[PATCH] Add 3 new PAC-related ARM note types
Luis Machado
luis.machado@linaro.org
Thu Aug 5 17:07:02 GMT 2021
The following patch synchronizes includes/objdump/readelf with the Linux
Kernel in terms of ARM regset notes.
We're currently missing 3 of them:
NT_ARM_PACA_KEYS
NT_ARM_PACG_KEYS
NT_ARM_PAC_ENABLED_KEYS
We don't need GDB to bother with this at the moment, so this doesn't update
bfd/elf.c. If needed, we can do it in the future.
binutils/
* readelf.c (get_note_type): Handle new ARM PAC notes.
include/elf/
* common.h (NT_ARM_PACA_KEYS, NT_ARM_PACG_KEYS)
(NT_ARM_PAC_ENABLED_KEYS): New constants.
---
binutils/readelf.c | 6 ++++++
include/elf/common.h | 9 +++++++++
2 files changed, 15 insertions(+)
diff --git a/binutils/readelf.c b/binutils/readelf.c
index bd16fcc77ad..bedd3893b59 100644
--- a/binutils/readelf.c
+++ b/binutils/readelf.c
@@ -18828,8 +18828,14 @@ get_note_type (Filedata * filedata, unsigned e_type)
return _("NT_ARM_SVE (AArch SVE registers)");
case NT_ARM_PAC_MASK:
return _("NT_ARM_PAC_MASK (AArch pointer authentication code masks)");
+ case NT_ARM_PACA_KEYS:
+ return _("NT_ARM_PACA_KEYS (ARM pointer authentication address keys)");
+ case NT_ARM_PACG_KEYS:
+ return _("NT_ARM_PACG_KEYS (ARM pointer authentication generic keys)");
case NT_ARM_TAGGED_ADDR_CTRL:
return _("NT_ARM_TAGGED_ADDR_CTRL (AArch tagged address control)");
+ case NT_ARM_PAC_ENABLED_KEYS:
+ return _("NT_ARM_PAC_ENABLED_KEYS (AArch64 pointer authentication enabled keys)");
case NT_ARC_V2:
return _("NT_ARC_V2 (ARC HS accumulator/extra registers)");
case NT_RISCV_CSR:
diff --git a/include/elf/common.h b/include/elf/common.h
index 0d381f0d27b..95ade894e98 100644
--- a/include/elf/common.h
+++ b/include/elf/common.h
@@ -672,9 +672,18 @@
/* note name must be "LINUX". */
#define NT_ARM_PAC_MASK 0x406 /* AArch pointer authentication code masks */
/* note name must be "LINUX". */
+#define NT_ARM_PACA_KEYS 0x407 /* ARM pointer authentication address
+ keys */
+ /* note name must be "LINUX". */
+#define NT_ARM_PACG_KEYS 0x408 /* ARM pointer authentication generic
+ keys */
+ /* note name must be "LINUX". */
#define NT_ARM_TAGGED_ADDR_CTRL 0x409 /* AArch64 tagged address control
(prctl()) */
/* note name must be "LINUX". */
+#define NT_ARM_PAC_ENABLED_KEYS 0x40a /* AArch64 pointer authentication
+ enabled keys (prctl()) */
+ /* note name must be "LINUX". */
#define NT_ARC_V2 0x600 /* ARC HS accumulator/extra registers. */
/* note name must be "LINUX". */
#define NT_RISCV_CSR 0x900 /* RISC-V Control and Status Registers */
--
2.25.1
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