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elf: Add GNU_PROPERTY_UINT32_AND_XXX/GNU_PROPERTY_UINT32_OR_XXX

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Implement GNU_PROPERTY_UINT32_AND_XXX/GNU_PROPERTY_UINT32_OR_XXX:

https://sourceware.org/pipermail/gnu-gabi/2021q1/000467.html

1. GNU_PROPERTY_UINT32_AND_LO..GNU_PROPERTY_UINT32_AND_HI

 #define GNU_PROPERTY_UINT32_AND_LO 0xb0000000
 #define GNU_PROPERTY_UINT32_AND_HI 0xb0007fff

A bit in the output pr_data field is set only if it is set in all
relocatable input pr_data fields.  If all bits in the the output
pr_data field are zero, this property should be removed from output.

If the bit is 1, all input relocatables have the feature.  If the
bit is 0 or the property is missing, the info is unknown.

2. GNU_PROPERTY_UINT32_OR_LO..GNU_PROPERTY_UINT32_OR_HI

 #define GNU_PROPERTY_UINT32_OR_LO 0xb0008000
 #define GNU_PROPERTY_UINT32_OR_HI 0xb000ffff

A bit in the output pr_data field is set if it is set in any
relocatable input pr_data fields. If all bits in the the output
pr_data field are zero, this property should be removed from output.

If the bit is 1, some input relocatables have the feature.  If the
bit is 0 or the property is missing, the info is unknown.

bfd/

	* elf-properties.c (_bfd_elf_parse_gnu_properties): Handle
	GNU_PROPERTY_UINT32_AND_LO, GNU_PROPERTY_UINT32_AND_HI,
	GNU_PROPERTY_UINT32_OR_LO and GNU_PROPERTY_UINT32_OR_HI.
	(elf_merge_gnu_properties): Likewise.

binutils/

	* readelf.c (print_gnu_property_note): Handle
	GNU_PROPERTY_UINT32_AND_LO, GNU_PROPERTY_UINT32_AND_HI,
	GNU_PROPERTY_UINT32_OR_LO and GNU_PROPERTY_UINT32_OR_HI.

include/

	* elf/common.h (GNU_PROPERTY_UINT32_AND_LO): New.
	(GNU_PROPERTY_UINT32_AND_HI): Likewise.
	(GNU_PROPERTY_UINT32_OR_LO): Likewise.
	(GNU_PROPERTY_UINT32_OR_HI): Likewise.

ld/

	* testsuite/ld-elf/property-and-1.d: New file.
	* testsuite/ld-elf/property-and-1.s: Likewise.
	* testsuite/ld-elf/property-and-2.d: Likewise.
	* testsuite/ld-elf/property-and-2.s: Likewise.
	* testsuite/ld-elf/property-and-3.d: Likewise.
	* testsuite/ld-elf/property-and-3.s: Likewise.
	* testsuite/ld-elf/property-and-4.d: Likewise.
	* testsuite/ld-elf/property-and-empty.s: Likewise.
	* testsuite/ld-elf/property-or-1.d: Likewise.
	* testsuite/ld-elf/property-or-1.s: Likewise.
	* testsuite/ld-elf/property-or-2.d: Likewise.
	* testsuite/ld-elf/property-or-2.s: Likewise.
	* testsuite/ld-elf/property-or-3.d: Likewise.
	* testsuite/ld-elf/property-or-3.s: Likewise.
	* testsuite/ld-elf/property-or-4.d: Likewise.
	* testsuite/ld-elf/property-or-empty.s: Likewise.
This commit is contained in:
H.J. Lu
2021-06-18 07:18:02 -07:00
parent 982c3a65ca
commit 5a767724d7
23 changed files with 353 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

7
bfd/ChangeLog
View File

@ -1,3 +1,10 @@
2021-06-18 H.J. Lu <hongjiu.lu@intel.com>
* elf-properties.c (_bfd_elf_parse_gnu_properties): Handle
GNU_PROPERTY_UINT32_AND_LO, GNU_PROPERTY_UINT32_AND_HI,
GNU_PROPERTY_UINT32_OR_LO and GNU_PROPERTY_UINT32_OR_HI.
(elf_merge_gnu_properties): Likewise.
2021-06-11 Alan Modra <amodra@gmail.com>
PR 27952

90
bfd/elf-properties.c
View File

@ -178,6 +178,25 @@ _bfd_elf_parse_gnu_properties (bfd *abfd, Elf_Internal_Note *note)
goto next;
default:
if ((type >= GNU_PROPERTY_UINT32_AND_LO
&& type <= GNU_PROPERTY_UINT32_AND_HI)
|| (type >= GNU_PROPERTY_UINT32_OR_LO
&& type <= GNU_PROPERTY_UINT32_OR_HI))
{
if (datasz != 4)
{
_bfd_error_handler
(_("error: %pB: <corrupt property (0x%x) size: 0x%x>"),
abfd, type, datasz);
/* Clear all properties. */
elf_properties (abfd) = NULL;
return false;
}
prop = _bfd_elf_get_property (abfd, type, datasz);
prop->u.number |= bfd_h_get_32 (abfd, ptr);
prop->pr_kind = property_number;
goto next;
}
break;
}
}
@ -203,6 +222,8 @@ elf_merge_gnu_properties (struct bfd_link_info *info, bfd *abfd, bfd *bbfd,
{
const struct elf_backend_data *bed = get_elf_backend_data (abfd);
unsigned int pr_type = aprop != NULL ? aprop->pr_type : bprop->pr_type;
unsigned int number;
bool updated;
if (bed->merge_gnu_properties != NULL
&& pr_type >= GNU_PROPERTY_LOPROC
@ -229,6 +250,75 @@ elf_merge_gnu_properties (struct bfd_link_info *info, bfd *abfd, bfd *bbfd,
return aprop == NULL;
default:
updated = false;
if (pr_type >= GNU_PROPERTY_UINT32_OR_LO
&& pr_type <= GNU_PROPERTY_UINT32_OR_HI)
{
if (aprop != NULL && bprop != NULL)
{
number = aprop->u.number;
aprop->u.number = number | bprop->u.number;
/* Remove the property if all bits are empty. */
if (aprop->u.number == 0)
{
aprop->pr_kind = property_remove;
updated = true;
}
else
updated = number != (unsigned int) aprop->u.number;
}
else
{
/* Only one of APROP and BPROP can be NULL. */
if (aprop != NULL)
{
if (aprop->u.number == 0)
{
/* Remove APROP if all bits are empty. */
aprop->pr_kind = property_remove;
updated = true;
}
}
else
{
/* 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;
}
}
return updated;
}
else if (pr_type >= GNU_PROPERTY_UINT32_AND_LO
&& pr_type <= GNU_PROPERTY_UINT32_AND_HI)
{
/* Only one of APROP and BPROP can be NULL:
1. APROP & BPROP when both APROP and BPROP aren't NULL.
2. If APROP is NULL, remove x86 feature.
3. Otherwise, do nothing.
*/
if (aprop != NULL && bprop != NULL)
{
number = aprop->u.number;
aprop->u.number = number & bprop->u.number;
updated = number != (unsigned int) aprop->u.number;
/* Remove the property if all feature bits are cleared. */
if (aprop->u.number == 0)
aprop->pr_kind = property_remove;
}
else
{
/* There should be no AND properties since some input
doesn't have them. */
if (aprop != NULL)
{
aprop->pr_kind = property_remove;
updated = true;
}
}
return updated;
}
/* Never should happen. */
abort ();
}

6
binutils/ChangeLog
View File

@ -1,3 +1,9 @@
2021-06-18 H.J. Lu <hongjiu.lu@intel.com>
* readelf.c (print_gnu_property_note): Handle
GNU_PROPERTY_UINT32_AND_LO, GNU_PROPERTY_UINT32_AND_HI,
GNU_PROPERTY_UINT32_OR_LO and GNU_PROPERTY_UINT32_OR_HI.
2021-06-15 Nick Clifton <nickc@redhat.com>
* readelf.c (get_note_type): Add support for NT_GO_BUILDID.

15
binutils/readelf.c
View File

@ -19507,6 +19507,21 @@ print_gnu_property_note (Filedata * filedata, Elf_Internal_Note * pnote)
goto next;
default:
if ((type >= GNU_PROPERTY_UINT32_AND_LO
&& type <= GNU_PROPERTY_UINT32_AND_HI)
|| (type >= GNU_PROPERTY_UINT32_OR_LO
&& type <= GNU_PROPERTY_UINT32_OR_HI))
{
if (type <= GNU_PROPERTY_UINT32_AND_HI)
printf (_("UINT32_AND (%#x): "), type);
else
printf (_("UINT32_OR (%#x): "), type);
if (datasz != 4)
printf (_("<corrupt length: %#x> "), datasz);
else
printf ("%#x", (unsigned int) byte_get (ptr, 4));
goto next;
}
break;
}
}

7
include/ChangeLog
View File

@ -1,3 +1,10 @@
2021-06-18 H.J. Lu <hongjiu.lu@intel.com>
* elf/common.h (GNU_PROPERTY_UINT32_AND_LO): New.
(GNU_PROPERTY_UINT32_AND_HI): Likewise.
(GNU_PROPERTY_UINT32_OR_LO): Likewise.
(GNU_PROPERTY_UINT32_OR_HI): Likewise.
2021-06-15 Nick Clifton <nickc@redhat.com>
* elf/common.h (NT_GO_BUILDID): Define.

10
include/elf/common.h
View File

@ -782,6 +782,16 @@
#define GNU_PROPERTY_STACK_SIZE 1
#define GNU_PROPERTY_NO_COPY_ON_PROTECTED 2
/* A 4-byte unsigned integer property: A bit is set if it is set in all
relocatable inputs. */
#define GNU_PROPERTY_UINT32_AND_LO 0xb0000000
#define GNU_PROPERTY_UINT32_AND_HI 0xb0007fff
/* A 4-byte unsigned integer property: A bit is set if it is set in any
relocatable inputs. */
#define GNU_PROPERTY_UINT32_OR_LO 0xb0008000
#define GNU_PROPERTY_UINT32_OR_HI 0xb000ffff
/* Processor-specific semantics, lo */
#define GNU_PROPERTY_LOPROC 0xc0000000
/* Processor-specific semantics, hi */

19
ld/ChangeLog
View File

@ -1,3 +1,22 @@
2021-06-18 H.J. Lu <hongjiu.lu@intel.com>
* testsuite/ld-elf/property-and-1.d: New file.
* testsuite/ld-elf/property-and-1.s: Likewise.
* testsuite/ld-elf/property-and-2.d: Likewise.
* testsuite/ld-elf/property-and-2.s: Likewise.
* testsuite/ld-elf/property-and-3.d: Likewise.
* testsuite/ld-elf/property-and-3.s: Likewise.
* testsuite/ld-elf/property-and-4.d: Likewise.
* testsuite/ld-elf/property-and-empty.s: Likewise.
* testsuite/ld-elf/property-or-1.d: Likewise.
* testsuite/ld-elf/property-or-1.s: Likewise.
* testsuite/ld-elf/property-or-2.d: Likewise.
* testsuite/ld-elf/property-or-2.s: Likewise.
* testsuite/ld-elf/property-or-3.d: Likewise.
* testsuite/ld-elf/property-or-3.s: Likewise.
* testsuite/ld-elf/property-or-4.d: Likewise.
* testsuite/ld-elf/property-or-empty.s: Likewise.
2021-06-17 H.J. Lu <hongjiu.lu@intel.com>
PR ld/27973

6
ld/testsuite/ld-elf/property-and-1.d Normal file
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@ -0,0 +1,6 @@
#source: empty.s
#source: property-and-1.s
#as:
#ld: -shared
#readelf: -n
#xfail: ![check_shared_lib_support]

15
ld/testsuite/ld-elf/property-and-1.s Normal file
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@ -0,0 +1,15 @@
.section ".note.gnu.property", "a"
.p2align ALIGN
.long 1f - 0f /* name length */
.long 5f - 2f /* data length */
.long 5 /* note type */
0: .asciz "GNU" /* vendor name */
1:
.p2align ALIGN
2: .long 0xb0007fff /* pr_type. */
.long 4f - 3f /* pr_datasz. */
3:
.long 0x3
4:
.p2align ALIGN
5:

7
ld/testsuite/ld-elf/property-and-2.d Normal file
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@ -0,0 +1,7 @@
#source: property-and-1.s
#source: empty.s
#source: property-and-2.s
#as:
#ld: -shared
#readelf: -n
#xfail: ![check_shared_lib_support]

15
ld/testsuite/ld-elf/property-and-2.s Normal file
View File

@ -0,0 +1,15 @@
.section ".note.gnu.property", "a"
.p2align ALIGN
.long 1f - 0f /* name length */
.long 5f - 2f /* data length */
.long 5 /* note type */
0: .asciz "GNU" /* vendor name */
1:
.p2align ALIGN
2: .long 0xb0007fff /* pr_type. */
.long 4f - 3f /* pr_datasz. */
3:
.long 0x101
4:
.p2align ALIGN
5:

7
ld/testsuite/ld-elf/property-and-3.d Normal file
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@ -0,0 +1,7 @@
#source: property-and-1.s
#source: property-and-empty.s
#source: property-and-2.s
#as:
#ld: -shared
#readelf: -n
#xfail: ![check_shared_lib_support]

15
ld/testsuite/ld-elf/property-and-3.s Normal file
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@ -0,0 +1,15 @@
.section ".note.gnu.property", "a"
.p2align ALIGN
.long 1f - 0f /* name length */
.long 5f - 2f /* data length */
.long 5 /* note type */
0: .asciz "GNU" /* vendor name */
1:
.p2align ALIGN
2: .long 0xb0007fff /* pr_type. */
.long 4f - 3f /* pr_datasz. */
3:
.long 0x1001
4:
.p2align ALIGN
5:

12
ld/testsuite/ld-elf/property-and-4.d Normal file
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@ -0,0 +1,12 @@
#source: property-and-1.s
#source: property-and-2.s
#source: property-and-3.s
#as:
#ld: -shared
#readelf: -n
#xfail: ![check_shared_lib_support]
Displaying notes found in: .note.gnu.property
[ ]+Owner[ ]+Data size[ ]+Description
GNU 0x[0-9a-f]+ NT_GNU_PROPERTY_TYPE_0
Properties: UINT32_AND \(0xb0007fff\): 0x1

15
ld/testsuite/ld-elf/property-and-empty.s Normal file
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@ -0,0 +1,15 @@
.section ".note.gnu.property", "a"
.p2align ALIGN
.long 1f - 0f /* name length */
.long 5f - 2f /* data length */
.long 5 /* note type */
0: .asciz "GNU" /* vendor name */
1:
.p2align ALIGN
2: .long 0xb0007fff /* pr_type. */
.long 4f - 3f /* pr_datasz. */
3:
.long 0x0
4:
.p2align ALIGN
5:

11
ld/testsuite/ld-elf/property-or-1.d Normal file
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@ -0,0 +1,11 @@
#source: empty.s
#source: property-or-1.s
#as:
#ld: -shared
#readelf: -n
#xfail: ![check_shared_lib_support]
Displaying notes found in: .note.gnu.property
[ ]+Owner[ ]+Data size[ ]+Description
GNU 0x[0-9a-f]+ NT_GNU_PROPERTY_TYPE_0
Properties: UINT32_OR \(0xb000ffff\): 0x3

15
ld/testsuite/ld-elf/property-or-1.s Normal file
View File

@ -0,0 +1,15 @@
.section ".note.gnu.property", "a"
.p2align ALIGN
.long 1f - 0f /* name length */
.long 5f - 2f /* data length */
.long 5 /* note type */
0: .asciz "GNU" /* vendor name */
1:
.p2align ALIGN
2: .long 0xb000ffff /* pr_type. */
.long 4f - 3f /* pr_datasz. */
3:
.long 0x3
4:
.p2align ALIGN
5:

12
ld/testsuite/ld-elf/property-or-2.d Normal file
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@ -0,0 +1,12 @@
#source: property-or-1.s
#source: empty.s
#source: property-or-2.s
#as:
#ld: -shared
#readelf: -n
#xfail: ![check_shared_lib_support]
Displaying notes found in: .note.gnu.property
[ ]+Owner[ ]+Data size[ ]+Description
GNU 0x[0-9a-f]+ NT_GNU_PROPERTY_TYPE_0
Properties: UINT32_OR \(0xb000ffff\): 0x103

15
ld/testsuite/ld-elf/property-or-2.s Normal file
View File

@ -0,0 +1,15 @@
.section ".note.gnu.property", "a"
.p2align ALIGN
.long 1f - 0f /* name length */
.long 5f - 2f /* data length */
.long 5 /* note type */
0: .asciz "GNU" /* vendor name */
1:
.p2align ALIGN
2: .long 0xb000ffff /* pr_type. */
.long 4f - 3f /* pr_datasz. */
3:
.long 0x101
4:
.p2align ALIGN
5:

12
ld/testsuite/ld-elf/property-or-3.d Normal file
View File

@ -0,0 +1,12 @@
#source: property-or-1.s
#source: property-and-empty.s
#source: property-or-2.s
#as:
#ld: -shared
#readelf: -n
#xfail: ![check_shared_lib_support]
Displaying notes found in: .note.gnu.property
[ ]+Owner[ ]+Data size[ ]+Description
GNU 0x[0-9a-f]+ NT_GNU_PROPERTY_TYPE_0
Properties: UINT32_OR \(0xb000ffff\): 0x103

15
ld/testsuite/ld-elf/property-or-3.s Normal file
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@ -0,0 +1,15 @@
.section ".note.gnu.property", "a"
.p2align ALIGN
.long 1f - 0f /* name length */
.long 5f - 2f /* data length */
.long 5 /* note type */
0: .asciz "GNU" /* vendor name */
1:
.p2align ALIGN
2: .long 0xb000ffff /* pr_type. */
.long 4f - 3f /* pr_datasz. */
3:
.long 0x1001
4:
.p2align ALIGN
5:

12
ld/testsuite/ld-elf/property-or-4.d Normal file
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@ -0,0 +1,12 @@
#source: property-or-1.s
#source: property-or-2.s
#source: property-or-3.s
#as:
#ld: -shared
#readelf: -n
#xfail: ![check_shared_lib_support]
Displaying notes found in: .note.gnu.property
[ ]+Owner[ ]+Data size[ ]+Description
GNU 0x[0-9a-f]+ NT_GNU_PROPERTY_TYPE_0
Properties: UINT32_OR \(0xb000ffff\): 0x1103

15
ld/testsuite/ld-elf/property-or-empty.s Normal file
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@ -0,0 +1,15 @@
.section ".note.gnu.property", "a"
.p2align ALIGN
.long 1f - 0f /* name length */
.long 5f - 2f /* data length */
.long 5 /* note type */
0: .asciz "GNU" /* vendor name */
1:
.p2align ALIGN
2: .long 0xb000ffff /* pr_type. */
.long 4f - 3f /* pr_datasz. */
3:
.long 0x0
4:
.p2align ALIGN
5: