/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License, Version 1.0 only
* (the "License"). You may not use this file except in compliance
* with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 2006 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#pragma ident "%Z%%M% %I% %E% SMI"
/*
* SPARC-specific portions of the DPI
*/
#include <sys/types.h>
#include <sys/mmu.h>
#include <sys/trap.h>
#include <sys/machtrap.h>
#include <kmdb/kmdb_dpi_impl.h>
#include <kmdb/kmdb_asmutil.h>
#include <kmdb/kmdb_promif.h>
#include <kmdb/kmdb_fault.h>
#include <mdb/mdb_err.h>
#include <mdb/mdb_debug.h>
#include <mdb/mdb_kreg.h>
#include <mdb/mdb.h>
void
kmdb_dpi_handle_fault(kreg_t tt, kreg_t tpc, kreg_t tnpc, kreg_t sp, int cpuid)
{
mdb_dprintf(MDB_DBG_DPI, "\ndpi_handle_fault: tt 0x%01lx, tpc 0x%0?p, "
"tnpc 0x%0?p, sp 0x%0?p, fault_pcb 0x%0?p\n", tt, tpc, tnpc, sp,
kmdb_dpi_fault_pcb);
switch (tt) {
case FAST_PROT_TT:
errno = EACCES;
break;
case T_DATA_ERROR:
errno = EIO;
break;
#ifdef sun4v
case T_DATA_MMU_MISS:
#endif /* sun4v */
case FAST_DMMU_MISS_TT:
default:
errno = EMDB_NOMAP;
}
if (kmdb_dpi_fault_pcb != NULL) {
longjmp(*kmdb_dpi_fault_pcb, 1);
/*NOTREACHED*/
}
/* Debugger fault */
kmdb_fault(tt, tpc, sp, cpuid);
}
int
kmdb_dpi_get_register(const char *regname, kreg_t *kregp)
{
return (mdb.m_dpi->dpo_get_register(regname, kregp));
}
int
kmdb_dpi_set_register(const char *regname, kreg_t kreg)
{
return (mdb.m_dpi->dpo_set_register(regname, kreg));
}
int
kmdb_dpi_get_rwin(int cpuid, int win, struct rwindow *rwin)
{
return (mdb.m_dpi->dpo_get_rwin(cpuid, win, rwin));
}
int
kmdb_dpi_get_nwin(int cpuid)
{
return (mdb.m_dpi->dpo_get_nwin(cpuid));
}
void
kmdb_dpi_kernpanic(int cpuid)
{
mdb.m_dpi->dpo_kernpanic(cpuid);
}
/*
* Continue/resume handling. If the target calls kmdb_dpi_resume(), it
* expects that the world will be resumed, and that the call will return
* when the world has stopped again.
*
* For support, we have resume_return(), which is called from main() when
* the continuation has completed (when the world has stopped again).
* set_resume_exit() tells where to jump to actually restart the world.
*
* CAUTION: This routine may be called *after* mdb_destroy.
*/
void
kmdb_dpi_resume_common(int cmd)
{
kreg_t pc, tt;
ASSERT(kmdb_dpi_resume_requested == 0);
if (setjmp(kmdb_dpi_resume_pcb) == 0) {
(void) kmdb_dpi_get_register("pc", &pc);
mdb_dprintf(MDB_DBG_PROC, "Resume requested, pc is %p\n",
(void *)pc);
if (cmd != KMDB_DPI_CMD_RESUME_UNLOAD)
kmdb_dpi_resume_requested = 1;
longjmp(kmdb_dpi_entry_pcb, cmd);
/*NOTREACHED*/
} else {
(void) kmdb_dpi_get_register("pc", &pc);
(void) kmdb_dpi_get_register("tt", &tt);
mdb_dprintf(MDB_DBG_PROC, "Back from resume, pc: %p, tt: %lx\n",
(void *)pc, tt);
kmdb_dpi_resume_requested = 0;
switch (tt) {
case T_PA_WATCHPOINT:
kmdb_dpi_set_state(DPI_STATE_FAULTED,
DPI_STATE_WHY_P_WAPT);
break;
case T_VA_WATCHPOINT:
kmdb_dpi_set_state(DPI_STATE_FAULTED,
DPI_STATE_WHY_V_WAPT);
break;
case ST_KMDB_BREAKPOINT|T_SOFTWARE_TRAP:
case ST_MON_BREAKPOINT|T_SOFTWARE_TRAP: /* Shouldn't happen */
kmdb_dpi_set_state(DPI_STATE_FAULTED,
DPI_STATE_WHY_BKPT);
break;
case ST_KMDB_TRAP|T_SOFTWARE_TRAP:
kmdb_dpi_set_state(DPI_STATE_STOPPED, 0);
break;
default:
kmdb_dpi_set_state(DPI_STATE_FAULTED,
DPI_STATE_WHY_TRAP);
break;
}
}
}