| |
| # (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 |
| # copy of this software and associated documentation files (the "Software"), |
| # to deal in the Software without restriction, including without limitation |
| # on the rights to use, copy, modify, merge, publish, distribute, sub |
| # license, 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 (including the next |
| # paragraph) 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 NON-INFRINGEMENT. IN NO EVENT SHALL |
| # IBM AND/OR ITS SUPPLIERS 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: |
| # Jeremy Huddleston <jeremyhu@apple.com> |
| # |
| # Based on code ogiginally by: |
| # Ian Romanick <idr@us.ibm.com> |
| |
| import argparse |
| |
| import license |
| import gl_XML, glX_XML |
| |
| 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 |
| * server or the client. |
| */ |
| #ifdef HAVE_DIX_CONFIG_H |
| #include <dix-config.h> |
| #endif |
| |
| #if (defined(GLXEXT) && defined(HAVE_BACKTRACE)) \\ |
| || (!defined(GLXEXT) && defined(DEBUG) && !defined(__CYGWIN__) && !defined(__MINGW32__) && !defined(__OpenBSD__) && !defined(__NetBSD__) && !defined(__DragonFly__)) |
| #define USE_BACKTRACE |
| #endif |
| |
| #ifdef USE_BACKTRACE |
| #include <execinfo.h> |
| #endif |
| |
| #ifndef _WIN32 |
| #include <dlfcn.h> |
| #endif |
| #include <stdlib.h> |
| #include <stdio.h> |
| #include <string.h> |
| |
| #include "main/glheader.h" |
| |
| #include "glapi.h" |
| #include "glapitable.h" |
| |
| #ifdef GLXEXT |
| #include "os.h" |
| #endif |
| |
| static void |
| __glapi_gentable_NoOp(void) { |
| const char *fstr = "Unknown"; |
| |
| /* Silence potential GCC warning for some #ifdef paths. |
| */ |
| (void) fstr; |
| #if defined(USE_BACKTRACE) |
| #if !defined(GLXEXT) |
| if (getenv("MESA_DEBUG") || getenv("LIBGL_DEBUG")) |
| #endif |
| { |
| void *frames[2]; |
| |
| if(backtrace(frames, 2) == 2) { |
| Dl_info info; |
| dladdr(frames[1], &info); |
| if(info.dli_sname) |
| fstr = info.dli_sname; |
| } |
| |
| #if !defined(GLXEXT) |
| fprintf(stderr, "Call to unimplemented API: %s\\n", fstr); |
| #endif |
| } |
| #endif |
| #if defined(GLXEXT) |
| LogMessage(X_ERROR, "GLX: Call to unimplemented API: %s\\n", fstr); |
| #endif |
| } |
| |
| static void |
| __glapi_gentable_set_remaining_noop(struct _glapi_table *disp) { |
| GLuint entries = _glapi_get_dispatch_table_size(); |
| void **dispatch = (void **) disp; |
| unsigned i; |
| |
| /* ISO C is annoying sometimes */ |
| union {_glapi_proc p; void *v;} p; |
| p.p = __glapi_gentable_NoOp; |
| |
| for(i=0; i < entries; i++) |
| if(dispatch[i] == NULL) |
| 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)); |
| char symboln[512]; |
| |
| if(!disp) |
| return NULL; |
| |
| if(symbol_prefix == NULL) |
| symbol_prefix = ""; |
| |
| /* 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]; |
| |
| 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_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 |
| (C) Copyright Apple Inc 2011""", "BRIAN PAUL, IBM") |
| |
| return |
| |
| |
| def get_stack_size(self, f): |
| size = 0 |
| for p in f.parameterIterator(): |
| if p.is_padding: |
| continue |
| |
| size += p.get_stack_size() |
| |
| return size |
| |
| |
| def printRealHeader(self): |
| print header |
| return |
| |
| |
| def printRealFooter(self): |
| print footer |
| return |
| |
| |
| def printBody(self, api): |
| |
| # Determine how many functions have a defined offset. |
| func_count = 0 |
| for f in api.functions_by_name.itervalues(): |
| 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(): |
| 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 xrange(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 "};" |
| |
| return |
| |
| |
| 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() |
| |
| |
| def main(): |
| """Main function.""" |
| args = _parser() |
| |
| printer = PrintCode() |
| |
| api = gl_XML.parse_GL_API(args.filename, glX_XML.glx_item_factory()) |
| printer.Print(api) |
| |
| |
| if __name__ == '__main__': |
| main() |