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/* Copyright (C) 1997-2018 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, see
<http://www.gnu.org/licenses/>. */
#ifndef _LINUX_SPARC64_SYSDEP_H
#define _LINUX_SPARC64_SYSDEP_H 1
#include <sysdeps/unix/sysv/linux/sparc/sysdep.h>
#if 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
#undef PSEUDO
#define PSEUDO(name, syscall_name, args) \
.text; \
ENTRY(name); \
LOADSYSCALL(syscall_name); \
ta 0x6d; \
bcc,pt %xcc, 1f; \
nop; \
SYSCALL_ERROR_HANDLER \
1:
#undef PSEUDO_NOERRNO
#define PSEUDO_NOERRNO(name, syscall_name, args)\
.text; \
ENTRY(name); \
LOADSYSCALL(syscall_name); \
ta 0x6d;
#undef PSEUDO_ERRVAL
#define PSEUDO_ERRVAL(name, syscall_name, args) \
.text; \
ENTRY(name); \
LOADSYSCALL(syscall_name); \
ta 0x6d;
#undef PSEUDO_END
#define PSEUDO_END(name) \
END(name)
#ifndef PIC
# define SYSCALL_ERROR_HANDLER \
mov %o7, %g1; \
call __syscall_error; \
mov %g1, %o7;
#else
# if RTLD_PRIVATE_ERRNO
# define SYSCALL_ERROR_HANDLER \
0: SETUP_PIC_REG_LEAF(o2,g1) \
sethi %gdop_hix22(rtld_errno), %g1; \
xor %g1, %gdop_lox10(rtld_errno), %g1;\
ldx [%o2 + %g1], %g1, %gdop(rtld_errno); \
st %o0, [%g1]; \
jmp %o7 + 8; \
mov -1, %o0;
# elif defined _LIBC_REENTRANT
# if IS_IN (libc)
# define SYSCALL_ERROR_ERRNO __libc_errno
# else
# define SYSCALL_ERROR_ERRNO errno
# endif
# define SYSCALL_ERROR_HANDLER \
0: SETUP_PIC_REG_LEAF(o2,g1) \
sethi %tie_hi22(SYSCALL_ERROR_ERRNO), %g1; \
add %g1, %tie_lo10(SYSCALL_ERROR_ERRNO), %g1; \
ldx [%o2 + %g1], %g1, %tie_ldx(SYSCALL_ERROR_ERRNO);\
st %o0, [%g7 + %g1]; \
jmp %o7 + 8; \
mov -1, %o0;
# else
# define SYSCALL_ERROR_HANDLER \
0: SETUP_PIC_REG_LEAF(o2,g1) \
sethi %gdop_hix22(errno), %g1;\
xor %g1, %gdop_lox10(errno), %g1;\
ldx [%o2 + %g1], %g1, %gdop(errno);\
st %o0, [%g1]; \
jmp %o7 + 8; \
mov -1, %o0;
# endif /* _LIBC_REENTRANT */
#endif /* PIC */
#else /* __ASSEMBLER__ */
#define __SYSCALL_STRING \
"ta 0x6d;" \
"bcc,pt %%xcc, 1f;" \
" mov 0, %%g1;" \
"sub %%g0, %%o0, %%o0;" \
"mov 1, %%g1;" \
"1:"
#define __SYSCALL_CLOBBERS \
"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"
#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 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 */
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