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c261718b3f
The sparc INTERNAL_SYSCALL macro might clobber the register parameter if the argument itself might clobber any register (a function call for instance). This patch fixes it by using temporary variables for the expressions between the register assignments (as indicated by GCC documentation, 6.47.5.2 Specifying Registers for Local Variables). It is similar to the fix done for MIPS (bug 25523). Checked on sparc64-linux-gnu and sparcv9-linux-gnu.
222 lines
7.5 KiB
C
222 lines
7.5 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 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) do { } while (0)
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#undef INTERNAL_SYSCALL
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#define INTERNAL_SYSCALL(name, err, nr, args...) \
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internal_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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internal_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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((unsigned long int) (val) > -4096UL)
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#undef INTERNAL_SYSCALL_ERRNO
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#define INTERNAL_SYSCALL_ERRNO(val, err) (-(val))
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#define internal_syscall0(string,err,name,dummy...) \
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({ \
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register long int __g1 __asm__ ("g1") = (name); \
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register long __o0 __asm__ ("o0"); \
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__asm __volatile (string : "=r" (__o0) : \
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"r" (__g1) : \
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__SYSCALL_CLOBBERS); \
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__o0; \
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})
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#define internal_syscall1(string,err,name,arg1) \
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({ \
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long int _arg1 = (long int) (arg1); \
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register long int __g1 __asm__("g1") = (name); \
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register long int __o0 __asm__ ("o0") = _arg1; \
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__asm __volatile (string : "=r" (__o0) : \
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"r" (__g1), "0" (__o0) : \
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__SYSCALL_CLOBBERS); \
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__o0; \
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})
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#define internal_syscall2(string,err,name,arg1,arg2) \
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({ \
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long int _arg1 = (long int) (arg1); \
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long int _arg2 = (long int) (arg2); \
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register long int __g1 __asm__("g1") = (name); \
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register long int __o0 __asm__ ("o0") = _arg1; \
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register long int __o1 __asm__ ("o1") = _arg2; \
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__asm __volatile (string : "=r" (__o0) : \
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"r" (__g1), "0" (__o0), "r" (__o1) : \
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__SYSCALL_CLOBBERS); \
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__o0; \
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})
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#define internal_syscall3(string,err,name,arg1,arg2,arg3) \
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({ \
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long int _arg1 = (long int) (arg1); \
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long int _arg2 = (long int) (arg2); \
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long int _arg3 = (long int) (arg3); \
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register long int __g1 __asm__("g1") = (name); \
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register long int __o0 __asm__ ("o0") = _arg1; \
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register long int __o1 __asm__ ("o1") = _arg2; \
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register long int __o2 __asm__ ("o2") = _arg3; \
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__asm __volatile (string : "=r" (__o0) : \
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"r" (__g1), "0" (__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 internal_syscall4(string,err,name,arg1,arg2,arg3,arg4) \
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({ \
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long int _arg1 = (long int) (arg1); \
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long int _arg2 = (long int) (arg2); \
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long int _arg3 = (long int) (arg3); \
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long int _arg4 = (long int) (arg4); \
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register long int __g1 __asm__("g1") = (name); \
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register long int __o0 __asm__ ("o0") = _arg1; \
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register long int __o1 __asm__ ("o1") = _arg2; \
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register long int __o2 __asm__ ("o2") = _arg3; \
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register long int __o3 __asm__ ("o3") = _arg4; \
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__asm __volatile (string : "=r" (__o0) : \
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"r" (__g1), "0" (__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 internal_syscall5(string,err,name,arg1,arg2,arg3,arg4,arg5) \
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({ \
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long int _arg1 = (long int) (arg1); \
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long int _arg2 = (long int) (arg2); \
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long int _arg3 = (long int) (arg3); \
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long int _arg4 = (long int) (arg4); \
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long int _arg5 = (long int) (arg5); \
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register long int __g1 __asm__("g1") = (name); \
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register long int __o0 __asm__ ("o0") = _arg1; \
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register long int __o1 __asm__ ("o1") = _arg2; \
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register long int __o2 __asm__ ("o2") = _arg3; \
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register long int __o3 __asm__ ("o3") = _arg4; \
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register long int __o4 __asm__ ("o4") = _arg5; \
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__asm __volatile (string : "=r" (__o0) : \
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"r" (__g1), "0" (__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 internal_syscall6(string,err,name,arg1,arg2,arg3,arg4,arg5,arg6)\
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({ \
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long int _arg1 = (long int) (arg1); \
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long int _arg2 = (long int) (arg2); \
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long int _arg3 = (long int) (arg3); \
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long int _arg4 = (long int) (arg4); \
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long int _arg5 = (long int) (arg5); \
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long int _arg6 = (long int) (arg6); \
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register long int __g1 __asm__("g1") = (name); \
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register long int __o0 __asm__ ("o0") = _arg1; \
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register long int __o1 __asm__ ("o1") = _arg2; \
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register long int __o2 __asm__ ("o2") = _arg3; \
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register long int __o3 __asm__ ("o3") = _arg4; \
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register long int __o4 __asm__ ("o4") = _arg5; \
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register long int __o5 __asm__ ("o5") = _arg6; \
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__asm __volatile (string : "=r" (__o0) : \
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"r" (__g1), "0" (__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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long int _arg1 = (long int) (arg1); \
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long int _arg2 = (long int) (arg2); \
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long int _arg3 = (long int) (arg3); \
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long int _arg4 = (long int) (arg4); \
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long int _arg5 = (long int) (arg5); \
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register long int __o0 __asm__ ("o0") = _arg1; \
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register long int __o1 __asm__ ("o1") = _arg2; \
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register long int __o2 __asm__ ("o2") = _arg3; \
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register long int __o3 __asm__ ("o3") = _arg4; \
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register long int __o4 __asm__ ("o4") = _arg5; \
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register long int __g1 __asm__ ("g1") = __NR_clone; \
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__asm __volatile (__SYSCALL_STRING : \
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"=r" (__o0), "=r" (__o1) : \
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"r" (__g1), "0" (__o0), "1" (__o1), \
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"r" (__o2), "r" (__o3), "r" (__o4) : \
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__SYSCALL_CLOBBERS); \
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if (__glibc_unlikely ((unsigned long int) (__o0) > -4096UL)) \
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{ \
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__set_errno (-__o0); \
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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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