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LibX86: Disassemble BSWAP

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This commit is contained in:
Andreas Kling 2020-04-30 22:06:57 +02:00
parent a40aa80df1
commit fec52fa94b
Notes: sideshowbarker 2024-07-19 07:09:04 +09:00 
Author: https://github.com/awesomekling
Commit: https://github.com/SerenityOS/serenity/commit/fec52fa94b1
1 changed files with 8 additions and 1 deletions
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9
Libraries/LibX86/Instruction.cpp
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@ -830,6 +830,10 @@ void build_opcode_tables_if_needed()
build0F(0xBD, "BSR", OP_reg16_RM16, OP_reg32_RM32);
build0F(0xBE, "MOVSX", OP_reg16_RM8, OP_reg32_RM8);
build0F(0xBF, "0xBF", OP, "MOVSX", OP_reg32_RM16);
for (u8 i = 0xc8; i <= 0xcf; ++i)
build0F(i, "BSWAP", OP_reg32);
build0F(0xFC, "PADDB", OP_mm1_mm2m64);
build0F(0xFD, "PADDW", OP_mm1_mm2m64);
build0F(0xFE, "PADDD", OP_mm1_mm2m64);
@ -928,7 +932,10 @@ Instruction::Instruction(InstructionStream& stream, bool o32, bool a32)
m_modrm.decode(stream, m_a32);
m_register_index = (m_modrm.m_rm >> 3) & 7;
} else {
m_register_index = m_op & 7;
if (m_has_sub_op)
m_register_index = m_sub_op & 7;
else
m_register_index = m_op & 7;
}
bool hasSlash = m_descriptor->format == MultibyteWithSlash;