diff options
Diffstat (limited to 'src/arch/riscv')
| -rw-r--r-- | src/arch/riscv/insts/SConscript | 1 | ||||
| -rw-r--r-- | src/arch/riscv/insts/bitfields.hh | 3 | ||||
| -rw-r--r-- | src/arch/riscv/insts/mem.cc | 65 | ||||
| -rw-r--r-- | src/arch/riscv/insts/mem.hh | 75 | ||||
| -rw-r--r-- | src/arch/riscv/isa/decoder.isa | 86 | ||||
| -rw-r--r-- | src/arch/riscv/isa/formats/mem.isa | 78 | ||||
| -rw-r--r-- | src/arch/riscv/isa/includes.isa | 1 |
7 files changed, 194 insertions, 115 deletions
diff --git a/src/arch/riscv/insts/SConscript b/src/arch/riscv/insts/SConscript index fe9028029..8bedc7b73 100644 --- a/src/arch/riscv/insts/SConscript +++ b/src/arch/riscv/insts/SConscript @@ -1,5 +1,6 @@ Import('*') if env['TARGET_ISA'] == 'riscv': + Source('mem.cc') Source('standard.cc') Source('static_inst.cc')
\ No newline at end of file diff --git a/src/arch/riscv/insts/bitfields.hh b/src/arch/riscv/insts/bitfields.hh index d6648227e..eac070e7f 100644 --- a/src/arch/riscv/insts/bitfields.hh +++ b/src/arch/riscv/insts/bitfields.hh @@ -5,6 +5,9 @@ #define CSRIMM bits(machInst, 19, 15) #define FUNCT12 bits(machInst, 31, 20) +#define IMM5 bits(machInst, 11, 7) +#define IMM7 bits(machInst, 31, 25) +#define IMMSIGN bits(machInst, 31) #define OPCODE bits(machInst, 6, 0) #endif // __ARCH_RISCV_BITFIELDS_HH__
\ No newline at end of file diff --git a/src/arch/riscv/insts/mem.cc b/src/arch/riscv/insts/mem.cc new file mode 100644 index 000000000..862700b0c --- /dev/null +++ b/src/arch/riscv/insts/mem.cc @@ -0,0 +1,65 @@ +/* + * Copyright (c) 2015 RISC-V Foundation + * Copyright (c) 2017 The University of Virginia + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are + * met: redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer; + * redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution; + * neither the name of the copyright holders nor the names of its + * contributors may be used to endorse or promote products derived from + * this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + * Authors: Alec Roelke + */ + +#include "arch/riscv/insts/mem.hh" + +#include <sstream> +#include <string> + +#include "arch/riscv/insts/bitfields.hh" +#include "arch/riscv/insts/static_inst.hh" +#include "arch/riscv/utility.hh" +#include "cpu/static_inst.hh" + +using namespace std; + +namespace RiscvISA +{ + +string +Load::generateDisassembly(Addr pc, const SymbolTable *symtab) const +{ + stringstream ss; + ss << mnemonic << ' ' << registerName(_destRegIdx[0]) << ", " << + offset << '(' << registerName(_srcRegIdx[0]) << ')'; + return ss.str(); +} + +string +Store::generateDisassembly(Addr pc, const SymbolTable *symtab) const +{ + stringstream ss; + ss << mnemonic << ' ' << registerName(_srcRegIdx[1]) << ", " << + offset << '(' << registerName(_srcRegIdx[0]) << ')'; + return ss.str(); +} + +} diff --git a/src/arch/riscv/insts/mem.hh b/src/arch/riscv/insts/mem.hh new file mode 100644 index 000000000..514d4d6e1 --- /dev/null +++ b/src/arch/riscv/insts/mem.hh @@ -0,0 +1,75 @@ +/* + * Copyright (c) 2015 RISC-V Foundation + * Copyright (c) 2017 The University of Virginia + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are + * met: redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer; + * redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution; + * neither the name of the copyright holders nor the names of its + * contributors may be used to endorse or promote products derived from + * this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + * Authors: Alec Roelke + */ + +#ifndef __ARCH_RISCV_INST_MEM_HH__ +#define __ARCH_RISCV_INST_MEM_HH__ + +#include <string> + +#include "arch/riscv/insts/static_inst.hh" +#include "cpu/exec_context.hh" +#include "cpu/static_inst.hh" + +namespace RiscvISA +{ + +class MemInst : public RiscvStaticInst +{ + protected: + int64_t offset; + Request::Flags memAccessFlags; + + MemInst(const char *mnem, ExtMachInst _machInst, OpClass __opClass) + : RiscvStaticInst(mnem, _machInst, __opClass), offset(0) + {} +}; + +class Load : public MemInst +{ + protected: + using MemInst::MemInst; + + std::string generateDisassembly( + Addr pc, const SymbolTable *symtab) const override; +}; + +class Store : public MemInst +{ + protected: + using MemInst::MemInst; + + std::string generateDisassembly( + Addr pc, const SymbolTable *symtab) const override; +}; + +} + +#endif // __ARCH_RISCV_INST_MEM_HH__ diff --git a/src/arch/riscv/isa/decoder.isa b/src/arch/riscv/isa/decoder.isa index a6f881633..2761faca1 100644 --- a/src/arch/riscv/isa/decoder.isa +++ b/src/arch/riscv/isa/decoder.isa @@ -48,52 +48,52 @@ decode QUADRANT default Unknown::unknown() { }}); format CompressedLoad { 0x1: c_fld({{ - ldisp = CIMM3 << 3 | CIMM2 << 6; + offset = CIMM3 << 3 | CIMM2 << 6; }}, {{ Fp2_bits = Mem; }}, {{ - EA = Rp1 + ldisp; + EA = Rp1 + offset; }}); 0x2: c_lw({{ - ldisp = CIMM2<1:1> << 2 | - CIMM3 << 3 | - CIMM2<0:0> << 6; + offset = CIMM2<1:1> << 2 | + CIMM3 << 3 | + CIMM2<0:0> << 6; }}, {{ Rp2_sd = Mem_sw; }}, {{ - EA = Rp1 + ldisp; + EA = Rp1 + offset; }}); 0x3: c_ld({{ - ldisp = CIMM3 << 3 | CIMM2 << 6; + offset = CIMM3 << 3 | CIMM2 << 6; }}, {{ Rp2_sd = Mem_sd; }}, {{ - EA = Rp1 + ldisp; + EA = Rp1 + offset; }}); } format CompressedStore { 0x5: c_fsd({{ - sdisp = CIMM3 << 3 | CIMM2 << 6; + offset = CIMM3 << 3 | CIMM2 << 6; }}, {{ Mem = Fp2_bits; }}, {{ - EA = Rp1 + sdisp; + EA = Rp1 + offset; }}); 0x6: c_sw({{ - sdisp = CIMM2<1:1> << 2 | - CIMM3 << 3 | - CIMM2<0:0> << 6; + offset = CIMM2<1:1> << 2 | + CIMM3 << 3 | + CIMM2<0:0> << 6; }}, {{ Mem_uw = Rp2_uw; }}, ea_code={{ - EA = Rp1 + sdisp; + EA = Rp1 + offset; }}); 0x7: c_sd({{ - sdisp = CIMM3 << 3 | CIMM2 << 6; + offset = CIMM3 << 3 | CIMM2 << 6; }}, {{ Mem_ud = Rp2_ud; }}, {{ - EA = Rp1 + sdisp; + EA = Rp1 + offset; }}); } } @@ -202,12 +202,12 @@ decode QUADRANT default Unknown::unknown() { } 0x5: JOp::c_j({{ int64_t offset = CJUMPIMM<3:1> << 1 | - CJUMPIMM<9:9> << 4 | - CJUMPIMM<0:0> << 5 | - CJUMPIMM<5:5> << 6 | - CJUMPIMM<4:4> << 7 | - CJUMPIMM<8:7> << 8 | - CJUMPIMM<6:6> << 10; + CJUMPIMM<9:9> << 4 | + CJUMPIMM<0:0> << 5 | + CJUMPIMM<5:5> << 6 | + CJUMPIMM<4:4> << 7 | + CJUMPIMM<8:7> << 8 | + CJUMPIMM<6:6> << 10; if (CJUMPIMM<10:10> > 0) offset |= ~((int64_t)0x7FF); NPC = PC + offset; @@ -251,33 +251,33 @@ decode QUADRANT default Unknown::unknown() { }}); format CompressedLoad { 0x1: c_fldsp({{ - ldisp = CIMM5<4:3> << 3 | - CIMM1 << 5 | - CIMM5<2:0> << 6; + offset = CIMM5<4:3> << 3 | + CIMM1 << 5 | + CIMM5<2:0> << 6; }}, {{ Fc1_bits = Mem; }}, {{ - EA = sp + ldisp; + EA = sp + offset; }}); 0x2: c_lwsp({{ - ldisp = CIMM5<4:2> << 2 | - CIMM1 << 5 | - CIMM5<1:0> << 6; + offset = CIMM5<4:2> << 2 | + CIMM1 << 5 | + CIMM5<1:0> << 6; }}, {{ assert(RC1 != 0); Rc1_sd = Mem_sw; }}, {{ - EA = sp + ldisp; + EA = sp + offset; }}); 0x3: c_ldsp({{ - ldisp = CIMM5<4:3> << 3 | - CIMM1 << 5 | - CIMM5<2:0> << 6; + offset = CIMM5<4:3> << 3 | + CIMM1 << 5 | + CIMM5<2:0> << 6; }}, {{ assert(RC1 != 0); Rc1_sd = Mem_sd; }}, {{ - EA = sp + ldisp; + EA = sp + offset; }}); } 0x4: decode CFUNCT1 { @@ -310,28 +310,28 @@ decode QUADRANT default Unknown::unknown() { } format CompressedStore { 0x5: c_fsdsp({{ - sdisp = CIMM6<5:3> << 3 | - CIMM6<2:0> << 6; + offset = CIMM6<5:3> << 3 | + CIMM6<2:0> << 6; }}, {{ Mem_ud = Fc2_bits; }}, {{ - EA = sp + sdisp; + EA = sp + offset; }}); 0x6: c_swsp({{ - sdisp = CIMM6<5:2> << 2 | - CIMM6<1:0> << 6; + offset = CIMM6<5:2> << 2 | + CIMM6<1:0> << 6; }}, {{ Mem_uw = Rc2_uw; }}, {{ - EA = sp + sdisp; + EA = sp + offset; }}); 0x7: c_sdsp({{ - sdisp = CIMM6<5:3> << 3 | - CIMM6<2:0> << 6; + offset = CIMM6<5:3> << 3 | + CIMM6<2:0> << 6; }}, {{ Mem = Rc2; }}, {{ - EA = sp + sdisp; + EA = sp + offset; }}); } } diff --git a/src/arch/riscv/isa/formats/mem.isa b/src/arch/riscv/isa/formats/mem.isa index bce76c4d5..ef5f9527c 100644 --- a/src/arch/riscv/isa/formats/mem.isa +++ b/src/arch/riscv/isa/formats/mem.isa @@ -33,72 +33,6 @@ // // Memory operation instructions // -output header {{ - class Load : public RiscvStaticInst - { - public: - /// Displacement for EA calculation (signed). - int64_t ldisp; - - protected: - /// Memory request flags. See mem_req_base.hh. - Request::Flags memAccessFlags; - - /// Constructor - Load(const char *mnem, ExtMachInst _machInst, OpClass __opClass) - : RiscvStaticInst(mnem, _machInst, __opClass), ldisp(0) - {} - - std::string - generateDisassembly(Addr pc, const SymbolTable *symtab) const; - }; - - class Store : public RiscvStaticInst - { - public: - /// Displacement for EA calculation (signed). - int64_t sdisp; - - protected: - /// Memory request flags. See mem_req_base.hh. - Request::Flags memAccessFlags; - - /// Constructor - Store(const char *mnem, ExtMachInst _machInst, OpClass __opClass) - : RiscvStaticInst(mnem, _machInst, __opClass), sdisp(0) - { - sdisp = IMM5 | (IMM7 << 5); - if (IMMSIGN > 0) - sdisp |= ~((uint64_t)0xFFF); - } - - std::string - generateDisassembly(Addr pc, const SymbolTable *symtab) const; - }; - -}}; - - -output decoder {{ - std::string - Load::generateDisassembly(Addr pc, const SymbolTable *symtab) const - { - std::stringstream ss; - ss << mnemonic << ' ' << registerName(_destRegIdx[0]) << ", " << - ldisp << '(' << registerName(_srcRegIdx[0]) << ')'; - return ss.str(); - } - - std::string - Store::generateDisassembly(Addr pc, const SymbolTable *symtab) const - { - std::stringstream ss; - ss << mnemonic << ' ' << registerName(_srcRegIdx[1]) << ", " << - sdisp << '(' << registerName(_srcRegIdx[0]) << ')'; - return ss.str(); - } -}}; - def template LoadStoreDeclare {{ /** * Static instruction class for "%(mnemonic)s". @@ -320,24 +254,24 @@ def template StoreCompleteAcc {{ } }}; -def format Load(memacc_code, ea_code = {{EA = Rs1 + ldisp;}}, mem_flags=[], +def format Load(memacc_code, ea_code = {{EA = Rs1 + offset;}}, mem_flags=[], inst_flags=[]) {{ offset_code = """ - ldisp = IMM12; + offset = IMM12; if (IMMSIGN > 0) - ldisp |= ~((uint64_t)0xFFF); + offset |= ~((uint64_t)0xFFF); """ (header_output, decoder_output, decode_block, exec_output) = \ LoadStoreBase(name, Name, offset_code, ea_code, memacc_code, mem_flags, inst_flags, 'Load', exec_template_base='Load') }}; -def format Store(memacc_code, ea_code={{EA = Rs1 + sdisp;}}, mem_flags=[], +def format Store(memacc_code, ea_code={{EA = Rs1 + offset;}}, mem_flags=[], inst_flags=[]) {{ offset_code = """ - sdisp = IMM5 | (IMM7 << 5); + offset = IMM5 | (IMM7 << 5); if (IMMSIGN > 0) - sdisp |= ~((uint64_t)0xFFF); + offset |= ~((uint64_t)0xFFF); """ (header_output, decoder_output, decode_block, exec_output) = \ LoadStoreBase(name, Name, offset_code, ea_code, memacc_code, mem_flags, diff --git a/src/arch/riscv/isa/includes.isa b/src/arch/riscv/isa/includes.isa index cd43996e8..0723620ea 100644 --- a/src/arch/riscv/isa/includes.isa +++ b/src/arch/riscv/isa/includes.isa @@ -42,6 +42,7 @@ output header {{ #include <tuple> #include <vector> +#include "arch/riscv/insts/mem.hh" #include "arch/riscv/insts/standard.hh" #include "arch/riscv/insts/static_inst.hh" #include "arch/riscv/insts/unknown.hh" |