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 <generated/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 #define REGS_IP(r) ((r)[HOST_IP]) 18 #define REGS_SP(r) ((r)[HOST_SP]) 19 20 #define REGS_RBX(r) ((r)[HOST_BX]) 21 #define REGS_RCX(r) ((r)[HOST_CX]) 22 #define REGS_RDX(r) ((r)[HOST_DX]) 23 #define REGS_RSI(r) ((r)[HOST_SI]) 24 #define REGS_RDI(r) ((r)[HOST_DI]) 25 #define REGS_RBP(r) ((r)[HOST_BP]) 26 #define REGS_RAX(r) ((r)[HOST_AX]) 27 #define REGS_R8(r) ((r)[HOST_R8]) 28 #define REGS_R9(r) ((r)[HOST_R9]) 29 #define REGS_R10(r) ((r)[HOST_R10]) 30 #define REGS_R11(r) ((r)[HOST_R11]) 31 #define REGS_R12(r) ((r)[HOST_R12]) 32 #define REGS_R13(r) ((r)[HOST_R13]) 33 #define REGS_R14(r) ((r)[HOST_R14]) 34 #define REGS_R15(r) ((r)[HOST_R15]) 35 #define REGS_CS(r) ((r)[HOST_CS]) 36 #define REGS_EFLAGS(r) ((r)[HOST_EFLAGS]) 37 #define REGS_SS(r) ((r)[HOST_SS]) 38 39 #define HOST_FS_BASE 21 40 #define HOST_GS_BASE 22 41 #define HOST_DS 23 42 #define HOST_ES 24 43 #define HOST_FS 25 44 #define HOST_GS 26 45 46 /* Also defined in asm/ptrace-x86_64.h, but not in libc headers. So, these 47 * are already defined for kernel code, but not for userspace code. 48 */ 49 #ifndef FS_BASE 50 /* These aren't defined in ptrace.h, but exist in struct user_regs_struct, 51 * which is what x86_64 ptrace actually uses. 52 */ 53 #define FS_BASE (HOST_FS_BASE * sizeof(long)) 54 #define GS_BASE (HOST_GS_BASE * sizeof(long)) 55 #define DS (HOST_DS * sizeof(long)) 56 #define ES (HOST_ES * sizeof(long)) 57 #define FS (HOST_FS * sizeof(long)) 58 #define GS (HOST_GS * sizeof(long)) 59 #endif 60 61 #define REGS_FS_BASE(r) ((r)[HOST_FS_BASE]) 62 #define REGS_GS_BASE(r) ((r)[HOST_GS_BASE]) 63 #define REGS_DS(r) ((r)[HOST_DS]) 64 #define REGS_ES(r) ((r)[HOST_ES]) 65 #define REGS_FS(r) ((r)[HOST_FS]) 66 #define REGS_GS(r) ((r)[HOST_GS]) 67 68 #define REGS_ORIG_RAX(r) ((r)[HOST_ORIG_AX]) 69 70 #define REGS_SET_SYSCALL_RETURN(r, res) REGS_RAX(r) = (res) 71 72 #define IP_RESTART_SYSCALL(ip) ((ip) -= 2) 73 #define REGS_RESTART_SYSCALL(r) IP_RESTART_SYSCALL(REGS_IP(r)) 74 75 #define REGS_FAULT_ADDR(r) ((r)->fault_addr) 76 77 #define REGS_FAULT_WRITE(r) FAULT_WRITE((r)->fault_type) 78 79 #define REGS_TRAP(r) ((r)->trap_type) 80 81 #define REGS_ERR(r) ((r)->fault_type) 82 83 struct uml_pt_regs { 84 unsigned long gp[MAX_REG_NR]; 85 unsigned long fp[HOST_FP_SIZE]; 86 struct faultinfo faultinfo; 87 long syscall; 88 int is_user; 89 }; 90 91 #define EMPTY_UML_PT_REGS { } 92 93 #define UPT_RBX(r) REGS_RBX((r)->gp) 94 #define UPT_RCX(r) REGS_RCX((r)->gp) 95 #define UPT_RDX(r) REGS_RDX((r)->gp) 96 #define UPT_RSI(r) REGS_RSI((r)->gp) 97 #define UPT_RDI(r) REGS_RDI((r)->gp) 98 #define UPT_RBP(r) REGS_RBP((r)->gp) 99 #define UPT_RAX(r) REGS_RAX((r)->gp) 100 #define UPT_R8(r) REGS_R8((r)->gp) 101 #define UPT_R9(r) REGS_R9((r)->gp) 102 #define UPT_R10(r) REGS_R10((r)->gp) 103 #define UPT_R11(r) REGS_R11((r)->gp) 104 #define UPT_R12(r) REGS_R12((r)->gp) 105 #define UPT_R13(r) REGS_R13((r)->gp) 106 #define UPT_R14(r) REGS_R14((r)->gp) 107 #define UPT_R15(r) REGS_R15((r)->gp) 108 #define UPT_CS(r) REGS_CS((r)->gp) 109 #define UPT_FS_BASE(r) REGS_FS_BASE((r)->gp) 110 #define UPT_FS(r) REGS_FS((r)->gp) 111 #define UPT_GS_BASE(r) REGS_GS_BASE((r)->gp) 112 #define UPT_GS(r) REGS_GS((r)->gp) 113 #define UPT_DS(r) REGS_DS((r)->gp) 114 #define UPT_ES(r) REGS_ES((r)->gp) 115 #define UPT_CS(r) REGS_CS((r)->gp) 116 #define UPT_SS(r) REGS_SS((r)->gp) 117 #define UPT_ORIG_RAX(r) REGS_ORIG_RAX((r)->gp) 118 119 #define UPT_IP(r) REGS_IP((r)->gp) 120 #define UPT_SP(r) REGS_SP((r)->gp) 121 122 #define UPT_EFLAGS(r) REGS_EFLAGS((r)->gp) 123 #define UPT_SYSCALL_NR(r) ((r)->syscall) 124 #define UPT_SYSCALL_RET(r) UPT_RAX(r) 125 126 extern int user_context(unsigned long sp); 127 128 #define UPT_IS_USER(r) ((r)->is_user) 129 130 #define UPT_SYSCALL_ARG1(r) UPT_RDI(r) 131 #define UPT_SYSCALL_ARG2(r) UPT_RSI(r) 132 #define UPT_SYSCALL_ARG3(r) UPT_RDX(r) 133 #define UPT_SYSCALL_ARG4(r) UPT_R10(r) 134 #define UPT_SYSCALL_ARG5(r) UPT_R8(r) 135 #define UPT_SYSCALL_ARG6(r) UPT_R9(r) 136 137 struct syscall_args { 138 unsigned long args[6]; 139 }; 140 141 #define SYSCALL_ARGS(r) ((struct syscall_args) \ 142 { .args = { UPT_SYSCALL_ARG1(r), \ 143 UPT_SYSCALL_ARG2(r), \ 144 UPT_SYSCALL_ARG3(r), \ 145 UPT_SYSCALL_ARG4(r), \ 146 UPT_SYSCALL_ARG5(r), \ 147 UPT_SYSCALL_ARG6(r) } } ) 148 149 #define UPT_RESTART_SYSCALL(r) REGS_RESTART_SYSCALL((r)->gp) 150 151 #define UPT_FAULTINFO(r) (&(r)->faultinfo) 152 153 static inline void arch_init_registers(int pid) 154 { 155 } 156 157 #endif 158