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PR28959, obdump doesn't disassemble mftb instruction

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Without a -M cpu option given, powerpc objdump defaults currently to
-Mpower10 but -Many is also given.  Commit 1ff6a3b8e562 regressed
-Many disassembly of instructions that are encoded differently
depending on cpu, such as mftb which has pre- and post-power4
encodings.

	PR 28959
	* ppc-dis.c (lookup_powerpc): Revert 2021-05-28 change.  Instead
	only look at deprecated PPC_OPCODE_RAW bit when -Many.
This commit is contained in:
Alan Modra
2022-03-13 22:54:25 +10:30
parent 4f4a30bee6
commit b508e46bf9
1 changed files with 3 additions and 2 deletions
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5
opcodes/ppc-dis.c
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@ -598,8 +598,9 @@ lookup_powerpc (uint64_t insn, ppc_cpu_t dialect)
if ((insn & opcode->mask) != opcode->opcode
|| ((dialect & PPC_OPCODE_ANY) == 0
&& (opcode->flags & dialect) == 0)
|| (opcode->deprecated & dialect) != 0)
&& ((opcode->flags & dialect) == 0
|| (opcode->deprecated & dialect) != 0))
|| (opcode->deprecated & dialect & PPC_OPCODE_RAW) != 0)
continue;
/* Check validity of operands. */