* [PATCH][Binutils, readelf] arm: Support for new pacbti unwind opcode 0xb5.
@ 2022-11-11 10:53 Srinath Parvathaneni
2022-11-14 14:21 ` Nick Clifton
0 siblings, 1 reply; 2+ messages in thread
From: Srinath Parvathaneni @ 2022-11-11 10:53 UTC (permalink / raw)
To: binutils; +Cc: nd, richard.earnshaw, nickc
[-- Attachment #1: Type: text/plain, Size: 1312 bytes --]
Hi,
This patch adds readelf support for decoding the exception table opcode "0xb5",
which indicates to use effective vsp as modifier for PAC validation as defined
by EHABI (https://github.com/ARM-software/abi-aa/releases/download/2022Q3/ehabi32.pdf
Section 10.3).
The testcase for this support is in the continuation patch
https://sourceware.org/pipermail/binutils/2022-November/124328.html
Regression testing for arm-none-eabi target and found no regressions.
Ok for binutils-master?
Regards,
Srinath.
binutils/ChangeLog:
2022-11-07 Srinath Parvathaneni <srinath.parvathaneni@arm.com>
* readelf.c (decode_arm_unwind_bytecode): Add entry to decode opcode
0xb5.
############### Attachment also inlined for ease of reply ###############
diff --git a/binutils/readelf.c b/binutils/readelf.c
index 4d8e540b39b1a7089bbb31026ddbc597e3621731..c8323539a21f3d3ba757e364c06c3dc0e6e7fade 100644
--- a/binutils/readelf.c
+++ b/binutils/readelf.c
@@ -9916,6 +9916,8 @@ decode_arm_unwind_bytecode (Filedata * filedata,
}
else if (op == 0xb4)
printf (_(" pop {ra_auth_code}"));
+ else if (op == 0xb5)
+ printf (_(" vsp as modifier for PAC validation"));
else if ((op & 0xf8) == 0xb8 || (op & 0xf8) == 0xd0)
{
unsigned int count = op & 0x07;
[-- Attachment #2: rb16525.patch --]
[-- Type: text/plain, Size: 547 bytes --]
diff --git a/binutils/readelf.c b/binutils/readelf.c
index 4d8e540b39b1a7089bbb31026ddbc597e3621731..c8323539a21f3d3ba757e364c06c3dc0e6e7fade 100644
--- a/binutils/readelf.c
+++ b/binutils/readelf.c
@@ -9916,6 +9916,8 @@ decode_arm_unwind_bytecode (Filedata * filedata,
}
else if (op == 0xb4)
printf (_(" pop {ra_auth_code}"));
+ else if (op == 0xb5)
+ printf (_(" vsp as modifier for PAC validation"));
else if ((op & 0xf8) == 0xb8 || (op & 0xf8) == 0xd0)
{
unsigned int count = op & 0x07;
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: [PATCH][Binutils, readelf] arm: Support for new pacbti unwind opcode 0xb5.
2022-11-11 10:53 [PATCH][Binutils, readelf] arm: Support for new pacbti unwind opcode 0xb5 Srinath Parvathaneni
@ 2022-11-14 14:21 ` Nick Clifton
0 siblings, 0 replies; 2+ messages in thread
From: Nick Clifton @ 2022-11-14 14:21 UTC (permalink / raw)
To: Srinath Parvathaneni, binutils; +Cc: nd, richard.earnshaw
Hi Srinath,
> 2022-11-07 Srinath Parvathaneni <srinath.parvathaneni@arm.com>
>
> * readelf.c (decode_arm_unwind_bytecode): Add entry to decode opcode
> 0xb5.
Approved - please apply.
Cheers
Nick
^ permalink raw reply [flat|nested] 2+ messages in thread
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