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syscall4

riscv32.syscall4

pub fn syscall4(
    number: SYS,
    arg1: syscall_arg_t,
    arg2: syscall_arg_t,
    arg3: syscall_arg_t,
    arg4: syscall_arg_t,
) u32

File

lib/std/os/linux/riscv32.zig:55

Code

pub fn syscall4(
    number: SYS,
    arg1: syscall_arg_t,
    arg2: syscall_arg_t,
    arg3: syscall_arg_t,
    arg4: syscall_arg_t,
) u32 {
    return asm volatile ("ecall"
        : [ret] "={x10}" (-> u32),
        : [number] "{x17}" (@backingInt(number)),
          [arg1] "{x10}" (arg1),
          [arg2] "{x11}" (arg2),
          [arg3] "{x12}" (arg3),
          [arg4] "{x13}" (arg4),
        : .{ .memory = true });
}