repositories / deb_xorg-server.git / blame
| Commit | Line | Data |
|---|---|---|
| a09e091a JB |
1 | /**************************************************************************** |
| 2 | * | |
| 3 | * Inline helpers for x86emu | |
| 4 | * | |
| 5 | * Copyright (C) 2008 Bart Trojanowski, Symbio Technologies, LLC | |
| 6 | * | |
| 7 | * ======================================================================== | |
| 8 | * | |
| 9 | * Permission to use, copy, modify, distribute, and sell this software and | |
| 10 | * its documentation for any purpose is hereby granted without fee, | |
| 11 | * provided that the above copyright notice appear in all copies and that | |
| 12 | * both that copyright notice and this permission notice appear in | |
| 13 | * supporting documentation, and that the name of the authors not be used | |
| 14 | * in advertising or publicity pertaining to distribution of the software | |
| 15 | * without specific, written prior permission. The authors makes no | |
| 16 | * representations about the suitability of this software for any purpose. | |
| 17 | * It is provided "as is" without express or implied warranty. | |
| 18 | * | |
| 19 | * THE AUTHORS DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, | |
| 20 | * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO | |
| 21 | * EVENT SHALL THE AUTHORS BE LIABLE FOR ANY SPECIAL, INDIRECT OR | |
| 22 | * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF | |
| 23 | * USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR | |
| 24 | * OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR | |
| 25 | * PERFORMANCE OF THIS SOFTWARE. | |
| 26 | * | |
| 27 | * ======================================================================== | |
| 28 | * | |
| 29 | * Language: GNU C | |
| 30 | * Environment: GCC on i386 or x86-64 | |
| 31 | * Developer: Bart Trojanowski | |
| 32 | * | |
| 33 | * Description: This file defines a few x86 macros that can be used by the | |
| 34 | * emulator to execute native instructions. | |
| 35 | * | |
| 36 | * For PIC vs non-PIC code refer to: | |
| 37 | * http://sam.zoy.org/blog/2007-04-13-shlib-with-non-pic-code-have-inline-assembly-and-pic-mix-well | |
| 38 | * | |
| 39 | ****************************************************************************/ | |
| 40 | #ifndef __X86EMU_PRIM_X86_GCC_H | |
| 41 | #define __X86EMU_PRIM_X86_GCC_H | |
| 42 | ||
| 43 | #include "x86emu/types.h" | |
| 44 | ||
| 45 | #if !defined(__GNUC__) || !(defined (__i386__) || defined(__i386) || defined(__AMD64__) || defined(__amd64__)) | |
| 46 | #error This file is intended to be used by gcc on i386 or x86-64 system | |
| 47 | #endif | |
| 48 | ||
| 49 | #if defined(__PIC__) && defined(__i386__) | |
| 50 | ||
| 51 | #define X86EMU_HAS_HW_CPUID 1 | |
| 52 | static inline void | |
| 53 | hw_cpuid(u32 * a, u32 * b, u32 * c, u32 * d) | |
| 54 | { | |
| 55 | __asm__ __volatile__("pushl %%ebx \n\t" | |
| 56 | "cpuid \n\t" | |
| 57 | "movl %%ebx, %1 \n\t" | |
| 58 | "popl %%ebx \n\t":"=a"(*a), "=r"(*b), | |
| 59 | "=c"(*c), "=d"(*d) | |
| 60 | :"a"(*a), "c"(*c) | |
| 61 | :"cc"); | |
| 62 | } | |
| 63 | ||
| 64 | #else /* ! (__PIC__ && __i386__) */ | |
| 65 | ||
| 66 | #define x86EMU_HAS_HW_CPUID 1 | |
| 67 | static inline void | |
| 68 | hw_cpuid(u32 * a, u32 * b, u32 * c, u32 * d) | |
| 69 | { | |
| 70 | __asm__ __volatile__("cpuid":"=a"(*a), "=b"(*b), "=c"(*c), "=d"(*d) | |
| 71 | :"a"(*a), "c"(*c) | |
| 72 | :"cc"); | |
| 73 | } | |
| 74 | ||
| 75 | #endif /* __PIC__ && __i386__ */ | |
| 76 | ||
| 77 | #endif /* __X86EMU_PRIM_X86_GCC_H */ |