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objtool/x86: Add UDB support

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Per commit 85a2d4a890 ("x86,ibt: Use UDB instead of 0xEA"), make
sure objtool also recognises UDB as a #UD instruction.

Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Alexandre Chartre <alexandre.chartre@oracle.com>
This commit is contained in:
Peter Zijlstra
2025-09-24 15:25:27 +02:00
parent c5df4e1ab8
commit 76e1851a1b
1 changed files with 4 additions and 0 deletions
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4
tools/objtool/arch/x86/decode.c
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@@ -683,6 +683,10 @@ int arch_decode_instruction(struct objtool_file *file, const struct section *sec
insn->type = INSN_SYSRET;
break;
case 0xd6: /* udb */
insn->type = INSN_BUG;
break;
case 0xe0: /* loopne */
case 0xe1: /* loope */
case 0xe2: /* loop */