#include "Plugins/Process/Utility/RegisterContextLinux_i386.h"
#include "Plugins/Process/Utility/RegisterContextLinux_x86_64.h"
+#include <linux/elf.h>
+
using namespace lldb_private;
using namespace lldb_private::process_linux;
#define NT_PRXFPREG 0x46e62b7f
#endif
+// On x86_64 NT_PRFPREG is used to access the FXSAVE area. On i386, we need to
+// use NT_PRXFPREG.
+static inline unsigned int fxsr_regset(const ArchSpec &arch) {
+ return arch.GetAddressByteSize() == 8 ? NT_PRFPREG : NT_PRXFPREG;
+}
+
// ----------------------------------------------------------------------------
// Required MPX define.
// ----------------------------------------------------------------------------
Error NativeRegisterContextLinux_x86_64::WriteFPR() {
switch (m_xstate_type) {
case XStateType::FXSAVE:
- return WriteRegisterSet(&m_iovec, sizeof(m_fpr.xstate.xsave),
- NT_PRXFPREG);
+ return WriteRegisterSet(
+ &m_iovec, sizeof(m_fpr.xstate.xsave),
+ fxsr_regset(GetRegisterInfoInterface().GetTargetArchitecture()));
case XStateType::XSAVE:
return WriteRegisterSet(&m_iovec, sizeof(m_fpr.xstate.xsave),
NT_X86_XSTATE);
return error;
}
}
- error = ReadRegisterSet(&m_iovec, sizeof(m_fpr.xstate.xsave), NT_PRXFPREG);
+ error = ReadRegisterSet(
+ &m_iovec, sizeof(m_fpr.xstate.xsave),
+ fxsr_regset(GetRegisterInfoInterface().GetTargetArchitecture()));
if (!error.Fail()) {
m_xstate_type = XStateType::FXSAVE;
return error;