Support TLS variables on FreeBSD/i386.
Derive the pointer to the DTV array from the gs_base register. As with FreeBSD/amd64, gs_base is currently only available via the native target. gdb/ChangeLog: * i386-fbsd-tdep.c (i386fbsd_get_thread_local_address): New. (i386fbsd_init_abi): Install gdbarch "fetch_tls_load_module_address" and "get_thread_local_address" methods.
This commit is contained in:
parent
f5424cfa7e
commit
ce25aa57a3
|
@ -1,3 +1,10 @@
|
|||
2019-03-12 John Baldwin <jhb@FreeBSD.org>
|
||||
|
||||
* i386-fbsd-tdep.c (i386fbsd_get_thread_local_address): New.
|
||||
(i386fbsd_init_abi): Install gdbarch
|
||||
"fetch_tls_load_module_address" and "get_thread_local_address"
|
||||
methods.
|
||||
|
||||
2019-03-12 John Baldwin <jhb@FreeBSD.org>
|
||||
|
||||
* amd64-fbsd-tdep.c (amd64fbsd_get_thread_local_address): New.
|
||||
|
|
|
@ -320,6 +320,30 @@ i386fbsd_iterate_over_regset_sections (struct gdbarch *gdbarch,
|
|||
"XSAVE extended state", cb_data);
|
||||
}
|
||||
|
||||
/* Implement the get_thread_local_address gdbarch method. */
|
||||
|
||||
static CORE_ADDR
|
||||
i386fbsd_get_thread_local_address (struct gdbarch *gdbarch, ptid_t ptid,
|
||||
CORE_ADDR lm_addr, CORE_ADDR offset)
|
||||
{
|
||||
struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
|
||||
struct regcache *regcache;
|
||||
|
||||
if (tdep->fsbase_regnum == -1)
|
||||
error (_("Unable to fetch %%gsbase"));
|
||||
|
||||
regcache = get_thread_arch_regcache (ptid, gdbarch);
|
||||
|
||||
target_fetch_registers (regcache, tdep->fsbase_regnum + 1);
|
||||
|
||||
ULONGEST gsbase;
|
||||
if (regcache->cooked_read (tdep->fsbase_regnum + 1, &gsbase) != REG_VALID)
|
||||
error (_("Unable to fetch %%gsbase"));
|
||||
|
||||
CORE_ADDR dtv_addr = gsbase + gdbarch_ptr_bit (gdbarch) / 8;
|
||||
return fbsd_get_thread_local_address (gdbarch, dtv_addr, lm_addr, offset);
|
||||
}
|
||||
|
||||
static void
|
||||
i386fbsd_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
|
||||
{
|
||||
|
@ -418,6 +442,11 @@ i386fbsd4_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
|
|||
|
||||
set_gdbarch_core_read_description (gdbarch,
|
||||
i386fbsd_core_read_description);
|
||||
|
||||
set_gdbarch_fetch_tls_load_module_address (gdbarch,
|
||||
svr4_fetch_objfile_link_map);
|
||||
set_gdbarch_get_thread_local_address (gdbarch,
|
||||
i386fbsd_get_thread_local_address);
|
||||
}
|
||||
|
||||
void
|
||||
|
|
Loading…
Reference in New Issue