EFI/acpiexec: Add stubs for Ctrl+C signal handling

Currently we do not support console termination caused by Ctrl+C for EFI
environment. Lv Zheng.

Signed-off-by: Lv Zheng <lv.zheng@intel.com>

source/include/platform/acenv.h

@@ -426,6 +426,7 @@
 #include <stdio.h>
 #include <fcntl.h>
 #include <errno.h>
+#include <signal.h>
 #include <sys/stat.h>
 #endif
 

source/tools/acpiexec/aecommon.h

@@ -173,9 +173,11 @@ extern ACPI_CONNECTION_INFO AeMyContext;
 #define OSD_PRINT(lvl,fp)               TEST_OUTPUT_LEVEL(lvl) {\
                                             AcpiOsPrintf PARAM_LIST(fp);}
 
+#ifndef _GNU_EFI
 void ACPI_SYSTEM_XFACE
 AeCtrlCHandler (
     int                     Sig);
+#endif
 
 ACPI_STATUS
 AeBuildLocalTables (

source/tools/acpiexec/aehandlers.c

@@ -192,10 +192,12 @@ static char                *TableEvents[] =
 #endif /* !ACPI_REDUCED_HARDWARE */
 
 
-static UINT32               SigintCount = 0;
 static AE_DEBUG_REGIONS     AeRegions;
 
 
+#ifndef _GNU_EFI
+static UINT32               SigintCount = 0;
+
 /******************************************************************************
  *
  * FUNCTION:    AeCtrlCHandler
@@ -232,6 +234,7 @@ AeCtrlCHandler (
     (void) AcpiOsTerminate ();
     exit (0);
 }
+#endif
 
 
 /******************************************************************************

source/tools/acpiexec/aemain.c

@@ -530,7 +530,9 @@ main (
 
 
     ACPI_DEBUG_INITIALIZE (); /* For debug version only */
+#ifndef _GNU_EFI
     signal (SIGINT, AeCtrlCHandler);
+#endif
 
     /* Init debug globals */