From: Gabe Black Date: Thu, 2 Jul 2009 05:17:06 +0000 (-0700) Subject: ARM: Make DataOps select from a set of ways to set the c and v flags. X-Git-Tag: Calvin_Submission~241 X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=26c70ce2cbb29e497a0a631e4a067051e03b22e9;p=gem5.git ARM: Make DataOps select from a set of ways to set the c and v flags. --- diff --git a/src/arch/arm/isa/decoder.isa b/src/arch/arm/isa/decoder.isa index 8c9f7aa50..3913507d1 100644 --- a/src/arch/arm/isa/decoder.isa +++ b/src/arch/arm/isa/decoder.isa @@ -83,31 +83,27 @@ format DataOp { 1: decode MISC_OPCODE { 0x9: decode PREPOST { 0: decode OPCODE { - 0x0: mul({{ Rn = resTemp = Rm * Rs; }}, - {{ Cpsr<29:> }}, - {{ Cpsr<28:> }}); - 0x1: mla({{ Rn = resTemp = Rm * Rs; }}, - {{ Cpsr<29:> }}, - {{ Cpsr<28:> }}); + 0x0: mul({{ Rn = resTemp = Rm * Rs; }}, none); + 0x1: mla({{ Rn = resTemp = Rm * Rs; }}, none); 0x2: WarnUnimpl::umall(); 0x4: umull({{ resTemp = ((uint64_t)Rm)*((uint64_t)Rs); Rd = (uint32_t)(resTemp & 0xffffffff); Rn = (uint32_t)(resTemp >> 32); - }}, {{ 1 }}, {{ 1 }}); + }}); 0x5: WarnUnimpl::smlal(); 0x6: smull({{ resTemp = ((int64_t)(int32_t)Rm)* ((int64_t)(int32_t)Rs); Rd = (int32_t)(resTemp & 0xffffffff); Rn = (int32_t)(resTemp >> 32); - }}, {{ 1 }}, {{ 1 }}); + }}); 0x7: umlal({{ resTemp = ((uint64_t)Rm)*((uint64_t)Rs); resTemp += ((uint64_t)Rn << 32)+((uint64_t)Rd); Rd = (uint32_t)(resTemp & 0xffffffff); Rn = (uint32_t)(resTemp >> 32); - }}, {{ 1 }}, {{ 1 }}); + }}); } 1: decode PUBWL { 0x10: WarnUnimpl::swp(); @@ -229,32 +225,16 @@ format DataOp { 0: decode OPCODE { 0x0: and({{ Rd = resTemp = Rn & op2; }}); 0x1: eor({{ Rd = resTemp = Rn ^ op2; }}); - 0x2: sub({{ Rd = resTemp = Rn - op2; }}, - {{ arm_sub_carry(resTemp, Rn, op2) }}, - {{ arm_sub_overflow(resTemp, Rn, op2) }}); - 0x3: rsb({{ Rd = resTemp = op2 - Rn; }}, - {{ arm_sub_carry(resTemp, op2, Rn) }}, - {{ arm_sub_overflow(resTemp, op2, Rn) }}); - 0x4: add({{ Rd = resTemp = Rn + op2; }}, - {{ arm_add_carry(resTemp, Rn, op2) }}, - {{ arm_add_overflow(resTemp, Rn, op2) }}); - 0x5: adc({{ Rd = resTemp = Rn + op2 + Cpsr<29:>; }}, - {{ arm_add_carry(resTemp, Rn, op2) }}, - {{ arm_add_overflow(resTemp, Rn, op2) }}); - 0x6: sbc({{ Rd = resTemp = Rn - op2 - !Cpsr<29:>; }}, - {{ arm_sub_carry(resTemp, Rn, op2) }}, - {{ arm_sub_overflow(resTemp, Rn, op2) }}); - 0x7: rsc({{ Rd = resTemp = op2 - Rn - !Cpsr<29:>; }}, - {{ arm_sub_carry(resTemp, op2, Rn) }}, - {{ arm_sub_overflow(resTemp, op2, Rn) }}); + 0x2: sub({{ Rd = resTemp = Rn - op2; }}, sub); + 0x3: rsb({{ Rd = resTemp = op2 - Rn; }}, rsb); + 0x4: add({{ Rd = resTemp = Rn + op2; }}, add); + 0x5: adc({{ Rd = resTemp = Rn + op2 + Cpsr<29:>; }}, add); + 0x6: sbc({{ Rd = resTemp = Rn - op2 - !Cpsr<29:>; }}, sub); + 0x7: rsc({{ Rd = resTemp = op2 - Rn - !Cpsr<29:>; }}, rsb); 0x8: tst({{ resTemp = Rn & op2; }}); 0x9: teq({{ resTemp = Rn ^ op2; }}); - 0xa: cmp({{ resTemp = Rn - op2; }}, - {{ arm_sub_carry(resTemp, Rn, op2) }}, - {{ arm_sub_overflow(resTemp, Rn, op2) }}); - 0xb: cmn({{ resTemp = Rn + op2; }}, - {{ arm_add_carry(resTemp, Rn, op2) }}, - {{ arm_add_overflow(resTemp, Rn, op2) }}); + 0xa: cmp({{ resTemp = Rn - op2; }}, sub); + 0xb: cmn({{ resTemp = Rn + op2; }}, add); 0xc: orr({{ Rd = resTemp = Rn | op2; }}); 0xd: mov({{ Rd = resTemp = op2; }}); 0xe: bic({{ Rd = resTemp = Rn & ~op2; }}); @@ -318,32 +298,16 @@ format DataOp { format DataImmOp { 0x0: andi({{ Rd = resTemp = Rn & rotated_imm; }}); 0x1: eori({{ Rd = resTemp = Rn ^ rotated_imm; }}); - 0x2: subi({{ Rd = resTemp = Rn - rotated_imm; }}, - {{ arm_sub_carry(resTemp, Rn, rotated_imm) }}, - {{ arm_sub_overflow(resTemp, Rn, rotated_imm) }}); - 0x3: rsbi({{ Rd = resTemp = rotated_imm - Rn; }}, - {{ arm_sub_carry(resTemp, rotated_imm, Rn) }}, - {{ arm_sub_overflow(resTemp, rotated_imm, Rn) }}); - 0x4: addi({{ Rd = resTemp = Rn + rotated_imm; }}, - {{ arm_add_carry(resTemp, Rn, rotated_imm) }}, - {{ arm_add_overflow(resTemp, Rn, rotated_imm) }}); - 0x5: adci({{ Rd = resTemp = Rn + rotated_imm + Cpsr<29:>; }}, - {{ arm_add_carry(resTemp, Rn, rotated_imm) }}, - {{ arm_add_overflow(resTemp, Rn, rotated_imm) }}); - 0x6: sbci({{ Rd = resTemp = Rn -rotated_imm - !Cpsr<29:>; }}, - {{ arm_sub_carry(resTemp, Rn, rotated_imm) }}, - {{ arm_sub_overflow(resTemp, Rn, rotated_imm) }}); - 0x7: rsci({{ Rd = resTemp = rotated_imm - Rn - !Cpsr<29:>;}}, - {{ arm_sub_carry(resTemp, rotated_imm, Rn) }}, - {{ arm_sub_overflow(resTemp, rotated_imm, Rn) }}); + 0x2: subi({{ Rd = resTemp = Rn - rotated_imm; }}, sub); + 0x3: rsbi({{ Rd = resTemp = rotated_imm - Rn; }}, rsb); + 0x4: addi({{ Rd = resTemp = Rn + rotated_imm; }}, add); + 0x5: adci({{ Rd = resTemp = Rn + rotated_imm + Cpsr<29:>; }}, add); + 0x6: sbci({{ Rd = resTemp = Rn -rotated_imm - !Cpsr<29:>; }}, sub); + 0x7: rsci({{ Rd = resTemp = rotated_imm - Rn - !Cpsr<29:>;}}, rsb); 0x8: tsti({{ resTemp = Rn & rotated_imm; }}); 0x9: teqi({{ resTemp = Rn ^ rotated_imm; }}); - 0xa: cmpi({{ resTemp = Rn - rotated_imm; }}, - {{ arm_sub_carry(resTemp, Rn, rotated_imm) }}, - {{ arm_sub_overflow(resTemp, Rn, rotated_imm) }}); - 0xb: cmni({{ resTemp = Rn + rotated_imm; }}, - {{ arm_add_carry(resTemp, Rn, rotated_imm) }}, - {{ arm_add_overflow(resTemp, Rn, rotated_imm) }}); + 0xa: cmpi({{ resTemp = Rn - rotated_imm; }}, sub); + 0xb: cmni({{ resTemp = Rn + rotated_imm; }}, add); 0xc: orri({{ Rd = resTemp = Rn | rotated_imm; }}); 0xd: movi({{ Rd = resTemp = rotated_imm; }}); 0xe: bici({{ Rd = resTemp = Rn & ~rotated_imm; }}); diff --git a/src/arch/arm/isa/formats/pred.isa b/src/arch/arm/isa/formats/pred.isa index 0aada7bba..50e162f3d 100644 --- a/src/arch/arm/isa/formats/pred.isa +++ b/src/arch/arm/isa/formats/pred.isa @@ -101,24 +101,54 @@ let {{ }}; -def format DataOp(code, icValue = {{ }}, - ivValue = {{ Cpsr<28:> }}) {{ +let {{ + def getCcCode(flagtype): + icReg = icImm = iv = '' + if flagtype == "none": + icReg = icImm = iv = '1' + elif flagtype == "add": + icReg = icImm = 'findCarry(32, resTemp, Rn, op2)' + iv = 'findOverflow(32, resTemp, Rn, op2)' + elif flagtype == "sub": + icReg = icImm ='findCarry(32, resTemp, Rn, ~op2)' + iv = 'findOverflow(32, resTemp, Rn, ~op2)' + elif flagtype == "rsb": + icReg = icImm = 'findCarry(32, resTemp, op2, ~Rn)' + iv = 'findOverflow(32, resTemp, op2, ~Rn)' + else: + icReg = 'shift_carry_rs(Rm, Rs, shift, Cpsr<29:>)' + icImm = 'shift_carry_imm(Rm, shift_size, shift, Cpsr<29:>)' + iv = 'Cpsr<28:>' + return (calcCcCode % {"icValue" : icReg, "ivValue" : iv}, + calcCcCode % {"icValue" : icImm, "ivValue" : iv}) + + def getImmCcCode(flagtype): + ivValue = icValue = '' + if flagtype == "none": + icValue = ivValue = '1' + elif flagtype == "add": + icValue = 'findCarry(32, resTemp, Rn, rotated_imm)' + ivValue = 'findOverflow(32, resTemp, Rn, rotated_imm)' + elif flagtype == "sub": + icValue = 'findCarry(32, resTemp, Rn, ~rotated_imm)' + ivValue = 'findOverflow(32, resTemp, Rn, ~rotated_imm)' + elif flagtype == "rsb": + icValue = 'findCarry(32, resTemp, rotated_imm, ~Rn)' + ivValue = 'findOverflow(32, resTemp, rotated_imm, ~Rn)' + else: + icValue = '(rotate ? rotated_carry:Cpsr<29:>)' + ivValue = 'Cpsr<28:>' + return calcCcCode % vars() +}}; + +def format DataOp(code, flagtype = logic) {{ + (regCcCode, immCcCode) = getCcCode(flagtype) regCode = '''uint32_t op2 = shift_rm_rs(Rm, Rs, shift, Cpsr<29:0>); op2 = op2;''' + code immCode = '''uint32_t op2 = shift_rm_imm(Rm, shift_size, shift, Cpsr<29:0>); op2 = op2;''' + code - if icValue == " ": - icValueReg = 'shift_carry_rs(Rm, Rs, shift, Cpsr<29:>)' - icValueImm = 'shift_carry_imm(Rm, shift_size, shift, Cpsr<29:>)' - else: - icValueReg = icValue - icValueImm = icValue - regCcCode = calcCcCode % {"icValue" : icValueReg, - "ivValue" : ivValue} - immCcCode = calcCcCode % {"icValue" : icValueImm, - "ivValue" : ivValue} regIop = InstObjParams(name, Name, 'PredIntOp', {"code": regCode, "predicate_test": predicateTest}) @@ -146,15 +176,13 @@ def format DataOp(code, icValue = {{ }}, decode_block = DataDecode.subst(regIop) }}; -def format DataImmOp(code, - icValue = {{ (rotate ? rotated_carry:Cpsr<29:>) }}, - ivValue = {{ Cpsr<28:> }}) {{ +def format DataImmOp(code, flagtype = logic) {{ code += "resTemp = resTemp;" iop = InstObjParams(name, Name, 'PredImmOp', {"code": code, "predicate_test": predicateTest}) ccIop = InstObjParams(name, Name + "Cc", 'PredImmOp', - {"code": code + calcCcCode % vars(), + {"code": code + getImmCcCode(flagtype), "predicate_test": predicateTest}) header_output = BasicDeclare.subst(iop) + \ BasicDeclare.subst(ccIop) diff --git a/src/arch/arm/isa/includes.isa b/src/arch/arm/isa/includes.isa index 7d5eb4850..28b9e704a 100644 --- a/src/arch/arm/isa/includes.isa +++ b/src/arch/arm/isa/includes.isa @@ -69,6 +69,7 @@ output exec {{ #include "arch/arm/faults.hh" #include "arch/arm/isa_traits.hh" #include "arch/arm/utility.hh" +#include "base/condcodes.hh" #include #if defined(linux)