diff options
Diffstat (limited to 'sysdeps/unix/alpha/sysdep.h')
| -rw-r--r-- | sysdeps/unix/alpha/sysdep.h | 165 |
1 files changed, 164 insertions, 1 deletions
diff --git a/sysdeps/unix/alpha/sysdep.h b/sysdeps/unix/alpha/sysdep.h index f43c7f8edf..80cb3e2486 100644 --- a/sysdeps/unix/alpha/sysdep.h +++ b/sysdeps/unix/alpha/sysdep.h @@ -109,4 +109,167 @@ __LABEL(name) \ #define MOVE(x,y) mov x,y -#endif +#else /* !ASSEMBLER */ + +/* Define a macro which expands inline into the wrapper code for a + system call. */ + +#undef INLINE_SYSCALL +#define INLINE_SYSCALL(name, nr, args...) INLINE_SYSCALL1(name, nr, args) + +#define INLINE_SYSCALL1(name, nr, args...) \ +({ \ + long _sc_ret, _sc_err; \ + inline_syscall##nr(name, args); \ + if (_sc_err) \ + { \ + __set_errno (_sc_ret); \ + _sc_ret = -1L; \ + } \ + _sc_ret; \ +}) + +#define inline_syscall_clobbers \ + "$1", "$2", "$3", "$4", "$5", "$6", "$7", "$8", \ + "$22", "$23", "$24", "$25", "$27", "$28" + +/* It is moderately important optimization-wise to limit the lifetime + of the hard-register variables as much as possible. Thus we copy + in/out as close to the asm as possible. */ + +#define inline_syscall0(name) \ +{ \ + register long _sc_0 __asm__("$0"); \ + register long _sc_19 __asm__("$19"); \ + \ + _sc_0 = __NR_##name; \ + __asm__("callsys # %0 %1 <= %2" \ + : "=r"(_sc_0), "=r"(_sc_19) \ + : "0"(_sc_0) \ + : inline_syscall_clobbers); \ + _sc_ret = _sc_0, _sc_err = _sc_19; \ +} + +#define inline_syscall1(name,arg1) \ +{ \ + register long _sc_0 __asm__("$0"); \ + register long _sc_16 __asm__("$16"); \ + register long _sc_19 __asm__("$19"); \ + \ + _sc_0 = __NR_##name; \ + _sc_16 = (long) (arg1); \ + __asm__("callsys # %0 %1 <= %2 %3" \ + : "=r"(_sc_0), "=r"(_sc_19) \ + : "0"(_sc_0), "r"(_sc_16) \ + : inline_syscall_clobbers); \ + _sc_ret = _sc_0, _sc_err = _sc_19; \ +} + +#define inline_syscall2(name,arg1,arg2) \ +{ \ + register long _sc_0 __asm__("$0"); \ + register long _sc_16 __asm__("$16"); \ + register long _sc_17 __asm__("$17"); \ + register long _sc_19 __asm__("$19"); \ + \ + _sc_0 = __NR_##name; \ + _sc_16 = (long) (arg1); \ + _sc_17 = (long) (arg2); \ + __asm__("callsys # %0 %1 <= %2 %3 %4" \ + : "=r"(_sc_0), "=r"(_sc_19) \ + : "0"(_sc_0), "r"(_sc_16), "r"(_sc_17) \ + : inline_syscall_clobbers); \ + _sc_ret = _sc_0, _sc_err = _sc_19; \ +} + +#define inline_syscall3(name,arg1,arg2,arg3) \ +{ \ + register long _sc_0 __asm__("$0"); \ + register long _sc_16 __asm__("$16"); \ + register long _sc_17 __asm__("$17"); \ + register long _sc_18 __asm__("$18"); \ + register long _sc_19 __asm__("$19"); \ + \ + _sc_0 = __NR_##name; \ + _sc_16 = (long) (arg1); \ + _sc_17 = (long) (arg2); \ + _sc_18 = (long) (arg3); \ + __asm__("callsys # %0 %1 <= %2 %3 %4 %5" \ + : "=r"(_sc_0), "=r"(_sc_19) \ + : "0"(_sc_0), "r"(_sc_16), "r"(_sc_17), \ + "r"(_sc_18) \ + : inline_syscall_clobbers); \ + _sc_ret = _sc_0, _sc_err = _sc_19; \ +} + +#define inline_syscall4(name,arg1,arg2,arg3,arg4) \ +{ \ + register long _sc_0 __asm__("$0"); \ + register long _sc_16 __asm__("$16"); \ + register long _sc_17 __asm__("$17"); \ + register long _sc_18 __asm__("$18"); \ + register long _sc_19 __asm__("$19"); \ + \ + _sc_0 = __NR_##name; \ + _sc_16 = (long) (arg1); \ + _sc_17 = (long) (arg2); \ + _sc_18 = (long) (arg3); \ + _sc_19 = (long) (arg4); \ + __asm__("callsys # %0 %1 <= %2 %3 %4 %5 %6" \ + : "=r"(_sc_0), "=r"(_sc_19) \ + : "0"(_sc_0), "r"(_sc_16), "r"(_sc_17), \ + "r"(_sc_18), "1"(_sc_19) \ + : inline_syscall_clobbers); \ + _sc_ret = _sc_0, _sc_err = _sc_19; \ +} + +#define inline_syscall5(name,arg1,arg2,arg3,arg4,arg5) \ +{ \ + register long _sc_0 __asm__("$0"); \ + register long _sc_16 __asm__("$16"); \ + register long _sc_17 __asm__("$17"); \ + register long _sc_18 __asm__("$18"); \ + register long _sc_19 __asm__("$19"); \ + register long _sc_20 __asm__("$20"); \ + \ + _sc_0 = __NR_##name; \ + _sc_16 = (long) (arg1); \ + _sc_17 = (long) (arg2); \ + _sc_18 = (long) (arg3); \ + _sc_19 = (long) (arg4); \ + _sc_20 = (long) (arg5); \ + __asm__("callsys # %0 %1 <= %2 %3 %4 %5 %6 %7" \ + : "=r"(_sc_0), "=r"(_sc_19) \ + : "0"(_sc_0), "r"(_sc_16), "r"(_sc_17), \ + "r"(_sc_18), "1"(_sc_19), "r"(_sc_20) \ + : inline_syscall_clobbers); \ + _sc_ret = _sc_0, _sc_err = _sc_19; \ +} + +#define inline_syscall6(name,arg1,arg2,arg3,arg4,arg5,arg6) \ +{ \ + register long _sc_0 __asm__("$0"); \ + register long _sc_16 __asm__("$16"); \ + register long _sc_17 __asm__("$17"); \ + register long _sc_18 __asm__("$18"); \ + register long _sc_19 __asm__("$19"); \ + register long _sc_20 __asm__("$20"); \ + register long _sc_21 __asm__("$21"); \ + \ + _sc_0 = __NR_##name; \ + _sc_16 = (long) (arg1); \ + _sc_17 = (long) (arg2); \ + _sc_18 = (long) (arg3); \ + _sc_19 = (long) (arg4); \ + _sc_20 = (long) (arg5); \ + _sc_21 = (long) (arg6); \ + __asm__("callsys # %0 %1 <= %2 %3 %4 %5 %6 %7 %8" \ + : "=r"(_sc_0), "=r"(_sc_19) \ + : "0"(_sc_0), "r"(_sc_16), "r"(_sc_17), \ + "r"(_sc_18), "1"(_sc_19), "r"(_sc_20), \ + "r"(_sc_21) \ + : inline_syscall_clobbers); \ + _sc_ret = _sc_0, _sc_err = _sc_19; \ +} + +#endif /* ASSEMBLER */ |