Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 0a4690cf authored by Stephen Rothwell's avatar Stephen Rothwell Committed by Paul Mackerras
Browse files

[POWERPC] Check that the syscall table matches the syscall numbers 



Also check that __NR_syscalls has been updated appropriately.

Hopefully this will catch any out of order additions to the
table in the future.

Signed-off-by: default avatarStephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: default avatarPaul Mackerras <paulus@samba.org>
parent 4ec161cf

arch/powerpc/kernel/Makefile

+10 −0
Original line number Diff line number Diff line
@@ -91,3 +91,13 @@ obj-$(CONFIG_PPC64) += $(obj64-y) 


extra-$(CONFIG_PPC_FPU)		+= fpu.o

extra-$(CONFIG_PPC64)		+= entry_64.o



extra-y				+= systbl_chk.i

$(obj)/systbl.o:		systbl_chk



quiet_cmd_systbl_chk = CALL    $<

      cmd_systbl_chk = $(CONFIG_SHELL) $< $(obj)/systbl_chk.i



PHONY += systbl_chk

systbl_chk: $(src)/systbl_chk.sh $(obj)/systbl_chk.i

	$(call cmd,systbl_chk)

arch/powerpc/kernel/systbl_chk.c

0 → 100644
+58 −0
Original line number Diff line number Diff line 
/*

 * This file, when run through CPP produces a list of syscall numbers

 * in the order of systbl.h.  That way we can check for gaps and syscalls

 * that are out of order.

 *

 * Unfortunately, we cannot check for the correct ordering of entries

 * using SYSX().

 *

 * Copyright © IBM Corporation

 *

 * 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.

 */

#include <asm/unistd.h>



#define SYSCALL(func)		__NR_##func

#define COMPAT_SYS(func)	__NR_##func

#define PPC_SYS(func)		__NR_##func

#ifdef CONFIG_PPC64

#define OLDSYS(func)		-1

#define SYS32ONLY(func)		-1

#else

#define OLDSYS(func)		__NR_old##func

#define SYS32ONLY(func)		__NR_##func

#endif

#define SYSX(f, f3264, f32)	-1



#define SYSCALL_SPU(func)	SYSCALL(func)

#define COMPAT_SYS_SPU(func)	COMPAT_SYS(func)

#define PPC_SYS_SPU(func)	PPC_SYS(func)

#define SYSX_SPU(f, f3264, f32)	SYSX(f, f3264, f32)



/* Just insert a marker for ni_syscalls */

#define	__NR_ni_syscall		-1



/*

 * These are the known exceptions.

 * Hopefully, there will be no more.

 */

#define	__NR_llseek		__NR__llseek

#undef	__NR_umount

#define	__NR_umount		__NR_umount2

#define	__NR_old_getrlimit	__NR_getrlimit

#define	__NR_newstat		__NR_stat

#define	__NR_newlstat		__NR_lstat

#define	__NR_newfstat		__NR_fstat

#define	__NR_newuname		__NR_uname

#define	__NR_sysctl		__NR__sysctl

#define __NR_olddebug_setcontext	__NR_sys_debug_setcontext



/* We call sys_ugetrlimit for syscall number __NR_getrlimit */

#define getrlimit		ugetrlimit



START_TABLE

#include <asm/systbl.h>

END_TABLE __NR_syscalls

arch/powerpc/kernel/systbl_chk.sh

0 → 100644
+33 −0
Original line number Diff line number Diff line 
#!/bin/sh

#

# Just process the CPP output from systbl_chk.c and complain

# if anything is out of order.

#

# Copyright © 2008 IBM Corporation

#

# 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.



awk	'BEGIN { num = -1; }	# Ignore the beginning of the file

	/^#/ { next; }

	/^[ \t]*$/ { next; }

	/^START_TABLE/ { num = 0; next; }

	/^END_TABLE/ {

		if (num != $2) {

			printf "__NR_syscalls (%s) is not one more than the last syscall (%s)\n",

				$2, num - 1;

			exit(1);

		}

		num = -1;	# Ignore the rest of the file

	}

	{

		if (num == -1) next;

		if (($1 != -1) && ($1 != num)) {

			printf "Syscall %s out of order (expected %s)\n",

				$1, num;

			exit(1);

		};

		num++;

	}' "$1"