| /* SPDX-License-Identifier: GPL-2.0-only */ |
| |
| /* It is derived from the x86info project, which is GPLv2-licensed. */ |
| |
| /* calling syntax: docpuid(idx,eax,ebx,ecx,edx) */ |
| |
| .align 4 |
| .text |
| |
| .global docpuid |
| .type docpuid,@function |
| |
| docpuid: |
| pushl %ebp |
| movl %esp, %ebp |
| pushl %edi |
| pushl %ebx |
| pushl %ecx |
| pushl %edx |
| movl 8(%ebp),%eax |
| cpuid |
| movl 12(%ebp),%edi |
| test %edi,%edi |
| jz L1 |
| movl %eax, (%edi) |
| |
| L1: movl 16(%ebp),%edi |
| test %edi,%edi |
| jz L2 |
| movl %ebx,(%edi) |
| |
| L2: movl 20(%ebp),%edi |
| test %edi,%edi |
| jz L3 |
| movl %ecx,(%edi) |
| |
| L3: movl 24(%ebp), %edi |
| test %edi,%edi |
| jz L4 |
| movl %edx,(%edi) |
| |
| L4: popl %edx |
| popl %ecx |
| popl %ebx |
| popl %edi |
| movl %ebp,%esp |
| popl %ebp |
| ret |
| |
| .section .note.GNU-stack,"", @progbits |