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36d423e203
The linux syscall ABI returns long, so the generic syscall code for linux should use long for the return value. This fixes the truncation of the return value of the syscall function when that does not fit into an int. Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
44 lines
1.4 KiB
C
44 lines
1.4 KiB
C
/* Indirect system call. Linux generic implementation.
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Copyright (C) 1997-2022 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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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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#include <stdarg.h>
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#include <sysdep.h>
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long int
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syscall (long int number, ...)
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{
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va_list args;
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va_start (args, number);
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long int a0 = va_arg (args, long int);
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long int a1 = va_arg (args, long int);
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long int a2 = va_arg (args, long int);
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long int a3 = va_arg (args, long int);
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long int a4 = va_arg (args, long int);
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long int a5 = va_arg (args, long int);
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va_end (args);
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long int r = INTERNAL_SYSCALL_NCS_CALL (number, a0, a1, a2, a3, a4, a5);
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if (__glibc_unlikely (INTERNAL_SYSCALL_ERROR_P (r)))
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{
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__set_errno (-r);
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return -1;
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}
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return r;
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}
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