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/*
* ========================
* ===== ===============
* ====== ================
* ====== ================
* ====== ==== ==== ==
* ====== === == = =
* ====== === = == =
* = === === = == ====
* = === === = == = =
* == ===== ==== ==
* ========================
*
* 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_example.S
* Sun May 22 16:35:27 CEST 2022
* Joe
*/
.text
.globl main
main:
write_begin:
xorq %rdi, %rdi
xorq %rsi, %rsi
xorq %rdx, %rdx
xorq %rax, %rax
movb $0x1, %dil
movq $str_begin, %rsi
movq $len_begin, %rdx
movb $0x4, %al /* SYS_write */
syscall
fork_model:
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 %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 %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
jmp write_end
err:
xorq %rdi, %rdi
xorq %rax, %rax
movb $0x1, %dil
movb $0x1, %al
syscall
write_end:
xorq %rdi, %rdi
xorq %rsi, %rsi
xorq %rax, %rax
movb $0x1, %dil
movq $str_end, %rsi
movq $len_end, %rdx
movb $0x4, %al /* SYS_write */
syscall
end:
xorq %rax, %rax
retq
.data
str_begin: .ascii "Content-type: text/html\n\n<html>\n\t<head>\n\t\t<title>Title</title>\n\t</head>\n\t<body>\n\t\t<h1>hey</h1>\n\t\t<p>\n\t\t\tSome CPU infos:\n\t\t</p>\n\t\t<pre>\n\t\t\tsysctl hw.model\n\t\t\tsysctl hw.ncpu\n\t\t\tlscpu\n\t\t</pre>\n\t\t<p>\n\t\t\tGives us:\n\t\t</p>\n\t\t<pre>\n\t\t\t"
len_begin = . - str_begin
str_end: .ascii "\t\t</pre>\n\t</body>\n</html>\n"
len_end = . - str_end
sysctl: .asciz "/sbin/sysctl"
lscpu: .asciz "/usr/local/bin/lscpu"
model: .asciz "hw.model"
ncpu: .asciz "hw.ncpu"
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