rearrange globals

[picodrive.git] / cpu / drc / cmn.c

diff --git a/cpu/drc/cmn.c b/cpu/drc/cmn.c
index 08059f2..3f174a0 100644 (file)
--- a/cpu/drc/cmn.c
+++ b/cpu/drc/cmn.c
@@ -1,31 +1,56 @@
+/*
+ * PicoDrive
+ * Copyright (C) 2009,2010 notaz
+ *
+ * This work is licensed under the terms of MAME license.
+ * See COPYING file in the top-level directory.
+ */
 #include <stdio.h>
-#if defined(__linux__) && defined(ARM)
-#include <sys/mman.h>
-#endif
 
+#include <pico/pico_int.h>
 #include "cmn.h"
 
-u8 __attribute__((aligned(4096))) tcache[DRC_TCACHE_SIZE];
-
+u8 ALIGNED(4096) tcache_default[DRC_TCACHE_SIZE];
+u8 *tcache;
 
 void drc_cmn_init(void)
 {
-#if defined(__linux__) && defined(ARM)
-       void *tmp;
-
-       tmp = mmap(tcache, DRC_TCACHE_SIZE, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_SHARED|MAP_ANONYMOUS, -1, 0);
-       printf("mmap tcache: %p, asked %p\n", tmp, tcache);
+  int ret;
+
+  tcache = plat_mem_get_for_drc(DRC_TCACHE_SIZE);
+  if (tcache == NULL)
+    tcache = tcache_default;
+
+  ret = plat_mem_set_exec(tcache, DRC_TCACHE_SIZE);
+  elprintf(EL_STATUS, "drc_cmn_init: %p, %zd bytes: %d",
+    tcache, DRC_TCACHE_SIZE, ret);
+
+#ifdef __arm__
+  if (PicoIn.opt & POPT_EN_DRC)
+  {
+    static int test_done;
+    if (!test_done)
+    {
+      int *test_out = (void *)tcache;
+      int (*testfunc)(void) = (void *)tcache;
+
+      elprintf(EL_STATUS, "testing if we can run recompiled code..");
+      *test_out++ = 0xe3a000dd; // mov r0, 0xdd
+      *test_out++ = 0xe12fff1e; // bx lr
+      cache_flush_d_inval_i(tcache, test_out);
+
+      // we'll usually crash on broken platforms or bad ports,
+      // but do a value check too just in case
+      ret = testfunc();
+      elprintf(EL_STATUS, "test %s.", ret == 0xdd ? "passed" : "failed");
+      test_done = 1;
+    }
+  }
 #endif
-
 }
 
-// TODO: add calls in core, possibly to cart.c?
 void drc_cmn_cleanup(void)
 {
-#if defined(__linux__) && defined(ARM)
-       int ret;
-       ret = munmap(tcache, DRC_TCACHE_SIZE);
-       printf("munmap tcache: %i\n", ret);
-#endif
 }
 
+// vim:shiftwidth=2:expandtab