Mercurial > sdl-ios-xcode
annotate src/thread/linux/clone.S @ 1133:609c060fd2a2
The MacOSX Carbon/Cocoa/X11 all in one library patch. Relevant emails:
To: SDL Developers <sdl@libsdl.org>
From: =?ISO-8859-1?Q?Anders_F_Bj=F6rklund?= <afb@algonet.se>
Date: Mon, 30 May 2005 23:29:04 +0200
Subject: [SDL] Mac OS X Video Drivers [patch]
I've updated/added the Carbon and X11 video drivers
to the Mac OS X port of SDL 1.2 (the CVS version),
and made the Cocoa driver and runtime *optional*.
The default is still Cocoa, and the "Quartz" driver.
But you can now also use "toolbox" for Carbon, and
"x11" for running with Apple's (or other) X11 server:
export SDL_VIDEODRIVER=x11
export SDL_VIDEO_GL_DRIVER=/usr/X11R6/lib/libGL.dylib
It also checks if the frameworks are available, by a:
#include <Carbon/Carbon.h> or #import <Cocoa/Cocoa.h>
(this should make it configure on plain Darwin as well?)
Here are the new configure targets:
--enable-video-cocoa use Cocoa/Quartz video driver default=yes
--enable-video-carbon use Carbon/QuickDraw video driver default=yes
--enable-video-x11 use X11 video driver default=no
./configure --enable-video-cocoa --enable-video-carbon
--enable-video-x11 \
--x-includes=/usr/X11R6/include --x-libraries=/usr/X11R6/lib
The Carbon version is just an updated version of the old
SDL driver for Mac OS 9, and could probably be improved...
(but it does work, including the Carbon version of SDLmain)
If you disable cocoa, you can run with -framework Carbon only,
and the C version of SDL_main.c. And if you disable carbon too,
you can still use the X11 version which doesn't require SDLmain.
I updated the DrawSprocket version, but did not include it.
(no blitters or VRAM GWorlds etc. available on OS X anyway)
Besides for Mac OS 9, I don't think there's any use for it ?
And note that any performance on Mac OS X equals OpenGL anyway...
You can get "fair" software SDL results on captured CG displays,
but for decent frame rates you need to be using GL for rendering.
Finally, here is the patch itself:
http://www.algonet.se/~afb/SDL-12CVS-macvideo.patch
--anders
PS. It says "video", but as usual it applies to mouse/keyboard too.
------
To: A list for developers using the SDL library <sdl@libsdl.org>
From: =?ISO-8859-1?Q?Anders_F_Bj=F6rklund?= <afb@algonet.se>
Date: Sun, 4 Sep 2005 10:02:15 +0200
Subject: [SDL] Updated Mac patch
Updated the previous Mac patch to disable Carbon by default.
Also "fixed" the SDL.spec again, so that it builds on Darwin.
http://www.algonet.se/~afb/SDL-1.2.9-mac.patch
Also applied fine to SDL12 CVS, when I tried it.
| author | Ryan C. Gordon <icculus@icculus.org> |
|---|---|
| date | Thu, 08 Sep 2005 06:16:14 +0000 |
| parents | 974ba6ae0fa3 |
| children | c9b51268668f |
| rev | line source |
|---|---|
| 0 | 1 |
| 2 /* Taken with thanks from LinuxThreads 0.6 */ | |
| 3 | |
|
1035
974ba6ae0fa3
Date: Wed, 26 Jan 2005 13:37:09 GMT
Sam Lantinga <slouken@libsdl.org>
parents:
0
diff
changeset
|
4 /* This is no longer necessary with glibc-2.1, which has its own clone() */ |
| 0 | 5 #ifdef linux |
| 6 /* Look to see if glibc is available, and if so, what version */ | |
| 7 #include <features.h> | |
| 8 | |
| 9 #if (__GLIBC__ > 2) || ((__GLIBC__ == 2) && (__GLIBC_MINOR__ >= 1)) | |
| 10 #define HAVE_CLONE | |
| 11 #endif /* glibc 2.1 or newer */ | |
| 12 #endif /* linux */ | |
| 13 | |
| 14 #if defined(linux) && !defined(SDL_USE_PTHREADS) && !defined(HAVE_CLONE) | |
| 15 | |
| 16 #if defined(__i386__) | |
| 17 /************************************************************************/ | |
| 18 /* Copyright (C) 1996, 1997 Free Software Foundation, Inc. | |
| 19 Contributed by Richard Henderson (rth@tamu.edu) | |
| 20 | |
| 21 The GNU C Library is free software; you can redistribute it and/or | |
| 22 modify it under the terms of the GNU Library General Public License as | |
| 23 published by the Free Software Foundation; either version 2 of the | |
| 24 License, or (at your option) any later version. | |
| 25 | |
| 26 The GNU C Library is distributed in the hope that it will be useful, | |
| 27 but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 28 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 29 Library General Public License for more details. | |
| 30 | |
| 31 You should have received a copy of the GNU Library General Public | |
| 32 License along with the GNU C Library; see the file COPYING.LIB. If | |
| 33 not, write to the Free Software Foundation, Inc., 675 Mass Ave, | |
| 34 | |
| 35 #ifdef SAVE_RCSID | |
| 36 static char rcsid = | |
| 37 "@(#) $Id$"; | |
| 38 #endif | |
| 39 Cambridge, MA 02139, USA. */ | |
| 40 | |
| 41 /* clone() is even more special than fork() as it mucks with stacks | |
| 42 and invokes a function in the right context after its all over. */ | |
| 43 | |
| 44 #include <asm/errno.h> | |
| 45 #include <asm/unistd.h> | |
| 46 | |
| 47 /* int clone(int (*fn)(void *arg), void *child_stack, int flags, void *arg); */ | |
| 48 | |
| 49 .text | |
| 50 .align 4 | |
| 51 .globl __clone | |
| 52 .type __clone,@function | |
| 53 .weak clone | |
| 54 clone = __clone | |
| 55 __clone: | |
| 56 /* Sanity check arguments. */ | |
| 57 movl $-EINVAL,%eax | |
| 58 movl 4(%esp),%ecx /* no NULL function pointers */ | |
| 59 testl %ecx,%ecx | |
| 60 jz syscall_error | |
| 61 movl 8(%esp),%ecx /* no NULL stack pointers */ | |
| 62 testl %ecx,%ecx | |
| 63 jz syscall_error | |
| 64 | |
| 65 /* Insert the argument onto the new stack. */ | |
| 66 subl $8,%ecx | |
| 67 movl 16(%esp),%eax | |
| 68 movl %eax,4(%ecx) | |
| 69 | |
| 70 /* Save the function pointer as the zeroth argument. */ | |
| 71 /* It will be popped off in the child in the ebx frobbing below. */ | |
| 72 movl 4(%esp),%eax | |
| 73 movl %eax,0(%ecx) | |
| 74 | |
| 75 /* Do the system call */ | |
| 76 pushl %ebx | |
| 77 movl 16(%esp),%ebx | |
| 78 movl $__NR_clone,%eax | |
| 79 int $0x80 | |
| 80 popl %ebx | |
| 81 | |
| 82 test %eax,%eax | |
| 83 jl syscall_error | |
| 84 jz thread_start | |
| 85 | |
| 86 ret | |
| 87 | |
| 88 syscall_error: | |
| 89 negl %eax | |
| 90 pushl %eax | |
| 91 #ifdef __PIC__ | |
| 92 call __errno_location@PLT | |
| 93 #else | |
| 94 call __errno_location | |
| 95 #endif | |
| 96 popl 0(%eax) | |
| 97 movl $-1, %eax | |
| 98 ret | |
| 99 | |
| 100 thread_start: | |
| 101 subl %ebp,%ebp /* terminate the stack frame */ | |
| 102 call *%ebx | |
| 103 pushl %eax | |
| 104 #ifdef __PIC__ | |
| 105 call _exit@PLT | |
| 106 #else | |
| 107 call _exit | |
| 108 #endif | |
| 109 /************************************************************************/ | |
| 110 #elif defined(sparc) | |
| 111 /************************************************************************/ | |
| 112 /* Copyright (C) 1996, 1997 Free Software Foundation, Inc. | |
| 113 Contributed by Miguel de Icaza (miguel@nuclecu.unam.mx) | |
| 114 Based on code written for the Intel by Richard | |
| 115 Henderson (rth@tamu.edu) | |
| 116 | |
| 117 The GNU C Library is free software; you can redistribute it and/or | |
| 118 modify it under the terms of the GNU Library General Public License as | |
| 119 published by the Free Software Foundation; either version 2 of the | |
| 120 License, or (at your option) any later version. | |
| 121 | |
| 122 The GNU C Library is distributed in the hope that it will be useful, | |
| 123 but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 124 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 125 Library General Public License for more details. | |
| 126 | |
| 127 You should have received a copy of the GNU Library General Public | |
| 128 License along with the GNU C Library; see the file COPYING.LIB. If | |
| 129 not, write to the Free Software Foundation, Inc., 675 Mass Ave, | |
| 130 Cambridge, MA 02139, USA. */ | |
| 131 | |
| 132 /* clone() is even more special than fork() as it mucks with stacks | |
| 133 and invokes a function in the right context after its all over. */ | |
| 134 | |
| 135 #include <asm/errno.h> | |
| 136 #include <asm/unistd.h> | |
| 137 | |
| 138 /* int clone(int (*fn)(void *arg), void *child_stack, int flags, void *arg); */ | |
| 139 | |
| 140 .text | |
| 141 .align 4 | |
| 142 .globl __clone | |
| 143 .type __clone,@function | |
| 144 .weak clone | |
| 145 clone = __clone | |
| 146 __clone: | |
| 147 save %sp,-96,%sp | |
| 148 /* sanity check arguments */ | |
| 149 tst %i0 | |
| 150 be __clone_syscall_error | |
| 151 tst %i1 | |
| 152 be __clone_syscall_error | |
| 153 nop | |
| 154 | |
| 155 /* Do the system call */ | |
| 156 mov %i1,%o1 | |
| 157 mov %i2,%o0 | |
| 158 set __NR_clone,%g1 | |
| 159 ta 0x10 | |
| 160 bcs __clone_syscall_error | |
| 161 tst %o1 | |
| 162 bne __thread_start | |
| 163 nop | |
| 164 mov %o0,%i0 | |
| 165 ret | |
| 166 restore | |
| 167 | |
| 168 __clone_syscall_error: | |
| 169 call __errno_location | |
| 170 set EINVAL,%i0 | |
| 171 st %i0,[%o0] | |
| 172 mov -1,%i0 | |
| 173 ret | |
| 174 restore | |
| 175 | |
| 176 __thread_start: | |
| 177 call %i0 | |
| 178 mov %i3,%o0 | |
| 179 call _exit,0 | |
| 180 nop | |
| 181 /************************************************************************/ | |
| 182 #else | |
| 183 #error "Unknown Linux architecture" | |
| 184 #endif | |
| 185 | |
| 186 #endif /* Linux && ! SDL_USE_PTHREADS */ |