DBT-RISE-TGC/gen_input/templates/asmjit/CORENAME.cpp.gtl

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/*******************************************************************************
* Copyright (C) 2017-2024 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.
*
*******************************************************************************/
// clang-format off
#include <iss/arch/${coreDef.name.toLowerCase()}.h>
#include <iss/debugger/gdb_session.h>
#include <iss/debugger/server.h>
#include <iss/iss.h>
#include <iss/asmjit/vm_base.h>
#include <asmjit/asmjit.h>
#include <util/logging.h>
#ifndef FMT_HEADER_ONLY
#define FMT_HEADER_ONLY
#endif
#include <fmt/format.h>
#include <array>
#include <iss/debugger/riscv_target_adapter.h>
namespace iss {
namespace asmjit {
namespace ${coreDef.name.toLowerCase()} {
using namespace ::asmjit;
using namespace iss::arch;
using namespace iss::debugger;
template <typename ARCH> class vm_impl : public iss::asmjit::vm_base<ARCH> {
public:
using traits = arch::traits<ARCH>;
using super = typename iss::asmjit::vm_base<ARCH>;
using virt_addr_t = typename super::virt_addr_t;
using phys_addr_t = typename super::phys_addr_t;
using code_word_t = typename super::code_word_t;
using mem_type_e = typename super::mem_type_e;
using addr_t = typename super::addr_t;
vm_impl();
vm_impl(ARCH &core, unsigned core_id = 0, unsigned cluster_id = 0);
void enableDebug(bool enable) { super::sync_exec = super::ALL_SYNC; }
target_adapter_if *accquire_target_adapter(server_if *srv) override {
debugger_if::dbg_enabled = true;
if (vm_base<ARCH>::tgt_adapter == nullptr)
vm_base<ARCH>::tgt_adapter = new riscv_target_adapter<ARCH>(srv, this->get_arch());
return vm_base<ARCH>::tgt_adapter;
}
protected:
using super::mov;
using super::cmp;
using super::get_ptr_for;
using super::get_reg;
using super::get_reg_Gp;
using super::get_reg_for;
using super::get_reg_for_Gp;
using super::load_reg_from_mem;
using super::load_reg_from_mem_Gp;
using super::write_reg_to_mem;
using super::gen_ext;
using super::gen_read_mem;
using super::gen_write_mem;
using super::gen_wait;
using super::gen_leave;
using super::gen_operation;
using super::gen_sync;
using super::gen_set_tval;
using this_class = vm_impl<ARCH>;
using compile_func = continuation_e (this_class::*)(virt_addr_t&, code_word_t, jit_holder&);
continuation_e gen_single_inst_behavior(virt_addr_t&, unsigned int &, jit_holder&) override;
void gen_block_prologue(jit_holder& jh) override;
void gen_block_epilogue(jit_holder& jh) override;
inline const char *name(size_t index){return traits::reg_aliases.at(index);}
void gen_instr_prologue(jit_holder& jh);
void gen_instr_epilogue(jit_holder& jh);
inline void gen_raise(jit_holder& jh, uint16_t trap_id, uint16_t cause);
template<unsigned W, typename U, typename S = typename std::make_signed<U>::type>
inline S sext(U from) {
auto mask = (1ULL<<W) - 1;
auto sign_mask = 1ULL<<(W-1);
return (from & mask) | ((from & sign_mask) ? ~mask : 0);
}
private:
/****************************************************************************
* start opcode definitions
****************************************************************************/
struct instruction_descriptor {
size_t length;
uint32_t value;
uint32_t mask;
compile_func op;
};
struct decoding_tree_node{
std::vector<instruction_descriptor> instrs;
std::vector<decoding_tree_node*> children;
uint32_t submask = std::numeric_limits<uint32_t>::max();
uint32_t value;
decoding_tree_node(uint32_t value) : value(value){}
};
decoding_tree_node* root {nullptr};
const std::array<instruction_descriptor, ${instructions.size()}> instr_descr = {{
/* entries are: size, valid value, valid mask, function ptr */<%instructions.each{instr -> %>
/* instruction ${instr.instruction.name}, encoding '${instr.encoding}' */
{${instr.length}, ${instr.encoding}, ${instr.mask}, &this_class::__${generator.functionName(instr.name)}},<%}%>
}};
/* instruction definitions */<%instructions.eachWithIndex{instr, idx -> %>
/* instruction ${idx}: ${instr.name} */
continuation_e __${generator.functionName(instr.name)}(virt_addr_t& pc, code_word_t instr, jit_holder& jh){
uint64_t PC = pc.val;
<%instr.fields.eachLine{%>${it}
<%}%>if(this->disass_enabled){
/* generate disass */
<%instr.disass.eachLine{%>
${it}<%}%>
InvokeNode* call_print_disass;
char* mnemonic_ptr = strdup(mnemonic.c_str());
jh.disass_collection.push_back(mnemonic_ptr);
jh.cc.invoke(&call_print_disass, &print_disass, FuncSignature::build<void, void *, uint64_t, char *>());
call_print_disass->setArg(0, jh.arch_if_ptr);
call_print_disass->setArg(1, pc.val);
call_print_disass->setArg(2, mnemonic_ptr);
}
x86::Compiler& cc = jh.cc;
cc.comment(fmt::format("${instr.name}_{:#x}:",pc.val).c_str());
gen_sync(jh, PRE_SYNC, ${idx});
mov(cc, jh.pc, pc.val);
gen_set_tval(jh, instr);
pc = pc+${instr.length/8};
mov(cc, jh.next_pc, pc.val);
gen_instr_prologue(jh);
cc.comment("//behavior:");
/*generate behavior*/
<%instr.behavior.eachLine{%>${it}
<%}%>
gen_sync(jh, POST_SYNC, ${idx});
gen_instr_epilogue(jh);
return returnValue;
}
<%}%>
/****************************************************************************
* end opcode definitions
****************************************************************************/
continuation_e illegal_instruction(virt_addr_t &pc, code_word_t instr, jit_holder& jh ) {
x86::Compiler& cc = jh.cc;
if(this->disass_enabled){
auto mnemonic = std::string("illegal_instruction");
InvokeNode* call_print_disass;
char* mnemonic_ptr = strdup(mnemonic.c_str());
jh.disass_collection.push_back(mnemonic_ptr);
jh.cc.invoke(&call_print_disass, &print_disass, FuncSignature::build<void, void *, uint64_t, char *>());
call_print_disass->setArg(0, jh.arch_if_ptr);
call_print_disass->setArg(1, pc.val);
call_print_disass->setArg(2, mnemonic_ptr);
}
cc.comment(fmt::format("illegal_instruction{:#x}:",pc.val).c_str());
gen_sync(jh, PRE_SYNC, instr_descr.size());
mov(cc, jh.pc, pc.val);
gen_set_tval(jh, instr);
pc = pc + ((instr & 3) == 3 ? 4 : 2);
mov(cc, jh.next_pc, pc.val);
gen_instr_prologue(jh);
cc.comment("//behavior:");
gen_raise(jh, 0, 2);
gen_sync(jh, POST_SYNC, instr_descr.size());
gen_instr_epilogue(jh);
return BRANCH;
}
//decoding functionality
void populate_decoding_tree(decoding_tree_node* root){
//create submask
for(auto instr: root->instrs){
root->submask &= instr.mask;
}
//put each instr according to submask&encoding into children
for(auto instr: root->instrs){
bool foundMatch = false;
for(auto child: root->children){
//use value as identifying trait
if(child->value == (instr.value&root->submask)){
child->instrs.push_back(instr);
foundMatch = true;
}
}
if(!foundMatch){
decoding_tree_node* child = new decoding_tree_node(instr.value&root->submask);
child->instrs.push_back(instr);
root->children.push_back(child);
}
}
root->instrs.clear();
//call populate_decoding_tree for all children
if(root->children.size() >1)
for(auto child: root->children){
populate_decoding_tree(child);
}
else{
//sort instrs by value of the mask, this works bc we want to have the least restrictive one last
std::sort(root->children[0]->instrs.begin(), root->children[0]->instrs.end(), [](const instruction_descriptor& instr1, const instruction_descriptor& instr2) {
return instr1.mask > instr2.mask;
});
}
}
compile_func decode_instr(decoding_tree_node* node, code_word_t word){
if(!node->children.size()){
if(node->instrs.size() == 1) return node->instrs[0].op;
for(auto instr : node->instrs){
if((instr.mask&word) == instr.value) return instr.op;
}
}
else{
for(auto child : node->children){
if (child->value == (node->submask&word)){
return decode_instr(child, word);
}
}
}
return nullptr;
}
};
template <typename ARCH> vm_impl<ARCH>::vm_impl() { this(new ARCH()); }
template <typename ARCH>
vm_impl<ARCH>::vm_impl(ARCH &core, unsigned core_id, unsigned cluster_id)
: vm_base<ARCH>(core, core_id, cluster_id) {
root = new decoding_tree_node(std::numeric_limits<uint32_t>::max());
for(auto instr: instr_descr){
root->instrs.push_back(instr);
}
populate_decoding_tree(root);
}
template <typename ARCH>
continuation_e vm_impl<ARCH>::gen_single_inst_behavior(virt_addr_t &pc, unsigned int &inst_cnt, jit_holder& jh) {
enum {TRAP_ID=1<<16};
code_word_t instr = 0;
phys_addr_t paddr(pc);
auto *const data = (uint8_t *)&instr;
if(this->core.has_mmu())
paddr = this->core.virt2phys(pc);
auto res = this->core.read(paddr, 4, data);
if (res != iss::Ok)
throw trap_access(TRAP_ID, pc.val);
if (instr == 0x0000006f || (instr&0xffff)==0xa001)
throw simulation_stopped(0); // 'J 0' or 'C.J 0'
++inst_cnt;
auto f = decode_instr(root, instr);
if (f == nullptr)
f = &this_class::illegal_instruction;
return (this->*f)(pc, instr, jh);
}
template <typename ARCH>
void vm_impl<ARCH>::gen_instr_prologue(jit_holder& jh) {
auto& cc = jh.cc;
cc.comment("//gen_instr_prologue");
x86_reg_t current_trap_state = get_reg_for(cc, traits::TRAP_STATE);
mov(cc, current_trap_state, get_ptr_for(jh, traits::TRAP_STATE));
mov(cc, get_ptr_for(jh, traits::PENDING_TRAP), current_trap_state);
}
template <typename ARCH>
void vm_impl<ARCH>::gen_instr_epilogue(jit_holder& jh) {
auto& cc = jh.cc;
cc.comment("//gen_instr_epilogue");
x86_reg_t current_trap_state = get_reg_for(cc, traits::TRAP_STATE);
mov(cc, current_trap_state, get_ptr_for(jh, traits::TRAP_STATE));
cmp(cc, current_trap_state, 0);
cc.jne(jh.trap_entry);
cc.inc(get_ptr_for(jh, traits::ICOUNT));
}
template <typename ARCH>
void vm_impl<ARCH>::gen_block_prologue(jit_holder& jh){
jh.pc = load_reg_from_mem_Gp(jh, traits::PC);
jh.next_pc = load_reg_from_mem_Gp(jh, traits::NEXT_PC);
jh.tval = get_reg_Gp(jh.cc, 64, false);
}
template <typename ARCH>
void vm_impl<ARCH>::gen_block_epilogue(jit_holder& jh){
x86::Compiler& cc = jh.cc;
cc.comment("//gen_block_epilogue");
cc.ret(jh.next_pc);
cc.bind(jh.trap_entry);
this->write_back(jh);
this->gen_sync(jh, POST_SYNC, -1);
x86::Gp current_trap_state = get_reg_for_Gp(cc, traits::TRAP_STATE);
mov(cc, current_trap_state, get_ptr_for(jh, traits::TRAP_STATE));
x86::Gp current_pc = get_reg_for_Gp(cc, traits::PC);
mov(cc, current_pc, get_ptr_for(jh, traits::PC));
cc.comment("//enter trap call;");
InvokeNode* call_enter_trap;
cc.invoke(&call_enter_trap, &enter_trap, FuncSignature::build<uint64_t, void*, uint64_t, uint64_t, uint64_t>());
call_enter_trap->setArg(0, jh.arch_if_ptr);
call_enter_trap->setArg(1, current_trap_state);
call_enter_trap->setArg(2, current_pc);
call_enter_trap->setArg(3, jh.tval);
x86_reg_t current_next_pc = get_reg_for(cc, traits::NEXT_PC);
mov(cc, current_next_pc, get_ptr_for(jh, traits::NEXT_PC));
mov(cc, jh.next_pc, current_next_pc);
mov(cc, get_ptr_for(jh, traits::LAST_BRANCH), std::numeric_limits<uint32_t>::max());
cc.ret(jh.next_pc);
}
template <typename ARCH>
inline void vm_impl<ARCH>::gen_raise(jit_holder& jh, uint16_t trap_id, uint16_t cause) {
auto& cc = jh.cc;
cc.comment("//gen_raise");
auto tmp1 = get_reg_for(cc, traits::TRAP_STATE);
mov(cc, tmp1, 0x80ULL << 24 | (cause << 16) | trap_id);
mov(cc, get_ptr_for(jh, traits::TRAP_STATE), tmp1);
mov(cc, jh.next_pc, std::numeric_limits<uint32_t>::max());
}
} // namespace tgc5c
template <>
std::unique_ptr<vm_if> create<arch::${coreDef.name.toLowerCase()}>(arch::${coreDef.name.toLowerCase()} *core, unsigned short port, bool dump) {
auto ret = new ${coreDef.name.toLowerCase()}::vm_impl<arch::${coreDef.name.toLowerCase()}>(*core, dump);
if (port != 0) debugger::server<debugger::gdb_session>::run_server(ret, port);
return std::unique_ptr<vm_if>(ret);
}
} // namespace asmjit
} // namespace iss
#include <iss/arch/riscv_hart_m_p.h>
#include <iss/arch/riscv_hart_mu_p.h>
#include <iss/factory.h>
namespace iss {
namespace {
volatile std::array<bool, 2> dummy = {
core_factory::instance().register_creator("${coreDef.name.toLowerCase()}|m_p|asmjit", [](unsigned port, void* init_data) -> std::tuple<cpu_ptr, vm_ptr>{
auto* cpu = new iss::arch::riscv_hart_m_p<iss::arch::${coreDef.name.toLowerCase()}>();
auto vm = new asmjit::${coreDef.name.toLowerCase()}::vm_impl<arch::${coreDef.name.toLowerCase()}>(*cpu, false);
if (port != 0) debugger::server<debugger::gdb_session>::run_server(vm, port);
if(init_data){
auto* cb = reinterpret_cast<semihosting_cb_t<arch::traits<arch::${coreDef.name.toLowerCase()}>::reg_t>*>(init_data);
cpu->set_semihosting_callback(*cb);
}
return {cpu_ptr{cpu}, vm_ptr{vm}};
}),
core_factory::instance().register_creator("${coreDef.name.toLowerCase()}|mu_p|asmjit", [](unsigned port, void* init_data) -> std::tuple<cpu_ptr, vm_ptr>{
auto* cpu = new iss::arch::riscv_hart_mu_p<iss::arch::${coreDef.name.toLowerCase()}>();
auto vm = new asmjit::${coreDef.name.toLowerCase()}::vm_impl<arch::${coreDef.name.toLowerCase()}>(*cpu, false);
if (port != 0) debugger::server<debugger::gdb_session>::run_server(vm, port);
if(init_data){
auto* cb = reinterpret_cast<semihosting_cb_t<arch::traits<arch::${coreDef.name.toLowerCase()}>::reg_t>*>(init_data);
cpu->set_semihosting_callback(*cb);
}
return {cpu_ptr{cpu}, vm_ptr{vm}};
})
};
}
}
// clang-format on