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linux/arch/powerpc/kernel/systbl.S

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treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 Based on 1 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license as published by the free software foundation either version 2 of the license or at your option any later version extracted by the scancode license scanner the SPDX license identifier GPL-2.0-or-later has been chosen to replace the boilerplate/reference in 3029 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Allison Randal <allison@lohutok.net> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190527070032.746973796@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-05-27 06:55:01 +00:00
/* SPDX-License-Identifier: GPL-2.0-or-later */
powerpc: Introduce entry_{32,64}.S, misc_{32,64}.S, systbl.S The system call table has been consolidated into systbl.S. We have separate 32-bit and 64-bit versions of entry.S and misc.S since the code is mostly sufficiently different to be not worth merging. There are some common bits that will be extracted in future. Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-10-10 12:36:14 +00:00
/*
* This file contains the table of syscall-handling functions.
* Copyright (C) 1995-1996 Gary Thomas (gdt@linuxppc.org)
*
* Largely rewritten by Cort Dougan (cort@cs.nmt.edu)
* and Paul Mackerras.
*
* Adapted for iSeries by Mike Corrigan (mikejc@us.ibm.com)
* PPC64 updates by Dave Engebretsen (engebret@us.ibm.com)
*/
#include <asm/ppc_asm.h>
powerpc: Don't use a function descriptor for system call table There is no need to create a function descriptor for the system call table. By using one we force the system call table into the text section and it really belongs in the rodata section. This also removes another use of dot symbols. Signed-off-by: Anton Blanchard <anton@samba.org>
2014-02-04 05:05:53 +00:00
.section .rodata,"a"
powerpc: Introduce entry_{32,64}.S, misc_{32,64}.S, systbl.S The system call table has been consolidated into systbl.S. We have separate 32-bit and 64-bit versions of entry.S and misc.S since the code is mostly sufficiently different to be not worth merging. There are some common bits that will be extracted in future. Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-10-10 12:36:14 +00:00
#ifdef CONFIG_PPC64
[POWERPC] Align the sys_call_table Our _GLOBAL macro does a ".align 2" so the alignment is fine for 32 bit, but on 64 bit it is possible for it to end up only 4 byte aligned. I don't know if it matters, but it can't hurt to 8 byte align it. It also means that when we build with --emit_relocs, none of our 64 bit relocations are to misaligned places. Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-10-09 07:03:57 +00:00
.p2align 3
powerpc: Introduce entry_{32,64}.S, misc_{32,64}.S, systbl.S The system call table has been consolidated into systbl.S. We have separate 32-bit and 64-bit versions of entry.S and misc.S since the code is mostly sufficiently different to be not worth merging. There are some common bits that will be extracted in future. Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-10-10 12:36:14 +00:00
#endif
powerpc: Don't use a function descriptor for system call table There is no need to create a function descriptor for the system call table. By using one we force the system call table into the text section and it really belongs in the rodata section. This also removes another use of dot symbols. Signed-off-by: Anton Blanchard <anton@samba.org>
2014-02-04 05:05:53 +00:00
.globl sys_call_table
sys_call_table:
powerpc: generate uapi header and system call table files System call table generation script must be run to gener- ate unistd_32/64.h and syscall_table_32/64/c32/spu.h files. This patch will have changes which will invokes the script. This patch will generate unistd_32/64.h and syscall_table- _32/64/c32/spu.h files by the syscall table generation script invoked by parisc/Makefile and the generated files against the removed files must be identical. The generated uapi header file will be included in uapi/- asm/unistd.h and generated system call table header file will be included by kernel/systbl.S file. Signed-off-by: Firoz Khan <firoz.khan@linaro.org> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2018-12-17 10:40:36 +00:00
#ifdef CONFIG_PPC64
powerpc: remove nargs from __SYSCALL The __SYSCALL macro's arguments are system call number, system call entry name and number of arguments for the system call. Argument- nargs in __SYSCALL(nr, entry, nargs) is neither calculated nor used anywhere. So it would be better to keep the implementaion as __SYSCALL(nr, entry). This will unifies the implementation with some other architetures too. Signed-off-by: Firoz Khan <firoz.khan@linaro.org> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2019-01-02 15:02:03 +00:00
#define __SYSCALL(nr, entry) .8byte DOTSYM(entry)
powerpc: generate uapi header and system call table files System call table generation script must be run to gener- ate unistd_32/64.h and syscall_table_32/64/c32/spu.h files. This patch will have changes which will invokes the script. This patch will generate unistd_32/64.h and syscall_table- _32/64/c32/spu.h files by the syscall table generation script invoked by parisc/Makefile and the generated files against the removed files must be identical. The generated uapi header file will be included in uapi/- asm/unistd.h and generated system call table header file will be included by kernel/systbl.S file. Signed-off-by: Firoz Khan <firoz.khan@linaro.org> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2018-12-17 10:40:36 +00:00
#include <asm/syscall_table_64.h>
#undef __SYSCALL
#else
powerpc: remove nargs from __SYSCALL The __SYSCALL macro's arguments are system call number, system call entry name and number of arguments for the system call. Argument- nargs in __SYSCALL(nr, entry, nargs) is neither calculated nor used anywhere. So it would be better to keep the implementaion as __SYSCALL(nr, entry). This will unifies the implementation with some other architetures too. Signed-off-by: Firoz Khan <firoz.khan@linaro.org> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2019-01-02 15:02:03 +00:00
#define __SYSCALL(nr, entry) .long entry
powerpc: generate uapi header and system call table files System call table generation script must be run to gener- ate unistd_32/64.h and syscall_table_32/64/c32/spu.h files. This patch will have changes which will invokes the script. This patch will generate unistd_32/64.h and syscall_table- _32/64/c32/spu.h files by the syscall table generation script invoked by parisc/Makefile and the generated files against the removed files must be identical. The generated uapi header file will be included in uapi/- asm/unistd.h and generated system call table header file will be included by kernel/systbl.S file. Signed-off-by: Firoz Khan <firoz.khan@linaro.org> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2018-12-17 10:40:36 +00:00
#include <asm/syscall_table_32.h>
#undef __SYSCALL
#endif
powerpc: Don't use a function descriptor for system call table There is no need to create a function descriptor for the system call table. By using one we force the system call table into the text section and it really belongs in the rodata section. This also removes another use of dot symbols. Signed-off-by: Anton Blanchard <anton@samba.org>
2014-02-04 05:05:53 +00:00
powerpc: split compat syscall table out from native table PowerPC uses a syscall table with native and compat calls interleaved, which is a slightly simpler way to define two matching tables. As we move to having the tables generated, that advantage is no longer important, but the interleaved table gets in the way of using the same scripts as on the other archit- ectures. Split out a new compat_sys_call_table symbol that contains all the compat calls, and leave the main table for the nat- ive calls, to more closely match the method we use every- where else. Suggested-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Firoz Khan <firoz.khan@linaro.org> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2018-12-17 10:40:35 +00:00
#ifdef CONFIG_COMPAT
.globl compat_sys_call_table
compat_sys_call_table:
powerpc: move macro definition from asm/systbl.h Move the macro definition for compat_sys_sigsuspend from asm/systbl.h to the file which it is getting included. One of the patch in this patch series is generating uapi header and syscall table files. In order to come up with a common implimentation across all architecture, we need to do this change. This change will simplify the implementation of system call table generation script and help to come up a common implementation across all architecture. Signed-off-by: Firoz Khan <firoz.khan@linaro.org> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2018-12-17 10:40:33 +00:00
#define compat_sys_sigsuspend sys_sigsuspend
powerpc: remove nargs from __SYSCALL The __SYSCALL macro's arguments are system call number, system call entry name and number of arguments for the system call. Argument- nargs in __SYSCALL(nr, entry, nargs) is neither calculated nor used anywhere. So it would be better to keep the implementaion as __SYSCALL(nr, entry). This will unifies the implementation with some other architetures too. Signed-off-by: Firoz Khan <firoz.khan@linaro.org> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2019-01-02 15:02:03 +00:00
#define __SYSCALL(nr, entry) .8byte DOTSYM(entry)
powerpc: generate uapi header and system call table files System call table generation script must be run to gener- ate unistd_32/64.h and syscall_table_32/64/c32/spu.h files. This patch will have changes which will invokes the script. This patch will generate unistd_32/64.h and syscall_table- _32/64/c32/spu.h files by the syscall table generation script invoked by parisc/Makefile and the generated files against the removed files must be identical. The generated uapi header file will be included in uapi/- asm/unistd.h and generated system call table header file will be included by kernel/systbl.S file. Signed-off-by: Firoz Khan <firoz.khan@linaro.org> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2018-12-17 10:40:36 +00:00
#include <asm/syscall_table_c32.h>
#undef __SYSCALL
powerpc: split compat syscall table out from native table PowerPC uses a syscall table with native and compat calls interleaved, which is a slightly simpler way to define two matching tables. As we move to having the tables generated, that advantage is no longer important, but the interleaved table gets in the way of using the same scripts as on the other archit- ectures. Split out a new compat_sys_call_table symbol that contains all the compat calls, and leave the main table for the nat- ive calls, to more closely match the method we use every- where else. Suggested-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Firoz Khan <firoz.khan@linaro.org> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2018-12-17 10:40:35 +00:00
#endif
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