[PATCH] score/i386: Add context switch restore external symbol as a marker.

[Chris Johns]

Add an external symbol as a marker to the restore point in the
context switch. If you set the IP to this location for a blocked
thread and you use the saved register values in the TCB you can
view the thread's context.
---
 cpukit/score/cpu/i386/cpu_asm.S | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/cpukit/score/cpu/i386/cpu_asm.S b/cpukit/score/cpu/i386/cpu_asm.S
index 45079a6..3c20fd4 100644
--- a/cpukit/score/cpu/i386/cpu_asm.S
+++ b/cpukit/score/cpu/i386/cpu_asm.S
@@ -43,6 +43,7 @@
 
         .p2align  1
         PUBLIC (_CPU_Context_switch)
+        PUBLIC (_CPU_Context_switch_Restore_Marker)
 
 .set RUNCONTEXT_ARG,   4                   /* save context argument */
 .set HEIRCONTEXT_ARG,  8                   /* restore context argument */
@@ -75,6 +76,7 @@ SYM (_CPU_Context_switch):
         movb      $1, I386_CONTEXT_CONTROL_IS_EXECUTING_OFFSET(eax)
 #endif
 
+_CPU_Context_switch_Restore_Marker:
 restore:
         pushl     REG_EFLAGS(eax)          /* push eflags */
         popf                               /* restore eflags */
-- 
2.4.6