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Back-ported DVCon turorial changes

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This commit is contained in:
Eyck Jentzsch
2018-11-08 13:31:28 +01:00
parent 124a308ffa
commit 20b3665003
86 changed files with 429488 additions and 4424 deletions
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288
riscv/incl/iss/arch/riscv_hart_msu_vp.h
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@ -1,5 +1,5 @@
/*******************************************************************************
* Copyright (C) 2017, MINRES Technologies GmbH
* Copyright (C) 2017, 2018, MINRES Technologies GmbH
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
@ -37,21 +37,26 @@
#include "iss/arch/traits.h"
#include "iss/arch_if.h"
#include "iss/instrumentation_if.h"
#include "iss/log_categories.h"
#include "iss/vm_if.h"
#include "iss/instrumentation_if.h"
#include <array>
#include <elfio/elfio.hpp>
#include <iomanip>
#include <sstream>
#include <type_traits>
#include <unordered_map>
#include <util/bit_field.h>
#include <util/ities.h>
#include <util/sparse_array.h>
#include <util/bit_field.h>
#include <array>
#include <type_traits>
#define likely(x) __builtin_expect(!!(x), 1)
#define unlikely(x) __builtin_expect(!!(x), 0)
#if defined(__GNUC__)
#define likely(x) __builtin_expect(!!(x), 1)
#define unlikely(x) __builtin_expect(!!(x), 0)
#else
#define likely(x) x
#define unlikely(x) x
#endif
namespace iss {
namespace arch {
@ -165,29 +170,29 @@ enum riscv_csr {
namespace {
std::array<const char, 4> lvl = { { 'U', 'S', 'H', 'M' } };
std::array<const char, 4> lvl = {{'U', 'S', 'H', 'M'}};
std::array<const char*, 16> trap_str = { { ""
"Instruction address misaligned", //0
"Instruction access fault", //1
"Illegal instruction", //2
"Breakpoint", //3
"Load address misaligned", //4
"Load access fault", //5
"Store/AMO address misaligned", //6
"Store/AMO access fault", //7
"Environment call from U-mode", //8
"Environment call from S-mode", //9
"Reserved", //a
"Environment call from M-mode", //b
"Instruction page fault", //c
"Load page fault", //d
"Reserved", //e
"Store/AMO page fault" } };
std::array<const char*, 12> irq_str = { {
"User software interrupt", "Supervisor software interrupt", "Reserved", "Machine software interrupt",
"User timer interrupt", "Supervisor timer interrupt", "Reserved", "Machine timer interrupt", "User external interrupt",
"Supervisor external interrupt", "Reserved", "Machine external interrupt" } };
std::array<const char *, 16> trap_str = {{""
"Instruction address misaligned", // 0
"Instruction access fault", // 1
"Illegal instruction", // 2
"Breakpoint", // 3
"Load address misaligned", // 4
"Load access fault", // 5
"Store/AMO address misaligned", // 6
"Store/AMO access fault", // 7
"Environment call from U-mode", // 8
"Environment call from S-mode", // 9
"Reserved", // a
"Environment call from M-mode", // b
"Instruction page fault", // c
"Load page fault", // d
"Reserved", // e
"Store/AMO page fault"}};
std::array<const char *, 12> irq_str = {
{"User software interrupt", "Supervisor software interrupt", "Reserved", "Machine software interrupt",
"User timer interrupt", "Supervisor timer interrupt", "Reserved", "Machine timer interrupt",
"User external interrupt", "Supervisor external interrupt", "Reserved", "Machine external interrupt"}};
enum {
PGSHIFT = 12,
@ -229,7 +234,7 @@ struct vm_info {
int idxbits;
int ptesize;
uint64_t ptbase;
bool is_active() { return levels;}
bool is_active() { return levels; }
};
class trap_load_access_fault : public trap_access {
@ -272,10 +277,9 @@ public:
using wr_csr_f = iss::status (this_class::*)(unsigned addr, reg_t);
// primary template
template<class T, class Enable = void> struct hart_state { };
template <class T, class Enable = void> struct hart_state {};
// specialization 32bit
template <typename T>
class hart_state<T, typename std::enable_if<std::is_same<T, uint32_t>::value>::type> {
template <typename T> class hart_state<T, typename std::enable_if<std::is_same<T, uint32_t>::value>::type> {
public:
BEGIN_BF_DECL(mstatus_t, T);
// SD bit is read-only and is set when either the FS or XS bits encode a Dirty state (i.e., SD=((FS==11) OR XS==11)))
@ -318,10 +322,10 @@ public:
static const reg_t mstatus_reset_val = 0;
void write_mstatus(T val, unsigned priv_lvl){
void write_mstatus(T val, unsigned priv_lvl) {
auto mask = get_mask(priv_lvl);
auto new_val = (mstatus.st.value & ~mask) | (val & mask);
mstatus=new_val;
mstatus = new_val;
}
T satp;
@ -329,11 +333,15 @@ public:
static constexpr T get_misa() { return (1UL << 30) | ISA_I | ISA_M | ISA_A | ISA_U | ISA_S | ISA_M; }
static constexpr uint32_t get_mask(unsigned priv_lvl) {
#if __cplusplus < 201402L
return priv_lvl == PRIV_U ? 0x80000011UL : priv_lvl == PRIV_S ? 0x800de133UL : 0x807ff9ddUL;
#else
switch (priv_lvl) {
case PRIV_U: return 0x80000011UL; // 0b1000 0000 0000 0000 0000 0000 0001 0001
case PRIV_S: return 0x800de133UL; // 0b1000 0000 0000 1101 1110 0001 0011 0011
default: return 0x807ff9ddUL; // 0b1000 0000 0111 1111 1111 1001 1011 1011
}
#endif
}
static inline vm_info decode_vm_info(uint32_t state, T sptbr) {
@ -349,8 +357,7 @@ public:
}
};
// specialization 64bit
template <typename T>
class hart_state<T, typename std::enable_if<std::is_same<T, uint64_t>::value>::type> {
template <typename T> class hart_state<T, typename std::enable_if<std::is_same<T, uint64_t>::value>::type> {
public:
BEGIN_BF_DECL(mstatus_t, T);
// SD bit is read-only and is set when either the FS or XS bits encode a Dirty state (i.e., SD=((FS==11) OR XS==11)))
@ -397,17 +404,17 @@ public:
static const reg_t mstatus_reset_val = 0xa00000000;
void write_mstatus(T val, unsigned priv_lvl){
void write_mstatus(T val, unsigned priv_lvl) {
T old_val = mstatus;
auto mask = get_mask(priv_lvl);
auto new_val = (old_val & ~mask) | (val & mask);
if((new_val&mstatus.SXL.Mask)==0){
new_val |= old_val&mstatus.SXL.Mask;
if ((new_val & mstatus.SXL.Mask) == 0) {
new_val |= old_val & mstatus.SXL.Mask;
}
if((new_val&mstatus.UXL.Mask)==0){
new_val |= old_val&mstatus.UXL.Mask;
if ((new_val & mstatus.UXL.Mask) == 0) {
new_val |= old_val & mstatus.UXL.Mask;
}
mstatus=new_val;
mstatus = new_val;
}
T satp;
@ -426,9 +433,9 @@ public:
if (state == PRIV_M) return {0, 0, 0, 0};
if (state <= PRIV_S)
switch (bit_sub<60, 4>(sptbr)) {
case 0: return {0, 0, 0, 0}; // off
case 8: return {3, 9, 8, bit_sub<0, 44>(sptbr) << PGSHIFT};// SV39
case 9: return {4, 9, 8, bit_sub<0, 44>(sptbr) << PGSHIFT};// SV48
case 0: return {0, 0, 0, 0}; // off
case 8: return {3, 9, 8, bit_sub<0, 44>(sptbr) << PGSHIFT};// SV39
case 9: return {4, 9, 8, bit_sub<0, 44>(sptbr) << PGSHIFT};// SV48
case 10: return {5, 9, 8, bit_sub<0, 44>(sptbr) << PGSHIFT};// SV57
case 11: return {6, 9, 8, bit_sub<0, 44>(sptbr) << PGSHIFT};// SV64
default: abort();
@ -442,12 +449,12 @@ public:
const typename super::reg_t PGMASK = PGSIZE - 1;
constexpr reg_t get_irq_mask(size_t mode) {
std::array<const reg_t,4> m = { {
0b000100010001,// U mode
0b001100110011,// S mode
0,
0b101110111011 // M mode
}};
std::array<const reg_t, 4> m = {{
0b000100010001, // U mode
0b001100110011, // S mode
0,
0b101110111011 // M mode
}};
return m[mode];
}
@ -456,7 +463,7 @@ public:
void reset(uint64_t address) override;
std::pair<uint64_t,bool> load_file(std::string name, int type = -1) override;
std::pair<uint64_t, bool> load_file(std::string name, int type = -1) override;
virtual phys_addr_t virt2phys(const iss::addr_t &addr) override;
@ -468,40 +475,39 @@ public:
virtual uint64_t leave_trap(uint64_t flags) override;
void wait_until(uint64_t flags) override;
void disass_output(uint64_t pc, const std::string instr) override {
std::stringstream s;
s << "[p:" << lvl[this->reg.machine_state] << ";s:0x" << std::hex << std::setfill('0')
<< std::setw(sizeof(reg_t) * 2) << (reg_t)state.mstatus << std::dec << ";c:" << this->reg.icount << "]";
CLOG(INFO, disass) << "0x"<<std::setw(16)<<std::setfill('0')<<std::hex<<pc<<"\t\t"<<instr<<"\t"<<s.str();
CLOG(INFO, disass) << "0x" << std::setw(16) << std::setfill('0') << std::hex << pc << "\t\t" << instr << "\t" << s.str();
};
iss::instrumentation_if* get_instrumentation_if() override {return &instr_if;}
iss::instrumentation_if *get_instrumentation_if() override { return &instr_if; }
protected:
struct riscv_instrumentation_if : public iss::instrumentation_if{
struct riscv_instrumentation_if : public iss::instrumentation_if {
riscv_instrumentation_if(riscv_hart_msu_vp<BASE>& arch):arch(arch){}
riscv_instrumentation_if(riscv_hart_msu_vp<BASE> &arch)
: arch(arch) {}
/**
* get the name of this architecture
*
* @return the name of this architecture
*/
const std::string core_type_name() const override {return traits<BASE>::core_type;}
const std::string core_type_name() const override { return traits<BASE>::core_type; }
virtual uint64_t get_pc(){ return arch.get_pc(); };
virtual uint64_t get_pc() { return arch.get_pc(); };
virtual uint64_t get_next_pc(){ return arch.get_next_pc(); };
virtual uint64_t get_next_pc() { return arch.get_next_pc(); };
virtual void set_curr_instr_cycles(unsigned cycles){ arch.cycle_offset+=cycles-1; };
virtual void set_curr_instr_cycles(unsigned cycles) { arch.cycle_offset += cycles - 1; };
riscv_hart_msu_vp<BASE>& arch;
riscv_hart_msu_vp<BASE> &arch;
};
friend struct riscv_instrumentation_if;
addr_t get_pc(){return this->reg.PC;}
addr_t get_next_pc(){return this->reg.NEXT_PC;}
addr_t get_pc() { return this->reg.PC; }
addr_t get_next_pc() { return this->reg.NEXT_PC; }
virtual iss::status read_mem(phys_addr_t addr, unsigned length, uint8_t *const data);
virtual iss::status write_mem(phys_addr_t addr, unsigned length, const uint8_t *const data);
@ -512,7 +518,7 @@ protected:
hart_state<reg_t> state;
uint64_t cycle_offset;
reg_t fault_data;
std::array<vm_info,2> vm;
std::array<vm_info, 2> vm;
uint64_t tohost = tohost_dflt;
uint64_t fromhost = fromhost_dflt;
unsigned to_host_wr_cnt = 0;
@ -541,15 +547,18 @@ private:
iss::status write_ip(unsigned addr, reg_t val);
iss::status read_satp(unsigned addr, reg_t &val);
iss::status write_satp(unsigned addr, reg_t val);
iss::status read_fcsr(unsigned addr, reg_t& val);
iss::status read_fcsr(unsigned addr, reg_t &val);
iss::status write_fcsr(unsigned addr, reg_t val);
protected:
void check_interrupt();
};
template <typename BASE>
riscv_hart_msu_vp<BASE>::riscv_hart_msu_vp()
: state(), cycle_offset(0), instr_if(*this) {
: state()
, cycle_offset(0)
, instr_if(*this) {
csr[misa] = hart_state<reg_t>::get_misa();
uart_buf.str("");
// read-only registers
@ -591,27 +600,26 @@ riscv_hart_msu_vp<BASE>::riscv_hart_msu_vp()
csr_wr_cb[fflags] = &riscv_hart_msu_vp<BASE>::write_fcsr;
csr_rd_cb[frm] = &riscv_hart_msu_vp<BASE>::read_fcsr;
csr_wr_cb[frm] = &riscv_hart_msu_vp<BASE>::write_fcsr;
}
template <typename BASE> std::pair<uint64_t,bool> riscv_hart_msu_vp<BASE>::load_file(std::string name, int type) {
template <typename BASE> std::pair<uint64_t, bool> riscv_hart_msu_vp<BASE>::load_file(std::string name, int type) {
FILE *fp = fopen(name.c_str(), "r");
if (fp) {
std::array<char, 5> buf;
auto n = fread(buf.data(), 1, 4, fp);
std::array<char, 5> buf;
auto n = fread(buf.data(), 1, 4, fp);
if (n != 4) throw std::runtime_error("input file has insufficient size");
buf[4] = 0;
if (strcmp(buf.data() + 1, "ELF") == 0) {
if (strcmp(buf.data() + 1, "ELF") == 0) {
fclose(fp);
// Create elfio reader
ELFIO::elfio reader;
// Load ELF data
if (!reader.load(name)) throw std::runtime_error("could not process elf file");
// check elf properties
if ( reader.get_class() != ELFCLASS32 )
if(sizeof(reg_t) == 4) throw std::runtime_error("wrong elf class in file");
if (reader.get_class() != ELFCLASS32)
if (sizeof(reg_t) == 4) throw std::runtime_error("wrong elf class in file");
if (reader.get_type() != ET_EXEC) throw std::runtime_error("wrong elf type in file");
if ( reader.get_machine() != EM_RISCV ) throw std::runtime_error("wrong elf machine in file");
if (reader.get_machine() != EM_RISCV) throw std::runtime_error("wrong elf machine in file");
for (const auto pseg : reader.segments) {
const auto fsize = pseg->get_file_size(); // 0x42c/0x0
const auto seg_data = pseg->get_data();
@ -642,9 +650,9 @@ template <typename BASE>
iss::status riscv_hart_msu_vp<BASE>::read(const iss::addr_t &addr, unsigned length, uint8_t *const data) {
#ifndef NDEBUG
if (addr.access && iss::access_type::DEBUG) {
LOG(DEBUG) << "debug read of " << length << " bytes @addr " << addr;
LOG(TRACE) << "debug read of " << length << " bytes @addr " << addr;
} else {
LOG(DEBUG) << "read of " << length << " bytes @addr " << addr;
LOG(TRACE) << "read of " << length << " bytes @addr " << addr;
}
#endif
try {
@ -716,26 +724,26 @@ iss::status riscv_hart_msu_vp<BASE>::read(const iss::addr_t &addr, unsigned leng
template <typename BASE>
iss::status riscv_hart_msu_vp<BASE>::write(const iss::addr_t &addr, unsigned length, const uint8_t *const data) {
#ifndef NDEBUG
const char *prefix = (addr.access && iss::access_type::DEBUG)? "debug " : "";
const char *prefix = (addr.access && iss::access_type::DEBUG) ? "debug " : "";
switch (length) {
case 8:
LOG(DEBUG) << prefix << "write of " << length << " bytes (0x" << std::hex << *(uint64_t *)&data[0] << std::dec
LOG(TRACE) << prefix << "write of " << length << " bytes (0x" << std::hex << *(uint64_t *)&data[0] << std::dec
<< ") @addr " << addr;
break;
case 4:
LOG(DEBUG) << prefix << "write of " << length << " bytes (0x" << std::hex << *(uint32_t *)&data[0] << std::dec
LOG(TRACE) << prefix << "write of " << length << " bytes (0x" << std::hex << *(uint32_t *)&data[0] << std::dec
<< ") @addr " << addr;
break;
case 2:
LOG(DEBUG) << prefix << "write of " << length << " bytes (0x" << std::hex << *(uint16_t *)&data[0] << std::dec
LOG(TRACE) << prefix << "write of " << length << " bytes (0x" << std::hex << *(uint16_t *)&data[0] << std::dec
<< ") @addr " << addr;
break;
case 1:
LOG(DEBUG) << prefix << "write of " << length << " bytes (0x" << std::hex << (uint16_t)data[0] << std::dec
LOG(TRACE) << prefix << "write of " << length << " bytes (0x" << std::hex << (uint16_t)data[0] << std::dec
<< ") @addr " << addr;
break;
default:
LOG(DEBUG) << prefix << "write of " << length << " bytes @addr " << addr;
LOG(TRACE) << prefix << "write of " << length << " bytes @addr " << addr;
}
#endif
try {
@ -760,7 +768,8 @@ iss::status riscv_hart_msu_vp<BASE>::write(const iss::addr_t &addr, unsigned len
}
}
auto res = write_mem(BASE::v2p(addr), length, data);
if (unlikely(res != iss::Ok)) this->reg.trap_state = (1 << 31) | (5 << 16); // issue trap 7 (Store/AMO access fault)
if (unlikely(res != iss::Ok))
this->reg.trap_state = (1 << 31) | (5 << 16); // issue trap 7 (Store/AMO access fault)
return res;
} catch (trap_access &ta) {
this->reg.trap_state = (1 << 31) | ta.id;
@ -857,7 +866,7 @@ template <typename BASE> iss::status riscv_hart_msu_vp<BASE>::write_csr(unsigned
}
template <typename BASE> iss::status riscv_hart_msu_vp<BASE>::read_cycle(unsigned addr, reg_t &val) {
auto cycle_val= this->reg.icount + cycle_offset;
auto cycle_val = this->reg.icount + cycle_offset;
if (addr == mcycle) {
val = static_cast<reg_t>(cycle_val);
} else if (addr == mcycleh) {
@ -868,7 +877,7 @@ template <typename BASE> iss::status riscv_hart_msu_vp<BASE>::read_cycle(unsigne
}
template <typename BASE> iss::status riscv_hart_msu_vp<BASE>::read_time(unsigned addr, reg_t &val) {
uint64_t time_val=(this->reg.icount + cycle_offset) / (100000000/32768-1); //-> ~3052;
uint64_t time_val = (this->reg.icount + cycle_offset) / (100000000 / 32768 - 1); //-> ~3052;
if (addr == time) {
val = static_cast<reg_t>(time_val);
} else if (addr == timeh) {
@ -925,7 +934,7 @@ template <typename BASE> iss::status riscv_hart_msu_vp<BASE>::write_ip(unsigned
auto req_priv_lvl = addr >> 8;
if (this->reg.machine_state < req_priv_lvl) throw illegal_instruction_fault(this->fault_data);
auto mask = get_irq_mask(req_priv_lvl);
mask &= ~(1<<7); // MTIP is read only
mask &= ~(1 << 7); // MTIP is read only
csr[mip] = (csr[mip] & ~mask) | (val & mask);
check_interrupt();
return iss::Ok;
@ -953,16 +962,16 @@ template <typename BASE> iss::status riscv_hart_msu_vp<BASE>::write_satp(unsigne
update_vm_info();
return iss::Ok;
}
template<typename BASE> iss::status riscv_hart_msu_vp<BASE>::read_fcsr(unsigned addr, reg_t& val) {
switch(addr){
case 1: //fflags, 4:0
template <typename BASE> iss::status riscv_hart_msu_vp<BASE>::read_fcsr(unsigned addr, reg_t &val) {
switch (addr) {
case 1: // fflags, 4:0
val = bit_sub<0, 5>(this->get_fcsr());
break;
case 2: // frm, 7:5
val = bit_sub<5, 3>(this->get_fcsr());
break;
break;
case 3: // fcsr
val=this->get_fcsr();
val = this->get_fcsr();
break;
default:
return iss::Err;
@ -970,16 +979,16 @@ template<typename BASE> iss::status riscv_hart_msu_vp<BASE>::read_fcsr(unsigned
return iss::Ok;
}
template<typename BASE> iss::status riscv_hart_msu_vp<BASE>::write_fcsr(unsigned addr, reg_t val) {
switch(addr){
case 1: //fflags, 4:0
this->set_fcsr( (this->get_fcsr() & 0xffffffe0) | (val&0x1f));
template <typename BASE> iss::status riscv_hart_msu_vp<BASE>::write_fcsr(unsigned addr, reg_t val) {
switch (addr) {
case 1: // fflags, 4:0
this->set_fcsr((this->get_fcsr() & 0xffffffe0) | (val & 0x1f));
break;
case 2: // frm, 7:5
this->set_fcsr( (this->get_fcsr() & 0xffffff1f) | ((val&0x7)<<5));
break;
this->set_fcsr((this->get_fcsr() & 0xffffff1f) | ((val & 0x7) << 5));
break;
case 3: // fcsr
this->set_fcsr(val&0xff);
this->set_fcsr(val & 0xff);
break;
default:
return iss::Err;
@ -992,7 +1001,7 @@ iss::status riscv_hart_msu_vp<BASE>::read_mem(phys_addr_t paddr, unsigned length
if ((paddr.val + length) > mem.size()) return iss::Err;
switch (paddr.val) {
case 0x0200BFF8: { // CLINT base, mtime reg
if(sizeof(reg_t)<length) return iss::Err;
if (sizeof(reg_t) < length) return iss::Err;
reg_t time_val;
this->read_csr(time, time_val);
std::copy((uint8_t *)&time_val, ((uint8_t *)&time_val) + length, data);
@ -1054,10 +1063,10 @@ iss::status riscv_hart_msu_vp<BASE>::write_mem(phys_addr_t paddr, unsigned lengt
if (tohost_upper || (tohost_lower && to_host_wr_cnt > 0)) {
switch (hostvar >> 48) {
case 0:
if (hostvar != 0x1){
if (hostvar != 0x1) {
LOG(FATAL) << "tohost value is 0x" << std::hex << hostvar << std::dec << " (" << hostvar
<< "), stopping simulation";
}else{
} else {
LOG(INFO) << "tohost value is 0x" << std::hex << hostvar << std::dec << " (" << hostvar
<< "), stopping simulation";
}
@ -1087,22 +1096,20 @@ iss::status riscv_hart_msu_vp<BASE>::write_mem(phys_addr_t paddr, unsigned lengt
return iss::Ok;
}
template<typename BASE>
inline void riscv_hart_msu_vp<BASE>::reset(uint64_t address) {
template <typename BASE> inline void riscv_hart_msu_vp<BASE>::reset(uint64_t address) {
BASE::reset(address);
state.mstatus = hart_state<reg_t>::mstatus_reset_val;
update_vm_info();
}
template<typename BASE>
inline void riscv_hart_msu_vp<BASE>::update_vm_info() {
template <typename BASE> inline void riscv_hart_msu_vp<BASE>::update_vm_info() {
vm[1] = hart_state<reg_t>::decode_vm_info(this->reg.machine_state, state.satp);
BASE::addr_mode[3]=BASE::addr_mode[2]=vm[1].is_active()?iss::address_type::VIRTUAL:iss::address_type::PHYSICAL;
if(state.mstatus.MPRV)
BASE::addr_mode[3]=BASE::addr_mode[2] = vm[1].is_active()? iss::address_type::VIRTUAL : iss::address_type::PHYSICAL;
if (state.mstatus.MPRV)
vm[0] = hart_state<reg_t>::decode_vm_info(state.mstatus.MPP, state.satp);
else
vm[0] = vm[1];
BASE::addr_mode[1]=BASE::addr_mode[0]=vm[0].is_active()?iss::address_type::VIRTUAL:iss::address_type::PHYSICAL;
BASE::addr_mode[1] = BASE::addr_mode[0]=vm[0].is_active() ? iss::address_type::VIRTUAL : iss::address_type::PHYSICAL;
ptw.clear();
}
@ -1117,7 +1124,7 @@ template <typename BASE> void riscv_hart_msu_vp<BASE>::check_interrupt() {
// any synchronous traps.
auto ena_irq = ip & ie;
auto mie = state.mstatus.MIE;
bool mie = state.mstatus.MIE;
auto m_enabled = this->reg.machine_state < PRIV_M || (this->reg.machine_state == PRIV_M && mie);
auto enabled_interrupts = m_enabled ? ena_irq & ~ideleg : 0;
@ -1153,10 +1160,10 @@ typename riscv_hart_msu_vp<BASE>::phys_addr_t riscv_hart_msu_vp<BASE>::virt2phys
#endif
} else {
uint32_t mode = type != iss::access_type::FETCH && state.mstatus.MPRV ? // MPRV
state.mstatus.MPP:
state.mstatus.MPP :
this->reg.machine_state;
const vm_info& vm = this->vm[static_cast<uint16_t>(type)/2];
const vm_info &vm = this->vm[static_cast<uint16_t>(type) / 2];
const bool s_mode = mode == PRIV_S;
const bool sum = state.mstatus.SUM;
@ -1175,8 +1182,8 @@ typename riscv_hart_msu_vp<BASE>::phys_addr_t riscv_hart_msu_vp<BASE>::virt2phys
// check that physical address of PTE is legal
reg_t pte = 0;
const uint8_t res =
this->read(phys_addr_t{addr.access, traits<BASE>::MEM, base + idx * vm.ptesize}, vm.ptesize, (uint8_t *)&pte);
const uint8_t res = this->read(phys_addr_t{addr.access, traits<BASE>::MEM, base + idx * vm.ptesize},
vm.ptesize, (uint8_t *)&pte);
if (res != 0) throw trap_load_access_fault(addr.val);
const reg_t ppn = pte >> PTE_PPN_SHIFT;
@ -1186,9 +1193,10 @@ typename riscv_hart_msu_vp<BASE>::phys_addr_t riscv_hart_msu_vp<BASE>::virt2phys
break;
} else if (!(pte & PTE_V) || (!(pte & PTE_R) && (pte & PTE_W))) {
break;
} else if (type == iss::access_type::FETCH ? !(pte & PTE_X)
: type == iss::access_type::READ ? !(pte & PTE_R) && !(mxr && (pte & PTE_X))
: !((pte & PTE_R) && (pte & PTE_W))) {
} else if (type == iss::access_type::FETCH
? !(pte & PTE_X)
: type == iss::access_type::READ ? !(pte & PTE_R) && !(mxr && (pte & PTE_X))
: !((pte & PTE_R) && (pte & PTE_W))) {
break;
} else if ((ppn & ((reg_t(1) << ptshift) - 1)) != 0) {
break;
@ -1254,8 +1262,8 @@ template <typename BASE> uint64_t riscv_hart_msu_vp<BASE>::enter_trap(uint64_t f
csr[uepc | (new_priv << 8)] = this->reg.NEXT_PC; // store next address if interrupt
this->reg.pending_trap = 0;
}
size_t adr=ucause | (new_priv << 8);
csr[adr] = (trap_id<<31)+cause;
size_t adr = ucause | (new_priv << 8);
csr[adr] = (trap_id << 31) + cause;
// update mstatus
// xPP field of mstatus is written with the active privilege mode at the time
// of the trap; the x PIE field of mstatus
@ -1265,15 +1273,18 @@ template <typename BASE> uint64_t riscv_hart_msu_vp<BASE>::enter_trap(uint64_t f
// store the actual privilege level in yPP and store interrupt enable flags
switch (new_priv) {
case PRIV_M:
state.mstatus.MPP=cur_priv;
state.mstatus.MPIE=state.mstatus.MIE;
state.mstatus.MPP = cur_priv;
state.mstatus.MPIE = state.mstatus.MIE;
state.mstatus.MIE = false;
break;
case PRIV_S:
state.mstatus.SPP = cur_priv;
state.mstatus.SPIE=state.mstatus.SIE;
state.mstatus.SPIE = state.mstatus.SIE;
state.mstatus.SIE = false;
break;
case PRIV_U:
state.mstatus.UPIE=state.mstatus.UIE;
state.mstatus.UPIE = state.mstatus.UIE;
state.mstatus.UIE = false;
break;
default:
break;
@ -1288,11 +1299,12 @@ template <typename BASE> uint64_t riscv_hart_msu_vp<BASE>::enter_trap(uint64_t f
// reset trap state
this->reg.machine_state = new_priv;
this->reg.trap_state = 0;
std::array<char, 32> buffer;
sprintf(buffer.data(), "0x%016lx", addr);
CLOG(INFO, disass) << (trap_id ? "Interrupt" : "Trap") << " with cause '" << (trap_id ? irq_str[cause] : trap_str[cause])<<"' ("<<trap_id<<")"
<< " at address " << buffer.data() << " occurred, changing privilege level from " << lvl[cur_priv]
<< " to " << lvl[new_priv];
std::array<char, 32> buffer;
sprintf(buffer.data(), "0x%016lx", addr);
CLOG(INFO, disass) << (trap_id ? "Interrupt" : "Trap") << " with cause '"
<< (trap_id ? irq_str[cause] : trap_str[cause]) << "' (" << trap_id << ")"
<< " at address " << buffer.data() << " occurred, changing privilege level from "
<< lvl[cur_priv] << " to " << lvl[new_priv];
update_vm_info();
return this->reg.NEXT_PC;
}
@ -1314,22 +1326,23 @@ template <typename BASE> uint64_t riscv_hart_msu_vp<BASE>::leave_trap(uint64_t f
switch (inst_priv) {
case PRIV_M:
this->reg.machine_state = state.mstatus.MPP;
state.mstatus.MPP=0; // clear mpp to U mode
state.mstatus.MIE=state.mstatus.MPIE;
state.mstatus.MPP = 0; // clear mpp to U mode
state.mstatus.MIE = state.mstatus.MPIE;
break;
case PRIV_S:
this->reg.machine_state = state.mstatus.SPP;
state.mstatus.SPP= 0; // clear spp to U mode
state.mstatus.SIE=state.mstatus.SPIE;
state.mstatus.SPP = 0; // clear spp to U mode
state.mstatus.SIE = state.mstatus.SPIE;
break;
case PRIV_U:
this->reg.machine_state = 0;
state.mstatus.UIE=state.mstatus.UPIE;
state.mstatus.UIE = state.mstatus.UPIE;
break;
}
// sets the pc to the value stored in the x epc register.
this->reg.NEXT_PC = csr[uepc | inst_priv << 8];
CLOG(INFO, disass) << "Executing xRET , changing privilege level from " << lvl[cur_priv] << " to " << lvl[this->reg.machine_state];
CLOG(INFO, disass) << "Executing xRET , changing privilege level from " << lvl[cur_priv] << " to "
<< lvl[this->reg.machine_state];
update_vm_info();
return this->reg.NEXT_PC;
}
@ -1345,5 +1358,4 @@ template <typename BASE> void riscv_hart_msu_vp<BASE>::wait_until(uint64_t flags
}
}
#endif /* _RISCV_CORE_H_ */

3
riscv/incl/iss/arch/rv32gc.h
View File

@ -179,7 +179,7 @@ struct rv32gc: public arch_if {
uint64_t get_icount() { return reg.icount;}
bool should_stop(){return false;}
inline bool should_stop() { return interrupt_sim; }
inline phys_addr_t v2p(const iss::addr_t& addr){
if(addr.space != traits<rv32gc>::MEM ||
@ -272,6 +272,7 @@ protected:
std::array<address_type, 4> addr_mode;
bool interrupt_sim=false;
uint32_t get_fcsr(){return reg.FCSR;}
void set_fcsr(uint32_t val){reg.FCSR = val;}

155
riscv/incl/iss/arch/rv32imac.h
View File

@ -1,54 +1,59 @@
////////////////////////////////////////////////////////////////////////////////
// Copyright (C) 2017, MINRES Technologies GmbH
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
//
// 1. Redistributions of source code must retain the above copyright notice,
// this list of conditions and the following disclaimer.
//
// 2. 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.
//
// 3. Neither the name of the copyright holder 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 HOLDER 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.
//
////////////////////////////////////////////////////////////////////////////////
/*******************************************************************************
* Copyright (C) 2017, 2018 MINRES Technologies GmbH
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
*
* 2. 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.
*
* 3. Neither the name of the copyright holder 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 HOLDER 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.
*
*******************************************************************************/
#ifndef _RV32IMAC_H_
#define _RV32IMAC_H_
#include <array>
#include <iss/arch/traits.h>
#include <iss/arch_if.h>
#include <iss/vm_if.h>
#include <iss/arch/traits.h>
#include <array>
namespace iss {
namespace arch {
struct rv32imac;
template<>
struct traits<rv32imac> {
template <> struct traits<rv32imac> {
constexpr static char const* const core_type = "RV32IMAC";
enum constants {XLEN=32, PCLEN=32, MISA_VAL=0b1000000000101000001000100000101, PGSIZE=0x1000, PGMASK=0xfff};
constexpr static char const *const core_type = "RV32IMAC";
enum constants {
XLEN = 32,
PCLEN = 32,
MISA_VAL = 0b1000000000101000001000100000101,
PGSIZE = 0x1000,
PGMASK = 0xfff
};
constexpr static unsigned FP_REGS_SIZE = 0;
@ -87,7 +92,7 @@ struct traits<rv32imac> {
X31,
PC,
NUM_REGS,
NEXT_PC=NUM_REGS,
NEXT_PC = NUM_REGS,
TRAP_STATE,
PENDING_TRAP,
MACHINE_STATE,
@ -99,72 +104,70 @@ struct traits<rv32imac> {
using addr_t = uint32_t;
using code_word_t = uint32_t; //TODO: check removal
using code_word_t = uint32_t; // TODO: check removal
using virt_addr_t = iss::typed_addr_t<iss::address_type::VIRTUAL>;
using phys_addr_t = iss::typed_addr_t<iss::address_type::PHYSICAL>;
constexpr static unsigned reg_bit_width(unsigned r) {
constexpr std::array<const uint32_t, 39> RV32IMAC_reg_size{{32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,32,64}};
return RV32IMAC_reg_size[r];
}
static constexpr std::array<const uint32_t, 39> RV32IMAC_reg_size{
{32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32,
32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 64}};
constexpr static unsigned reg_byte_offset(unsigned r) {
constexpr std::array<const uint32_t, 40> RV32IMAC_reg_byte_offset{{0,4,8,12,16,20,24,28,32,36,40,44,48,52,56,60,64,68,72,76,80,84,88,92,96,100,104,108,112,116,120,124,128,132,136,140,144,148,152,160}};
return RV32IMAC_reg_byte_offset[r];
}
constexpr static unsigned reg_bit_width(unsigned r) { return RV32IMAC_reg_size[r]; }
static constexpr std::array<const uint32_t, 40> RV32IMAC_reg_byte_offset{
{0, 4, 8, 12, 16, 20, 24, 28, 32, 36, 40, 44, 48, 52, 56, 60, 64, 68, 72, 76,
80, 84, 88, 92, 96, 100, 104, 108, 112, 116, 120, 124, 128, 132, 136, 140, 144, 148, 152, 160}};
constexpr static unsigned reg_byte_offset(unsigned r) { return RV32IMAC_reg_byte_offset[r]; }
static const uint64_t addr_mask = (reg_t(1) << (XLEN - 1)) | ((reg_t(1) << (XLEN - 1)) - 1);
enum sreg_flag_e {FLAGS};
enum sreg_flag_e { FLAGS };
enum mem_type_e {MEM, CSR, FENCE, RES};
enum mem_type_e { MEM, CSR, FENCE, RES };
};
struct rv32imac: public arch_if {
struct rv32imac : public arch_if {
using virt_addr_t = typename traits<rv32imac>::virt_addr_t;
using phys_addr_t = typename traits<rv32imac>::phys_addr_t;
using reg_t = typename traits<rv32imac>::reg_t;
using reg_t = typename traits<rv32imac>::reg_t;
using addr_t = typename traits<rv32imac>::addr_t;
rv32imac();
~rv32imac();
void reset(uint64_t address=0) override;
void reset(uint64_t address = 0) override;
uint8_t* get_regs_base_ptr() override;
uint8_t *get_regs_base_ptr() override;
/// deprecated
void get_reg(short idx, std::vector<uint8_t>& value) override {}
void set_reg(short idx, const std::vector<uint8_t>& value) override {}
void get_reg(short idx, std::vector<uint8_t> &value) override {}
void set_reg(short idx, const std::vector<uint8_t> &value) override {}
/// deprecated
bool get_flag(int flag) override {return false;}
void set_flag(int, bool value) override {};
bool get_flag(int flag) override { return false; }
void set_flag(int, bool value) override{};
/// deprecated
void update_flags(operations op, uint64_t opr1, uint64_t opr2) override {};
void update_flags(operations op, uint64_t opr1, uint64_t opr2) override{};
inline
uint64_t get_icount() { return reg.icount;}
inline uint64_t get_icount() { return reg.icount; }
inline
bool should_stop() { return interrupt_sim;}
inline bool should_stop() { return interrupt_sim; }
inline phys_addr_t v2p(const iss::addr_t& addr){
if(addr.space != traits<rv32imac>::MEM ||
addr.type == iss::address_type::PHYSICAL ||
addr_mode[static_cast<uint16_t>(addr.access)&0x3]==address_type::PHYSICAL){
return phys_addr_t(addr.access, addr.space, addr.val&traits<rv32imac>::addr_mask);
inline phys_addr_t v2p(const iss::addr_t &addr) {
if (addr.space != traits<rv32imac>::MEM || addr.type == iss::address_type::PHYSICAL ||
addr_mode[static_cast<uint16_t>(addr.access) & 0x3] == address_type::PHYSICAL) {
return phys_addr_t(addr.access, addr.space, addr.val & traits<rv32imac>::addr_mask);
} else
return virt2phys(addr);
}
virtual phys_addr_t virt2phys(const iss::addr_t& addr);
virtual phys_addr_t virt2phys(const iss::addr_t &addr);
virtual iss::sync_type needed_sync() const { return iss::NO_SYNC; }
inline
uint32_t get_last_branch(){return reg.last_branch;}
inline uint32_t get_last_branch() { return reg.last_branch; }
protected:
struct RV32IMAC_regs {
@ -207,14 +210,12 @@ protected:
} reg;
std::array<address_type, 4> addr_mode;
bool interrupt_sim=false;
uint32_t get_fcsr(){return 0;}
void set_fcsr(uint32_t val){}
bool interrupt_sim = false;
uint32_t get_fcsr() { return 0; }
void set_fcsr(uint32_t val) {}
};
}
}
}
#endif /* _RV32IMAC_H_ */

5
riscv/incl/iss/arch/rv64ia.h
View File

@ -144,9 +144,9 @@ struct rv64ia: public arch_if {
/// deprecated
void update_flags(operations op, uint64_t opr1, uint64_t opr2) override {};
uint64_t get_icount() { return reg.icount;}
inline uint64_t get_icount() { return reg.icount; }
bool should_stop(){return false;}
inline bool should_stop() { return interrupt_sim; }
inline phys_addr_t v2p(const iss::addr_t& addr){
if(addr.space != traits<rv64ia>::MEM ||
@ -206,6 +206,7 @@ protected:
std::array<address_type, 4> addr_mode;
bool interrupt_sim=false;
uint32_t get_fcsr(){return 0;}
void set_fcsr(uint32_t val){}