diff options
Diffstat (limited to 'src/arch/x86/isa')
4 files changed, 33 insertions, 41 deletions
diff --git a/src/arch/x86/isa/decoder/one_byte_opcodes.isa b/src/arch/x86/isa/decoder/one_byte_opcodes.isa index 0816eb175..f76912f06 100644 --- a/src/arch/x86/isa/decoder/one_byte_opcodes.isa +++ b/src/arch/x86/isa/decoder/one_byte_opcodes.isa @@ -332,8 +332,8 @@ 0x3: mov_Ov_rAX(); 0x4: StringInst::MOVS(Yb,Xb); 0x5: StringInst::MOVS(Yv,Xv); - 0x6: StringInst::CMPS(Yb,Xb); - 0x7: StringInst::CMPS(Yv,Xv); + 0x6: StringTestInst::CMPS(Yb,Xb); + 0x7: StringTestInst::CMPS(Yv,Xv); } 0x15: decode OPCODE_OP_BOTTOM3 { 0x0: Inst::TEST(rAb,Ib); @@ -342,8 +342,8 @@ 0x3: StringInst::STOS(Yv); 0x4: lods_Al_Xb(); 0x5: lods_rAX_Xv(); - 0x6: StringInst::SCAS(Yb); - 0x7: StringInst::SCAS(Yv); + 0x6: StringTestInst::SCAS(Yb); + 0x7: StringTestInst::SCAS(Yv); } format Inst { 0x16: MOV(Bb,Ib); diff --git a/src/arch/x86/isa/formats/string.isa b/src/arch/x86/isa/formats/string.isa index cd182ff62..b1d3c4bbe 100644 --- a/src/arch/x86/isa/formats/string.isa +++ b/src/arch/x86/isa/formats/string.isa @@ -61,7 +61,7 @@ // ////////////////////////////////////////////////////////////////////////// -def format StringInst(*opTypeSet) {{ +def format StringTestInst(*opTypeSet) {{ allBlocks = OutputBlocks() regBlocks = specializeInst(Name, list(opTypeSet), EmulEnv()) @@ -86,3 +86,29 @@ def format StringInst(*opTypeSet) {{ (header_output, decoder_output, decode_block, exec_output) = allBlocks.makeList() }}; + +def format StringInst(*opTypeSet) {{ + allBlocks = OutputBlocks() + + regBlocks = specializeInst(Name, list(opTypeSet), EmulEnv()) + eBlocks = specializeInst(Name + "_E", list(opTypeSet), EmulEnv()) + + for blocks in (regBlocks, eBlocks): + allBlocks.header_output += blocks.header_output + allBlocks.decoder_output += blocks.decoder_output + allBlocks.exec_output += blocks.exec_output + + allBlocks.decode_block = ''' + if (LEGACY_REP) { + %s + } else if (LEGACY_REPNE) { + // The repne prefix is illegal + return new MicroFault(machInst, "illprefix", new InvalidOpcode); + } else { + %s + } + ''' % (eBlocks.decode_block, regBlocks.decode_block) + + (header_output, decoder_output, + decode_block, exec_output) = allBlocks.makeList() +}}; diff --git a/src/arch/x86/isa/insts/general_purpose/string/move_string.py b/src/arch/x86/isa/insts/general_purpose/string/move_string.py index 6a78a2cd4..b64acfdc2 100644 --- a/src/arch/x86/isa/insts/general_purpose/string/move_string.py +++ b/src/arch/x86/isa/insts/general_purpose/string/move_string.py @@ -82,25 +82,7 @@ topOfLoop: subi rcx, rcx, 1, flags=(EZF,), dataSize=asz add rdi, rdi, t3, dataSize=asz add rsi, rsi, t3, dataSize=asz - bri t0, label("topOfLoop"), flags=(CSTRZnEZF,) - fault "NoFault" -}; - -def macroop MOVS_N_M_M { - # Find the constant we need to either add or subtract from rdi - ruflag t0, 10 - movi t3, t3, dsz, flags=(CEZF,), dataSize=asz - subi t4, t0, dsz, dataSize=asz - mov t3, t3, t4, flags=(nCEZF,), dataSize=asz - -topOfLoop: - ld t1, seg, [1, t0, rsi] - st t1, es, [1, t0, rdi] - - subi rcx, rcx, 1, flags=(EZF,), dataSize=asz - add rdi, rdi, t3, dataSize=asz - add rsi, rsi, t3, dataSize=asz - bri t0, label("topOfLoop"), flags=(CSTRnZnEZF,) + bri t0, label("topOfLoop"), flags=(nCEZF,) fault "NoFault" }; ''' diff --git a/src/arch/x86/isa/insts/general_purpose/string/store_string.py b/src/arch/x86/isa/insts/general_purpose/string/store_string.py index a8655cf96..a8d558929 100644 --- a/src/arch/x86/isa/insts/general_purpose/string/store_string.py +++ b/src/arch/x86/isa/insts/general_purpose/string/store_string.py @@ -78,23 +78,7 @@ topOfLoop: subi rcx, rcx, 1, flags=(EZF,), dataSize=asz add rdi, rdi, t3, dataSize=asz - bri t0, label("topOfLoop"), flags=(CSTRZnEZF,) - fault "NoFault" -}; - -def macroop STOS_N_M { - # Find the constant we need to either add or subtract from rdi - ruflag t0, 10 - movi t3, t3, dsz, flags=(CEZF,), dataSize=asz - subi t4, t0, dsz, dataSize=asz - mov t3, t3, t4, flags=(nCEZF,), dataSize=asz - -topOfLoop: - st rax, es, [1, t0, rdi] - - subi rcx, rcx, 1, flags=(EZF,), dataSize=asz - add rdi, rdi, t3, dataSize=asz - bri t0, label("topOfLoop"), flags=(CSTRnZnEZF,) + bri t0, label("topOfLoop"), flags=(nCEZF,) fault "NoFault" }; ''' |