92 lines
1.5 KiB
ArmAsm
92 lines
1.5 KiB
ArmAsm
global _start
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; constants
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SYS_WRITE equ 1
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SYS_SOCKET equ 41
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SYS_CONNECT equ 42
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SYS_SHUTDOWN equ 48
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SYS_FCNTL equ 72
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SYS_EXIT equ 60
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AF_UNIX equ 1
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SOCK_STREAM equ 1
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F_GETFL equ 3
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F_SETFL equ 4
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O_NONBLOCK equ 2048
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SHUT_RDWR equ 2
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SECTION .data
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server_path db "eagain.sock", 0x00
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server_path_len equ $ - server_path
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sockaddr_size equ 2 + 108 ; $ man 7 unix
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SECTION .bss
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sockaddr resb sockaddr_size
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spam resb 0xffff
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SECTION .text
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_start:
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mov rax, SYS_SOCKET
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mov rdi, AF_UNIX
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mov rsi, SOCK_STREAM
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mov rdx, 0
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syscall
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mov r15, rax
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call nonblocking
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call make_sockaddr
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mov rax, SYS_CONNECT
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mov rdi, r15
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mov rsi, sockaddr
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mov rdx, sockaddr_size
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syscall
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loop:
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mov rax, SYS_WRITE
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mov rdi, r15
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mov rsi, spam
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mov rdx, 0xffff
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syscall
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cmp rax, 0
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jge loop
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mov rax, SYS_EXIT
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mov rdi, 1
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syscall
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nonblocking:
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mov r10, rax
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mov rax, SYS_FCNTL
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mov rdi, r10
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mov rsi, F_GETFL
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syscall
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mov r11, rax
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xor r11, O_NONBLOCK
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mov rax, SYS_FCNTL
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mov rdi, r10
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mov rsi, F_SETFL
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mov rdx, r11
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syscall
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ret
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make_sockaddr:
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mov word [sockaddr], AF_UNIX
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mov rax, 0
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make_sockaddr__copy_server_path:
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cmp rax, server_path_len
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jge return
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mov r10, [server_path + rax]
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mov [sockaddr + rax + 2], r10
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add rax, 8
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jmp make_sockaddr__copy_server_path
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return:
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ret
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