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riscv-isa-sim
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Move CSR initialization to its own file

pull/1758/head
Andrew Waterman 2 years ago
parent
fdd2570fc4
commit
e98294c3c2
4 changed files with 408 additions and 397 deletions
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  1. 401
      riscv/csr_init.cc
  2. 400
      riscv/processor.cc
  3. 3
      riscv/processor.h
  4. 1
      riscv/riscv.mk.in

401
riscv/csr_init.cc
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@ -0,0 +1,401 @@
#include "processor.h"
#include "debug_defines.h"
void state_t::csr_init(processor_t* const proc, reg_t max_isa)
{
// This assumes xlen is always max_xlen, which is true today (see
// mstatus_csr_t::unlogged_write()):
auto xlen = proc->get_isa().get_max_xlen();
csrmap[CSR_MISA] = misa = std::make_shared<misa_csr_t>(proc, CSR_MISA, max_isa);
mstatus = std::make_shared<mstatus_csr_t>(proc, CSR_MSTATUS);
if (xlen == 32) {
csrmap[CSR_MSTATUS] = std::make_shared<rv32_low_csr_t>(proc, CSR_MSTATUS, mstatus);
csrmap[CSR_MSTATUSH] = mstatush = std::make_shared<rv32_high_csr_t>(proc, CSR_MSTATUSH, mstatus);
} else {
csrmap[CSR_MSTATUS] = mstatus;
}
csrmap[CSR_MEPC] = mepc = std::make_shared<epc_csr_t>(proc, CSR_MEPC);
csrmap[CSR_MTVAL] = mtval = std::make_shared<basic_csr_t>(proc, CSR_MTVAL, 0);
csrmap[CSR_MSCRATCH] = std::make_shared<basic_csr_t>(proc, CSR_MSCRATCH, 0);
csrmap[CSR_MTVEC] = mtvec = std::make_shared<tvec_csr_t>(proc, CSR_MTVEC);
csrmap[CSR_MCAUSE] = mcause = std::make_shared<cause_csr_t>(proc, CSR_MCAUSE);
auto smcntrpmf_enabled = proc->extension_enabled_const(EXT_SMCNTRPMF);
const reg_t mask = smcntrpmf_enabled ? MHPMEVENT_MINH | MHPMEVENT_SINH |
MHPMEVENT_UINH | MHPMEVENT_VSINH | MHPMEVENT_VUINH : 0;
auto minstretcfg = std::make_shared<smcntrpmf_csr_t>(proc, CSR_MINSTRETCFG, mask, 0);
auto mcyclecfg = std::make_shared<smcntrpmf_csr_t>(proc, CSR_MCYCLECFG, mask, 0);
minstret = std::make_shared<wide_counter_csr_t>(proc, CSR_MINSTRET, minstretcfg);
mcycle = std::make_shared<wide_counter_csr_t>(proc, CSR_MCYCLE, mcyclecfg);
time = std::make_shared<time_counter_csr_t>(proc, CSR_TIME);
if (proc->extension_enabled_const(EXT_ZICNTR)) {
csrmap[CSR_INSTRET] = std::make_shared<counter_proxy_csr_t>(proc, CSR_INSTRET, minstret);
csrmap[CSR_CYCLE] = std::make_shared<counter_proxy_csr_t>(proc, CSR_CYCLE, mcycle);
csrmap[CSR_TIME] = time_proxy = std::make_shared<counter_proxy_csr_t>(proc, CSR_TIME, time);
}
if (xlen == 32) {
csr_t_p minstreth, mcycleh;
csrmap[CSR_MINSTRET] = std::make_shared<rv32_low_csr_t>(proc, CSR_MINSTRET, minstret);
csrmap[CSR_MINSTRETH] = minstreth = std::make_shared<rv32_high_csr_t>(proc, CSR_MINSTRETH, minstret);
csrmap[CSR_MCYCLE] = std::make_shared<rv32_low_csr_t>(proc, CSR_MCYCLE, mcycle);
csrmap[CSR_MCYCLEH] = mcycleh = std::make_shared<rv32_high_csr_t>(proc, CSR_MCYCLEH, mcycle);
if (proc->extension_enabled_const(EXT_ZICNTR)) {
auto timeh = std::make_shared<rv32_high_csr_t>(proc, CSR_TIMEH, time);
csrmap[CSR_INSTRETH] = std::make_shared<counter_proxy_csr_t>(proc, CSR_INSTRETH, minstreth);
csrmap[CSR_CYCLEH] = std::make_shared<counter_proxy_csr_t>(proc, CSR_CYCLEH, mcycleh);
csrmap[CSR_TIMEH] = std::make_shared<counter_proxy_csr_t>(proc, CSR_TIMEH, timeh);
}
} else {
csrmap[CSR_MINSTRET] = minstret;
csrmap[CSR_MCYCLE] = mcycle;
}
for (reg_t i = 0; i < N_HPMCOUNTERS; ++i) {
const reg_t which_mevent = CSR_MHPMEVENT3 + i;
const reg_t which_meventh = CSR_MHPMEVENT3H + i;
const reg_t which_mcounter = CSR_MHPMCOUNTER3 + i;
const reg_t which_mcounterh = CSR_MHPMCOUNTER3H + i;
const reg_t which_counter = CSR_HPMCOUNTER3 + i;
const reg_t which_counterh = CSR_HPMCOUNTER3H + i;
mevent[i] = std::make_shared<mevent_csr_t>(proc, which_mevent);
auto mcounter = std::make_shared<const_csr_t>(proc, which_mcounter, 0);
csrmap[which_mcounter] = mcounter;
if (proc->extension_enabled_const(EXT_ZIHPM)) {
auto counter = std::make_shared<counter_proxy_csr_t>(proc, which_counter, mcounter);
csrmap[which_counter] = counter;
}
if (xlen == 32) {
csrmap[which_mevent] = std::make_shared<rv32_low_csr_t>(proc, which_mevent, mevent[i]);;
auto mcounterh = std::make_shared<const_csr_t>(proc, which_mcounterh, 0);
csrmap[which_mcounterh] = mcounterh;
if (proc->extension_enabled_const(EXT_ZIHPM)) {
auto counterh = std::make_shared<counter_proxy_csr_t>(proc, which_counterh, mcounterh);
csrmap[which_counterh] = counterh;
}
if (proc->extension_enabled_const(EXT_SSCOFPMF)) {
auto meventh = std::make_shared<rv32_high_csr_t>(proc, which_meventh, mevent[i]);
csrmap[which_meventh] = meventh;
}
} else {
csrmap[which_mevent] = mevent[i];
}
}
csrmap[CSR_MCOUNTINHIBIT] = std::make_shared<const_csr_t>(proc, CSR_MCOUNTINHIBIT, 0);
if (proc->extension_enabled_const(EXT_SSCOFPMF))
csrmap[CSR_SCOUNTOVF] = std::make_shared<scountovf_csr_t>(proc, CSR_SCOUNTOVF);
csrmap[CSR_MIE] = mie = std::make_shared<mie_csr_t>(proc, CSR_MIE);
csrmap[CSR_MIP] = mip = std::make_shared<mip_csr_t>(proc, CSR_MIP);
auto sip_sie_accr = std::make_shared<generic_int_accessor_t>(
this,
~MIP_HS_MASK, // read_mask
MIP_SSIP | MIP_LCOFIP, // ip_write_mask
~MIP_HS_MASK, // ie_write_mask
generic_int_accessor_t::mask_mode_t::MIDELEG,
0 // shiftamt
);
auto hip_hie_accr = std::make_shared<generic_int_accessor_t>(
this,
MIP_HS_MASK, // read_mask
MIP_VSSIP, // ip_write_mask
MIP_HS_MASK, // ie_write_mask
generic_int_accessor_t::mask_mode_t::MIDELEG,
0 // shiftamt
);
auto vsip_vsie_accr = std::make_shared<generic_int_accessor_t>(
this,
MIP_VS_MASK, // read_mask
MIP_VSSIP, // ip_write_mask
MIP_VS_MASK, // ie_write_mask
generic_int_accessor_t::mask_mode_t::HIDELEG,
1 // shiftamt
);
auto nonvirtual_sip = std::make_shared<mip_proxy_csr_t>(proc, CSR_SIP, sip_sie_accr);
auto vsip = std::make_shared<mip_proxy_csr_t>(proc, CSR_VSIP, vsip_vsie_accr);
csrmap[CSR_VSIP] = vsip;
csrmap[CSR_SIP] = std::make_shared<virtualized_csr_t>(proc, nonvirtual_sip, vsip);
csrmap[CSR_HIP] = std::make_shared<mip_proxy_csr_t>(proc, CSR_HIP, hip_hie_accr);
csrmap[CSR_HVIP] = hvip = std::make_shared<hvip_csr_t>(proc, CSR_HVIP, 0);
auto nonvirtual_sie = std::make_shared<mie_proxy_csr_t>(proc, CSR_SIE, sip_sie_accr);
auto vsie = std::make_shared<mie_proxy_csr_t>(proc, CSR_VSIE, vsip_vsie_accr);
csrmap[CSR_VSIE] = vsie;
csrmap[CSR_SIE] = std::make_shared<virtualized_csr_t>(proc, nonvirtual_sie, vsie);
csrmap[CSR_HIE] = std::make_shared<mie_proxy_csr_t>(proc, CSR_HIE, hip_hie_accr);
csrmap[CSR_MEDELEG] = medeleg = std::make_shared<medeleg_csr_t>(proc, CSR_MEDELEG);
csrmap[CSR_MIDELEG] = mideleg = std::make_shared<mideleg_csr_t>(proc, CSR_MIDELEG);
const reg_t counteren_mask = (proc->extension_enabled_const(EXT_ZICNTR) ? 0x7UL : 0x0) | (proc->extension_enabled_const(EXT_ZIHPM) ? 0xfffffff8ULL : 0x0);
mcounteren = std::make_shared<masked_csr_t>(proc, CSR_MCOUNTEREN, counteren_mask, 0);
if (proc->extension_enabled_const('U')) csrmap[CSR_MCOUNTEREN] = mcounteren;
csrmap[CSR_SCOUNTEREN] = scounteren = std::make_shared<masked_csr_t>(proc, CSR_SCOUNTEREN, counteren_mask, 0);
nonvirtual_sepc = std::make_shared<epc_csr_t>(proc, CSR_SEPC);
csrmap[CSR_VSEPC] = vsepc = std::make_shared<epc_csr_t>(proc, CSR_VSEPC);
csrmap[CSR_SEPC] = sepc = std::make_shared<virtualized_csr_t>(proc, nonvirtual_sepc, vsepc);
nonvirtual_stval = std::make_shared<basic_csr_t>(proc, CSR_STVAL, 0);
csrmap[CSR_VSTVAL] = vstval = std::make_shared<basic_csr_t>(proc, CSR_VSTVAL, 0);
csrmap[CSR_STVAL] = stval = std::make_shared<virtualized_csr_t>(proc, nonvirtual_stval, vstval);
auto sscratch = std::make_shared<basic_csr_t>(proc, CSR_SSCRATCH, 0);
auto vsscratch = std::make_shared<basic_csr_t>(proc, CSR_VSSCRATCH, 0);
// Note: if max_isa does not include H, we don't really need this virtualized_csr_t at all (though it doesn't hurt):
csrmap[CSR_SSCRATCH] = std::make_shared<virtualized_csr_t>(proc, sscratch, vsscratch);
csrmap[CSR_VSSCRATCH] = vsscratch;
nonvirtual_stvec = std::make_shared<tvec_csr_t>(proc, CSR_STVEC);
csrmap[CSR_VSTVEC] = vstvec = std::make_shared<tvec_csr_t>(proc, CSR_VSTVEC);
csrmap[CSR_STVEC] = stvec = std::make_shared<virtualized_csr_t>(proc, nonvirtual_stvec, vstvec);
auto nonvirtual_satp = std::make_shared<satp_csr_t>(proc, CSR_SATP);
csrmap[CSR_VSATP] = vsatp = std::make_shared<base_atp_csr_t>(proc, CSR_VSATP);
csrmap[CSR_SATP] = satp = std::make_shared<virtualized_satp_csr_t>(proc, nonvirtual_satp, vsatp);
nonvirtual_scause = std::make_shared<cause_csr_t>(proc, CSR_SCAUSE);
csrmap[CSR_VSCAUSE] = vscause = std::make_shared<cause_csr_t>(proc, CSR_VSCAUSE);
csrmap[CSR_SCAUSE] = scause = std::make_shared<virtualized_csr_t>(proc, nonvirtual_scause, vscause);
csrmap[CSR_MTVAL2] = mtval2 = std::make_shared<mtval2_csr_t>(proc, CSR_MTVAL2);
csrmap[CSR_MTINST] = mtinst = std::make_shared<hypervisor_csr_t>(proc, CSR_MTINST);
csrmap[CSR_HSTATUS] = hstatus = std::make_shared<hstatus_csr_t>(proc, CSR_HSTATUS);
csrmap[CSR_HGEIE] = std::make_shared<const_csr_t>(proc, CSR_HGEIE, 0);
csrmap[CSR_HGEIP] = std::make_shared<const_csr_t>(proc, CSR_HGEIP, 0);
csrmap[CSR_HIDELEG] = hideleg = std::make_shared<hideleg_csr_t>(proc, CSR_HIDELEG, mideleg);
const reg_t hedeleg_mask =
(1 << CAUSE_MISALIGNED_FETCH) |
(1 << CAUSE_FETCH_ACCESS) |
(1 << CAUSE_ILLEGAL_INSTRUCTION) |
(1 << CAUSE_BREAKPOINT) |
(1 << CAUSE_MISALIGNED_LOAD) |
(1 << CAUSE_LOAD_ACCESS) |
(1 << CAUSE_MISALIGNED_STORE) |
(1 << CAUSE_STORE_ACCESS) |
(1 << CAUSE_USER_ECALL) |
(1 << CAUSE_FETCH_PAGE_FAULT) |
(1 << CAUSE_LOAD_PAGE_FAULT) |
(1 << CAUSE_STORE_PAGE_FAULT) |
(1 << CAUSE_SOFTWARE_CHECK_FAULT) |
(1 << CAUSE_HARDWARE_ERROR_FAULT);
csrmap[CSR_HEDELEG] = hedeleg = std::make_shared<masked_csr_t>(proc, CSR_HEDELEG, hedeleg_mask, 0);
csrmap[CSR_HCOUNTEREN] = hcounteren = std::make_shared<masked_csr_t>(proc, CSR_HCOUNTEREN, counteren_mask, 0);
htimedelta = std::make_shared<basic_csr_t>(proc, CSR_HTIMEDELTA, 0);
if (xlen == 32) {
csrmap[CSR_HTIMEDELTA] = std::make_shared<rv32_low_csr_t>(proc, CSR_HTIMEDELTA, htimedelta);
csrmap[CSR_HTIMEDELTAH] = std::make_shared<rv32_high_csr_t>(proc, CSR_HTIMEDELTAH, htimedelta);
} else {
csrmap[CSR_HTIMEDELTA] = htimedelta;
}
csrmap[CSR_HTVAL] = htval = std::make_shared<basic_csr_t>(proc, CSR_HTVAL, 0);
csrmap[CSR_HTINST] = htinst = std::make_shared<basic_csr_t>(proc, CSR_HTINST, 0);
csrmap[CSR_HGATP] = hgatp = std::make_shared<hgatp_csr_t>(proc, CSR_HGATP);
nonvirtual_sstatus = std::make_shared<sstatus_proxy_csr_t>(proc, CSR_SSTATUS, mstatus);
csrmap[CSR_VSSTATUS] = vsstatus = std::make_shared<vsstatus_csr_t>(proc, CSR_VSSTATUS);
csrmap[CSR_SSTATUS] = sstatus = std::make_shared<sstatus_csr_t>(proc, nonvirtual_sstatus, vsstatus);
csrmap[CSR_DPC] = dpc = std::make_shared<dpc_csr_t>(proc, CSR_DPC);
csrmap[CSR_DSCRATCH0] = std::make_shared<debug_mode_csr_t>(proc, CSR_DSCRATCH0);
csrmap[CSR_DSCRATCH1] = std::make_shared<debug_mode_csr_t>(proc, CSR_DSCRATCH1);
csrmap[CSR_DCSR] = dcsr = std::make_shared<dcsr_csr_t>(proc, CSR_DCSR);
csrmap[CSR_TSELECT] = tselect = std::make_shared<tselect_csr_t>(proc, CSR_TSELECT);
if (proc->get_cfg().trigger_count > 0) {
csrmap[CSR_TDATA1] = std::make_shared<tdata1_csr_t>(proc, CSR_TDATA1);
csrmap[CSR_TDATA2] = tdata2 = std::make_shared<tdata2_csr_t>(proc, CSR_TDATA2);
csrmap[CSR_TDATA3] = std::make_shared<tdata3_csr_t>(proc, CSR_TDATA3);
csrmap[CSR_TINFO] = std::make_shared<tinfo_csr_t>(proc, CSR_TINFO);
csrmap[CSR_TCONTROL] = tcontrol = std::make_shared<masked_csr_t>(proc, CSR_TCONTROL, CSR_TCONTROL_MPTE | CSR_TCONTROL_MTE, 0);
} else {
csrmap[CSR_TDATA1] = std::make_shared<const_csr_t>(proc, CSR_TDATA1, 0);
csrmap[CSR_TDATA2] = tdata2 = std::make_shared<const_csr_t>(proc, CSR_TDATA2, 0);
csrmap[CSR_TDATA3] = std::make_shared<const_csr_t>(proc, CSR_TDATA3, 0);
csrmap[CSR_TINFO] = std::make_shared<const_csr_t>(proc, CSR_TINFO, 0);
csrmap[CSR_TCONTROL] = tcontrol = std::make_shared<const_csr_t>(proc, CSR_TCONTROL, 0);
}
unsigned scontext_length = (xlen == 32 ? 16 : 32); // debug spec suggests 16-bit for RV32 and 32-bit for RV64
csrmap[CSR_SCONTEXT] = scontext = std::make_shared<masked_csr_t>(proc, CSR_SCONTEXT, (reg_t(1) << scontext_length) - 1, 0);
unsigned hcontext_length = (xlen == 32 ? 6 : 13) + (proc->extension_enabled('H') ? 1 : 0); // debug spec suggest 7-bit (6-bit) for RV32 and 14-bit (13-bit) for RV64 with (without) H extension
csrmap[CSR_HCONTEXT] = std::make_shared<masked_csr_t>(proc, CSR_HCONTEXT, (reg_t(1) << hcontext_length) - 1, 0);
csrmap[CSR_MCONTEXT] = mcontext = std::make_shared<proxy_csr_t>(proc, CSR_MCONTEXT, csrmap[CSR_HCONTEXT]);
csrmap[CSR_MSECCFG] = mseccfg = std::make_shared<mseccfg_csr_t>(proc, CSR_MSECCFG);
for (int i = 0; i < max_pmp; ++i) {
csrmap[CSR_PMPADDR0 + i] = pmpaddr[i] = std::make_shared<pmpaddr_csr_t>(proc, CSR_PMPADDR0 + i);
}
for (int i = 0; i < max_pmp; i += xlen / 8) {
reg_t addr = CSR_PMPCFG0 + i / 4;
csrmap[addr] = std::make_shared<pmpcfg_csr_t>(proc, addr);
}
csrmap[CSR_FFLAGS] = fflags = std::make_shared<float_csr_t>(proc, CSR_FFLAGS, FSR_AEXC >> FSR_AEXC_SHIFT, 0);
csrmap[CSR_FRM] = frm = std::make_shared<float_csr_t>(proc, CSR_FRM, FSR_RD >> FSR_RD_SHIFT, 0);
assert(FSR_AEXC_SHIFT == 0); // composite_csr_t assumes fflags begins at bit 0
csrmap[CSR_FCSR] = std::make_shared<composite_csr_t>(proc, CSR_FCSR, frm, fflags, FSR_RD_SHIFT);
csrmap[CSR_SEED] = std::make_shared<seed_csr_t>(proc, CSR_SEED);
csrmap[CSR_MARCHID] = std::make_shared<const_csr_t>(proc, CSR_MARCHID, 5);
csrmap[CSR_MIMPID] = std::make_shared<const_csr_t>(proc, CSR_MIMPID, 0);
csrmap[CSR_MVENDORID] = std::make_shared<const_csr_t>(proc, CSR_MVENDORID, 0);
csrmap[CSR_MHARTID] = std::make_shared<const_csr_t>(proc, CSR_MHARTID, proc->get_id());
csrmap[CSR_MCONFIGPTR] = std::make_shared<const_csr_t>(proc, CSR_MCONFIGPTR, 0);
const reg_t menvcfg_mask = (proc->extension_enabled(EXT_ZICBOM) ? MENVCFG_CBCFE | MENVCFG_CBIE : 0) |
(proc->extension_enabled(EXT_ZICBOZ) ? MENVCFG_CBZE : 0) |
(proc->extension_enabled(EXT_SMNPM) ? MENVCFG_PMM : 0) |
(proc->extension_enabled(EXT_SVADU) ? MENVCFG_ADUE: 0) |
(proc->extension_enabled(EXT_SVPBMT) ? MENVCFG_PBMTE : 0) |
(proc->extension_enabled(EXT_SSTC) ? MENVCFG_STCE : 0) |
(proc->extension_enabled(EXT_ZICFILP) ? MENVCFG_LPE : 0) |
(proc->extension_enabled(EXT_ZICFISS) ? MENVCFG_SSE : 0) |
(proc->extension_enabled(EXT_SSDBLTRP) ? MENVCFG_DTE : 0);
menvcfg = std::make_shared<envcfg_csr_t>(proc, CSR_MENVCFG, menvcfg_mask, 0);
if (proc->extension_enabled_const('U')) {
if (xlen == 32) {
csrmap[CSR_MENVCFG] = std::make_shared<rv32_low_csr_t>(proc, CSR_MENVCFG, menvcfg);
csrmap[CSR_MENVCFGH] = std::make_shared<rv32_high_csr_t>(proc, CSR_MENVCFGH, menvcfg);
} else {
csrmap[CSR_MENVCFG] = menvcfg;
}
}
const reg_t senvcfg_mask = (proc->extension_enabled(EXT_ZICBOM) ? SENVCFG_CBCFE | SENVCFG_CBIE : 0) |
(proc->extension_enabled(EXT_ZICBOZ) ? SENVCFG_CBZE : 0) |
(proc->extension_enabled(EXT_SSNPM) ? SENVCFG_PMM : 0) |
(proc->extension_enabled(EXT_ZICFILP) ? SENVCFG_LPE : 0) |
(proc->extension_enabled(EXT_ZICFISS) ? SENVCFG_SSE : 0);
senvcfg = std::make_shared<senvcfg_csr_t>(proc, CSR_SENVCFG, senvcfg_mask, 0);
if (proc->extension_enabled_const('S'))
csrmap[CSR_SENVCFG] = senvcfg;
const reg_t henvcfg_mask = (proc->extension_enabled(EXT_ZICBOM) ? HENVCFG_CBCFE | HENVCFG_CBIE : 0) |
(proc->extension_enabled(EXT_ZICBOZ) ? HENVCFG_CBZE : 0) |
(proc->extension_enabled(EXT_SSNPM) ? HENVCFG_PMM : 0) |
(proc->extension_enabled(EXT_SVADU) ? HENVCFG_ADUE: 0) |
(proc->extension_enabled(EXT_SVPBMT) ? HENVCFG_PBMTE : 0) |
(proc->extension_enabled(EXT_SSTC) ? HENVCFG_STCE : 0) |
(proc->extension_enabled(EXT_ZICFILP) ? HENVCFG_LPE : 0) |
(proc->extension_enabled(EXT_ZICFISS) ? HENVCFG_SSE : 0) |
(proc->extension_enabled(EXT_SSDBLTRP) ? HENVCFG_DTE : 0);
henvcfg = std::make_shared<henvcfg_csr_t>(proc, CSR_HENVCFG, henvcfg_mask, 0, menvcfg);
if (proc->extension_enabled('H')) {
if (xlen == 32) {
csrmap[CSR_HENVCFG] = std::make_shared<rv32_low_csr_t>(proc, CSR_HENVCFG, henvcfg);
csrmap[CSR_HENVCFGH] = std::make_shared<rv32_high_csr_t>(proc, CSR_HENVCFGH, henvcfg);
} else {
csrmap[CSR_HENVCFG] = henvcfg;
}
}
if (proc->extension_enabled_const(EXT_SMSTATEEN)) {
const reg_t sstateen0_mask = (proc->extension_enabled(EXT_ZFINX) ? SSTATEEN0_FCSR : 0) |
(proc->extension_enabled(EXT_ZCMT) ? SSTATEEN0_JVT : 0) |
SSTATEEN0_CS;
const reg_t hstateen0_mask = sstateen0_mask | HSTATEEN0_SENVCFG | HSTATEEN_SSTATEEN;
const reg_t mstateen0_mask = hstateen0_mask | (proc->extension_enabled(EXT_SSQOSID) ? MSTATEEN0_PRIV114 : 0);
for (int i = 0; i < 4; i++) {
const reg_t mstateen_mask = i == 0 ? mstateen0_mask : MSTATEEN_HSTATEEN;
mstateen[i] = std::make_shared<masked_csr_t>(proc, CSR_MSTATEEN0 + i, mstateen_mask, 0);
if (xlen == 32) {
csrmap[CSR_MSTATEEN0 + i] = std::make_shared<rv32_low_csr_t>(proc, CSR_MSTATEEN0 + i, mstateen[i]);
csrmap[CSR_MSTATEEN0H + i] = std::make_shared<rv32_high_csr_t>(proc, CSR_MSTATEEN0H + i, mstateen[i]);
} else {
csrmap[CSR_MSTATEEN0 + i] = mstateen[i];
}
const reg_t hstateen_mask = i == 0 ? hstateen0_mask : HSTATEEN_SSTATEEN;
hstateen[i] = std::make_shared<hstateen_csr_t>(proc, CSR_HSTATEEN0 + i, hstateen_mask, 0, i);
if (xlen == 32) {
csrmap[CSR_HSTATEEN0 + i] = std::make_shared<rv32_low_csr_t>(proc, CSR_HSTATEEN0 + i, hstateen[i]);
csrmap[CSR_HSTATEEN0H + i] = std::make_shared<rv32_high_csr_t>(proc, CSR_HSTATEEN0H + i, hstateen[i]);
} else {
csrmap[CSR_HSTATEEN0 + i] = hstateen[i];
}
const reg_t sstateen_mask = i == 0 ? sstateen0_mask : 0;
csrmap[CSR_SSTATEEN0 + i] = sstateen[i] = std::make_shared<sstateen_csr_t>(proc, CSR_SSTATEEN0 + i, sstateen_mask, 0, i);
}
}
if (proc->extension_enabled_const(EXT_SMRNMI)) {
csrmap[CSR_MNSCRATCH] = std::make_shared<basic_csr_t>(proc, CSR_MNSCRATCH, 0);
csrmap[CSR_MNEPC] = mnepc = std::make_shared<epc_csr_t>(proc, CSR_MNEPC);
csrmap[CSR_MNCAUSE] = std::make_shared<const_csr_t>(proc, CSR_MNCAUSE, (reg_t)1 << (xlen - 1));
csrmap[CSR_MNSTATUS] = mnstatus = std::make_shared<mnstatus_csr_t>(proc, CSR_MNSTATUS);
}
if (proc->extension_enabled_const(EXT_SSTC)) {
stimecmp = std::make_shared<stimecmp_csr_t>(proc, CSR_STIMECMP, MIP_STIP);
vstimecmp = std::make_shared<stimecmp_csr_t>(proc, CSR_VSTIMECMP, MIP_VSTIP);
auto virtualized_stimecmp = std::make_shared<virtualized_stimecmp_csr_t>(proc, stimecmp, vstimecmp);
if (xlen == 32) {
csrmap[CSR_STIMECMP] = std::make_shared<rv32_low_csr_t>(proc, CSR_STIMECMP, virtualized_stimecmp);
csrmap[CSR_STIMECMPH] = std::make_shared<rv32_high_csr_t>(proc, CSR_STIMECMPH, virtualized_stimecmp);
csrmap[CSR_VSTIMECMP] = std::make_shared<rv32_low_csr_t>(proc, CSR_VSTIMECMP, vstimecmp);
csrmap[CSR_VSTIMECMPH] = std::make_shared<rv32_high_csr_t>(proc, CSR_VSTIMECMPH, vstimecmp);
} else {
csrmap[CSR_STIMECMP] = virtualized_stimecmp;
csrmap[CSR_VSTIMECMP] = vstimecmp;
}
}
if (proc->extension_enabled(EXT_ZCMT))
csrmap[CSR_JVT] = jvt = std::make_shared<jvt_csr_t>(proc, CSR_JVT, 0);
if (proc->extension_enabled(EXT_ZICFISS)) {
reg_t ssp_mask = -reg_t(xlen / 8);
csrmap[CSR_SSP] = ssp = std::make_shared<ssp_csr_t>(proc, CSR_SSP, ssp_mask, 0);
}
// Smcsrind / Sscsrind
sscsrind_reg_csr_t::sscsrind_reg_csr_t_p mireg[6];
sscsrind_reg_csr_t::sscsrind_reg_csr_t_p sireg[6];
sscsrind_reg_csr_t::sscsrind_reg_csr_t_p vsireg[6];
if (proc->extension_enabled_const(EXT_SMCSRIND)) {
csr_t_p miselect = std::make_shared<basic_csr_t>(proc, CSR_MISELECT, 0);
csrmap[CSR_MISELECT] = miselect;
const reg_t mireg_csrs[] = { CSR_MIREG, CSR_MIREG2, CSR_MIREG3, CSR_MIREG4, CSR_MIREG5, CSR_MIREG6 };
auto i = 0;
for (auto csr : mireg_csrs) {
csrmap[csr] = mireg[i] = std::make_shared<sscsrind_reg_csr_t>(proc, csr, miselect);
i++;
}
}
if (proc->extension_enabled_const(EXT_SSCSRIND)) {
csr_t_p vsiselect = std::make_shared<basic_csr_t>(proc, CSR_VSISELECT, 0);
csrmap[CSR_VSISELECT] = vsiselect;
csr_t_p siselect = std::make_shared<basic_csr_t>(proc, CSR_SISELECT, 0);
csrmap[CSR_SISELECT] = std::make_shared<virtualized_csr_t>(proc, siselect, vsiselect);
const reg_t vsireg_csrs[] = { CSR_VSIREG, CSR_VSIREG2, CSR_VSIREG3, CSR_VSIREG4, CSR_VSIREG5, CSR_VSIREG6 };
auto i = 0;
for (auto csr : vsireg_csrs) {
csrmap[csr] = vsireg[i] = std::make_shared<sscsrind_reg_csr_t>(proc, csr, vsiselect);
i++;
}
const reg_t sireg_csrs[] = { CSR_SIREG, CSR_SIREG2, CSR_SIREG3, CSR_SIREG4, CSR_SIREG5, CSR_SIREG6 };
i = 0;
for (auto csr : sireg_csrs) {
sireg[i] = std::make_shared<sscsrind_reg_csr_t>(proc, csr, siselect);
csrmap[csr] = std::make_shared<virtualized_indirect_csr_t>(proc, sireg[i], vsireg[i]);
i++;
}
}
if (smcntrpmf_enabled) {
if (xlen == 32) {
csrmap[CSR_MCYCLECFG] = std::make_shared<rv32_low_csr_t>(proc, CSR_MCYCLECFG, mcyclecfg);
csrmap[CSR_MCYCLECFGH] = std::make_shared<rv32_high_csr_t>(proc, CSR_MCYCLECFGH, mcyclecfg);
csrmap[CSR_MINSTRETCFG] = std::make_shared<rv32_low_csr_t>(proc, CSR_MINSTRETCFG, minstretcfg);
csrmap[CSR_MINSTRETCFGH] = std::make_shared<rv32_high_csr_t>(proc, CSR_MINSTRETCFGH, minstretcfg);
} else {
csrmap[CSR_MCYCLECFG] = mcyclecfg;
csrmap[CSR_MINSTRETCFG] = minstretcfg;
}
}
if (proc->extension_enabled_const(EXT_SSQOSID)) {
const reg_t srmcfg_mask = SRMCFG_MCID | SRMCFG_RCID;
srmcfg = std::make_shared<srmcfg_csr_t>(proc, CSR_SRMCFG, srmcfg_mask, 0);
csrmap[CSR_SRMCFG] = srmcfg;
}
}

400
riscv/processor.cc
View File

@ -141,411 +141,15 @@ void state_t::reset(processor_t* const proc, reg_t max_isa)
XPR.reset();
FPR.reset();
// This assumes xlen is always max_xlen, which is true today (see
// mstatus_csr_t::unlogged_write()):
auto xlen = proc->get_isa().get_max_xlen();
prv = prev_prv = PRV_M;
v = prev_v = false;
prv_changed = false;
v_changed = false;
csrmap[CSR_MISA] = misa = std::make_shared<misa_csr_t>(proc, CSR_MISA, max_isa);
mstatus = std::make_shared<mstatus_csr_t>(proc, CSR_MSTATUS);
if (xlen == 32) {
csrmap[CSR_MSTATUS] = std::make_shared<rv32_low_csr_t>(proc, CSR_MSTATUS, mstatus);
csrmap[CSR_MSTATUSH] = mstatush = std::make_shared<rv32_high_csr_t>(proc, CSR_MSTATUSH, mstatus);
} else {
csrmap[CSR_MSTATUS] = mstatus;
}
csrmap[CSR_MEPC] = mepc = std::make_shared<epc_csr_t>(proc, CSR_MEPC);
csrmap[CSR_MTVAL] = mtval = std::make_shared<basic_csr_t>(proc, CSR_MTVAL, 0);
csrmap[CSR_MSCRATCH] = std::make_shared<basic_csr_t>(proc, CSR_MSCRATCH, 0);
csrmap[CSR_MTVEC] = mtvec = std::make_shared<tvec_csr_t>(proc, CSR_MTVEC);
csrmap[CSR_MCAUSE] = mcause = std::make_shared<cause_csr_t>(proc, CSR_MCAUSE);
auto smcntrpmf_enabled = proc->extension_enabled_const(EXT_SMCNTRPMF);
const reg_t mask = smcntrpmf_enabled ? MHPMEVENT_MINH | MHPMEVENT_SINH |
MHPMEVENT_UINH | MHPMEVENT_VSINH | MHPMEVENT_VUINH : 0;
auto minstretcfg = std::make_shared<smcntrpmf_csr_t>(proc, CSR_MINSTRETCFG, mask, 0);
auto mcyclecfg = std::make_shared<smcntrpmf_csr_t>(proc, CSR_MCYCLECFG, mask, 0);
minstret = std::make_shared<wide_counter_csr_t>(proc, CSR_MINSTRET, minstretcfg);
mcycle = std::make_shared<wide_counter_csr_t>(proc, CSR_MCYCLE, mcyclecfg);
time = std::make_shared<time_counter_csr_t>(proc, CSR_TIME);
if (proc->extension_enabled_const(EXT_ZICNTR)) {
csrmap[CSR_INSTRET] = std::make_shared<counter_proxy_csr_t>(proc, CSR_INSTRET, minstret);
csrmap[CSR_CYCLE] = std::make_shared<counter_proxy_csr_t>(proc, CSR_CYCLE, mcycle);
csrmap[CSR_TIME] = time_proxy = std::make_shared<counter_proxy_csr_t>(proc, CSR_TIME, time);
}
if (xlen == 32) {
csr_t_p minstreth, mcycleh;
csrmap[CSR_MINSTRET] = std::make_shared<rv32_low_csr_t>(proc, CSR_MINSTRET, minstret);
csrmap[CSR_MINSTRETH] = minstreth = std::make_shared<rv32_high_csr_t>(proc, CSR_MINSTRETH, minstret);
csrmap[CSR_MCYCLE] = std::make_shared<rv32_low_csr_t>(proc, CSR_MCYCLE, mcycle);
csrmap[CSR_MCYCLEH] = mcycleh = std::make_shared<rv32_high_csr_t>(proc, CSR_MCYCLEH, mcycle);
if (proc->extension_enabled_const(EXT_ZICNTR)) {
auto timeh = std::make_shared<rv32_high_csr_t>(proc, CSR_TIMEH, time);
csrmap[CSR_INSTRETH] = std::make_shared<counter_proxy_csr_t>(proc, CSR_INSTRETH, minstreth);
csrmap[CSR_CYCLEH] = std::make_shared<counter_proxy_csr_t>(proc, CSR_CYCLEH, mcycleh);
csrmap[CSR_TIMEH] = std::make_shared<counter_proxy_csr_t>(proc, CSR_TIMEH, timeh);
}
} else {
csrmap[CSR_MINSTRET] = minstret;
csrmap[CSR_MCYCLE] = mcycle;
}
for (reg_t i = 0; i < N_HPMCOUNTERS; ++i) {
const reg_t which_mevent = CSR_MHPMEVENT3 + i;
const reg_t which_meventh = CSR_MHPMEVENT3H + i;
const reg_t which_mcounter = CSR_MHPMCOUNTER3 + i;
const reg_t which_mcounterh = CSR_MHPMCOUNTER3H + i;
const reg_t which_counter = CSR_HPMCOUNTER3 + i;
const reg_t which_counterh = CSR_HPMCOUNTER3H + i;
mevent[i] = std::make_shared<mevent_csr_t>(proc, which_mevent);
auto mcounter = std::make_shared<const_csr_t>(proc, which_mcounter, 0);
csrmap[which_mcounter] = mcounter;
if (proc->extension_enabled_const(EXT_ZIHPM)) {
auto counter = std::make_shared<counter_proxy_csr_t>(proc, which_counter, mcounter);
csrmap[which_counter] = counter;
}
if (xlen == 32) {
csrmap[which_mevent] = std::make_shared<rv32_low_csr_t>(proc, which_mevent, mevent[i]);;
auto mcounterh = std::make_shared<const_csr_t>(proc, which_mcounterh, 0);
csrmap[which_mcounterh] = mcounterh;
if (proc->extension_enabled_const(EXT_ZIHPM)) {
auto counterh = std::make_shared<counter_proxy_csr_t>(proc, which_counterh, mcounterh);
csrmap[which_counterh] = counterh;
}
if (proc->extension_enabled_const(EXT_SSCOFPMF)) {
auto meventh = std::make_shared<rv32_high_csr_t>(proc, which_meventh, mevent[i]);
csrmap[which_meventh] = meventh;
}
} else {
csrmap[which_mevent] = mevent[i];
}
}
csrmap[CSR_MCOUNTINHIBIT] = std::make_shared<const_csr_t>(proc, CSR_MCOUNTINHIBIT, 0);
if (proc->extension_enabled_const(EXT_SSCOFPMF))
csrmap[CSR_SCOUNTOVF] = std::make_shared<scountovf_csr_t>(proc, CSR_SCOUNTOVF);
csrmap[CSR_MIE] = mie = std::make_shared<mie_csr_t>(proc, CSR_MIE);
csrmap[CSR_MIP] = mip = std::make_shared<mip_csr_t>(proc, CSR_MIP);
auto sip_sie_accr = std::make_shared<generic_int_accessor_t>(
this,
~MIP_HS_MASK, // read_mask
MIP_SSIP | MIP_LCOFIP, // ip_write_mask
~MIP_HS_MASK, // ie_write_mask
generic_int_accessor_t::mask_mode_t::MIDELEG,
0 // shiftamt
);
auto hip_hie_accr = std::make_shared<generic_int_accessor_t>(
this,
MIP_HS_MASK, // read_mask
MIP_VSSIP, // ip_write_mask
MIP_HS_MASK, // ie_write_mask
generic_int_accessor_t::mask_mode_t::MIDELEG,
0 // shiftamt
);
auto vsip_vsie_accr = std::make_shared<generic_int_accessor_t>(
this,
MIP_VS_MASK, // read_mask
MIP_VSSIP, // ip_write_mask
MIP_VS_MASK, // ie_write_mask
generic_int_accessor_t::mask_mode_t::HIDELEG,
1 // shiftamt
);
auto nonvirtual_sip = std::make_shared<mip_proxy_csr_t>(proc, CSR_SIP, sip_sie_accr);
auto vsip = std::make_shared<mip_proxy_csr_t>(proc, CSR_VSIP, vsip_vsie_accr);
csrmap[CSR_VSIP] = vsip;
csrmap[CSR_SIP] = std::make_shared<virtualized_csr_t>(proc, nonvirtual_sip, vsip);
csrmap[CSR_HIP] = std::make_shared<mip_proxy_csr_t>(proc, CSR_HIP, hip_hie_accr);
csrmap[CSR_HVIP] = hvip = std::make_shared<hvip_csr_t>(proc, CSR_HVIP, 0);
auto nonvirtual_sie = std::make_shared<mie_proxy_csr_t>(proc, CSR_SIE, sip_sie_accr);
auto vsie = std::make_shared<mie_proxy_csr_t>(proc, CSR_VSIE, vsip_vsie_accr);
csrmap[CSR_VSIE] = vsie;
csrmap[CSR_SIE] = std::make_shared<virtualized_csr_t>(proc, nonvirtual_sie, vsie);
csrmap[CSR_HIE] = std::make_shared<mie_proxy_csr_t>(proc, CSR_HIE, hip_hie_accr);
csrmap[CSR_MEDELEG] = medeleg = std::make_shared<medeleg_csr_t>(proc, CSR_MEDELEG);
csrmap[CSR_MIDELEG] = mideleg = std::make_shared<mideleg_csr_t>(proc, CSR_MIDELEG);
const reg_t counteren_mask = (proc->extension_enabled_const(EXT_ZICNTR) ? 0x7UL : 0x0) | (proc->extension_enabled_const(EXT_ZIHPM) ? 0xfffffff8ULL : 0x0);
mcounteren = std::make_shared<masked_csr_t>(proc, CSR_MCOUNTEREN, counteren_mask, 0);
if (proc->extension_enabled_const('U')) csrmap[CSR_MCOUNTEREN] = mcounteren;
csrmap[CSR_SCOUNTEREN] = scounteren = std::make_shared<masked_csr_t>(proc, CSR_SCOUNTEREN, counteren_mask, 0);
nonvirtual_sepc = std::make_shared<epc_csr_t>(proc, CSR_SEPC);
csrmap[CSR_VSEPC] = vsepc = std::make_shared<epc_csr_t>(proc, CSR_VSEPC);
csrmap[CSR_SEPC] = sepc = std::make_shared<virtualized_csr_t>(proc, nonvirtual_sepc, vsepc);
nonvirtual_stval = std::make_shared<basic_csr_t>(proc, CSR_STVAL, 0);
csrmap[CSR_VSTVAL] = vstval = std::make_shared<basic_csr_t>(proc, CSR_VSTVAL, 0);
csrmap[CSR_STVAL] = stval = std::make_shared<virtualized_csr_t>(proc, nonvirtual_stval, vstval);
auto sscratch = std::make_shared<basic_csr_t>(proc, CSR_SSCRATCH, 0);
auto vsscratch = std::make_shared<basic_csr_t>(proc, CSR_VSSCRATCH, 0);
// Note: if max_isa does not include H, we don't really need this virtualized_csr_t at all (though it doesn't hurt):
csrmap[CSR_SSCRATCH] = std::make_shared<virtualized_csr_t>(proc, sscratch, vsscratch);
csrmap[CSR_VSSCRATCH] = vsscratch;
nonvirtual_stvec = std::make_shared<tvec_csr_t>(proc, CSR_STVEC);
csrmap[CSR_VSTVEC] = vstvec = std::make_shared<tvec_csr_t>(proc, CSR_VSTVEC);
csrmap[CSR_STVEC] = stvec = std::make_shared<virtualized_csr_t>(proc, nonvirtual_stvec, vstvec);
auto nonvirtual_satp = std::make_shared<satp_csr_t>(proc, CSR_SATP);
csrmap[CSR_VSATP] = vsatp = std::make_shared<base_atp_csr_t>(proc, CSR_VSATP);
csrmap[CSR_SATP] = satp = std::make_shared<virtualized_satp_csr_t>(proc, nonvirtual_satp, vsatp);
nonvirtual_scause = std::make_shared<cause_csr_t>(proc, CSR_SCAUSE);
csrmap[CSR_VSCAUSE] = vscause = std::make_shared<cause_csr_t>(proc, CSR_VSCAUSE);
csrmap[CSR_SCAUSE] = scause = std::make_shared<virtualized_csr_t>(proc, nonvirtual_scause, vscause);
csrmap[CSR_MTVAL2] = mtval2 = std::make_shared<mtval2_csr_t>(proc, CSR_MTVAL2);
csrmap[CSR_MTINST] = mtinst = std::make_shared<hypervisor_csr_t>(proc, CSR_MTINST);
csrmap[CSR_HSTATUS] = hstatus = std::make_shared<hstatus_csr_t>(proc, CSR_HSTATUS);
csrmap[CSR_HGEIE] = std::make_shared<const_csr_t>(proc, CSR_HGEIE, 0);
csrmap[CSR_HGEIP] = std::make_shared<const_csr_t>(proc, CSR_HGEIP, 0);
csrmap[CSR_HIDELEG] = hideleg = std::make_shared<hideleg_csr_t>(proc, CSR_HIDELEG, mideleg);
const reg_t hedeleg_mask =
(1 << CAUSE_MISALIGNED_FETCH) |
(1 << CAUSE_FETCH_ACCESS) |
(1 << CAUSE_ILLEGAL_INSTRUCTION) |
(1 << CAUSE_BREAKPOINT) |
(1 << CAUSE_MISALIGNED_LOAD) |
(1 << CAUSE_LOAD_ACCESS) |
(1 << CAUSE_MISALIGNED_STORE) |
(1 << CAUSE_STORE_ACCESS) |
(1 << CAUSE_USER_ECALL) |
(1 << CAUSE_FETCH_PAGE_FAULT) |
(1 << CAUSE_LOAD_PAGE_FAULT) |
(1 << CAUSE_STORE_PAGE_FAULT) |
(1 << CAUSE_SOFTWARE_CHECK_FAULT) |
(1 << CAUSE_HARDWARE_ERROR_FAULT);
csrmap[CSR_HEDELEG] = hedeleg = std::make_shared<masked_csr_t>(proc, CSR_HEDELEG, hedeleg_mask, 0);
csrmap[CSR_HCOUNTEREN] = hcounteren = std::make_shared<masked_csr_t>(proc, CSR_HCOUNTEREN, counteren_mask, 0);
htimedelta = std::make_shared<basic_csr_t>(proc, CSR_HTIMEDELTA, 0);
if (xlen == 32) {
csrmap[CSR_HTIMEDELTA] = std::make_shared<rv32_low_csr_t>(proc, CSR_HTIMEDELTA, htimedelta);
csrmap[CSR_HTIMEDELTAH] = std::make_shared<rv32_high_csr_t>(proc, CSR_HTIMEDELTAH, htimedelta);
} else {
csrmap[CSR_HTIMEDELTA] = htimedelta;
}
csrmap[CSR_HTVAL] = htval = std::make_shared<basic_csr_t>(proc, CSR_HTVAL, 0);
csrmap[CSR_HTINST] = htinst = std::make_shared<basic_csr_t>(proc, CSR_HTINST, 0);
csrmap[CSR_HGATP] = hgatp = std::make_shared<hgatp_csr_t>(proc, CSR_HGATP);
nonvirtual_sstatus = std::make_shared<sstatus_proxy_csr_t>(proc, CSR_SSTATUS, mstatus);
csrmap[CSR_VSSTATUS] = vsstatus = std::make_shared<vsstatus_csr_t>(proc, CSR_VSSTATUS);
csrmap[CSR_SSTATUS] = sstatus = std::make_shared<sstatus_csr_t>(proc, nonvirtual_sstatus, vsstatus);
csrmap[CSR_DPC] = dpc = std::make_shared<dpc_csr_t>(proc, CSR_DPC);
csrmap[CSR_DSCRATCH0] = std::make_shared<debug_mode_csr_t>(proc, CSR_DSCRATCH0);
csrmap[CSR_DSCRATCH1] = std::make_shared<debug_mode_csr_t>(proc, CSR_DSCRATCH1);
csrmap[CSR_DCSR] = dcsr = std::make_shared<dcsr_csr_t>(proc, CSR_DCSR);
csrmap[CSR_TSELECT] = tselect = std::make_shared<tselect_csr_t>(proc, CSR_TSELECT);
if (proc->get_cfg().trigger_count > 0) {
csrmap[CSR_TDATA1] = std::make_shared<tdata1_csr_t>(proc, CSR_TDATA1);
csrmap[CSR_TDATA2] = tdata2 = std::make_shared<tdata2_csr_t>(proc, CSR_TDATA2);
csrmap[CSR_TDATA3] = std::make_shared<tdata3_csr_t>(proc, CSR_TDATA3);
csrmap[CSR_TINFO] = std::make_shared<tinfo_csr_t>(proc, CSR_TINFO);
csrmap[CSR_TCONTROL] = tcontrol = std::make_shared<masked_csr_t>(proc, CSR_TCONTROL, CSR_TCONTROL_MPTE | CSR_TCONTROL_MTE, 0);
} else {
csrmap[CSR_TDATA1] = std::make_shared<const_csr_t>(proc, CSR_TDATA1, 0);
csrmap[CSR_TDATA2] = tdata2 = std::make_shared<const_csr_t>(proc, CSR_TDATA2, 0);
csrmap[CSR_TDATA3] = std::make_shared<const_csr_t>(proc, CSR_TDATA3, 0);
csrmap[CSR_TINFO] = std::make_shared<const_csr_t>(proc, CSR_TINFO, 0);
csrmap[CSR_TCONTROL] = tcontrol = std::make_shared<const_csr_t>(proc, CSR_TCONTROL, 0);
}
unsigned scontext_length = (xlen == 32 ? 16 : 32); // debug spec suggests 16-bit for RV32 and 32-bit for RV64
csrmap[CSR_SCONTEXT] = scontext = std::make_shared<masked_csr_t>(proc, CSR_SCONTEXT, (reg_t(1) << scontext_length) - 1, 0);
unsigned hcontext_length = (xlen == 32 ? 6 : 13) + (proc->extension_enabled('H') ? 1 : 0); // debug spec suggest 7-bit (6-bit) for RV32 and 14-bit (13-bit) for RV64 with (without) H extension
csrmap[CSR_HCONTEXT] = std::make_shared<masked_csr_t>(proc, CSR_HCONTEXT, (reg_t(1) << hcontext_length) - 1, 0);
csrmap[CSR_MCONTEXT] = mcontext = std::make_shared<proxy_csr_t>(proc, CSR_MCONTEXT, csrmap[CSR_HCONTEXT]);
serialized = false;
debug_mode = false;
single_step = STEP_NONE;
csrmap[CSR_MSECCFG] = mseccfg = std::make_shared<mseccfg_csr_t>(proc, CSR_MSECCFG);
for (int i = 0; i < max_pmp; ++i) {
csrmap[CSR_PMPADDR0 + i] = pmpaddr[i] = std::make_shared<pmpaddr_csr_t>(proc, CSR_PMPADDR0 + i);
}
for (int i = 0; i < max_pmp; i += xlen / 8) {
reg_t addr = CSR_PMPCFG0 + i / 4;
csrmap[addr] = std::make_shared<pmpcfg_csr_t>(proc, addr);
}
csrmap[CSR_FFLAGS] = fflags = std::make_shared<float_csr_t>(proc, CSR_FFLAGS, FSR_AEXC >> FSR_AEXC_SHIFT, 0);
csrmap[CSR_FRM] = frm = std::make_shared<float_csr_t>(proc, CSR_FRM, FSR_RD >> FSR_RD_SHIFT, 0);
assert(FSR_AEXC_SHIFT == 0); // composite_csr_t assumes fflags begins at bit 0
csrmap[CSR_FCSR] = std::make_shared<composite_csr_t>(proc, CSR_FCSR, frm, fflags, FSR_RD_SHIFT);
csrmap[CSR_SEED] = std::make_shared<seed_csr_t>(proc, CSR_SEED);
csrmap[CSR_MARCHID] = std::make_shared<const_csr_t>(proc, CSR_MARCHID, 5);
csrmap[CSR_MIMPID] = std::make_shared<const_csr_t>(proc, CSR_MIMPID, 0);
csrmap[CSR_MVENDORID] = std::make_shared<const_csr_t>(proc, CSR_MVENDORID, 0);
csrmap[CSR_MHARTID] = std::make_shared<const_csr_t>(proc, CSR_MHARTID, proc->get_id());
csrmap[CSR_MCONFIGPTR] = std::make_shared<const_csr_t>(proc, CSR_MCONFIGPTR, 0);
const reg_t menvcfg_mask = (proc->extension_enabled(EXT_ZICBOM) ? MENVCFG_CBCFE | MENVCFG_CBIE : 0) |
(proc->extension_enabled(EXT_ZICBOZ) ? MENVCFG_CBZE : 0) |
(proc->extension_enabled(EXT_SMNPM) ? MENVCFG_PMM : 0) |
(proc->extension_enabled(EXT_SVADU) ? MENVCFG_ADUE: 0) |
(proc->extension_enabled(EXT_SVPBMT) ? MENVCFG_PBMTE : 0) |
(proc->extension_enabled(EXT_SSTC) ? MENVCFG_STCE : 0) |
(proc->extension_enabled(EXT_ZICFILP) ? MENVCFG_LPE : 0) |
(proc->extension_enabled(EXT_ZICFISS) ? MENVCFG_SSE : 0) |
(proc->extension_enabled(EXT_SSDBLTRP) ? MENVCFG_DTE : 0);
menvcfg = std::make_shared<envcfg_csr_t>(proc, CSR_MENVCFG, menvcfg_mask, 0);
if (proc->extension_enabled_const('U')) {
if (xlen == 32) {
csrmap[CSR_MENVCFG] = std::make_shared<rv32_low_csr_t>(proc, CSR_MENVCFG, menvcfg);
csrmap[CSR_MENVCFGH] = std::make_shared<rv32_high_csr_t>(proc, CSR_MENVCFGH, menvcfg);
} else {
csrmap[CSR_MENVCFG] = menvcfg;
}
}
const reg_t senvcfg_mask = (proc->extension_enabled(EXT_ZICBOM) ? SENVCFG_CBCFE | SENVCFG_CBIE : 0) |
(proc->extension_enabled(EXT_ZICBOZ) ? SENVCFG_CBZE : 0) |
(proc->extension_enabled(EXT_SSNPM) ? SENVCFG_PMM : 0) |
(proc->extension_enabled(EXT_ZICFILP) ? SENVCFG_LPE : 0) |
(proc->extension_enabled(EXT_ZICFISS) ? SENVCFG_SSE : 0);
senvcfg = std::make_shared<senvcfg_csr_t>(proc, CSR_SENVCFG, senvcfg_mask, 0);
if (proc->extension_enabled_const('S'))
csrmap[CSR_SENVCFG] = senvcfg;
const reg_t henvcfg_mask = (proc->extension_enabled(EXT_ZICBOM) ? HENVCFG_CBCFE | HENVCFG_CBIE : 0) |
(proc->extension_enabled(EXT_ZICBOZ) ? HENVCFG_CBZE : 0) |
(proc->extension_enabled(EXT_SSNPM) ? HENVCFG_PMM : 0) |
(proc->extension_enabled(EXT_SVADU) ? HENVCFG_ADUE: 0) |
(proc->extension_enabled(EXT_SVPBMT) ? HENVCFG_PBMTE : 0) |
(proc->extension_enabled(EXT_SSTC) ? HENVCFG_STCE : 0) |
(proc->extension_enabled(EXT_ZICFILP) ? HENVCFG_LPE : 0) |
(proc->extension_enabled(EXT_ZICFISS) ? HENVCFG_SSE : 0) |
(proc->extension_enabled(EXT_SSDBLTRP) ? HENVCFG_DTE : 0);
henvcfg = std::make_shared<henvcfg_csr_t>(proc, CSR_HENVCFG, henvcfg_mask, 0, menvcfg);
if (proc->extension_enabled('H')) {
if (xlen == 32) {
csrmap[CSR_HENVCFG] = std::make_shared<rv32_low_csr_t>(proc, CSR_HENVCFG, henvcfg);
csrmap[CSR_HENVCFGH] = std::make_shared<rv32_high_csr_t>(proc, CSR_HENVCFGH, henvcfg);
} else {
csrmap[CSR_HENVCFG] = henvcfg;
}
}
if (proc->extension_enabled_const(EXT_SMSTATEEN)) {
const reg_t sstateen0_mask = (proc->extension_enabled(EXT_ZFINX) ? SSTATEEN0_FCSR : 0) |
(proc->extension_enabled(EXT_ZCMT) ? SSTATEEN0_JVT : 0) |
SSTATEEN0_CS;
const reg_t hstateen0_mask = sstateen0_mask | HSTATEEN0_SENVCFG | HSTATEEN_SSTATEEN;
const reg_t mstateen0_mask = hstateen0_mask | (proc->extension_enabled(EXT_SSQOSID) ? MSTATEEN0_PRIV114 : 0);
for (int i = 0; i < 4; i++) {
const reg_t mstateen_mask = i == 0 ? mstateen0_mask : MSTATEEN_HSTATEEN;
mstateen[i] = std::make_shared<masked_csr_t>(proc, CSR_MSTATEEN0 + i, mstateen_mask, 0);
if (xlen == 32) {
csrmap[CSR_MSTATEEN0 + i] = std::make_shared<rv32_low_csr_t>(proc, CSR_MSTATEEN0 + i, mstateen[i]);
csrmap[CSR_MSTATEEN0H + i] = std::make_shared<rv32_high_csr_t>(proc, CSR_MSTATEEN0H + i, mstateen[i]);
} else {
csrmap[CSR_MSTATEEN0 + i] = mstateen[i];
}
const reg_t hstateen_mask = i == 0 ? hstateen0_mask : HSTATEEN_SSTATEEN;
hstateen[i] = std::make_shared<hstateen_csr_t>(proc, CSR_HSTATEEN0 + i, hstateen_mask, 0, i);
if (xlen == 32) {
csrmap[CSR_HSTATEEN0 + i] = std::make_shared<rv32_low_csr_t>(proc, CSR_HSTATEEN0 + i, hstateen[i]);
csrmap[CSR_HSTATEEN0H + i] = std::make_shared<rv32_high_csr_t>(proc, CSR_HSTATEEN0H + i, hstateen[i]);
} else {
csrmap[CSR_HSTATEEN0 + i] = hstateen[i];
}
const reg_t sstateen_mask = i == 0 ? sstateen0_mask : 0;
csrmap[CSR_SSTATEEN0 + i] = sstateen[i] = std::make_shared<sstateen_csr_t>(proc, CSR_SSTATEEN0 + i, sstateen_mask, 0, i);
}
}
if (proc->extension_enabled_const(EXT_SMRNMI)) {
csrmap[CSR_MNSCRATCH] = std::make_shared<basic_csr_t>(proc, CSR_MNSCRATCH, 0);
csrmap[CSR_MNEPC] = mnepc = std::make_shared<epc_csr_t>(proc, CSR_MNEPC);
csrmap[CSR_MNCAUSE] = std::make_shared<const_csr_t>(proc, CSR_MNCAUSE, (reg_t)1 << (xlen - 1));
csrmap[CSR_MNSTATUS] = mnstatus = std::make_shared<mnstatus_csr_t>(proc, CSR_MNSTATUS);
}
if (proc->extension_enabled_const(EXT_SSTC)) {
stimecmp = std::make_shared<stimecmp_csr_t>(proc, CSR_STIMECMP, MIP_STIP);
vstimecmp = std::make_shared<stimecmp_csr_t>(proc, CSR_VSTIMECMP, MIP_VSTIP);
auto virtualized_stimecmp = std::make_shared<virtualized_stimecmp_csr_t>(proc, stimecmp, vstimecmp);
if (xlen == 32) {
csrmap[CSR_STIMECMP] = std::make_shared<rv32_low_csr_t>(proc, CSR_STIMECMP, virtualized_stimecmp);
csrmap[CSR_STIMECMPH] = std::make_shared<rv32_high_csr_t>(proc, CSR_STIMECMPH, virtualized_stimecmp);
csrmap[CSR_VSTIMECMP] = std::make_shared<rv32_low_csr_t>(proc, CSR_VSTIMECMP, vstimecmp);
csrmap[CSR_VSTIMECMPH] = std::make_shared<rv32_high_csr_t>(proc, CSR_VSTIMECMPH, vstimecmp);
} else {
csrmap[CSR_STIMECMP] = virtualized_stimecmp;
csrmap[CSR_VSTIMECMP] = vstimecmp;
}
}
if (proc->extension_enabled(EXT_ZCMT))
csrmap[CSR_JVT] = jvt = std::make_shared<jvt_csr_t>(proc, CSR_JVT, 0);
if (proc->extension_enabled(EXT_ZICFISS)) {
reg_t ssp_mask = -reg_t(xlen / 8);
csrmap[CSR_SSP] = ssp = std::make_shared<ssp_csr_t>(proc, CSR_SSP, ssp_mask, 0);
}
// Smcsrind / Sscsrind
sscsrind_reg_csr_t::sscsrind_reg_csr_t_p mireg[6];
sscsrind_reg_csr_t::sscsrind_reg_csr_t_p sireg[6];
sscsrind_reg_csr_t::sscsrind_reg_csr_t_p vsireg[6];
if (proc->extension_enabled_const(EXT_SMCSRIND)) {
csr_t_p miselect = std::make_shared<basic_csr_t>(proc, CSR_MISELECT, 0);
csrmap[CSR_MISELECT] = miselect;
const reg_t mireg_csrs[] = { CSR_MIREG, CSR_MIREG2, CSR_MIREG3, CSR_MIREG4, CSR_MIREG5, CSR_MIREG6 };
auto i = 0;
for (auto csr : mireg_csrs) {
csrmap[csr] = mireg[i] = std::make_shared<sscsrind_reg_csr_t>(proc, csr, miselect);
i++;
}
}
if (proc->extension_enabled_const(EXT_SSCSRIND)) {
csr_t_p vsiselect = std::make_shared<basic_csr_t>(proc, CSR_VSISELECT, 0);
csrmap[CSR_VSISELECT] = vsiselect;
csr_t_p siselect = std::make_shared<basic_csr_t>(proc, CSR_SISELECT, 0);
csrmap[CSR_SISELECT] = std::make_shared<virtualized_csr_t>(proc, siselect, vsiselect);
const reg_t vsireg_csrs[] = { CSR_VSIREG, CSR_VSIREG2, CSR_VSIREG3, CSR_VSIREG4, CSR_VSIREG5, CSR_VSIREG6 };
auto i = 0;
for (auto csr : vsireg_csrs) {
csrmap[csr] = vsireg[i] = std::make_shared<sscsrind_reg_csr_t>(proc, csr, vsiselect);
i++;
}
const reg_t sireg_csrs[] = { CSR_SIREG, CSR_SIREG2, CSR_SIREG3, CSR_SIREG4, CSR_SIREG5, CSR_SIREG6 };
i = 0;
for (auto csr : sireg_csrs) {
sireg[i] = std::make_shared<sscsrind_reg_csr_t>(proc, csr, siselect);
csrmap[csr] = std::make_shared<virtualized_indirect_csr_t>(proc, sireg[i], vsireg[i]);
i++;
}
}
if (smcntrpmf_enabled) {
if (xlen == 32) {
csrmap[CSR_MCYCLECFG] = std::make_shared<rv32_low_csr_t>(proc, CSR_MCYCLECFG, mcyclecfg);
csrmap[CSR_MCYCLECFGH] = std::make_shared<rv32_high_csr_t>(proc, CSR_MCYCLECFGH, mcyclecfg);
csrmap[CSR_MINSTRETCFG] = std::make_shared<rv32_low_csr_t>(proc, CSR_MINSTRETCFG, minstretcfg);
csrmap[CSR_MINSTRETCFGH] = std::make_shared<rv32_high_csr_t>(proc, CSR_MINSTRETCFGH, minstretcfg);
} else {
csrmap[CSR_MCYCLECFG] = mcyclecfg;
csrmap[CSR_MINSTRETCFG] = minstretcfg;
}
}
if (proc->extension_enabled_const(EXT_SSQOSID)) {
const reg_t srmcfg_mask = SRMCFG_MCID | SRMCFG_RCID;
srmcfg = std::make_shared<srmcfg_csr_t>(proc, CSR_SRMCFG, srmcfg_mask, 0);
csrmap[CSR_SRMCFG] = srmcfg;
}
serialized = false;
log_reg_write.clear();
log_mem_read.clear();
log_mem_write.clear();
@ -554,6 +158,8 @@ void state_t::reset(processor_t* const proc, reg_t max_isa)
last_inst_flen = 0;
elp = elp_t::NO_LP_EXPECTED;
csr_init(proc, max_isa);
}
void processor_t::set_debug(bool value)

3
riscv/processor.h
View File

@ -190,6 +190,9 @@ struct state_t
int last_inst_flen;
elp_t elp;
private:
void csr_init(processor_t* const proc, reg_t max_isa);
};
class opcode_cache_entry_t {

1
riscv/riscv.mk.in
View File

@ -68,6 +68,7 @@ riscv_srcs = \
remote_bitbang.cc \
jtag_dtm.cc \
csrs.cc \
csr_init.cc \
triggers.cc \
vector_unit.cc \
socketif.cc \

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