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) 2000-2011 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_darwin) 69 # undef VG_ELF_DATA2XXX 70 # undef VG_ELF_MACHINE 71 # undef VG_ELF_CLASS 72 # undef VG_PLAT_USES_PPCTOC 73 #elif defined(VGP_s390x_linux) 74 # define VG_ELF_DATA2XXX ELFDATA2MSB 75 # define VG_ELF_MACHINE EM_S390 76 # define VG_ELF_CLASS ELFCLASS64 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 #elif defined(VGA_s390x) 103 # define VG_INSTR_PTR guest_IA 104 # define VG_STACK_PTR guest_SP 105 # define VG_FRAME_PTR guest_FP 106 #else 107 # error Unknown arch 108 #endif 109 110 111 // Offsets for the Vex state 112 #define VG_O_STACK_PTR (offsetof(VexGuestArchState, VG_STACK_PTR)) 113 #define VG_O_INSTR_PTR (offsetof(VexGuestArchState, VG_INSTR_PTR)) 114 115 116 //------------------------------------------------------------- 117 // Guest state accessors that are not visible to tools. The only 118 // ones that are visible are get_IP and get_SP. 119 120 //Addr VG_(get_IP) ( ThreadId tid ); // in pub_tool_machine.h 121 //Addr VG_(get_SP) ( ThreadId tid ); // in pub_tool_machine.h 122 Addr VG_(get_FP) ( ThreadId tid ); 123 124 void VG_(set_IP) ( ThreadId tid, Addr encip ); 125 void VG_(set_SP) ( ThreadId tid, Addr sp ); 126 127 128 //------------------------------------------------------------- 129 // Get hold of the values needed for a stack unwind, for the specified 130 // (client) thread. 131 void VG_(get_UnwindStartRegs) ( /*OUT*/UnwindStartRegs* regs, 132 ThreadId tid ); 133 134 135 //------------------------------------------------------------- 136 /* Details about the capabilities of the underlying (host) CPU. These 137 details are acquired by (1) enquiring with the CPU at startup, or 138 (2) from the AT_SYSINFO entries the kernel gave us (ppc cache 139 line size). It's a bit nasty in the sense that there's no obvious 140 way to stop uses of some of this info before it's ready to go. 141 142 Current dependencies are: 143 144 x86: initially: call VG_(machine_get_hwcaps) 145 146 then safe to use VG_(machine_get_VexArchInfo) 147 and VG_(machine_x86_have_mxcsr) 148 ------------- 149 amd64: initially: call VG_(machine_get_hwcaps) 150 151 then safe to use VG_(machine_get_VexArchInfo) 152 ------------- 153 ppc32: initially: call VG_(machine_get_hwcaps) 154 call VG_(machine_ppc32_set_clszB) 155 156 then safe to use VG_(machine_get_VexArchInfo) 157 and VG_(machine_ppc32_has_FP) 158 and VG_(machine_ppc32_has_VMX) 159 ------------- 160 ppc64: initially: call VG_(machine_get_hwcaps) 161 call VG_(machine_ppc64_set_clszB) 162 163 then safe to use VG_(machine_get_VexArchInfo) 164 and VG_(machine_ppc64_has_VMX) 165 ------------- 166 arm: initially: call VG_(machine_get_hwcaps) 167 call VG_(machine_arm_set_has_NEON) 168 169 then safe to use VG_(machine_get_VexArchInfo) 170 171 VG_(machine_get_hwcaps) may use signals (although it attempts to 172 leave signal state unchanged) and therefore should only be 173 called before m_main sets up the client's signal state. 174 */ 175 176 /* Determine what insn set and insn set variant the host has, and 177 record it. To be called once at system startup. Returns False if 178 this a CPU incapable of running Valgrind. */ 179 extern Bool VG_(machine_get_hwcaps)( void ); 180 181 /* Fetch host cpu info, as per above comment. */ 182 extern void VG_(machine_get_VexArchInfo)( /*OUT*/VexArch*, 183 /*OUT*/VexArchInfo* ); 184 185 /* Notify host cpu cache line size, as per above comment. */ 186 #if defined(VGA_ppc32) 187 extern void VG_(machine_ppc32_set_clszB)( Int ); 188 #endif 189 190 #if defined(VGA_ppc64) 191 extern void VG_(machine_ppc64_set_clszB)( Int ); 192 #endif 193 194 #if defined(VGA_arm) 195 extern void VG_(machine_arm_set_has_NEON)( Bool ); 196 #endif 197 198 /* X86: set to 1 if the host is able to do {ld,st}mxcsr (load/store 199 the SSE control/status register), else zero. Is referenced from 200 assembly code, so do not change from a 32-bit int. */ 201 #if defined(VGA_x86) 202 extern UInt VG_(machine_x86_have_mxcsr); 203 #endif 204 205 /* PPC32: set to 1 if FP instructions are supported in user-space, 206 else 0. Is referenced from assembly code, so do not change from a 207 32-bit int. */ 208 #if defined(VGA_ppc32) 209 extern UInt VG_(machine_ppc32_has_FP); 210 #endif 211 212 /* PPC32: set to 1 if Altivec instructions are supported in 213 user-space, else 0. Is referenced from assembly code, so do not 214 change from a 32-bit int. */ 215 #if defined(VGA_ppc32) 216 extern UInt VG_(machine_ppc32_has_VMX); 217 #endif 218 219 /* PPC64: set to 1 if Altivec instructions are supported in 220 user-space, else 0. Is referenced from assembly code, so do not 221 change from a 64-bit int. */ 222 #if defined(VGA_ppc64) 223 extern ULong VG_(machine_ppc64_has_VMX); 224 #endif 225 226 #if defined(VGA_arm) 227 extern Int VG_(machine_arm_archlevel); 228 #endif 229 230 #endif // __PUB_CORE_MACHINE_H 231 232 /*--------------------------------------------------------------------*/ 233 /*--- end ---*/ 234 /*--------------------------------------------------------------------*/ 235
