RGBCube/serenity
1
Fork 0
mirror of https://github.com/RGBCube/serenity synced 2025-07-28 04:17:34 +00:00
Code Issues Activity Actions

LibX86: Support decoding F2 SSE instructions

Browse source 
Previously the F2 table was generated, but not used by the instruction
decoder.
This commit is contained in:
Simon Wanner 2023-11-10 09:07:40 +01:00 • committed by Andreas Kling
parent a0d8990c82
commit 5557f05bb5
1 changed files with 4 additions and 1 deletions
Download patch file Download diff file Expand all files Collapse all files

5
Userland/Libraries/LibX86/Instruction.h
View file

@ -296,6 +296,7 @@ extern InstructionDescriptor s_table[3][256];
extern InstructionDescriptor s_0f_table[3][256];
extern InstructionDescriptor s_sse_table_np[256];
extern InstructionDescriptor s_sse_table_66[256];
extern InstructionDescriptor s_sse_table_f2[256];
extern InstructionDescriptor s_sse_table_f3[256];
struct Prefix {
@ -1066,7 +1067,9 @@ ALWAYS_INLINE Instruction::Instruction(InstructionStreamType& stream, ProcessorM
}
if (m_descriptor->format == __SSE) {
if (m_rep_prefix == 0xF3) {
if (m_rep_prefix == 0xF2) {
m_descriptor = &s_sse_table_f2[m_sub_op];
} else if (m_rep_prefix == 0xF3) {
m_descriptor = &s_sse_table_f3[m_sub_op];
} else if (m_has_operand_size_override_prefix) {
// This was unset while parsing the prefix initially