1/* 2 * Copyright 2003 PathScale, Inc. 3 * 4 * Licensed under the GPL 5 */ 6 7#ifndef __SYSDEP_X86_64_PTRACE_H 8#define __SYSDEP_X86_64_PTRACE_H 9 10#include "uml-config.h" 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#ifdef UML_CONFIG_MODE_TT 18#include "sysdep/sc.h" 19#endif 20 21#ifdef UML_CONFIG_MODE_SKAS 22#include "skas_ptregs.h" 23 24#define REGS_IP(r) ((r)[HOST_IP]) 25#define REGS_SP(r) ((r)[HOST_SP]) 26 27#define REGS_RBX(r) ((r)[HOST_RBX]) 28#define REGS_RCX(r) ((r)[HOST_RCX]) 29#define REGS_RDX(r) ((r)[HOST_RDX]) 30#define REGS_RSI(r) ((r)[HOST_RSI]) 31#define REGS_RDI(r) ((r)[HOST_RDI]) 32#define REGS_RBP(r) ((r)[HOST_RBP]) 33#define REGS_RAX(r) ((r)[HOST_RAX]) 34#define REGS_R8(r) ((r)[HOST_R8]) 35#define REGS_R9(r) ((r)[HOST_R9]) 36#define REGS_R10(r) ((r)[HOST_R10]) 37#define REGS_R11(r) ((r)[HOST_R11]) 38#define REGS_R12(r) ((r)[HOST_R12]) 39#define REGS_R13(r) ((r)[HOST_R13]) 40#define REGS_R14(r) ((r)[HOST_R14]) 41#define REGS_R15(r) ((r)[HOST_R15]) 42#define REGS_CS(r) ((r)[HOST_CS]) 43#define REGS_EFLAGS(r) ((r)[HOST_EFLAGS]) 44#define REGS_SS(r) ((r)[HOST_SS]) 45 46#define HOST_FS_BASE 21 47#define HOST_GS_BASE 22 48#define HOST_DS 23 49#define HOST_ES 24 50#define HOST_FS 25 51#define HOST_GS 26 52 53/* Also defined in asm/ptrace-x86_64.h, but not in libc headers. So, these 54 * are already defined for kernel code, but not for userspace code. 55 */ 56#ifndef FS_BASE 57/* These aren't defined in ptrace.h, but exist in struct user_regs_struct, 58 * which is what x86_64 ptrace actually uses. 59 */ 60#define FS_BASE (HOST_FS_BASE * sizeof(long)) 61#define GS_BASE (HOST_GS_BASE * sizeof(long)) 62#define DS (HOST_DS * sizeof(long)) 63#define ES (HOST_ES * sizeof(long)) 64#define FS (HOST_FS * sizeof(long)) 65#define GS (HOST_GS * sizeof(long)) 66#endif 67 68#define REGS_FS_BASE(r) ((r)[HOST_FS_BASE]) 69#define REGS_GS_BASE(r) ((r)[HOST_GS_BASE]) 70#define REGS_DS(r) ((r)[HOST_DS]) 71#define REGS_ES(r) ((r)[HOST_ES]) 72#define REGS_FS(r) ((r)[HOST_FS]) 73#define REGS_GS(r) ((r)[HOST_GS]) 74 75#define REGS_ORIG_RAX(r) ((r)[HOST_ORIG_RAX]) 76 77#define REGS_SET_SYSCALL_RETURN(r, res) REGS_RAX(r) = (res) 78 79#define REGS_RESTART_SYSCALL(r) IP_RESTART_SYSCALL(REGS_IP(r)) 80 81#define REGS_SEGV_IS_FIXABLE(r) SEGV_IS_FIXABLE((r)->trap_type) 82 83#define REGS_FAULT_ADDR(r) ((r)->fault_addr) 84 85#define REGS_FAULT_WRITE(r) FAULT_WRITE((r)->fault_type) 86 87#define REGS_TRAP(r) ((r)->trap_type) 88 89#define REGS_ERR(r) ((r)->fault_type) 90 91#endif 92 93#include "choose-mode.h" 94 95union uml_pt_regs { 96#ifdef UML_CONFIG_MODE_TT 97 struct tt_regs { 98 long syscall; 99 unsigned long orig_rax; 100 void *sc; 101 struct faultinfo faultinfo; 102 } tt; 103#endif 104#ifdef UML_CONFIG_MODE_SKAS 105 struct skas_regs { 106 unsigned long regs[MAX_REG_NR]; 107 unsigned long fp[HOST_FP_SIZE]; 108 struct faultinfo faultinfo; 109 long syscall; 110 int is_user; 111 } skas; 112#endif 113}; 114 115#define EMPTY_UML_PT_REGS { } 116 117extern int mode_tt; 118 119#define UPT_RBX(r) __CHOOSE_MODE(SC_RBX(UPT_SC(r)), REGS_RBX((r)->skas.regs)) 120#define UPT_RCX(r) __CHOOSE_MODE(SC_RCX(UPT_SC(r)), REGS_RCX((r)->skas.regs)) 121#define UPT_RDX(r) __CHOOSE_MODE(SC_RDX(UPT_SC(r)), REGS_RDX((r)->skas.regs)) 122#define UPT_RSI(r) __CHOOSE_MODE(SC_RSI(UPT_SC(r)), REGS_RSI((r)->skas.regs)) 123#define UPT_RDI(r) __CHOOSE_MODE(SC_RDI(UPT_SC(r)), REGS_RDI((r)->skas.regs)) 124#define UPT_RBP(r) __CHOOSE_MODE(SC_RBP(UPT_SC(r)), REGS_RBP((r)->skas.regs)) 125#define UPT_RAX(r) __CHOOSE_MODE(SC_RAX(UPT_SC(r)), REGS_RAX((r)->skas.regs)) 126#define UPT_R8(r) __CHOOSE_MODE(SC_R8(UPT_SC(r)), REGS_R8((r)->skas.regs)) 127#define UPT_R9(r) __CHOOSE_MODE(SC_R9(UPT_SC(r)), REGS_R9((r)->skas.regs)) 128#define UPT_R10(r) __CHOOSE_MODE(SC_R10(UPT_SC(r)), REGS_R10((r)->skas.regs)) 129#define UPT_R11(r) __CHOOSE_MODE(SC_R11(UPT_SC(r)), REGS_R11((r)->skas.regs)) 130#define UPT_R12(r) __CHOOSE_MODE(SC_R12(UPT_SC(r)), REGS_R12((r)->skas.regs)) 131#define UPT_R13(r) __CHOOSE_MODE(SC_R13(UPT_SC(r)), REGS_R13((r)->skas.regs)) 132#define UPT_R14(r) __CHOOSE_MODE(SC_R14(UPT_SC(r)), REGS_R14((r)->skas.regs)) 133#define UPT_R15(r) __CHOOSE_MODE(SC_R15(UPT_SC(r)), REGS_R15((r)->skas.regs)) 134#define UPT_CS(r) __CHOOSE_MODE(SC_CS(UPT_SC(r)), REGS_CS((r)->skas.regs)) 135#define UPT_FS_BASE(r) \ 136 __CHOOSE_MODE(SC_FS_BASE(UPT_SC(r)), REGS_FS_BASE((r)->skas.regs)) 137#define UPT_FS(r) __CHOOSE_MODE(SC_FS(UPT_SC(r)), REGS_FS((r)->skas.regs)) 138#define UPT_GS_BASE(r) \ 139 __CHOOSE_MODE(SC_GS_BASE(UPT_SC(r)), REGS_GS_BASE((r)->skas.regs)) 140#define UPT_GS(r) __CHOOSE_MODE(SC_GS(UPT_SC(r)), REGS_GS((r)->skas.regs)) 141#define UPT_DS(r) __CHOOSE_MODE(SC_DS(UPT_SC(r)), REGS_DS((r)->skas.regs)) 142#define UPT_ES(r) __CHOOSE_MODE(SC_ES(UPT_SC(r)), REGS_ES((r)->skas.regs)) 143#define UPT_CS(r) __CHOOSE_MODE(SC_CS(UPT_SC(r)), REGS_CS((r)->skas.regs)) 144#define UPT_SS(r) __CHOOSE_MODE(SC_SS(UPT_SC(r)), REGS_SS((r)->skas.regs)) 145#define UPT_ORIG_RAX(r) \ 146 __CHOOSE_MODE((r)->tt.orig_rax, REGS_ORIG_RAX((r)->skas.regs)) 147 148#define UPT_IP(r) __CHOOSE_MODE(SC_IP(UPT_SC(r)), REGS_IP((r)->skas.regs)) 149#define UPT_SP(r) __CHOOSE_MODE(SC_SP(UPT_SC(r)), REGS_SP((r)->skas.regs)) 150 151#define UPT_EFLAGS(r) \ 152 __CHOOSE_MODE(SC_EFLAGS(UPT_SC(r)), REGS_EFLAGS((r)->skas.regs)) 153#define UPT_SC(r) ((r)->tt.sc) 154#define UPT_SYSCALL_NR(r) __CHOOSE_MODE((r)->tt.syscall, (r)->skas.syscall) 155#define UPT_SYSCALL_RET(r) UPT_RAX(r) 156 157extern int user_context(unsigned long sp); 158 159#define UPT_IS_USER(r) \ 160 CHOOSE_MODE(user_context(UPT_SP(r)), (r)->skas.is_user) 161 162#define UPT_SYSCALL_ARG1(r) UPT_RDI(r) 163#define UPT_SYSCALL_ARG2(r) UPT_RSI(r) 164#define UPT_SYSCALL_ARG3(r) UPT_RDX(r) 165#define UPT_SYSCALL_ARG4(r) UPT_R10(r) 166#define UPT_SYSCALL_ARG5(r) UPT_R8(r) 167#define UPT_SYSCALL_ARG6(r) UPT_R9(r) 168 169struct syscall_args { 170 unsigned long args[6]; 171}; 172 173#define SYSCALL_ARGS(r) ((struct syscall_args) \ 174 { .args = { UPT_SYSCALL_ARG1(r), \ 175 UPT_SYSCALL_ARG2(r), \ 176 UPT_SYSCALL_ARG3(r), \ 177 UPT_SYSCALL_ARG4(r), \ 178 UPT_SYSCALL_ARG5(r), \ 179 UPT_SYSCALL_ARG6(r) } } ) 180 181#define UPT_REG(regs, reg) \ 182 ({ unsigned long val; \ 183 switch(reg){ \ 184 case R8: val = UPT_R8(regs); break; \ 185 case R9: val = UPT_R9(regs); break; \ 186 case R10: val = UPT_R10(regs); break; \ 187 case R11: val = UPT_R11(regs); break; \ 188 case R12: val = UPT_R12(regs); break; \ 189 case R13: val = UPT_R13(regs); break; \ 190 case R14: val = UPT_R14(regs); break; \ 191 case R15: val = UPT_R15(regs); break; \ 192 case RIP: val = UPT_IP(regs); break; \ 193 case RSP: val = UPT_SP(regs); break; \ 194 case RAX: val = UPT_RAX(regs); break; \ 195 case RBX: val = UPT_RBX(regs); break; \ 196 case RCX: val = UPT_RCX(regs); break; \ 197 case RDX: val = UPT_RDX(regs); break; \ 198 case RSI: val = UPT_RSI(regs); break; \ 199 case RDI: val = UPT_RDI(regs); break; \ 200 case RBP: val = UPT_RBP(regs); break; \ 201 case ORIG_RAX: val = UPT_ORIG_RAX(regs); break; \ 202 case CS: val = UPT_CS(regs); break; \ 203 case SS: val = UPT_SS(regs); break; \ 204 case FS_BASE: val = UPT_FS_BASE(regs); break; \ 205 case GS_BASE: val = UPT_GS_BASE(regs); break; \ 206 case DS: val = UPT_DS(regs); break; \ 207 case ES: val = UPT_ES(regs); break; \ 208 case FS : val = UPT_FS (regs); break; \ 209 case GS: val = UPT_GS(regs); break; \ 210 case EFLAGS: val = UPT_EFLAGS(regs); break; \ 211 default : \ 212 panic("Bad register in UPT_REG : %d\n", reg); \ 213 val = -1; \ 214 } \ 215 val; \ 216 }) 217 218 219#define UPT_SET(regs, reg, val) \ 220 ({ unsigned long __upt_val = val; \ 221 switch(reg){ \ 222 case R8: UPT_R8(regs) = __upt_val; break; \ 223 case R9: UPT_R9(regs) = __upt_val; break; \ 224 case R10: UPT_R10(regs) = __upt_val; break; \ 225 case R11: UPT_R11(regs) = __upt_val; break; \ 226 case R12: UPT_R12(regs) = __upt_val; break; \ 227 case R13: UPT_R13(regs) = __upt_val; break; \ 228 case R14: UPT_R14(regs) = __upt_val; break; \ 229 case R15: UPT_R15(regs) = __upt_val; break; \ 230 case RIP: UPT_IP(regs) = __upt_val; break; \ 231 case RSP: UPT_SP(regs) = __upt_val; break; \ 232 case RAX: UPT_RAX(regs) = __upt_val; break; \ 233 case RBX: UPT_RBX(regs) = __upt_val; break; \ 234 case RCX: UPT_RCX(regs) = __upt_val; break; \ 235 case RDX: UPT_RDX(regs) = __upt_val; break; \ 236 case RSI: UPT_RSI(regs) = __upt_val; break; \ 237 case RDI: UPT_RDI(regs) = __upt_val; break; \ 238 case RBP: UPT_RBP(regs) = __upt_val; break; \ 239 case ORIG_RAX: UPT_ORIG_RAX(regs) = __upt_val; break; \ 240 case CS: UPT_CS(regs) = __upt_val; break; \ 241 case SS: UPT_SS(regs) = __upt_val; break; \ 242 case FS_BASE: UPT_FS_BASE(regs) = __upt_val; break; \ 243 case GS_BASE: UPT_GS_BASE(regs) = __upt_val; break; \ 244 case DS: UPT_DS(regs) = __upt_val; break; \ 245 case ES: UPT_ES(regs) = __upt_val; break; \ 246 case FS: UPT_FS(regs) = __upt_val; break; \ 247 case GS: UPT_GS(regs) = __upt_val; break; \ 248 case EFLAGS: UPT_EFLAGS(regs) = __upt_val; break; \ 249 default : \ 250 panic("Bad register in UPT_SET : %d\n", reg); \ 251 break; \ 252 } \ 253 __upt_val; \ 254 }) 255 256#define UPT_SET_SYSCALL_RETURN(r, res) \ 257 CHOOSE_MODE(SC_SET_SYSCALL_RETURN(UPT_SC(r), (res)), \ 258 REGS_SET_SYSCALL_RETURN((r)->skas.regs, (res))) 259 260#define UPT_RESTART_SYSCALL(r) \ 261 CHOOSE_MODE(SC_RESTART_SYSCALL(UPT_SC(r)), \ 262 REGS_RESTART_SYSCALL((r)->skas.regs)) 263 264#define UPT_SEGV_IS_FIXABLE(r) \ 265 CHOOSE_MODE(SC_SEGV_IS_FIXABLE(UPT_SC(r)), \ 266 REGS_SEGV_IS_FIXABLE(&r->skas)) 267 268#define UPT_FAULTINFO(r) \ 269 CHOOSE_MODE((&(r)->tt.faultinfo), (&(r)->skas.faultinfo)) 270 271#endif 272