unistack-org/cloudinit
4
0
Fork 0
Code Issues 1 Pull Requests Packages Projects Releases Wiki Activity
f24b0e886f
cloudinit/vendor/github.com/sigma/vmw-guestinfo/include/x86cpuid_asm.h
Vasiliy Tolstov 414957d985 fix build 
Signed-off-by: Vasiliy Tolstov <v.tolstov@selfip.ru>
2015-11-09 09:08:44 +00:00

456 lines
9.5 KiB
C
Raw Blame History

/*********************************************************
* Copyright (C) 2003-2015 VMware, Inc. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as published
* by the Free Software Foundation version 2.1 and no later version.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the Lesser GNU General Public
* License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
*********************************************************/
/*********************************************************
* The contents of this file are subject to the terms of the Common
* Development and Distribution License (the "License") version 1.0
* and no later version. You may not use this file except in
* compliance with the License.
*
* You can obtain a copy of the License at
* http://www.opensource.org/licenses/cddl1.php
*
* See the License for the specific language governing permissions
* and limitations under the License.
*
*********************************************************/
/*
* x86cpuid_asm.h
*
* CPUID-related assembly functions.
*/
#ifndef _X86CPUID_ASM_H_
#define _X86CPUID_ASM_H_
#include "vm_basic_asm.h"
#include "x86cpuid.h"
/*
* x86-64 windows doesn't support inline asm so we have to use these
* intrinsic functions defined in the compiler. Not all of these are well
* documented. There is an array in the compiler dll (c1.dll) which has
* an array of the names of all the intrinsics minus the leading
* underscore. Searching around in the ntddk.h file can also be helpful.
*
* The declarations for the intrinsic functions were taken from the DDK.
* Our declarations must match the ddk's otherwise the 64-bit c++ compiler
* will complain about second linkage of the intrinsic functions.
* We define the intrinsic using the basic types corresponding to the
* Windows typedefs. This avoids having to include windows header files
* to get to the windows types.
*/
#ifdef _MSC_VER
#ifdef __cplusplus
extern "C" {
#endif
#ifdef VM_X86_64
/*
* intrinsic functions only supported by x86-64 windows as of 2k3sp1
*/
void __cpuid(int regs[4], int eax);
#pragma intrinsic(__cpuid)
#endif /* VM_X86_64 */
#ifdef __cplusplus
}
#endif
#endif /* _MSC_VER */
#ifdef __GNUC__ // {
/*
* Checked against the Intel manual and GCC --hpreg
*
* Need __volatile__ and "memory" since CPUID has a synchronizing effect.
* The CPUID may also change at runtime (APIC flag, etc).
*
*/
/*
* %ebx is reserved on i386 PIC. Apple's gcc-5493 (gcc 4.0) compiling
* for x86_64 incorrectly errors out saying %ebx is reserved. This is
* Apple bug 7304232.
*/
#if vm_x86_64 ? (defined __APPLE_CC__ && __APPLE_CC__ == 5493) : defined __PIC__
#if vm_x86_64
/*
* Note that this generates movq %rbx,%rbx; cpuid; xchgq %rbx,%rbx ...
* Unfortunately Apple's assembler does not have .ifnes, and I cannot
* figure out how to do that with .if. If we ever enable this code
* on other 64bit systems, both movq & xchgq should be surrounded by
* .ifnes \"%%rbx\", \"%q1\" & .endif
*/
#define VM_CPUID_BLOCK "movq %%rbx, %q1\n\t" \
"cpuid\n\t" \
"xchgq %%rbx, %q1\n\t"
#define VM_EBX_OUT(reg) "=&r"(reg)
#else
#define VM_CPUID_BLOCK "movl %%ebx, %1\n\t" \
"cpuid\n\t" \
"xchgl %%ebx, %1\n\t"
#define VM_EBX_OUT(reg) "=&rm"(reg)
#endif
#else
#define VM_CPUID_BLOCK "cpuid"
#define VM_EBX_OUT(reg) "=b"(reg)
#endif
static INLINE void
__GET_CPUID(int eax, // IN
CPUIDRegs *regs) // OUT
{
__asm__ __volatile__(
VM_CPUID_BLOCK
: "=a" (regs->eax), VM_EBX_OUT(regs->ebx), "=c" (regs->ecx), "=d" (regs->edx)
: "a" (eax)
: "memory"
);
}
static INLINE void
__GET_CPUID2(int eax, // IN
int ecx, // IN
CPUIDRegs *regs) // OUT
{
__asm__ __volatile__(
VM_CPUID_BLOCK
: "=a" (regs->eax), VM_EBX_OUT(regs->ebx), "=c" (regs->ecx), "=d" (regs->edx)
: "a" (eax), "c" (ecx)
: "memory"
);
}
static INLINE uint32
__GET_EAX_FROM_CPUID(int eax) // IN
{
uint32 ebx;
__asm__ __volatile__(
VM_CPUID_BLOCK
: "=a" (eax), VM_EBX_OUT(ebx)
: "a" (eax)
: "memory", "%ecx", "%edx"
);
return eax;
}
static INLINE uint32
__GET_EBX_FROM_CPUID(int eax) // IN
{
uint32 ebx;
__asm__ __volatile__(
VM_CPUID_BLOCK
: "=a" (eax), VM_EBX_OUT(ebx)
: "a" (eax)
: "memory", "%ecx", "%edx"
);
return ebx;
}
static INLINE uint32
__GET_ECX_FROM_CPUID(int eax) // IN
{
uint32 ecx;
uint32 ebx;
__asm__ __volatile__(
VM_CPUID_BLOCK
: "=a" (eax), VM_EBX_OUT(ebx), "=c" (ecx)
: "a" (eax)
: "memory", "%edx"
);
return ecx;
}
static INLINE uint32
__GET_EDX_FROM_CPUID(int eax) // IN
{
uint32 edx;
uint32 ebx;
__asm__ __volatile__(
VM_CPUID_BLOCK
: "=a" (eax), VM_EBX_OUT(ebx), "=d" (edx)
: "a" (eax)
: "memory", "%ecx"
);
return edx;
}
static INLINE uint32
__GET_EAX_FROM_CPUID4(int ecx) // IN
{
uint32 eax;
uint32 ebx;
__asm__ __volatile__(
VM_CPUID_BLOCK
: "=a" (eax), VM_EBX_OUT(ebx), "=c" (ecx)
: "a" (4), "c" (ecx)
: "memory", "%edx"
);
return eax;
}
#undef VM_CPUID_BLOCK
#undef VM_EBX_OUT
#elif defined(_MSC_VER) // } {
static INLINE void
__GET_CPUID(int input, CPUIDRegs *regs)
{
#ifdef VM_X86_64
__cpuid((int *)regs, input);
#else
__asm push esi
__asm push ebx
__asm push ecx
__asm push edx
__asm mov eax, input
__asm mov esi, regs
__asm _emit 0x0f __asm _emit 0xa2
__asm mov 0x0[esi], eax
__asm mov 0x4[esi], ebx
__asm mov 0x8[esi], ecx
__asm mov 0xC[esi], edx
__asm pop edx
__asm pop ecx
__asm pop ebx
__asm pop esi
#endif
}
#ifdef VM_X86_64
/*
* No inline assembly in Win64. Implemented in bora/lib/misc in
* cpuidMasm64.asm.
*/
extern void
__GET_CPUID2(int inputEax, int inputEcx, CPUIDRegs *regs);
#else // VM_X86_64
static INLINE void
__GET_CPUID2(int inputEax, int inputEcx, CPUIDRegs *regs)
{
__asm push esi
__asm push ebx
__asm push ecx
__asm push edx
__asm mov eax, inputEax
__asm mov ecx, inputEcx
__asm mov esi, regs
__asm _emit 0x0f __asm _emit 0xa2
__asm mov 0x0[esi], eax
__asm mov 0x4[esi], ebx
__asm mov 0x8[esi], ecx
__asm mov 0xC[esi], edx
__asm pop edx
__asm pop ecx
__asm pop ebx
__asm pop esi
}
#endif
static INLINE uint32
__GET_EAX_FROM_CPUID(int input)
{
#ifdef VM_X86_64
CPUIDRegs regs;
__cpuid((int *)&regs, input);
return regs.eax;
#else
uint32 output;
//NOT_TESTED();
__asm push ebx
__asm push ecx
__asm push edx
__asm mov eax, input
__asm _emit 0x0f __asm _emit 0xa2
__asm mov output, eax
__asm pop edx
__asm pop ecx
__asm pop ebx
return output;
#endif
}
static INLINE uint32
__GET_EBX_FROM_CPUID(int input)
{
#ifdef VM_X86_64
CPUIDRegs regs;
__cpuid((int *)&regs, input);
return regs.ebx;
#else
uint32 output;
//NOT_TESTED();
__asm push ebx
__asm push ecx
__asm push edx
__asm mov eax, input
__asm _emit 0x0f __asm _emit 0xa2
__asm mov output, ebx
__asm pop edx
__asm pop ecx
__asm pop ebx
return output;
#endif
}
static INLINE uint32
__GET_ECX_FROM_CPUID(int input)
{
#ifdef VM_X86_64
CPUIDRegs regs;
__cpuid((int *)&regs, input);
return regs.ecx;
#else
uint32 output;
//NOT_TESTED();
__asm push ebx
__asm push ecx
__asm push edx
__asm mov eax, input
__asm _emit 0x0f __asm _emit 0xa2
__asm mov output, ecx
__asm pop edx
__asm pop ecx
__asm pop ebx
return output;
#endif
}
static INLINE uint32
__GET_EDX_FROM_CPUID(int input)
{
#ifdef VM_X86_64
CPUIDRegs regs;
__cpuid((int *)&regs, input);
return regs.edx;
#else
uint32 output;
//NOT_TESTED();
__asm push ebx
__asm push ecx
__asm push edx
__asm mov eax, input
__asm _emit 0x0f __asm _emit 0xa2
__asm mov output, edx
__asm pop edx
__asm pop ecx
__asm pop ebx
return output;
#endif
}
#ifdef VM_X86_64
/*
* No inline assembly in Win64. Implemented in bora/lib/misc in
* cpuidMasm64.asm.
*/
extern uint32
__GET_EAX_FROM_CPUID4(int inputEcx);
#else // VM_X86_64
static INLINE uint32
__GET_EAX_FROM_CPUID4(int inputEcx)
{
uint32 output;
//NOT_TESTED();
__asm push ebx
__asm push ecx
__asm push edx
__asm mov eax, 4
__asm mov ecx, inputEcx
__asm _emit 0x0f __asm _emit 0xa2
__asm mov output, eax
__asm pop edx
__asm pop ecx
__asm pop ebx
return output;
}
#endif // VM_X86_64
#else // }
#error
#endif
#define CPUID_FOR_SIDE_EFFECTS() ((void)__GET_EAX_FROM_CPUID(0))
static INLINE void
__GET_CPUID4(int inputEcx, CPUIDRegs *regs)
{
__GET_CPUID2(4, inputEcx, regs);
}
/* The first parameter is used as an rvalue and then as an lvalue. */
#define GET_CPUID(_ax, _bx, _cx, _dx) { \
CPUIDRegs regs; \
__GET_CPUID(_ax, &regs); \
_ax = regs.eax; \
_bx = regs.ebx; \
_cx = regs.ecx; \
_dx = regs.edx; \
}
#endif
Reference in New Issue View Git Blame Copy Permalink