-/* $Id: entry.S,v 1.28 2005/06/20 05:06:30 starvik Exp $
- *
+/*
* linux/arch/cris/entry.S
*
* Copyright (C) 2000, 2001, 2002 Axis Communications AB
*
* Authors: Bjorn Wesen (bjornw@axis.com)
- *
- * $Log: entry.S,v $
- * Revision 1.28 2005/06/20 05:06:30 starvik
- * Remove unnecessary diff to kernel.org tree
- *
- * Revision 1.27 2005/03/04 08:16:16 starvik
- * Merge of Linux 2.6.11.
- *
- * Revision 1.26 2005/01/11 13:49:47 starvik
- * Added NMI handler.
- *
- * Revision 1.25 2004/12/27 11:18:32 starvik
- * Merge of Linux 2.6.10 (not functional yet).
- *
- * Revision 1.24 2004/12/22 10:41:23 starvik
- * Updates to make v10 compile with the latest SMP aware generic code (even
- * though v10 will never have SMP).
- *
- * Revision 1.23 2004/10/19 13:07:37 starvik
- * Merge of Linux 2.6.9
- *
- * Revision 1.22 2004/06/21 10:29:55 starvik
- * Merge of Linux 2.6.7
- *
- * Revision 1.21 2004/06/09 05:30:27 starvik
- * Clean up multiple interrupt handling.
- * Prevent interrupts from interrupting each other.
- * Handle all active interrupts.
- *
- * Revision 1.20 2004/06/08 08:55:32 starvik
- * Removed unused code
- *
- * Revision 1.19 2004/06/04 11:56:15 starvik
- * Implemented page table lookup for refills in assembler for improved performance.
- *
- * Revision 1.18 2004/05/11 12:28:25 starvik
- * Merge of Linux 2.6.6
- *
- * Revision 1.17 2003/09/11 07:29:49 starvik
- * Merge of Linux 2.6.0-test5
- *
- * Revision 1.16 2003/07/04 08:27:41 starvik
- * Merge of Linux 2.5.74
- *
- * Revision 1.15 2003/04/09 07:32:55 starvik
- * resume should return task_struct, not thread_info
- *
- * Revision 1.14 2003/04/09 05:20:44 starvik
- * Merge of Linux 2.5.67
- *
- * Revision 1.13 2002/12/11 15:42:02 starvik
- * Extracted v10 (ETRAX 100LX) specific stuff from arch/cris/kernel/*.c
- *
- * Revision 1.12 2002/12/10 09:00:10 starvik
- * Merge of Linux 2.5.51
- *
- * Revision 1.11 2002/12/05 07:53:10 starvik
- * Corrected constants used with btstq
- *
- * Revision 1.10 2002/11/27 08:45:10 starvik
- * pid is in task_struct, not thread_info
- *
- * Revision 1.9 2002/11/26 09:52:05 starvik
- * Added preemptive kernel scheduling (if CONFIG_PREEMPT)
- *
- * Revision 1.8 2002/11/20 11:56:11 starvik
- * Merge of Linux 2.5.48
- *
- * Revision 1.7 2002/11/18 13:02:42 starvik
- * Added fourth parameter to do_notify_resume
- * Minor cleanup
- *
- * Revision 1.6 2002/11/11 10:37:50 starvik
- * Use new asm-offset defines
- * Modified for new location of current->work etc
- * Removed SYMBOL_NAME from syscalls
- * Added some new syscalls
- *
- * Revision 1.5 2002/11/05 06:45:11 starvik
- * Merge of Linux 2.5.45
- *
- * Revision 1.4 2002/02/05 15:41:31 bjornw
- * Rewritten to conform better to current 2.5 code (similar to arch/i386)
- *
- * Revision 1.3 2002/01/21 15:22:20 bjornw
- * NICE_DOGGY fix from 2.4 arch/cris
- *
- * Revision 1.37 2001/12/07 17:03:55 bjornw
- * Call a c-hook called watchdog_bite_hook instead of show_registers directly
- *
- * Revision 1.36 2001/11/22 13:36:36 bjornw
- * * In ret_from_intr, check regs->dccr for usermode reentrance instead of
- * DCCR explicitly (because the latter might not reflect current reality)
- * * In mmu_bus_fault, set $r9 _after_ calling the C-code instead of before
- * since $r9 is call-clobbered and is potentially needed afterwards
- *
- * Revision 1.35 2001/10/30 17:10:15 bjornw
- * Add some syscalls
- *
- * Revision 1.34 2001/10/01 14:45:03 bjornw
- * Removed underscores and added register prefixes
- *
- * Revision 1.33 2001/08/21 13:48:01 jonashg
- * Added fix by HP to avoid oops when doing a hard_reset_now.
- *
- * Revision 1.32 2001/08/14 04:32:02 hp
- * In _resume, add comment why R9 is saved; don't sound like it's call-saved.
- *
- * Revision 1.31 2001/07/25 16:07:42 bjornw
- * softirq_active/mask -> softirq_pending only
- *
- * Revision 1.30 2001/07/05 01:03:32 hp
- * - include asm/errno.h to get ENOSYS.
- * - Use ENOSYS, not local constant LENOSYS; tweak comments.
- * - Explain why .include, not #include is used.
- * - Make oops-register-dump if watchdog bits and it's not expected.
- * - Don't jsr, use jump _hard_reset_now, and skip spurious nop.
- * - Use correct section attribute for section .rodata.
- * - Adjust sys_ni_syscall fill number.
- *
- * Revision 1.29 2001/06/25 14:07:00 hp
- * Fix review comment.
- * * head.S: Use IO_STATE, IO_FIELD and IO_MASK constructs instead of
- * magic numbers. Add comment that -traditional must not be used.
- * * entry.S (SYMBOL_NAME): Change redefinition to use ## concatenation.
- * Correct and update comment.
- * * Makefile (.S.o): Don't use -traditional. Add comment why the
- * toplevel rule can't be used (now that there's a reason).
- *
- * Revision 1.28 2001/06/21 02:00:40 hp
- * * entry.S: Include asm/unistd.h.
- * (_sys_call_table): Use section .rodata, not .data.
- * (_kernel_thread): Move from...
- * * process.c: ... here.
- * * entryoffsets.c (VAL): Break out from...
- * (OF): Use VAL.
- * (LCLONE_VM): New asmified value from CLONE_VM.
- *
- * Revision 1.27 2001/05/29 11:25:27 markusl
- * In case of "spurious_interrupt", do hard_reset instead of hanging system in a loop...
- *
- * Revision 1.26 2001/05/15 15:46:03 bjornw
- * Include config.h now that we use some CONFIG_ options
- *
- * Revision 1.25 2001/05/15 05:38:47 hp
- * Tweaked code in _ret_from_sys_call
- *
- * Revision 1.24 2001/05/15 05:27:49 hp
- * Save r9 in r1 over function call rather than on stack.
- *
- * Revision 1.23 2001/05/15 05:10:00 hp
- * Generate entry.S structure offsets from C
- *
- * Revision 1.22 2001/04/17 13:58:39 orjanf
- * * Renamed CONFIG_KGDB to CONFIG_ETRAX_KGDB.
- *
- * Revision 1.21 2001/04/17 11:33:29 orjanf
- * Updated according to review:
- * * Included asm/sv_addr_ag.h to get macro for internal register.
- * * Corrected comment regarding system call argument passing.
- * * Removed comment about instruction being in a delay slot.
- * * Added comment about SYMBOL_NAME macro.
- *
- * Revision 1.20 2001/04/12 08:51:07 hp
- * - Add entry for sys_fcntl64. In fact copy last piece from i386 including ...
- * - .rept to fill table to safe state with sys_ni_syscall.
- *
- * Revision 1.19 2001/04/04 09:43:32 orjanf
- * * Moved do_sigtrap from traps.c to entry.S.
- * * LTASK_PID need not be global anymore.
- *
- * Revision 1.18 2001/03/26 09:25:02 markusl
- * Updated after review, should now handle USB interrupts correctly.
- *
- * Revision 1.17 2001/03/21 16:12:55 bjornw
- * * Always make room for the cpu status record in the frame, in order to
- * use the same framelength and layout for both mmu busfaults and normal
- * irqs. No need to check for the explicit CRIS_FRAME_FIXUP type anymore.
- * * Fixed bug with using addq for popping the stack in the epilogue - it
- * destroyed the flag register. Use instructions that don't affect the
- * flag register instead.
- * * Removed write to R_PORT_PA_DATA during spurious_interrupt
- *
- * Revision 1.16 2001/03/20 19:43:02 bjornw
- * * Get rid of esp0 setting
- * * Give a 7th argument to a systemcall - the stackframe
- *
- * Revision 1.15 2001/03/05 13:14:30 bjornw
- * Spelling fix
- *
- * Revision 1.14 2001/02/23 08:36:36 perf
- * New ABI; syscallnr=r9, arg5=mof, arg6=srp.
- * Corrected tracesys call check.
- *
- * Revision 1.13 2001/02/15 08:40:55 perf
- * H-P by way of perf;
- * - (_system_call): Don't read system call function address into r1.
- * - (RBFExit): There is no such thing as a null pop. Adjust sp by addq.
- * - (_system_call): Don't use r10 and don't save and restore it.
- * - (THREAD_ESP0): New constant.
- * - (_system_call): Inline set_esp0.
- *
- * Revision 1.12 2001/01/31 17:56:25 orjanf
- * Added definition of LTASK_PID and made it global.
- *
- * Revision 1.11 2001/01/10 21:13:29 bjornw
- * SYMBOL_NAME is defined incorrectly for the compiler options we currently use
- *
- * Revision 1.10 2000/12/18 23:47:56 bjornw
- * * Added syscall trace support (ptrace), completely untested of course
- * * Removed redundant check for NULL entries in syscall_table
- *
- * Revision 1.9 2000/11/21 16:40:51 bjornw
- * * New frame type used when an SBFS frame needs to be popped without
- * actually restarting the instruction
- * * Enable interrupts in signal_return (they did so in x86, I hope it's a good
- * idea)
- *
- * Revision 1.8 2000/11/17 16:53:35 bjornw
- * Added detection of frame-type in Rexit, so that mmu_bus_fault can
- * use ret_from_intr in the return-path to check for signals (like SEGV)
- * and other foul things that might have occurred during the fault.
- *
- * Revision 1.7 2000/10/06 15:04:28 bjornw
- * Include mof in register savings
- *
- * Revision 1.6 2000/09/12 16:02:44 bjornw
- * Linux-2.4.0-test7 derived updates
- *
- * Revision 1.5 2000/08/17 15:35:15 bjornw
- * 2.4.0-test6 changed local_irq_count and friends API
- *
- * Revision 1.4 2000/08/02 13:59:30 bjornw
- * Removed olduname and uname from the syscall list
- *
- * Revision 1.3 2000/07/31 13:32:58 bjornw
- * * Export ret_from_intr
- * * _resume updated (prev/last tjohejsan)
- * * timer_interrupt obsolete
- * * SIGSEGV detection in mmu_bus_fault temporarily disabled
- *
- *
*/
/*
projects / linux-2.6 / commitdiff