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[PATCH] x86: Properly merge GNU_PROPERTY_X86_ISA_1_USED
- From: "H.J. Lu" <hjl dot tools at gmail dot com>
- To: binutils at sourceware dot org
- Date: Tue, 7 Aug 2018 13:35:08 -0700
- Subject: [PATCH] x86: Properly merge GNU_PROPERTY_X86_ISA_1_USED
Without the GNU_PROPERTY_X86_ISA_1_USED property, all ISAs may be used.
If a bit in the GNU_PROPERTY_X86_ISA_1_USED property is unset, the
corresponding x86 instruction set isn’t used. When merging properties
from 2 input files and one input file doesn't have the
GNU_PROPERTY_X86_ISA_1_USED property, the output file shouldn't have
it neither. This patch removes the GNU_PROPERTY_X86_ISA_1_USED
property if an input file doesn't have it.
This patch replaces the GNU_PROPERTY_X86_ISA_1_USED property with the
GNU_PROPERTY_X86_ISA_1_NEEDED property which is the minimum ISA
requirement.
bfd/
PR ld/23486
* elfxx-x86.c (_bfd_x86_elf_merge_gnu_properties): Remove
GNU_PROPERTY_X86_ISA_1_USED if an input file doesn't have it.
(_bfd_x86_elf_link_setup_gnu_properties): Adding the
GNU_PROPERTY_X86_ISA_1_NEEDED, instead of
GNU_PROPERTY_X86_ISA_1_USED, property.
ld/
PR ld/23486
* testsuite/ld-i386/property-3.r: Remove "x86 ISA used".
* testsuite/ld-i386/property-4.r: Likewise.
* testsuite/ld-i386/property-5.r: Likewise.
* testsuite/ld-i386/property-x86-ibt3a.d: Likewise.
* testsuite/ld-i386/property-x86-ibt3b.d: Likewise.
* testsuite/ld-i386/property-x86-shstk3a.d: Likewise.
* testsuite/ld-i386/property-x86-shstk3b.d: Likewise.
* testsuite/ld-x86-64/property-3.r: Likewise.
* testsuite/ld-x86-64/property-4.r: Likewise.
* testsuite/ld-x86-64/property-5.r: Likewise.
* testsuite/ld-x86-64/property-x86-ibt3a-x32.d: Likewise.
* testsuite/ld-x86-64/property-x86-ibt3a.d: Likewise.
* testsuite/ld-x86-64/property-x86-ibt3b-x32.d: Likewise.
* testsuite/ld-x86-64/property-x86-ibt3b.d: Likewise.
* testsuite/ld-x86-64/property-x86-shstk3a-x32.d: Likewise.
* testsuite/ld-x86-64/property-x86-shstk3a.d: Likewise.
* testsuite/ld-x86-64/property-x86-shstk3b-x32.d: Likewise.
* testsuite/ld-x86-64/property-x86-shstk3b.d: Likewise.
---
bfd/elfxx-x86.c | 25 +++++++++++++++----
ld/testsuite/ld-i386/property-3.r | 1 -
ld/testsuite/ld-i386/property-4.r | 1 -
ld/testsuite/ld-i386/property-5.r | 1 -
ld/testsuite/ld-i386/property-x86-ibt3a.d | 5 ++--
ld/testsuite/ld-i386/property-x86-ibt3b.d | 5 ++--
ld/testsuite/ld-i386/property-x86-shstk3a.d | 5 ++--
ld/testsuite/ld-i386/property-x86-shstk3b.d | 5 ++--
ld/testsuite/ld-x86-64/property-3.r | 1 -
ld/testsuite/ld-x86-64/property-4.r | 1 -
ld/testsuite/ld-x86-64/property-5.r | 1 -
.../ld-x86-64/property-x86-ibt3a-x32.d | 5 ++--
ld/testsuite/ld-x86-64/property-x86-ibt3a.d | 5 ++--
.../ld-x86-64/property-x86-ibt3b-x32.d | 5 ++--
ld/testsuite/ld-x86-64/property-x86-ibt3b.d | 5 ++--
.../ld-x86-64/property-x86-shstk3a-x32.d | 5 ++--
ld/testsuite/ld-x86-64/property-x86-shstk3a.d | 5 ++--
.../ld-x86-64/property-x86-shstk3b-x32.d | 5 ++--
ld/testsuite/ld-x86-64/property-x86-shstk3b.d | 5 ++--
19 files changed, 44 insertions(+), 47 deletions(-)
diff --git a/bfd/elfxx-x86.c b/bfd/elfxx-x86.c
index 2e4ff88f1f..7ccfd25815 100644
--- a/bfd/elfxx-x86.c
+++ b/bfd/elfxx-x86.c
@@ -2407,12 +2407,27 @@ _bfd_x86_elf_merge_gnu_properties (struct bfd_link_info *info,
switch (pr_type)
{
case GNU_PROPERTY_X86_ISA_1_USED:
+ if (aprop == NULL || bprop == NULL)
+ {
+ /* Only one of APROP and BPROP can be NULL. */
+ if (aprop != NULL)
+ {
+ /* Remove this property since the other input file doesn't
+ have it. */
+ aprop->pr_kind = property_remove;
+ updated = TRUE;
+ }
+ break;
+ }
+ goto or_property;
+
case GNU_PROPERTY_X86_ISA_1_NEEDED:
if (aprop != NULL && bprop != NULL)
{
+or_property:
number = aprop->u.number;
aprop->u.number = number | bprop->u.number;
- /* Remove the property if ISA bits are empty. */
+ /* Remove the property if all bits are empty. */
if (aprop->u.number == 0)
{
aprop->pr_kind = property_remove;
@@ -2428,14 +2443,14 @@ _bfd_x86_elf_merge_gnu_properties (struct bfd_link_info *info,
{
if (aprop->u.number == 0)
{
- /* Remove APROP if ISA bits are empty. */
+ /* Remove APROP if all bits are empty. */
aprop->pr_kind = property_remove;
updated = TRUE;
}
}
else
{
- /* Return TRUE if APROP is NULL and ISA bits of BPROP
+ /* Return TRUE if APROP is NULL and all bits of BPROP
aren't empty to indicate that BPROP should be added
to ABFD. */
updated = bprop->u.number != 0;
@@ -2582,9 +2597,9 @@ _bfd_x86_elf_link_setup_gnu_properties
{
/* If the separate code program header is needed, make sure
that the first read-only PT_LOAD segment has no code by
- adding a GNU_PROPERTY_X86_ISA_1_USED note. */
+ adding a GNU_PROPERTY_X86_ISA_1_NEEDED note. */
prop = _bfd_elf_get_property (ebfd,
- GNU_PROPERTY_X86_ISA_1_USED,
+ GNU_PROPERTY_X86_ISA_1_NEEDED,
4);
prop->u.number = GNU_PROPERTY_X86_ISA_1_486;
prop->pr_kind = property_number;
diff --git a/ld/testsuite/ld-i386/property-3.r b/ld/testsuite/ld-i386/property-3.r
index 0ed91f5922..d03203c1e5 100644
--- a/ld/testsuite/ld-i386/property-3.r
+++ b/ld/testsuite/ld-i386/property-3.r
@@ -3,6 +3,5 @@ Displaying notes found in: .note.gnu.property
Owner Data size Description
GNU 0x[0-9a-f]+ NT_GNU_PROPERTY_TYPE_0
Properties: stack size: 0x800000
- x86 ISA used: 586, SSE
x86 ISA needed: i486, 586
#pass
diff --git a/ld/testsuite/ld-i386/property-4.r b/ld/testsuite/ld-i386/property-4.r
index cb2bc15d9a..da295eb6c7 100644
--- a/ld/testsuite/ld-i386/property-4.r
+++ b/ld/testsuite/ld-i386/property-4.r
@@ -3,6 +3,5 @@ Displaying notes found in: .note.gnu.property
Owner Data size Description
GNU 0x[0-9a-f]+ NT_GNU_PROPERTY_TYPE_0
Properties: stack size: 0x800000
- x86 ISA used: i486, 586, SSE
x86 ISA needed: i486, 586, SSE
#pass
diff --git a/ld/testsuite/ld-i386/property-5.r b/ld/testsuite/ld-i386/property-5.r
index 552965058c..e4141594b3 100644
--- a/ld/testsuite/ld-i386/property-5.r
+++ b/ld/testsuite/ld-i386/property-5.r
@@ -3,6 +3,5 @@ Displaying notes found in: .note.gnu.property
Owner Data size Description
GNU 0x[0-9a-f]+ NT_GNU_PROPERTY_TYPE_0
Properties: stack size: 0x900000
- x86 ISA used: i486, 586, SSE
x86 ISA needed: i486, 586, SSE
#pass
diff --git a/ld/testsuite/ld-i386/property-x86-ibt3a.d b/ld/testsuite/ld-i386/property-x86-ibt3a.d
index 4bb35b00fb..0aedea1614 100644
--- a/ld/testsuite/ld-i386/property-x86-ibt3a.d
+++ b/ld/testsuite/ld-i386/property-x86-ibt3a.d
@@ -6,6 +6,5 @@
Displaying notes found in: .note.gnu.property
Owner Data size Description
- GNU 0x00000018 NT_GNU_PROPERTY_TYPE_0
- Properties: x86 ISA used: i486, 586, SSE2, SSE3
- x86 ISA needed: 586, SSE, SSE3, SSE4_1
+ GNU 0x0000000c NT_GNU_PROPERTY_TYPE_0
+ Properties: x86 ISA needed: 586, SSE, SSE3, SSE4_1
diff --git a/ld/testsuite/ld-i386/property-x86-ibt3b.d b/ld/testsuite/ld-i386/property-x86-ibt3b.d
index 418d58a8f7..bd69ac6478 100644
--- a/ld/testsuite/ld-i386/property-x86-ibt3b.d
+++ b/ld/testsuite/ld-i386/property-x86-ibt3b.d
@@ -6,6 +6,5 @@
Displaying notes found in: .note.gnu.property
Owner Data size Description
- GNU 0x00000018 NT_GNU_PROPERTY_TYPE_0
- Properties: x86 ISA used: i486, 586, SSE2, SSE3
- x86 ISA needed: 586, SSE, SSE3, SSE4_1
+ GNU 0x0000000c NT_GNU_PROPERTY_TYPE_0
+ Properties: x86 ISA needed: 586, SSE, SSE3, SSE4_1
diff --git a/ld/testsuite/ld-i386/property-x86-shstk3a.d b/ld/testsuite/ld-i386/property-x86-shstk3a.d
index e261038f60..76d2a39f2c 100644
--- a/ld/testsuite/ld-i386/property-x86-shstk3a.d
+++ b/ld/testsuite/ld-i386/property-x86-shstk3a.d
@@ -6,6 +6,5 @@
Displaying notes found in: .note.gnu.property
Owner Data size Description
- GNU 0x00000018 NT_GNU_PROPERTY_TYPE_0
- Properties: x86 ISA used: i486, 586, SSE2, SSE3
- x86 ISA needed: 586, SSE, SSE3, SSE4_1
+ GNU 0x0000000c NT_GNU_PROPERTY_TYPE_0
+ Properties: x86 ISA needed: 586, SSE, SSE3, SSE4_1
diff --git a/ld/testsuite/ld-i386/property-x86-shstk3b.d b/ld/testsuite/ld-i386/property-x86-shstk3b.d
index 25f3d2361e..e770ecffa5 100644
--- a/ld/testsuite/ld-i386/property-x86-shstk3b.d
+++ b/ld/testsuite/ld-i386/property-x86-shstk3b.d
@@ -6,6 +6,5 @@
Displaying notes found in: .note.gnu.property
Owner Data size Description
- GNU 0x00000018 NT_GNU_PROPERTY_TYPE_0
- Properties: x86 ISA used: i486, 586, SSE2, SSE3
- x86 ISA needed: 586, SSE, SSE3, SSE4_1
+ GNU 0x0000000c NT_GNU_PROPERTY_TYPE_0
+ Properties: x86 ISA needed: 586, SSE, SSE3, SSE4_1
diff --git a/ld/testsuite/ld-x86-64/property-3.r b/ld/testsuite/ld-x86-64/property-3.r
index 0ed91f5922..d03203c1e5 100644
--- a/ld/testsuite/ld-x86-64/property-3.r
+++ b/ld/testsuite/ld-x86-64/property-3.r
@@ -3,6 +3,5 @@ Displaying notes found in: .note.gnu.property
Owner Data size Description
GNU 0x[0-9a-f]+ NT_GNU_PROPERTY_TYPE_0
Properties: stack size: 0x800000
- x86 ISA used: 586, SSE
x86 ISA needed: i486, 586
#pass
diff --git a/ld/testsuite/ld-x86-64/property-4.r b/ld/testsuite/ld-x86-64/property-4.r
index cb2bc15d9a..da295eb6c7 100644
--- a/ld/testsuite/ld-x86-64/property-4.r
+++ b/ld/testsuite/ld-x86-64/property-4.r
@@ -3,6 +3,5 @@ Displaying notes found in: .note.gnu.property
Owner Data size Description
GNU 0x[0-9a-f]+ NT_GNU_PROPERTY_TYPE_0
Properties: stack size: 0x800000
- x86 ISA used: i486, 586, SSE
x86 ISA needed: i486, 586, SSE
#pass
diff --git a/ld/testsuite/ld-x86-64/property-5.r b/ld/testsuite/ld-x86-64/property-5.r
index 552965058c..e4141594b3 100644
--- a/ld/testsuite/ld-x86-64/property-5.r
+++ b/ld/testsuite/ld-x86-64/property-5.r
@@ -3,6 +3,5 @@ Displaying notes found in: .note.gnu.property
Owner Data size Description
GNU 0x[0-9a-f]+ NT_GNU_PROPERTY_TYPE_0
Properties: stack size: 0x900000
- x86 ISA used: i486, 586, SSE
x86 ISA needed: i486, 586, SSE
#pass
diff --git a/ld/testsuite/ld-x86-64/property-x86-ibt3a-x32.d b/ld/testsuite/ld-x86-64/property-x86-ibt3a-x32.d
index 011426f5a4..4cec728dc7 100644
--- a/ld/testsuite/ld-x86-64/property-x86-ibt3a-x32.d
+++ b/ld/testsuite/ld-x86-64/property-x86-ibt3a-x32.d
@@ -6,6 +6,5 @@
Displaying notes found in: .note.gnu.property
Owner Data size Description
- GNU 0x00000018 NT_GNU_PROPERTY_TYPE_0
- Properties: x86 ISA used: 586, SSE, SSE3, SSE4_1
- x86 ISA needed: i486, 586, SSE2, SSE3
+ GNU 0x0000000c NT_GNU_PROPERTY_TYPE_0
+ Properties: x86 ISA needed: i486, 586, SSE2, SSE3
diff --git a/ld/testsuite/ld-x86-64/property-x86-ibt3a.d b/ld/testsuite/ld-x86-64/property-x86-ibt3a.d
index 1b4229a037..a8df49a351 100644
--- a/ld/testsuite/ld-x86-64/property-x86-ibt3a.d
+++ b/ld/testsuite/ld-x86-64/property-x86-ibt3a.d
@@ -6,6 +6,5 @@
Displaying notes found in: .note.gnu.property
Owner Data size Description
- GNU 0x00000020 NT_GNU_PROPERTY_TYPE_0
- Properties: x86 ISA used: 586, SSE, SSE3, SSE4_1
- x86 ISA needed: i486, 586, SSE2, SSE3
+ GNU 0x00000010 NT_GNU_PROPERTY_TYPE_0
+ Properties: x86 ISA needed: i486, 586, SSE2, SSE3
diff --git a/ld/testsuite/ld-x86-64/property-x86-ibt3b-x32.d b/ld/testsuite/ld-x86-64/property-x86-ibt3b-x32.d
index 290ed6abf1..c112626711 100644
--- a/ld/testsuite/ld-x86-64/property-x86-ibt3b-x32.d
+++ b/ld/testsuite/ld-x86-64/property-x86-ibt3b-x32.d
@@ -6,6 +6,5 @@
Displaying notes found in: .note.gnu.property
Owner Data size Description
- GNU 0x00000018 NT_GNU_PROPERTY_TYPE_0
- Properties: x86 ISA used: 586, SSE, SSE3, SSE4_1
- x86 ISA needed: i486, 586, SSE2, SSE3
+ GNU 0x0000000c NT_GNU_PROPERTY_TYPE_0
+ Properties: x86 ISA needed: i486, 586, SSE2, SSE3
diff --git a/ld/testsuite/ld-x86-64/property-x86-ibt3b.d b/ld/testsuite/ld-x86-64/property-x86-ibt3b.d
index 1142e03272..f10dffdc2c 100644
--- a/ld/testsuite/ld-x86-64/property-x86-ibt3b.d
+++ b/ld/testsuite/ld-x86-64/property-x86-ibt3b.d
@@ -6,6 +6,5 @@
Displaying notes found in: .note.gnu.property
Owner Data size Description
- GNU 0x00000020 NT_GNU_PROPERTY_TYPE_0
- Properties: x86 ISA used: 586, SSE, SSE3, SSE4_1
- x86 ISA needed: i486, 586, SSE2, SSE3
+ GNU 0x00000010 NT_GNU_PROPERTY_TYPE_0
+ Properties: x86 ISA needed: i486, 586, SSE2, SSE3
diff --git a/ld/testsuite/ld-x86-64/property-x86-shstk3a-x32.d b/ld/testsuite/ld-x86-64/property-x86-shstk3a-x32.d
index 819542d181..0147a3c7b6 100644
--- a/ld/testsuite/ld-x86-64/property-x86-shstk3a-x32.d
+++ b/ld/testsuite/ld-x86-64/property-x86-shstk3a-x32.d
@@ -6,6 +6,5 @@
Displaying notes found in: .note.gnu.property
Owner Data size Description
- GNU 0x00000018 NT_GNU_PROPERTY_TYPE_0
- Properties: x86 ISA used: 586, SSE, SSE3, SSE4_1
- x86 ISA needed: i486, 586, SSE2, SSE3
+ GNU 0x0000000c NT_GNU_PROPERTY_TYPE_0
+ Properties: x86 ISA needed: i486, 586, SSE2, SSE3
diff --git a/ld/testsuite/ld-x86-64/property-x86-shstk3a.d b/ld/testsuite/ld-x86-64/property-x86-shstk3a.d
index 4c5d0e0a18..1f8c2dc929 100644
--- a/ld/testsuite/ld-x86-64/property-x86-shstk3a.d
+++ b/ld/testsuite/ld-x86-64/property-x86-shstk3a.d
@@ -6,6 +6,5 @@
Displaying notes found in: .note.gnu.property
Owner Data size Description
- GNU 0x00000020 NT_GNU_PROPERTY_TYPE_0
- Properties: x86 ISA used: 586, SSE, SSE3, SSE4_1
- x86 ISA needed: i486, 586, SSE2, SSE3
+ GNU 0x00000010 NT_GNU_PROPERTY_TYPE_0
+ Properties: x86 ISA needed: i486, 586, SSE2, SSE3
diff --git a/ld/testsuite/ld-x86-64/property-x86-shstk3b-x32.d b/ld/testsuite/ld-x86-64/property-x86-shstk3b-x32.d
index ba181e0bc5..7ca2539ca5 100644
--- a/ld/testsuite/ld-x86-64/property-x86-shstk3b-x32.d
+++ b/ld/testsuite/ld-x86-64/property-x86-shstk3b-x32.d
@@ -6,6 +6,5 @@
Displaying notes found in: .note.gnu.property
Owner Data size Description
- GNU 0x00000018 NT_GNU_PROPERTY_TYPE_0
- Properties: x86 ISA used: 586, SSE, SSE3, SSE4_1
- x86 ISA needed: i486, 586, SSE2, SSE3
+ GNU 0x0000000c NT_GNU_PROPERTY_TYPE_0
+ Properties: x86 ISA needed: i486, 586, SSE2, SSE3
diff --git a/ld/testsuite/ld-x86-64/property-x86-shstk3b.d b/ld/testsuite/ld-x86-64/property-x86-shstk3b.d
index 5216f385dd..f66a40e449 100644
--- a/ld/testsuite/ld-x86-64/property-x86-shstk3b.d
+++ b/ld/testsuite/ld-x86-64/property-x86-shstk3b.d
@@ -6,6 +6,5 @@
Displaying notes found in: .note.gnu.property
Owner Data size Description
- GNU 0x00000020 NT_GNU_PROPERTY_TYPE_0
- Properties: x86 ISA used: 586, SSE, SSE3, SSE4_1
- x86 ISA needed: i486, 586, SSE2, SSE3
+ GNU 0x00000010 NT_GNU_PROPERTY_TYPE_0
+ Properties: x86 ISA needed: i486, 586, SSE2, SSE3
--
2.17.1