From 1d4f338b391ffea73d05758ecca771bd16625031 Mon Sep 17 00:00:00 2001 From: Gabe Black Date: Wed, 8 Jul 2009 23:02:19 -0700 Subject: [PATCH] ARM: Move the memory microops out of the decoder and into the ISA desc. --- src/arch/arm/insts/macromem.hh | 16 ++++++ src/arch/arm/isa/decoder.isa | 22 +------ src/arch/arm/isa/formats/macromem.isa | 82 ++++++++++++++++++++++----- src/arch/arm/isa/formats/util.isa | 64 ++++----------------- 4 files changed, 96 insertions(+), 88 deletions(-) diff --git a/src/arch/arm/insts/macromem.hh b/src/arch/arm/insts/macromem.hh index c215cdeab..541c9e3f5 100644 --- a/src/arch/arm/insts/macromem.hh +++ b/src/arch/arm/insts/macromem.hh @@ -63,6 +63,22 @@ class MicroIntOp : public PredOp } }; +/** + * Memory microops which use IntReg + Imm addressing + */ +class MicroMemOp : public MicroIntOp +{ + protected: + unsigned memAccessFlags; + + MicroMemOp(const char *mnem, ExtMachInst machInst, OpClass __opClass, + RegIndex _ura, RegIndex _urb, uint8_t _imm) + : MicroIntOp(mnem, machInst, __opClass, _ura, _urb, _imm), + memAccessFlags(0) + { + } +}; + /** * Arm Macro Memory operations like LDM/STM */ diff --git a/src/arch/arm/isa/decoder.isa b/src/arch/arm/isa/decoder.isa index fbeb2da22..f52cbe1a1 100644 --- a/src/arch/arm/isa/decoder.isa +++ b/src/arch/arm/isa/decoder.isa @@ -39,33 +39,13 @@ // decode COND_CODE default Unknown::unknown() { 0xf: decode COND_CODE { - 0x0: decode OPCODE { - // Just a simple trick to allow us to specify our new uops here - 0x2: ArmLoadMemory::ldr_uop({{ Rd = Mem; }}, - {{ EA = Raddr + (up ? disp : -disp); }}, - inst_flags = [IsMicroop]); - 0x3: ArmStoreMemory::str_uop({{ Mem = Rd; }}, - {{ EA = Raddr + (up ? disp : -disp); }}, - inst_flags = [IsMicroop]); - } 0x1: decode OPCODE { + // Just a simple trick to allow us to specify our new uops here 0x0: PredIntOp::mvtd_uop({{ Fd.ud = ((uint64_t) Rhi << 32)|Rlo; }}, 'IsMicroop'); 0x1: PredIntOp::mvfd_uop({{ Rhi = (Fd.ud >> 32) & 0xffffffff; Rlo = Fd.ud & 0xffffffff; }}, 'IsMicroop'); - 0x2: ArmLoadMemory::ldhi_uop({{ Rhi = Mem; }}, - {{ EA = Rn + (up ? disp : -disp); }}, - inst_flags = [IsMicroop]); - 0x3: ArmLoadMemory::ldlo_uop({{ Rlo = Mem; }}, - {{ EA = Rn + (up ? disp : -disp); }}, - inst_flags = [IsMicroop]); - 0x4: ArmStoreMemory::sthi_uop({{ Mem = Rhi; }}, - {{ EA = Rn + (up ? disp : -disp); }}, - inst_flags = [IsMicroop]); - 0x5: ArmStoreMemory::stlo_uop({{ Mem = Rlo; }}, - {{ EA = Rn + (up ? disp : -disp); }}, - inst_flags = [IsMicroop]); } default: Unknown::unknown(); // TODO: Ignore other NV space for now } diff --git a/src/arch/arm/isa/formats/macromem.isa b/src/arch/arm/isa/formats/macromem.isa index 9b3a4f75f..be9504051 100644 --- a/src/arch/arm/isa/formats/macromem.isa +++ b/src/arch/arm/isa/formats/macromem.isa @@ -29,6 +29,67 @@ // Authors: Stephen Hines // Gabe Black +//////////////////////////////////////////////////////////////////// +// +// Common microop templates +// + +def template MicroConstructor {{ + inline %(class_name)s::%(class_name)s(ExtMachInst machInst, + RegIndex _ura, + RegIndex _urb, + uint8_t _imm) + : %(base_class)s("%(mnemonic)s", machInst, %(op_class)s, + _ura, _urb, _imm) + { + %(constructor)s; + } +}}; + +//////////////////////////////////////////////////////////////////// +// +// Load/store microops +// + +def template MicroMemDeclare {{ + class %(class_name)s : public %(base_class)s + { + public: + %(class_name)s(ExtMachInst machInst, + RegIndex _ura, RegIndex _urb, + uint8_t _imm); + %(BasicExecDeclare)s + %(InitiateAccDeclare)s + %(CompleteAccDeclare)s + }; +}}; + +let {{ + microLdrUopIop = InstObjParams('ldr_uop', 'MicroLdrUop', + 'MicroMemOp', + {'memacc_code': 'Ra = Mem;', + 'ea_code': 'EA = Rb + (UP ? imm : -imm);', + 'predicate_test': predicateTest}, + ['IsMicroop']) + + microStrUopIop = InstObjParams('str_uop', 'MicroStrUop', + 'MicroMemOp', + {'memacc_code': 'Mem = Ra;', + 'ea_code': 'EA = Rb + (UP ? imm : -imm);', + 'predicate_test': predicateTest}, + ['IsMicroop']) + + header_output = MicroMemDeclare.subst(microLdrUopIop) + \ + MicroMemDeclare.subst(microStrUopIop) + decoder_output = MicroConstructor.subst(microLdrUopIop) + \ + MicroConstructor.subst(microStrUopIop) + exec_output = LoadExecute.subst(microLdrUopIop) + \ + StoreExecute.subst(microStrUopIop) + \ + LoadInitiateAcc.subst(microLdrUopIop) + \ + StoreInitiateAcc.subst(microStrUopIop) + \ + LoadCompleteAcc.subst(microLdrUopIop) + \ + StoreCompleteAcc.subst(microStrUopIop) +}}; //////////////////////////////////////////////////////////////////// // @@ -46,18 +107,6 @@ def template MicroIntDeclare {{ }; }}; -def template MicroIntConstructor {{ - inline %(class_name)s::%(class_name)s(ExtMachInst machInst, - RegIndex _ura, - RegIndex _urb, - uint8_t _imm) - : %(base_class)s("%(mnemonic)s", machInst, %(op_class)s, - _ura, _urb, _imm) - { - %(constructor)s; - } -}}; - let {{ microAddiUopIop = InstObjParams('addi_uop', 'MicroAddiUop', 'MicroIntOp', @@ -73,8 +122,8 @@ let {{ header_output = MicroIntDeclare.subst(microAddiUopIop) + \ MicroIntDeclare.subst(microSubiUopIop) - decoder_output = MicroIntConstructor.subst(microAddiUopIop) + \ - MicroIntConstructor.subst(microSubiUopIop) + decoder_output = MicroConstructor.subst(microAddiUopIop) + \ + MicroConstructor.subst(microSubiUopIop) exec_output = PredOpExecute.subst(microAddiUopIop) + \ PredOpExecute.subst(microSubiUopIop) }}; @@ -148,7 +197,10 @@ inline %(class_name)s::%(class_name)s(ExtMachInst machInst) j++; regs_to_handle &= ~(1<