# define D(x)
#endif
-///////////////////////// debug_module_data_t
-
-debug_module_data_t::debug_module_data_t()
-{
- memset(data, 0, sizeof(data));
-}
-
-bool debug_module_data_t::load(reg_t addr, size_t len, uint8_t* bytes)
-{
- D(fprintf(stderr, "debug_module_data_t load 0x%lx bytes at 0x%lx\n", len,
- addr));
-
- if (addr + len < sizeof(data)) {
- memcpy(bytes, data + addr, len);
- return true;
- }
-
- fprintf(stderr, "ERROR: invalid load from debug_module_data_t: %zd bytes at 0x%016"
- PRIx64 "\n", len, addr);
-
- return false;
-}
-
-bool debug_module_data_t::store(reg_t addr, size_t len, const uint8_t* bytes)
-{
- D(fprintf(stderr, "debug_module_data_t store 0x%lx bytes at 0x%lx\n", len,
- addr));
-
- if (addr + len < sizeof(data)) {
- memcpy(data + addr, bytes, len);
- return true;
- }
-
- fprintf(stderr, "ERROR: invalid store to debug_module_data_t: %zd bytes at 0x%016"
- PRIx64 "\n", len, addr);
- return false;
-}
+///////////////////////// debug_module_t
-uint32_t debug_module_data_t::read32(reg_t addr) const
+debug_module_t::debug_module_t(sim_t *sim) : sim(sim),
+ next_action(jal(ZERO, 0)),
+ action_executed(false)
{
- assert(addr + 4 <= sizeof(data));
- return data[addr] |
- (data[addr + 1] << 8) |
- (data[addr + 2] << 16) |
- (data[addr + 3] << 24);
-}
+ dmcontrol = {0};
-void debug_module_data_t::write32(reg_t addr, uint32_t value)
-{
- fprintf(stderr, "debug_module_data_t::write32(0x%lx, 0x%x)\n", addr, value);
- assert(addr + 4 <= sizeof(data));
- data[addr] = value & 0xff;
- data[addr + 1] = (value >> 8) & 0xff;
- data[addr + 2] = (value >> 16) & 0xff;
- data[addr + 3] = (value >> 24) & 0xff;
-}
+ dmstatus = {0};
+ dmstatus.authenticated = 1;
+ dmstatus.versionlo = 2;
-///////////////////////// debug_module_t
+ abstractcs = {0};
+ abstractcs.progsize = progsize;
-debug_module_t::debug_module_t(sim_t *sim) : sim(sim)
-{
- dmcontrol = {0};
- dmcontrol.version = 1;
+ abstractauto = {0};
for (unsigned i = 0; i < DEBUG_ROM_ENTRY_SIZE / 4; i++) {
write32(debug_rom_entry, i, jal(ZERO, 0));
halted[i] = false;
}
- for (unsigned i = 0; i < progsize; i++) {
- ibuf[i] = 0;
- }
-
+ memset(program_buffer, 0, sizeof(program_buffer));
}
void debug_module_t::reset()
}
dmcontrol = {0};
- dmcontrol.authenticated = 1;
- dmcontrol.version = 1;
- dmcontrol.authtype = dmcontrol.AUTHTYPE_NOAUTH;
+
+ dmstatus = {0};
+ dmstatus.authenticated = 1;
+ dmstatus.versionlo = 2;
abstractcs = {0};
- abstractcs.datacount = sizeof(dmdata.data) / 4;
+ abstractcs.datacount = sizeof(dmdata) / 4;
+ abstractcs.progsize = progsize;
+
+ abstractauto = {0};
}
void debug_module_t::add_device(bus_t *bus) {
bus->add_device(DEBUG_START, this);
- bus->add_device(DEBUG_EXCHANGE, &dmdata);
}
bool debug_module_t::load(reg_t addr, size_t len, uint8_t* bytes)
{
- D(fprintf(stderr, "load 0x%lx bytes at 0x%lx\n",
- len, addr));
addr = DEBUG_START + addr;
if (addr >= DEBUG_ROM_ENTRY &&
addr < DEBUG_ROM_ENTRY + DEBUG_ROM_ENTRY_SIZE) {
- halted[(addr - DEBUG_ROM_ENTRY) / 4] = true;
- memcpy(bytes, debug_rom_entry + addr - DEBUG_ROM_ENTRY, len);
if (read32(debug_rom_entry, dmcontrol.hartsel) == jal(ZERO, 0)) {
// We're here in an infinite loop. That means that whatever abstract
// command has complete.
abstractcs.busy = false;
}
+
+ action_executed = true;
+
+ halted[(addr - DEBUG_ROM_ENTRY) / 4] = true;
+ memcpy(bytes, debug_rom_entry + addr - DEBUG_ROM_ENTRY, len);
return true;
}
- // Restore the jump-to-self loop.
- write32(debug_rom_entry, dmcontrol.hartsel, jal(ZERO, 0));
+ if (action_executed) {
+ // Restore the jump-to-self loop.
+ write32(debug_rom_entry, dmcontrol.hartsel, next_action);
+ next_action = jal(ZERO, 0);
+ action_executed = false;
+ }
if (addr >= DEBUG_ROM_CODE &&
addr < DEBUG_ROM_CODE + DEBUG_ROM_CODE_SIZE) {
+
+ if (read32(debug_rom_code, 0) == dret()) {
+ abstractcs.busy = false;
+ halted[dmcontrol.hartsel] = false;
+ resumeack[dmcontrol.hartsel] = true;
+ }
+
+ fprintf(stderr, "returning the debug rom code.\n");
memcpy(bytes, debug_rom_code + addr - DEBUG_ROM_CODE, len);
return true;
}
+ if (addr >= DEBUG_DATA_START && addr < DEBUG_DATA_END) {
+ memcpy(bytes, dmdata + addr - DEBUG_DATA_START, len);
+ return true;
+ }
+
+ if (addr >= DEBUG_PROGBUF_START && addr < DEBUG_PROGBUF_END) {
+ memcpy(bytes, program_buffer + addr - DEBUG_PROGBUF_START, len);
+ return true;
+ }
+
if (addr >= DEBUG_ROM_EXCEPTION &&
addr < DEBUG_ROM_EXCEPTION + DEBUG_ROM_EXCEPTION_SIZE) {
memcpy(bytes, debug_rom_exception + addr - DEBUG_ROM_EXCEPTION, len);
- if (abstractcs.cmderr == abstractcs.CMDERR_NONE) {
- abstractcs.cmderr = abstractcs.CMDERR_EXCEPTION;
+ if (abstractcs.cmderr == CMDERR_NONE) {
+ abstractcs.cmderr = CMDERR_EXCEPTION;
}
return true;
}
bool debug_module_t::store(reg_t addr, size_t len, const uint8_t* bytes)
{
+
addr = DEBUG_START + addr;
+
+ if (addr >= DEBUG_DATA_START && addr < DEBUG_DATA_END) {
+ memcpy(dmdata + addr - DEBUG_DATA_START, bytes, len);
+ return true;
+ }
+
+ if (addr >= DEBUG_PROGBUF_START && addr < DEBUG_PROGBUF_END) {
+ memcpy(program_buffer + addr - DEBUG_PROGBUF_START, bytes, len);
+ return true;
+ }
fprintf(stderr, "ERROR: invalid store to debug module: %zd bytes at 0x%016"
PRIx64 "\n", len, addr);
uint32_t result = 0;
D(fprintf(stderr, "dmi_read(0x%x) -> ", address));
if (address >= DMI_DATA0 && address < DMI_DATA0 + abstractcs.datacount) {
- result = dmdata.read32(4 * (address - DMI_DATA0));
- } else if (address >= DMI_IBUF0 && address < DMI_IBUF0 + progsize) {
- result = ibuf[address - DMI_IBUF0];
+ unsigned i = address - DMI_DATA0;
+ result = read32(dmdata, address - DMI_DATA0);
+
+ if (abstractcs.busy && abstractcs.cmderr == CMDERR_NONE) {
+ abstractcs.cmderr = CMDERR_BUSY;
+ }
+
+ if ((abstractauto.autoexecdata >> i) & 1)
+ perform_abstract_command();
+ } else if (address >= DMI_PROGBUF0 && address < DMI_PROGBUF0 + progsize) {
+ // TODO : Autoexec progbuf.
+ result = read32(program_buffer, address - DMI_PROGBUF0);
} else {
switch (address) {
case DMI_DMCONTROL:
{
processor_t *proc = current_proc();
+ if (proc)
+ dmcontrol.haltreq = proc->halt_request;
+
+ result = set_field(result, DMI_DMCONTROL_HALTREQ, dmcontrol.haltreq);
+ result = set_field(result, DMI_DMCONTROL_RESUMEREQ, dmcontrol.resumereq);
+ result = set_field(result, DMI_DMCONTROL_HARTSEL, dmcontrol.hartsel);
+ result = set_field(result, DMI_DMCONTROL_HARTRESET, dmcontrol.hartreset);
+ result = set_field(result, DMI_DMCONTROL_NDMRESET, dmcontrol.ndmreset);
+ result = set_field(result, DMI_DMCONTROL_DMACTIVE, dmcontrol.dmactive);
+ }
+ break;
+ case DMI_DMSTATUS:
+ {
+ processor_t *proc = current_proc();
+
+ dmstatus.allnonexistant = false;
+ dmstatus.allunavail = false;
+ dmstatus.allrunning = false;
+ dmstatus.allhalted = false;
+ dmstatus.allresumeack = false;
if (proc) {
if (halted[dmcontrol.hartsel]) {
- dmcontrol.hartstatus = dmcontrol.HARTSTATUS_HALTED;
+ dmstatus.allhalted = true;
} else {
- dmcontrol.hartstatus = dmcontrol.HARTSTATUS_RUNNING;
+ dmstatus.allrunning = true;
}
- dmcontrol.haltreq = proc->halt_request;
} else {
- dmcontrol.hartstatus = dmcontrol.HARTSTATUS_NOTEXIST;
+ dmstatus.allnonexistant = true;
}
- result = set_field(result, DMI_DMCONTROL_HALTREQ, dmcontrol.haltreq);
- result = set_field(result, DMI_DMCONTROL_RESET, dmcontrol.reset);
- result = set_field(result, DMI_DMCONTROL_DMACTIVE, dmcontrol.dmactive);
- result = set_field(result, DMI_DMCONTROL_HARTSTATUS, dmcontrol.hartstatus);
- result = set_field(result, DMI_DMCONTROL_HARTSEL, dmcontrol.hartsel);
- result = set_field(result, DMI_DMCONTROL_AUTHENTICATED, dmcontrol.authenticated);
- result = set_field(result, DMI_DMCONTROL_AUTHBUSY, dmcontrol.authbusy);
- result = set_field(result, DMI_DMCONTROL_AUTHTYPE, dmcontrol.authtype);
- result = set_field(result, DMI_DMCONTROL_VERSION, dmcontrol.version);
+ dmstatus.anynonexistant = dmstatus.allnonexistant;
+ dmstatus.anyunavail = dmstatus.allunavail;
+ dmstatus.anyrunning = dmstatus.allrunning;
+ dmstatus.anyhalted = dmstatus.allhalted;
+ if (proc) {
+ if (resumeack[dmcontrol.hartsel]) {
+ dmstatus.allresumeack = true;
+ } else {
+ dmstatus.allresumeack = false;
+ }
+ } else {
+ dmstatus.allresumeack = false;
+ }
+
+ result = set_field(result, DMI_DMSTATUS_ALLNONEXISTENT, dmstatus.allnonexistant);
+ result = set_field(result, DMI_DMSTATUS_ALLUNAVAIL, dmstatus.allunavail);
+ result = set_field(result, DMI_DMSTATUS_ALLRUNNING, dmstatus.allrunning);
+ result = set_field(result, DMI_DMSTATUS_ALLHALTED, dmstatus.allhalted);
+ result = set_field(result, DMI_DMSTATUS_ALLRESUMEACK, dmstatus.allresumeack);
+ result = set_field(result, DMI_DMSTATUS_ANYNONEXISTENT, dmstatus.anynonexistant);
+ result = set_field(result, DMI_DMSTATUS_ANYUNAVAIL, dmstatus.anyunavail);
+ result = set_field(result, DMI_DMSTATUS_ANYRUNNING, dmstatus.anyrunning);
+ result = set_field(result, DMI_DMSTATUS_ANYHALTED, dmstatus.anyhalted);
+ result = set_field(result, DMI_DMSTATUS_ANYRESUMEACK, dmstatus.anyresumeack);
+ result = set_field(result, DMI_DMSTATUS_AUTHENTICATED, dmstatus.authenticated);
+ result = set_field(result, DMI_DMSTATUS_AUTHBUSY, dmstatus.authbusy);
+ result = set_field(result, DMI_DMSTATUS_VERSIONHI, dmstatus.versionhi);
+ result = set_field(result, DMI_DMSTATUS_VERSIONLO, dmstatus.versionlo);
}
- break;
+ break;
case DMI_ABSTRACTCS:
- result = set_field(result, DMI_ABSTRACTCS_AUTOEXEC7, abstractcs.autoexec7);
- result = set_field(result, DMI_ABSTRACTCS_AUTOEXEC6, abstractcs.autoexec6);
- result = set_field(result, DMI_ABSTRACTCS_AUTOEXEC5, abstractcs.autoexec5);
- result = set_field(result, DMI_ABSTRACTCS_AUTOEXEC4, abstractcs.autoexec4);
- result = set_field(result, DMI_ABSTRACTCS_AUTOEXEC3, abstractcs.autoexec3);
- result = set_field(result, DMI_ABSTRACTCS_AUTOEXEC2, abstractcs.autoexec2);
- result = set_field(result, DMI_ABSTRACTCS_AUTOEXEC1, abstractcs.autoexec1);
- result = set_field(result, DMI_ABSTRACTCS_AUTOEXEC0, abstractcs.autoexec0);
result = set_field(result, DMI_ABSTRACTCS_CMDERR, abstractcs.cmderr);
result = set_field(result, DMI_ABSTRACTCS_BUSY, abstractcs.busy);
result = set_field(result, DMI_ABSTRACTCS_DATACOUNT, abstractcs.datacount);
+ result = set_field(result, DMI_ABSTRACTCS_PROGSIZE, abstractcs.progsize);
break;
- case DMI_ACCESSCS:
- result = progsize << DMI_ACCESSCS_PROGSIZE_OFFSET;
+ case DMI_ABSTRACTAUTO:
+ result = set_field(result, DMI_ABSTRACTAUTO_AUTOEXECPROGBUF, abstractauto.autoexecprogbuf);
+ result = set_field(result, DMI_ABSTRACTAUTO_AUTOEXECDATA, abstractauto.autoexecdata);
break;
case DMI_COMMAND:
result = 0;
break;
+ case DMI_HARTINFO:
+ result = set_field(result, DMI_HARTINFO_NSCRATCH, 1);
+ result = set_field(result, DMI_HARTINFO_DATAACCESS, 1);
+ result = set_field(result, DMI_HARTINFO_DATASIZE, abstractcs.datacount);
+ result = set_field(result, DMI_HARTINFO_DATAADDR, DEBUG_DATA_START);
+ break;
default:
- D(fprintf(stderr, "error\n"));
+ result = 0;
+ D(fprintf(stderr, "Unexpected. Returning Error."));
return false;
}
}
return true;
}
-bool debug_module_t::perform_abstract_command(uint32_t command)
+bool debug_module_t::perform_abstract_command()
{
- if (abstractcs.cmderr != abstractcs.CMDERR_NONE)
+ if (abstractcs.cmderr != CMDERR_NONE)
return true;
if (abstractcs.busy) {
- abstractcs.cmderr = abstractcs.CMDERR_BUSY;
+ abstractcs.cmderr = CMDERR_BUSY;
return true;
}
unsigned regno = get_field(command, AC_ACCESS_REGISTER_REGNO);
if (regno < 0x1000 || regno >= 0x1020) {
- abstractcs.cmderr = abstractcs.CMDERR_NOTSUP;
+ abstractcs.cmderr = CMDERR_NOTSUP;
return true;
}
unsigned regnum = regno - 0x1000;
if (!halted[dmcontrol.hartsel]) {
- abstractcs.cmderr = abstractcs.CMDERR_HALTRESUME;
+ abstractcs.cmderr = CMDERR_HALTRESUME;
return true;
}
- switch (size) {
+ if (get_field(command, AC_ACCESS_REGISTER_TRANSFER)) {
+ switch (size) {
case 2:
if (write)
- write32(debug_rom_code, 0, lw(regnum, ZERO, DEBUG_EXCHANGE));
+ write32(debug_rom_code, 0, lw(regnum, ZERO, DEBUG_DATA_START));
else
- write32(debug_rom_code, 0, sw(regnum, ZERO, DEBUG_EXCHANGE));
+ write32(debug_rom_code, 0, sw(regnum, ZERO, DEBUG_DATA_START));
break;
case 3:
if (write)
- write32(debug_rom_code, 0, ld(regnum, ZERO, DEBUG_EXCHANGE));
+ write32(debug_rom_code, 0, ld(regnum, ZERO, DEBUG_DATA_START));
else
- write32(debug_rom_code, 0, sd(regnum, ZERO, DEBUG_EXCHANGE));
- break;
- /*
- case 4:
- if (write)
- write32(debug_rom_code, 0, lq(regnum, ZERO, DEBUG_EXCHANGE));
- else
- write32(debug_rom_code, 0, sq(regnum, ZERO, DEBUG_EXCHANGE));
+ write32(debug_rom_code, 0, sd(regnum, ZERO, DEBUG_DATA_START));
break;
+ /*
+ case 4:
+ if (write)
+ write32(debug_rom_code, 0, lq(regnum, ZERO, DEBUG_DATA_START));
+ else
+ write32(debug_rom_code, 0, sq(regnum, ZERO, DEBUG_DATA_START));
+ break;
*/
default:
- abstractcs.cmderr = abstractcs.CMDERR_NOTSUP;
+ abstractcs.cmderr = CMDERR_NOTSUP;
return true;
+ }
+ } else {
+ // Should be a NOP. Store DEBUG_DATA to x0.
+ write32(debug_rom_code, 0, sw(ZERO, ZERO, DEBUG_DATA_START));
+ }
+
+ if (get_field(command, AC_ACCESS_REGISTER_POSTEXEC)) {
+ write32(debug_rom_code, 1, jal(ZERO, DEBUG_PROGBUF_START - DEBUG_ROM_CODE - 4));
+ } else {
+ write32(debug_rom_code, 1, ebreak());
}
- write32(debug_rom_code, 1, ebreak());
+
write32(debug_rom_entry, dmcontrol.hartsel,
- jal(ZERO, DEBUG_ROM_CODE - (DEBUG_ROM_ENTRY + 4 * dmcontrol.hartsel)));
+ jal(ZERO, DEBUG_ROM_CODE - (DEBUG_ROM_ENTRY + 4 * dmcontrol.hartsel)));
+
write32(debug_rom_exception, dmcontrol.hartsel,
jal(ZERO, (DEBUG_ROM_ENTRY + 4 * dmcontrol.hartsel) - DEBUG_ROM_EXCEPTION));
abstractcs.busy = true;
} else {
- abstractcs.cmderr = abstractcs.CMDERR_NOTSUP;
+ abstractcs.cmderr = CMDERR_NOTSUP;
}
return true;
}
{
D(fprintf(stderr, "dmi_write(0x%x, 0x%x)\n", address, value));
if (address >= DMI_DATA0 && address < DMI_DATA0 + abstractcs.datacount) {
- dmdata.write32(4 * (address - DMI_DATA0), value);
+ unsigned i = address - DMI_DATA0;
+ write32(dmdata, address - DMI_DATA0, value);
+
+ if (abstractcs.busy && abstractcs.cmderr == CMDERR_NONE) {
+ abstractcs.cmderr = CMDERR_BUSY;
+ }
+
+ if ((abstractauto.autoexecdata >> i) & 1)
+ perform_abstract_command();
return true;
- } else if (address >= DMI_IBUF0 && address < DMI_IBUF0 + progsize) {
- ibuf[address - DMI_IBUF0] = value;
+
+ } else if (address >= DMI_PROGBUF0 && address < DMI_PROGBUF0 + progsize) {
+ write32(program_buffer, address - DMI_PROGBUF0, value);
return true;
} else {
switch (address) {
dmcontrol.dmactive = get_field(value, DMI_DMCONTROL_DMACTIVE);
if (dmcontrol.dmactive) {
dmcontrol.haltreq = get_field(value, DMI_DMCONTROL_HALTREQ);
- dmcontrol.reset = get_field(value, DMI_DMCONTROL_RESET);
+ dmcontrol.resumereq = get_field(value, DMI_DMCONTROL_RESUMEREQ);
+ dmcontrol.ndmreset = get_field(value, DMI_DMCONTROL_NDMRESET);
dmcontrol.hartsel = get_field(value, DMI_DMCONTROL_HARTSEL);
} else {
reset();
processor_t *proc = current_proc();
if (proc) {
proc->halt_request = dmcontrol.haltreq;
+ if (dmcontrol.resumereq) {
+ write32(debug_rom_code, 0, dret());
+ write32(debug_rom_entry, dmcontrol.hartsel,
+ jal(ZERO, DEBUG_ROM_CODE - (DEBUG_ROM_ENTRY + 4 * dmcontrol.hartsel)));
+ abstractcs.busy = true;
+ resumeack[dmcontrol.hartsel] = false;
+ }
}
}
return true;
case DMI_COMMAND:
- return perform_abstract_command(value);
+ command = value;
+ return perform_abstract_command();
case DMI_ABSTRACTCS:
- abstractcs.autoexec7 = get_field(value, DMI_ABSTRACTCS_AUTOEXEC7);
- abstractcs.autoexec6 = get_field(value, DMI_ABSTRACTCS_AUTOEXEC6);
- abstractcs.autoexec5 = get_field(value, DMI_ABSTRACTCS_AUTOEXEC5);
- abstractcs.autoexec4 = get_field(value, DMI_ABSTRACTCS_AUTOEXEC4);
- abstractcs.autoexec3 = get_field(value, DMI_ABSTRACTCS_AUTOEXEC3);
- abstractcs.autoexec2 = get_field(value, DMI_ABSTRACTCS_AUTOEXEC2);
- abstractcs.autoexec1 = get_field(value, DMI_ABSTRACTCS_AUTOEXEC1);
- abstractcs.autoexec0 = get_field(value, DMI_ABSTRACTCS_AUTOEXEC0);
- if (get_field(value, DMI_ABSTRACTCS_CMDERR) == abstractcs.CMDERR_NONE) {
- abstractcs.cmderr = abstractcs.CMDERR_NONE;
- }
+ abstractcs.cmderr = (cmderr_t) (((uint32_t) (abstractcs.cmderr)) & (~(uint32_t)(get_field(value, DMI_ABSTRACTCS_CMDERR))));
+ return true;
+
+ case DMI_ABSTRACTAUTO:
+ abstractauto.autoexecprogbuf = get_field(value, DMI_ABSTRACTAUTO_AUTOEXECPROGBUF);
+ abstractauto.autoexecdata = get_field(value, DMI_ABSTRACTAUTO_AUTOEXECDATA);
break;
}
}
projects / riscv-isa-sim.git / blobdiff