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