diff options
Diffstat (limited to 'sysdeps/unix/sysv/linux/sparc64/sysdep.h')
| -rw-r--r-- | sysdeps/unix/sysv/linux/sparc64/sysdep.h | 116 |
1 files changed, 116 insertions, 0 deletions
diff --git a/sysdeps/unix/sysv/linux/sparc64/sysdep.h b/sysdeps/unix/sysv/linux/sparc64/sysdep.h new file mode 100644 index 0000000000..f01c1f43cd --- /dev/null +++ b/sysdeps/unix/sysv/linux/sparc64/sysdep.h @@ -0,0 +1,116 @@ +/* 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 +#define SYSCALL_ERROR_HANDLER1(R) \ + .global C_SYMBOL_NAME(errno); \ + .type C_SYMBOL_NAME(errno),@object; \ +0: rd %pc,%g1; \ + sethi %hi(_GLOBAL_OFFSET_TABLE_-(0b-.)),%g2; \ + add %g2,%lo(_GLOBAL_OFFSET_TABLE_-(0b-.)),%g2; \ + add %g2,%g1,%g1; \ + sethi %hi(errno),%g2; \ + add %g2,%lo(errno),%g2; \ + ldx [%g1+%g2],%g2; \ + st R,[%g2] +#else +#define SYSCALL_ERROR_HANDLER1(R) \ + .global C_SYMBOL_NAME(errno); \ + .type C_SYMBOL_NAME(errno),@object; \ + sethi %hi(errno),%g1; \ + add %g1,%g4,%g1; \ + st R,[%g1+%lo(errno)] +#endif + +#ifdef _LIBC_REENTRANT +#define SYSCALL_ERROR_HANDLER \ + .global C_SYMBOL_NAME(__errno_location); \ + .type C_SYMBOL_NAME(__errno_location),@function; \ + save %sp,-128,%sp; \ + SYSCALL_ERROR_HANDLER1(%i0); \ + call __errno_location; \ + nop; \ + st %i0,[%o0]; \ + sub %g0,1,%i0; \ + jmpl %i7+8, %g0; \ + restore +#else +#define SYSCALL_ERROR_HANDLER \ + SYSCALL_ERROR_HANDLER1(%o0); \ + retl; \ + sub %g0,1,%i0 +#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 */ |