1/* 2 * Copyright 2003 PathScale, Inc. 3 * Copyright (C) 2003 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com) 4 * 5 * Licensed under the GPL 6 */ 7 8#ifndef __SYSDEP_X86_64_PTRACE_H 9#define __SYSDEP_X86_64_PTRACE_H 10 11#include "user_constants.h" 12#include "sysdep/faultinfo.h" 13 14#define MAX_REG_OFFSET (UM_FRAME_SIZE) 15#define MAX_REG_NR ((MAX_REG_OFFSET) / sizeof(unsigned long)) 16 17#include "skas_ptregs.h" 18 19#define REGS_IP(r) ((r)[HOST_IP]) 20#define REGS_SP(r) ((r)[HOST_SP]) 21 22#define REGS_RBX(r) ((r)[HOST_RBX]) 23#define REGS_RCX(r) ((r)[HOST_RCX]) 24#define REGS_RDX(r) ((r)[HOST_RDX]) 25#define REGS_RSI(r) ((r)[HOST_RSI]) 26#define REGS_RDI(r) ((r)[HOST_RDI]) 27#define REGS_RBP(r) ((r)[HOST_RBP]) 28#define REGS_RAX(r) ((r)[HOST_RAX]) 29#define REGS_R8(r) ((r)[HOST_R8]) 30#define REGS_R9(r) ((r)[HOST_R9]) 31#define REGS_R10(r) ((r)[HOST_R10]) 32#define REGS_R11(r) ((r)[HOST_R11]) 33#define REGS_R12(r) ((r)[HOST_R12]) 34#define REGS_R13(r) ((r)[HOST_R13]) 35#define REGS_R14(r) ((r)[HOST_R14]) 36#define REGS_R15(r) ((r)[HOST_R15]) 37#define REGS_CS(r) ((r)[HOST_CS]) 38#define REGS_EFLAGS(r) ((r)[HOST_EFLAGS]) 39#define REGS_SS(r) ((r)[HOST_SS]) 40 41#define HOST_FS_BASE 21 42#define HOST_GS_BASE 22 43#define HOST_DS 23 44#define HOST_ES 24 45#define HOST_FS 25 46#define HOST_GS 26 47 48/* Also defined in asm/ptrace-x86_64.h, but not in libc headers. So, these 49 * are already defined for kernel code, but not for userspace code. 50 */ 51#ifndef FS_BASE 52/* These aren't defined in ptrace.h, but exist in struct user_regs_struct, 53 * which is what x86_64 ptrace actually uses. 54 */ 55#define FS_BASE (HOST_FS_BASE * sizeof(long)) 56#define GS_BASE (HOST_GS_BASE * sizeof(long)) 57#define DS (HOST_DS * sizeof(long)) 58#define ES (HOST_ES * sizeof(long)) 59#define FS (HOST_FS * sizeof(long)) 60#define GS (HOST_GS * sizeof(long)) 61#endif 62 63#define REGS_FS_BASE(r) ((r)[HOST_FS_BASE]) 64#define REGS_GS_BASE(r) ((r)[HOST_GS_BASE]) 65#define REGS_DS(r) ((r)[HOST_DS]) 66#define REGS_ES(r) ((r)[HOST_ES]) 67#define REGS_FS(r) ((r)[HOST_FS]) 68#define REGS_GS(r) ((r)[HOST_GS]) 69 70#define REGS_ORIG_RAX(r) ((r)[HOST_ORIG_RAX]) 71 72#define REGS_SET_SYSCALL_RETURN(r, res) REGS_RAX(r) = (res) 73 74#define REGS_RESTART_SYSCALL(r) IP_RESTART_SYSCALL(REGS_IP(r)) 75 76#define REGS_SEGV_IS_FIXABLE(r) SEGV_IS_FIXABLE((r)->trap_type) 77 78#define REGS_FAULT_ADDR(r) ((r)->fault_addr) 79 80#define REGS_FAULT_WRITE(r) FAULT_WRITE((r)->fault_type) 81 82#define REGS_TRAP(r) ((r)->trap_type) 83 84#define REGS_ERR(r) ((r)->fault_type) 85 86struct uml_pt_regs { 87 unsigned long gp[MAX_REG_NR]; 88 struct faultinfo faultinfo; 89 long syscall; 90 int is_user; 91}; 92 93#define EMPTY_UML_PT_REGS { } 94 95#define UPT_RBX(r) REGS_RBX((r)->gp) 96#define UPT_RCX(r) REGS_RCX((r)->gp) 97#define UPT_RDX(r) REGS_RDX((r)->gp) 98#define UPT_RSI(r) REGS_RSI((r)->gp) 99#define UPT_RDI(r) REGS_RDI((r)->gp) 100#define UPT_RBP(r) REGS_RBP((r)->gp) 101#define UPT_RAX(r) REGS_RAX((r)->gp) 102#define UPT_R8(r) REGS_R8((r)->gp) 103#define UPT_R9(r) REGS_R9((r)->gp) 104#define UPT_R10(r) REGS_R10((r)->gp) 105#define UPT_R11(r) REGS_R11((r)->gp) 106#define UPT_R12(r) REGS_R12((r)->gp) 107#define UPT_R13(r) REGS_R13((r)->gp) 108#define UPT_R14(r) REGS_R14((r)->gp) 109#define UPT_R15(r) REGS_R15((r)->gp) 110#define UPT_CS(r) REGS_CS((r)->gp) 111#define UPT_FS_BASE(r) REGS_FS_BASE((r)->gp) 112#define UPT_FS(r) REGS_FS((r)->gp) 113#define UPT_GS_BASE(r) REGS_GS_BASE((r)->gp) 114#define UPT_GS(r) REGS_GS((r)->gp) 115#define UPT_DS(r) REGS_DS((r)->gp) 116#define UPT_ES(r) REGS_ES((r)->gp) 117#define UPT_CS(r) REGS_CS((r)->gp) 118#define UPT_SS(r) REGS_SS((r)->gp) 119#define UPT_ORIG_RAX(r) REGS_ORIG_RAX((r)->gp) 120 121#define UPT_IP(r) REGS_IP((r)->gp) 122#define UPT_SP(r) REGS_SP((r)->gp) 123 124#define UPT_EFLAGS(r) REGS_EFLAGS((r)->gp) 125#define UPT_SYSCALL_NR(r) ((r)->syscall) 126#define UPT_SYSCALL_RET(r) UPT_RAX(r) 127 128extern int user_context(unsigned long sp); 129 130#define UPT_IS_USER(r) ((r)->is_user) 131 132#define UPT_SYSCALL_ARG1(r) UPT_RDI(r) 133#define UPT_SYSCALL_ARG2(r) UPT_RSI(r) 134#define UPT_SYSCALL_ARG3(r) UPT_RDX(r) 135#define UPT_SYSCALL_ARG4(r) UPT_R10(r) 136#define UPT_SYSCALL_ARG5(r) UPT_R8(r) 137#define UPT_SYSCALL_ARG6(r) UPT_R9(r) 138 139struct syscall_args { 140 unsigned long args[6]; 141}; 142 143#define SYSCALL_ARGS(r) ((struct syscall_args) \ 144 { .args = { UPT_SYSCALL_ARG1(r), \ 145 UPT_SYSCALL_ARG2(r), \ 146 UPT_SYSCALL_ARG3(r), \ 147 UPT_SYSCALL_ARG4(r), \ 148 UPT_SYSCALL_ARG5(r), \ 149 UPT_SYSCALL_ARG6(r) } } ) 150 151#define UPT_REG(regs, reg) \ 152 ({ unsigned long val; \ 153 switch(reg){ \ 154 case R8: val = UPT_R8(regs); break; \ 155 case R9: val = UPT_R9(regs); break; \ 156 case R10: val = UPT_R10(regs); break; \ 157 case R11: val = UPT_R11(regs); break; \ 158 case R12: val = UPT_R12(regs); break; \ 159 case R13: val = UPT_R13(regs); break; \ 160 case R14: val = UPT_R14(regs); break; \ 161 case R15: val = UPT_R15(regs); break; \ 162 case RIP: val = UPT_IP(regs); break; \ 163 case RSP: val = UPT_SP(regs); break; \ 164 case RAX: val = UPT_RAX(regs); break; \ 165 case RBX: val = UPT_RBX(regs); break; \ 166 case RCX: val = UPT_RCX(regs); break; \ 167 case RDX: val = UPT_RDX(regs); break; \ 168 case RSI: val = UPT_RSI(regs); break; \ 169 case RDI: val = UPT_RDI(regs); break; \ 170 case RBP: val = UPT_RBP(regs); break; \ 171 case ORIG_RAX: val = UPT_ORIG_RAX(regs); break; \ 172 case CS: val = UPT_CS(regs); break; \ 173 case SS: val = UPT_SS(regs); break; \ 174 case FS_BASE: val = UPT_FS_BASE(regs); break; \ 175 case GS_BASE: val = UPT_GS_BASE(regs); break; \ 176 case DS: val = UPT_DS(regs); break; \ 177 case ES: val = UPT_ES(regs); break; \ 178 case FS : val = UPT_FS (regs); break; \ 179 case GS: val = UPT_GS(regs); break; \ 180 case EFLAGS: val = UPT_EFLAGS(regs); break; \ 181 default : \ 182 panic("Bad register in UPT_REG : %d\n", reg); \ 183 val = -1; \ 184 } \ 185 val; \ 186 }) 187 188 189#define UPT_SET(regs, reg, val) \ 190 ({ unsigned long __upt_val = val; \ 191 switch(reg){ \ 192 case R8: UPT_R8(regs) = __upt_val; break; \ 193 case R9: UPT_R9(regs) = __upt_val; break; \ 194 case R10: UPT_R10(regs) = __upt_val; break; \ 195 case R11: UPT_R11(regs) = __upt_val; break; \ 196 case R12: UPT_R12(regs) = __upt_val; break; \ 197 case R13: UPT_R13(regs) = __upt_val; break; \ 198 case R14: UPT_R14(regs) = __upt_val; break; \ 199 case R15: UPT_R15(regs) = __upt_val; break; \ 200 case RIP: UPT_IP(regs) = __upt_val; break; \ 201 case RSP: UPT_SP(regs) = __upt_val; break; \ 202 case RAX: UPT_RAX(regs) = __upt_val; break; \ 203 case RBX: UPT_RBX(regs) = __upt_val; break; \ 204 case RCX: UPT_RCX(regs) = __upt_val; break; \ 205 case RDX: UPT_RDX(regs) = __upt_val; break; \ 206 case RSI: UPT_RSI(regs) = __upt_val; break; \ 207 case RDI: UPT_RDI(regs) = __upt_val; break; \ 208 case RBP: UPT_RBP(regs) = __upt_val; break; \ 209 case ORIG_RAX: UPT_ORIG_RAX(regs) = __upt_val; break; \ 210 case CS: UPT_CS(regs) = __upt_val; break; \ 211 case SS: UPT_SS(regs) = __upt_val; break; \ 212 case FS_BASE: UPT_FS_BASE(regs) = __upt_val; break; \ 213 case GS_BASE: UPT_GS_BASE(regs) = __upt_val; break; \ 214 case DS: UPT_DS(regs) = __upt_val; break; \ 215 case ES: UPT_ES(regs) = __upt_val; break; \ 216 case FS: UPT_FS(regs) = __upt_val; break; \ 217 case GS: UPT_GS(regs) = __upt_val; break; \ 218 case EFLAGS: UPT_EFLAGS(regs) = __upt_val; break; \ 219 default : \ 220 panic("Bad register in UPT_SET : %d\n", reg); \ 221 break; \ 222 } \ 223 __upt_val; \ 224 }) 225 226#define UPT_SET_SYSCALL_RETURN(r, res) \ 227 REGS_SET_SYSCALL_RETURN((r)->regs, (res)) 228 229#define UPT_RESTART_SYSCALL(r) REGS_RESTART_SYSCALL((r)->gp) 230 231#define UPT_SEGV_IS_FIXABLE(r) REGS_SEGV_IS_FIXABLE(&r->skas) 232 233#define UPT_FAULTINFO(r) (&(r)->faultinfo) 234 235static inline void arch_init_registers(int pid) 236{ 237} 238 239#endif 240