Allow reading registers by thread ID in ProcessMonitor (Linux implementation)
- make FreeBSD ProcessMonitor API thread-ready

Patch by Matt Kopec!

llvm-svn: 170445
diff --git a/lldb/source/Plugins/Process/FreeBSD/ProcessMonitor.cpp b/lldb/source/Plugins/Process/FreeBSD/ProcessMonitor.cpp
index 177153a..e37a660 100644
--- a/lldb/source/Plugins/Process/FreeBSD/ProcessMonitor.cpp
+++ b/lldb/source/Plugins/Process/FreeBSD/ProcessMonitor.cpp
@@ -1410,7 +1410,8 @@
 }
 
 bool
-ProcessMonitor::ReadRegisterValue(unsigned offset, unsigned size, RegisterValue &value)
+ProcessMonitor::ReadRegisterValue(lldb::tid_t tid, unsigned offset,
+                                  unsigned size, RegisterValue &value)
 {
     bool result;
     ReadRegOperation op(offset, size, value, result);
@@ -1419,7 +1420,8 @@
 }
 
 bool
-ProcessMonitor::WriteRegisterValue(unsigned offset, const RegisterValue &value)
+ProcessMonitor::WriteRegisterValue(lldb::tid_t tid, unsigned offset,
+                                   const RegisterValue &value)
 {
     bool result;
     WriteRegOperation op(offset, value, result);
@@ -1428,7 +1430,7 @@
 }
 
 bool
-ProcessMonitor::ReadGPR(void *buf)
+ProcessMonitor::ReadGPR(lldb::tid_t tid, void *buf)
 {
     bool result;
     ReadGPROperation op(buf, result);
@@ -1437,7 +1439,7 @@
 }
 
 bool
-ProcessMonitor::ReadFPR(void *buf)
+ProcessMonitor::ReadFPR(lldb::tid_t tid, void *buf)
 {
     bool result;
     ReadFPROperation op(buf, result);
@@ -1446,7 +1448,7 @@
 }
 
 bool
-ProcessMonitor::WriteGPR(void *buf)
+ProcessMonitor::WriteGPR(lldb::tid_t tid, void *buf)
 {
     bool result;
     WriteGPROperation op(buf, result);
@@ -1455,7 +1457,7 @@
 }
 
 bool
-ProcessMonitor::WriteFPR(void *buf)
+ProcessMonitor::WriteFPR(lldb::tid_t tid, void *buf)
 {
     bool result;
     WriteFPROperation op(buf, result);
diff --git a/lldb/source/Plugins/Process/FreeBSD/ProcessMonitor.h b/lldb/source/Plugins/Process/FreeBSD/ProcessMonitor.h
index 5530ca3..4193c77 100644
--- a/lldb/source/Plugins/Process/FreeBSD/ProcessMonitor.h
+++ b/lldb/source/Plugins/Process/FreeBSD/ProcessMonitor.h
@@ -103,31 +103,45 @@
     /// dependent) offset.
     ///
     /// This method is provided for use by RegisterContextFreeBSD derivatives.
+    /// FIXME: The FreeBSD implementation of this function should use tid in order
+    ///        to enable support for debugging threaded programs.
     bool
-    ReadRegisterValue(unsigned offset, unsigned size, lldb_private::RegisterValue &value);
+    ReadRegisterValue(lldb::tid_t tid, unsigned offset,
+                      unsigned size, lldb_private::RegisterValue &value);
 
     /// Writes the given value to the register identified by the given
     /// (architecture dependent) offset.
     ///
     /// This method is provided for use by RegisterContextFreeBSD derivatives.
+    /// FIXME: The FreeBSD implementation of this function should use tid in order
+    ///        to enable support for debugging threaded programs.
     bool
-    WriteRegisterValue(unsigned offset, const lldb_private::RegisterValue &value);
+    WriteRegisterValue(lldb::tid_t tid, unsigned offset,
+                       const lldb_private::RegisterValue &value);
 
     /// Reads all general purpose registers into the specified buffer.
+    /// FIXME: The FreeBSD implementation of this function should use tid in order
+    ///        to enable support for debugging threaded programs.
     bool
-    ReadGPR(void *buf);
+    ReadGPR(lldb::tid_t tid, void *buf);
 
     /// Reads all floating point registers into the specified buffer.
+    /// FIXME: The FreeBSD implementation of this function should use tid in order
+    ///        to enable support for debugging threaded programs.
     bool
-    ReadFPR(void *buf);
+    ReadFPR(lldb::tid_t tid, void *buf);
 
     /// Writes all general purpose registers into the specified buffer.
+    /// FIXME: The FreeBSD implementation of this function should use tid in order
+    ///        to enable support for debugging threaded programs.
     bool
-    WriteGPR(void *buf);
+    WriteGPR(lldb::tid_t tid, void *buf);
 
     /// Writes all floating point registers into the specified buffer.
+    /// FIXME: The FreeBSD implementation of this function should use tid in order
+    ///        to enable support for debugging threaded programs.
     bool
-    WriteFPR(void *buf);
+    WriteFPR(lldb::tid_t tid, void *buf);
 
     /// Writes a siginfo_t structure corresponding to the given thread ID to the
     /// memory region pointed to by @p siginfo.