/* * 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 #include #include #include #include #include #include #include #include #include #include #include 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; } } }