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PATCH [2/4] arm: Add Tag_BTI_extension build attribute

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bfd/
2021-07-06  Andrea Corallo  <andrea.corallo@arm.com>

	* elf32-arm.c (elf32_arm_merge_eabi_attributes): Add
	'Tag_BTI_extension' case.

binutils/
2021-07-06  Andrea Corallo  <andrea.corallo@arm.com>

	* readelf.c (arm_attr_tag_PAC_extension): Declare.
	(arm_attr_public_tags): Add 'PAC_extension' lookup.

elfcpp/
2021-07-06  Andrea Corallo  <andrea.corallo@arm.com>

	* arm.h: Define 'Tag_BTI_extension' enum.

gas/
2021-07-06  Andrea Corallo  <andrea.corallo@arm.com>

	* config/tc-arm.c (arm_convert_symbolic_attribute): Add
	'Tag_BTI_extension' to the attribute_table.

include/
2021-07-06  Andrea Corallo  <andrea.corallo@arm.com>

	* elf/arm.h (elf_arm_reloc_type): Add 'Tag_BTI_extension'.
This commit is contained in:
Andrea Corallo 2021-07-05 16:37:19 +02:00
parent 99db83d07d
commit 4b53503018
5 changed files with 10 additions and 0 deletions
Download patch file Download diff file Expand all files Collapse all files

1
bfd/elf32-arm.c
View file

@ -14613,6 +14613,7 @@ elf32_arm_merge_eabi_attributes (bfd *ibfd, struct bfd_link_info *info)
case Tag_MPextension_use: case Tag_MPextension_use:
case Tag_MVE_arch: case Tag_MVE_arch:
case Tag_PAC_extension: case Tag_PAC_extension:
case Tag_BTI_extension:
/* Use the largest value specified. */ /* Use the largest value specified. */
if (in_attr[i].i > out_attr[i].i) if (in_attr[i].i > out_attr[i].i)
out_attr[i].i = in_attr[i].i; out_attr[i].i = in_attr[i].i;

6
binutils/readelf.c
View file

@ -16144,6 +16144,11 @@ static const char * arm_attr_tag_PAC_extension[] =
"PAC/AUT instructions permitted in the NOP space", "PAC/AUT instructions permitted in the NOP space",
"PAC/AUT instructions permitted in the NOP and in the non-NOP space"}; "PAC/AUT instructions permitted in the NOP and in the non-NOP space"};
static const char * arm_attr_tag_BTI_extension[] =
{"BTI instructions not permitted",
"BTI instructions permitted in the NOP space",
"BTI instructions permitted in the NOP and in the non-NOP space"};
#define LOOKUP(id, name) \ #define LOOKUP(id, name) \
{id, #name, 0x80 | ARRAY_SIZE(arm_attr_tag_##name), arm_attr_tag_##name} {id, #name, 0x80 | ARRAY_SIZE(arm_attr_tag_##name), arm_attr_tag_##name}
static arm_attr_public_tag arm_attr_public_tags[] = static arm_attr_public_tag arm_attr_public_tags[] =
@ -16185,6 +16190,7 @@ static arm_attr_public_tag arm_attr_public_tags[] =
LOOKUP(46, DSP_extension), LOOKUP(46, DSP_extension),
LOOKUP(48, MVE_arch), LOOKUP(48, MVE_arch),
LOOKUP(50, PAC_extension), LOOKUP(50, PAC_extension),
LOOKUP(52, BTI_extension),
{64, "nodefaults", 0, NULL}, {64, "nodefaults", 0, NULL},
{65, "also_compatible_with", 0, NULL}, {65, "also_compatible_with", 0, NULL},
LOOKUP(66, T2EE_use), LOOKUP(66, T2EE_use),

1
elfcpp/arm.h
View file

@ -307,6 +307,7 @@ enum
Tag_DIV_use = 44, Tag_DIV_use = 44,
Tag_MVE_arch = 48, Tag_MVE_arch = 48,
Tag_PAC_extension = 50, Tag_PAC_extension = 50,
Tag_BTI_extension = 52,
Tag_nodefaults = 64, Tag_nodefaults = 64,
Tag_also_compatible_with = 65, Tag_also_compatible_with = 65,
Tag_T2EE_use = 66, Tag_T2EE_use = 66,

1
gas/config/tc-arm.c
View file

@ -33517,6 +33517,7 @@ arm_convert_symbolic_attribute (const char *name)
T (Tag_DSP_extension), T (Tag_DSP_extension),
T (Tag_MVE_arch), T (Tag_MVE_arch),
T (Tag_PAC_extension), T (Tag_PAC_extension),
T (Tag_BTI_extension),
/* We deliberately do not include Tag_MPextension_use_legacy. */ /* We deliberately do not include Tag_MPextension_use_legacy. */
#undef T #undef T
}; };

1
include/elf/arm.h
View file

@ -328,6 +328,7 @@ enum
Tag_DSP_extension = 46, Tag_DSP_extension = 46,
Tag_MVE_arch = 48, Tag_MVE_arch = 48,
Tag_PAC_extension = 50, Tag_PAC_extension = 50,
Tag_BTI_extension = 52,
Tag_nodefaults = 64, Tag_nodefaults = 64,
Tag_also_compatible_with, Tag_also_compatible_with,
Tag_T2EE_use, Tag_T2EE_use,