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Re: [PATCH 1/2] elf: Update GNU_PROPERTY_X86_XXX macros [BZ #23797]
On Fri, Nov 9, 2018 at 2:08 AM Florian Weimer <fweimer@redhat.com> wrote:
>
> * H. J. Lu:
>
> > +/* Set by linker to indicate that the property is valid. */
> > +#define GNU_PROPERTY_X86_UINT32_VALID (1U << 31)
>
> This should somehow say that a relocatable link (which is also performed
> by the linker, via ld -r) must not set this bit. Only the final link
> may set it.
>
Like this?
--
H.J.
From 7f16db908aa2b513509321773f32e8db9e932f94 Mon Sep 17 00:00:00 2001
From: "H.J. Lu" <hjl.tools@gmail.com>
Date: Fri, 19 Oct 2018 15:47:43 -0700
Subject: [PATCH 1/2] elf: Update GNU_PROPERTY_X86_XXX macros [BZ #23797]
This patch updates GNU_PROPERTY_X86_XXX macros according to the x86
program property in x86-64 psABI:
https://github.com/hjl-tools/x86-psABI/wiki/x86-64-psABI-property.pdf
1. GNU_PROPERTY_X86_UINT32_AND_XXX: A 4-byte unsigned integer property.
A bit is set if it is set in all relocatable inputs:
#define GNU_PROPERTY_X86_UINT32_AND_LO 0xc0000002
#define GNU_PROPERTY_X86_UINT32_AND_HI 0xc0007fff
2. GNU_PROPERTY_X86_UINT32_OR_XXX: A 4-byte unsigned integer property.
A bit is set if it is set in any relocatable inputs:
#define GNU_PROPERTY_X86_UINT32_OR_LO 0xc0008000
#define GNU_PROPERTY_X86_UINT32_OR_HI 0xc000ffff
3. GNU_PROPERTY_X86_UINT32_OR_AND_XXX: A 4-byte unsigned integer property.
A bit is set if it is set in any relocatable inputs and the property is
present in all relocatable inputs:
#define GNU_PROPERTY_X86_UINT32_OR_AND_LO 0xc0010000
#define GNU_PROPERTY_X86_UINT32_OR_AND_HI 0xc0017fff
4. GNU_PROPERTY_X86_UINT32_VALID: Set by linker to indicate that the
property is valid when creating executables and shared objects.
5. GNU_PROPERTY_X86_FEATURE_2_NEEDED, GNU_PROPERTY_X86_FEATURE_2_USED
and GNU_PROPERTY_X86_FEATURE_2_XXX bits.
GNU_PROPERTY_X86_FEATURE_1_AND is unchanged. GNU_PROPERTY_X86_ISA_1_USED
and GNU_PROPERTY_X86_FEATURE_2_USED are redefined to better support
targeted processors since GNU_PROPERTY_X86_ISA_1_?86 aren't isn't very
useful. A new set of GNU_PROPERTY_X86_ISA_1_XXX bits are defined. The
previous GNU_PROPERTY_X86_ISA_1_XXX macros are removed.
NOTE: The NT_GNU_PROPERTY_TYPE_0 note is used to describe features and
capabilities supported by ELF binaries. Consumers of ELF binaries can
consult the NT_GNU_PROPERTY_TYPE_0 note to make appropriate decisions.
If a consumer of ELF binaries ignores NT_GNU_PROPERTY_TYPE_0 note, nothing
is changed.
[BZ #23797]
* elf.h (GNU_PROPERTY_X86_UINT32_AND_LO): New.
(GNU_PROPERTY_X86_UINT32_AND_HI): Likewise.
(GNU_PROPERTY_X86_UINT32_OR_LO): Likewise.
(GNU_PROPERTY_X86_UINT32_OR_HI): Likewise.
(GNU_PROPERTY_X86_UINT32_OR_AND_LO): Likewise.
(GNU_PROPERTY_X86_UINT32_OR_AND_HI): Likewise.
(GNU_PROPERTY_X86_UINT32_VALID): Likewise.
(GNU_PROPERTY_X86_ISA_1_CMOV): Likewise.
(GNU_PROPERTY_X86_ISA_1_SSE): Likewise.
(GNU_PROPERTY_X86_ISA_1_SSE2): Likewise.
(GNU_PROPERTY_X86_ISA_1_SSE3): Likewise.
(GNU_PROPERTY_X86_ISA_1_SSSE3): Likewise.
(GNU_PROPERTY_X86_ISA_1_SSE4_1): Likewise.
(GNU_PROPERTY_X86_ISA_1_SSE4_2): Likewise.
(GNU_PROPERTY_X86_ISA_1_AVX): Likewise.
(GNU_PROPERTY_X86_ISA_1_AVX2): Likewise.
(GNU_PROPERTY_X86_ISA_1_FMA): Likewise.
(GNU_PROPERTY_X86_ISA_1_AVX512F): Likewise.
(GNU_PROPERTY_X86_ISA_1_AVX512CD): Likewise.
(GNU_PROPERTY_X86_ISA_1_AVX512ER): Likewise.
(GNU_PROPERTY_X86_ISA_1_AVX512PF): Likewise.
(GNU_PROPERTY_X86_ISA_1_AVX512VL): Likewise.
(GNU_PROPERTY_X86_ISA_1_AVX512DQ): Likewise.
(GNU_PROPERTY_X86_ISA_1_AVX512BW): Likewise.
(GNU_PROPERTY_X86_ISA_1_AVX512_4FMAPS): Likewise.
(GNU_PROPERTY_X86_ISA_1_AVX512_4VNNIW): Likewise.
(GNU_PROPERTY_X86_ISA_1_AVX512_BITALG): Likewise.
(GNU_PROPERTY_X86_ISA_1_AVX512_IFMA): Likewise.
(GNU_PROPERTY_X86_ISA_1_AVX512_VBMI): Likewise.
(GNU_PROPERTY_X86_ISA_1_AVX512_VBMI2): Likewise.
(GNU_PROPERTY_X86_ISA_1_AVX512_VNNI): Likewise.
(GNU_PROPERTY_X86_FEATURE_2_X86): Likewise.
(GNU_PROPERTY_X86_FEATURE_2_X87): Likewise.
(GNU_PROPERTY_X86_FEATURE_2_MMX): Likewise.
(GNU_PROPERTY_X86_FEATURE_2_XMM): Likewise.
(GNU_PROPERTY_X86_FEATURE_2_YMM): Likewise.
(GNU_PROPERTY_X86_FEATURE_2_ZMM): Likewise.
(GNU_PROPERTY_X86_FEATURE_2_FXSR): Likewise.
(GNU_PROPERTY_X86_FEATURE_2_XSAVE): Likewise.
(GNU_PROPERTY_X86_FEATURE_2_XSAVEOPT): Likewise.
(GNU_PROPERTY_X86_FEATURE_2_XSAVEC): Likewise.
(GNU_PROPERTY_X86_FEATURE_1_AND): Updated to
(GNU_PROPERTY_X86_UINT32_AND_LO + 0).
(GNU_PROPERTY_X86_ISA_1_NEEDED): Defined to
(GNU_PROPERTY_X86_UINT32_OR_LO + 0).
(GNU_PROPERTY_X86_FEATURE_2_NEEDED): New. Defined to
(GNU_PROPERTY_X86_UINT32_OR_LO + 1).
(GNU_PROPERTY_X86_ISA_1_USED): Defined to
(GNU_PROPERTY_X86_UINT32_OR_AND_LO + 0).
(GNU_PROPERTY_X86_FEATURE_2_USED): New. Defined to
(GNU_PROPERTY_X86_UINT32_OR_AND_LO + 1).
---
elf/elf.h | 99 +++++++++++++++++++++++++++++++++++++++++--------------
1 file changed, 74 insertions(+), 25 deletions(-)
diff --git a/elf/elf.h b/elf/elf.h
index 69ffa2ec0e..6a21b119b0 100644
--- a/elf/elf.h
+++ b/elf/elf.h
@@ -1307,33 +1307,82 @@ typedef struct
/* Application-specific semantics, hi */
#define GNU_PROPERTY_HIUSER 0xffffffff
-/* The x86 instruction sets indicated by the corresponding bits are
- used in program. Their support in the hardware is optional. */
-#define GNU_PROPERTY_X86_ISA_1_USED 0xc0000000
+/* A 4-byte unsigned integer property: A bit is set if it is set in all
+ relocatable inputs. */
+#define GNU_PROPERTY_X86_UINT32_AND_LO 0xc0000002
+#define GNU_PROPERTY_X86_UINT32_AND_HI 0xc0007fff
+
+/* A 4-byte unsigned integer property: A bit is set if it is set in any
+ relocatable inputs. */
+#define GNU_PROPERTY_X86_UINT32_OR_LO 0xc0008000
+#define GNU_PROPERTY_X86_UINT32_OR_HI 0xc000ffff
+
+/* A 4-byte unsigned integer property: A bit is set if it is set in any
+ relocatable inputs and the property is present in all relocatable
+ inputs. */
+#define GNU_PROPERTY_X86_UINT32_OR_AND_LO 0xc0010000
+#define GNU_PROPERTY_X86_UINT32_OR_AND_HI 0xc0017fff
+
+/* X86 processor-specific features used in program. */
+#define GNU_PROPERTY_X86_FEATURE_1_AND \
+ (GNU_PROPERTY_X86_UINT32_AND_LO + 0)
+
/* The x86 instruction sets indicated by the corresponding bits are
used in program and they must be supported by the hardware. */
-#define GNU_PROPERTY_X86_ISA_1_NEEDED 0xc0000001
-/* X86 processor-specific features used in program. */
-#define GNU_PROPERTY_X86_FEATURE_1_AND 0xc0000002
-
-#define GNU_PROPERTY_X86_ISA_1_486 (1U << 0)
-#define GNU_PROPERTY_X86_ISA_1_586 (1U << 1)
-#define GNU_PROPERTY_X86_ISA_1_686 (1U << 2)
-#define GNU_PROPERTY_X86_ISA_1_SSE (1U << 3)
-#define GNU_PROPERTY_X86_ISA_1_SSE2 (1U << 4)
-#define GNU_PROPERTY_X86_ISA_1_SSE3 (1U << 5)
-#define GNU_PROPERTY_X86_ISA_1_SSSE3 (1U << 6)
-#define GNU_PROPERTY_X86_ISA_1_SSE4_1 (1U << 7)
-#define GNU_PROPERTY_X86_ISA_1_SSE4_2 (1U << 8)
-#define GNU_PROPERTY_X86_ISA_1_AVX (1U << 9)
-#define GNU_PROPERTY_X86_ISA_1_AVX2 (1U << 10)
-#define GNU_PROPERTY_X86_ISA_1_AVX512F (1U << 11)
-#define GNU_PROPERTY_X86_ISA_1_AVX512CD (1U << 12)
-#define GNU_PROPERTY_X86_ISA_1_AVX512ER (1U << 13)
-#define GNU_PROPERTY_X86_ISA_1_AVX512PF (1U << 14)
-#define GNU_PROPERTY_X86_ISA_1_AVX512VL (1U << 15)
-#define GNU_PROPERTY_X86_ISA_1_AVX512DQ (1U << 16)
-#define GNU_PROPERTY_X86_ISA_1_AVX512BW (1U << 17)
+#define GNU_PROPERTY_X86_ISA_1_NEEDED \
+ (GNU_PROPERTY_X86_UINT32_OR_LO + 0)
+#define GNU_PROPERTY_X86_FEATURE_2_NEEDED \
+ (GNU_PROPERTY_X86_UINT32_OR_LO + 1)
+
+/* The x86 instruction sets indicated by the corresponding bits are
+ used in program. Their support in the hardware is optional. */
+#define GNU_PROPERTY_X86_ISA_1_USED \
+ (GNU_PROPERTY_X86_UINT32_OR_AND_LO + 0)
+#define GNU_PROPERTY_X86_FEATURE_2_USED \
+ (GNU_PROPERTY_X86_UINT32_OR_AND_LO + 1)
+
+/* Set by linker to indicate that the property is valid when creating
+ executables and shared objects. */
+#define GNU_PROPERTY_X86_UINT32_VALID (1U << 31)
+
+#define GNU_PROPERTY_X86_FEATURE_1_IBT (1U << 0)
+#define GNU_PROPERTY_X86_FEATURE_1_SHSTK (1U << 1)
+
+#define GNU_PROPERTY_X86_ISA_1_CMOV (1U << 0)
+#define GNU_PROPERTY_X86_ISA_1_SSE (1U << 1)
+#define GNU_PROPERTY_X86_ISA_1_SSE2 (1U << 2)
+#define GNU_PROPERTY_X86_ISA_1_SSE3 (1U << 3)
+#define GNU_PROPERTY_X86_ISA_1_SSSE3 (1U << 4)
+#define GNU_PROPERTY_X86_ISA_1_SSE4_1 (1U << 5)
+#define GNU_PROPERTY_X86_ISA_1_SSE4_2 (1U << 6)
+#define GNU_PROPERTY_X86_ISA_1_AVX (1U << 7)
+#define GNU_PROPERTY_X86_ISA_1_AVX2 (1U << 8)
+#define GNU_PROPERTY_X86_ISA_1_FMA (1U << 9)
+#define GNU_PROPERTY_X86_ISA_1_AVX512F (1U << 10)
+#define GNU_PROPERTY_X86_ISA_1_AVX512CD (1U << 11)
+#define GNU_PROPERTY_X86_ISA_1_AVX512ER (1U << 12)
+#define GNU_PROPERTY_X86_ISA_1_AVX512PF (1U << 13)
+#define GNU_PROPERTY_X86_ISA_1_AVX512VL (1U << 14)
+#define GNU_PROPERTY_X86_ISA_1_AVX512DQ (1U << 15)
+#define GNU_PROPERTY_X86_ISA_1_AVX512BW (1U << 16)
+#define GNU_PROPERTY_X86_ISA_1_AVX512_4FMAPS (1U << 17)
+#define GNU_PROPERTY_X86_ISA_1_AVX512_4VNNIW (1U << 18)
+#define GNU_PROPERTY_X86_ISA_1_AVX512_BITALG (1U << 19)
+#define GNU_PROPERTY_X86_ISA_1_AVX512_IFMA (1U << 20)
+#define GNU_PROPERTY_X86_ISA_1_AVX512_VBMI (1U << 21)
+#define GNU_PROPERTY_X86_ISA_1_AVX512_VBMI2 (1U << 22)
+#define GNU_PROPERTY_X86_ISA_1_AVX512_VNNI (1U << 23)
+
+#define GNU_PROPERTY_X86_FEATURE_2_X86 (1U << 0)
+#define GNU_PROPERTY_X86_FEATURE_2_X87 (1U << 1)
+#define GNU_PROPERTY_X86_FEATURE_2_MMX (1U << 2)
+#define GNU_PROPERTY_X86_FEATURE_2_XMM (1U << 3)
+#define GNU_PROPERTY_X86_FEATURE_2_YMM (1U << 4)
+#define GNU_PROPERTY_X86_FEATURE_2_ZMM (1U << 5)
+#define GNU_PROPERTY_X86_FEATURE_2_FXSR (1U << 6)
+#define GNU_PROPERTY_X86_FEATURE_2_XSAVE (1U << 7)
+#define GNU_PROPERTY_X86_FEATURE_2_XSAVEOPT (1U << 8)
+#define GNU_PROPERTY_X86_FEATURE_2_XSAVEC (1U << 9)
/* This indicates that all executable sections are compatible with
IBT. */
--
2.19.1