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Fix Xtensa reachable assert. #62

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merged 1 commit into from
Nov 5, 2024

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@Rot127 Rot127 commented Oct 5, 2024

The immediate given to decodeImm8_sh8Operand has been already shifted. Checking if it is an 8bit value fails therefore.

decodeImm8_sh8Operand gets called from XtensaGenDisassemblerTables.inc like this:

...
    if (!Check(S, DecodeARRegisterClass(MI, tmp, Address, Decoder))) { return MCDisassembler::Fail; }
    tmp = fieldFromInstruction(insn, 16, 8) << 8;
    if (!Check(S, decodeImm8_sh8Operand(MI, tmp, Address, Decoder))) { return MCDisassembler::Fail; }
    return S;
...

The immediate given to decodeImm8_sh8Operand has been already shifted.
Checking if it is an 8bit value fails therefore.
@Rot127 Rot127 changed the base branch from auto-sync to auto-sync-18 October 5, 2024 10:03
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Rot127 commented Oct 5, 2024

@andreisfr You maintain the LLVM target?

@Rot127 Rot127 merged commit 290cd07 into capstone-engine:auto-sync-18 Nov 5, 2024
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@Rot127 Rot127 deleted the xtensa-assert branch November 5, 2024 17:03
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Rot127 commented Nov 5, 2024

@imbillow Didn't merge this one. Please check it in the Capstone code.

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2 participants