+ uint32_t result = 0;
+ D(fprintf(stderr, "dmi_read(0x%x) -> ", address));
+ 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;
+ default:
+ result = 0;
+ D(fprintf(stderr, "Unexpected. Returning Error."));
+ return false;
+ }
+ }
+ D(fprintf(stderr, "0x%x\n", result));
+ *value = result;
+ return true;