view src/joystick/SDL_joystick_c.h @ 4137:be12463f31ea SDL-1.2

Date: Sat, 2 Feb 2008 22:08:05 +0100 From: Marcus von Appen To: sdl@lists.libsdl.org Subject: [SDL] [Patch] SDL-1.2 SDL_revcpy() asm patch for the cld flag Hi, as reported through the FreeBSD bug tracking system in SDL 1.2.13 (and in the 1.2 branch, if I see that correctly) the SDL_revcpy() macro sets the direction flag (std), but does not clear it afterwards (cld), which is wrong according to the GCC and SYS V specs. This can cause some weird side effects, which in turn can lead to memory corruption. You can read the full report with a detailed description and test program at http://www.freebsd.org/cgi/query-pr.cgi?pr=ports/120052 Attached is the submitted patch, which fixes the issue. Regards Marcus
author Ryan C. Gordon <icculus@icculus.org>
date Mon, 04 Feb 2008 17:22:56 +0000
parents d910939febfa
children 782fd950bd46 c121d94672cb a1b03ba2fcd0
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/*
    SDL - Simple DirectMedia Layer
    Copyright (C) 1997-2006 Sam Lantinga

    This library is free software; you can redistribute it and/or
    modify it under the terms of the GNU Lesser General Public
    License as published by the Free Software Foundation; either
    version 2.1 of the License, or (at your option) any later version.

    This library is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
    Lesser General Public License for more details.

    You should have received a copy of the GNU Lesser General Public
    License along with this library; if not, write to the Free Software
    Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA

    Sam Lantinga
    slouken@libsdl.org
*/
#include "SDL_config.h"

/* Useful functions and variables from SDL_joystick.c */
#include "SDL_joystick.h"

/* The number of available joysticks on the system */
extern Uint8 SDL_numjoysticks;

/* Internal event queueing functions */
extern int SDL_PrivateJoystickAxis(SDL_Joystick *joystick,
                                   Uint8 axis, Sint16 value);
extern int SDL_PrivateJoystickBall(SDL_Joystick *joystick,
                                   Uint8 ball, Sint16 xrel, Sint16 yrel);
extern int SDL_PrivateJoystickHat(SDL_Joystick *joystick,
                                 Uint8 hat, Uint8 value);
extern int SDL_PrivateJoystickButton(SDL_Joystick *joystick,
                                     Uint8 button, Uint8 state);