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/****************************************************************************
*
* 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
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