The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/powerpc/powerpc/db_interface.c

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    1 /*      $FreeBSD: releng/10.3/sys/powerpc/powerpc/db_interface.c 209975 2010-07-13 05:32:19Z nwhitehorn $ */
    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 == 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                 while (cnt-- > 0)
   71                         *dst++ = *data++;
   72                 kdb_cpu_sync_icache((void *)addr, size);
   73         }
   74         (void)kdb_jmpbuf(prev_jb);
   75         return (ret);
   76 }
   77 
   78 void
   79 db_show_mdpcpu(struct pcpu *pc)
   80 {
   81 
   82         db_printf("PPC: hwref   = %#zx\n", pc->pc_hwref);
   83         db_printf("PPC: ipimask = %#x\n", pc->pc_ipimask);
   84         db_printf("PPC: pir     = %#x\n", pc->pc_pir);
   85 }

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