| 1 | /****************************************************************************
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| 2 | *
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| 3 | * Inline helpers for x86emu
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| 4 | *
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| 5 | * Copyright (C) 2008 Bart Trojanowski, Symbio Technologies, LLC
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| 6 | *
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| 7 | * ========================================================================
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| 8 | *
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| 9 | * Permission to use, copy, modify, distribute, and sell this software and
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| 10 | * its documentation for any purpose is hereby granted without fee,
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| 11 | * provided that the above copyright notice appear in all copies and that
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| 12 | * both that copyright notice and this permission notice appear in
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| 13 | * supporting documentation, and that the name of the authors not be used
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| 14 | * in advertising or publicity pertaining to distribution of the software
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| 15 | * without specific, written prior permission. The authors makes no
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| 16 | * representations about the suitability of this software for any purpose.
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| 17 | * It is provided "as is" without express or implied warranty.
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| 18 | *
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| 19 | * THE AUTHORS DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
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| 20 | * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
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| 21 | * EVENT SHALL THE AUTHORS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
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| 22 | * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF
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| 23 | * USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
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| 24 | * OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
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| 25 | * PERFORMANCE OF THIS SOFTWARE.
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| 26 | *
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| 27 | * ========================================================================
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| 28 | *
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| 29 | * Language: GNU C
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| 30 | * Environment: GCC on i386 or x86-64
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| 31 | * Developer: Bart Trojanowski
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| 32 | *
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| 33 | * Description: This file defines a few x86 macros that can be used by the
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| 34 | * emulator to execute native instructions.
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| 35 | *
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| 36 | * For PIC vs non-PIC code refer to:
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| 37 | * http://sam.zoy.org/blog/2007-04-13-shlib-with-non-pic-code-have-inline-assembly-and-pic-mix-well
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| 38 | *
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| 39 | ****************************************************************************/
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| 40 | #ifndef __X86EMU_PRIM_X86_GCC_H
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| 41 | #define __X86EMU_PRIM_X86_GCC_H
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| 42 |
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| 43 | #include "x86emu/types.h"
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| 44 |
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| 45 | #if !defined(__GNUC__) || !(defined (__i386__) || defined(__i386) || defined(__AMD64__) || defined(__amd64__))
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| 46 | #error This file is intended to be used by gcc on i386 or x86-64 system
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| 47 | #endif
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| 48 |
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| 49 | #if defined(__PIC__) && defined(__i386__)
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| 50 |
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| 51 | #define X86EMU_HAS_HW_CPUID 1
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| 52 | static inline void hw_cpuid (u32 *a, u32 *b, u32 *c, u32 *d)
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| 53 | {
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| 54 | __asm__ __volatile__ ("pushl %%ebx \n\t"
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| 55 | "cpuid \n\t"
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| 56 | "movl %%ebx, %1 \n\t"
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| 57 | "popl %%ebx \n\t"
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| 58 | : "=a" (*a), "=r" (*b),
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| 59 | "=c" (*c), "=d" (*d)
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| 60 | : "a" (*a), "c" (*c)
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| 61 | : "cc");
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| 62 | }
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| 63 |
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| 64 | #else /* ! (__PIC__ && __i386__) */
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| 65 |
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| 66 | #define x86EMU_HAS_HW_CPUID 1
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| 67 | static inline void hw_cpuid (u32 *a, u32 *b, u32 *c, u32 *d)
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| 68 | {
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| 69 | __asm__ __volatile__ ("cpuid"
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| 70 | : "=a" (*a), "=b" (*b),
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| 71 | "=c" (*c), "=d" (*d)
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| 72 | : "a" (*a), "c" (*c)
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| 73 | : "cc");
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| 74 | }
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| 75 |
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| 76 | #endif /* __PIC__ && __i386__ */
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| 77 |
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| 78 |
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| 79 | #endif /* __X86EMU_PRIM_X86_GCC_H */
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