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Diffstat (limited to '3rdparty/SDL2/src/dynapi/SDL_dynapi.c')
-rw-r--r--3rdparty/SDL2/src/dynapi/SDL_dynapi.c319
1 files changed, 0 insertions, 319 deletions
diff --git a/3rdparty/SDL2/src/dynapi/SDL_dynapi.c b/3rdparty/SDL2/src/dynapi/SDL_dynapi.c
deleted file mode 100644
index c26baf379c0..00000000000
--- a/3rdparty/SDL2/src/dynapi/SDL_dynapi.c
+++ /dev/null
@@ -1,319 +0,0 @@
-/*
- Simple DirectMedia Layer
- Copyright (C) 1997-2016 Sam Lantinga <slouken@libsdl.org>
-
- This software is provided 'as-is', without any express or implied
- warranty. In no event will the authors be held liable for any damages
- arising from the use of this software.
-
- Permission is granted to anyone to use this software for any purpose,
- including commercial applications, and to alter it and redistribute it
- freely, subject to the following restrictions:
-
- 1. The origin of this software must not be misrepresented; you must not
- claim that you wrote the original software. If you use this software
- in a product, an acknowledgment in the product documentation would be
- appreciated but is not required.
- 2. Altered source versions must be plainly marked as such, and must not be
- misrepresented as being the original software.
- 3. This notice may not be removed or altered from any source distribution.
-*/
-
-#include "SDL_config.h"
-#include "SDL_dynapi.h"
-
-#if SDL_DYNAMIC_API
-
-#include "SDL.h"
-
-/* !!! FIXME: Shouldn't these be included in SDL.h? */
-#include "SDL_shape.h"
-#include "SDL_syswm.h"
-
-/* This is the version of the dynamic API. This doesn't match the SDL version
- and should not change until there's been a major revamp in API/ABI.
- So 2.0.5 adds functions over 2.0.4? This number doesn't change;
- the sizeof (jump_table) changes instead. But 2.1.0 changes how a function
- works in an incompatible way or removes a function? This number changes,
- since sizeof (jump_table) isn't sufficient anymore. It's likely
- we'll forget to bump every time we add a function, so this is the
- failsafe switch for major API change decisions. Respect it and use it
- sparingly. */
-#define SDL_DYNAPI_VERSION 1
-
-static void SDL_InitDynamicAPI(void);
-
-
-/* BE CAREFUL CALLING ANY SDL CODE IN HERE, IT WILL BLOW UP.
- Even self-contained stuff might call SDL_Error and break everything. */
-
-
-/* behold, the macro salsa! */
-
-/* !!! FIXME: ...disabled...until we write it. :) */
-#define DISABLE_JUMP_MAGIC 1
-
-#if DISABLE_JUMP_MAGIC
-/* Can't use the macro for varargs nonsense. This is atrocious. */
-#define SDL_DYNAPI_VARARGS_LOGFN(_static, name, initcall, logname, prio) \
- _static void SDL_Log##logname##name(int category, SDL_PRINTF_FORMAT_STRING const char *fmt, ...) { \
- va_list ap; initcall; va_start(ap, fmt); \
- jump_table.SDL_LogMessageV(category, SDL_LOG_PRIORITY_##prio, fmt, ap); \
- va_end(ap); \
- }
-
-#define SDL_DYNAPI_VARARGS(_static, name, initcall) \
- _static int SDL_SetError##name(SDL_PRINTF_FORMAT_STRING const char *fmt, ...) { \
- char buf[512]; /* !!! FIXME: dynamic allocation */ \
- va_list ap; initcall; va_start(ap, fmt); \
- jump_table.SDL_vsnprintf(buf, sizeof (buf), fmt, ap); \
- va_end(ap); \
- return jump_table.SDL_SetError("%s", buf); \
- } \
- _static int SDL_sscanf##name(const char *buf, SDL_SCANF_FORMAT_STRING const char *fmt, ...) { \
- int retval; va_list ap; initcall; va_start(ap, fmt); \
- retval = jump_table.SDL_vsscanf(buf, fmt, ap); \
- va_end(ap); \
- return retval; \
- } \
- _static int SDL_snprintf##name(SDL_OUT_Z_CAP(maxlen) char *buf, size_t maxlen, SDL_PRINTF_FORMAT_STRING const char *fmt, ...) { \
- int retval; va_list ap; initcall; va_start(ap, fmt); \
- retval = jump_table.SDL_vsnprintf(buf, maxlen, fmt, ap); \
- va_end(ap); \
- return retval; \
- } \
- _static void SDL_Log##name(SDL_PRINTF_FORMAT_STRING const char *fmt, ...) { \
- va_list ap; initcall; va_start(ap, fmt); \
- jump_table.SDL_LogMessageV(SDL_LOG_CATEGORY_APPLICATION, SDL_LOG_PRIORITY_INFO, fmt, ap); \
- va_end(ap); \
- } \
- _static void SDL_LogMessage##name(int category, SDL_LogPriority priority, SDL_PRINTF_FORMAT_STRING const char *fmt, ...) { \
- va_list ap; initcall; va_start(ap, fmt); \
- jump_table.SDL_LogMessageV(category, priority, fmt, ap); \
- va_end(ap); \
- } \
- SDL_DYNAPI_VARARGS_LOGFN(_static, name, initcall, Verbose, VERBOSE) \
- SDL_DYNAPI_VARARGS_LOGFN(_static, name, initcall, Debug, DEBUG) \
- SDL_DYNAPI_VARARGS_LOGFN(_static, name, initcall, Info, INFO) \
- SDL_DYNAPI_VARARGS_LOGFN(_static, name, initcall, Warn, WARN) \
- SDL_DYNAPI_VARARGS_LOGFN(_static, name, initcall, Error, ERROR) \
- SDL_DYNAPI_VARARGS_LOGFN(_static, name, initcall, Critical, CRITICAL)
-#endif
-
-
-/* Typedefs for function pointers for jump table, and predeclare funcs */
-/* The DEFAULT funcs will init jump table and then call real function. */
-/* The REAL funcs are the actual functions, name-mangled to not clash. */
-#define SDL_DYNAPI_PROC(rc,fn,params,args,ret) \
- typedef rc (*SDL_DYNAPIFN_##fn) params; \
- static rc fn##_DEFAULT params; \
- extern rc fn##_REAL params;
-#include "SDL_dynapi_procs.h"
-#undef SDL_DYNAPI_PROC
-
-/* The jump table! */
-typedef struct {
- #define SDL_DYNAPI_PROC(rc,fn,params,args,ret) SDL_DYNAPIFN_##fn fn;
- #include "SDL_dynapi_procs.h"
- #undef SDL_DYNAPI_PROC
-} SDL_DYNAPI_jump_table;
-
-/* Predeclare the default functions for initializing the jump table. */
-#define SDL_DYNAPI_PROC(rc,fn,params,args,ret) static rc fn##_DEFAULT params;
-#include "SDL_dynapi_procs.h"
-#undef SDL_DYNAPI_PROC
-
-/* The actual jump table. */
-static SDL_DYNAPI_jump_table jump_table = {
- #define SDL_DYNAPI_PROC(rc,fn,params,args,ret) fn##_DEFAULT,
- #include "SDL_dynapi_procs.h"
- #undef SDL_DYNAPI_PROC
-};
-
-/* Default functions init the function table then call right thing. */
-#if DISABLE_JUMP_MAGIC
-#define SDL_DYNAPI_PROC(rc,fn,params,args,ret) \
- static rc fn##_DEFAULT params { \
- SDL_InitDynamicAPI(); \
- ret jump_table.fn args; \
- }
-#define SDL_DYNAPI_PROC_NO_VARARGS 1
-#include "SDL_dynapi_procs.h"
-#undef SDL_DYNAPI_PROC
-#undef SDL_DYNAPI_PROC_NO_VARARGS
-SDL_DYNAPI_VARARGS(static, _DEFAULT, SDL_InitDynamicAPI())
-#else
-/* !!! FIXME: need the jump magic. */
-#error Write me.
-#endif
-
-/* Public API functions to jump into the jump table. */
-#if DISABLE_JUMP_MAGIC
-#define SDL_DYNAPI_PROC(rc,fn,params,args,ret) \
- rc fn params { ret jump_table.fn args; }
-#define SDL_DYNAPI_PROC_NO_VARARGS 1
-#include "SDL_dynapi_procs.h"
-#undef SDL_DYNAPI_PROC
-#undef SDL_DYNAPI_PROC_NO_VARARGS
-SDL_DYNAPI_VARARGS(,,)
-#else
-/* !!! FIXME: need the jump magic. */
-#error Write me.
-#endif
-
-
-
-/* Here's the exported entry point that fills in the jump table. */
-/* Use specific types when an "int" might suffice to keep this sane. */
-typedef Sint32 (SDLCALL *SDL_DYNAPI_ENTRYFN)(Uint32 apiver, void *table, Uint32 tablesize);
-extern DECLSPEC Sint32 SDLCALL SDL_DYNAPI_entry(Uint32, void *, Uint32);
-
-Sint32
-SDL_DYNAPI_entry(Uint32 apiver, void *table, Uint32 tablesize)
-{
- SDL_DYNAPI_jump_table *output_jump_table = (SDL_DYNAPI_jump_table *) table;
-
- if (apiver != SDL_DYNAPI_VERSION) {
- /* !!! FIXME: can maybe handle older versions? */
- return -1; /* not compatible. */
- } else if (tablesize > sizeof (jump_table)) {
- return -1; /* newer version of SDL with functions we can't provide. */
- }
-
- /* Init our jump table first. */
- #define SDL_DYNAPI_PROC(rc,fn,params,args,ret) jump_table.fn = fn##_REAL;
- #include "SDL_dynapi_procs.h"
- #undef SDL_DYNAPI_PROC
-
- /* Then the external table... */
- if (output_jump_table != &jump_table) {
- jump_table.SDL_memcpy(output_jump_table, &jump_table, tablesize);
- }
-
- /* Safe to call SDL functions now; jump table is initialized! */
-
- return 0; /* success! */
-}
-
-
-/* Obviously we can't use SDL_LoadObject() to load SDL. :) */
-/* Also obviously, we never close the loaded library. */
-#if defined(WIN32) || defined(_WIN32) || defined(__CYGWIN__)
-#ifndef WIN32_LEAN_AND_MEAN
-#define WIN32_LEAN_AND_MEAN 1
-#endif
-#include <windows.h>
-static SDL_INLINE void *get_sdlapi_entry(const char *fname, const char *sym)
-{
- HANDLE lib = LoadLibraryA(fname);
- void *retval = NULL;
- if (lib) {
- retval = GetProcAddress(lib, sym);
- if (retval == NULL) {
- FreeLibrary(lib);
- }
- }
- return retval;
-}
-
-#elif defined(__HAIKU__)
-#include <os/kernel/image.h>
-static SDL_INLINE void *get_sdlapi_entry(const char *fname, const char *sym)
-{
- image_id lib = load_add_on(fname);
- void *retval = NULL;
- if (lib >= 0) {
- if (get_image_symbol(lib, sym, B_SYMBOL_TYPE_TEXT, &retval) != B_NO_ERROR) {
- unload_add_on(lib);
- retval = NULL;
- }
- }
- return retval;
-}
-#elif defined(unix) || defined(__unix__) || defined(__APPLE__)
-#include <dlfcn.h>
-static SDL_INLINE void *get_sdlapi_entry(const char *fname, const char *sym)
-{
- void *lib = dlopen(fname, RTLD_NOW | RTLD_LOCAL);
- void *retval = NULL;
- if (lib != NULL) {
- retval = dlsym(lib, sym);
- if (retval == NULL) {
- dlclose(lib);
- }
- }
- return retval;
-}
-#else
-#error Please define your platform.
-#endif
-
-
-static void
-SDL_InitDynamicAPILocked(void)
-{
- const char *libname = SDL_getenv_REAL("SDL_DYNAMIC_API");
- SDL_DYNAPI_ENTRYFN entry = SDL_DYNAPI_entry; /* funcs from here by default. */
-
- if (libname) {
- entry = (SDL_DYNAPI_ENTRYFN) get_sdlapi_entry(libname, "SDL_DYNAPI_entry");
- if (!entry) {
- /* !!! FIXME: fail to startup here instead? */
- /* !!! FIXME: definitely warn user. */
- /* Just fill in the function pointers from this library. */
- entry = SDL_DYNAPI_entry;
- }
- }
-
- if (entry(SDL_DYNAPI_VERSION, &jump_table, sizeof (jump_table)) < 0) {
- /* !!! FIXME: fail to startup here instead? */
- /* !!! FIXME: definitely warn user. */
- /* Just fill in the function pointers from this library. */
- if (entry != SDL_DYNAPI_entry) {
- if (!SDL_DYNAPI_entry(SDL_DYNAPI_VERSION, &jump_table, sizeof (jump_table))) {
- /* !!! FIXME: now we're screwed. Should definitely abort now. */
- }
- }
- }
-
- /* we intentionally never close the newly-loaded lib, of course. */
-}
-
-static void
-SDL_InitDynamicAPI(void)
-{
- /* So the theory is that every function in the jump table defaults to
- * calling this function, and then replaces itself with a version that
- * doesn't call this function anymore. But it's possible that, in an
- * extreme corner case, you can have a second thread hit this function
- * while the jump table is being initialized by the first.
- * In this case, a spinlock is really painful compared to what spinlocks
- * _should_ be used for, but this would only happen once, and should be
- * insanely rare, as you would have to spin a thread outside of SDL (as
- * SDL_CreateThread() would also call this function before building the
- * new thread).
- */
- static SDL_bool already_initialized = SDL_FALSE;
-
- /* SDL_AtomicLock calls SDL mutex functions to emulate if
- SDL_ATOMIC_DISABLED, which we can't do here, so in such a
- configuration, you're on your own. */
- #if !SDL_ATOMIC_DISABLED
- static SDL_SpinLock lock = 0;
- SDL_AtomicLock_REAL(&lock);
- #endif
-
- if (!already_initialized) {
- SDL_InitDynamicAPILocked();
- already_initialized = SDL_TRUE;
- }
-
- #if !SDL_ATOMIC_DISABLED
- SDL_AtomicUnlock_REAL(&lock);
- #endif
-}
-
-#endif /* SDL_DYNAMIC_API */
-
-/* vi: set ts=4 sw=4 expandtab: */
-