1/* 2 * Copyright (C) 2000, 2001, 2002 Jeff Dike (jdike@karaya.com) 3 * Licensed under the GPL 4 */ 5 6#ifndef __SYSDEP_I386_PTRACE_H 7#define __SYSDEP_I386_PTRACE_H 8 9#include "uml-config.h" 10#include "user_constants.h" 11#include "sysdep/faultinfo.h" 12#include "choose-mode.h" 13 14#define MAX_REG_NR (UM_FRAME_SIZE / sizeof(unsigned long)) 15#define MAX_REG_OFFSET (UM_FRAME_SIZE) 16 17#ifdef UML_CONFIG_PT_PROXY 18extern void update_debugregs(int seq); 19#else 20static inline void update_debugregs(int seq) {} 21#endif 22 23 24/* syscall emulation path in ptrace */ 25 26#ifndef PTRACE_SYSEMU 27#define PTRACE_SYSEMU 31 28#endif 29 30void set_using_sysemu(int value); 31int get_using_sysemu(void); 32extern int sysemu_supported; 33 34#ifdef UML_CONFIG_MODE_TT 35#include "sysdep/sc.h" 36#endif 37 38#ifdef UML_CONFIG_MODE_SKAS 39 40#include "skas_ptregs.h" 41 42#define REGS_IP(r) ((r)[HOST_IP]) 43#define REGS_SP(r) ((r)[HOST_SP]) 44#define REGS_EFLAGS(r) ((r)[HOST_EFLAGS]) 45#define REGS_EAX(r) ((r)[HOST_EAX]) 46#define REGS_EBX(r) ((r)[HOST_EBX]) 47#define REGS_ECX(r) ((r)[HOST_ECX]) 48#define REGS_EDX(r) ((r)[HOST_EDX]) 49#define REGS_ESI(r) ((r)[HOST_ESI]) 50#define REGS_EDI(r) ((r)[HOST_EDI]) 51#define REGS_EBP(r) ((r)[HOST_EBP]) 52#define REGS_CS(r) ((r)[HOST_CS]) 53#define REGS_SS(r) ((r)[HOST_SS]) 54#define REGS_DS(r) ((r)[HOST_DS]) 55#define REGS_ES(r) ((r)[HOST_ES]) 56#define REGS_FS(r) ((r)[HOST_FS]) 57#define REGS_GS(r) ((r)[HOST_GS]) 58 59#define REGS_SET_SYSCALL_RETURN(r, res) REGS_EAX(r) = (res) 60 61#define REGS_RESTART_SYSCALL(r) IP_RESTART_SYSCALL(REGS_IP(r)) 62 63#endif 64#ifndef PTRACE_SYSEMU_SINGLESTEP 65#define PTRACE_SYSEMU_SINGLESTEP 32 66#endif 67 68union uml_pt_regs { 69#ifdef UML_CONFIG_MODE_TT 70 struct tt_regs { 71 long syscall; 72 void *sc; 73 struct faultinfo faultinfo; 74 } tt; 75#endif 76#ifdef UML_CONFIG_MODE_SKAS 77 struct skas_regs { 78 unsigned long regs[MAX_REG_NR]; 79 unsigned long fp[HOST_FP_SIZE]; 80 unsigned long xfp[HOST_XFP_SIZE]; 81 struct faultinfo faultinfo; 82 long syscall; 83 int is_user; 84 } skas; 85#endif 86}; 87 88#define EMPTY_UML_PT_REGS { } 89 90extern int mode_tt; 91 92#define UPT_SC(r) ((r)->tt.sc) 93#define UPT_IP(r) \ 94 __CHOOSE_MODE(SC_IP(UPT_SC(r)), REGS_IP((r)->skas.regs)) 95#define UPT_SP(r) \ 96 __CHOOSE_MODE(SC_SP(UPT_SC(r)), REGS_SP((r)->skas.regs)) 97#define UPT_EFLAGS(r) \ 98 __CHOOSE_MODE(SC_EFLAGS(UPT_SC(r)), REGS_EFLAGS((r)->skas.regs)) 99#define UPT_EAX(r) \ 100 __CHOOSE_MODE(SC_EAX(UPT_SC(r)), REGS_EAX((r)->skas.regs)) 101#define UPT_EBX(r) \ 102 __CHOOSE_MODE(SC_EBX(UPT_SC(r)), REGS_EBX((r)->skas.regs)) 103#define UPT_ECX(r) \ 104 __CHOOSE_MODE(SC_ECX(UPT_SC(r)), REGS_ECX((r)->skas.regs)) 105#define UPT_EDX(r) \ 106 __CHOOSE_MODE(SC_EDX(UPT_SC(r)), REGS_EDX((r)->skas.regs)) 107#define UPT_ESI(r) \ 108 __CHOOSE_MODE(SC_ESI(UPT_SC(r)), REGS_ESI((r)->skas.regs)) 109#define UPT_EDI(r) \ 110 __CHOOSE_MODE(SC_EDI(UPT_SC(r)), REGS_EDI((r)->skas.regs)) 111#define UPT_EBP(r) \ 112 __CHOOSE_MODE(SC_EBP(UPT_SC(r)), REGS_EBP((r)->skas.regs)) 113#define UPT_ORIG_EAX(r) \ 114 __CHOOSE_MODE((r)->tt.syscall, (r)->skas.syscall) 115#define UPT_CS(r) \ 116 __CHOOSE_MODE(SC_CS(UPT_SC(r)), REGS_CS((r)->skas.regs)) 117#define UPT_SS(r) \ 118 __CHOOSE_MODE(SC_SS(UPT_SC(r)), REGS_SS((r)->skas.regs)) 119#define UPT_DS(r) \ 120 __CHOOSE_MODE(SC_DS(UPT_SC(r)), REGS_DS((r)->skas.regs)) 121#define UPT_ES(r) \ 122 __CHOOSE_MODE(SC_ES(UPT_SC(r)), REGS_ES((r)->skas.regs)) 123#define UPT_FS(r) \ 124 __CHOOSE_MODE(SC_FS(UPT_SC(r)), REGS_FS((r)->skas.regs)) 125#define UPT_GS(r) \ 126 __CHOOSE_MODE(SC_GS(UPT_SC(r)), REGS_GS((r)->skas.regs)) 127 128#define UPT_SYSCALL_ARG1(r) UPT_EBX(r) 129#define UPT_SYSCALL_ARG2(r) UPT_ECX(r) 130#define UPT_SYSCALL_ARG3(r) UPT_EDX(r) 131#define UPT_SYSCALL_ARG4(r) UPT_ESI(r) 132#define UPT_SYSCALL_ARG5(r) UPT_EDI(r) 133#define UPT_SYSCALL_ARG6(r) UPT_EBP(r) 134 135extern int user_context(unsigned long sp); 136 137#define UPT_IS_USER(r) \ 138 CHOOSE_MODE(user_context(UPT_SP(r)), (r)->skas.is_user) 139 140struct syscall_args { 141 unsigned long args[6]; 142}; 143 144#define SYSCALL_ARGS(r) ((struct syscall_args) \ 145 { .args = { UPT_SYSCALL_ARG1(r), \ 146 UPT_SYSCALL_ARG2(r), \ 147 UPT_SYSCALL_ARG3(r), \ 148 UPT_SYSCALL_ARG4(r), \ 149 UPT_SYSCALL_ARG5(r), \ 150 UPT_SYSCALL_ARG6(r) } } ) 151 152#define UPT_REG(regs, reg) \ 153 ({ unsigned long val; \ 154 switch(reg){ \ 155 case EIP: val = UPT_IP(regs); break; \ 156 case UESP: val = UPT_SP(regs); break; \ 157 case EAX: val = UPT_EAX(regs); break; \ 158 case EBX: val = UPT_EBX(regs); break; \ 159 case ECX: val = UPT_ECX(regs); break; \ 160 case EDX: val = UPT_EDX(regs); break; \ 161 case ESI: val = UPT_ESI(regs); break; \ 162 case EDI: val = UPT_EDI(regs); break; \ 163 case EBP: val = UPT_EBP(regs); break; \ 164 case ORIG_EAX: val = UPT_ORIG_EAX(regs); break; \ 165 case CS: val = UPT_CS(regs); break; \ 166 case SS: val = UPT_SS(regs); break; \ 167 case DS: val = UPT_DS(regs); break; \ 168 case ES: val = UPT_ES(regs); break; \ 169 case FS: val = UPT_FS(regs); break; \ 170 case GS: val = UPT_GS(regs); break; \ 171 case EFL: val = UPT_EFLAGS(regs); break; \ 172 default : \ 173 panic("Bad register in UPT_REG : %d\n", reg); \ 174 val = -1; \ 175 } \ 176 val; \ 177 }) 178 179 180#define UPT_SET(regs, reg, val) \ 181 do { \ 182 switch(reg){ \ 183 case EIP: UPT_IP(regs) = val; break; \ 184 case UESP: UPT_SP(regs) = val; break; \ 185 case EAX: UPT_EAX(regs) = val; break; \ 186 case EBX: UPT_EBX(regs) = val; break; \ 187 case ECX: UPT_ECX(regs) = val; break; \ 188 case EDX: UPT_EDX(regs) = val; break; \ 189 case ESI: UPT_ESI(regs) = val; break; \ 190 case EDI: UPT_EDI(regs) = val; break; \ 191 case EBP: UPT_EBP(regs) = val; break; \ 192 case ORIG_EAX: UPT_ORIG_EAX(regs) = val; break; \ 193 case CS: UPT_CS(regs) = val; break; \ 194 case SS: UPT_SS(regs) = val; break; \ 195 case DS: UPT_DS(regs) = val; break; \ 196 case ES: UPT_ES(regs) = val; break; \ 197 case FS: UPT_FS(regs) = val; break; \ 198 case GS: UPT_GS(regs) = val; break; \ 199 case EFL: UPT_EFLAGS(regs) = val; break; \ 200 default : \ 201 panic("Bad register in UPT_SET : %d\n", reg); \ 202 break; \ 203 } \ 204 } while (0) 205 206#define UPT_SET_SYSCALL_RETURN(r, res) \ 207 CHOOSE_MODE(SC_SET_SYSCALL_RETURN(UPT_SC(r), (res)), \ 208 REGS_SET_SYSCALL_RETURN((r)->skas.regs, (res))) 209 210#define UPT_RESTART_SYSCALL(r) \ 211 CHOOSE_MODE(SC_RESTART_SYSCALL(UPT_SC(r)), \ 212 REGS_RESTART_SYSCALL((r)->skas.regs)) 213 214#define UPT_ORIG_SYSCALL(r) UPT_EAX(r) 215#define UPT_SYSCALL_NR(r) UPT_ORIG_EAX(r) 216#define UPT_SYSCALL_RET(r) UPT_EAX(r) 217 218#define UPT_FAULTINFO(r) \ 219 CHOOSE_MODE((&(r)->tt.faultinfo), (&(r)->skas.faultinfo)) 220 221#endif 222 223/* 224 * Overrides for Emacs so that we follow Linus's tabbing style. 225 * Emacs will notice this stuff at the end of the file and automatically 226 * adjust the settings for this buffer only. This must remain at the end 227 * of the file. 228 * --------------------------------------------------------------------------- 229 * Local variables: 230 * c-file-style: "linux" 231 * End: 232 */ 233