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a1bd5f8673
Use <arch-syscall.h> instead of <asm/unistd.h> to obtain the system call numbers. A few direct includes of <asm/unistd.h> need to be removed (if the system call numbers are already provided indirectly by <sysdep.h>) or replaced with <sys/syscall.h>. Current Linux headers for alpha define the required system call names, so most of the _NR_* hacks are no longer needed. For the 32-bit arm architecture, eliminate the INTERNAL_SYSCALL_ARM macro, now that we have regular system call names for cacheflush and set_tls. There are more such cleanup opportunities for other architectures, but these cleanups are required to avoid macro redefinition errors during the build. For ia64, it is desirable to use <asm/break.h> directly to obtain the break number for system calls (which is not a system call number itself). This requires replacing __BREAK_SYSCALL with __IA64_BREAK_SYSCALL because the former is defined as an alias in <asm/unistd.h>, but not in <asm/break.h>. Reviewed-by: Siddhesh Poyarekar <siddhesh@sourceware.org>
34 lines
1.3 KiB
ArmAsm
34 lines
1.3 KiB
ArmAsm
/* Copyright (C) 1999-2020 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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Contributed by Jes Sorensen <Jes.Sorensen@cern.ch>.
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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 <sysdep.h>
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ENTRY(syscall)
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/* We are called like so:
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{out0,out1,...,out6} registers -> {NR, arg1, ..., arg6}
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Shift the register window so that {out1...out6} are available
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in {out0...out5} like the kernel syscall handler expects. */
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alloc r2=ar.pfs,1,0,8,0
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mov r15=r32 /* syscall number */
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break __IA64_BREAK_SYSCALL
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;;
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cmp.ne p6,p0=-1,r10 /* r10 = -1 on error */
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(p6) ret
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br.cond.spnt.few __syscall_error
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PSEUDO_END(syscall)
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