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 (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 /* 22 * Copyright 2007 Sun Microsystems, Inc. All rights reserved. 23 * Use is subject to license terms. 24 * 25 * Copyright 2018 Joyent, Inc. 26 */ 27 28 #ifndef _SYS_KDI_REGS_H 29 #define _SYS_KDI_REGS_H 30 31 #ifndef _ASM 32 #include <sys/types.h> 33 #include <sys/segments.h> 34 #include <sys/regset.h> 35 #include <sys/privregs.h> 36 #endif 37 38 #if defined(__amd64) 39 #include <amd64/sys/kdi_regs.h> 40 #elif defined(__i386) 41 #include <ia32/sys/kdi_regs.h> 42 #endif 43 44 #ifdef __cplusplus 45 extern "C" { 46 #endif 47 48 #define KDI_NCRUMBS 5 49 50 #define KDI_CPU_STATE_NONE 0 51 #define KDI_CPU_STATE_MASTER 1 52 #define KDI_CPU_STATE_SLAVE 2 53 54 #define KDIREG_DRCTL_WPALLEN_MASK 0x000000ff 55 #define KDIREG_DRSTAT_RESERVED 0xffff0ff0 56 #define KDIREG_DRCTL_RESERVED 0x00000700 57 58 #ifndef _ASM 59 60 /* 61 * We maintain a ring buffer of bread crumbs for debugging purposes. The 62 * current buffer pointer is advanced along the ring with each intercepted 63 * trap (debugger entry, invalid memory access, fault during step, etc). 64 */ 65 typedef struct kdi_crumb { 66 greg_t krm_cpu_state; /* This CPU's state at last entry */ 67 greg_t krm_pc; /* Instruction pointer at trap */ 68 greg_t krm_sp; /* Stack pointer at trap */ 69 greg_t krm_trapno; /* The last trap number */ 70 greg_t krm_flag; /* KAIF_CRUMB_F_* */ 71 } kdi_crumb_t; 72 73 #define KDI_MAXWPIDX 3 74 75 /* 76 * Storage for %dr0-3, %dr6, and %dr7. 77 */ 78 typedef struct kdi_drreg { 79 greg_t dr_ctl; 80 greg_t dr_stat; 81 greg_t dr_addr[KDI_MAXWPIDX + 1]; 82 } kdi_drreg_t; 83 84 /* 85 * Data structure used to hold all of the state for a given CPU. 86 */ 87 typedef struct kdi_cpusave { 88 greg_t *krs_gregs; /* saved registers */ 89 90 kdi_drreg_t krs_dr; /* saved debug registers */ 91 92 user_desc_t *krs_gdt; /* GDT address */ 93 gate_desc_t *krs_idt; /* IDT address */ 94 95 greg_t krs_cr0; /* saved %cr0 */ 96 97 uint_t krs_cpu_state; /* KDI_CPU_STATE_* mstr/slv */ 98 uint_t krs_cpu_flushed; /* Have caches been flushed? */ 99 uint_t krs_cpu_id; /* this CPU's ID */ 100 101 /* Bread crumb ring buffer */ 102 ulong_t krs_curcrumbidx; /* Current krs_crumbs idx */ 103 kdi_crumb_t *krs_curcrumb; /* Pointer to current crumb */ 104 kdi_crumb_t krs_crumbs[KDI_NCRUMBS]; /* Crumbs */ 105 } kdi_cpusave_t; 106 107 #endif /* !_ASM */ 108 109 #ifdef __cplusplus 110 } 111 #endif 112 113 #endif /* _SYS_KDI_REGS_H */ 114