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6809: JMP extended indirect does not disassemble #4600

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drovak opened this issue Sep 15, 2022 · 1 comment
Closed

6809: JMP extended indirect does not disassemble #4600

drovak opened this issue Sep 15, 2022 · 1 comment
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@GhidorahRex
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Feature: Processor/MC6800 Status: Internal This is being tracked internally by the Ghidra team
Milestone
10.2

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@drovak
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drovak commented Sep 15, 2022

The byte pattern "6E 9F 58 3E" should disassemble to "JMP [DAT_583e]" but instead is reported as a bad instruction.

To reproduce, load a binary containing the byte pattern above and attempt to disassemble using the 6809 processor module.

Expected behavior is stated above.

Problem appears to be in 6x09.sinc, line 325.

  • OS: Ubuntu 18.04.6 LTS
  • Java Version: 11.0.16
  • Ghidra Version: 10.1.5
  • Ghidra Origin: official GitHub distro
@ryanmkurtz ryanmkurtz added the Status: Triage Information is being gathered label Sep 15, 2022
@drovak
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drovak commented Sep 15, 2022

This disassembled correctly in 9.2.2. Seems like line 325 was changed perhaps in an attempt to support the 6309? Not sure exactly.

@GhidorahRex GhidorahRex added Status: Internal This is being tracked internally by the Ghidra team and removed Status: Triage Information is being gathered labels Sep 29, 2022
@GhidorahRex GhidorahRex mentioned this issue Sep 30, 2022
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@ryanmkurtz ryanmkurtz added this to the 10.1.6 milestone Oct 12, 2022
@ryanmkurtz ryanmkurtz modified the milestones: 10.1.6, 10.2 Nov 1, 2022
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Feature: Processor/MC6800 Status: Internal This is being tracked internally by the Ghidra team
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Milestone
10.2
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@drovak @ryanmkurtz @GhidorahRex