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[readelf] arm: Support for new pacbti unwind opcode 0xb5.

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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).

binutils/ChangeLog:

2022-11-07  Srinath Parvathaneni  <srinath.parvathaneni@arm.com>

        * readelf.c (decode_arm_unwind_bytecode): Add entry to decode opcode 0xb5.
This commit is contained in:
Srinath Parvathaneni 2022-11-14 15:11:49 +00:00
parent a5b6e43669
commit b62fb887c6
1 changed files with 2 additions and 0 deletions
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2
binutils/readelf.c
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@ -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;