1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License, Version 1.0 only 6 * (the "License"). You may not use this file except in compliance 7 * with the License. 8 * 9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10 * or http://www.opensolaris.org/os/licensing. 11 * See the License for the specific language governing permissions 12 * and limitations under the License. 13 * 14 * When distributing Covered Code, include this CDDL HEADER in each 15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16 * If applicable, add the following below this CDDL HEADER, with the 17 * fields enclosed by brackets "[]" replaced with your own identifying 18 * information: Portions Copyright [yyyy] [name of copyright owner] 19 * 20 * CDDL HEADER END 21 */ 22 /* 23 * Copyright 2004 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27 #pragma ident "%Z%%M% %I% %E% SMI" 28 29 /* 30 * CPU-specific target implementation 31 * 32 * Each CPU provides a set of debugging facilities. We have per-CPU "modules", 33 * each of which exposes a kmt_cpu_t. When initialized, these modules will 34 * install dcmds, walkers, and the like in order to allow the user to take 35 * advantage of features specific to the CPU being used. 36 */ 37 38 #include <kmdb/kmdb_kdi.h> 39 #include <kmdb/kvm_cpu_impl.h> 40 #include <mdb/mdb_target.h> 41 #include <mdb/mdb_err.h> 42 #include <mdb/mdb.h> 43 44 static kmt_cpu_ctor_f *const kmt_cpu_ctors[] = { 45 #if defined(__i386) || defined(__amd64) 46 kmt_cpu_amd_create, 47 kmt_cpu_p4_create, 48 #if defined(__i386) 49 kmt_cpu_p6_create, 50 #endif /* __i386 */ 51 #endif /* __i386 || __amd64 */ 52 NULL 53 }; 54 55 kmt_cpu_t * 56 kmt_cpu_create(mdb_tgt_t *t) 57 { 58 kmt_cpu_t *cpu; 59 int retry = 0; 60 int i; 61 62 for (i = 0; kmt_cpu_ctors[i] != NULL; i++) { 63 if ((cpu = kmt_cpu_ctors[i](t)) != NULL) 64 return (cpu); 65 else if (errno == EAGAIN) 66 retry = 1; 67 } 68 69 if (retry) 70 (void) set_errno(EAGAIN); 71 72 return (NULL); 73 } 74 75 void 76 kmt_cpu_destroy(kmt_cpu_t *cpu) 77 { 78 if (cpu != NULL) 79 cpu->kmt_cpu_ops->kco_destroy(cpu); 80 } 81 82 int 83 kmt_cpu_step_branch(mdb_tgt_t *t, kmt_cpu_t *cpu) 84 { 85 if (cpu == NULL || cpu->kmt_cpu_ops->kco_step_branch == NULL) 86 return (set_errno(EMDB_TGTHWNOTSUP)); 87 88 return (cpu->kmt_cpu_ops->kco_step_branch(cpu, t)); 89 } 90 91 const char * 92 kmt_cpu_name(kmt_cpu_t *cpu) 93 { 94 if (cpu == NULL) 95 return ("none"); 96 else 97 return (cpu->kmt_cpu_ops->kco_name(cpu)); 98 } 99