//***************************************************************************** // cmp dword ptr p_mem, data //***************************************************************************** void CAssemblyWriterX86::CMP_MEM32_I32(const void *p_mem, u32 data) { EmitBYTE(0x81); EmitBYTE(0x3d); EmitDWORD(reinterpret_cast< u32 >( p_mem )); EmitDWORD(data); }
//***************************************************************************** // //***************************************************************************** void CAssemblyWriterX86::MOVI_MEM(void * mem, u32 data) { EmitBYTE(0xc7); EmitBYTE(0x05); EmitDWORD((u32)mem); EmitDWORD(data); }
//***************************************************************************** // //***************************************************************************** void CAssemblyWriterX86::ADD_REG_MEM_IDXx4( EIntelReg destreg, void * mem, EIntelReg idxreg ) { EmitBYTE(0x03); EmitBYTE(0x04 | (destreg << 3)); EmitBYTE(0x85 | (idxreg<<3)); EmitDWORD((u32)mem); }
//***************************************************************************** // call dword ptr [mem + reg*4] //***************************************************************************** void CAssemblyWriterX86::CALL_MEM_PLUS_REGx4( void * mem, EIntelReg reg ) { EmitBYTE(0xFF); EmitBYTE(0x14); EmitBYTE(0x85 | (reg<<3)); EmitDWORD((u32)mem); }
//***************************************************************************** // //***************************************************************************** void CAssemblyWriterX86::XOR_I32(EIntelReg reg, u32 data) { /*if (reg == EAX_CODE) EmitBYTE(0x35); else */ { EmitBYTE(0x81); EmitBYTE(0xf0 | reg); } EmitDWORD(data); }
//***************************************************************************** // //***************************************************************************** void CAssemblyWriterX86::ORI(EIntelReg reg, u32 data) { /*if (reg == EAX_CODE) EmitBYTE(0x0D); else*/ { EmitBYTE(0x81); EmitBYTE(0xc8 | reg); } EmitDWORD(data); }
//***************************************************************************** // //***************************************************************************** void CAssemblyWriterX86::FLD_MEMp64( void * memlo, void * memhi ) { static s64 longtemp; MOV_REG_MEM(EAX_CODE, (u8*)(memlo) ); MOV_REG_MEM(EDX_CODE, (u8*)(memhi) ); MOV_MEM_REG(((u8*)&longtemp) + 0, EAX_CODE); MOV_MEM_REG(((u8*)&longtemp) + 4, EDX_CODE); EmitWORD(0x05dd); EmitDWORD( u32(&longtemp) ); }
//***************************************************************************** // //***************************************************************************** void CAssemblyWriterX86::FSTP_MEMp64( void * memlo, void * memhi ) { static s64 longtemp; EmitWORD(0x1ddd); EmitDWORD( u32(&longtemp) ); MOV_REG_MEM(EAX_CODE, ((u8*)(&longtemp))+0); MOV_REG_MEM(EDX_CODE, ((u8*)(&longtemp))+4); MOV_MEM_REG(((u8*)(memlo)), EAX_CODE); MOV_MEM_REG(((u8*)(memhi)), EDX_CODE); }
//***************************************************************************** // mov dword ptr[ mem ], reg //***************************************************************************** void CAssemblyWriterX86::MOV_MEM_REG(void * mem, EIntelReg isrc) { /*if (reg == EAX_CODE) EmitBYTE(0xa3); else*/ { EmitBYTE(0x89); EmitBYTE((isrc<<3) | 0x05); } EmitDWORD((u32)mem); }
//***************************************************************************** // //***************************************************************************** CJumpLocation CAssemblyWriterX86::JMPLong( CCodeLabel target ) { const u32 JUMP_DIRECT_LONG_LENGTH = 5; CJumpLocation jump_location( mpAssemblyBuffer->GetJumpLocation() ); s32 offset( jump_location.GetOffset( target ) - JUMP_DIRECT_LONG_LENGTH ); EmitBYTE(0xe9); EmitDWORD( static_cast< u32 >( offset ) ); return jump_location; }
//***************************************************************************** // //***************************************************************************** CJumpLocation CAssemblyWriterX86::CALL( CCodeLabel target ) { const u32 CALL_LONG_LENGTH = 5; CJumpLocation jump_location( mpAssemblyBuffer->GetJumpLocation() ); s32 offset( jump_location.GetOffset( target ) - CALL_LONG_LENGTH ); EmitBYTE( 0xe8 ); EmitDWORD( offset ); return jump_location; }
//***************************************************************************** // mov reg, dword ptr[ mem ] //***************************************************************************** void CAssemblyWriterX86::MOV_REG_MEM(EIntelReg reg, const void * mem) { /*if (reg == EAX_CODE) EmitBYTE(0xa1); else*/ { EmitBYTE(0x8b); EmitBYTE((reg<<3) | 0x05); } EmitDWORD((u32)mem); }
//***************************************************************************** // //***************************************************************************** CJumpLocation CAssemblyWriterX86::JumpConditionalLong( CCodeLabel target, u8 jump_type ) { const u32 JUMP_LONG_LENGTH = 6; CJumpLocation jump_location( mpAssemblyBuffer->GetJumpLocation() ); s32 offset( jump_location.GetOffset( target ) - JUMP_LONG_LENGTH ); EmitBYTE( 0x0f ); EmitBYTE( jump_type ); // EmitDWORD( offset ); return jump_location; }
//***************************************************************************** // //***************************************************************************** void CAssemblyWriterX86::ADDI(EIntelReg reg, s32 data) { if (data == 0) return; /*if (reg == EAX_CODE) EmitBYTE(0x05); else */ { EmitBYTE(0x81); EmitBYTE(0xc0 | reg); } EmitDWORD(data); }
//***************************************************************************** // Use short form (0x83c0) if data is just one byte! //***************************************************************************** void CAssemblyWriterX86::ADDI(EIntelReg reg, s32 data) { if (data == 0) return; if (data <= 127 && data > -127) { EmitBYTE(0x83); EmitBYTE(0xc0 | reg); EmitBYTE((u8)data); } else { EmitBYTE(0x81); EmitBYTE(0xc0 | reg); EmitDWORD(data); } }
//***************************************************************************** // Use short form (0x83d0) if data is just one byte! //***************************************************************************** void CAssemblyWriterX86::ADCI(EIntelReg reg, s32 data) { /*if (reg == EAX_CODE) { EmitBYTE(0x15); EmitDWORD(data) } else*/ if (data <= 127 && data > -127) { EmitBYTE(0x83); EmitBYTE(0xd0 | reg); EmitBYTE((u8)(data)); } else { EmitBYTE(0x81); EmitBYTE(0xd0 | reg); EmitDWORD(data); } }
//***************************************************************************** // //***************************************************************************** void CAssemblyWriterX86::FISTP_MEMp( void * pmem ) { EmitWORD( 0x1ddb ); EmitDWORD((u32)pmem); }
//***************************************************************************** // and eax, 0x00FF - Mask off top bits! // This is slightly more efficient than ANDI( EAX_CODE, data ) //***************************************************************************** void CAssemblyWriterX86::AND_EAX( u32 mask ) { EmitBYTE(0x25); EmitDWORD(mask); }
//***************************************************************************** // //***************************************************************************** void CAssemblyWriterX86::FSTP_MEMp32( void * pmem ) { EmitWORD( 0x1dd9); EmitDWORD( u32(pmem) ); }
//***************************************************************************** // //***************************************************************************** void CAssemblyWriterX86::FILD_MEM( void * pmem ) { EmitWORD(0x05db); EmitDWORD( u32(pmem) ); }
//***************************************************************************** // //***************************************************************************** void CAssemblyWriterX86::FLD_MEMp32( void * pmem ) { EmitWORD(0x05d9); EmitDWORD( u32(pmem) ); }
//***************************************************************************** // //***************************************************************************** void CAssemblyWriterX86::MOVI(EIntelReg reg, u32 data) { EmitBYTE(0xB8 | reg); EmitDWORD(data); }
//***************************************************************************** // //***************************************************************************** void CAssemblyWriterX86::CMPI(EIntelReg reg, u32 data) { EmitBYTE(0x81); EmitBYTE(0xf8 | reg); EmitDWORD(data); }
//***************************************************************************** // mov dst, dword ptr [base + nnnnnnnn] //***************************************************************************** void CAssemblyWriterX86::MOV_REG_MEM_BASE_OFFSET32( EIntelReg idst, EIntelReg ibase, s32 offset ) { EmitBYTE(0x8B); EmitBYTE(0x80 | (idst<<3) | ibase); EmitDWORD((u32)offset); }
//***************************************************************************** // //***************************************************************************** void CAssemblyWriterX86::MUL_EAX_MEM(void * mem) { EmitBYTE(0xf7); EmitBYTE(0x25); EmitDWORD((u32)mem); }
//***************************************************************************** // mov dword ptr [base + nnnnnnnn], src //***************************************************************************** void CAssemblyWriterX86::MOV_MEM_BASE_OFFSET32_REG( EIntelReg ibase, s32 offset, EIntelReg isrc ) { EmitBYTE(0x89); EmitBYTE(0x80 | (isrc<<3) | ibase); EmitDWORD((u32)offset); }
//***************************************************************************** // //***************************************************************************** void CAssemblyWriterX86::JS(s32 off) { EmitBYTE(0x0f); EmitBYTE(0x88); EmitDWORD( u32(off) ); }
//***************************************************************************** // //***************************************************************************** void CAssemblyWriterX86::PUSHI( u32 value ) { EmitBYTE( 0x68 ); EmitDWORD( value ); }