-#!/usr/bin/env python
# (C) Copyright IBM Corporation 2004, 2005
# (C) Copyright Apple Inc. 2011
+# Copyright (C) 2015 Intel Corporation
# All Rights Reserved.
#
# Permission is hereby granted, free of charge, to any person obtaining a
# Based on code ogiginally by:
# Ian Romanick <idr@us.ibm.com>
+from __future__ import print_function
+
+import argparse
+
import license
import gl_XML, glX_XML
-import sys, getopt
header = """/* GLXEXT is the define used in the xserver when the GLX extension is being
* built. Hijack this to determine whether this file is being built for the
#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
#endif
#include <stdlib.h>
#include <stdio.h>
+#include <string.h>
#include "main/glheader.h"
__glapi_gentable_set_remaining_noop(struct _glapi_table *disp) {
GLuint entries = _glapi_get_dispatch_table_size();
void **dispatch = (void **) disp;
- int i;
+ unsigned i;
/* ISO C is annoying sometimes */
union {_glapi_proc p; void *v;} p;
dispatch[i] = p.v;
}
+"""
+
+footer = """
struct _glapi_table *
_glapi_create_table_from_handle(void *handle, const char *symbol_prefix) {
struct _glapi_table *disp = calloc(_glapi_get_dispatch_table_size(), sizeof(_glapi_proc));
if(symbol_prefix == NULL)
symbol_prefix = "";
-"""
-
-footer = """
- __glapi_gentable_set_remaining_noop(disp);
- return disp;
-}
-"""
+ /* Note: This code relies on _glapi_table_func_names being sorted by the
+ * entry point index of each function.
+ */
+ for (int func_index = 0; func_index < GLAPI_TABLE_COUNT; ++func_index) {
+ const char *name = _glapi_table_func_names[func_index];
+ void ** procp = &((void **)disp)[func_index];
-body_template = """
- if(!disp->%(name)s) {
- void ** procp = (void **) &disp->%(name)s;
- snprintf(symboln, sizeof(symboln), "%%s%(entry_point)s", symbol_prefix);
+ snprintf(symboln, sizeof(symboln), \"%s%s\", symbol_prefix, name);
#ifdef _WIN32
*procp = GetProcAddress(handle, symboln);
#else
*procp = dlsym(handle, symboln);
#endif
}
+ __glapi_gentable_set_remaining_noop(disp);
+
+ 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);
+}
+
"""
+
class PrintCode(gl_XML.gl_print_base):
def __init__(self):
gl_XML.gl_print_base.__init__(self)
- self.name = "gl_gen_table.py (from Mesa)"
+ self.name = "gl_gentable.py (from Mesa)"
self.license = license.bsd_license_template % ( \
"""Copyright (C) 1999-2001 Brian Paul All Rights Reserved.
(C) Copyright IBM Corporation 2004, 2005
def printRealHeader(self):
- print header
+ print(header)
return
def printRealFooter(self):
- print footer
+ print(footer)
return
def printBody(self, api):
- for f in api.functionIterateByOffset():
- for entry_point in f.entry_points:
- vars = { 'entry_point' : entry_point,
- 'name' : f.name }
- print body_template % vars
+ # Determine how many functions have a defined offset.
+ func_count = 0
+ 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.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))
+ funcnames[f.offset] = f.name
+
+ # 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 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 range(0, func_count):
+ print(" /* %5d */ \"%s\"," % (i, funcnames[i]))
+ print("};")
+
return
-def show_usage():
- print "Usage: %s [-f input_file_name]" % sys.argv[0]
- sys.exit(1)
-if __name__ == '__main__':
- file_name = "gl_API.xml"
+def _parser():
+ """Parse arguments and return a namespace object."""
+ parser = argparse.ArgumentParser()
+ parser.add_argument('-f',
+ dest='filename',
+ default='gl_API.xml',
+ help='An XML file description of an API')
+
+ return parser.parse_args()
- try:
- (args, trail) = getopt.getopt(sys.argv[1:], "m:f:")
- except Exception,e:
- show_usage()
- for (arg,val) in args:
- if arg == "-f":
- file_name = val
+def main():
+ """Main function."""
+ args = _parser()
printer = PrintCode()
- api = gl_XML.parse_GL_API(file_name, glX_XML.glx_item_factory())
+ api = gl_XML.parse_GL_API(args.filename, glX_XML.glx_item_factory())
printer.Print(api)
+
+
+if __name__ == '__main__':
+ main()
projects / mesa.git / blobdiff