CRIS v10: Cleanup kernel/entry.S CVS log and id.
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Jesper Nilsson
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028a731f98
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72af70cfec
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/* $Id: entry.S,v 1.28 2005/06/20 05:06:30 starvik Exp $
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*
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/*
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* linux/arch/cris/entry.S
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*
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* Copyright (C) 2000, 2001, 2002 Axis Communications AB
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*
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* Authors: Bjorn Wesen (bjornw@axis.com)
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*
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* $Log: entry.S,v $
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* Revision 1.28 2005/06/20 05:06:30 starvik
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* Remove unnecessary diff to kernel.org tree
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*
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* Revision 1.27 2005/03/04 08:16:16 starvik
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* Merge of Linux 2.6.11.
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*
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* Revision 1.26 2005/01/11 13:49:47 starvik
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* Added NMI handler.
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*
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* Revision 1.25 2004/12/27 11:18:32 starvik
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* Merge of Linux 2.6.10 (not functional yet).
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*
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* Revision 1.24 2004/12/22 10:41:23 starvik
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* Updates to make v10 compile with the latest SMP aware generic code (even
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* though v10 will never have SMP).
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*
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* Revision 1.23 2004/10/19 13:07:37 starvik
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* Merge of Linux 2.6.9
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*
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* Revision 1.22 2004/06/21 10:29:55 starvik
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* Merge of Linux 2.6.7
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*
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* Revision 1.21 2004/06/09 05:30:27 starvik
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* Clean up multiple interrupt handling.
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* Prevent interrupts from interrupting each other.
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* Handle all active interrupts.
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*
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* Revision 1.20 2004/06/08 08:55:32 starvik
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* Removed unused code
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*
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* Revision 1.19 2004/06/04 11:56:15 starvik
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* Implemented page table lookup for refills in assembler for improved performance.
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*
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* Revision 1.18 2004/05/11 12:28:25 starvik
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* Merge of Linux 2.6.6
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*
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* Revision 1.17 2003/09/11 07:29:49 starvik
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* Merge of Linux 2.6.0-test5
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*
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* Revision 1.16 2003/07/04 08:27:41 starvik
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* Merge of Linux 2.5.74
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*
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* Revision 1.15 2003/04/09 07:32:55 starvik
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* resume should return task_struct, not thread_info
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*
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* Revision 1.14 2003/04/09 05:20:44 starvik
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* Merge of Linux 2.5.67
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*
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* Revision 1.13 2002/12/11 15:42:02 starvik
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* Extracted v10 (ETRAX 100LX) specific stuff from arch/cris/kernel/*.c
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*
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* Revision 1.12 2002/12/10 09:00:10 starvik
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* Merge of Linux 2.5.51
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*
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* Revision 1.11 2002/12/05 07:53:10 starvik
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* Corrected constants used with btstq
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*
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* Revision 1.10 2002/11/27 08:45:10 starvik
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* pid is in task_struct, not thread_info
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*
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* Revision 1.9 2002/11/26 09:52:05 starvik
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* Added preemptive kernel scheduling (if CONFIG_PREEMPT)
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*
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* Revision 1.8 2002/11/20 11:56:11 starvik
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* Merge of Linux 2.5.48
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*
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* Revision 1.7 2002/11/18 13:02:42 starvik
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* Added fourth parameter to do_notify_resume
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* Minor cleanup
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*
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* Revision 1.6 2002/11/11 10:37:50 starvik
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* Use new asm-offset defines
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* Modified for new location of current->work etc
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* Removed SYMBOL_NAME from syscalls
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* Added some new syscalls
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*
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* Revision 1.5 2002/11/05 06:45:11 starvik
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* Merge of Linux 2.5.45
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*
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* Revision 1.4 2002/02/05 15:41:31 bjornw
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* Rewritten to conform better to current 2.5 code (similar to arch/i386)
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*
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* Revision 1.3 2002/01/21 15:22:20 bjornw
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* NICE_DOGGY fix from 2.4 arch/cris
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*
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* Revision 1.37 2001/12/07 17:03:55 bjornw
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* Call a c-hook called watchdog_bite_hook instead of show_registers directly
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*
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* Revision 1.36 2001/11/22 13:36:36 bjornw
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* * In ret_from_intr, check regs->dccr for usermode reentrance instead of
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* DCCR explicitly (because the latter might not reflect current reality)
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* * In mmu_bus_fault, set $r9 _after_ calling the C-code instead of before
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* since $r9 is call-clobbered and is potentially needed afterwards
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*
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* Revision 1.35 2001/10/30 17:10:15 bjornw
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* Add some syscalls
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*
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* Revision 1.34 2001/10/01 14:45:03 bjornw
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* Removed underscores and added register prefixes
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*
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* Revision 1.33 2001/08/21 13:48:01 jonashg
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* Added fix by HP to avoid oops when doing a hard_reset_now.
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*
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* Revision 1.32 2001/08/14 04:32:02 hp
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* In _resume, add comment why R9 is saved; don't sound like it's call-saved.
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*
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* Revision 1.31 2001/07/25 16:07:42 bjornw
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* softirq_active/mask -> softirq_pending only
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*
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* Revision 1.30 2001/07/05 01:03:32 hp
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* - include asm/errno.h to get ENOSYS.
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* - Use ENOSYS, not local constant LENOSYS; tweak comments.
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* - Explain why .include, not #include is used.
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* - Make oops-register-dump if watchdog bits and it's not expected.
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* - Don't jsr, use jump _hard_reset_now, and skip spurious nop.
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* - Use correct section attribute for section .rodata.
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* - Adjust sys_ni_syscall fill number.
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*
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* Revision 1.29 2001/06/25 14:07:00 hp
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* Fix review comment.
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* * head.S: Use IO_STATE, IO_FIELD and IO_MASK constructs instead of
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* magic numbers. Add comment that -traditional must not be used.
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* * entry.S (SYMBOL_NAME): Change redefinition to use ## concatenation.
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* Correct and update comment.
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* * Makefile (.S.o): Don't use -traditional. Add comment why the
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* toplevel rule can't be used (now that there's a reason).
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*
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* Revision 1.28 2001/06/21 02:00:40 hp
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* * entry.S: Include asm/unistd.h.
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* (_sys_call_table): Use section .rodata, not .data.
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* (_kernel_thread): Move from...
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* * process.c: ... here.
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* * entryoffsets.c (VAL): Break out from...
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* (OF): Use VAL.
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* (LCLONE_VM): New asmified value from CLONE_VM.
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*
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* Revision 1.27 2001/05/29 11:25:27 markusl
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* In case of "spurious_interrupt", do hard_reset instead of hanging system in a loop...
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*
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* Revision 1.26 2001/05/15 15:46:03 bjornw
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* Include config.h now that we use some CONFIG_ options
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*
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* Revision 1.25 2001/05/15 05:38:47 hp
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* Tweaked code in _ret_from_sys_call
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*
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* Revision 1.24 2001/05/15 05:27:49 hp
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* Save r9 in r1 over function call rather than on stack.
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*
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* Revision 1.23 2001/05/15 05:10:00 hp
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* Generate entry.S structure offsets from C
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*
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* Revision 1.22 2001/04/17 13:58:39 orjanf
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* * Renamed CONFIG_KGDB to CONFIG_ETRAX_KGDB.
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*
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* Revision 1.21 2001/04/17 11:33:29 orjanf
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* Updated according to review:
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* * Included asm/sv_addr_ag.h to get macro for internal register.
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* * Corrected comment regarding system call argument passing.
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* * Removed comment about instruction being in a delay slot.
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* * Added comment about SYMBOL_NAME macro.
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*
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* Revision 1.20 2001/04/12 08:51:07 hp
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* - Add entry for sys_fcntl64. In fact copy last piece from i386 including ...
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* - .rept to fill table to safe state with sys_ni_syscall.
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*
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* Revision 1.19 2001/04/04 09:43:32 orjanf
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* * Moved do_sigtrap from traps.c to entry.S.
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* * LTASK_PID need not be global anymore.
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*
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* Revision 1.18 2001/03/26 09:25:02 markusl
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* Updated after review, should now handle USB interrupts correctly.
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*
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* Revision 1.17 2001/03/21 16:12:55 bjornw
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* * Always make room for the cpu status record in the frame, in order to
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* use the same framelength and layout for both mmu busfaults and normal
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* irqs. No need to check for the explicit CRIS_FRAME_FIXUP type anymore.
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* * Fixed bug with using addq for popping the stack in the epilogue - it
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* destroyed the flag register. Use instructions that don't affect the
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* flag register instead.
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* * Removed write to R_PORT_PA_DATA during spurious_interrupt
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*
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* Revision 1.16 2001/03/20 19:43:02 bjornw
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* * Get rid of esp0 setting
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* * Give a 7th argument to a systemcall - the stackframe
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*
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* Revision 1.15 2001/03/05 13:14:30 bjornw
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* Spelling fix
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*
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* Revision 1.14 2001/02/23 08:36:36 perf
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* New ABI; syscallnr=r9, arg5=mof, arg6=srp.
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* Corrected tracesys call check.
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*
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* Revision 1.13 2001/02/15 08:40:55 perf
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* H-P by way of perf;
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* - (_system_call): Don't read system call function address into r1.
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* - (RBFExit): There is no such thing as a null pop. Adjust sp by addq.
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* - (_system_call): Don't use r10 and don't save and restore it.
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* - (THREAD_ESP0): New constant.
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* - (_system_call): Inline set_esp0.
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*
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* Revision 1.12 2001/01/31 17:56:25 orjanf
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* Added definition of LTASK_PID and made it global.
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*
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* Revision 1.11 2001/01/10 21:13:29 bjornw
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* SYMBOL_NAME is defined incorrectly for the compiler options we currently use
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*
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* Revision 1.10 2000/12/18 23:47:56 bjornw
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* * Added syscall trace support (ptrace), completely untested of course
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* * Removed redundant check for NULL entries in syscall_table
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*
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* Revision 1.9 2000/11/21 16:40:51 bjornw
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* * New frame type used when an SBFS frame needs to be popped without
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* actually restarting the instruction
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* * Enable interrupts in signal_return (they did so in x86, I hope it's a good
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* idea)
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*
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* Revision 1.8 2000/11/17 16:53:35 bjornw
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* Added detection of frame-type in Rexit, so that mmu_bus_fault can
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* use ret_from_intr in the return-path to check for signals (like SEGV)
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* and other foul things that might have occurred during the fault.
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*
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* Revision 1.7 2000/10/06 15:04:28 bjornw
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* Include mof in register savings
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*
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* Revision 1.6 2000/09/12 16:02:44 bjornw
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* Linux-2.4.0-test7 derived updates
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*
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* Revision 1.5 2000/08/17 15:35:15 bjornw
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* 2.4.0-test6 changed local_irq_count and friends API
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*
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* Revision 1.4 2000/08/02 13:59:30 bjornw
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* Removed olduname and uname from the syscall list
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*
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* Revision 1.3 2000/07/31 13:32:58 bjornw
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* * Export ret_from_intr
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* * _resume updated (prev/last tjohejsan)
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* * timer_interrupt obsolete
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* * SIGSEGV detection in mmu_bus_fault temporarily disabled
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*
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*
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*/
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/*
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