sys/powerpc/powerpc/db_interface.c

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