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#REDIRECT [[IOS]]
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There are 2 types of syscalls:
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1. Syscalls using undefined ARM instruction.
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2. Syscalls using ARM syscall instruction.
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== Syscalls (via undefined instructions) ==
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Syscalls are invoked by way of the invalid instruction handler; syscalls take the form 0xE7F000F0 | (syscall_num << 8). (E.g. E7F000F0 is syscall 0, E7F036F0 is syscall 0x36, etc.). IOS has 0x82 available syscalls.
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(please feel free to contribute your own findings!)
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{|border=1
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|-
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! ID # !! Internal name !! Description !! Return value
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| 2D || int device_open(const char* device, int mode) || Similar to IOS_Open on PPC, except now internal to the IOS system || Returns an fd or error (negative)
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|}