History log of /llvm-project/llvm/unittests/MC/X86/X86MCDisassemblerTest.cpp (Results 1 – 3 of 3)
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# 8f6512fe 31-May-2022 Maksim Panchenko <maks@fb.com>

[X86][Disassembler] Fix displacement operand size for symbolizer

On 64-bit X86, 0x66 operand-size override prefix will change the size of
the instruction operand, e.g. from 32 bits to 16 bits, but i

[X86][Disassembler] Fix displacement operand size for symbolizer

On 64-bit X86, 0x66 operand-size override prefix will change the size of
the instruction operand, e.g. from 32 bits to 16 bits, but it will not
modify the size of the displacement operand used for memory addressing,
which will always be 32 bits.

Reviewed By: skan, rafauler

Differential Revision: https://reviews.llvm.org/D126726

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Revision tags: llvmorg-14.0.4
# bed9efed 19-May-2022 Maksim Panchenko <maks@fb.com>

[MCDisassembler] Disambiguate Size parameter in tryAddingSymbolicOperand()

MCSymbolizer::tryAddingSymbolicOperand() overloaded the Size parameter
to specify either the instruction size or the operan

[MCDisassembler] Disambiguate Size parameter in tryAddingSymbolicOperand()

MCSymbolizer::tryAddingSymbolicOperand() overloaded the Size parameter
to specify either the instruction size or the operand size depending on
the architecture. However, for proper symbolic disassembly on X86, we
need to know both sizes, as an instruction can have two operands, and
the instruction size cannot be reliably calculated based on the operand
offset and its size. Hence, split Size into OpSize and InstSize.

For X86, the new interface allows to fix a couple of issues:
* Correctly adjust the value of PC-relative operands.
* Set operand size to zero when the operand is specified implicitly.

Differential Revision: https://reviews.llvm.org/D126101

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Revision tags: llvmorg-14.0.3, llvmorg-14.0.2, llvmorg-14.0.1, llvmorg-14.0.0, llvmorg-14.0.0-rc4, llvmorg-14.0.0-rc3
# 0c2b43ab 07-Mar-2022 Maksim Panchenko <maks@fb.com>

[X86] Fix MCSymbolizer interface for X86Disassembler

Fix a number of issues with MCSymbolizer::tryAddingSymbolicOperand()
in X86Disassembler:

* Pass instruction size instead of immediate size.

[X86] Fix MCSymbolizer interface for X86Disassembler

Fix a number of issues with MCSymbolizer::tryAddingSymbolicOperand()
in X86Disassembler:

* Pass instruction size instead of immediate size.
* Correctly adjust the value of PC-relative operands.
* Set operand offset to zero when the operand is specified
implicitly.

Reviewed By: Amir, skan

Differential Revision: https://reviews.llvm.org/D121065

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