#include "mmu.h"
#include "debug_rom/debug_rom.h"
+#include "debug_rom/debug_rom_defines.h"
#if 1
# define D(x) x
# define D(x)
#endif
-///////////////////////// debug_module_data_t
-
-debug_module_data_t::debug_module_data_t()
-{
- memset(data, 0, sizeof(data));
-}
+///////////////////////// debug_module_t
-bool debug_module_data_t::load(reg_t addr, size_t len, uint8_t* bytes)
+debug_module_t::debug_module_t(sim_t *sim, unsigned progbufsize, unsigned max_bus_master_bits) :
+ progbufsize(progbufsize),
+ program_buffer_bytes(4 + 4*progbufsize),
+ max_bus_master_bits(max_bus_master_bits),
+ debug_progbuf_start(debug_data_start - program_buffer_bytes),
+ debug_abstract_start(debug_progbuf_start - debug_abstract_size*4),
+ sim(sim)
{
- D(fprintf(stderr, "debug_module_data_t load 0x%lx bytes at 0x%lx\n", len,
- addr));
+ D(fprintf(stderr, "debug_data_start=0x%x\n", debug_data_start));
+ D(fprintf(stderr, "debug_progbuf_start=0x%x\n", debug_progbuf_start));
+ D(fprintf(stderr, "debug_abstract_start=0x%x\n", debug_abstract_start));
- 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;
-}
+ program_buffer = new uint8_t[program_buffer_bytes];
-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));
+ memset(halted, 0, sizeof(halted));
+ memset(debug_rom_flags, 0, sizeof(debug_rom_flags));
+ memset(resumeack, 0, sizeof(resumeack));
+ memset(program_buffer, 0, program_buffer_bytes);
+ program_buffer[4*progbufsize] = ebreak();
+ program_buffer[4*progbufsize+1] = ebreak() >> 8;
+ program_buffer[4*progbufsize+2] = ebreak() >> 16;
+ program_buffer[4*progbufsize+3] = ebreak() >> 24;
+ memset(dmdata, 0, sizeof(dmdata));
- if (addr + len < sizeof(data)) {
- memcpy(data + addr, bytes, len);
- return true;
- }
+ write32(debug_rom_whereto, 0,
+ jal(ZERO, debug_abstract_start - DEBUG_ROM_WHERETO));
- fprintf(stderr, "ERROR: invalid store to debug_module_data_t: %zd bytes at 0x%016"
- PRIx64 "\n", len, addr);
- return false;
-}
+ memset(debug_abstract, 0, sizeof(debug_abstract));
-uint32_t debug_module_data_t::read32(reg_t addr) const
-{
- assert(addr + 4 <= sizeof(data));
- return data[addr] |
- (data[addr + 1] << 8) |
- (data[addr + 2] << 16) |
- (data[addr + 3] << 24);
+ reset();
}
-void debug_module_data_t::write32(reg_t addr, uint32_t value)
+debug_module_t::~debug_module_t()
{
- 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;
-}
-
-///////////////////////// debug_module_t
-
-debug_module_t::debug_module_t(sim_t *sim) : sim(sim)
-{
- dmcontrol = {0};
- dmcontrol.version = 1;
-
- 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;
- }
-
+ delete[] program_buffer;
}
void debug_module_t::reset()
}
dmcontrol = {0};
- dmcontrol.authenticated = 1;
- dmcontrol.version = 1;
- dmcontrol.authtype = dmcontrol.AUTHTYPE_NOAUTH;
+
+ dmstatus = {0};
+ dmstatus.impebreak = true;
+ dmstatus.authenticated = 1;
+ dmstatus.version = 2;
abstractcs = {0};
- abstractcs.datacount = sizeof(dmdata.data) / 4;
+ abstractcs.datacount = sizeof(dmdata) / 4;
+ abstractcs.progbufsize = progbufsize;
+
+ abstractauto = {0};
+
+ sbcs = {0};
+ if (max_bus_master_bits > 0) {
+ sbcs.version = 1;
+ sbcs.asize = sizeof(reg_t) * 8;
+ }
+ if (max_bus_master_bits >= 64)
+ sbcs.access64 = true;
+ if (max_bus_master_bits >= 32)
+ sbcs.access32 = true;
+ if (max_bus_master_bits >= 16)
+ sbcs.access16 = true;
+ if (max_bus_master_bits >= 8)
+ sbcs.access8 = true;
}
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;
- }
+ (addr + len) <= (DEBUG_ROM_ENTRY + debug_rom_raw_len)) {
+ memcpy(bytes, debug_rom_raw + addr - DEBUG_ROM_ENTRY, len);
return true;
}
- // Restore the jump-to-self loop.
- write32(debug_rom_entry, dmcontrol.hartsel, jal(ZERO, 0));
+ if (addr >= DEBUG_ROM_WHERETO && (addr + len) <= (DEBUG_ROM_WHERETO + 4)) {
+ memcpy(bytes, debug_rom_whereto + addr - DEBUG_ROM_WHERETO, len);
+ return true;
+ }
- if (addr >= DEBUG_ROM_CODE &&
- addr < DEBUG_ROM_CODE + DEBUG_ROM_CODE_SIZE) {
- memcpy(bytes, debug_rom_code + addr - DEBUG_ROM_CODE, len);
+ if (addr >= DEBUG_ROM_FLAGS && ((addr + len) <= DEBUG_ROM_FLAGS + 1024)) {
+ memcpy(bytes, debug_rom_flags + addr - DEBUG_ROM_FLAGS, 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 (addr >= debug_abstract_start && ((addr + len) <= (debug_abstract_start + sizeof(debug_abstract)))) {
+ memcpy(bytes, debug_abstract + addr - debug_abstract_start, len);
+ return true;
+ }
+
+ if (addr >= debug_data_start && (addr + len) <= (debug_data_start + sizeof(dmdata))) {
+ memcpy(bytes, dmdata + addr - debug_data_start, len);
+ return true;
+ }
+
+ if (addr >= debug_progbuf_start && ((addr + len) <= (debug_progbuf_start + program_buffer_bytes))) {
+ memcpy(bytes, program_buffer + addr - debug_progbuf_start, len);
return true;
}
bool debug_module_t::store(reg_t addr, size_t len, const uint8_t* bytes)
{
+ D(
+ switch (len) {
+ case 4:
+ fprintf(stderr, "store(addr=0x%lx, len=%d, bytes=0x%08x); "
+ "hartsel=0x%x\n", addr, (unsigned) len, *(uint32_t *) bytes,
+ dmcontrol.hartsel);
+ break;
+ default:
+ fprintf(stderr, "store(addr=0x%lx, len=%d, bytes=...); "
+ "hartsel=0x%x\n", addr, (unsigned) len, dmcontrol.hartsel);
+ break;
+ }
+ );
+
+ uint8_t id_bytes[4];
+ uint32_t id = 0;
+ if (len == 4) {
+ memcpy(id_bytes, bytes, 4);
+ id = read32(id_bytes, 0);
+ }
+
addr = DEBUG_START + addr;
+ if (addr >= debug_data_start && (addr + len) <= (debug_data_start + sizeof(dmdata))) {
+ memcpy(dmdata + addr - debug_data_start, bytes, len);
+ return true;
+ }
+
+ if (addr >= debug_progbuf_start && ((addr + len) <= (debug_progbuf_start + program_buffer_bytes))) {
+ memcpy(program_buffer + addr - debug_progbuf_start, bytes, len);
+
+ return true;
+ }
+
+ if (addr == DEBUG_ROM_HALTED) {
+ assert (len == 4);
+ halted[id] = true;
+ if (dmcontrol.hartsel == id) {
+ if (0 == (debug_rom_flags[id] & (1 << DEBUG_ROM_FLAG_GO))){
+ if (dmcontrol.hartsel == id) {
+ abstractcs.busy = false;
+ }
+ }
+ }
+ return true;
+ }
+
+ if (addr == DEBUG_ROM_GOING) {
+ debug_rom_flags[dmcontrol.hartsel] &= ~(1 << DEBUG_ROM_FLAG_GO);
+ return true;
+ }
+
+ if (addr == DEBUG_ROM_RESUMING) {
+ assert (len == 4);
+ halted[id] = false;
+ resumeack[id] = true;
+ debug_rom_flags[id] &= ~(1 << DEBUG_ROM_FLAG_RESUME);
+ return true;
+ }
+
+ if (addr == DEBUG_ROM_EXCEPTION) {
+ if (abstractcs.cmderr == CMDERR_NONE) {
+ abstractcs.cmderr = CMDERR_EXCEPTION;
+ }
+ return true;
+ }
+
fprintf(stderr, "ERROR: invalid store to debug module: %zd bytes at 0x%016"
PRIx64 "\n", len, addr);
return false;
return proc;
}
+unsigned debug_module_t::sb_access_bits()
+{
+ return 8 << sbcs.sbaccess;
+}
+
+void debug_module_t::sb_autoincrement()
+{
+ if (!sbcs.autoincrement || !max_bus_master_bits)
+ return;
+
+ uint64_t value = sbaddress[0] + sb_access_bits() / 8;
+ sbaddress[0] = value;
+ uint32_t carry = value >> 32;
+
+ value = sbaddress[1] + carry;
+ sbaddress[1] = value;
+ carry = value >> 32;
+
+ value = sbaddress[2] + carry;
+ sbaddress[2] = value;
+ carry = value >> 32;
+
+ sbaddress[3] += carry;
+}
+
+void debug_module_t::sb_read()
+{
+ reg_t address = ((uint64_t) sbaddress[1] << 32) | sbaddress[0];
+ try {
+ if (sbcs.sbaccess == 0 && max_bus_master_bits >= 8) {
+ sbdata[0] = sim->debug_mmu->load_uint8(address);
+ } else if (sbcs.sbaccess == 1 && max_bus_master_bits >= 16) {
+ sbdata[0] = sim->debug_mmu->load_uint16(address);
+ } else if (sbcs.sbaccess == 2 && max_bus_master_bits >= 32) {
+ sbdata[0] = sim->debug_mmu->load_uint32(address);
+ } else if (sbcs.sbaccess == 3 && max_bus_master_bits >= 64) {
+ uint64_t value = sim->debug_mmu->load_uint32(address);
+ sbdata[0] = value;
+ sbdata[1] = value >> 32;
+ } else {
+ sbcs.error = 3;
+ }
+ } catch (trap_load_access_fault& t) {
+ sbcs.error = 2;
+ }
+}
+
+void debug_module_t::sb_write()
+{
+ reg_t address = ((uint64_t) sbaddress[1] << 32) | sbaddress[0];
+ D(fprintf(stderr, "sb_write() 0x%x @ 0x%lx\n", sbdata[0], address));
+ if (sbcs.sbaccess == 0 && max_bus_master_bits >= 8) {
+ sim->debug_mmu->store_uint8(address, sbdata[0]);
+ } else if (sbcs.sbaccess == 1 && max_bus_master_bits >= 16) {
+ sim->debug_mmu->store_uint16(address, sbdata[0]);
+ } else if (sbcs.sbaccess == 2 && max_bus_master_bits >= 32) {
+ sim->debug_mmu->store_uint32(address, sbdata[0]);
+ } else if (sbcs.sbaccess == 3 && max_bus_master_bits >= 64) {
+ sim->debug_mmu->store_uint64(address,
+ (((uint64_t) sbdata[1]) << 32) | sbdata[0]);
+ } else {
+ sbcs.error = 3;
+ }
+}
+
bool debug_module_t::dmi_read(unsigned address, uint32_t *value)
{
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, i);
+ if (abstractcs.busy) {
+ result = -1;
+ fprintf(stderr, "\ndmi_read(0x%02x (data[%d]) -> -1 because abstractcs.busy==true\n", address, i);
+ }
+
+ if (abstractcs.busy && abstractcs.cmderr == CMDERR_NONE) {
+ abstractcs.cmderr = CMDERR_BUSY;
+ }
+
+ if (!abstractcs.busy && ((abstractauto.autoexecdata >> i) & 1)) {
+ perform_abstract_command();
+ }
+ } else if (address >= DMI_PROGBUF0 && address < DMI_PROGBUF0 + progbufsize) {
+ unsigned i = address - DMI_PROGBUF0;
+ result = read32(program_buffer, i);
+ if (abstractcs.busy) {
+ result = -1;
+ fprintf(stderr, "\ndmi_read(0x%02x (progbuf[%d]) -> -1 because abstractcs.busy==true\n", address, i);
+ }
+ if (!abstractcs.busy && ((abstractauto.autoexecprogbuf >> i) & 1)) {
+ perform_abstract_command();
+ }
+
} 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, ((1L<<hartsellen)-1) <<
+ DMI_DMCONTROL_HARTSEL_OFFSET, 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_IMPEBREAK,
+ dmstatus.impebreak);
+ 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_VERSION, dmstatus.version);
}
- 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_PROGBUFSIZE,
+ abstractcs.progbufsize);
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;
+ case DMI_SBCS:
+ result = set_field(result, DMI_SBCS_SBVERSION, sbcs.version);
+ result = set_field(result, DMI_SBCS_SBREADONADDR, sbcs.readonaddr);
+ result = set_field(result, DMI_SBCS_SBACCESS, sbcs.sbaccess);
+ result = set_field(result, DMI_SBCS_SBAUTOINCREMENT, sbcs.autoincrement);
+ result = set_field(result, DMI_SBCS_SBREADONDATA, sbcs.readondata);
+ result = set_field(result, DMI_SBCS_SBERROR, sbcs.error);
+ result = set_field(result, DMI_SBCS_SBASIZE, sbcs.asize);
+ result = set_field(result, DMI_SBCS_SBACCESS128, sbcs.access128);
+ result = set_field(result, DMI_SBCS_SBACCESS64, sbcs.access64);
+ result = set_field(result, DMI_SBCS_SBACCESS32, sbcs.access32);
+ result = set_field(result, DMI_SBCS_SBACCESS16, sbcs.access16);
+ result = set_field(result, DMI_SBCS_SBACCESS8, sbcs.access8);
+ break;
+ case DMI_SBADDRESS0:
+ result = sbaddress[0];
+ break;
+ case DMI_SBADDRESS1:
+ result = sbaddress[1];
+ break;
+ case DMI_SBADDRESS2:
+ result = sbaddress[2];
+ break;
+ case DMI_SBADDRESS3:
+ result = sbaddress[3];
+ break;
+ case DMI_SBDATA0:
+ result = sbdata[0];
+ if (sbcs.error == 0) {
+ sb_autoincrement();
+ if (sbcs.readondata) {
+ sb_read();
+ }
+ }
+ break;
+ case DMI_SBDATA1:
+ result = sbdata[1];
+ break;
+ case DMI_SBDATA2:
+ result = sbdata[2];
+ break;
+ case DMI_SBDATA3:
+ result = sbdata[3];
+ 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;
}
+ D(fprintf(stderr, ">>> perform_abstract_command(0x%x)\n", command));
+
if ((command >> 24) == 0) {
// register access
unsigned size = get_field(command, AC_ACCESS_REGISTER_SIZE);
bool write = get_field(command, AC_ACCESS_REGISTER_WRITE);
unsigned regno = get_field(command, AC_ACCESS_REGISTER_REGNO);
- if (regno < 0x1000 || regno >= 0x1020) {
- abstractcs.cmderr = abstractcs.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) {
- case 2:
- if (write)
- write32(debug_rom_code, 0, lw(regnum, ZERO, DEBUG_EXCHANGE));
- else
- write32(debug_rom_code, 0, sw(regnum, ZERO, DEBUG_EXCHANGE));
- break;
- case 3:
- if (write)
- write32(debug_rom_code, 0, ld(regnum, ZERO, DEBUG_EXCHANGE));
- 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));
- break;
- */
- default:
- abstractcs.cmderr = abstractcs.CMDERR_NOTSUP;
+ if (get_field(command, AC_ACCESS_REGISTER_TRANSFER)) {
+
+ if (regno >= 0x1000 && regno < 0x1020) {
+ unsigned regnum = regno - 0x1000;
+
+ switch (size) {
+ case 2:
+ if (write)
+ write32(debug_abstract, 0, lw(regnum, ZERO, debug_data_start));
+ else
+ write32(debug_abstract, 0, sw(regnum, ZERO, debug_data_start));
+ break;
+ case 3:
+ if (write)
+ write32(debug_abstract, 0, ld(regnum, ZERO, debug_data_start));
+ else
+ write32(debug_abstract, 0, sd(regnum, ZERO, debug_data_start));
+ break;
+ default:
+ abstractcs.cmderr = CMDERR_NOTSUP;
+ return true;
+ }
+
+ } else {
+ abstractcs.cmderr = CMDERR_NOTSUP;
return true;
+ }
+
+ if (get_field(command, AC_ACCESS_REGISTER_POSTEXEC)) {
+ D(fprintf(stderr, ">>> post-exec!\n"));
+ write32(debug_abstract, 1,
+ jal(ZERO, debug_progbuf_start - debug_abstract_start - 4));
+ } else {
+ write32(debug_abstract, 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)));
- write32(debug_rom_exception, dmcontrol.hartsel,
- jal(ZERO, (DEBUG_ROM_ENTRY + 4 * dmcontrol.hartsel) - DEBUG_ROM_EXCEPTION));
+ debug_rom_flags[dmcontrol.hartsel] |= 1 << DEBUG_ROM_FLAG_GO;
+
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;
+ if (!abstractcs.busy)
+ write32(dmdata, address - DMI_DATA0, value);
+
+ if (abstractcs.busy && abstractcs.cmderr == CMDERR_NONE) {
+ abstractcs.cmderr = CMDERR_BUSY;
+ }
+
+ if (!abstractcs.busy && ((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 + progbufsize) {
+ unsigned i = address - DMI_PROGBUF0;
+
+ if (!abstractcs.busy)
+ write32(program_buffer, i, value);
+
+ if (!abstractcs.busy && ((abstractauto.autoexecprogbuf >> i) & 1)) {
+ perform_abstract_command();
+ }
return true;
+
} else {
switch (address) {
case DMI_DMCONTROL:
{
+ if (!dmcontrol.dmactive && get_field(value, DMI_DMCONTROL_DMACTIVE))
+ reset();
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.hartsel = get_field(value, DMI_DMCONTROL_HARTSEL);
- } else {
- reset();
+ dmcontrol.resumereq = get_field(value, DMI_DMCONTROL_RESUMEREQ);
+ dmcontrol.hartreset = get_field(value, DMI_DMCONTROL_HARTRESET);
+ dmcontrol.ndmreset = get_field(value, DMI_DMCONTROL_NDMRESET);
+ dmcontrol.hartsel = get_field(value, ((1L<<hartsellen)-1) <<
+ DMI_DMCONTROL_HARTSEL_OFFSET);
}
processor_t *proc = current_proc();
if (proc) {
proc->halt_request = dmcontrol.haltreq;
+ if (dmcontrol.resumereq) {
+ debug_rom_flags[dmcontrol.hartsel] |= (1 << DEBUG_ROM_FLAG_RESUME);
+ resumeack[dmcontrol.hartsel] = false;
+ }
+ if (dmcontrol.hartreset) {
+ proc->reset();
+ }
+ }
+ if (dmcontrol.ndmreset) {
+ for (size_t i = 0; i < sim->nprocs(); i++) {
+ proc = sim->get_core(i);
+ proc->reset();
+ }
}
}
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);
+ return true;
+ case DMI_SBCS:
+ sbcs.readonaddr = get_field(value, DMI_SBCS_SBREADONADDR);
+ sbcs.sbaccess = get_field(value, DMI_SBCS_SBACCESS);
+ sbcs.autoincrement = get_field(value, DMI_SBCS_SBAUTOINCREMENT);
+ sbcs.readondata = get_field(value, DMI_SBCS_SBREADONDATA);
+ sbcs.error &= ~get_field(value, DMI_SBCS_SBERROR);
+ return true;
+ case DMI_SBADDRESS0:
+ sbaddress[0] = value;
+ if (sbcs.error == 0 && sbcs.readonaddr) {
+ sb_read();
}
- break;
+ return true;
+ case DMI_SBADDRESS1:
+ sbaddress[1] = value;
+ return true;
+ case DMI_SBADDRESS2:
+ sbaddress[2] = value;
+ return true;
+ case DMI_SBADDRESS3:
+ sbaddress[3] = value;
+ return true;
+ case DMI_SBDATA0:
+ sbdata[0] = value;
+ if (sbcs.error == 0) {
+ sb_write();
+ if (sbcs.autoincrement && sbcs.error == 0) {
+ sb_autoincrement();
+ }
+ }
+ return true;
+ case DMI_SBDATA1:
+ sbdata[1] = value;
+ return true;
+ case DMI_SBDATA2:
+ sbdata[2] = value;
+ return true;
+ case DMI_SBDATA3:
+ sbdata[3] = value;
+ return true;
}
}
return false;
projects / riscv-isa-sim.git / blobdiff