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pub mod call; pub mod errno; pub mod sysno; pub use call::*; pub use errno::*; pub use sysno::*; const MAX_ERRNO: i32 = 4095; #[inline(always)] pub fn check_errno(ret: usize) -> Result<usize, Errno> { let reti = ret as isize; if reti < 0 && reti >= (-MAX_ERRNO) as isize { let reti = (-reti) as Errno; Err(reti) } else { Ok(ret) } } #[inline(always)] pub unsafe fn syscall0(n: Sysno) -> Result<usize, Errno> { let ret: usize; asm!("syscall" : "={rax}"(ret) : "{rax}"(n) : "rcx", "r11", "memory" : "volatile"); check_errno(ret) } #[inline(always)] pub unsafe fn syscall1(n: Sysno, a1: usize) -> Result<usize, Errno> { let ret: usize; asm!("syscall" : "={rax}"(ret) : "{rax}"(n), "{rdi}"(a1) : "rcx", "r11", "memory" : "volatile"); check_errno(ret) } #[inline(always)] pub unsafe fn syscall2(n: Sysno, a1: usize, a2: usize) -> Result<usize, Errno> { let ret: usize; asm!("syscall" : "={rax}"(ret) : "{rax}"(n), "{rdi}"(a1), "{rsi}"(a2) : "rcx", "r11", "memory" : "volatile"); check_errno(ret) } #[inline(always)] pub unsafe fn syscall3(n: Sysno, a1: usize, a2: usize, a3: usize) -> Result<usize, Errno> { let ret: usize; asm!("syscall" : "={rax}"(ret) : "{rax}"(n), "{rdi}"(a1), "{rsi}"(a2), "{rdx}"(a3) : "rcx", "r11", "memory" : "volatile"); check_errno(ret) } #[inline(always)] pub unsafe fn syscall4( n: Sysno, a1: usize, a2: usize, a3: usize, a4: usize, ) -> Result<usize, Errno> { let ret: usize; asm!("syscall" : "={rax}"(ret) : "{rax}"(n), "{rdi}"(a1), "{rsi}"(a2), "{rdx}"(a3), "{r10}"(a4) : "rcx", "r11", "memory" : "volatile"); check_errno(ret) } #[inline(always)] pub unsafe fn syscall5( n: Sysno, a1: usize, a2: usize, a3: usize, a4: usize, a5: usize, ) -> Result<usize, Errno> { let ret: usize; asm!("syscall" : "={rax}"(ret) : "{rax}"(n), "{rdi}"(a1), "{rsi}"(a2), "{rdx}"(a3), "{r10}"(a4), "{r8}"(a5) : "rcx", "r11", "memory" : "volatile"); check_errno(ret) } #[inline(always)] pub unsafe fn syscall6( n: Sysno, a1: usize, a2: usize, a3: usize, a4: usize, a5: usize, a6: usize, ) -> Result<usize, Errno> { let ret: usize; asm!("syscall" : "={rax}"(ret) : "{rax}"(n), "{rdi}"(a1), "{rsi}"(a2), "{rdx}"(a3), "{r10}"(a4), "{r8}"(a5), "{r9}"(a6) : "rcx", "r11", "memory" : "volatile"); check_errno(ret) }