From: Brian Campbell <bacam@z273.org.uk>
Date: Fri, 30 Dec 2016 21:14:50 +0000 (+0000)
Subject: Only read exception flag in gdb register read/write. (#85)
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=f38dcde0d80d2f4818b8f20067b8de5267c8ade6;p=riscv-isa-sim.git

Only read exception flag in gdb register read/write. (#85)

The flag is 32 bits, and if we read 64/128 bits then we get fragments of
S1 too and can accidentally send an error.  Fixes #84.
---

diff --git a/riscv/gdbserver.cc b/riscv/gdbserver.cc
index 4303adf..7e83c49 100644
--- a/riscv/gdbserver.cc
+++ b/riscv/gdbserver.cc
@@ -648,7 +648,7 @@ class register_read_op_t : public operation_t
 
         case 1:
           {
-            unsigned result = gs.dr_read(SLOT_DATA_LAST);
+            unsigned result = gs.dr_read32(DEBUG_RAM_SIZE / 4 - 1);
             if (result) {
               gs.send_packet("E03");
               return true;
@@ -728,7 +728,7 @@ class register_write_op_t : public operation_t
 
         case 1:
           {
-            unsigned result = gs.dr_read(SLOT_DATA_LAST);
+            unsigned result = gs.dr_read32(DEBUG_RAM_SIZE / 4 - 1);
             if (result) {
               gs.send_packet("E03");
               return true;