1 2/*--------------------------------------------------------------------*/ 3/*--- Machine-related things. pub_core_machine.h ---*/ 4/*--------------------------------------------------------------------*/ 5 6/* 7 This file is part of Valgrind, a dynamic binary instrumentation 8 framework. 9 10 Copyright (C) 2000-2010 Julian Seward 11 jseward@acm.org 12 13 This program is free software; you can redistribute it and/or 14 modify it under the terms of the GNU General Public License as 15 published by the Free Software Foundation; either version 2 of the 16 License, or (at your option) any later version. 17 18 This program is distributed in the hope that it will be useful, but 19 WITHOUT ANY WARRANTY; without even the implied warranty of 20 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 21 General Public License for more details. 22 23 You should have received a copy of the GNU General Public License 24 along with this program; if not, write to the Free Software 25 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 26 02111-1307, USA. 27 28 The GNU General Public License is contained in the file COPYING. 29*/ 30 31#ifndef __PUB_CORE_MACHINE_H 32#define __PUB_CORE_MACHINE_H 33 34//-------------------------------------------------------------------- 35// PURPOSE: This module contains code related to the particular 36// architecture, things like accessing guest state, endianness, word size, 37// etc. 38//-------------------------------------------------------------------- 39 40#include "pub_tool_machine.h" 41 42// XXX: this is *really* the wrong spot for these things 43#if defined(VGP_x86_linux) 44# define VG_ELF_DATA2XXX ELFDATA2LSB 45# define VG_ELF_MACHINE EM_386 46# define VG_ELF_CLASS ELFCLASS32 47# undef VG_PLAT_USES_PPCTOC 48#elif defined(VGP_amd64_linux) 49# define VG_ELF_DATA2XXX ELFDATA2LSB 50# define VG_ELF_MACHINE EM_X86_64 51# define VG_ELF_CLASS ELFCLASS64 52# undef VG_PLAT_USES_PPCTOC 53#elif defined(VGP_ppc32_linux) 54# define VG_ELF_DATA2XXX ELFDATA2MSB 55# define VG_ELF_MACHINE EM_PPC 56# define VG_ELF_CLASS ELFCLASS32 57# undef VG_PLAT_USES_PPCTOC 58#elif defined(VGP_ppc64_linux) 59# define VG_ELF_DATA2XXX ELFDATA2MSB 60# define VG_ELF_MACHINE EM_PPC64 61# define VG_ELF_CLASS ELFCLASS64 62# define VG_PLAT_USES_PPCTOC 1 63#elif defined(VGP_arm_linux) 64# define VG_ELF_DATA2XXX ELFDATA2LSB 65# define VG_ELF_MACHINE EM_ARM 66# define VG_ELF_CLASS ELFCLASS32 67# undef VG_PLAT_USES_PPCTOC 68#elif defined(VGO_aix5) 69# undef VG_ELF_DATA2XXX 70# undef VG_ELF_MACHINE 71# undef VG_ELF_CLASS 72# define VG_PLAT_USES_PPCTOC 1 73#elif defined(VGO_darwin) 74# undef VG_ELF_DATA2XXX 75# undef VG_ELF_MACHINE 76# undef VG_ELF_CLASS 77# undef VG_PLAT_USES_PPCTOC 78#else 79# error Unknown platform 80#endif 81 82#if defined(VGA_x86) 83# define VG_INSTR_PTR guest_EIP 84# define VG_STACK_PTR guest_ESP 85# define VG_FRAME_PTR guest_EBP 86#elif defined(VGA_amd64) 87# define VG_INSTR_PTR guest_RIP 88# define VG_STACK_PTR guest_RSP 89# define VG_FRAME_PTR guest_RBP 90#elif defined(VGA_ppc32) 91# define VG_INSTR_PTR guest_CIA 92# define VG_STACK_PTR guest_GPR1 93# define VG_FRAME_PTR guest_GPR1 // No frame ptr for PPC 94#elif defined(VGA_ppc64) 95# define VG_INSTR_PTR guest_CIA 96# define VG_STACK_PTR guest_GPR1 97# define VG_FRAME_PTR guest_GPR1 // No frame ptr for PPC 98#elif defined(VGA_arm) 99# define VG_INSTR_PTR guest_R15T 100# define VG_STACK_PTR guest_R13 101# define VG_FRAME_PTR guest_R11 102#else 103# error Unknown arch 104#endif 105 106 107// Offsets for the Vex state 108#define VG_O_STACK_PTR (offsetof(VexGuestArchState, VG_STACK_PTR)) 109#define VG_O_INSTR_PTR (offsetof(VexGuestArchState, VG_INSTR_PTR)) 110 111 112//------------------------------------------------------------- 113// Guest state accessors that are not visible to tools. The only 114// ones that are visible are get_IP and get_SP. 115 116//Addr VG_(get_IP) ( ThreadId tid ); // in pub_tool_machine.h 117//Addr VG_(get_SP) ( ThreadId tid ); // in pub_tool_machine.h 118Addr VG_(get_FP) ( ThreadId tid ); 119 120void VG_(set_IP) ( ThreadId tid, Addr encip ); 121void VG_(set_SP) ( ThreadId tid, Addr sp ); 122 123 124//------------------------------------------------------------- 125// Get hold of the values needed for a stack unwind, for the specified 126// (client) thread. 127void VG_(get_UnwindStartRegs) ( /*OUT*/UnwindStartRegs* regs, 128 ThreadId tid ); 129 130 131//------------------------------------------------------------- 132/* Details about the capabilities of the underlying (host) CPU. These 133 details are acquired by (1) enquiring with the CPU at startup, or 134 (2) from the AT_SYSINFO entries the kernel gave us (ppc cache 135 line size). It's a bit nasty in the sense that there's no obvious 136 way to stop uses of some of this info before it's ready to go. 137 138 Current dependencies are: 139 140 x86: initially: call VG_(machine_get_hwcaps) 141 142 then safe to use VG_(machine_get_VexArchInfo) 143 and VG_(machine_x86_have_mxcsr) 144 ------------- 145 amd64: initially: call VG_(machine_get_hwcaps) 146 147 then safe to use VG_(machine_get_VexArchInfo) 148 ------------- 149 ppc32: initially: call VG_(machine_get_hwcaps) 150 call VG_(machine_ppc32_set_clszB) 151 152 then safe to use VG_(machine_get_VexArchInfo) 153 and VG_(machine_ppc32_has_FP) 154 and VG_(machine_ppc32_has_VMX) 155 ------------- 156 ppc64: initially: call VG_(machine_get_hwcaps) 157 call VG_(machine_ppc64_set_clszB) 158 159 then safe to use VG_(machine_get_VexArchInfo) 160 and VG_(machine_ppc64_has_VMX) 161 ------------- 162 arm: initially: call VG_(machine_get_hwcaps) 163 call VG_(machine_arm_set_has_NEON) 164 165 then safe to use VG_(machine_get_VexArchInfo) 166 167 VG_(machine_get_hwcaps) may use signals (although it attempts to 168 leave signal state unchanged) and therefore should only be 169 called before m_main sets up the client's signal state. 170*/ 171 172/* Determine what insn set and insn set variant the host has, and 173 record it. To be called once at system startup. Returns False if 174 this a CPU incapable of running Valgrind. */ 175extern Bool VG_(machine_get_hwcaps)( void ); 176 177/* Fetch host cpu info, as per above comment. */ 178extern void VG_(machine_get_VexArchInfo)( /*OUT*/VexArch*, 179 /*OUT*/VexArchInfo* ); 180 181/* Notify host cpu cache line size, as per above comment. */ 182#if defined(VGA_ppc32) 183extern void VG_(machine_ppc32_set_clszB)( Int ); 184#endif 185 186#if defined(VGA_ppc64) 187extern void VG_(machine_ppc64_set_clszB)( Int ); 188#endif 189 190#if defined(VGA_arm) 191extern void VG_(machine_arm_set_has_NEON)( Bool ); 192#endif 193 194/* X86: set to 1 if the host is able to do {ld,st}mxcsr (load/store 195 the SSE control/status register), else zero. Is referenced from 196 assembly code, so do not change from a 32-bit int. */ 197#if defined(VGA_x86) 198extern UInt VG_(machine_x86_have_mxcsr); 199#endif 200 201/* PPC32: set to 1 if FP instructions are supported in user-space, 202 else 0. Is referenced from assembly code, so do not change from a 203 32-bit int. */ 204#if defined(VGA_ppc32) 205extern UInt VG_(machine_ppc32_has_FP); 206#endif 207 208/* PPC32: set to 1 if Altivec instructions are supported in 209 user-space, else 0. Is referenced from assembly code, so do not 210 change from a 32-bit int. */ 211#if defined(VGA_ppc32) 212extern UInt VG_(machine_ppc32_has_VMX); 213#endif 214 215/* PPC64: set to 1 if Altivec instructions are supported in 216 user-space, else 0. Is referenced from assembly code, so do not 217 change from a 64-bit int. */ 218#if defined(VGA_ppc64) 219extern ULong VG_(machine_ppc64_has_VMX); 220#endif 221 222#if defined(VGA_arm) 223extern Int VG_(machine_arm_archlevel); 224#endif 225 226#endif // __PUB_CORE_MACHINE_H 227 228/*--------------------------------------------------------------------*/ 229/*--- end ---*/ 230/*--------------------------------------------------------------------*/ 231