1*7c478bd9Sstevel@tonic-gate /* 2*7c478bd9Sstevel@tonic-gate * CDDL HEADER START 3*7c478bd9Sstevel@tonic-gate * 4*7c478bd9Sstevel@tonic-gate * The contents of this file are subject to the terms of the 5*7c478bd9Sstevel@tonic-gate * Common Development and Distribution License, Version 1.0 only 6*7c478bd9Sstevel@tonic-gate * (the "License"). You may not use this file except in compliance 7*7c478bd9Sstevel@tonic-gate * with the License. 8*7c478bd9Sstevel@tonic-gate * 9*7c478bd9Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10*7c478bd9Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing. 11*7c478bd9Sstevel@tonic-gate * See the License for the specific language governing permissions 12*7c478bd9Sstevel@tonic-gate * and limitations under the License. 13*7c478bd9Sstevel@tonic-gate * 14*7c478bd9Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each 15*7c478bd9Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16*7c478bd9Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the 17*7c478bd9Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying 18*7c478bd9Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner] 19*7c478bd9Sstevel@tonic-gate * 20*7c478bd9Sstevel@tonic-gate * CDDL HEADER END 21*7c478bd9Sstevel@tonic-gate */ 22*7c478bd9Sstevel@tonic-gate /* 23*7c478bd9Sstevel@tonic-gate * Copyright 2005 Sun Microsystems, Inc. All rights reserved. 24*7c478bd9Sstevel@tonic-gate * Use is subject to license terms. 25*7c478bd9Sstevel@tonic-gate */ 26*7c478bd9Sstevel@tonic-gate 27*7c478bd9Sstevel@tonic-gate #ifndef _IA32_SYS_PRIVREGS_H 28*7c478bd9Sstevel@tonic-gate #define _IA32_SYS_PRIVREGS_H 29*7c478bd9Sstevel@tonic-gate 30*7c478bd9Sstevel@tonic-gate #pragma ident "%Z%%M% %I% %E% SMI" 31*7c478bd9Sstevel@tonic-gate 32*7c478bd9Sstevel@tonic-gate #ifdef __cplusplus 33*7c478bd9Sstevel@tonic-gate extern "C" { 34*7c478bd9Sstevel@tonic-gate #endif 35*7c478bd9Sstevel@tonic-gate 36*7c478bd9Sstevel@tonic-gate /* 37*7c478bd9Sstevel@tonic-gate * This file describes the cpu's privileged register set, and 38*7c478bd9Sstevel@tonic-gate * how the machine state is saved on the stack when a trap occurs. 39*7c478bd9Sstevel@tonic-gate */ 40*7c478bd9Sstevel@tonic-gate 41*7c478bd9Sstevel@tonic-gate #if !defined(__i386) 42*7c478bd9Sstevel@tonic-gate #error "non-i386 code depends on i386 privileged header!" 43*7c478bd9Sstevel@tonic-gate #endif 44*7c478bd9Sstevel@tonic-gate 45*7c478bd9Sstevel@tonic-gate #ifndef _ASM 46*7c478bd9Sstevel@tonic-gate 47*7c478bd9Sstevel@tonic-gate /* 48*7c478bd9Sstevel@tonic-gate * This is NOT the structure to use for general purpose debugging; 49*7c478bd9Sstevel@tonic-gate * see /proc for that. This is NOT the structure to use to decode 50*7c478bd9Sstevel@tonic-gate * the ucontext or grovel about in a core file; see <sys/regset.h>. 51*7c478bd9Sstevel@tonic-gate */ 52*7c478bd9Sstevel@tonic-gate 53*7c478bd9Sstevel@tonic-gate struct regs { 54*7c478bd9Sstevel@tonic-gate /* 55*7c478bd9Sstevel@tonic-gate * Extra frame for mdb to follow through high level interrupts and 56*7c478bd9Sstevel@tonic-gate * system traps. Set them to 0 to terminate stacktrace. 57*7c478bd9Sstevel@tonic-gate */ 58*7c478bd9Sstevel@tonic-gate greg_t r_savfp; /* a copy of %ebp */ 59*7c478bd9Sstevel@tonic-gate greg_t r_savpc; /* a copy of %eip */ 60*7c478bd9Sstevel@tonic-gate 61*7c478bd9Sstevel@tonic-gate greg_t r_gs; 62*7c478bd9Sstevel@tonic-gate greg_t r_fs; 63*7c478bd9Sstevel@tonic-gate greg_t r_es; 64*7c478bd9Sstevel@tonic-gate greg_t r_ds; 65*7c478bd9Sstevel@tonic-gate greg_t r_edi; 66*7c478bd9Sstevel@tonic-gate greg_t r_esi; 67*7c478bd9Sstevel@tonic-gate greg_t r_ebp; 68*7c478bd9Sstevel@tonic-gate greg_t r_esp; 69*7c478bd9Sstevel@tonic-gate greg_t r_ebx; 70*7c478bd9Sstevel@tonic-gate greg_t r_edx; 71*7c478bd9Sstevel@tonic-gate greg_t r_ecx; 72*7c478bd9Sstevel@tonic-gate greg_t r_eax; 73*7c478bd9Sstevel@tonic-gate greg_t r_trapno; 74*7c478bd9Sstevel@tonic-gate greg_t r_err; 75*7c478bd9Sstevel@tonic-gate greg_t r_eip; 76*7c478bd9Sstevel@tonic-gate greg_t r_cs; 77*7c478bd9Sstevel@tonic-gate greg_t r_efl; 78*7c478bd9Sstevel@tonic-gate greg_t r_uesp; 79*7c478bd9Sstevel@tonic-gate greg_t r_ss; 80*7c478bd9Sstevel@tonic-gate }; 81*7c478bd9Sstevel@tonic-gate 82*7c478bd9Sstevel@tonic-gate #define r_r0 r_eax /* r0 for portability */ 83*7c478bd9Sstevel@tonic-gate #define r_r1 r_edx /* r1 for portability */ 84*7c478bd9Sstevel@tonic-gate #define r_fp r_ebp /* system frame pointer */ 85*7c478bd9Sstevel@tonic-gate #define r_sp r_uesp /* user stack pointer */ 86*7c478bd9Sstevel@tonic-gate #define r_pc r_eip /* user's instruction pointer */ 87*7c478bd9Sstevel@tonic-gate #define r_ps r_efl /* user's EFLAGS */ 88*7c478bd9Sstevel@tonic-gate 89*7c478bd9Sstevel@tonic-gate #define GREG_NUM 8 /* Number of regs between %edi and %eax */ 90*7c478bd9Sstevel@tonic-gate 91*7c478bd9Sstevel@tonic-gate #endif /* !_ASM */ 92*7c478bd9Sstevel@tonic-gate 93*7c478bd9Sstevel@tonic-gate #ifdef _KERNEL 94*7c478bd9Sstevel@tonic-gate #define lwptoregs(lwp) ((struct regs *)((lwp)->lwp_regs)) 95*7c478bd9Sstevel@tonic-gate #endif /* _KERNEL */ 96*7c478bd9Sstevel@tonic-gate 97*7c478bd9Sstevel@tonic-gate /* 98*7c478bd9Sstevel@tonic-gate * Save current frame on the stack. Uses %eax. 99*7c478bd9Sstevel@tonic-gate */ 100*7c478bd9Sstevel@tonic-gate #define __FRAME_PUSH \ 101*7c478bd9Sstevel@tonic-gate subl $8, %esp; \ 102*7c478bd9Sstevel@tonic-gate movl REGOFF_EIP(%esp), %eax; \ 103*7c478bd9Sstevel@tonic-gate movl %eax, REGOFF_SAVPC(%esp); \ 104*7c478bd9Sstevel@tonic-gate movl %ebp, REGOFF_SAVFP(%esp); 105*7c478bd9Sstevel@tonic-gate 106*7c478bd9Sstevel@tonic-gate /* 107*7c478bd9Sstevel@tonic-gate * Save segment registers on the stack. 108*7c478bd9Sstevel@tonic-gate */ 109*7c478bd9Sstevel@tonic-gate #define __SEGREGS_PUSH \ 110*7c478bd9Sstevel@tonic-gate subl $16, %esp; \ 111*7c478bd9Sstevel@tonic-gate movw %ds, 12(%esp); \ 112*7c478bd9Sstevel@tonic-gate movw %es, 8(%esp); \ 113*7c478bd9Sstevel@tonic-gate movw %fs, 4(%esp); \ 114*7c478bd9Sstevel@tonic-gate movw %gs, 0(%esp); 115*7c478bd9Sstevel@tonic-gate 116*7c478bd9Sstevel@tonic-gate /* 117*7c478bd9Sstevel@tonic-gate * Load segment register with kernel selectors. 118*7c478bd9Sstevel@tonic-gate * %gs must be the last one to be set to make the 119*7c478bd9Sstevel@tonic-gate * check in cmnint valid. 120*7c478bd9Sstevel@tonic-gate */ 121*7c478bd9Sstevel@tonic-gate #define __SEGREGS_LOAD_KERNEL \ 122*7c478bd9Sstevel@tonic-gate movw $KDS_SEL, %ax; \ 123*7c478bd9Sstevel@tonic-gate movw $KFS_SEL, %cx; \ 124*7c478bd9Sstevel@tonic-gate movw $KGS_SEL, %dx; \ 125*7c478bd9Sstevel@tonic-gate movw %ax, %ds; \ 126*7c478bd9Sstevel@tonic-gate movw %ax, %es; \ 127*7c478bd9Sstevel@tonic-gate movw %cx, %fs; \ 128*7c478bd9Sstevel@tonic-gate movw %dx, %gs; 129*7c478bd9Sstevel@tonic-gate 130*7c478bd9Sstevel@tonic-gate /* 131*7c478bd9Sstevel@tonic-gate * Restore segment registers off the stack. 132*7c478bd9Sstevel@tonic-gate * 133*7c478bd9Sstevel@tonic-gate * NOTE THE ORDER IS VITAL! 134*7c478bd9Sstevel@tonic-gate * 135*7c478bd9Sstevel@tonic-gate * Also note the subtle interdependency with kern_gpfault() 136*7c478bd9Sstevel@tonic-gate * that needs to disassemble these instructions to diagnose 137*7c478bd9Sstevel@tonic-gate * what happened when things (like bad segment register 138*7c478bd9Sstevel@tonic-gate * values) go horribly wrong. 139*7c478bd9Sstevel@tonic-gate */ 140*7c478bd9Sstevel@tonic-gate #define __SEGREGS_POP \ 141*7c478bd9Sstevel@tonic-gate movw 0(%esp), %gs; \ 142*7c478bd9Sstevel@tonic-gate movw 4(%esp), %fs; \ 143*7c478bd9Sstevel@tonic-gate movw 8(%esp), %es; \ 144*7c478bd9Sstevel@tonic-gate movw 12(%esp), %ds; \ 145*7c478bd9Sstevel@tonic-gate addl $16, %esp; 146*7c478bd9Sstevel@tonic-gate 147*7c478bd9Sstevel@tonic-gate /* 148*7c478bd9Sstevel@tonic-gate * Macros for saving all registers necessary on interrupt entry, 149*7c478bd9Sstevel@tonic-gate * and restoring them on exit. 150*7c478bd9Sstevel@tonic-gate */ 151*7c478bd9Sstevel@tonic-gate #define INTR_PUSH \ 152*7c478bd9Sstevel@tonic-gate pusha; \ 153*7c478bd9Sstevel@tonic-gate __SEGREGS_PUSH \ 154*7c478bd9Sstevel@tonic-gate __FRAME_PUSH \ 155*7c478bd9Sstevel@tonic-gate cmpw $KGS_SEL, REGOFF_GS(%esp); \ 156*7c478bd9Sstevel@tonic-gate je 7f; \ 157*7c478bd9Sstevel@tonic-gate movl $0, REGOFF_SAVFP(%esp); \ 158*7c478bd9Sstevel@tonic-gate __SEGREGS_LOAD_KERNEL \ 159*7c478bd9Sstevel@tonic-gate 7: 160*7c478bd9Sstevel@tonic-gate 161*7c478bd9Sstevel@tonic-gate #define INTR_POP \ 162*7c478bd9Sstevel@tonic-gate popa; \ 163*7c478bd9Sstevel@tonic-gate addl $8, %esp; /* get TRAPNO and ERR off the stack */ 164*7c478bd9Sstevel@tonic-gate 165*7c478bd9Sstevel@tonic-gate #define INTR_POP_USER \ 166*7c478bd9Sstevel@tonic-gate addl $8, %esp; /* get extra frame off the stack */ \ 167*7c478bd9Sstevel@tonic-gate __SEGREGS_POP \ 168*7c478bd9Sstevel@tonic-gate INTR_POP 169*7c478bd9Sstevel@tonic-gate 170*7c478bd9Sstevel@tonic-gate #define INTR_POP_KERNEL \ 171*7c478bd9Sstevel@tonic-gate addl $24, %esp; /* skip extra frame and segment registers */ \ 172*7c478bd9Sstevel@tonic-gate INTR_POP 173*7c478bd9Sstevel@tonic-gate 174*7c478bd9Sstevel@tonic-gate /* 175*7c478bd9Sstevel@tonic-gate * Macros for saving the original segment registers and restoring them 176*7c478bd9Sstevel@tonic-gate * for fast traps. 177*7c478bd9Sstevel@tonic-gate */ 178*7c478bd9Sstevel@tonic-gate #define FAST_INTR_PUSH \ 179*7c478bd9Sstevel@tonic-gate __SEGREGS_PUSH \ 180*7c478bd9Sstevel@tonic-gate __SEGREGS_LOAD_KERNEL 181*7c478bd9Sstevel@tonic-gate 182*7c478bd9Sstevel@tonic-gate #define FAST_INTR_POP \ 183*7c478bd9Sstevel@tonic-gate __SEGREGS_POP 184*7c478bd9Sstevel@tonic-gate 185*7c478bd9Sstevel@tonic-gate #define DISABLE_INTR_FLAGS \ 186*7c478bd9Sstevel@tonic-gate pushl $F_OFF; \ 187*7c478bd9Sstevel@tonic-gate popfl; 188*7c478bd9Sstevel@tonic-gate 189*7c478bd9Sstevel@tonic-gate #define ENABLE_INTR_FLAGS \ 190*7c478bd9Sstevel@tonic-gate pushl $F_ON; \ 191*7c478bd9Sstevel@tonic-gate popfl; 192*7c478bd9Sstevel@tonic-gate 193*7c478bd9Sstevel@tonic-gate /* 194*7c478bd9Sstevel@tonic-gate * Macros for saving all registers necessary on system call entry, 195*7c478bd9Sstevel@tonic-gate * and restoring them on exit. 196*7c478bd9Sstevel@tonic-gate */ 197*7c478bd9Sstevel@tonic-gate #define SYSCALL_PUSH \ 198*7c478bd9Sstevel@tonic-gate pusha; \ 199*7c478bd9Sstevel@tonic-gate __SEGREGS_PUSH \ 200*7c478bd9Sstevel@tonic-gate __FRAME_PUSH \ 201*7c478bd9Sstevel@tonic-gate pushfl; \ 202*7c478bd9Sstevel@tonic-gate popl %ecx; \ 203*7c478bd9Sstevel@tonic-gate orl $PS_IE, %ecx; \ 204*7c478bd9Sstevel@tonic-gate movl %ecx, REGOFF_EFL(%esp); \ 205*7c478bd9Sstevel@tonic-gate movl $0, REGOFF_SAVFP(%esp); \ 206*7c478bd9Sstevel@tonic-gate __SEGREGS_LOAD_KERNEL 207*7c478bd9Sstevel@tonic-gate 208*7c478bd9Sstevel@tonic-gate #define SYSENTER_PUSH \ 209*7c478bd9Sstevel@tonic-gate pusha; \ 210*7c478bd9Sstevel@tonic-gate __SEGREGS_PUSH \ 211*7c478bd9Sstevel@tonic-gate __FRAME_PUSH \ 212*7c478bd9Sstevel@tonic-gate movl $0, REGOFF_SAVFP(%esp); \ 213*7c478bd9Sstevel@tonic-gate __SEGREGS_LOAD_KERNEL 214*7c478bd9Sstevel@tonic-gate 215*7c478bd9Sstevel@tonic-gate #define SYSCALL_POP \ 216*7c478bd9Sstevel@tonic-gate INTR_POP_USER 217*7c478bd9Sstevel@tonic-gate 218*7c478bd9Sstevel@tonic-gate 219*7c478bd9Sstevel@tonic-gate 220*7c478bd9Sstevel@tonic-gate #include <sys/controlregs.h> 221*7c478bd9Sstevel@tonic-gate 222*7c478bd9Sstevel@tonic-gate /* Control register layout for panic dump */ 223*7c478bd9Sstevel@tonic-gate 224*7c478bd9Sstevel@tonic-gate #define CREGSZ 36 225*7c478bd9Sstevel@tonic-gate #define CREG_GDT 0 226*7c478bd9Sstevel@tonic-gate #define CREG_IDT 8 227*7c478bd9Sstevel@tonic-gate #define CREG_LDT 16 228*7c478bd9Sstevel@tonic-gate #define CREG_TASKR 18 229*7c478bd9Sstevel@tonic-gate #define CREG_CR0 20 230*7c478bd9Sstevel@tonic-gate #define CREG_CR2 24 231*7c478bd9Sstevel@tonic-gate #define CREG_CR3 28 232*7c478bd9Sstevel@tonic-gate #define CREG_CR4 32 233*7c478bd9Sstevel@tonic-gate 234*7c478bd9Sstevel@tonic-gate #if !defined(_ASM) && defined(_INT64_TYPE) 235*7c478bd9Sstevel@tonic-gate 236*7c478bd9Sstevel@tonic-gate typedef uint64_t creg64_t; 237*7c478bd9Sstevel@tonic-gate 238*7c478bd9Sstevel@tonic-gate struct cregs { 239*7c478bd9Sstevel@tonic-gate creg64_t cr_gdt; 240*7c478bd9Sstevel@tonic-gate creg64_t cr_idt; 241*7c478bd9Sstevel@tonic-gate uint16_t cr_ldt; 242*7c478bd9Sstevel@tonic-gate uint16_t cr_task; 243*7c478bd9Sstevel@tonic-gate uint32_t cr_cr0; 244*7c478bd9Sstevel@tonic-gate uint32_t cr_cr2; 245*7c478bd9Sstevel@tonic-gate uint32_t cr_cr3; 246*7c478bd9Sstevel@tonic-gate uint32_t cr_cr4; 247*7c478bd9Sstevel@tonic-gate }; 248*7c478bd9Sstevel@tonic-gate 249*7c478bd9Sstevel@tonic-gate #if defined(_KERNEL) 250*7c478bd9Sstevel@tonic-gate extern void getcregs(struct cregs *); 251*7c478bd9Sstevel@tonic-gate #endif /* _KERNEL */ 252*7c478bd9Sstevel@tonic-gate 253*7c478bd9Sstevel@tonic-gate #endif /* !_ASM && _INT64_TYPE */ 254*7c478bd9Sstevel@tonic-gate 255*7c478bd9Sstevel@tonic-gate #ifdef __cplusplus 256*7c478bd9Sstevel@tonic-gate } 257*7c478bd9Sstevel@tonic-gate #endif 258*7c478bd9Sstevel@tonic-gate 259*7c478bd9Sstevel@tonic-gate #endif /* !_IA32_SYS_PRIVREGS_H */ 260