mapi/glapi: Generate sizeof() helpers instead of fixed sizes.

[mesa.git] / src / mapi / glapi / gen / gl_gentable.py

diff --git a/src/mapi/glapi/gen/gl_gentable.py b/src/mapi/glapi/gen/gl_gentable.py
index 2f54d1d5792a81a5618d9aacad38269c14313d26..92e1a546cffc0978c20b66096344e951c40a2a5c 100644 (file)
--- a/src/mapi/glapi/gen/gl_gentable.py
+++ b/src/mapi/glapi/gen/gl_gentable.py
@@ -29,6 +29,8 @@
 # Based on code ogiginally by:
 #    Ian Romanick <idr@us.ibm.com>
 
+from __future__ import print_function
+
 import argparse
 
 import license
@@ -43,7 +45,7 @@ header = """/* GLXEXT is the define used in the xserver when the GLX extension i
 #endif
 
 #if (defined(GLXEXT) && defined(HAVE_BACKTRACE)) \\
-       || (!defined(GLXEXT) && defined(DEBUG) && !defined(__CYGWIN__) && !defined(__MINGW32__) && !defined(__OpenBSD__) && !defined(__NetBSD__) && !defined(__DragonFly__))
+       || (!defined(GLXEXT) && defined(DEBUG) && defined(HAVE_EXECINFO_H))
 #define USE_BACKTRACE
 #endif
 
@@ -56,6 +58,7 @@ header = """/* GLXEXT is the define used in the xserver when the GLX extension i
 #endif
 #include <stdlib.h>
 #include <stdio.h>
+#include <string.h>
 
 #include "main/glheader.h"
 
@@ -144,6 +147,19 @@ _glapi_create_table_from_handle(void *handle, const char *symbol_prefix) {
 
     return disp;
 }
+
+void
+ _glapi_table_patch(struct _glapi_table *table, const char *name, void *wrapper)
+{
+   for (int func_index = 0; func_index < GLAPI_TABLE_COUNT; ++func_index) {
+      if (!strcmp(_glapi_table_func_names[func_index], name)) {
+            ((void **)table)[func_index] = wrapper;
+            return;
+         }
+   }
+   fprintf(stderr, "could not patch %s in dispatch table\\n", name);
+}
+
 """
 
 
@@ -173,12 +189,12 @@ class PrintCode(gl_XML.gl_print_base):
 
 
     def printRealHeader(self):
-        print header
+        print(header)
         return
 
 
     def printRealFooter(self):
-        print footer
+        print(footer)
         return
 
 
@@ -186,13 +202,13 @@ class PrintCode(gl_XML.gl_print_base):
 
         # Determine how many functions have a defined offset.
         func_count = 0
-        for f in api.functions_by_name.itervalues():
+        for f in api.functions_by_name.values():
             if f.offset != -1:
                 func_count += 1
 
         # Build the mapping from offset to function name.
         funcnames = [None] * func_count
-        for f in api.functions_by_name.itervalues():
+        for f in api.functions_by_name.values():
             if f.offset != -1:
                 if not (funcnames[f.offset] is None):
                     raise Exception("Function table has more than one function with same offset (offset %d, func %s)" % (f.offset, f.name))
@@ -200,15 +216,15 @@ class PrintCode(gl_XML.gl_print_base):
 
         # Check that the table has no gaps.  We expect a function at every offset,
         # and the code which generates the table relies on this.
-        for i in xrange(0, func_count):
+        for i in range(0, func_count):
             if funcnames[i] is None:
                 raise Exception("Function table has no function at offset %d" % (i))
 
-        print "#define GLAPI_TABLE_COUNT %d" % func_count
-        print "static const char * const _glapi_table_func_names[GLAPI_TABLE_COUNT] = {"
-        for i in xrange(0, func_count):
-            print "    /* %5d */ \"%s\"," % (i, funcnames[i])
-        print "};"
+        print("#define GLAPI_TABLE_COUNT %d" % func_count)
+        print("static const char * const _glapi_table_func_names[GLAPI_TABLE_COUNT] = {")
+        for i in range(0, func_count):
+            print("    /* %5d */ \"%s\"," % (i, funcnames[i]))
+        print("};")
 
         return