mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-24 23:51:17 +07:00
529d235a0e
We currently have a "special" syscall for switching endianness. This is syscall number 0x1ebe, which is handled explicitly in the 64-bit syscall exception entry. That has a few problems, firstly the syscall number is outside of the usual range, which confuses various tools. For example strace doesn't recognise the syscall at all. Secondly it's handled explicitly as a special case in the syscall exception entry, which is complicated enough without it. As a first step toward removing the special syscall, we need to add a regular syscall that implements the same functionality. The logic is simple, it simply toggles the MSR_LE bit in the userspace MSR. This is the same as the special syscall, with the caveat that the special syscall clobbers fewer registers. This version clobbers r9-r12, XER, CTR, and CR0-1,5-7. Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
60 lines
1.6 KiB
C
60 lines
1.6 KiB
C
/*
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* This file contains the system call numbers.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version
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* 2 of the License, or (at your option) any later version.
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*/
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#ifndef _ASM_POWERPC_UNISTD_H_
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#define _ASM_POWERPC_UNISTD_H_
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#include <uapi/asm/unistd.h>
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#define __NR_syscalls 364
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#define __NR__exit __NR_exit
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#define NR_syscalls __NR_syscalls
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#ifndef __ASSEMBLY__
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#include <linux/types.h>
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#include <linux/compiler.h>
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#include <linux/linkage.h>
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#define __ARCH_WANT_OLD_READDIR
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#define __ARCH_WANT_STAT64
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#define __ARCH_WANT_SYS_ALARM
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#define __ARCH_WANT_SYS_GETHOSTNAME
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#define __ARCH_WANT_SYS_IPC
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#define __ARCH_WANT_SYS_PAUSE
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#define __ARCH_WANT_SYS_SIGNAL
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#define __ARCH_WANT_SYS_TIME
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#define __ARCH_WANT_SYS_UTIME
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#define __ARCH_WANT_SYS_WAITPID
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#define __ARCH_WANT_SYS_SOCKETCALL
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#define __ARCH_WANT_SYS_FADVISE64
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#define __ARCH_WANT_SYS_GETPGRP
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#define __ARCH_WANT_SYS_LLSEEK
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#define __ARCH_WANT_SYS_NICE
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#define __ARCH_WANT_SYS_OLD_GETRLIMIT
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#define __ARCH_WANT_SYS_OLD_UNAME
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#define __ARCH_WANT_SYS_OLDUMOUNT
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#define __ARCH_WANT_SYS_SIGPENDING
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#define __ARCH_WANT_SYS_SIGPROCMASK
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#ifdef CONFIG_PPC32
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#define __ARCH_WANT_OLD_STAT
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#endif
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#ifdef CONFIG_PPC64
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#define __ARCH_WANT_COMPAT_SYS_TIME
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#define __ARCH_WANT_SYS_NEWFSTATAT
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#define __ARCH_WANT_COMPAT_SYS_SENDFILE
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#endif
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#define __ARCH_WANT_SYS_FORK
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#define __ARCH_WANT_SYS_VFORK
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#define __ARCH_WANT_SYS_CLONE
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#endif /* __ASSEMBLY__ */
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#endif /* _ASM_POWERPC_UNISTD_H_ */
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