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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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66d857b08b
There is a lot of common code that could be shared between the m68k and m68knommu arch branches. It makes sense to merge the two branches into a single directory structure so that we can more easily share that common code. This is a brute force merge, based on a script from Stephen King <sfking@fdwdc.com>, which was originally written by Arnd Bergmann <arnd@arndb.de>. > The script was inspired by the script Sam Ravnborg used to merge the > includes from m68knommu. For those files common to both arches but > differing in content, the m68k version of the file is renamed to > <file>_mm.<ext> and the m68knommu version of the file is moved into the > corresponding m68k directory and renamed <file>_no.<ext> and a small > wrapper file <file>.<ext> is used to select between the two version. Files > that are common to both but don't differ are removed from the m68knommu > tree and files and directories that are unique to the m68knommu tree are > moved to the m68k tree. Finally, the arch/m68knommu tree is removed. > > To select between the the versions of the files, the wrapper uses > > #ifdef CONFIG_MMU > #include <file>_mm.<ext> > #else > #include <file>_no.<ext> > #endif On top of this file merge I have done a simplistic merge of m68k and m68knommu Kconfig, which primarily attempts to keep existing options and menus in place. Other than a handful of options being moved it produces identical .config outputs on m68k and m68knommu targets I tested it on. With this in place there is now quite a bit of scope for merge cleanups in future patches. Signed-off-by: Greg Ungerer <gerg@uclinux.org>
135 lines
2.6 KiB
ArmAsm
135 lines
2.6 KiB
ArmAsm
/*
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* linux/arch/m68knommu/kernel/entry.S
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*
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* Copyright (C) 1999-2002, Greg Ungerer (gerg@snapgear.com)
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* Copyright (C) 1998 D. Jeff Dionne <jeff@lineo.ca>,
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* Kenneth Albanowski <kjahds@kjahds.com>,
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* Copyright (C) 2000 Lineo Inc. (www.lineo.com)
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*
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* Based on:
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*
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* linux/arch/m68k/kernel/entry.S
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*
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* Copyright (C) 1991, 1992 Linus Torvalds
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*
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* This file is subject to the terms and conditions of the GNU General Public
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* License. See the file README.legal in the main directory of this archive
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* for more details.
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*
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* Linux/m68k support by Hamish Macdonald
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*
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* 68060 fixes by Jesper Skov
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* ColdFire support by Greg Ungerer (gerg@snapgear.com)
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* 5307 fixes by David W. Miller
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* linux 2.4 support David McCullough <davidm@snapgear.com>
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*/
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#include <linux/sys.h>
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#include <linux/linkage.h>
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#include <asm/errno.h>
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#include <asm/setup.h>
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#include <asm/segment.h>
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#include <asm/asm-offsets.h>
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#include <asm/entry.h>
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#include <asm/unistd.h>
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.text
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.globl buserr
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.globl trap
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.globl ret_from_exception
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.globl ret_from_signal
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.globl sys_fork
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.globl sys_clone
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.globl sys_vfork
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ENTRY(buserr)
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SAVE_ALL
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moveq #-1,%d0
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movel %d0,%sp@(PT_OFF_ORIG_D0)
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movel %sp,%sp@- /* stack frame pointer argument */
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jsr buserr_c
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addql #4,%sp
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jra ret_from_exception
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ENTRY(trap)
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SAVE_ALL
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moveq #-1,%d0
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movel %d0,%sp@(PT_OFF_ORIG_D0)
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movel %sp,%sp@- /* stack frame pointer argument */
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jsr trap_c
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addql #4,%sp
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jra ret_from_exception
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#ifdef TRAP_DBG_INTERRUPT
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.globl dbginterrupt
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ENTRY(dbginterrupt)
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SAVE_ALL
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moveq #-1,%d0
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movel %d0,%sp@(PT_OFF_ORIG_D0)
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movel %sp,%sp@- /* stack frame pointer argument */
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jsr dbginterrupt_c
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addql #4,%sp
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jra ret_from_exception
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#endif
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ENTRY(reschedule)
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/* save top of frame */
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pea %sp@
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jbsr set_esp0
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addql #4,%sp
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pea ret_from_exception
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jmp schedule
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ENTRY(ret_from_fork)
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movel %d1,%sp@-
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jsr schedule_tail
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addql #4,%sp
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jra ret_from_exception
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ENTRY(sys_fork)
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SAVE_SWITCH_STACK
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pea %sp@(SWITCH_STACK_SIZE)
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jbsr m68k_fork
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addql #4,%sp
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RESTORE_SWITCH_STACK
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rts
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ENTRY(sys_vfork)
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SAVE_SWITCH_STACK
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pea %sp@(SWITCH_STACK_SIZE)
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jbsr m68k_vfork
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addql #4,%sp
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RESTORE_SWITCH_STACK
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rts
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ENTRY(sys_clone)
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SAVE_SWITCH_STACK
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pea %sp@(SWITCH_STACK_SIZE)
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jbsr m68k_clone
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addql #4,%sp
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RESTORE_SWITCH_STACK
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rts
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ENTRY(sys_sigreturn)
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SAVE_SWITCH_STACK
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jbsr do_sigreturn
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RESTORE_SWITCH_STACK
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rts
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ENTRY(sys_rt_sigreturn)
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SAVE_SWITCH_STACK
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jbsr do_rt_sigreturn
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RESTORE_SWITCH_STACK
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rts
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ENTRY(ret_from_user_signal)
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moveq #__NR_sigreturn,%d0
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trap #0
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ENTRY(ret_from_user_rt_signal)
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movel #__NR_rt_sigreturn,%d0
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trap #0
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