/* * ======================== * ===== =============== * ====== ================ * ====== ================ * ====== ==== ==== == * ====== === == = = * ====== === = == = * = === === = == ==== * = === === = == = = * == ===== ==== == * ======================== * * SPDX-License-Identifier: BSD-3-Clause * * Copyright (c) 2022 Joe * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. Neither the name of the organization nor the * names of its contributors may be used to endorse or promote products * derived from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY JOE ''AS IS'' AND ANY * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE * DISCLAIMED. IN NO EVENT SHALL JOE BE LIABLE FOR ANY * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. * * asm-cgi-example: src/c_cpu.S * Sun May 22 16:51:35 CEST 2022 * Joe */ .text .globl c_cpu c_cpu: fork_model: xorq %rdi, %rdi xorq %rsi, %rsi xorq %rdx, %rdx xorq %rax, %rax movb $0x1, %dil movq $str_model, %rsi movq $len_model, %rdx movb $0x4, %al /* SYS_write */ syscall xorq %rdi, %rdi xorq %rsi, %rsi xorq %rax, %rax movb $0x2, %al /* SYS_fork */ syscall cmp $0x0, %rax jl err je exec_model jg wait_model fork_ncpu: xorq %rdi, %rdi xorq %rsi, %rsi xorq %rdx, %rdx xorq %rax, %rax movb $0x1, %dil movq $str_ncpu, %rsi movq $len_ncpu, %rdx movb $0x4, %al /* SYS_write */ syscall xorq %rdi, %rdi xorq %rsi, %rsi xorq %rax, %rax movb $0x2, %al /* SYS_fork */ syscall cmp $0x0, %rax jl err je exec_ncpu jg wait_ncpu fork_lscpu: xorq %rdi, %rdi xorq %rsi, %rsi xorq %rdx, %rdx xorq %rax, %rax movb $0x1, %dil movq $str_lscpu, %rsi movq $len_lscpu, %rdx movb $0x4, %al /* SYS_write */ syscall xorq %rdi, %rdi xorq %rsi, %rsi xorq %rax, %rax movb $0x2, %al /* SYS_fork */ syscall cmp $0x0, %rax jl err je exec_lscpu jg wait_lscpu exec_model: xorq %rax, %rax pushq %rbp movq %rsp, %rbp movq $sysctl, -32(%rbp) movq $model, -24(%rbp) movq $0x0, -16(%rbp) movq -32(%rbp), %rdi leaq -32(%rbp), %rsi xorq %rdx, %rdx movq $0x3b, %rax /* SYS_execve */ syscall popq %rbp retq exec_ncpu: xorq %rdi, %rdi xorq %rsi, %rsi xorq %rax, %rax pushq %rbp movq %rsp, %rbp movq $sysctl, -32(%rbp) movq $ncpu, -24(%rbp) movq $0x0, -16(%rbp) movq -32(%rbp), %rdi leaq -32(%rbp), %rsi xorq %rdx, %rdx movq $0x3b, %rax /* SYS_execve */ syscall popq %rbp exec_lscpu: xorq %rdi, %rdi xorq %rsi, %rsi xorq %rax, %rax pushq %rbp movq %rsp, %rbp movq $lscpu, -24(%rbp) movq $0x0, -16(%rbp) movq -24(%rbp), %rdi leaq -24(%rbp), %rsi xorq %rdx, %rdx movq $0x3b, %rax /* SYS_execve */ syscall popq %rbp wait_model: movq %rax, %rdi xorq %rsi, %rsi xorq %rdx, %rdx xorq %rcx, %rcx xorq %rax, %rax movb $0x7, %al /* sys_wait4 */ syscall jmp fork_ncpu wait_ncpu: movq %rax, %rdi xorq %rsi, %rsi xorq %rdx, %rdx xorq %rcx, %rcx xorq %rax, %rax movb $0x7, %al /* sys_wait4 */ syscall jmp fork_lscpu wait_lscpu: movq %rax, %rdi xorq %rsi, %rsi xorq %rdx, %rdx xorq %rcx, %rcx xorq %rax, %rax movb $0x7, %al /* sys_wait4 */ syscall write_end: xorq %rdi, %rdi xorq %rsi, %rsi xorq %rdx, %rdx xorq %rax, %rax movb $0x1, %dil movq $str_end, %rsi movq $len_end, %rdx movb $0x4, %al /* SYS_write */ syscall retq err: xorq %rdi, %rdi xorq %rax, %rax movb $0x1, %dil movb $0x1, %al syscall .data str_model: .asciz "\t\t

\n\t\t\tsysctl hw.model:\n\t\t

\n\t\t
\n"
	len_model	= . - str_model
	str_ncpu:	.asciz "\t\t
\n\t\t

\n\t\t\tsysctl hw.ncpu:\n\t\t

\n\t\t
\n"
	len_ncpu	= . - str_ncpu
	str_lscpu:	.asciz "\t\t
\n\t\t

\n\t\t\tlscpu:\n\t\t

\n\t\t
\n"
	len_lscpu	= . - str_lscpu
	str_end:	.asciz "\t\t
\n" len_end = . - str_end sysctl: .asciz "/sbin/sysctl" lscpu: .asciz "/usr/local/bin/lscpu" model: .asciz "hw.model" ncpu: .asciz "hw.ncpu"