[RFA 3/5] Prec: x86 segment register support: target

[Hui Zhu <teawater@gmail.com>]

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This patch add a interface to let GDB get segment base message from inferior.

Thanks,
Hui

2010-03-16  Hui Zhu  <teawater@gmail.com>

	* target.c (update_current_target): Add to_get_segment_base.
	* target.h (target_ops): Ditto.

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---
 target.c |    1 +
 target.h |    4 ++++
 2 files changed, 5 insertions(+)

--- a/target.c
+++ b/target.c
@@ -659,6 +659,7 @@ update_current_target (void)
       INHERIT (to_upload_trace_state_variables, t);
       INHERIT (to_get_raw_trace_data, t);
       INHERIT (to_set_disconnected_tracing, t);
+      INHERIT (to_get_segment_base, t);
       INHERIT (to_magic, t);
       /* Do not inherit to_memory_map.  */
       /* Do not inherit to_flash_erase.  */
--- a/target.h
+++ b/target.h
@@ -673,6 +673,10 @@ struct target_ops
        right now, or in this debug session, or for this target -- return -1.  */
     int (*to_core_of_thread) (struct target_ops *, ptid_t ptid);
 
+    /* Get the segment base of current inferior to BASE.
+       Return 0 if success.  */
+    int (*to_get_segment_base) (int idx, ULONGEST *base);
+
     int to_magic;
     /* Need sub-structure for target machine related rather than comm related?
      */