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make cpu type in core_complex configurable

This commit is contained in:
Eyck Jentzsch 2021-05-16 15:06:42 +02:00
parent 9c456ba8f2
commit a35974c9f5
7 changed files with 1746 additions and 543 deletions
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24
CMakeLists.txt
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@ -67,7 +67,15 @@ set_target_properties(${PROJECT_NAME} PROPERTIES
if(SystemC_FOUND) if(SystemC_FOUND)
add_library(${PROJECT_NAME}_sc src/sysc/core_complex.cpp) add_library(${PROJECT_NAME}_sc src/sysc/core_complex.cpp)
target_compile_definitions(${PROJECT_NAME}_sc PUBLIC WITH_SYSTEMC) target_compile_definitions(${PROJECT_NAME}_sc PUBLIC WITH_SYSTEMC)
target_compile_definitions(${PROJECT_NAME}_sc PRIVATE CORE_${CORE_NAME}) if(EXISTS ${CMAKE_CURRENT_SOURCE_DIR}/incl/iss/arch/tgc_b.h)
target_compile_definitions(${PROJECT_NAME}_sc PRIVATE CORE_TGC_B)
endif()
if(EXISTS ${CMAKE_CURRENT_SOURCE_DIR}/incl/iss/arch/tgc_c.h)
target_compile_definitions(${PROJECT_NAME}_sc PRIVATE CORE_TGC_C)
endif()
if(EXISTS ${CMAKE_CURRENT_SOURCE_DIR}/incl/iss/arch/tgc_d.h)
target_compile_definitions(${PROJECT_NAME}_sc PRIVATE CORE_TGC_D)
endif()
target_include_directories(${PROJECT_NAME}_sc PUBLIC ../incl ${SystemC_INCLUDE_DIRS} ${CCI_INCLUDE_DIRS}) target_include_directories(${PROJECT_NAME}_sc PUBLIC ../incl ${SystemC_INCLUDE_DIRS} ${CCI_INCLUDE_DIRS})
if(SCV_FOUND) if(SCV_FOUND)
@ -110,17 +118,3 @@ install(TARGETS dbt-core-tgc tgc-sim
PUBLIC_HEADER DESTINATION ${CMAKE_INSTALL_INCLUDEDIR}/${PROJECT_NAME} COMPONENT devel # headers for mac (note the different component -> different package) PUBLIC_HEADER DESTINATION ${CMAKE_INSTALL_INCLUDEDIR}/${PROJECT_NAME} COMPONENT devel # headers for mac (note the different component -> different package)
INCLUDES DESTINATION ${CMAKE_INSTALL_INCLUDEDIR} # headers INCLUDES DESTINATION ${CMAKE_INSTALL_INCLUDEDIR} # headers
) )
#
# SYSTEM PACKAGING (RPM, TGZ, ...)
# _____________________________________________________________________________
#include(CPackConfig)
#
# CMAKE PACKAGING (for other CMake projects to use this one easily)
# _____________________________________________________________________________
#include(PackageConfigurator)

235
incl/iss/arch/riscv_hart_common.h Normal file
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@ -0,0 +1,235 @@
/*******************************************************************************
* Copyright (C) 2017, 2018, 2021 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.
*
* Contributors:
* eyck@minres.com - initial implementation
******************************************************************************/
#ifndef _RISCV_HART_COMMON
#define _RISCV_HART_COMMON
#include "iss/arch_if.h"
#include <cstdint>
namespace iss {
namespace arch {
enum { tohost_dflt = 0xF0001000, fromhost_dflt = 0xF0001040 };
enum riscv_csr {
/* user-level CSR */
// User Trap Setup
ustatus = 0x000,
uie = 0x004,
utvec = 0x005,
// User Trap Handling
uscratch = 0x040,
uepc = 0x041,
ucause = 0x042,
utval = 0x043,
uip = 0x044,
// User Floating-Point CSRs
fflags = 0x001,
frm = 0x002,
fcsr = 0x003,
// User Counter/Timers
cycle = 0xC00,
time = 0xC01,
instret = 0xC02,
hpmcounter3 = 0xC03,
hpmcounter4 = 0xC04,
/*...*/
hpmcounter31 = 0xC1F,
cycleh = 0xC80,
timeh = 0xC81,
instreth = 0xC82,
hpmcounter3h = 0xC83,
hpmcounter4h = 0xC84,
/*...*/
hpmcounter31h = 0xC9F,
/* supervisor-level CSR */
// Supervisor Trap Setup
sstatus = 0x100,
sedeleg = 0x102,
sideleg = 0x103,
sie = 0x104,
stvec = 0x105,
scounteren = 0x106,
// Supervisor Trap Handling
sscratch = 0x140,
sepc = 0x141,
scause = 0x142,
stval = 0x143,
sip = 0x144,
// Supervisor Protection and Translation
satp = 0x180,
/* machine-level CSR */
// Machine Information Registers
mvendorid = 0xF11,
marchid = 0xF12,
mimpid = 0xF13,
mhartid = 0xF14,
// Machine Trap Setup
mstatus = 0x300,
misa = 0x301,
medeleg = 0x302,
mideleg = 0x303,
mie = 0x304,
mtvec = 0x305,
mcounteren = 0x306,
// Machine Trap Handling
mscratch = 0x340,
mepc = 0x341,
mcause = 0x342,
mtval = 0x343,
mip = 0x344,
// Physical Memory Protection
pmpcfg0 = 0x3A0,
pmpcfg1 = 0x3A1,
pmpcfg2 = 0x3A2,
pmpcfg3 = 0x3A3,
pmpaddr0 = 0x3B0,
pmpaddr1 = 0x3B1,
pmpaddr2 = 0x3B2,
pmpaddr3 = 0x3B3,
pmpaddr4 = 0x3B4,
pmpaddr5 = 0x3B5,
pmpaddr6 = 0x3B6,
pmpaddr7 = 0x3B7,
pmpaddr8 = 0x3B8,
pmpaddr9 = 0x3B9,
pmpaddr10 = 0x3BA,
pmpaddr11 = 0x3BB,
pmpaddr12 = 0x3BC,
pmpaddr13 = 0x3BD,
pmpaddr14 = 0x3BE,
pmpaddr15 = 0x3BF,
// Machine Counter/Timers
mcycle = 0xB00,
minstret = 0xB02,
mhpmcounter3 = 0xB03,
mhpmcounter4 = 0xB04,
/*...*/
mhpmcounter31 = 0xB1F,
mcycleh = 0xB80,
minstreth = 0xB82,
mhpmcounter3h = 0xB83,
mhpmcounter4h = 0xB84,
/*...*/
mhpmcounter31h = 0xB9F,
// Machine Counter Setup
mhpmevent3 = 0x323,
mhpmevent4 = 0x324,
/*...*/
mhpmevent31 = 0x33F,
// Debug/Trace Registers (shared with Debug Mode)
tselect = 0x7A0,
tdata1 = 0x7A1,
tdata2 = 0x7A2,
tdata3 = 0x7A3,
// Debug Mode Registers
dcsr = 0x7B0,
dpc = 0x7B1,
dscratch = 0x7B2
};
enum {
PGSHIFT = 12,
PTE_PPN_SHIFT = 10,
// page table entry (PTE) fields
PTE_V = 0x001, // Valid
PTE_R = 0x002, // Read
PTE_W = 0x004, // Write
PTE_X = 0x008, // Execute
PTE_U = 0x010, // User
PTE_G = 0x020, // Global
PTE_A = 0x040, // Accessed
PTE_D = 0x080, // Dirty
PTE_SOFT = 0x300 // Reserved for Software
};
template <typename T> inline bool PTE_TABLE(T PTE) { return (((PTE) & (PTE_V | PTE_R | PTE_W | PTE_X)) == PTE_V); }
enum { PRIV_U = 0, PRIV_S = 1, PRIV_M = 3 };
enum {
ISA_A = 1,
ISA_B = 1 << 1,
ISA_C = 1 << 2,
ISA_D = 1 << 3,
ISA_E = 1 << 4,
ISA_F = 1 << 5,
ISA_G = 1 << 6,
ISA_I = 1 << 8,
ISA_M = 1 << 12,
ISA_N = 1 << 13,
ISA_Q = 1 << 16,
ISA_S = 1 << 18,
ISA_U = 1 << 20
};
struct vm_info {
int levels;
int idxbits;
int ptesize;
uint64_t ptbase;
bool is_active() { return levels; }
};
class trap_load_access_fault : public trap_access {
public:
trap_load_access_fault(uint64_t badaddr)
: trap_access(5 << 16, badaddr) {}
};
class illegal_instruction_fault : public trap_access {
public:
illegal_instruction_fault(uint64_t badaddr)
: trap_access(2 << 16, badaddr) {}
};
class trap_instruction_page_fault : public trap_access {
public:
trap_instruction_page_fault(uint64_t badaddr)
: trap_access(12 << 16, badaddr) {}
};
class trap_load_page_fault : public trap_access {
public:
trap_load_page_fault(uint64_t badaddr)
: trap_access(13 << 16, badaddr) {}
};
class trap_store_page_fault : public trap_access {
public:
trap_store_page_fault(uint64_t badaddr)
: trap_access(15 << 16, badaddr) {}
};
}
}
#endif

218
incl/iss/arch/riscv_hart_m_p.h
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@ -1,5 +1,5 @@
/******************************************************************************* /*******************************************************************************
* Copyright (C) 2017, 2018, MINRES Technologies GmbH * Copyright (C) 2021, MINRES Technologies GmbH
* All rights reserved. * All rights reserved.
* *
* Redistribution and use in source and binary forms, with or without * Redistribution and use in source and binary forms, with or without
@ -32,11 +32,11 @@
* eyck@minres.com - initial implementation * eyck@minres.com - initial implementation
******************************************************************************/ ******************************************************************************/
#ifndef _RISCV_CORE_H_ #ifndef _RISCV_HART_M_P_H
#define _RISCV_CORE_H_ #define _RISCV_HART_M_P_H
#include "riscv_hart_common.h"
#include "iss/arch/traits.h" #include "iss/arch/traits.h"
#include "iss/arch_if.h"
#include "iss/instrumentation_if.h" #include "iss/instrumentation_if.h"
#include "iss/log_categories.h" #include "iss/log_categories.h"
#include "iss/vm_if.h" #include "iss/vm_if.h"
@ -66,185 +66,30 @@
namespace iss { namespace iss {
namespace arch { namespace arch {
enum { tohost_dflt = 0xF0001000, fromhost_dflt = 0xF0001040 };
enum riscv_csr {
/* user-level CSR */
// User Trap Setup
ustatus = 0x000,
uie = 0x004,
utvec = 0x005,
// User Trap Handling
uscratch = 0x040,
uepc = 0x041,
ucause = 0x042,
utval = 0x043,
uip = 0x044,
// User Floating-Point CSRs
fflags = 0x001,
frm = 0x002,
fcsr = 0x003,
// User Counter/Timers
cycle = 0xC00,
time = 0xC01,
instret = 0xC02,
hpmcounter3 = 0xC03,
hpmcounter4 = 0xC04,
/*...*/
hpmcounter31 = 0xC1F,
cycleh = 0xC80,
timeh = 0xC81,
instreth = 0xC82,
hpmcounter3h = 0xC83,
hpmcounter4h = 0xC84,
/*...*/
hpmcounter31h = 0xC9F,
/* supervisor-level CSR */
// Supervisor Trap Setup
sstatus = 0x100,
sedeleg = 0x102,
sideleg = 0x103,
sie = 0x104,
stvec = 0x105,
scounteren = 0x106,
// Supervisor Trap Handling
sscratch = 0x140,
sepc = 0x141,
scause = 0x142,
stval = 0x143,
sip = 0x144,
// Supervisor Protection and Translation
satp = 0x180,
/* machine-level CSR */
// Machine Information Registers
mvendorid = 0xF11,
marchid = 0xF12,
mimpid = 0xF13,
mhartid = 0xF14,
// Machine Trap Setup
mstatus = 0x300,
misa = 0x301,
medeleg = 0x302,
mideleg = 0x303,
mie = 0x304,
mtvec = 0x305,
mcounteren = 0x306,
// Machine Trap Handling
mscratch = 0x340,
mepc = 0x341,
mcause = 0x342,
mtval = 0x343,
mip = 0x344,
// Machine Protection and Translation
pmpcfg0 = 0x3A0,
pmpcfg1 = 0x3A1,
pmpcfg2 = 0x3A2,
pmpcfg3 = 0x3A3,
pmpaddr0 = 0x3B0,
pmpaddr1 = 0x3B1,
/*...*/
pmpaddr15 = 0x3BF,
// Machine Counter/Timers
mcycle = 0xB00,
minstret = 0xB02,
mhpmcounter3 = 0xB03,
mhpmcounter4 = 0xB04,
/*...*/
mhpmcounter31 = 0xB1F,
mcycleh = 0xB80,
minstreth = 0xB82,
mhpmcounter3h = 0xB83,
mhpmcounter4h = 0xB84,
/*...*/
mhpmcounter31h = 0xB9F,
// Machine Counter Setup
mhpmevent3 = 0x323,
mhpmevent4 = 0x324,
/*...*/
mhpmevent31 = 0x33F,
// Debug/Trace Registers (shared with Debug Mode)
tselect = 0x7A0,
tdata1 = 0x7A1,
tdata2 = 0x7A2,
tdata3 = 0x7A3,
// Debug Mode Registers
dcsr = 0x7B0,
dpc = 0x7B1,
dscratch = 0x7B2
};
namespace {
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,
PTE_PPN_SHIFT = 10,
// page table entry (PTE) fields
PTE_V = 0x001, // Valid
PTE_R = 0x002, // Read
PTE_W = 0x004, // Write
PTE_X = 0x008, // Execute
PTE_U = 0x010, // User
PTE_G = 0x020, // Global
PTE_A = 0x040, // Accessed
PTE_D = 0x080, // Dirty
PTE_SOFT = 0x300 // Reserved for Software
};
template <typename T> inline bool PTE_TABLE(T PTE) { return (((PTE) & (PTE_V | PTE_R | PTE_W | PTE_X)) == PTE_V); }
enum { PRIV_U = 0, PRIV_S = 1, PRIV_M = 3 };
enum {
ISA_A = 1,
ISA_B = 1 << 1,
ISA_C = 1 << 2,
ISA_D = 1 << 3,
ISA_E = 1 << 4,
ISA_F = 1 << 5,
ISA_G = 1 << 6,
ISA_I = 1 << 8,
ISA_M = 1 << 12,
ISA_N = 1 << 13,
ISA_Q = 1 << 16,
ISA_S = 1 << 18,
ISA_U = 1 << 20
};
class trap_load_access_fault : public trap_access {
public:
trap_load_access_fault(uint64_t badaddr)
: trap_access(5 << 16, badaddr) {}
};
class illegal_instruction_fault : public trap_access {
public:
illegal_instruction_fault(uint64_t badaddr)
: trap_access(2 << 16, badaddr) {}
};
} // namespace
template <typename BASE> class riscv_hart_m_p : public BASE { template <typename BASE> class riscv_hart_m_p : public BASE {
protected:
const std::array<const char, 4> lvl = {{'U', 'S', 'H', 'M'}};
const 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"}};
const 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"}};
public: public:
using super = BASE; using super = BASE;
using this_class = riscv_hart_m_p<BASE>; using this_class = riscv_hart_m_p<BASE>;
@ -313,6 +158,7 @@ public:
return 0x807ff9ddUL; // 0b1000 0000 0111 1111 1111 1001 1011 1011 // only machine mode is supported return 0x807ff9ddUL; // 0b1000 0000 0111 1111 1111 1001 1011 1011 // only machine mode is supported
} }
}; };
using hart_state_type = hart_state<reg_t>;
constexpr reg_t get_irq_mask() { constexpr reg_t get_irq_mask() {
return 0b101110111011; // only machine mode is supported return 0b101110111011; // only machine mode is supported
@ -387,7 +233,7 @@ protected:
virtual iss::status read_csr(unsigned addr, reg_t &val); virtual iss::status read_csr(unsigned addr, reg_t &val);
virtual iss::status write_csr(unsigned addr, reg_t val); virtual iss::status write_csr(unsigned addr, reg_t val);
hart_state<reg_t> state; hart_state_type state;
uint64_t cycle_offset; uint64_t cycle_offset;
reg_t fault_data; reg_t fault_data;
uint64_t tohost = tohost_dflt; uint64_t tohost = tohost_dflt;
@ -729,7 +575,7 @@ template <typename BASE> iss::status riscv_hart_m_p<BASE>::read_time(unsigned ad
} }
template <typename BASE> iss::status riscv_hart_m_p<BASE>::read_status(unsigned addr, reg_t &val) { template <typename BASE> iss::status riscv_hart_m_p<BASE>::read_status(unsigned addr, reg_t &val) {
val = state.mstatus & hart_state<reg_t>::get_mask(); val = state.mstatus & hart_state_type::get_mask();
return iss::Ok; return iss::Ok;
} }
@ -876,7 +722,7 @@ iss::status riscv_hart_m_p<BASE>::write_mem(phys_addr_t paddr, unsigned length,
template <typename BASE> inline void riscv_hart_m_p<BASE>::reset(uint64_t address) { template <typename BASE> inline void riscv_hart_m_p<BASE>::reset(uint64_t address) {
BASE::reset(address); BASE::reset(address);
state.mstatus = hart_state<reg_t>::mstatus_reset_val; state.mstatus = hart_state_type::mstatus_reset_val;
} }
template <typename BASE> void riscv_hart_m_p<BASE>::check_interrupt() { template <typename BASE> void riscv_hart_m_p<BASE>::check_interrupt() {
@ -958,4 +804,4 @@ template <typename BASE> uint64_t riscv_hart_m_p<BASE>::leave_trap(uint64_t flag
} // namespace arch } // namespace arch
} // namespace iss } // namespace iss
#endif /* _RISCV_CORE_H_ */ #endif /* _RISCV_HART_M_P_H */

1199
incl/iss/arch/riscv_hart_msu_vp.h Normal file
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427
incl/iss/arch/riscv_hart_mu_p.h
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@ -1,5 +1,5 @@
/******************************************************************************* /*******************************************************************************
* Copyright (C) 2017, 2018, MINRES Technologies GmbH * Copyright (C) 2021 MINRES Technologies GmbH
* All rights reserved. * All rights reserved.
* *
* Redistribution and use in source and binary forms, with or without * Redistribution and use in source and binary forms, with or without
@ -32,11 +32,11 @@
* eyck@minres.com - initial implementation * eyck@minres.com - initial implementation
******************************************************************************/ ******************************************************************************/
#ifndef _RISCV_CORE_H_ #ifndef _RISCV_HART_MU_P_H
#define _RISCV_CORE_H_ #define _RISCV_HART_MU_P_H
#include "riscv_hart_common.h"
#include "iss/arch/traits.h" #include "iss/arch/traits.h"
#include "iss/arch_if.h"
#include "iss/instrumentation_if.h" #include "iss/instrumentation_if.h"
#include "iss/log_categories.h" #include "iss/log_categories.h"
#include "iss/vm_if.h" #include "iss/vm_if.h"
@ -66,188 +66,33 @@
namespace iss { namespace iss {
namespace arch { namespace arch {
enum { tohost_dflt = 0xF0001000, fromhost_dflt = 0xF0001040 }; template <typename BASE, bool PMP=false> class riscv_hart_mu_p : public BASE {
protected:
enum riscv_csr { const std::array<const char, 4> lvl = {{'U', 'S', 'H', 'M'}};
/* user-level CSR */ const std::array<const char *, 16> trap_str = {{""
// User Trap Setup "Instruction address misaligned", // 0
ustatus = 0x000, "Instruction access fault", // 1
uie = 0x004, "Illegal instruction", // 2
utvec = 0x005, "Breakpoint", // 3
// User Trap Handling "Load address misaligned", // 4
uscratch = 0x040, "Load access fault", // 5
uepc = 0x041, "Store/AMO address misaligned", // 6
ucause = 0x042, "Store/AMO access fault", // 7
utval = 0x043, "Environment call from U-mode", // 8
uip = 0x044, "Environment call from S-mode", // 9
// User Floating-Point CSRs "Reserved", // a
fflags = 0x001, "Environment call from M-mode", // b
frm = 0x002, "Instruction page fault", // c
fcsr = 0x003, "Load page fault", // d
// User Counter/Timers "Reserved", // e
cycle = 0xC00, "Store/AMO page fault"}};
time = 0xC01, const std::array<const char *, 12> irq_str = {
instret = 0xC02, {"User software interrupt", "Supervisor software interrupt", "Reserved", "Machine software interrupt",
hpmcounter3 = 0xC03, "User timer interrupt", "Supervisor timer interrupt", "Reserved", "Machine timer interrupt",
hpmcounter4 = 0xC04, "User external interrupt", "Supervisor external interrupt", "Reserved", "Machine external interrupt"}};
/*...*/
hpmcounter31 = 0xC1F,
cycleh = 0xC80,
timeh = 0xC81,
instreth = 0xC82,
hpmcounter3h = 0xC83,
hpmcounter4h = 0xC84,
/*...*/
hpmcounter31h = 0xC9F,
/* supervisor-level CSR */
// Supervisor Trap Setup
sstatus = 0x100,
sedeleg = 0x102,
sideleg = 0x103,
sie = 0x104,
stvec = 0x105,
scounteren = 0x106,
// Supervisor Trap Handling
sscratch = 0x140,
sepc = 0x141,
scause = 0x142,
stval = 0x143,
sip = 0x144,
// Supervisor Protection and Translation
satp = 0x180,
/* machine-level CSR */
// Machine Information Registers
mvendorid = 0xF11,
marchid = 0xF12,
mimpid = 0xF13,
mhartid = 0xF14,
// Machine Trap Setup
mstatus = 0x300,
misa = 0x301,
medeleg = 0x302,
mideleg = 0x303,
mie = 0x304,
mtvec = 0x305,
mcounteren = 0x306,
// Machine Trap Handling
mscratch = 0x340,
mepc = 0x341,
mcause = 0x342,
mtval = 0x343,
mip = 0x344,
// Machine Protection and Translation
pmpcfg0 = 0x3A0,
pmpcfg1 = 0x3A1,
pmpcfg2 = 0x3A2,
pmpcfg3 = 0x3A3,
pmpaddr0 = 0x3B0,
pmpaddr1 = 0x3B1,
/*...*/
pmpaddr15 = 0x3BF,
// Machine Counter/Timers
mcycle = 0xB00,
minstret = 0xB02,
mhpmcounter3 = 0xB03,
mhpmcounter4 = 0xB04,
/*...*/
mhpmcounter31 = 0xB1F,
mcycleh = 0xB80,
minstreth = 0xB82,
mhpmcounter3h = 0xB83,
mhpmcounter4h = 0xB84,
/*...*/
mhpmcounter31h = 0xB9F,
// Machine Counter Setup
mhpmevent3 = 0x323,
mhpmevent4 = 0x324,
/*...*/
mhpmevent31 = 0x33F,
// Debug/Trace Registers (shared with Debug Mode)
tselect = 0x7A0,
tdata1 = 0x7A1,
tdata2 = 0x7A2,
tdata3 = 0x7A3,
// Debug Mode Registers
dcsr = 0x7B0,
dpc = 0x7B1,
dscratch = 0x7B2
};
namespace {
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,
PTE_PPN_SHIFT = 10,
// page table entry (PTE) fields
PTE_V = 0x001, // Valid
PTE_R = 0x002, // Read
PTE_W = 0x004, // Write
PTE_X = 0x008, // Execute
PTE_U = 0x010, // User
PTE_G = 0x020, // Global
PTE_A = 0x040, // Accessed
PTE_D = 0x080, // Dirty
PTE_SOFT = 0x300 // Reserved for Software
};
template <typename T> inline bool PTE_TABLE(T PTE) { return (((PTE) & (PTE_V | PTE_R | PTE_W | PTE_X)) == PTE_V); }
enum { PRIV_U = 0, PRIV_S = 1, PRIV_M = 3 };
enum {
ISA_A = 1,
ISA_B = 1 << 1,
ISA_C = 1 << 2,
ISA_D = 1 << 3,
ISA_E = 1 << 4,
ISA_F = 1 << 5,
ISA_G = 1 << 6,
ISA_I = 1 << 8,
ISA_M = 1 << 12,
ISA_N = 1 << 13,
ISA_Q = 1 << 16,
ISA_S = 1 << 18,
ISA_U = 1 << 20
};
class trap_load_access_fault : public trap_access {
public:
trap_load_access_fault(uint64_t badaddr)
: trap_access(5 << 16, badaddr) {}
};
class illegal_instruction_fault : public trap_access {
public:
illegal_instruction_fault(uint64_t badaddr)
: trap_access(2 << 16, badaddr) {}
};
} // namespace
template <typename BASE> class riscv_hart_mu_p : public BASE {
public: public:
using super = BASE; using super = BASE;
using this_class = riscv_hart_mu_p<BASE>; using this_class = riscv_hart_mu_p<BASE, PMP>;
using phys_addr_t = typename super::phys_addr_t; using phys_addr_t = typename super::phys_addr_t;
using reg_t = typename super::reg_t; using reg_t = typename super::reg_t;
using addr_t = typename super::addr_t; using addr_t = typename super::addr_t;
@ -301,21 +146,35 @@ public:
static const reg_t mstatus_reset_val = 0; static const reg_t mstatus_reset_val = 0;
void write_mstatus(T val) { void write_mstatus(T val, unsigned priv_lvl) {
auto mask = get_mask(); auto mask = get_mask(priv_lvl);
auto new_val = (mstatus.backing.val & ~mask) | (val & mask); auto new_val = (mstatus.backing.val & ~mask) | (val & mask);
mstatus = new_val; mstatus = new_val;
} }
T satp; T satp;
static constexpr uint32_t get_mask() { static constexpr uint32_t get_mask(unsigned priv_lvl) {
return 0x807ff9ddUL; // 0b1000 0000 0111 1111 1111 1001 1011 1011 // only machine mode is supported #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
default: return 0x807ff9ddUL; // 0b1000 0000 0111 1111 1111 1001 1011 1011
}
#endif
} }
}; };
using hart_state_type = hart_state<reg_t>;
constexpr reg_t get_irq_mask() { constexpr reg_t get_irq_mask(size_t mode) {
return 0b101110111011; // only machine mode is supported std::array<const reg_t, 4> m = {{
0b000100010001, // U mode
0b001100110011, // S mode
0,
0b101110111011 // M mode
}};
return m[mode];
} }
riscv_hart_mu_p(); riscv_hart_mu_p();
@ -338,8 +197,8 @@ public:
void set_mhartid(reg_t mhartid) { mhartid_reg = mhartid; }; void set_mhartid(reg_t mhartid) { mhartid_reg = mhartid; };
void disass_output(uint64_t pc, const std::string instr) override { void disass_output(uint64_t pc, const std::string instr) override {
CLOG(INFO, disass) << fmt::format("0x{:016x} {:40} [s:0x{:x};c:{}]", CLOG(INFO, disass) << fmt::format("0x{:016x} {:40} [p:{};s:0x{:x};c:{}]",
pc, instr, (reg_t)state.mstatus, this->reg.icount); pc, instr, lvl[this->reg.PRIV], (reg_t)state.mstatus, this->reg.icount);
}; };
iss::instrumentation_if *get_instrumentation_if() override { return &instr_if; } iss::instrumentation_if *get_instrumentation_if() override { return &instr_if; }
@ -359,7 +218,7 @@ public:
protected: protected:
struct riscv_instrumentation_if : public iss::instrumentation_if { struct riscv_instrumentation_if : public iss::instrumentation_if {
riscv_instrumentation_if(riscv_hart_mu_p<BASE> &arch) riscv_instrumentation_if(riscv_hart_mu_p<BASE, PMP> &arch)
: arch(arch) {} : arch(arch) {}
/** /**
* get the name of this architecture * get the name of this architecture
@ -374,7 +233,7 @@ protected:
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_mu_p<BASE> &arch; riscv_hart_mu_p<BASE, PMP> &arch;
}; };
friend struct riscv_instrumentation_if; friend struct riscv_instrumentation_if;
@ -387,7 +246,7 @@ protected:
virtual iss::status read_csr(unsigned addr, reg_t &val); virtual iss::status read_csr(unsigned addr, reg_t &val);
virtual iss::status write_csr(unsigned addr, reg_t val); virtual iss::status write_csr(unsigned addr, reg_t val);
hart_state<reg_t> state; hart_state_type state;
uint64_t cycle_offset; uint64_t cycle_offset;
reg_t fault_data; reg_t fault_data;
uint64_t tohost = tohost_dflt; uint64_t tohost = tohost_dflt;
@ -427,8 +286,8 @@ protected:
void check_interrupt(); void check_interrupt();
}; };
template <typename BASE> template <typename BASE, bool PMP>
riscv_hart_mu_p<BASE>::riscv_hart_mu_p() riscv_hart_mu_p<BASE, PMP>::riscv_hart_mu_p()
: state() : state()
, cycle_offset(0) , cycle_offset(0)
, instr_if(*this) { , instr_if(*this) {
@ -437,33 +296,39 @@ riscv_hart_mu_p<BASE>::riscv_hart_mu_p()
for (unsigned addr = mcycle; addr <= hpmcounter31; ++addr) csr_wr_cb[addr] = nullptr; for (unsigned addr = mcycle; addr <= hpmcounter31; ++addr) csr_wr_cb[addr] = nullptr;
for (unsigned addr = mcycleh; addr <= hpmcounter31h; ++addr) csr_wr_cb[addr] = nullptr; for (unsigned addr = mcycleh; addr <= hpmcounter31h; ++addr) csr_wr_cb[addr] = nullptr;
// special handling // special handling
csr_rd_cb[time] = &riscv_hart_mu_p<BASE>::read_time; csr_rd_cb[time] = &this_class::read_time;
csr_wr_cb[time] = nullptr; csr_wr_cb[time] = nullptr;
csr_rd_cb[timeh] = &riscv_hart_mu_p<BASE>::read_time; csr_rd_cb[timeh] = &this_class::read_time;
csr_wr_cb[timeh] = nullptr; csr_wr_cb[timeh] = nullptr;
csr_rd_cb[mcycle] = &riscv_hart_mu_p<BASE>::read_cycle; csr_rd_cb[mcycle] = &this_class::read_cycle;
csr_rd_cb[mcycleh] = &riscv_hart_mu_p<BASE>::read_cycle; csr_rd_cb[mcycleh] = &this_class::read_cycle;
csr_rd_cb[minstret] = &riscv_hart_mu_p<BASE>::read_cycle; csr_rd_cb[minstret] = &this_class::read_cycle;
csr_rd_cb[minstreth] = &riscv_hart_mu_p<BASE>::read_cycle; csr_rd_cb[minstreth] = &this_class::read_cycle;
csr_rd_cb[mstatus] = &riscv_hart_mu_p<BASE>::read_status; csr_rd_cb[mstatus] = &this_class::read_status;
csr_wr_cb[mstatus] = &riscv_hart_mu_p<BASE>::write_status; csr_wr_cb[mstatus] = &this_class::write_status;
csr_rd_cb[mip] = &riscv_hart_mu_p<BASE>::read_ip; csr_rd_cb[ustatus] = &this_class::read_status;
csr_wr_cb[mip] = &riscv_hart_mu_p<BASE>::write_ip; csr_wr_cb[ustatus] = &this_class::write_status;
csr_rd_cb[mie] = &riscv_hart_mu_p<BASE>::read_ie; csr_rd_cb[mip] = &this_class::read_ip;
csr_wr_cb[mie] = &riscv_hart_mu_p<BASE>::write_ie; csr_wr_cb[mip] = &this_class::write_ip;
csr_rd_cb[mhartid] = &riscv_hart_mu_p<BASE>::read_hartid; csr_rd_cb[uip] = &this_class::read_ip;
csr_wr_cb[uip] = &this_class::write_ip;
csr_rd_cb[mie] = &this_class::read_ie;
csr_wr_cb[mie] = &this_class::write_ie;
csr_rd_cb[uie] = &this_class::read_ie;
csr_wr_cb[uie] = &this_class::write_ie;
csr_rd_cb[mhartid] = &this_class::read_hartid;
// common regs // common regs
const std::array<unsigned, 6> addrs{{mepc, mtvec, mscratch, mcause, mtval, mscratch}}; const std::array<unsigned, 6> addrs{{mepc, mtvec, mscratch, mcause, mtval, mscratch}};
for(auto addr: addrs) { for(auto addr: addrs) {
csr_rd_cb[addr] = &riscv_hart_mu_p<BASE>::read_reg; csr_rd_cb[addr] = &this_class::read_reg;
csr_wr_cb[addr] = &riscv_hart_mu_p<BASE>::write_reg; csr_wr_cb[addr] = &this_class::write_reg;
} }
// read-only registers // read-only registers
csr_rd_cb[misa] = &riscv_hart_mu_p<BASE>::read_reg; csr_rd_cb[misa] = &this_class::read_reg;
csr_wr_cb[misa] = nullptr; csr_wr_cb[misa] = nullptr;
} }
template <typename BASE> std::pair<uint64_t, bool> riscv_hart_mu_p<BASE>::load_file(std::string name, int type) { template <typename BASE, bool PMP> std::pair<uint64_t, bool> riscv_hart_mu_p<BASE, PMP>::load_file(std::string name, int type) {
FILE *fp = fopen(name.c_str(), "r"); FILE *fp = fopen(name.c_str(), "r");
if (fp) { if (fp) {
std::array<char, 5> buf; std::array<char, 5> buf;
@ -507,8 +372,8 @@ template <typename BASE> std::pair<uint64_t, bool> riscv_hart_mu_p<BASE>::load_f
throw std::runtime_error("memory load file not found"); throw std::runtime_error("memory load file not found");
} }
template <typename BASE> template <typename BASE, bool PMP>
iss::status riscv_hart_mu_p<BASE>::read(const address_type type, const access_type access, const uint32_t space, iss::status riscv_hart_mu_p<BASE, PMP>::read(const address_type type, const access_type access, const uint32_t space,
const uint64_t addr, const unsigned length, uint8_t *const data) { const uint64_t addr, const unsigned length, uint8_t *const data) {
#ifndef NDEBUG #ifndef NDEBUG
if (access && iss::access_type::DEBUG) { if (access && iss::access_type::DEBUG) {
@ -565,8 +430,8 @@ iss::status riscv_hart_mu_p<BASE>::read(const address_type type, const access_ty
} }
} }
template <typename BASE> template <typename BASE, bool PMP>
iss::status riscv_hart_mu_p<BASE>::write(const address_type type, const access_type access, const uint32_t space, iss::status riscv_hart_mu_p<BASE, PMP>::write(const address_type type, const access_type access, const uint32_t space,
const uint64_t addr, const unsigned length, const uint8_t *const data) { const uint64_t addr, const unsigned length, const uint8_t *const data) {
#ifndef NDEBUG #ifndef NDEBUG
const char *prefix = (access && iss::access_type::DEBUG) ? "debug " : ""; const char *prefix = (access && iss::access_type::DEBUG) ? "debug " : "";
@ -672,7 +537,7 @@ iss::status riscv_hart_mu_p<BASE>::write(const address_type type, const access_t
} }
} }
template <typename BASE> iss::status riscv_hart_mu_p<BASE>::read_csr(unsigned addr, reg_t &val) { template <typename BASE, bool PMP> iss::status riscv_hart_mu_p<BASE, PMP>::read_csr(unsigned addr, reg_t &val) {
if (addr >= csr.size()) return iss::Err; if (addr >= csr.size()) return iss::Err;
auto req_priv_lvl = (addr >> 8) & 0x3; auto req_priv_lvl = (addr >> 8) & 0x3;
if (this->reg.PRIV < req_priv_lvl) // not having required privileges if (this->reg.PRIV < req_priv_lvl) // not having required privileges
@ -683,7 +548,7 @@ template <typename BASE> iss::status riscv_hart_mu_p<BASE>::read_csr(unsigned ad
return (this->*(it->second))(addr, val); return (this->*(it->second))(addr, val);
} }
template <typename BASE> iss::status riscv_hart_mu_p<BASE>::write_csr(unsigned addr, reg_t val) { template <typename BASE, bool PMP> iss::status riscv_hart_mu_p<BASE, PMP>::write_csr(unsigned addr, reg_t val) {
if (addr >= csr.size()) return iss::Err; if (addr >= csr.size()) return iss::Err;
auto req_priv_lvl = (addr >> 8) & 0x3; auto req_priv_lvl = (addr >> 8) & 0x3;
if (this->reg.PRIV < req_priv_lvl) // not having required privileges if (this->reg.PRIV < req_priv_lvl) // not having required privileges
@ -696,17 +561,17 @@ template <typename BASE> iss::status riscv_hart_mu_p<BASE>::write_csr(unsigned a
return (this->*(it->second))(addr, val); return (this->*(it->second))(addr, val);
} }
template <typename BASE> iss::status riscv_hart_mu_p<BASE>::read_reg(unsigned addr, reg_t &val) { template <typename BASE, bool PMP> iss::status riscv_hart_mu_p<BASE, PMP>::read_reg(unsigned addr, reg_t &val) {
val = csr[addr]; val = csr[addr];
return iss::Ok; return iss::Ok;
} }
template <typename BASE> iss::status riscv_hart_mu_p<BASE>::write_reg(unsigned addr, reg_t val) { template <typename BASE, bool PMP> iss::status riscv_hart_mu_p<BASE, PMP>::write_reg(unsigned addr, reg_t val) {
csr[addr] = val; csr[addr] = val;
return iss::Ok; return iss::Ok;
} }
template <typename BASE> iss::status riscv_hart_mu_p<BASE>::read_cycle(unsigned addr, reg_t &val) { template <typename BASE, bool PMP> iss::status riscv_hart_mu_p<BASE, PMP>::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) { if (addr == mcycle) {
val = static_cast<reg_t>(cycle_val); val = static_cast<reg_t>(cycle_val);
@ -717,7 +582,7 @@ template <typename BASE> iss::status riscv_hart_mu_p<BASE>::read_cycle(unsigned
return iss::Ok; return iss::Ok;
} }
template <typename BASE> iss::status riscv_hart_mu_p<BASE>::read_time(unsigned addr, reg_t &val) { template <typename BASE, bool PMP> iss::status riscv_hart_mu_p<BASE, PMP>::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) { if (addr == time) {
val = static_cast<reg_t>(time_val); val = static_cast<reg_t>(time_val);
@ -728,51 +593,55 @@ template <typename BASE> iss::status riscv_hart_mu_p<BASE>::read_time(unsigned a
return iss::Ok; return iss::Ok;
} }
template <typename BASE> iss::status riscv_hart_mu_p<BASE>::read_status(unsigned addr, reg_t &val) { template <typename BASE, bool PMP> iss::status riscv_hart_mu_p<BASE, PMP>::read_status(unsigned addr, reg_t &val) {
val = state.mstatus & hart_state<reg_t>::get_mask(); auto req_priv_lvl = (addr >> 8) & 0x3;
val = state.mstatus & hart_state_type::get_mask(req_priv_lvl);
return iss::Ok; return iss::Ok;
} }
template <typename BASE> iss::status riscv_hart_mu_p<BASE>::write_status(unsigned addr, reg_t val) { template <typename BASE, bool PMP> iss::status riscv_hart_mu_p<BASE, PMP>::write_status(unsigned addr, reg_t val) {
state.write_mstatus(val); auto req_priv_lvl = (addr >> 8) & 0x3;
state.write_mstatus(val, req_priv_lvl);
check_interrupt(); check_interrupt();
return iss::Ok; return iss::Ok;
} }
template <typename BASE> iss::status riscv_hart_mu_p<BASE>::read_ie(unsigned addr, reg_t &val) { template <typename BASE, bool PMP> iss::status riscv_hart_mu_p<BASE, PMP>::read_ie(unsigned addr, reg_t &val) {
val = csr[mie]; val = csr[mie];
val &= csr[mideleg]; val &= csr[mideleg];
return iss::Ok; return iss::Ok;
} }
template <typename BASE> iss::status riscv_hart_mu_p<BASE>::read_hartid(unsigned addr, reg_t &val) { template <typename BASE, bool PMP> iss::status riscv_hart_mu_p<BASE, PMP>::read_hartid(unsigned addr, reg_t &val) {
val = mhartid_reg; val = mhartid_reg;
return iss::Ok; return iss::Ok;
} }
template <typename BASE> iss::status riscv_hart_mu_p<BASE>::write_ie(unsigned addr, reg_t val) { template <typename BASE, bool PMP> iss::status riscv_hart_mu_p<BASE, PMP>::write_ie(unsigned addr, reg_t val) {
auto mask = get_irq_mask(); auto req_priv_lvl = (addr >> 8) & 0x3;
auto mask = get_irq_mask(req_priv_lvl);
csr[mie] = (csr[mie] & ~mask) | (val & mask); csr[mie] = (csr[mie] & ~mask) | (val & mask);
check_interrupt(); check_interrupt();
return iss::Ok; return iss::Ok;
} }
template <typename BASE> iss::status riscv_hart_mu_p<BASE>::read_ip(unsigned addr, reg_t &val) { template <typename BASE, bool PMP> iss::status riscv_hart_mu_p<BASE, PMP>::read_ip(unsigned addr, reg_t &val) {
val = csr[mip]; val = csr[mip];
val &= csr[mideleg]; val &= csr[mideleg];
return iss::Ok; return iss::Ok;
} }
template <typename BASE> iss::status riscv_hart_mu_p<BASE>::write_ip(unsigned addr, reg_t val) { template <typename BASE, bool PMP> iss::status riscv_hart_mu_p<BASE, PMP>::write_ip(unsigned addr, reg_t val) {
auto mask = get_irq_mask(); auto req_priv_lvl = (addr >> 8) & 0x3;
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); csr[mip] = (csr[mip] & ~mask) | (val & mask);
check_interrupt(); check_interrupt();
return iss::Ok; return iss::Ok;
} }
template <typename BASE> template <typename BASE, bool PMP>
iss::status riscv_hart_mu_p<BASE>::read_mem(phys_addr_t paddr, unsigned length, uint8_t *const data) { iss::status riscv_hart_mu_p<BASE, PMP>::read_mem(phys_addr_t paddr, unsigned length, uint8_t *const data) {
if ((paddr.val + length) > mem.size()) return iss::Err; if ((paddr.val + length) > mem.size()) return iss::Err;
if(mem_read_cb) return mem_read_cb(paddr, length, data); if(mem_read_cb) return mem_read_cb(paddr, length, data);
switch (paddr.val) { switch (paddr.val) {
@ -797,8 +666,8 @@ iss::status riscv_hart_mu_p<BASE>::read_mem(phys_addr_t paddr, unsigned length,
return iss::Ok; return iss::Ok;
} }
template <typename BASE> template <typename BASE, bool PMP>
iss::status riscv_hart_mu_p<BASE>::write_mem(phys_addr_t paddr, unsigned length, const uint8_t *const data) { iss::status riscv_hart_mu_p<BASE, PMP>::write_mem(phys_addr_t paddr, unsigned length, const uint8_t *const data) {
if ((paddr.val + length) > mem.size()) return iss::Err; if ((paddr.val + length) > mem.size()) return iss::Err;
if(mem_write_cb) return mem_write_cb(paddr, length, data); if(mem_write_cb) return mem_write_cb(paddr, length, data);
switch (paddr.val) { switch (paddr.val) {
@ -874,12 +743,12 @@ iss::status riscv_hart_mu_p<BASE>::write_mem(phys_addr_t paddr, unsigned length,
return iss::Ok; return iss::Ok;
} }
template <typename BASE> inline void riscv_hart_mu_p<BASE>::reset(uint64_t address) { template <typename BASE, bool PMP> inline void riscv_hart_mu_p<BASE, PMP>::reset(uint64_t address) {
BASE::reset(address); BASE::reset(address);
state.mstatus = hart_state<reg_t>::mstatus_reset_val; state.mstatus = hart_state_type::mstatus_reset_val;
} }
template <typename BASE> void riscv_hart_mu_p<BASE>::check_interrupt() { template <typename BASE, bool PMP> void riscv_hart_mu_p<BASE, PMP>::check_interrupt() {
auto ideleg = csr[mideleg]; auto ideleg = csr[mideleg];
// Multiple simultaneous interrupts and traps at the same privilege level are // Multiple simultaneous interrupts and traps at the same privilege level are
// handled in the following decreasing priority order: // handled in the following decreasing priority order:
@ -901,23 +770,36 @@ template <typename BASE> void riscv_hart_mu_p<BASE>::check_interrupt() {
} }
} }
template <typename BASE> uint64_t riscv_hart_mu_p<BASE>::enter_trap(uint64_t flags, uint64_t addr) { template <typename BASE, bool PMP> uint64_t riscv_hart_mu_p<BASE, PMP>::enter_trap(uint64_t flags, uint64_t addr) {
// flags are ACTIVE[31:31], CAUSE[30:16], TRAPID[15:0] // flags are ACTIVE[31:31], CAUSE[30:16], TRAPID[15:0]
// calculate and write mcause val // calculate and write mcause val
auto trap_id = bit_sub<0, 16>(flags); auto trap_id = bit_sub<0, 16>(flags);
auto cause = bit_sub<16, 15>(flags); auto cause = bit_sub<16, 15>(flags);
if (trap_id == 0 && cause == 11) cause = 0x8 + PRIV_M; // adjust environment call cause if (trap_id == 0 && cause == 11) cause = 0x8 + this->reg.PRIV; // adjust environment call cause
// calculate effective privilege level // calculate effective privilege level
auto new_priv = PRIV_M;
if (trap_id == 0) { // exception if (trap_id == 0) { // exception
if (this->reg.PRIV != PRIV_M && ((csr[medeleg] >> cause) & 0x1) != 0)
new_priv = PRIV_U;
// store ret addr in xepc register // store ret addr in xepc register
csr[mepc] = static_cast<reg_t>(addr); // store actual address instruction of exception csr[uepc | (new_priv << 8)] = static_cast<reg_t>(addr); // store actual address instruction of exception
csr[mtval] = fault_data; /*
* write mtval if new_priv=M_MODE, spec says:
* When a hardware breakpoint is triggered, or an instruction-fetch, load,
* or store address-misaligned,
* access, or page-fault exception occurs, mtval is written with the
* faulting effective address.
*/
csr[utval | (new_priv << 8)] = fault_data;
fault_data = 0; fault_data = 0;
} else { } else {
csr[mepc] = this->reg.NEXT_PC; // store next address if interrupt if (this->reg.PRIV != PRIV_M && ((csr[mideleg] >> cause) & 0x1) != 0)
new_priv = PRIV_U;
csr[uepc | (new_priv << 8)] = this->reg.NEXT_PC; // store next address if interrupt
this->reg.pending_trap = 0; this->reg.pending_trap = 0;
} }
csr[mcause] = (trap_id << 31) + cause; size_t adr = ucause | (new_priv << 8);
csr[adr] = (trap_id << 31) + cause;
// update mstatus // update mstatus
// xPP field of mstatus is written with the active privilege mode at the time // xPP field of mstatus is written with the active privilege mode at the time
// of the trap; the x PIE field of mstatus // of the trap; the x PIE field of mstatus
@ -925,37 +807,64 @@ template <typename BASE> uint64_t riscv_hart_mu_p<BASE>::enter_trap(uint64_t fla
// the trap; and the x IE field of mstatus // the trap; and the x IE field of mstatus
// is cleared // is cleared
// store the actual privilege level in yPP and store interrupt enable flags // store the actual privilege level in yPP and store interrupt enable flags
state.mstatus.MPP = PRIV_M; switch (new_priv) {
state.mstatus.MPIE = state.mstatus.MIE; case PRIV_M:
state.mstatus.MIE = false; state.mstatus.MPP = this->reg.PRIV;
state.mstatus.MPIE = state.mstatus.MIE;
state.mstatus.MIE = false;
break;
case PRIV_U:
state.mstatus.UPIE = state.mstatus.UIE;
state.mstatus.UIE = false;
break;
default:
break;
}
// get trap vector // get trap vector
auto ivec = csr[mtvec]; auto ivec = csr[utvec | (new_priv << 8)];
// calculate addr// set NEXT_PC to trap addressess to jump to based on MODE // calculate addr// set NEXT_PC to trap addressess to jump to based on MODE
// bits in mtvec // bits in mtvec
this->reg.NEXT_PC = ivec & ~0x1UL; this->reg.NEXT_PC = ivec & ~0x1UL;
if ((ivec & 0x1) == 1 && trap_id != 0) this->reg.NEXT_PC += 4 * cause; if ((ivec & 0x1) == 1 && trap_id != 0) this->reg.NEXT_PC += 4 * cause;
// reset trap state // reset trap state
this->reg.PRIV = PRIV_M; this->reg.PRIV = new_priv;
this->reg.trap_state = 0; this->reg.trap_state = 0;
std::array<char, 32> buffer; std::array<char, 32> buffer;
sprintf(buffer.data(), "0x%016lx", addr); sprintf(buffer.data(), "0x%016lx", addr);
if((flags&0xffffffff) != 0xffffffff) if((flags&0xffffffff) != 0xffffffff)
CLOG(INFO, disass) << (trap_id ? "Interrupt" : "Trap") << " with cause '" CLOG(INFO, disass) << (trap_id ? "Interrupt" : "Trap") << " with cause '"
<< (trap_id ? irq_str[cause] : trap_str[cause]) << "' (" << cause << ")" << (trap_id ? irq_str[cause] : trap_str[cause]) << "' (" << cause << ")"
<< " at address " << buffer.data() << " occurred"; << " at address " << buffer.data() << " occurred, changing privilege level from "
<< lvl[this->reg.PRIV] << " to " << lvl[new_priv];
return this->reg.NEXT_PC; return this->reg.NEXT_PC;
} }
template <typename BASE> uint64_t riscv_hart_mu_p<BASE>::leave_trap(uint64_t flags) { template <typename BASE, bool PMP> uint64_t riscv_hart_mu_p<BASE, PMP>::leave_trap(uint64_t flags) {
state.mstatus.MIE = state.mstatus.MPIE; auto inst_priv = (flags & 0x3)? 3:0;
auto status = state.mstatus;
// pop the relevant lower-privilege interrupt enable and privilege mode stack
// clear respective yIE
switch (inst_priv) {
case PRIV_M:
this->reg.PRIV = state.mstatus.MPP;
state.mstatus.MPP = 0; // clear mpp to U mode
state.mstatus.MIE = state.mstatus.MPIE;
break;
case PRIV_U:
this->reg.PRIV = 0;
state.mstatus.UIE = state.mstatus.UPIE;
break;
}
// sets the pc to the value stored in the x epc register. // sets the pc to the value stored in the x epc register.
this->reg.NEXT_PC = csr[mepc]; this->reg.NEXT_PC = csr[uepc | inst_priv << 8];
CLOG(INFO, disass) << "Executing xRET"; CLOG(INFO, disass) << "Executing xRET , changing privilege level from " << lvl[this->reg.PRIV] << " to "
<< lvl[this->reg.PRIV];
return this->reg.NEXT_PC; return this->reg.NEXT_PC;
} }
} // namespace arch } // namespace arch
} // namespace iss } // namespace iss
#endif /* _RISCV_CORE_H_ */ #endif /* _RISCV_HART_MU_P_H */

14
incl/sysc/core_complex.h
View File

@ -48,16 +48,6 @@ class scv_tr_stream;
struct _scv_tr_generator_default_data; struct _scv_tr_generator_default_data;
template <class T_begin, class T_end> class scv_tr_generator; template <class T_begin, class T_end> class scv_tr_generator;
namespace iss {
class vm_if;
namespace arch {
template <typename BASE> class riscv_hart_m_p;
}
namespace debugger {
class target_adapter_if;
}
} // namespace iss
namespace sysc { namespace sysc {
class tlm_dmi_ext : public tlm::tlm_dmi { class tlm_dmi_ext : public tlm::tlm_dmi {
@ -97,6 +87,8 @@ public:
cci::cci_param<uint64_t> reset_address{"reset_address", 0ULL}; cci::cci_param<uint64_t> reset_address{"reset_address", 0ULL};
cci::cci_param<std::string> core_type{"core_type", "tgc_c"};
cci::cci_param<std::string> backend{"backend", "interp"}; cci::cci_param<std::string> backend{"backend", "interp"};
cci::cci_param<unsigned short> gdb_server_port{"gdb_server_port", 0}; cci::cci_param<unsigned short> gdb_server_port{"gdb_server_port", 0};
@ -145,9 +137,7 @@ protected:
tlm_utils::tlm_quantumkeeper quantum_keeper; tlm_utils::tlm_quantumkeeper quantum_keeper;
std::vector<uint8_t> write_buf; std::vector<uint8_t> write_buf;
std::unique_ptr<core_wrapper> cpu; std::unique_ptr<core_wrapper> cpu;
std::unique_ptr<iss::vm_if> vm;
sc_core::sc_time curr_clk; sc_core::sc_time curr_clk;
iss::debugger::target_adapter_if *tgt_adapter;
#ifdef WITH_SCV #ifdef WITH_SCV
//! transaction recording database //! transaction recording database
scv_tr_db *m_db; scv_tr_db *m_db;

172
src/sysc/core_complex.cpp
View File

@ -31,17 +31,20 @@
*******************************************************************************/ *******************************************************************************/
#include "sysc/core_complex.h" #include "sysc/core_complex.h"
#ifdef CORE_TGC_B
#include "iss/arch/riscv_hart_m_p.h"
#include "iss/arch/tgc_b.h"
using tgc_b_plat_type = iss::arch::riscv_hart_m_p<iss::arch::tgc_b>;
#endif
#ifdef CORE_TGC_C #ifdef CORE_TGC_C
#include "iss/arch/riscv_hart_m_p.h" #include "iss/arch/riscv_hart_m_p.h"
#include "iss/arch/tgc_c.h" #include "iss/arch/tgc_c.h"
using core_type = iss::arch::tgc_c; using tgc_c_plat_type = iss::arch::riscv_hart_m_p<iss::arch::tgc_c>;
using plat_type = iss::arch::riscv_hart_m_p<core_type>;
#endif #endif
#ifdef CORE_TGC_D #ifdef CORE_TGC_D
#include "iss/arch/riscv_hart_mu_p.h" #include "iss/arch/riscv_hart_mu_p.h"
#include "iss/arch/tgc_d.h" #include "iss/arch/tgc_d.h"
using core_type = iss::arch::tgc_d; using tgc_d_plat_type = iss::arch::riscv_hart_mu_p<iss::arch::tgc_d>;
using plat_type = iss::arch::riscv_hart_mu_p<core_type>;
#endif #endif
#include "iss/debugger/encoderdecoder.h" #include "iss/debugger/encoderdecoder.h"
#include "iss/debugger/gdb_session.h" #include "iss/debugger/gdb_session.h"
@ -53,6 +56,10 @@ using plat_type = iss::arch::riscv_hart_mu_p<core_type>;
#include <iostream> #include <iostream>
#include <sstream> #include <sstream>
#define STR(X) #X
#define CREATE_CORE(CN) \
else if (type == STR(CN)) { std::tie(cpu, vm) = create_core<CN ## _plat_type>(backend, gdb_port, hart_id); }
#ifdef WITH_SCV #ifdef WITH_SCV
#include <array> #include <array>
#include <scv.h> #include <scv.h>
@ -67,41 +74,17 @@ using namespace sc_core;
namespace { namespace {
iss::debugger::encoder_decoder encdec; iss::debugger::encoder_decoder encdec;
}
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",
"Instruction access fault",
"Illegal instruction",
"Breakpoint",
"Load address misaligned",
"Load access fault",
"Store/AMO address misaligned",
"Store/AMO access fault",
"Environment call from U-mode",
"Environment call from S-mode",
"Reserved",
"Environment call from M-mode",
"Instruction page fault",
"Load page fault",
"Reserved",
"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" } };
} }
class core_wrapper : public plat_type { template<typename PLAT>
class core_wrapper_t : public PLAT {
public: public:
using phys_addr_t = typename arch::traits<core_type>::phys_addr_t; using reg_t = typename arch::traits<typename PLAT::super>::reg_t;
core_wrapper(core_complex *owner) using phys_addr_t = typename arch::traits<typename PLAT::super>::phys_addr_t;
using heart_state_t = typename PLAT::hart_state_type;
core_wrapper_t(core_complex *owner)
: owner(owner) { } : owner(owner) { }
uint32_t get_mode() { return this->reg.PRIV; } uint32_t get_mode() { return this->reg.PRIV; }
@ -110,10 +93,10 @@ public:
inline bool get_interrupt_execution() { return this->interrupt_sim; } inline bool get_interrupt_execution() { return this->interrupt_sim; }
plat_type::hart_state<plat_type::reg_t> &get_state() { return this->state; } heart_state_t &get_state() { return this->state; }
void notify_phase(exec_phase p) override { void notify_phase(iss::arch_if::exec_phase p) override {
if (p == ISTART) owner->sync(this->reg.icount + cycle_offset); if (p == iss::arch_if::ISTART) owner->sync(this->reg.icount);
} }
sync_type needed_sync() const override { return PRE_SYNC; } sync_type needed_sync() const override { return PRE_SYNC; }
@ -122,7 +105,7 @@ public:
if (INFO <= Log<Output2FILE<disass>>::reporting_level() && Output2FILE<disass>::stream()) { if (INFO <= Log<Output2FILE<disass>>::reporting_level() && Output2FILE<disass>::stream()) {
std::stringstream s; std::stringstream s;
s << "[p:" << lvl[this->reg.PRIV] << ";s:0x" << std::hex << std::setfill('0') s << "[p:" << lvl[this->reg.PRIV] << ";s:0x" << std::hex << std::setfill('0')
<< std::setw(sizeof(reg_t) * 2) << (reg_t)state.mstatus << std::dec << ";c:" << this->reg.icount << "]"; << std::setw(sizeof(reg_t) * 2) << (reg_t)this->state.mstatus << std::dec << ";c:" << this->reg.icount << "]";
Log<Output2FILE<disass>>().get(INFO, "disass") Log<Output2FILE<disass>>().get(INFO, "disass")
<< "0x" << std::setw(16) << std::right << std::setfill('0') << std::hex << pc << "\t\t" << std::setw(40) << "0x" << std::setw(16) << std::right << std::setfill('0') << std::hex << pc << "\t\t" << std::setw(40)
<< std::setfill(' ') << std::left << instr << s.str(); << std::setfill(' ') << std::left << instr << s.str();
@ -165,7 +148,7 @@ public:
} }
return ret?Ok:Err; return ret?Ok:Err;
} else { } else {
return plat_type::read_csr(addr, val); return PLAT::read_csr(addr, val);
} }
} }
@ -174,11 +157,11 @@ public:
do { do {
wait(wfi_evt); wait(wfi_evt);
} while (this->reg.pending_trap == 0); } while (this->reg.pending_trap == 0);
plat_type::wait_until(flags); PLAT::wait_until(flags);
} }
void local_irq(short id, bool value) { void local_irq(short id, bool value) {
plat_type::reg_t mask = 0; reg_t mask = 0;
switch (id) { switch (id) {
case 16: // SW case 16: // SW
mask = 1 << 3; mask = 1 << 3;
@ -238,11 +221,82 @@ int cmd_sysc(int argc, char *argv[], debugger::out_func of, debugger::data_func
return Err; return Err;
} }
using cpu_ptr = std::unique_ptr<iss::arch_if>;
using vm_ptr= std::unique_ptr<iss::vm_if>;
class core_wrapper {
public:
core_wrapper(core_complex *owner) : owner(owner) { }
void reset(uint64_t addr){vm->reset(addr);}
inline void start(){vm->start();}
inline std::pair<uint64_t, bool> load_file(std::string const& name){ return cpu->load_file(name);};
std::function<unsigned(void)> get_mode;
std::function<uint64_t(void)> get_state;
std::function<bool(void)> get_interrupt_execution;
std::function<void(bool)> set_interrupt_execution;
std::function<void(short, bool)> local_irq;
template<typename PLAT>
std::tuple<cpu_ptr, vm_ptr> create_core(std::string const& backend, unsigned gdb_port, uint32_t hart_id){
auto* lcpu = new core_wrapper_t<PLAT>(owner);
lcpu->set_mhartid(hart_id);
get_mode = [lcpu]() { return lcpu->get_mode(); };
get_state = [lcpu]() { return lcpu->get_state().mstatus.backing.val; };
get_interrupt_execution = [lcpu]() { return lcpu->get_interrupt_execution(); };
set_interrupt_execution = [lcpu](bool b) { return lcpu->set_interrupt_execution(b); };
local_irq = [lcpu](short s, bool b) { return lcpu->local_irq(s, b); };
if(backend == "interp")
return {cpu_ptr{lcpu}, vm_ptr{iss::interp::create(lcpu, gdb_port)}};
#ifdef WITH_LLVM
if(backend == "llvm")
return {cpu_ptr{lcpu}, vm_ptr{iss::llvm::create(lcpu, gdb_port)}};
#endif
#ifdef WITH_TCC
if(backend == "tcc")
s return {cpu_ptr{lcpu}, vm_ptr{iss::tcc::create(lcpu, gdb_port)}};
#endif
return {nullptr, nullptr};
}
void create_cpu(std::string const& type, std::string const& backend, unsigned gdb_port, uint32_t hart_id){
if (type == "") {
LOG(ERROR) << "Illegal argument value for core type: " << type << std::endl;
}
#ifdef CORE_TGC_B
CREATE_CORE(tgc_c)
#endif
#ifdef CORE_TGC_C
CREATE_CORE(tgc_c)
#endif
#ifdef CORE_TGC_D
CREATE_CORE(tgc_d)
#endif
else {
LOG(ERROR) << "Illegal argument value for core type: " << type << std::endl;
}
auto *srv = debugger::server<debugger::gdb_session>::get();
if (srv) tgt_adapter = srv->get_target();
if (tgt_adapter)
tgt_adapter->add_custom_command(
{"sysc", [this](int argc, char *argv[], debugger::out_func of,
debugger::data_func df) -> int { return cmd_sysc(argc, argv, of, df, tgt_adapter); },
"SystemC sub-commands: break <time>, print_time"});
}
core_complex * const owner;
vm_ptr vm{nullptr};
cpu_ptr cpu{nullptr};
iss::debugger::target_adapter_if *tgt_adapter{nullptr};
};
core_complex::core_complex(sc_module_name name) core_complex::core_complex(sc_module_name name)
: sc_module(name) : sc_module(name)
, read_lut(tlm_dmi_ext()) , read_lut(tlm_dmi_ext())
, write_lut(tlm_dmi_ext()) , write_lut(tlm_dmi_ext())
, tgt_adapter(nullptr)
#ifdef WITH_SCV #ifdef WITH_SCV
, m_db(scv_tr_db::get_default_db()) , m_db(scv_tr_db::get_default_db())
, stream_handle(nullptr) , stream_handle(nullptr)
@ -279,40 +333,16 @@ core_complex::~core_complex() = default;
void core_complex::trace(sc_trace_file *trf) const {} void core_complex::trace(sc_trace_file *trf) const {}
using vm_ptr= std::unique_ptr<iss::vm_if>;
vm_ptr create_cpu(core_wrapper* cpu, std::string const& backend, unsigned gdb_port){
if(backend == "interp")
return vm_ptr{iss::interp::create<core_type>(cpu, gdb_port)};
#ifdef WITH_LLVM
if(backend == "llvm")
return vm_ptr{iss::llvm::create(lcpu, gdb_port)};
#endif
#ifdef WITH_TCC
if(backend == "tcc")
return vm_ptr{iss::tcc::create<core_type>(cpu, gdb_port)};
#endif
return {nullptr};
}
void core_complex::before_end_of_elaboration() { void core_complex::before_end_of_elaboration() {
SCCDEBUG(SCMOD)<<"instantiating iss::arch::tgf with "<<backend.get_value()<<" backend"; SCCDEBUG(SCMOD)<<"instantiating iss::arch::tgf with "<<backend.get_value()<<" backend";
cpu = scc::make_unique<core_wrapper>(this); cpu = scc::make_unique<core_wrapper>(this);
cpu->set_mhartid(mhartid.get_value()); cpu->create_cpu(core_type.get_value(), backend.get_value(), gdb_server_port.get_value(), mhartid.get_value());
sc_assert(cpu->vm!=nullptr);
vm = create_cpu(cpu.get(), backend.get_value(), gdb_server_port.get_value());
sc_assert(vm!=nullptr);
#ifdef WITH_SCV #ifdef WITH_SCV
vm->setDisassEnabled(enable_disass.get_value() || m_db != nullptr); cpu->vm->setDisassEnabled(enable_disass.get_value() || m_db != nullptr);
#else #else
vm->setDisassEnabled(enable_disass.get_value()); vm->setDisassEnabled(enable_disass.get_value());
#endif #endif
auto *srv = debugger::server<debugger::gdb_session>::get();
if (srv) tgt_adapter = srv->get_target();
if (tgt_adapter)
tgt_adapter->add_custom_command(
{"sysc", [this](int argc, char *argv[], debugger::out_func of,
debugger::data_func df) -> int { return cmd_sysc(argc, argv, of, df, tgt_adapter); },
"SystemC sub-commands: break <time>, print_time"});
} }
void core_complex::start_of_simulation() { void core_complex::start_of_simulation() {
@ -344,7 +374,7 @@ void core_complex::disass_output(uint64_t pc, const std::string instr_str) {
tr_handle.record_attribute("PC", pc); tr_handle.record_attribute("PC", pc);
tr_handle.record_attribute("INSTR", instr_str); tr_handle.record_attribute("INSTR", instr_str);
tr_handle.record_attribute("MODE", lvl[cpu->get_mode()]); tr_handle.record_attribute("MODE", lvl[cpu->get_mode()]);
tr_handle.record_attribute("MSTATUS", cpu->get_state().mstatus.backing.val); tr_handle.record_attribute("MSTATUS", cpu->get_state());
tr_handle.record_attribute("LTIME_START", quantum_keeper.get_current_time().value() / 1000); tr_handle.record_attribute("LTIME_START", quantum_keeper.get_current_time().value() / 1000);
#endif #endif
} }
@ -375,7 +405,7 @@ void core_complex::run() {
wait(clk_i.value_changed_event()); wait(clk_i.value_changed_event());
} }
cpu->set_interrupt_execution(false); cpu->set_interrupt_execution(false);
vm->start(); cpu->start();
} while (cpu->get_interrupt_execution()); } while (cpu->get_interrupt_execution());
sc_stop(); sc_stop();
} }