets() work as intended.

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This commit is contained in:
Kevin Buettner 2001-09-20 20:07:55 +00:00
parent 2c8721ecf3
commit 1c4dcb5771
2 changed files with 41 additions and 2 deletions
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8
gdb/ChangeLog
View File

@ -1,3 +1,11 @@
2001-09-20 Kevin Buettner <kevinb@redhat.com>
* solib-svr4.c (fetch_link_map_offsets): Add comment.
(fetch_link_map_offsets_init): New static global.
(set_solib_svr4_fetch_link_map_offsets, init_fetch_link_map_offsets):
Revise implementation to use ``fetch_link_map_offsets_init''
instead of ``fetch_link_map_offsets''.
2001-09-20 Alan Modra <amodra@bigpond.net.au> 2001-09-20 Alan Modra <amodra@bigpond.net.au>
* coffread.c: Replace all occurrences of bfd_read with bfd_bread. * coffread.c: Replace all occurrences of bfd_read with bfd_bread.

35
gdb/solib-svr4.c
View File

@ -62,9 +62,21 @@
#endif #endif
static struct link_map_offsets *default_svr4_fetch_link_map_offsets (void); static struct link_map_offsets *default_svr4_fetch_link_map_offsets (void);
/* fetch_link_map_offsets is the pointer to the architecture specific
link map offsets fetching function. It uses the gdbarch_swap
mechanism to change its value when the architecture changes. */
static struct link_map_offsets *(*fetch_link_map_offsets)(void) = static struct link_map_offsets *(*fetch_link_map_offsets)(void) =
default_svr4_fetch_link_map_offsets; default_svr4_fetch_link_map_offsets;
/* fetch_link_map_offsets_init is like the above, but obtains its
value from a call to set_solib_svr4_fetch_link_map_offsets().
This latter function is intended to be called from a *_gdbarch_init()
function. The value of ``fetch_link_map_offsets_init'' is used
to actually set ``fetch_link_map_offsets'' when the architecture
is installed. */
static struct link_map_offsets *(*fetch_link_map_offsets_init)(void) = 0;
/* legacy_svr4_fetch_link_map_offsets_hook is a pointer to a function /* legacy_svr4_fetch_link_map_offsets_hook is a pointer to a function
which is used to fetch link map offsets. It will only be set which is used to fetch link map offsets. It will only be set
by solib-legacy.c, if at all. */ by solib-legacy.c, if at all. */
@ -1642,16 +1654,35 @@ svr4_relocate_section_addresses (struct so_list *so,
sec->endaddr += LM_ADDR (so); sec->endaddr += LM_ADDR (so);
} }
/* set_solib_svr4_fetch_link_map_offsets() is intended to be called by
a <arch>_gdbarch_init() function. It uses ``fetch_link_map_offsets_init''
to temporarily hold a pointer to the link map offsets fetcher for
a particular architecture. Once the architecture is actually installed,
init_fetch_link_map_offsets(), below, will be called to install this
value in ``fetch_link_map_offsets''. After that, the gdbarch_swap
machinery will manage the contents of this variable whenever the
architecture changes. */
void void
set_solib_svr4_fetch_link_map_offsets (struct link_map_offsets *(*flmo) (void)) set_solib_svr4_fetch_link_map_offsets (struct link_map_offsets *(*flmo) (void))
{ {
fetch_link_map_offsets = flmo; fetch_link_map_offsets_init = flmo;
} }
/* Initialize the value of ``fetch_link_map_offsets'' when a new
architecture is created. set_solib_svr4_fetch_link_map_offsets()
is used to set the value that ``fetch_link_map_offsets'' should
be initialized to. */
static void static void
init_fetch_link_map_offsets (void) init_fetch_link_map_offsets (void)
{ {
set_solib_svr4_fetch_link_map_offsets (default_svr4_fetch_link_map_offsets); if (fetch_link_map_offsets_init != NULL)
fetch_link_map_offsets = fetch_link_map_offsets_init;
else
fetch_link_map_offsets = default_svr4_fetch_link_map_offsets;
fetch_link_map_offsets_init = NULL;
} }
static struct target_so_ops svr4_so_ops; static struct target_so_ops svr4_so_ops;