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aarch64: simplify the DT_AARCH64_VARIANT_PCS handling code

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Remove unnecessary variant_pcs field: the dynamic tag can be checked
directly.

	* sysdeps/aarch64/dl-machine.h (elf_machine_runtime_setup): Remove the
	DT_AARCH64_VARIANT_PCS check.
	(elf_machine_lazy_rel): Use l_info[DT_AARCH64 (VARIANT_PCS)].
	* sysdeps/aarch64/linkmap.h (struct link_map_machine): Remove
	variant_pcs.
This commit is contained in:
Szabolcs Nagy 2019-07-09 12:11:39 +01:00
parent 32b8188ac8
commit 30ba037546
3 changed files with 9 additions and 6 deletions
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8
ChangeLog
View File

@ -1,3 +1,11 @@
2019-07-10 Szabolcs Nagy <szabolcs.nagy@arm.com>
* sysdeps/aarch64/dl-machine.h (elf_machine_runtime_setup): Remove the
DT_AARCH64_VARIANT_PCS check.
(elf_machine_lazy_rel): Use l_info[DT_AARCH64 (VARIANT_PCS)].
* sysdeps/aarch64/linkmap.h (struct link_map_machine): Remove
variant_pcs.
2019-07-10 Andreas Schwab <schwab@suse.de>
[BZ #23352]

6
sysdeps/aarch64/dl-machine.h
View File

@ -105,10 +105,6 @@ elf_machine_runtime_setup (struct link_map *l, int lazy, int profile)
}
}
/* Check if STO_AARCH64_VARIANT_PCS needs to be handled. */
if (l->l_info[DT_AARCH64 (VARIANT_PCS)])
l->l_mach.variant_pcs = 1;
return lazy;
}
@ -402,7 +398,7 @@ elf_machine_lazy_rel (struct link_map *map,
return;
}
if (__glibc_unlikely (map->l_mach.variant_pcs))
if (__glibc_unlikely (map->l_info[DT_AARCH64 (VARIANT_PCS)] != NULL))
{
/* Check the symbol table for variant PCS symbols. */
const Elf_Symndx symndx = ELFW (R_SYM) (reloc->r_info);

1
sysdeps/aarch64/linkmap.h
View File

@ -20,5 +20,4 @@ struct link_map_machine
{
ElfW(Addr) plt; /* Address of .plt */
void *tlsdesc_table; /* Address of TLS descriptor hash table. */
int variant_pcs; /* If set, PLT calls may follow a variant PCS. */
};