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b056d95920
* syscalls should all return j6_status_t now * syscalls are grouped by category in name as well as in files
82 lines
914 B
ArmAsm
82 lines
914 B
ArmAsm
section .bss
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mymessage:
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resq 1024
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extern main
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extern exit
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section .text
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global getpid
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getpid:
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push rbp
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mov rbp, rsp
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; address of out var should already be in rdi
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mov rax, 0x13 ; getpid syscall
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syscall ; result is now already in rax, so just return
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pop rbp
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ret
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global debug
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debug:
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push rbp
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mov rbp, rsp
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mov rax, 0x00 ; debug syscall
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syscall
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pop rbp
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ret
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global sleep
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sleep:
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push rbp
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mov rbp, rsp
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mov rax, 0x16 ; sleep syscall
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syscall
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pop rbp
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ret
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global fork
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fork:
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push rbp
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mov rbp, rsp
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; address of out var should already be in rdi
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mov rax, 0x12
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syscall ; result left in rax
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pop rbp
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ret
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global message
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message:
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push rbp
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mov rbp, rsp
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; message should already be in rdi
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mov rax, 0x14
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syscall
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pop rbp
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ret
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global _start
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_start:
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xor rbp, rbp ; Sentinel rbp
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push rbp
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push rbp
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mov rbp, rsp
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mov rdi, 0
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mov rsi, 0
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call main
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mov rdi, rax
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call exit
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