hwstub/qeditor: add support for atomic read/writes

The current code assumed that READ/WRITE would produce atomic read/writes for
8/16/32-bit words, which in turned put assumption on the memcpy function.
Since some memcpy implementation do not always guarantee such strong assumption,
introduce two new operation READ/WRITE_ATOMIC which provide the necessary
tools to do correct read and write to register in a single memory access.

Change-Id: I37451bd5057bb0dcaf5a800d8aef8791c792a090

1 files changed, 2 insertions, 2 deletions

diff --git a/utils/regtools/qeditor/backend.cpp b/utils/regtools/qeditor/backend.cpp
index 570ae4d..e73263d 100644
--- a/utils/regtools/qeditor/backend.cpp
+++ b/utils/regtools/qeditor/backend.cpp
@@ -266,7 +266,7 @@ bool HWStubDevice::ReadMem(soc_addr_t addr, size_t length, void *buffer)
 {
     if(!m_hwdev)
         return false;
-    int ret = hwstub_rw_mem(m_hwdev, 1, addr, buffer, length);
+    int ret = hwstub_rw_mem_atomic(m_hwdev, 1, addr, buffer, length);
     return ret >= 0 && (size_t)ret == length;
 }
 
@@ -274,7 +274,7 @@ bool HWStubDevice::WriteMem(soc_addr_t addr, size_t length, void *buffer)
 {
     if(!m_hwdev)
         return false;
-    int ret = hwstub_rw_mem(m_hwdev, 0, addr, buffer, length);
+    int ret = hwstub_rw_mem_atomic(m_hwdev, 0, addr, buffer, length);
     return ret >= 0 && (size_t)ret == length;
 }