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/* Copyright (C) 1997 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Richard Henderson <richard@gnu.ai.mit.edu>, 1997.
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. */
#ifndef _LINUX_SPARC64_SYSDEP_H
#define _LINUX_SPARC64_SYSDEP_H 1
#include <sysdeps/unix/sysdep.h>
#undef SYS_ify
#define SYS_ify(syscall_name) __NR_##syscall_name
#ifdef ASSEMBLER
#ifdef DONT_LOAD_G1
# define LOADSYSCALL(x)
#else
# define LOADSYSCALL(x) mov __NR_##x, %g1
#endif
/* Linux/SPARC uses a different trap number */
#undef PSEUDO
#undef ENTRY
#define ENTRY(name) \
.global C_SYMBOL_NAME(name); \
.align 2; \
C_LABEL(name); \
.type name,@function;
#ifdef PIC
# ifdef _LIBC_REENTRANT
# define SYSCALL_ERROR_HANDLER \
.global C_SYMBOL_NAME(errno); \
.type C_SYMBOL_NAME(errno),@object; \
save %sp,-160,%sp; \
101: call 102f; \
sethi %hi(_GLOBAL_OFFSET_TABLE_-(101b-.)),%g2; \
102: or %g2,%lo(_GLOBAL_OFFSET_TABLE_-(101b-.)),%g2; \
sethi %hi(errno),%i1; \
add %g2,%o7,%l7; \
or %i1,%lo(errno),%i1; \
ldx [%l7+%i1],%g2; \
st %i0,[%g2]; \
call __errno_location; \
nop; \
st %i0,[%o0]; \
sub %g0,1,%i0; \
jmpl %i7+8, %g0; \
restore
# else
# define SYSCALL_ERROR_HANDLER \
.global C_SYMBOL_NAME(errno); \
.type C_SYMBOL_NAME(errno),@object; \
mov %o7,%g3; \
101: call 102f; \
sethi %hi(_GLOBAL_OFFSET_TABLE_-(101b-.)),%g2; \
102: or %g2,%lo(_GLOBAL_OFFSET_TABLE_-(101b-.)),%g2; \
sethi %hi(errno),%o1; \
add %g2,%o7,%l7; \
or %o1,%lo(errno),%o1; \
mov %g3,%o7; \
ldx [%l7+%o1],%g2; \
st %o0,[%g2]
# endif
#else
# ifdef _LIBC_REENTRANT
# define SYSCALL_ERROR_HANDLER \
.global C_SYMBOL_NAME(errno); \
.type C_SYMBOL_NAME(errno),@object; \
save %sp,-160,%sp; \
sethi %hi(errno),%g1; \
or %g1,%lo(errno),%g1; \
st %i0,[%g1+%g4]; \
call __errno_location; \
nop; \
st %i0,[%o0]; \
sub %g0,1,%i0; \
jmpl %i7+8, %g0; \
restore
# else
# define SYSCALL_ERROR_HANDLER \
.global C_SYMBOL_NAME(errno); \
.type C_SYMBOL_NAME(errno),@object; \
sethi %hi(errno),%g1; \
or %g1,%lo(errno),%g1; \
st %i0,[%g1+%g4]; \
retl; \
sub %g0,1,%i0
# endif
#endif
#define PSEUDO(name, syscall_name, args) \
.text; \
ENTRY(name); \
LOADSYSCALL(syscall_name); \
ta 0x11; \
bcc,pt %xcc,1f; \
nop; \
SYSCALL_ERROR_HANDLER; \
1:
#undef PSEUDO_END
#define PSEUDO_END(name) \
.size name,.-name
#undef END
#define END(name) \
.size name,.-name
/* Careful here! This "ret" define can interfere; use jmpl if unsure. */
#define ret retl; nop
#define r0 %o0
#define r1 %o1
#define MOVE(x,y) mov x, y
#endif /* ASSEMBLER */
/* This is the offset from the %sp to the backing store above the
register windows. So if you poke stack memory directly you add this. */
#define STACK_BIAS 2047
#endif /* linux/sparc64/sysdep.h */
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