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/* Copyright (C) 1992, 1995, 1996, 2000 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Brendan Kehoe (brendan@zen.org).
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public License as
published by the Free Software Foundation; either version 2 of the
License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with the GNU C Library; see the file COPYING.LIB. If not,
write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
#include <sysdeps/unix/sysdep.h>
#ifdef __ASSEMBLER__
#ifdef __linux__
# include <alpha/regdef.h>
#else
# include <regdef.h>
#endif
#ifdef __STDC__
#define __LABEL(x) x##:
#else
#define __LABEL(x) x/**/:
#endif
#define LEAF(name, framesize) \
.globl name; \
.align 3; \
.ent name, 0; \
__LABEL(name) \
.frame sp, framesize, ra
#define ENTRY(name) \
.globl name; \
.align 3; \
.ent name, 0; \
__LABEL(name) \
.frame sp, 0, ra
/* Mark the end of function SYM. */
#undef END
#define END(sym) .end sym
/* Note that PSEUDO/PSEUDO_END use label number 1996---do not use a
label of that number between those two macros! */
#ifdef PROF
#define PSEUDO(name, syscall_name, args) \
.globl name; \
.align 3; \
.ent name,0; \
__LABEL(name) \
.frame sp, 0, ra; \
ldgp gp,0(pv); \
.set noat; \
lda AT,_mcount; \
jsr AT,(AT),_mcount; \
.set at; \
.prologue 1; \
ldiq v0, SYS_ify(syscall_name); \
.set noat; \
call_pal PAL_callsys; \
.set at; \
bne a3, 1996f; \
3:
#else
#define PSEUDO(name, syscall_name, args) \
.globl name; \
.align 3; \
.ent name,0; \
__LABEL(name) \
.frame sp, 0, ra \
.prologue 0; \
ldiq v0, SYS_ify(syscall_name); \
.set noat; \
call_pal PAL_callsys; \
.set at; \
bne a3, 1996f; \
3:
#endif
#undef PSEUDO_END
#ifdef PROF
#define PSEUDO_END(sym) \
1996: \
jmp zero, __syscall_error; \
END(sym)
#else
#define PSEUDO_END(sym) \
1996: \
br gp, 2f; \
2: ldgp gp, 0(gp); \
jmp zero, __syscall_error; \
END(sym)
#endif
#define r0 v0
#define r1 a4
#define MOVE(x,y) mov x,y
#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", "memory"
/* 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 */
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