1 #------------------------------------------------------------------------------ 2 # 3 # Copyright (c) 2006 - 2008, Intel Corporation. All rights reserved.<BR> 4 # This program and the accompanying materials 5 # are licensed and made available under the terms and conditions of the BSD License 6 # which accompanies this distribution. The full text of the license may be found at 7 # http://opensource.org/licenses/bsd-license.php. 8 # 9 # THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, 10 # WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. 11 # 12 # Module Name: 13 # 14 # CpuId.S 15 # 16 # Abstract: 17 # 18 # AsmCpuid function 19 # 20 # Notes: 21 # 22 #------------------------------------------------------------------------------ 23 24 ASM_GLOBAL ASM_PFX(AsmCpuid) 25 26 #------------------------------------------------------------------------------ 27 # VOID 28 # EFIAPI 29 # AsmCpuid ( 30 # IN UINT32 RegisterInEax, 31 # OUT UINT32 *RegisterOutEax OPTIONAL, 32 # OUT UINT32 *RegisterOutEbx OPTIONAL, 33 # OUT UINT32 *RegisterOutEcx OPTIONAL, 34 # OUT UINT32 *RegisterOutEdx OPTIONAL 35 # ) 36 #------------------------------------------------------------------------------ 37 ASM_PFX(AsmCpuid): 38 push %ebx 39 push %ebp 40 movl %esp, %ebp 41 movl 12(%ebp), %eax 42 cpuid 43 push %ecx 44 movl 16(%ebp), %ecx 45 jecxz L1 46 movl %eax, (%ecx) 47 L1: 48 movl 20(%ebp), %ecx 49 jecxz L2 50 movl %ebx, (%ecx) 51 L2: 52 movl 24(%ebp), %ecx 53 jecxz L3 54 popl (%ecx) 55 L3: 56 movl 28(%ebp), %ecx 57 jecxz L4 58 movl %edx, (%ecx) 59 L4: 60 movl 12(%ebp), %eax 61 leave 62 pop %ebx 63 ret 64
