+ if (address >= DMI_DATA0 && address < DMI_DATA0 + abstractcs.datacount) {
+ 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]) {
+ dmstatus.allhalted = true;
+ } else {
+ dmstatus.allrunning = true;
+ }
+ } else {
+ dmstatus.allnonexistant = true;
+ }
+ 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;
+ case DMI_ABSTRACTCS:
+ 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_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;
+ case DMI_AUTHDATA:
+ result = challenge;
+ break;
+ default:
+ result = 0;
+ D(fprintf(stderr, "Unexpected. Returning Error."));
+ return false;
+ }
+ }
+ D(fprintf(stderr, "0x%x\n", result));
+ *value = result;
+ return true;
+}
+
+bool debug_module_t::perform_abstract_command()
+{
+ if (abstractcs.cmderr != CMDERR_NONE)
+ return true;
+ if (abstractcs.busy) {
+ abstractcs.cmderr = CMDERR_BUSY;
+ return true;
+ }
+
+ 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 (!halted[dmcontrol.hartsel]) {
+ abstractcs.cmderr = CMDERR_HALTRESUME;
+ return true;
+ }
+
+ if (get_field(command, AC_ACCESS_REGISTER_TRANSFER)) {
+
+ if (regno < 0x1000 || regno >= 0x1020) {
+ abstractcs.cmderr = CMDERR_NOTSUP;
+ return true;
+ }
+
+ 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;
+ /*
+ 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 = CMDERR_NOTSUP;
+ return true;
+ }
+ } else {
+ //NOP
+ write32(debug_abstract, 0, addi(ZERO, ZERO, 0));
+ }
+
+ if (get_field(command, AC_ACCESS_REGISTER_POSTEXEC)) {
+ // Since the next instruction is what we will use, just use nother NOP
+ // to get there.
+ write32(debug_abstract, 1, addi(ZERO, ZERO, 0));
+ } else {
+ write32(debug_abstract, 1, ebreak());
+ }
+
+ debug_rom_flags[dmcontrol.hartsel] |= 1 << DEBUG_ROM_FLAG_GO;
+
+ abstractcs.busy = true;
+ } else {
+ abstractcs.cmderr = CMDERR_NOTSUP;
+ }