| #------------------------------------------------------------------------------ | |
| # | |
| # Copyright (c) 2006 - 2008, Intel Corporation. All rights reserved.<BR> | |
| # This program and the accompanying materials | |
| # are licensed and made available under the terms and conditions of the BSD License | |
| # which accompanies this distribution. The full text of the license may be found at | |
| # http://opensource.org/licenses/bsd-license.php. | |
| # | |
| # THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, | |
| # WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. | |
| # | |
| # Module Name: | |
| # | |
| # CpuIdEx.S | |
| # | |
| # Abstract: | |
| # | |
| # AsmCpuidEx function | |
| # | |
| # Notes: | |
| # | |
| #------------------------------------------------------------------------------ | |
| #------------------------------------------------------------------------------ | |
| # UINT32 | |
| # EFIAPI | |
| # AsmCpuidEx ( | |
| # IN UINT32 RegisterInEax, | |
| # IN UINT32 RegisterInEcx, | |
| # OUT UINT32 *RegisterOutEax OPTIONAL, | |
| # OUT UINT32 *RegisterOutEbx OPTIONAL, | |
| # OUT UINT32 *RegisterOutEcx OPTIONAL, | |
| # OUT UINT32 *RegisterOutEdx OPTIONAL | |
| # ) | |
| #------------------------------------------------------------------------------ | |
| ASM_GLOBAL ASM_PFX(AsmCpuidEx) | |
| ASM_PFX(AsmCpuidEx): | |
| push %rbx | |
| movl %ecx,%eax | |
| movl %edx,%ecx | |
| push %rax # save Index on stack | |
| cpuid | |
| mov 0x38(%rsp), %r10 | |
| test %r10, %r10 | |
| jz L1 | |
| mov %ecx,(%r10) | |
| L1: | |
| mov %r8, %rcx | |
| jrcxz L2 | |
| movl %eax,(%rcx) | |
| L2: | |
| mov %r9, %rcx | |
| jrcxz L3 | |
| mov %ebx, (%rcx) | |
| L3: | |
| mov 0x40(%rsp), %rcx | |
| jrcxz L4 | |
| mov %edx, (%rcx) | |
| L4: | |
| pop %rax # restore Index to rax as return value | |
| pop %rbx | |
| ret |