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Add TLS load module support for FRV.

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This commit is contained in:
Kevin Buettner 2005-03-31 20:39:14 +00:00
parent b275693032
commit 186993b458
4 changed files with 57 additions and 0 deletions
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10
gdb/ChangeLog
View File

@ -1,3 +1,13 @@
2005-03-31 Kevin Buettner <kevinb@redhat.com>
* solib-frv.c (struct lm_info): Add new field ``lm_addr''.
(main_lm_addr): New static global.
(frv_current_sos): Retain the link map address for each entry.
(frv_clear_solib): Clear main_lm_addr.
(frv_fetch_objfile_link_map): New function.
* frv-tdep.c (frv_gdbarch_init): Register TLS load module fetcher.
* frv-tdep.h (frv_fetch_objfile_link_map): Declare.
2005-03-31 Kevin Buettner <kevinb@redhat.com>
* gdbarch.sh (fetch_tls_load_module_address): New architecture method.

4
gdb/frv-tdep.c
View File

@ -1564,6 +1564,10 @@ frv_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches)
/* Set the fallback (prologue based) frame sniffer. */
frame_unwind_append_sniffer (gdbarch, frv_frame_sniffer);
/* Enable TLS support. */
set_gdbarch_fetch_tls_load_module_address (gdbarch,
frv_fetch_objfile_link_map);
return gdbarch;
}

5
gdb/frv-tdep.h
View File

@ -111,3 +111,8 @@ CORE_ADDR frv_fdpic_find_global_pointer (CORE_ADDR addr);
for that function, if one exists. If no canonical descriptor could
be found, return 0. */
CORE_ADDR frv_fdpic_find_canonical_descriptor (CORE_ADDR entry_point);
/* Given an objfile, return the address of its link map. This value is
needed for TLS support. */
CORE_ADDR frv_fetch_objfile_link_map (struct objfile *objfile);

38
gdb/solib-frv.c
View File

@ -201,6 +201,8 @@ struct lm_info
struct int_elf32_fdpic_loadmap *map;
/* The GOT address for this link map entry. */
CORE_ADDR got_value;
/* The link map address, needed for frv_fetch_objfile_link_map(). */
CORE_ADDR lm_addr;
/* Cached dynamic symbol table and dynamic relocs initialized and
used only by find_canonical_descriptor_in_load_object().
@ -341,6 +343,9 @@ open_symbol_file_object (void *from_ttyp)
/* Cached value for lm_base(), below. */
static CORE_ADDR lm_base_cache = 0;
/* Link map address for main module. */
static CORE_ADDR main_lm_addr = 0;
/* Return the address from which the link map chain may be found. On
the FR-V, this may be found in a number of ways. Assuming that the
main executable has already been relocated, the easiest way to find
@ -467,6 +472,7 @@ frv_current_sos (void)
sop->lm_info = xcalloc (1, sizeof (struct lm_info));
sop->lm_info->map = loadmap;
sop->lm_info->got_value = got_addr;
sop->lm_info->lm_addr = lm_addr;
/* Fetch the name. */
addr = extract_unsigned_integer (&lm_buf.l_name,
sizeof (lm_buf.l_name));
@ -491,6 +497,10 @@ frv_current_sos (void)
*sos_next_ptr = sop;
sos_next_ptr = &sop->next;
}
else
{
main_lm_addr = lm_addr;
}
lm_addr = extract_unsigned_integer (&lm_buf.l_next, sizeof (lm_buf.l_next));
}
@ -949,6 +959,7 @@ frv_clear_solib (void)
lm_base_cache = 0;
enable_break1_done = 0;
enable_break2_done = 0;
main_lm_addr = 0;
}
static void
@ -1200,6 +1211,33 @@ find_canonical_descriptor_in_load_object
return addr;
}
/* Given an objfile, return the address of its link map. This value is
needed for TLS support. */
CORE_ADDR
frv_fetch_objfile_link_map (struct objfile *objfile)
{
struct so_list *so;
/* Cause frv_current_sos() to be run if it hasn't been already. */
if (main_lm_addr == 0)
solib_add (0, 0, 0, 1);
/* frv_current_sos() will set main_lm_addr for the main executable. */
if (objfile == symfile_objfile)
return main_lm_addr;
/* The other link map addresses may be found by examining the list
of shared libraries. */
for (so = master_so_list (); so; so = so->next)
{
if (so->objfile == objfile)
return so->lm_info->lm_addr;
}
/* Not found! */
return 0;
}
static struct target_so_ops frv_so_ops;
void