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Diffstat (limited to 'target/xtensa/gdbstub.c')
-rw-r--r--target/xtensa/gdbstub.c13
1 files changed, 10 insertions, 3 deletions
diff --git a/target/xtensa/gdbstub.c b/target/xtensa/gdbstub.c
index fa5469a4ef..da131ae8cc 100644
--- a/target/xtensa/gdbstub.c
+++ b/target/xtensa/gdbstub.c
@@ -58,7 +58,10 @@ int xtensa_cpu_gdb_read_register(CPUState *cs, uint8_t *mem_buf, int n)
         case 8:
             return gdb_get_reg64(mem_buf, float64_val(env->fregs[i].f64));
         default:
-            return 0;
+            qemu_log_mask(LOG_UNIMP, "%s from reg %d of unsupported size %d\n",
+                          __func__, n, reg->size);
+            memset(mem_buf, 0, reg->size);
+            return reg->size;
         }
 
     case 8: /*a*/
@@ -67,6 +70,8 @@ int xtensa_cpu_gdb_read_register(CPUState *cs, uint8_t *mem_buf, int n)
     default:
         qemu_log_mask(LOG_UNIMP, "%s from reg %d of unsupported type %d\n",
                       __func__, n, reg->type);
+        memset(mem_buf, 0, reg->size);
+        return reg->size;
         return 0;
     }
 }
@@ -111,7 +116,9 @@ int xtensa_cpu_gdb_write_register(CPUState *cs, uint8_t *mem_buf, int n)
             env->fregs[reg->targno & 0x0f].f64 = make_float64(tmp);
             return 8;
         default:
-            return 0;
+            qemu_log_mask(LOG_UNIMP, "%s to reg %d of unsupported size %d\n",
+                          __func__, n, reg->size);
+            return reg->size;
         }
 
     case 8: /*a*/
@@ -121,7 +128,7 @@ int xtensa_cpu_gdb_write_register(CPUState *cs, uint8_t *mem_buf, int n)
     default:
         qemu_log_mask(LOG_UNIMP, "%s to reg %d of unsupported type %d\n",
                       __func__, n, reg->type);
-        return 0;
+        return reg->size;
     }
 
     return 4;