vendor/redox_syscall/src/arch/aarch64.rs

   1 use super::error::{Error, Result};
   2
   3 pub unsafe fn syscall0(mut a: usize) -> Result<usize> {
   4     llvm_asm!("svc   0"
   5           : "={x0}"(a)
   6           : "{x8}"(a)
   7           : "x0", "x8"
   8           : "volatile");
   9
  10     Error::demux(a)
  11 }
  12
  13 pub unsafe fn syscall1(mut a: usize, b: usize) -> Result<usize> {
  14     llvm_asm!("svc   0"
  15           : "={x0}"(a)
  16           : "{x8}"(a), "{x0}"(b)
  17           : "x0", "x8"
  18           : "volatile");
  19
  20     Error::demux(a)
  21 }
  22
  23 // Clobbers all registers - special for clone
  24 pub unsafe fn syscall1_clobber(mut a: usize, b: usize) -> Result<usize> {
  25     llvm_asm!("svc   0"
  26           : "={x0}"(a)
  27           : "{x8}"(a), "{x0}"(b)
  28           : "memory",
  29             "x0", "x1",  "x2",  "x3",  "x4",  "x5", "x6", "x7",
  30             "x8",  "x9", "x10", "x11", "x12", "x13", "x14", "x15",
  31             "x16", "x17","x18", "x19", "x20", "x21", "x22", "x23",
  32             "x24", "x25", "x26", "x27", "x28", "x29", "x30"
  33           : "volatile");
  34
  35     Error::demux(a)
  36 }
  37
  38 pub unsafe fn syscall2(mut a: usize, b: usize, c: usize) -> Result<usize> {
  39     llvm_asm!("svc   0"
  40           : "={x0}"(a)
  41           : "{x8}"(a), "{x0}"(b), "{x1}"(c)
  42           : "x0", "x1", "x8"
  43           : "volatile");
  44
  45     Error::demux(a)
  46 }
  47
  48 pub unsafe fn syscall3(mut a: usize, b: usize, c: usize, d: usize) -> Result<usize> {
  49     llvm_asm!("svc   0"
  50           : "={x0}"(a)
  51           : "{x8}"(a), "{x0}"(b), "{x1}"(c), "{x2}"(d)
  52           : "x0", "x1", "x2", "x8"
  53           : "volatile");
  54
  55     Error::demux(a)
  56 }
  57
  58 pub unsafe fn syscall4(mut a: usize, b: usize, c: usize, d: usize, e: usize) -> Result<usize> {
  59     llvm_asm!("svc   0"
  60           : "={x0}"(a)
  61           : "{x8}"(a), "{x0}"(b), "{x1}"(c), "{x2}"(d), "{x3}"(e)
  62           : "x0", "x1", "x2", "x3", "x8"
  63           : "volatile");
  64
  65     Error::demux(a)
  66 }
  67
  68 pub unsafe fn syscall5(mut a: usize, b: usize, c: usize, d: usize, e: usize, f: usize)
  69     -> Result<usize> {
  70     llvm_asm!("svc   0"
  71           : "={x0}"(a)
  72           : "{x8}"(a), "{x0}"(b), "{x1}"(c), "{x2}"(d), "{x3}"(e), "{x4}"(f)
  73           : "x0", "x1", "x2", "x3", "x4", "x8"
  74           : "volatile");
  75
  76     Error::demux(a)
  77 }