util: Implement Lua module for m5ops.

This module allows m5ops to be executed in Lua programs.
To compile it (in util/m5):
    The following command generates Lua moduel, gem5OpLua.so.

    make -f Makefile.<arch> gem5OpLua.so

To use it:
    First, put gem5OpLua.so in Lua library search path.
    Then, import the module and execute the m5op function.

Example usage, creating a checkpoint.

    m5 = require("gem5OpLua")
    m5.do_checkpoint(0, 0)

Change-Id: Icc18a1fb6c050afeb1cf4558fbdc724fb26a90e2
Reviewed-on: https://gem5-review.googlesource.com/6541
Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com>
Maintainer: Andreas Sandberg <andreas.sandberg@arm.com>

1 files changed, 1 insertions, 23 deletions

diff --git a/util/m5/m5.c b/util/m5/m5.c
index 38da9dc37..48b8ed9b7 100644
--- a/util/m5/m5.c
+++ b/util/m5/m5.c
@@ -58,8 +58,7 @@
 #include <unistd.h>
 
 #include <gem5/m5ops.h>
-
-void *m5_mem = NULL;
+#include "m5_mmap.h"
 
 char *progname;
 char *command = "unspecified";
@@ -375,27 +374,6 @@ usage()
     exit(1);
 }
 
-static void
-map_m5_mem()
-{
-#ifdef M5OP_ADDR
-    int fd;
-
-    fd = open("/dev/mem", O_RDWR | O_SYNC);
-    if (fd == -1) {
-        perror("Can't open /dev/mem");
-        exit(1);
-    }
-
-    m5_mem = mmap(NULL, 0x10000, PROT_READ | PROT_WRITE, MAP_SHARED, fd,
-                  M5OP_ADDR);
-    if (!m5_mem) {
-        perror("Can't mmap /dev/mem");
-        exit(1);
-    }
-#endif
-}
-
 int
 main(int argc, char *argv[])
 {