Add --disable-dtb option to suppress writing the DTB to memory

[riscv-isa-sim.git] / riscv / debug_module.cc

diff --git a/riscv/debug_module.cc b/riscv/debug_module.cc
index 74c302300c8c14c3df029899d5122184f190aea7..f271d74453946d79ddd1830d330aa114f27403c6 100644 (file)
--- a/riscv/debug_module.cc
+++ b/riscv/debug_module.cc
@@ -4,6 +4,7 @@
 #include "debug_defines.h"
 #include "opcodes.h"
 #include "mmu.h"
+#include "sim.h"
 
 #include "debug_rom/debug_rom.h"
 #include "debug_rom_defines.h"
@@ -35,6 +36,7 @@ debug_module_t::debug_module_t(sim_t *sim, unsigned progbufsize, unsigned max_bu
   memset(halted, 0, sizeof(halted));
   memset(debug_rom_flags, 0, sizeof(debug_rom_flags));
   memset(resumeack, 0, sizeof(resumeack));
+  memset(havereset, 0, sizeof(havereset));
   memset(program_buffer, 0, program_buffer_bytes);
   program_buffer[4*progbufsize] = ebreak();
   program_buffer[4*progbufsize+1] = ebreak() >> 8;
@@ -346,8 +348,9 @@ bool debug_module_t::dmi_read(unsigned address, uint32_t *value)
 
           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_HARTSELHI,
+              dmcontrol.hartsel >> DMI_DMCONTROL_HARTSELLO_LENGTH);
+          result = set_field(result, DMI_DMCONTROL_HARTSELLO, 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);
@@ -387,6 +390,10 @@ bool debug_module_t::dmi_read(unsigned address, uint32_t *value)
 
           result = set_field(result, DMI_DMSTATUS_IMPEBREAK,
               dmstatus.impebreak);
+          result = set_field(result, DMI_DMSTATUS_ALLHAVERESET,
+              havereset[dmcontrol.hartsel]);
+          result = set_field(result, DMI_DMSTATUS_ANYHAVERESET,
+              havereset[dmcontrol.hartsel]);
          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);
@@ -662,8 +669,13 @@ bool debug_module_t::dmi_write(unsigned address, uint32_t value)
             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);
+            dmcontrol.hartsel = get_field(value, DMI_DMCONTROL_HARTSELHI) <<
+              DMI_DMCONTROL_HARTSELLO_LENGTH;
+            dmcontrol.hartsel |= get_field(value, DMI_DMCONTROL_HARTSELLO);
+            dmcontrol.hartsel &= (1L<<hartsellen) - 1;
+            if (get_field(value, DMI_DMCONTROL_ACKHAVERESET)) {
+              havereset[dmcontrol.hartsel] = false;
+            }
           }
           processor_t *proc = current_proc();
           if (proc) {
@@ -755,3 +767,9 @@ bool debug_module_t::dmi_write(unsigned address, uint32_t value)
   }
   return false;
 }
+
+void debug_module_t::proc_reset(unsigned id)
+{
+  havereset[id] = true;
+  halted[id] = false;
+}