sys/powerpc/powerpc/db_interface.c

   1 /*      $FreeBSD$ */
   2 /*      $NetBSD: db_interface.c,v 1.20 2002/05/13 20:30:09 matt Exp $ */
   3 /*      $OpenBSD: db_interface.c,v 1.2 1996/12/28 06:21:50 rahnds Exp $ */
   4
   5 #include <sys/param.h>
   6 #include <sys/systm.h>
   7 #include <sys/cons.h>
   8 #include <sys/kdb.h>
   9 #include <sys/ktr.h>
  10 #include <sys/lock.h>
  11 #include <sys/pcpu.h>
  12 #include <sys/proc.h>
  13 #include <sys/smp.h>
  14
  15 #include <machine/kdb.h>
  16 #include <machine/md_var.h>
  17
  18 #include <vm/vm.h>
  19 #include <vm/pmap.h>
  20
  21 #include <ddb/ddb.h>
  22 #include <ddb/db_sym.h>
  23 #include <ddb/db_command.h>
  24 #include <ddb/db_access.h>
  25 #include <ddb/db_output.h>
  26
  27 #include <dev/ofw/openfirm.h>
  28
  29 int
  30 db_read_bytes(vm_offset_t addr, size_t size, char *data)
  31 {
  32         jmp_buf jb;
  33         void *prev_jb;
  34         char *src;
  35         int ret;
  36
  37         prev_jb = kdb_jmpbuf(jb);
  38         ret = setjmp(jb);
  39         if (ret == 0) {
  40                 src = (char *)addr;
  41
  42                 if (size == 8)
  43                         *((uint64_t*)data) = *((uint64_t*)src);
  44                 if (size == 4)
  45                         *((int *)data) = *((int *)src);
  46                 else if (size == 2)
  47                         *((short *)data) = *((short *)src);
  48                 else
  49                         while (size-- > 0)
  50                                 *data++ = *src++;
  51         }
  52         (void)kdb_jmpbuf(prev_jb);
  53         return (ret);
  54 }
  55
  56 int
  57 db_write_bytes(vm_offset_t addr, size_t size, char *data)
  58 {
  59         jmp_buf jb;
  60         void *prev_jb;
  61         char *dst;
  62         size_t cnt;
  63         int ret;
  64
  65         prev_jb = kdb_jmpbuf(jb);
  66         ret = setjmp(jb);
  67         if (ret == 0) {
  68                 dst = (char *)addr;
  69                 cnt = size;
  70
  71                 if (size == 8)
  72                         *((uint64_t*)dst) = *((uint64_t*)data);
  73                 if (size == 4)
  74                         *((int*)dst) = *((int*)data);
  75                 else
  76                 if (size == 2)
  77                         *((short*)dst) = *((short*)data);
  78                 else
  79                         while (cnt-- > 0)
  80                                 *dst++ = *data++;
  81                 kdb_cpu_sync_icache((void *)addr, size);
  82         }
  83         (void)kdb_jmpbuf(prev_jb);
  84         return (ret);
  85 }
  86
  87 void
  88 db_show_mdpcpu(struct pcpu *pc)
  89 {
  90
  91         db_printf("PPC: hwref   = %#zx\n", pc->pc_hwref);
  92         db_printf("PPC: ipimask = %#x\n", pc->pc_ipimask);
  93         db_printf("PPC: flags   = %#x\n", pc->pc_flags);
  94 }