diff options
Diffstat (limited to 'xorg-server/hw/xfree86/x86emu/x86emu/prim_x86_gcc.h')
-rw-r--r-- | xorg-server/hw/xfree86/x86emu/x86emu/prim_x86_gcc.h | 79 |
1 files changed, 79 insertions, 0 deletions
diff --git a/xorg-server/hw/xfree86/x86emu/x86emu/prim_x86_gcc.h b/xorg-server/hw/xfree86/x86emu/x86emu/prim_x86_gcc.h new file mode 100644 index 000000000..5a443cdbf --- /dev/null +++ b/xorg-server/hw/xfree86/x86emu/x86emu/prim_x86_gcc.h @@ -0,0 +1,79 @@ +/**************************************************************************** +* +* Inline helpers for x86emu +* +* Copyright (C) 2008 Bart Trojanowski, Symbio Technologies, LLC +* +* ======================================================================== +* +* Permission to use, copy, modify, distribute, and sell this software and +* its documentation for any purpose is hereby granted without fee, +* provided that the above copyright notice appear in all copies and that +* both that copyright notice and this permission notice appear in +* supporting documentation, and that the name of the authors not be used +* in advertising or publicity pertaining to distribution of the software +* without specific, written prior permission. The authors makes no +* representations about the suitability of this software for any purpose. +* It is provided "as is" without express or implied warranty. +* +* THE AUTHORS DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, +* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO +* EVENT SHALL THE AUTHORS BE LIABLE FOR ANY SPECIAL, INDIRECT OR +* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF +* USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR +* OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR +* PERFORMANCE OF THIS SOFTWARE. +* +* ======================================================================== +* +* Language: GNU C +* Environment: GCC on i386 or x86-64 +* Developer: Bart Trojanowski +* +* Description: This file defines a few x86 macros that can be used by the +* emulator to execute native instructions. +* +* For PIC vs non-PIC code refer to: +* http://sam.zoy.org/blog/2007-04-13-shlib-with-non-pic-code-have-inline-assembly-and-pic-mix-well +* +****************************************************************************/ +#ifndef __X86EMU_PRIM_X86_GCC_H +#define __X86EMU_PRIM_X86_GCC_H + +#include "x86emu/types.h" + +#if !defined(__GNUC__) || !(defined (__i386__) || defined(__i386) || defined(__AMD64__) || defined(__x86_64__) || defined(__amd64__) || defined(__x86_64__)) +#error This file is intended to be used by gcc on i386 or x86-64 system +#endif + +#if defined(__PIC__) && defined(__i386__) + +#define X86EMU_HAS_HW_CPUID 1 +static inline void hw_cpuid (u32 *a, u32 *b, u32 *c, u32 *d) +{ + __asm__ __volatile__ ("pushl %%ebx \n\t" + "cpuid \n\t" + "movl %%ebx, %1 \n\t" + "popl %%ebx \n\t" + : "=a" (*a), "=r" (*b), + "=c" (*c), "=d" (*d) + : "a" (*a), "c" (*c) + : "cc"); +} + +#else // ! (__PIC__ && __i386__) + +#define x86EMU_HAS_HW_CPUID 1 +static inline void hw_cpuid (u32 *a, u32 *b, u32 *c, u32 *d) +{ + __asm__ __volatile__ ("cpuid" + : "=a" (*a), "=b" (*b), + "=c" (*c), "=d" (*d) + : "a" (*a), "c" (*c) + : "cc"); +} + +#endif // __PIC__ && __i386__ + + +#endif // __X86EMU_PRIM_X86_GCC_H |