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 (at) 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 118 Addr VG_(get_FP) ( ThreadId tid ); 119 120 void VG_(set_IP) ( ThreadId tid, Addr encip ); 121 void 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. 127 void 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. */ 175 extern Bool VG_(machine_get_hwcaps)( void ); 176 177 /* Fetch host cpu info, as per above comment. */ 178 extern 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) 183 extern void VG_(machine_ppc32_set_clszB)( Int ); 184 #endif 185 186 #if defined(VGA_ppc64) 187 extern void VG_(machine_ppc64_set_clszB)( Int ); 188 #endif 189 190 #if defined(VGA_arm) 191 extern 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) 198 extern 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) 205 extern 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) 212 extern 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) 219 extern ULong VG_(machine_ppc64_has_VMX); 220 #endif 221 222 #if defined(VGA_arm) 223 extern Int VG_(machine_arm_archlevel); 224 #endif 225 226 #endif // __PUB_CORE_MACHINE_H 227 228 /*--------------------------------------------------------------------*/ 229 /*--- end ---*/ 230 /*--------------------------------------------------------------------*/ 231
