Add --debug-no-abstract-csr (#267)

This is used to make sure that OpenOCD can work on targets that don't
support abstract access to CSR registers. It replaces a simpler hack,
which caused #266.

1 files changed, 5 insertions, 1 deletions

diff --git a/spike_main/spike.cc b/spike_main/spike.cc
index 2bf8d28..b67ae2f 100644
--- a/spike_main/spike.cc
+++ b/spike_main/spike.cc
@@ -49,6 +49,7 @@ static void help(int exit_code = 1)
   fprintf(stderr, "  --abstract-rti=<n>    Number of Run-Test/Idle cycles "
       "required for an abstract command to execute [default 0]\n");
   fprintf(stderr, "  --without-hasel       Debug module supports hasel\n");
+  fprintf(stderr, "  --debug-no-abstract-csr  Debug module won't support abstract to authenticate\n");
 
   exit(exit_code);
 }
@@ -115,6 +116,7 @@ int main(int argc, char** argv)
   unsigned dmi_rti = 0;
   unsigned abstract_rti = 0;
   bool support_hasel = true;
+  bool support_abstract_csr_access = true;
   std::vector<int> hartids;
 
   auto const hartids_parser = [&](const char *s) {
@@ -168,6 +170,8 @@ int main(int argc, char** argv)
       [&](const char* s){abstract_rti = atoi(s);});
   parser.option(0, "without-hasel", 0,
       [&](const char* s){support_hasel = false;});
+  parser.option(0, "debug-no-abstract-csr", 0,
+      [&](const char* s){support_abstract_csr_access = false;});
 
   auto argv1 = parser.parse(argv);
   std::vector<std::string> htif_args(argv1, (const char*const*)argv + argc);
@@ -179,7 +183,7 @@ int main(int argc, char** argv)
 
   sim_t s(isa, nprocs, halted, start_pc, mems, htif_args, std::move(hartids),
       progsize, max_bus_master_bits, require_authentication,
-      abstract_rti, support_hasel);
+      abstract_rti, support_hasel, support_abstract_csr_access);
   std::unique_ptr<remote_bitbang_t> remote_bitbang((remote_bitbang_t *) NULL);
   std::unique_ptr<jtag_dtm_t> jtag_dtm(
       new jtag_dtm_t(&s.debug_module, dmi_rti));