sys/ia64/include/kdb.h

   1 /*-
   2  * Copyright (c) 2004 Marcel Moolenaar
   3  * All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  *
   9  * 1. Redistributions of source code must retain the above copyright
  10  *    notice, this list of conditions and the following disclaimer.
  11  * 2. Redistributions in binary form must reproduce the above copyright
  12  *    notice, this list of conditions and the following disclaimer in the
  13  *    documentation and/or other materials provided with the distribution.
  14  *
  15  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  16  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  17  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  18  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  19  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  20  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  21  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  22  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  23  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  24  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  25  *
  26  * $FreeBSD$
  27  */
  28
  29 #ifndef _MACHINE_KDB_H_
  30 #define _MACHINE_KDB_H_
  31
  32 #include <machine/cpufunc.h>
  33 #include <machine/frame.h>
  34 #include <machine/ia64_cpu.h>
  35
  36 #define KDB_STOPPEDPCB(pc)      (&(pc)->pc_pcb)
  37
  38 static __inline void
  39 kdb_cpu_clear_singlestep(void)
  40 {
  41         kdb_frame->tf_special.psr &= ~IA64_PSR_SS;
  42 }
  43
  44 static __inline void
  45 kdb_cpu_set_singlestep(void)
  46 {
  47         kdb_frame->tf_special.psr |= IA64_PSR_SS;
  48 }
  49
  50 static __inline void
  51 kdb_cpu_sync_icache(unsigned char *addr, size_t size)
  52 {
  53         vm_offset_t cacheline;
  54
  55         cacheline = (uintptr_t)addr & ~31;
  56         size += (uintptr_t)addr - cacheline;
  57         size = (size + 31) & ~31;
  58         while (size > 0) {
  59                 __asm __volatile("fc %0;; sync.i;; srlz.i;;" :: "r"(cacheline));
  60                 cacheline += 32;
  61                 size -= 32;
  62         }
  63 }
  64
  65 static __inline void
  66 kdb_cpu_trap(int vector, int _)
  67 {
  68         __asm __volatile("flushrs;;");
  69
  70         if (vector == IA64_VEC_BREAK &&
  71             kdb_frame->tf_special.ifa == IA64_FIXED_BREAK)
  72                 kdb_frame->tf_special.psr += IA64_PSR_RI_1;
  73 }
  74
  75 #endif /* _MACHINE_KDB_H_ */