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[WIP] basic infrastructure working

This commit is contained in:
Eyck Jentzsch 2020-04-13 17:03:50 +02:00
parent 8cdf50d69e
commit ae1c0b99fe
3 changed files with 2550 additions and 109 deletions
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2
gen_input/RVC.core_desc
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@ -164,7 +164,7 @@ InsructionSet RV32IC extends RISCVBase{
val offs[XLEN] <= X[2] + uimm;
MEM[offs]{32} <= X[rs2];
}
DII {
DII(no_cont) { // Defined Illegal Instruction
encoding:b000 | b0 | b00000 | b00000 | b00;
raise(0, 2);
}

38
gen_input/templates/tcc/vm-vm_CORENAME.cpp.gtl
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@ -60,6 +60,7 @@ public:
using phys_addr_t = typename super::phys_addr_t;
using code_word_t = typename super::code_word_t;
using addr_t = typename super::addr_t;
using ICmpInst = typename super::ICmpInst;
vm_impl();
@ -90,16 +91,16 @@ protected:
compile_ret_t gen_single_inst_behavior(virt_addr_t &, unsigned int &, translation_unit&) override;
void gen_trap_behavior(translation_unit& os) override;
void gen_trap_behavior(translation_unit& tu) override;
void gen_raise_trap(uint16_t trap_id, uint16_t cause);
void gen_raise_trap(translation_unit& tu, uint16_t trap_id, uint16_t cause);
void gen_leave_trap(unsigned lvl);
void gen_leave_trap(translation_unit& tu, unsigned lvl);
void gen_wait(unsigned type);
void gen_wait(translation_unit& tu, unsigned type);
inline void gen_trap_check(translation_unit& os) {
os<<" if(*trap_state!=0) goto trap_entry;";
inline void gen_trap_check(translation_unit& tu) {
tu<<" if(*trap_state!=0) goto trap_entry;";
}
inline void gen_set_pc(translation_unit& tu, virt_addr_t pc, unsigned reg_num) {
@ -111,10 +112,10 @@ protected:
tu(" *pc = {:#x};", pc.val);
break;
default:
if(!tu.defined_regs[reg_num]){
if(!tu.defined_regs[reg_num]){
tu(" reg_t* reg{:02d} = (reg_t*){:#x};", reg_num, reinterpret_cast<uintptr_t>(get_reg_ptr(reg_num)));
tu.defined_regs[reg_num]=true;
}
}
tu(" *reg{:02d} = {:#x};", reg_num, pc.val);
}
}
@ -130,9 +131,9 @@ protected:
std::array<compile_func, LUT_SIZE_C> lut_00, lut_01, lut_10;
std::array<compile_func, LUT_SIZE> lut_11;
std::array<compile_func *, 4> qlut;
std::array<compile_func *, 4> qlut;
std::array<const uint32_t, 4> lutmasks = {{EXTR_MASK16, EXTR_MASK16, EXTR_MASK16, EXTR_MASK32}};
std::array<const uint32_t, 4> lutmasks = {{EXTR_MASK16, EXTR_MASK16, EXTR_MASK16, EXTR_MASK32}};
void expand_bit_mask(int pos, uint32_t mask, uint32_t value, uint32_t valid, uint32_t idx, compile_func lut[],
compile_func f) {
@ -190,8 +191,8 @@ private:
/* instruction definitions */<%instructions.eachWithIndex{instr, idx -> %>
/* instruction ${idx}: ${instr.name} */
compile_ret_t __${generator.functionName(instr.name)}(virt_addr_t& pc, code_word_t instr, std::ostringstream& os){<%instr.code.eachLine{%>
${it}<%}%>
compile_ret_t __${generator.functionName(instr.name)}(virt_addr_t& pc, code_word_t instr, translation_unit& tu){<%instr.code.eachLine{%>
${it}<%}%>
}
<%}%>
/****************************************************************************
@ -200,7 +201,7 @@ private:
compile_ret_t illegal_intruction(virt_addr_t &pc, code_word_t instr, translation_unit& tu) {
vm_impl::gen_sync(tu, iss::PRE_SYNC, instr_descr.size());
pc = pc + ((instr & 3) == 3 ? 4 : 2);
gen_raise_trap(0, 2); // illegal instruction trap
gen_raise_trap(tu, 0, 2); // illegal instruction trap
vm_impl::gen_sync(tu, iss::POST_SYNC, instr_descr.size());
vm_impl::gen_trap_check(tu);
return BRANCH;
@ -258,13 +259,18 @@ vm_impl<ARCH>::gen_single_inst_behavior(virt_addr_t &pc, unsigned int &inst_cnt,
return (this->*f)(pc, insn, tu);
}
template <typename ARCH> void vm_impl<ARCH>::gen_raise_trap(uint16_t trap_id, uint16_t cause) {
template <typename ARCH> void vm_impl<ARCH>::gen_raise_trap(translation_unit& tu, uint16_t trap_id, uint16_t cause) {
tu(" *trap_state = {:#x};", 0x80 << 24 | (cause << 16) | trap_id);
tu << tu.create_store(tu.gen_const(32, std::numeric_limits<uint32_t>::max()),traits<ARCH>::LAST_BRANCH);
}
template <typename ARCH> void vm_impl<ARCH>::gen_leave_trap(unsigned lvl) {
template <typename ARCH> void vm_impl<ARCH>::gen_leave_trap(translation_unit& tu, unsigned lvl) {
tu(" leave_trap(core_ptr, {});", lvl);
tu(" *next_pc = {};", tu.create_read_mem(traits<ARCH>::CSR, (lvl << 8) + 0x41, traits<ARCH>::XLEN / 8));
tu << tu.create_store(tu.gen_const(32, std::numeric_limits<uint32_t>::max()),traits<ARCH>::LAST_BRANCH);
}
template <typename ARCH> void vm_impl<ARCH>::gen_wait(unsigned type) {
template <typename ARCH> void vm_impl<ARCH>::gen_wait(translation_unit& tu, unsigned type) {
}
template <typename ARCH> void vm_impl<ARCH>::gen_trap_behavior(translation_unit& tu) {

2617
src/vm/tcc/vm_mnrv32.cpp
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