1 files changed, 89 insertions, 0 deletions
diff --git a/src/mapi/mapi/entry_x86_tsd.h b/src/mapi/mapi/entry_x86_tsd.h
new file mode 100644
index 0000000000..d31e0676f0
--- /dev/null
+++ b/src/mapi/mapi/entry_x86_tsd.h
@@ -0,0 +1,89 @@
+/*
+ * Mesa 3-D graphics library
+ * Version:  7.9
+ *
+ * Copyright (C) 2010 LunarG Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ *
+ * Authors:
+ *    Chia-I Wu <olv@lunarg.com>
+ */
+
+#include <string.h>
+#include "u_execmem.h"
+#include "u_macros.h"
+
+#define X86_ENTRY_SIZE 32
+
+__asm__(".text");
+
+#define STUB_ASM_ENTRY(func)        \
+   ".globl " func "\n"              \
+   ".type " func ", @function\n"    \
+   ".balign 32\n"                   \
+   func ":"
+
+#define STUB_ASM_CODE(slot)         \
+   "movl _glapi_Dispatch, %eax\n\t" \
+   "testl %eax, %eax\n\t"           \
+   "je 1f\n\t"                      \
+   "jmp *(4 * " slot ")(%eax)\n"    \
+   "1:\n\t"                         \
+   "call _glapi_get_dispatch\n\t"   \
+   "jmp *(4 * " slot ")(%eax)"
+
+#define MAPI_TMP_STUB_ASM_GCC
+#include "mapi_tmp.h"
+
+__asm__(".balign 32\n"
+        "x86_entry_end:");
+
+void
+entry_patch_public(void)
+{
+}
+
+void
+entry_patch(mapi_func entry, int slot)
+{
+   void *code = (void *) entry;
+
+   *((unsigned long *) (code + 11)) = slot * sizeof(mapi_func);
+   *((unsigned long *) (code + 22)) = slot * sizeof(mapi_func);
+}
+
+mapi_func
+entry_generate(int slot)
+{
+   extern const char x86_entry_end[];
+   const char *code_templ = x86_entry_end - X86_ENTRY_SIZE;
+   void *code;
+   mapi_func entry;
+
+   code = u_execmem_alloc(X86_ENTRY_SIZE);
+   if (!code)
+      return NULL;
+
+   memcpy(code, code_templ, X86_ENTRY_SIZE);
+   entry = (mapi_func) code;
+   entry_patch(entry, slot);
+
+   return entry;
+}