/home/ajh/work/vela_system/nuttx/include/arch/syscall.h:181: Error: operand type mismatch for `movq'
`rax`: Used in 64-bit mode, suitable for storing 64 bits of data.
`eax`: In 64-bit mode, typically used for operating on 32-bit data. When writing to `eax`, the high 32 bits of `rax` are automatically cleared to zero.
`nbr` is an unsigned int, is 32-bit.
Signed-off-by: anjiahao <anjiahao@xiaomi.com>
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