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fixes 64bit behavior of CSR regs

This commit is contained in:
Eyck Jentzsch 2023-03-27 12:04:43 +02:00
parent c5465bf9e2
commit 6213445bc4
2 changed files with 24 additions and 30 deletions
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27
src/iss/arch/riscv_hart_m_p.h
View File

@ -252,8 +252,11 @@ public:
return 0b100010001000; // only machine mode is supported
}
constexpr bool has_compressed() {
return traits<BASE>::MISA_VAL&0b0100;
}
constexpr reg_t get_pc_mask() {
return traits<BASE>::MISA_VAL&0b0100?~1:~3;
return has_compressed()?~1:~3;
}
riscv_hart_m_p(feature_config cfg = feature_config{});
@ -435,7 +438,7 @@ riscv_hart_m_p<BASE, FEAT>::riscv_hart_m_p(feature_config cfg)
csr_rd_cb[addr] = &this_class::read_null;
csr_wr_cb[addr] = &this_class::write_csr_reg;
}
for (unsigned addr = mhpmcounter3h; addr <= mhpmcounter31h; ++addr){
if(traits<BASE>::XLEN==32) for (unsigned addr = mhpmcounter3h; addr <= mhpmcounter31h; ++addr){
csr_rd_cb[addr] = &this_class::read_null;
csr_wr_cb[addr] = &this_class::write_csr_reg;
}
@ -446,7 +449,7 @@ riscv_hart_m_p<BASE, FEAT>::riscv_hart_m_p(feature_config cfg)
for (unsigned addr = hpmcounter3; addr <= hpmcounter31; ++addr){
csr_rd_cb[addr] = &this_class::read_null;
}
for (unsigned addr = hpmcounter3h; addr <= hpmcounter31h; ++addr){
if(traits<BASE>::XLEN==32) for (unsigned addr = hpmcounter3h; addr <= hpmcounter31h; ++addr){
csr_rd_cb[addr] = &this_class::read_null;
//csr_wr_cb[addr] = &this_class::write_csr_reg;
}
@ -469,12 +472,12 @@ riscv_hart_m_p<BASE, FEAT>::riscv_hart_m_p(feature_config cfg)
csr_rd_cb[mcycle] = &this_class::read_cycle;
csr_wr_cb[mcycle] = &this_class::write_cycle;
csr_rd_cb[mcycleh] = &this_class::read_cycle;
csr_wr_cb[mcycleh] = &this_class::write_cycle;
if(traits<BASE>::XLEN==32) csr_rd_cb[mcycleh] = &this_class::read_cycle;
if(traits<BASE>::XLEN==32) csr_wr_cb[mcycleh] = &this_class::write_cycle;
csr_rd_cb[minstret] = &this_class::read_instret;
csr_wr_cb[minstret] = &this_class::write_instret;
csr_rd_cb[minstreth] = &this_class::read_instret;
csr_wr_cb[minstreth] = &this_class::write_instret;
if(traits<BASE>::XLEN==32) csr_rd_cb[minstreth] = &this_class::read_instret;
if(traits<BASE>::XLEN==32) csr_wr_cb[minstreth] = &this_class::write_instret;
csr_rd_cb[mstatus] = &this_class::read_status;
csr_wr_cb[mstatus] = &this_class::write_status;
csr_rd_cb[mcause] = &this_class::read_cause;
@ -633,7 +636,7 @@ iss::status riscv_hart_m_p<BASE, FEAT>::read(const address_type type, const acce
try {
switch (space) {
case traits<BASE>::MEM: {
auto alignment = is_fetch(access)? (traits<BASE>::MISA_VAL&0x100? 2 : 4) : length;
auto alignment = is_fetch(access)? (has_compressed()? 2 : 4) : length;
if (unlikely(is_fetch(access) && (addr&(alignment-1)))) {
fault_data = addr;
if (is_debug(access)) throw trap_access(0, addr);
@ -869,7 +872,6 @@ template <typename BASE, features_e FEAT> iss::status riscv_hart_m_p<BASE, FEAT>
if (addr == mcycle) {
val = static_cast<reg_t>(cycle_val);
} else if (addr == mcycleh) {
if (sizeof(typename traits<BASE>::reg_t) != 4) return iss::Err;
val = static_cast<reg_t>(cycle_val >> 32);
}
return iss::Ok;
@ -877,8 +879,6 @@ template <typename BASE, features_e FEAT> iss::status riscv_hart_m_p<BASE, FEAT>
template <typename BASE, features_e FEAT> iss::status riscv_hart_m_p<BASE, FEAT>::write_cycle(unsigned addr, reg_t val) {
if (sizeof(typename traits<BASE>::reg_t) != 4) {
if (addr == mcycleh)
return iss::Err;
mcycle_csr = static_cast<uint64_t>(val);
} else {
if (addr == mcycle) {
@ -895,7 +895,6 @@ template <typename BASE, features_e FEAT> iss::status riscv_hart_m_p<BASE, FEAT>
if ((addr&0xff) == (minstret&0xff)) {
val = static_cast<reg_t>(this->instret);
} else if ((addr&0xff) == (minstreth&0xff)) {
if (sizeof(typename traits<BASE>::reg_t) != 4) return iss::Err;
val = static_cast<reg_t>(this->instret >> 32);
}
return iss::Ok;
@ -903,8 +902,6 @@ template <typename BASE, features_e FEAT> iss::status riscv_hart_m_p<BASE, FEAT>
template <typename BASE, features_e FEAT> iss::status riscv_hart_m_p<BASE, FEAT>::write_instret(unsigned addr, reg_t val) {
if (sizeof(typename traits<BASE>::reg_t) != 4) {
if ((addr&0xff) == (minstreth&0xff))
return iss::Err;
this->instret = static_cast<uint64_t>(val);
} else {
if ((addr&0xff) == (minstret&0xff)) {
@ -1244,7 +1241,7 @@ template <typename BASE, features_e FEAT> uint64_t riscv_hart_m_p<BASE, FEAT>::e
csr[mtval] = static_cast<reg_t>(addr);
break;
case 2:
csr[mtval] = (instr & 0x3)==3?instr:instr&0xffff;
csr[mtval] = (!has_compressed() || (instr & 0x3)==3)?instr:instr&0xffff;
break;
case 3:
if((FEAT & FEAT_DEBUG) && (csr[dcsr] & 0x8000)) {

27
src/iss/arch/riscv_hart_mu_p.h
View File

@ -193,8 +193,11 @@ public:
return m[mode];
}
constexpr bool has_compressed() {
return traits<BASE>::MISA_VAL&0b0100;
}
constexpr reg_t get_pc_mask() {
return traits<BASE>::MISA_VAL&0b0100?~1:~3;
return has_compressed()?~1:~3;
}
riscv_hart_mu_p(feature_config cfg = feature_config{});
@ -379,7 +382,7 @@ riscv_hart_mu_p<BASE, FEAT>::riscv_hart_mu_p(feature_config cfg)
csr_rd_cb[addr] = &this_class::read_null;
csr_wr_cb[addr] = &this_class::write_csr_reg;
}
for (unsigned addr = mhpmcounter3h; addr <= mhpmcounter31h; ++addr){
if(traits<BASE>::XLEN==32) for (unsigned addr = mhpmcounter3h; addr <= mhpmcounter31h; ++addr){
csr_rd_cb[addr] = &this_class::read_null;
csr_wr_cb[addr] = &this_class::write_csr_reg;
}
@ -390,7 +393,7 @@ riscv_hart_mu_p<BASE, FEAT>::riscv_hart_mu_p(feature_config cfg)
for (unsigned addr = hpmcounter3; addr <= hpmcounter31; ++addr){
csr_rd_cb[addr] = &this_class::read_null;
}
for (unsigned addr = hpmcounter3h; addr <= hpmcounter31h; ++addr){
if(traits<BASE>::XLEN==32) for (unsigned addr = hpmcounter3h; addr <= hpmcounter31h; ++addr){
csr_rd_cb[addr] = &this_class::read_null;
//csr_wr_cb[addr] = &this_class::write_csr_reg;
}
@ -414,12 +417,12 @@ riscv_hart_mu_p<BASE, FEAT>::riscv_hart_mu_p(feature_config cfg)
csr_rd_cb[mcycle] = &this_class::read_cycle;
csr_wr_cb[mcycle] = &this_class::write_cycle;
csr_rd_cb[mcycleh] = &this_class::read_cycle;
csr_wr_cb[mcycleh] = &this_class::write_cycle;
if(traits<BASE>::XLEN==32) csr_rd_cb[mcycleh] = &this_class::read_cycle;
if(traits<BASE>::XLEN==32) csr_wr_cb[mcycleh] = &this_class::write_cycle;
csr_rd_cb[minstret] = &this_class::read_instret;
csr_wr_cb[minstret] = &this_class::write_instret;
csr_rd_cb[minstreth] = &this_class::read_instret;
csr_wr_cb[minstreth] = &this_class::write_instret;
if(traits<BASE>::XLEN==32) csr_rd_cb[minstreth] = &this_class::read_instret;
if(traits<BASE>::XLEN==32) csr_wr_cb[minstreth] = &this_class::write_instret;
csr_rd_cb[mstatus] = &this_class::read_status;
csr_wr_cb[mstatus] = &this_class::write_status;
csr_rd_cb[mcause] = &this_class::read_cause;
@ -713,7 +716,7 @@ iss::status riscv_hart_mu_p<BASE, FEAT>::read(const address_type type, const acc
return iss::Err;
}
}
auto alignment = is_fetch(access)? (traits<BASE>::MISA_VAL&0x100? 2 : 4) : length;
auto alignment = is_fetch(access)? (has_compressed()? 2 : 4) : length;
if (unlikely(is_fetch(access) && (addr&(alignment-1)))) {
fault_data = addr;
if (is_debug(access)) throw trap_access(0, addr);
@ -957,7 +960,6 @@ template <typename BASE, features_e FEAT> iss::status riscv_hart_mu_p<BASE, FEAT
if (addr == mcycle) {
val = static_cast<reg_t>(cycle_val);
} else if (addr == mcycleh) {
if (sizeof(typename traits<BASE>::reg_t) != 4) return iss::Err;
val = static_cast<reg_t>(cycle_val >> 32);
}
return iss::Ok;
@ -965,8 +967,6 @@ template <typename BASE, features_e FEAT> iss::status riscv_hart_mu_p<BASE, FEAT
template <typename BASE, features_e FEAT> iss::status riscv_hart_mu_p<BASE, FEAT>::write_cycle(unsigned addr, reg_t val) {
if (sizeof(typename traits<BASE>::reg_t) != 4) {
if (addr == mcycleh)
return iss::Err;
mcycle_csr = static_cast<uint64_t>(val);
} else {
if (addr == mcycle) {
@ -983,7 +983,6 @@ template <typename BASE, features_e FEAT> iss::status riscv_hart_mu_p<BASE, FEAT
if ((addr&0xff) == (minstret&0xff)) {
val = static_cast<reg_t>(this->instret);
} else if ((addr&0xff) == (minstreth&0xff)) {
if (sizeof(typename traits<BASE>::reg_t) != 4) return iss::Err;
val = static_cast<reg_t>(this->instret >> 32);
}
return iss::Ok;
@ -991,8 +990,6 @@ template <typename BASE, features_e FEAT> iss::status riscv_hart_mu_p<BASE, FEAT
template <typename BASE, features_e FEAT> iss::status riscv_hart_mu_p<BASE, FEAT>::write_instret(unsigned addr, reg_t val) {
if (sizeof(typename traits<BASE>::reg_t) != 4) {
if ((addr&0xff) == (minstreth&0xff))
return iss::Err;
this->instret = static_cast<uint64_t>(val);
} else {
if ((addr&0xff) == (minstret&0xff)) {
@ -1369,7 +1366,7 @@ template <typename BASE, features_e FEAT> uint64_t riscv_hart_mu_p<BASE, FEAT>::
csr[utval | (new_priv << 8)] = static_cast<reg_t>(addr);
break;
case 2:
csr[utval | (new_priv << 8)] = (instr & 0x3)==3?instr:instr&0xffff;
csr[utval | (new_priv << 8)] = (!has_compressed() || (instr & 0x3)==3)?instr:instr&0xffff;
break;
case 3:
if((FEAT & FEAT_DEBUG) && (csr[dcsr] & 0x8000)) {