db_interface.c

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    1 /*      $FreeBSD: releng/6.2/sys/powerpc/powerpc/db_interface.c 132688 2004-07-27 07:04:58Z grehan $ */
    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/linker_set.h>
   12 #include <sys/lock.h>
   13 #include <sys/pcpu.h>
   14 #include <sys/proc.h>
   15 #include <sys/smp.h>
   16 
   17 #include <machine/cpu.h>
   18 #include <machine/md_var.h>
   19 
   20 #include <vm/vm.h>
   21 #include <vm/pmap.h>
   22 
   23 #include <ddb/ddb.h>
   24 #include <ddb/db_sym.h>
   25 #include <ddb/db_command.h>
   26 #include <ddb/db_access.h>
   27 #include <ddb/db_output.h>
   28 
   29 #include <dev/ofw/openfirm.h>
   30 
   31 int
   32 db_read_bytes(vm_offset_t addr, size_t size, char *data)
   33 {
   34         jmp_buf jb;
   35         void *prev_jb;
   36         char *src;
   37         int ret;
   38 
   39         prev_jb = kdb_jmpbuf(jb);
   40         ret = setjmp(jb);
   41         if (ret == 0) {
   42                 src = (char *)addr;
   43 
   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         int ret;
   63 
   64         prev_jb = kdb_jmpbuf(jb);
   65         ret = setjmp(jb);
   66         if (ret == 0) {
   67                 dst = (char *)addr;
   68 
   69                 if (size == 4)
   70                         *((int *)dst) = *((int *)data);
   71                 else if (size == 2)
   72                         *((short *)dst) = *((short *)data);
   73                 else
   74                         while (size-- > 0)
   75                                 *dst++ = *data++;
   76         }
   77         __syncicache((void *)addr, size);
   78 
   79         (void)kdb_jmpbuf(prev_jb);
   80         return (ret);
   81 }
   82 
   83 void
   84 db_show_mdpcpu(struct pcpu *pc)
   85 {
   86 }
   87 
   88 /*
   89  * PowerPC-specific ddb commands:
   90  */
   91 DB_COMMAND(reboot, db_reboot)
   92 {
   93         cpu_reset();
   94 }
   95 
   96 DB_COMMAND(halt, db_halt)
   97 {
   98         cpu_halt();
   99 }

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

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