diff options
Diffstat (limited to 'payloads/coreinfo/cpuid.S')
| -rw-r--r-- | payloads/coreinfo/cpuid.S | 67 |
1 files changed, 67 insertions, 0 deletions
diff --git a/payloads/coreinfo/cpuid.S b/payloads/coreinfo/cpuid.S new file mode 100644 index 0000000000..9b1d13448f --- /dev/null +++ b/payloads/coreinfo/cpuid.S @@ -0,0 +1,67 @@ +/* + * This file is part of the coreinfo project. + * + * It is derived from the x86info project, which is GPLv2-licensed. + * + * Copyright (C) 2001-2007 Dave Jones <davej@codemonkey.org.uk> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * 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 + * GNU General Public License for more details. + * + * You should have received a copy of the GNU 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 + */ + +/* 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 |