src/video/x11/SDL_x11dyn.c
author Jinke Fan <fanjinke@hygon.cn>
Wed, 15 May 2019 19:54:36 +0800
changeset 13082 f77988be3607
parent 12503 806492103856
permissions -rw-r--r--
Add Hygon Dhyana processor support

Background:
Chengdu Haiguang IC Design Co., Ltd (Hygon) is a Joint Venture
between AMD and Haiguang Information Technology Co.,Ltd., aims at
providing high performance x86 processor for China server market.
Its first generation processor codename is Dhyana, which
originates from AMD technology and shares most of the
architecture with AMD's family 17h, but with different CPU Vendor
ID("HygonGenuine")/Family series number(Family 18h).

Related Hygon kernel patch can be found on:
http://lkml.kernel.org/r/5ce86123a7b9dad925ac583d88d2f921040e859b.1538583282.git.puwen@hygon.cn

Best regards.
     1 /*
     2   Simple DirectMedia Layer
     3   Copyright (C) 1997-2019 Sam Lantinga <slouken@libsdl.org>
     4 
     5   This software is provided 'as-is', without any express or implied
     6   warranty.  In no event will the authors be held liable for any damages
     7   arising from the use of this software.
     8 
     9   Permission is granted to anyone to use this software for any purpose,
    10   including commercial applications, and to alter it and redistribute it
    11   freely, subject to the following restrictions:
    12 
    13   1. The origin of this software must not be misrepresented; you must not
    14      claim that you wrote the original software. If you use this software
    15      in a product, an acknowledgment in the product documentation would be
    16      appreciated but is not required.
    17   2. Altered source versions must be plainly marked as such, and must not be
    18      misrepresented as being the original software.
    19   3. This notice may not be removed or altered from any source distribution.
    20 */
    21 #include "../../SDL_internal.h"
    22 
    23 #if SDL_VIDEO_DRIVER_X11
    24 
    25 #define DEBUG_DYNAMIC_X11 0
    26 
    27 #include "SDL_x11dyn.h"
    28 
    29 #if DEBUG_DYNAMIC_X11
    30 #include <stdio.h>
    31 #endif
    32 
    33 #ifdef SDL_VIDEO_DRIVER_X11_DYNAMIC
    34 
    35 #include "SDL_name.h"
    36 #include "SDL_loadso.h"
    37 
    38 typedef struct
    39 {
    40     void *lib;
    41     const char *libname;
    42 } x11dynlib;
    43 
    44 #ifndef SDL_VIDEO_DRIVER_X11_DYNAMIC
    45 #define SDL_VIDEO_DRIVER_X11_DYNAMIC NULL
    46 #endif
    47 #ifndef SDL_VIDEO_DRIVER_X11_DYNAMIC_XEXT
    48 #define SDL_VIDEO_DRIVER_X11_DYNAMIC_XEXT NULL
    49 #endif
    50 #ifndef SDL_VIDEO_DRIVER_X11_DYNAMIC_XCURSOR
    51 #define SDL_VIDEO_DRIVER_X11_DYNAMIC_XCURSOR NULL
    52 #endif
    53 #ifndef SDL_VIDEO_DRIVER_X11_DYNAMIC_XINERAMA
    54 #define SDL_VIDEO_DRIVER_X11_DYNAMIC_XINERAMA NULL
    55 #endif
    56 #ifndef SDL_VIDEO_DRIVER_X11_DYNAMIC_XINPUT2
    57 #define SDL_VIDEO_DRIVER_X11_DYNAMIC_XINPUT2 NULL
    58 #endif
    59 #ifndef SDL_VIDEO_DRIVER_X11_DYNAMIC_XRANDR
    60 #define SDL_VIDEO_DRIVER_X11_DYNAMIC_XRANDR NULL
    61 #endif
    62 #ifndef SDL_VIDEO_DRIVER_X11_DYNAMIC_XSS
    63 #define SDL_VIDEO_DRIVER_X11_DYNAMIC_XSS NULL
    64 #endif
    65 #ifndef SDL_VIDEO_DRIVER_X11_DYNAMIC_XVIDMODE
    66 #define SDL_VIDEO_DRIVER_X11_DYNAMIC_XVIDMODE NULL
    67 #endif
    68 
    69 static x11dynlib x11libs[] = {
    70     {NULL, SDL_VIDEO_DRIVER_X11_DYNAMIC},
    71     {NULL, SDL_VIDEO_DRIVER_X11_DYNAMIC_XEXT},
    72     {NULL, SDL_VIDEO_DRIVER_X11_DYNAMIC_XCURSOR},
    73     {NULL, SDL_VIDEO_DRIVER_X11_DYNAMIC_XINERAMA},
    74     {NULL, SDL_VIDEO_DRIVER_X11_DYNAMIC_XINPUT2},
    75     {NULL, SDL_VIDEO_DRIVER_X11_DYNAMIC_XRANDR},
    76     {NULL, SDL_VIDEO_DRIVER_X11_DYNAMIC_XSS},
    77     {NULL, SDL_VIDEO_DRIVER_X11_DYNAMIC_XVIDMODE}
    78 };
    79 
    80 static void *
    81 X11_GetSym(const char *fnname, int *pHasModule)
    82 {
    83     int i;
    84     void *fn = NULL;
    85     for (i = 0; i < SDL_TABLESIZE(x11libs); i++) {
    86         if (x11libs[i].lib != NULL) {
    87             fn = SDL_LoadFunction(x11libs[i].lib, fnname);
    88             if (fn != NULL)
    89                 break;
    90         }
    91     }
    92 
    93 #if DEBUG_DYNAMIC_X11
    94     if (fn != NULL)
    95         printf("X11: Found '%s' in %s (%p)\n", fnname, x11libs[i].libname, fn);
    96     else
    97         printf("X11: Symbol '%s' NOT FOUND!\n", fnname);
    98 #endif
    99 
   100     if (fn == NULL)
   101         *pHasModule = 0;  /* kill this module. */
   102 
   103     return fn;
   104 }
   105 
   106 #endif /* SDL_VIDEO_DRIVER_X11_DYNAMIC */
   107 
   108 /* Define all the function pointers and wrappers... */
   109 #define SDL_X11_SYM(rc,fn,params,args,ret) SDL_DYNX11FN_##fn X11_##fn = NULL;
   110 #include "SDL_x11sym.h"
   111 
   112 /* Annoying varargs entry point... */
   113 #ifdef X_HAVE_UTF8_STRING
   114 SDL_DYNX11FN_XCreateIC X11_XCreateIC = NULL;
   115 SDL_DYNX11FN_XGetICValues X11_XGetICValues = NULL;
   116 #endif
   117 
   118 /* These SDL_X11_HAVE_* flags are here whether you have dynamic X11 or not. */
   119 #define SDL_X11_MODULE(modname) int SDL_X11_HAVE_##modname = 0;
   120 #include "SDL_x11sym.h"
   121 
   122 static int x11_load_refcount = 0;
   123 
   124 void
   125 SDL_X11_UnloadSymbols(void)
   126 {
   127     /* Don't actually unload if more than one module is using the libs... */
   128     if (x11_load_refcount > 0) {
   129         if (--x11_load_refcount == 0) {
   130             int i;
   131 
   132             /* set all the function pointers to NULL. */
   133 #define SDL_X11_MODULE(modname) SDL_X11_HAVE_##modname = 0;
   134 #define SDL_X11_SYM(rc,fn,params,args,ret) X11_##fn = NULL;
   135 #include "SDL_x11sym.h"
   136 
   137 #ifdef X_HAVE_UTF8_STRING
   138             X11_XCreateIC = NULL;
   139             X11_XGetICValues = NULL;
   140 #endif
   141 
   142 #ifdef SDL_VIDEO_DRIVER_X11_DYNAMIC
   143             for (i = 0; i < SDL_TABLESIZE(x11libs); i++) {
   144                 if (x11libs[i].lib != NULL) {
   145                     SDL_UnloadObject(x11libs[i].lib);
   146                     x11libs[i].lib = NULL;
   147                 }
   148             }
   149 #endif
   150         }
   151     }
   152 }
   153 
   154 /* returns non-zero if all needed symbols were loaded. */
   155 int
   156 SDL_X11_LoadSymbols(void)
   157 {
   158     int rc = 1;                 /* always succeed if not using Dynamic X11 stuff. */
   159 
   160     /* deal with multiple modules (dga, x11, etc) needing these symbols... */
   161     if (x11_load_refcount++ == 0) {
   162 #ifdef SDL_VIDEO_DRIVER_X11_DYNAMIC
   163         int i;
   164         int *thismod = NULL;
   165         for (i = 0; i < SDL_TABLESIZE(x11libs); i++) {
   166             if (x11libs[i].libname != NULL) {
   167                 x11libs[i].lib = SDL_LoadObject(x11libs[i].libname);
   168             }
   169         }
   170 
   171 #define SDL_X11_MODULE(modname) SDL_X11_HAVE_##modname = 1; /* default yes */
   172 #include "SDL_x11sym.h"
   173 
   174 #define SDL_X11_MODULE(modname) thismod = &SDL_X11_HAVE_##modname;
   175 #define SDL_X11_SYM(a,fn,x,y,z) X11_##fn = (SDL_DYNX11FN_##fn) X11_GetSym(#fn,thismod);
   176 #include "SDL_x11sym.h"
   177 
   178 #ifdef X_HAVE_UTF8_STRING
   179         X11_XCreateIC = (SDL_DYNX11FN_XCreateIC)
   180                         X11_GetSym("XCreateIC", &SDL_X11_HAVE_UTF8);
   181         X11_XGetICValues = (SDL_DYNX11FN_XGetICValues)
   182                         X11_GetSym("XGetICValues", &SDL_X11_HAVE_UTF8);
   183 #endif
   184 
   185         if (SDL_X11_HAVE_BASEXLIB) {
   186             /* all required symbols loaded. */
   187             SDL_ClearError();
   188         } else {
   189             /* in case something got loaded... */
   190             SDL_X11_UnloadSymbols();
   191             rc = 0;
   192         }
   193 
   194 #else  /* no dynamic X11 */
   195 
   196 #define SDL_X11_MODULE(modname) SDL_X11_HAVE_##modname = 1; /* default yes */
   197 #define SDL_X11_SYM(a,fn,x,y,z) X11_##fn = (SDL_DYNX11FN_##fn) fn;
   198 #include "SDL_x11sym.h"
   199 
   200 #ifdef X_HAVE_UTF8_STRING
   201         X11_XCreateIC = XCreateIC;
   202         X11_XGetICValues = XGetICValues;
   203 #endif
   204 #endif
   205     }
   206 
   207     return rc;
   208 }
   209 
   210 #endif /* SDL_VIDEO_DRIVER_X11 */
   211 
   212 /* vi: set ts=4 sw=4 expandtab: */