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ff500a623d
No architecture currently defines the vDSO symbol. On architectures with 64-bit time_t the HAVE_CLOCK_GETTIME_VSYSCALL is renamed to HAVE_CLOCK_GETTIME64_VSYSCALL, it simplifies clock_gettime code. Reviewed-by: Siddhesh Poyarekar <siddhesh@sourceware.org>
204 lines
6.6 KiB
C
204 lines
6.6 KiB
C
/* Copyright (C) 2000-2020 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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Contributed by Jakub Jelinek <jakub@redhat.com>, 2000.
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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 Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the 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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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<https://www.gnu.org/licenses/>. */
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#ifndef _LINUX_SPARC_SYSDEP_H
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#define _LINUX_SPARC_SYSDEP_H 1
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#include <sysdeps/unix/sysdep.h>
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#include <sysdeps/unix/sysv/linux/sysdep.h>
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#include <sysdeps/sparc/sysdep.h>
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#ifdef __ASSEMBLER__
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#define ret retl; nop
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#define ret_NOERRNO retl; nop
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#define ret_ERRVAL 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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#else /* __ASSEMBLER__ */
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#define INTERNAL_VSYSCALL_CALL(funcptr, err, nr, args...) \
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({ \
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long _ret = funcptr (args); \
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err = ((unsigned long) (_ret) >= (unsigned long) -4095L); \
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_ret; \
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})
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# define VDSO_NAME "LINUX_2.6"
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# define VDSO_HASH 61765110
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/* List of system calls which are supported as vsyscalls. */
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# ifdef __arch64__
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# define HAVE_CLOCK_GETTIME64_VSYSCALL "__vdso_clock_gettime"
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# else
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# define HAVE_CLOCK_GETTIME_VSYSCALL "__vdso_clock_gettime"
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# endif
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# define HAVE_GETTIMEOFDAY_VSYSCALL "__vdso_gettimeofday"
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#undef INLINE_SYSCALL
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#define INLINE_SYSCALL(name, nr, args...) \
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({ INTERNAL_SYSCALL_DECL(err); \
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unsigned long resultvar = INTERNAL_SYSCALL(name, err, nr, args);\
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if (INTERNAL_SYSCALL_ERROR_P (resultvar, err)) \
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{ \
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__set_errno (INTERNAL_SYSCALL_ERRNO (resultvar, err)); \
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resultvar = (unsigned long) -1; \
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} \
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(long) resultvar; \
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})
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#undef INTERNAL_SYSCALL_DECL
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#define INTERNAL_SYSCALL_DECL(err) \
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register long err __asm__("g1");
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#undef INTERNAL_SYSCALL
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#define INTERNAL_SYSCALL(name, err, nr, args...) \
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inline_syscall##nr(__SYSCALL_STRING, err, __NR_##name, args)
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#undef INTERNAL_SYSCALL_NCS
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#define INTERNAL_SYSCALL_NCS(name, err, nr, args...) \
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inline_syscall##nr(__SYSCALL_STRING, err, name, args)
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#undef INTERNAL_SYSCALL_ERROR_P
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#define INTERNAL_SYSCALL_ERROR_P(val, err) \
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((void) (val), __builtin_expect((err) != 0, 0))
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#undef INTERNAL_SYSCALL_ERRNO
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#define INTERNAL_SYSCALL_ERRNO(val, err) (-(val))
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#define inline_syscall0(string,err,name,dummy...) \
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({ \
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register long __o0 __asm__ ("o0"); \
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err = name; \
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__asm __volatile (string : "=r" (err), "=r" (__o0) : \
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"0" (err) : \
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__SYSCALL_CLOBBERS); \
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__o0; \
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})
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#define inline_syscall1(string,err,name,arg1) \
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({ \
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register long __o0 __asm__ ("o0") = (long)(arg1); \
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err = name; \
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__asm __volatile (string : "=r" (err), "=r" (__o0) : \
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"0" (err), "1" (__o0) : \
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__SYSCALL_CLOBBERS); \
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__o0; \
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})
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#define inline_syscall2(string,err,name,arg1,arg2) \
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({ \
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register long __o0 __asm__ ("o0") = (long)(arg1); \
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register long __o1 __asm__ ("o1") = (long)(arg2); \
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err = name; \
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__asm __volatile (string : "=r" (err), "=r" (__o0) : \
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"0" (err), "1" (__o0), "r" (__o1) : \
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__SYSCALL_CLOBBERS); \
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__o0; \
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})
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#define inline_syscall3(string,err,name,arg1,arg2,arg3) \
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({ \
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register long __o0 __asm__ ("o0") = (long)(arg1); \
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register long __o1 __asm__ ("o1") = (long)(arg2); \
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register long __o2 __asm__ ("o2") = (long)(arg3); \
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err = name; \
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__asm __volatile (string : "=r" (err), "=r" (__o0) : \
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"0" (err), "1" (__o0), "r" (__o1), \
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"r" (__o2) : \
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__SYSCALL_CLOBBERS); \
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__o0; \
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})
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#define inline_syscall4(string,err,name,arg1,arg2,arg3,arg4) \
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({ \
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register long __o0 __asm__ ("o0") = (long)(arg1); \
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register long __o1 __asm__ ("o1") = (long)(arg2); \
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register long __o2 __asm__ ("o2") = (long)(arg3); \
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register long __o3 __asm__ ("o3") = (long)(arg4); \
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err = name; \
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__asm __volatile (string : "=r" (err), "=r" (__o0) : \
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"0" (err), "1" (__o0), "r" (__o1), \
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"r" (__o2), "r" (__o3) : \
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__SYSCALL_CLOBBERS); \
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__o0; \
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})
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#define inline_syscall5(string,err,name,arg1,arg2,arg3,arg4,arg5) \
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({ \
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register long __o0 __asm__ ("o0") = (long)(arg1); \
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register long __o1 __asm__ ("o1") = (long)(arg2); \
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register long __o2 __asm__ ("o2") = (long)(arg3); \
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register long __o3 __asm__ ("o3") = (long)(arg4); \
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register long __o4 __asm__ ("o4") = (long)(arg5); \
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err = name; \
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__asm __volatile (string : "=r" (err), "=r" (__o0) : \
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"0" (err), "1" (__o0), "r" (__o1), \
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"r" (__o2), "r" (__o3), "r" (__o4) : \
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__SYSCALL_CLOBBERS); \
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__o0; \
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})
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#define inline_syscall6(string,err,name,arg1,arg2,arg3,arg4,arg5,arg6) \
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({ \
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register long __o0 __asm__ ("o0") = (long)(arg1); \
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register long __o1 __asm__ ("o1") = (long)(arg2); \
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register long __o2 __asm__ ("o2") = (long)(arg3); \
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register long __o3 __asm__ ("o3") = (long)(arg4); \
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register long __o4 __asm__ ("o4") = (long)(arg5); \
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register long __o5 __asm__ ("o5") = (long)(arg6); \
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err = name; \
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__asm __volatile (string : "=r" (err), "=r" (__o0) : \
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"0" (err), "1" (__o0), "r" (__o1), \
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"r" (__o2), "r" (__o3), "r" (__o4), \
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"r" (__o5) : \
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__SYSCALL_CLOBBERS); \
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__o0; \
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})
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#define INLINE_CLONE_SYSCALL(arg1,arg2,arg3,arg4,arg5) \
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({ \
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register long __o0 __asm__ ("o0") = (long)(arg1); \
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register long __o1 __asm__ ("o1") = (long)(arg2); \
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register long __o2 __asm__ ("o2") = (long)(arg3); \
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register long __o3 __asm__ ("o3") = (long)(arg4); \
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register long __o4 __asm__ ("o4") = (long)(arg5); \
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register long __g1 __asm__ ("g1") = __NR_clone; \
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__asm __volatile (__SYSCALL_STRING : \
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"=r" (__g1), "=r" (__o0), "=r" (__o1) : \
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"0" (__g1), "1" (__o0), "2" (__o1), \
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"r" (__o2), "r" (__o3), "r" (__o4) : \
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__SYSCALL_CLOBBERS); \
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if (INTERNAL_SYSCALL_ERROR_P (__o0, __g1)) \
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{ \
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__set_errno (INTERNAL_SYSCALL_ERRNO (__o0, __g1)); \
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__o0 = -1L; \
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} \
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else \
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{ \
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__o0 &= (__o1 - 1); \
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} \
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__o0; \
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})
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#endif /* __ASSEMBLER__ */
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#endif /* _LINUX_SPARC_SYSDEP_H */
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