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117 lines
3.2 KiB
C
117 lines
3.2 KiB
C
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/* Copyright (C) 1997 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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Contributed by Richard Henderson <richard@gnu.ai.mit.edu>, 1997.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public License as
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published by the Free Software Foundation; either version 2 of the
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License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with the GNU C Library; see the file COPYING.LIB. If not,
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write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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#ifndef _LINUX_SPARC64_SYSDEP_H
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#define _LINUX_SPARC64_SYSDEP_H 1
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#include <sysdeps/unix/sysdep.h>
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#undef SYS_ify
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#define SYS_ify(syscall_name) __NR_##syscall_name
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#ifdef ASSEMBLER
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#ifdef DONT_LOAD_G1
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# define LOADSYSCALL(x)
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#else
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# define LOADSYSCALL(x) mov __NR_##x, %g1
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#endif
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/* Linux/SPARC uses a different trap number */
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#undef PSEUDO
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#undef ENTRY
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#define ENTRY(name) \
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.global C_SYMBOL_NAME(name); \
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.align 2; \
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C_LABEL(name); \
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.type name,@function;
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#ifdef PIC
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#define SYSCALL_ERROR_HANDLER1(R) \
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.global C_SYMBOL_NAME(errno); \
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.type C_SYMBOL_NAME(errno),@object; \
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0: rd %pc,%g1; \
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sethi %hi(_GLOBAL_OFFSET_TABLE_-(0b-.)),%g2; \
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add %g2,%lo(_GLOBAL_OFFSET_TABLE_-(0b-.)),%g2; \
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add %g2,%g1,%g1; \
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sethi %hi(errno),%g2; \
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add %g2,%lo(errno),%g2; \
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ldx [%g1+%g2],%g2; \
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st R,[%g2]
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#else
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#define SYSCALL_ERROR_HANDLER1(R) \
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.global C_SYMBOL_NAME(errno); \
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.type C_SYMBOL_NAME(errno),@object; \
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sethi %hi(errno),%g1; \
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add %g1,%g4,%g1; \
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st R,[%g1+%lo(errno)]
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#endif
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#ifdef _LIBC_REENTRANT
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#define SYSCALL_ERROR_HANDLER \
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.global C_SYMBOL_NAME(__errno_location); \
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.type C_SYMBOL_NAME(__errno_location),@function; \
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save %sp,-128,%sp; \
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SYSCALL_ERROR_HANDLER1(%i0); \
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call __errno_location; \
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nop; \
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st %i0,[%o0]; \
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sub %g0,1,%i0; \
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jmpl %i7+8, %g0; \
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restore
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#else
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#define SYSCALL_ERROR_HANDLER \
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SYSCALL_ERROR_HANDLER1(%o0); \
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retl; \
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sub %g0,1,%i0
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#endif
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#define PSEUDO(name, syscall_name, args) \
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.text; \
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ENTRY(name); \
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LOADSYSCALL(syscall_name); \
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ta 0x11; \
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bcc,pt %xcc,1f; \
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nop; \
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SYSCALL_ERROR_HANDLER; \
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1:
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#undef PSEUDO_END
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#define PSEUDO_END(name) \
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.size name,.-name
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#undef END
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#define END(name) \
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.size name,.-name
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/* Careful here! This "ret" define can interfere; use jmpl if unsure. */
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#define ret retl; nop
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#define r0 %o0
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#define r1 %o1
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#define MOVE(x,y) mov x, y
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#endif /* ASSEMBLER */
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/* This is the offset from the %sp to the backing store above the
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register windows. So if you poke stack memory directly you add this. */
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#define STACK_BIAS 2047
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#endif /* linux/sparc64/sysdep.h */
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