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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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2061f7beaa
Currently we have sys_sigpending and sys_old_getrlimit defined to use
COMPAT_SYS() in systbl.h, but then both are #defined to sys_ni_syscall
in systbl.S.
This seems to have been done when ppc and ppc64 were merged, in commit
9994a33 "Introduce entry_{32,64}.S, misc_{32,64}.S, systbl.S".
AFAICS there's no longer (or never was) any need for this, we can just
use SYSX() for both and remove the #defines to sys_ni_syscall.
The expansion before was:
#define COMPAT_SYS(func) .llong .sys_##func,.compat_sys_##func
#define sys_old_getrlimit sys_ni_syscall
COMPAT_SYS(old_getrlimit)
=>
.llong .sys_old_getrlimit,.compat_sys_old_getrlimit
=>
.llong .sys_ni_syscall,.compat_sys_old_getrlimit
After is:
#define SYSX(f, f3264, f32) .llong .f,.f3264
SYSX(sys_ni_syscall, compat_sys_old_getrlimit, sys_old_getrlimit)
=>
.llong .sys_ni_syscall,.compat_sys_old_getrlimit
ie. they are equivalent.
Finally both COMPAT_SYS() and SYSX() evaluate to sys_ni_syscall in the
Cell SPU code.
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
49 lines
1.6 KiB
ArmAsm
49 lines
1.6 KiB
ArmAsm
/*
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* This file contains the table of syscall-handling functions.
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* Copyright (C) 1995-1996 Gary Thomas (gdt@linuxppc.org)
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*
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* Largely rewritten by Cort Dougan (cort@cs.nmt.edu)
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* and Paul Mackerras.
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*
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* Adapted for iSeries by Mike Corrigan (mikejc@us.ibm.com)
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* PPC64 updates by Dave Engebretsen (engebret@us.ibm.com)
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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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#include <asm/ppc_asm.h>
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#ifdef CONFIG_PPC64
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#define SYSCALL(func) .llong DOTSYM(sys_##func),DOTSYM(sys_##func)
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#define COMPAT_SYS(func) .llong DOTSYM(sys_##func),DOTSYM(compat_sys_##func)
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#define PPC_SYS(func) .llong DOTSYM(ppc_##func),DOTSYM(ppc_##func)
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#define OLDSYS(func) .llong DOTSYM(sys_ni_syscall),DOTSYM(sys_ni_syscall)
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#define SYS32ONLY(func) .llong DOTSYM(sys_ni_syscall),DOTSYM(compat_sys_##func)
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#define SYSX(f, f3264, f32) .llong DOTSYM(f),DOTSYM(f3264)
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#else
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#define SYSCALL(func) .long sys_##func
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#define COMPAT_SYS(func) .long sys_##func
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#define PPC_SYS(func) .long ppc_##func
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#define OLDSYS(func) .long sys_##func
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#define SYS32ONLY(func) .long sys_##func
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#define SYSX(f, f3264, f32) .long f32
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#endif
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#define SYSCALL_SPU(func) SYSCALL(func)
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#define COMPAT_SYS_SPU(func) COMPAT_SYS(func)
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#define PPC_SYS_SPU(func) PPC_SYS(func)
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#define SYSX_SPU(f, f3264, f32) SYSX(f, f3264, f32)
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.section .rodata,"a"
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#ifdef CONFIG_PPC64
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.p2align 3
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#endif
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.globl sys_call_table
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sys_call_table:
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#include <asm/systbl.h>
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