diff options
Diffstat (limited to 'libc/sysdeps/unix/sysv/linux/sparc/sparc64/sysdep.h')
| -rw-r--r-- | libc/sysdeps/unix/sysv/linux/sparc/sparc64/sysdep.h | 175 |
1 files changed, 175 insertions, 0 deletions
diff --git a/libc/sysdeps/unix/sysv/linux/sparc/sparc64/sysdep.h b/libc/sysdeps/unix/sysv/linux/sparc/sparc64/sysdep.h new file mode 100644 index 000000000..f156f9241 --- /dev/null +++ b/libc/sysdeps/unix/sysv/linux/sparc/sparc64/sysdep.h @@ -0,0 +1,175 @@ +/* Copyright (C) 1997, 2000, 2002, 2003, 2004, 2006 + 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 Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 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 + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; 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> + +#ifdef IS_IN_rtld +# include <dl-sysdep.h> /* Defines RTLD_PRIVATE_ERRNO. */ +#endif +#include <tls.h> + +#undef SYS_ify +#define SYS_ify(syscall_name) __NR_##syscall_name + +/* This is a kludge to make syscalls.list find these under the names + pread and pwrite, since some kernel headers define those names + and some define the *64 names for the same system calls. */ +#if !defined __NR_pread && defined __NR_pread64 +# define __NR_pread __NR_pread64 +#endif +#if !defined __NR_pwrite && defined __NR_pwrite64 +# define __NR_pwrite __NR_pwrite64 +#endif + +#ifdef __ASSEMBLER__ + +#define LOADSYSCALL(x) mov __NR_##x, %g1 + +/* Linux/SPARC uses a different trap number */ +#undef PSEUDO +#undef PSEUDO_NOERRNO +#undef PSEUDO_ERRVAL +#undef PSEUDO_END +#undef ENTRY +#undef END + +#define ENTRY(name) \ + .align 4; \ + .global C_SYMBOL_NAME(name); \ + .type name, @function; \ +C_LABEL(name) \ + cfi_startproc; + +#define END(name) \ + cfi_endproc; \ + .size name, . - name + + /* If the offset to __syscall_error fits into a signed 22-bit + * immediate branch offset, the linker will relax the call into + * a normal branch. + */ +#define PSEUDO(name, syscall_name, args) \ + .text; \ + .globl __syscall_error; \ +ENTRY(name); \ + LOADSYSCALL(syscall_name); \ + ta 0x6d; \ + bcc,pt %xcc, 1f; \ + mov %o7, %g1; \ + call __syscall_error; \ + mov %g1, %o7; \ +1: + +#define PSEUDO_NOERRNO(name, syscall_name, args)\ + .text; \ +ENTRY(name); \ + LOADSYSCALL(syscall_name); \ + ta 0x6d; + +#define PSEUDO_ERRVAL(name, syscall_name, args) \ + .text; \ +ENTRY(name); \ + LOADSYSCALL(syscall_name); \ + ta 0x6d; + +#define PSEUDO_END(name) \ + END(name) + + +/* Careful here! This "ret" define can interfere; use jmpl if unsure. */ +#define ret retl; nop +#define ret_NOERRNO retl; nop +#define ret_ERRVAL retl; nop +#define r0 %o0 +#define r1 %o1 +#define MOVE(x,y) mov x, y + +#else /* __ASSEMBLER__ */ + +#define __SYSCALL_STRING \ + "ta 0x6d;" \ + "bcc,pt %%xcc, 1f;" \ + " nop;" \ + "save %%sp, -192, %%sp;" \ + "call __errno_location;" \ + " nop;" \ + "st %%i0,[%%o0];" \ + "restore %%g0, -1, %%o0;" \ + "1:" + +#define __CLONE_SYSCALL_STRING \ + "ta 0x6d;" \ + "bcc,pt %%xcc, 1f;" \ + " sub %%o1, 1, %%o1;" \ + "save %%sp, -192, %%sp;" \ + "call __errno_location;" \ + " mov -1, %%i1;" \ + "st %%i0,[%%o0];" \ + "restore %%g0, -1, %%o0;" \ + "1:" \ + "and %%o0, %%o1, %%o0" + +#define __INTERNAL_SYSCALL_STRING \ + "ta 0x6d;" \ + "bcs,a,pt %%xcc, 1f;" \ + " sub %%g0, %%o0, %%o0;" \ + "1:" + +#define __SYSCALL_CLOBBERS "g2", "g3", "g4", "g5", "g6", \ + "f0", "f1", "f2", "f3", "f4", "f5", "f6", "f7", \ + "f8", "f9", "f10", "f11", "f12", "f13", "f14", "f15", \ + "f16", "f17", "f18", "f19", "f20", "f21", "f22", "f23", \ + "f24", "f25", "f26", "f27", "f28", "f29", "f30", "f31", \ + "f32", "f34", "f36", "f38", "f40", "f42", "f44", "f46", \ + "f48", "f50", "f52", "f54", "f56", "f58", "f60", "f62", \ + "cc", "memory" + +#include <sysdeps/unix/sysv/linux/sparc/sysdep.h> + +#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 + +/* Pointer mangling support. */ +#if defined NOT_IN_libc && defined IS_IN_rtld +/* We cannot use the thread descriptor because in ld.so we use setjmp + earlier than the descriptor is initialized. */ +#else +# ifdef __ASSEMBLER__ +# define PTR_MANGLE(dreg, reg, tmpreg) \ + ldx [%g7 + POINTER_GUARD], tmpreg; \ + xor reg, tmpreg, dreg +# define PTR_DEMANGLE(dreg, reg, tmpreg) PTR_MANGLE (dreg, reg, tmpreg) +# define PTR_MANGLE2(dreg, reg, tmpreg) \ + xor reg, tmpreg, dreg +# define PTR_DEMANGLE2(dreg, reg, tmpreg) PTR_MANGLE2 (dreg, reg, tmpreg) +# else +# define PTR_MANGLE(var) \ + (var) = (__typeof (var)) ((uintptr_t) (var) ^ THREAD_GET_POINTER_GUARD ()) +# define PTR_DEMANGLE(var) PTR_MANGLE (var) +# endif +#endif + +#endif /* linux/sparc64/sysdep.h */ |