From 411c121bce89d50d8354114adc43fc4e91a2cc3d Mon Sep 17 00:00:00 2001 From: Ulrich Drepper Date: Sun, 12 Jan 2003 19:23:41 +0000 Subject: [PATCH] Move inline syscall bits to sysdeps/unix/alpha/sysdep.h. --- sysdeps/unix/sysv/linux/alpha/sysdep.h | 191 +-------------------------------- 1 file changed, 5 insertions(+), 186 deletions(-) diff --git a/sysdeps/unix/sysv/linux/alpha/sysdep.h b/sysdeps/unix/sysv/linux/alpha/sysdep.h index 53af4b7..6a07906 100644 --- a/sysdeps/unix/sysv/linux/alpha/sysdep.h +++ b/sysdeps/unix/sysv/linux/alpha/sysdep.h @@ -72,192 +72,11 @@ ? __syscall_##name(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; \ +#undef INTERNAL_SYSCALL +#define INTERNAL_SYSCALL(name, err_out, nr, args...) \ +({ \ + extern char ChEcK[__NR_##name == __NR_rt_sigaction ? -1 : 1]; \ + INTERNAL_SYSCALL1(name, err_out, nr, args); \ }) -#define inline_syscall_clobbers \ - "$1", "$2", "$3", "$4", "$5", "$6", "$7", "$8", \ - "$22", "$23", "$24", "$25", "$27", "$28", "memory" - -/* If TLS is in use, we have a conflict between the PAL_rduniq primitive, - as modeled within GCC, and explicit use of the R0 register. If we use - the register via the asm, the scheduler may place the PAL_rduniq insn - before we've copied the data from R0 into _sc_ret. If this happens - we'll get a reload abort, since R0 is live at the same time it is - needed for the PAL_rduniq. - - Solve this by using the "v" constraint instead of an asm for the syscall - output. We don't do this unconditionally to allow compilation with - older compilers. */ - -#ifdef USE_TLS -#define inline_syscall_r0_asm -#define inline_syscall_r0_out_constraint "=v" -#else -#define inline_syscall_r0_asm __asm__("$0") -#define inline_syscall_r0_out_constraint "=r" -#endif - -/* 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, args...) \ -{ \ - register long _sc_0 inline_syscall_r0_asm; \ - register long _sc_19 __asm__("$19"); \ - \ - _sc_0 = __NR_##name; \ - __asm__("callsys # %0 %1 <= %2" \ - : inline_syscall_r0_out_constraint (_sc_0), \ - "=r"(_sc_19) \ - : "0"(_sc_0) \ - : inline_syscall_clobbers, \ - "$16", "$17", "$18", "$20", "$21"); \ - _sc_ret = _sc_0, _sc_err = _sc_19; \ -} - -#define inline_syscall1(name,arg1) \ -{ \ - register long _sc_0 inline_syscall_r0_asm; \ - 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" \ - : inline_syscall_r0_out_constraint (_sc_0), \ - "=r"(_sc_19), "=r"(_sc_16) \ - : "0"(_sc_0), "2"(_sc_16) \ - : inline_syscall_clobbers, \ - "$17", "$18", "$20", "$21"); \ - _sc_ret = _sc_0, _sc_err = _sc_19; \ -} - -#define inline_syscall2(name,arg1,arg2) \ -{ \ - register long _sc_0 inline_syscall_r0_asm; \ - 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" \ - : inline_syscall_r0_out_constraint (_sc_0), \ - "=r"(_sc_19), "=r"(_sc_16), "=r"(_sc_17) \ - : "0"(_sc_0), "2"(_sc_16), "3"(_sc_17) \ - : inline_syscall_clobbers, \ - "$18", "$20", "$21"); \ - _sc_ret = _sc_0, _sc_err = _sc_19; \ -} - -#define inline_syscall3(name,arg1,arg2,arg3) \ -{ \ - register long _sc_0 inline_syscall_r0_asm; \ - 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" \ - : inline_syscall_r0_out_constraint (_sc_0), \ - "=r"(_sc_19), "=r"(_sc_16), "=r"(_sc_17), \ - "=r"(_sc_18) \ - : "0"(_sc_0), "2"(_sc_16), "3"(_sc_17), \ - "4"(_sc_18) \ - : inline_syscall_clobbers, "$20", "$21"); \ - _sc_ret = _sc_0, _sc_err = _sc_19; \ -} - -#define inline_syscall4(name,arg1,arg2,arg3,arg4) \ -{ \ - register long _sc_0 inline_syscall_r0_asm; \ - 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" \ - : inline_syscall_r0_out_constraint (_sc_0), \ - "=r"(_sc_19), "=r"(_sc_16), "=r"(_sc_17), \ - "=r"(_sc_18) \ - : "0"(_sc_0), "2"(_sc_16), "3"(_sc_17), \ - "4"(_sc_18), "1"(_sc_19) \ - : inline_syscall_clobbers, "$20", "$21"); \ - _sc_ret = _sc_0, _sc_err = _sc_19; \ -} - -#define inline_syscall5(name,arg1,arg2,arg3,arg4,arg5) \ -{ \ - register long _sc_0 inline_syscall_r0_asm; \ - 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" \ - : inline_syscall_r0_out_constraint (_sc_0), \ - "=r"(_sc_19), "=r"(_sc_16), "=r"(_sc_17), \ - "=r"(_sc_18), "=r"(_sc_20) \ - : "0"(_sc_0), "2"(_sc_16), "3"(_sc_17), \ - "4"(_sc_18), "1"(_sc_19), "5"(_sc_20) \ - : inline_syscall_clobbers, "$21"); \ - _sc_ret = _sc_0, _sc_err = _sc_19; \ -} - -#define inline_syscall6(name,arg1,arg2,arg3,arg4,arg5,arg6) \ -{ \ - register long _sc_0 inline_syscall_r0_asm; \ - 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" \ - : inline_syscall_r0_out_constraint (_sc_0), \ - "=r"(_sc_19) "=r"(_sc_16), "=r"(_sc_17), \ - "=r"(_sc_18), "=r"(_sc_20), "=r"(_sc_21) \ - : "0"(_sc_0), "2"(_sc_16), "3"(_sc_17), \ - "4"(_sc_18), "1"(_sc_19), "5"(_sc_20), \ - "6"(_sc_21) \ - : inline_syscall_clobbers); \ - _sc_ret = _sc_0, _sc_err = _sc_19; \ -} - #endif /* _LINUX_ALPHA_SYSDEP_H */ -- 2.7.4