/*      $NetBSD: db_interface.c,v 1.20 2002/05/13 20:30:09 matt Exp $ */
/*      $OpenBSD: db_interface.c,v 1.2 1996/12/28 06:21:50 rahnds Exp $ */

#include <sys/param.h>
#include <sys/systm.h>
#include <sys/cons.h>
#include <sys/kdb.h>
#include <sys/ktr.h>
#include <sys/lock.h>
#include <sys/pcpu.h>
#include <sys/proc.h>
#include <sys/smp.h>

#include <machine/kdb.h>
#include <machine/md_var.h>

#include <vm/vm.h>
#include <vm/pmap.h>

#include <ddb/ddb.h>
#include <ddb/db_sym.h>
#include <ddb/db_command.h>
#include <ddb/db_access.h>
#include <ddb/db_output.h>

#include <dev/ofw/openfirm.h>

int
db_read_bytes(vm_offset_t addr, size_t size, char *data)
{
        jmp_buf jb;
        void *prev_jb;
        char *src;
        int ret;

        prev_jb = kdb_jmpbuf(jb);
        ret = setjmp(jb);
        if (ret == 0) {
                src = (char *)addr;

                if (size == 8)
                        *((uint64_t*)data) = *((uint64_t*)src);
                if (size == 4)
                        *((int *)data) = *((int *)src);
                else if (size == 2)
                        *((short *)data) = *((short *)src);
                else
                        while (size-- > 0)
                                *data++ = *src++;
        }
        (void)kdb_jmpbuf(prev_jb);
        return (ret);
}

int
db_write_bytes(vm_offset_t addr, size_t size, char *data)
{
        jmp_buf jb;
        void *prev_jb;
        char *dst;
        size_t cnt;
        int ret;

        prev_jb = kdb_jmpbuf(jb);
        ret = setjmp(jb);
        if (ret == 0) {
                dst = (char *)addr;
                cnt = size;

                if (size == 8)
                        *((uint64_t*)dst) = *((uint64_t*)data);
                if (size == 4)
                        *((int*)dst) = *((int*)data);
                else
                if (size == 2)
                        *((short*)dst) = *((short*)data);
                else
                        while (cnt-- > 0)
                                *dst++ = *data++;
                kdb_cpu_sync_icache((void *)addr, size);
        }
        (void)kdb_jmpbuf(prev_jb);
        return (ret);
}

void
db_show_mdpcpu(struct pcpu *pc)
{

        db_printf("PPC: hwref   = %#zx\n", pc->pc_hwref);
        db_printf("PPC: ipimask = %#x\n", pc->pc_ipimask);
        db_printf("PPC: flags   = %#x\n", pc->pc_flags);
}