1 /* libunwind - a platform-independent unwind library 2 Copyright (C) 2006-2007 IBM 3 Contributed by 4 Corey Ashford <cjashfor (at) us.ibm.com> 5 Jose Flavio Aguilar Paulino <jflavio (at) br.ibm.com> <joseflavio (at) gmail.com> 6 7 Copied from libunwind-x86_64.h, modified slightly for building 8 frysk successfully on ppc64, by Wu Zhou <woodzltc (at) cn.ibm.com> 9 Will be replaced when libunwind is ready on ppc64 platform. 10 11 This file is part of libunwind. 12 13 Permission is hereby granted, free of charge, to any person obtaining 14 a copy of this software and associated documentation files (the 15 "Software"), to deal in the Software without restriction, including 16 without limitation the rights to use, copy, modify, merge, publish, 17 distribute, sublicense, and/or sell copies of the Software, and to 18 permit persons to whom the Software is furnished to do so, subject to 19 the following conditions: 20 21 The above copyright notice and this permission notice shall be 22 included in all copies or substantial portions of the Software. 23 24 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 25 EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 26 MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 27 NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE 28 LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION 29 OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION 30 WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */ 31 32 #ifndef LIBUNWIND_H 33 #define LIBUNWIND_H 34 35 #if defined(__cplusplus) || defined(c_plusplus) 36 extern "C" { 37 #endif 38 39 #include <inttypes.h> 40 #include <ucontext.h> 41 42 #define UNW_TARGET ppc32 43 #define UNW_TARGET_PPC32 1 44 45 #define _U_TDEP_QP_TRUE 0 /* see libunwind-dynamic.h */ 46 47 /* 48 * This needs to be big enough to accommodate "struct cursor", while 49 * leaving some slack for future expansion. Changing this value will 50 * require recompiling all users of this library. Stack allocation is 51 * relatively cheap and unwind-state copying is relatively rare, so we want 52 * to err on making it rather too big than too small. 53 * 54 * To simplify this whole process, we are at least initially taking the 55 * tack that UNW_PPC32_* map straight across to the .eh_frame column register 56 * numbers. These register numbers come from gcc's source in 57 * gcc/config/rs6000/rs6000.h 58 * 59 * UNW_TDEP_CURSOR_LEN is in terms of unw_word_t size. Since we have 115 60 * elements in the loc array, each sized 2 * unw_word_t, plus the rest of 61 * the cursor struct, this puts us at about 2 * 115 + 40 = 270. Let's 62 * round that up to 280. 63 */ 64 65 #define UNW_TDEP_CURSOR_LEN 280 66 67 #if __WORDSIZE==32 68 typedef uint32_t unw_word_t; 69 typedef int32_t unw_sword_t; 70 #else 71 typedef uint64_t unw_word_t; 72 typedef int64_t unw_sword_t; 73 #endif 74 75 typedef long double unw_tdep_fpreg_t; 76 77 typedef enum 78 { 79 UNW_PPC32_R0, 80 UNW_PPC32_R1, /* called STACK_POINTER in gcc */ 81 UNW_PPC32_R2, 82 UNW_PPC32_R3, 83 UNW_PPC32_R4, 84 UNW_PPC32_R5, 85 UNW_PPC32_R6, 86 UNW_PPC32_R7, 87 UNW_PPC32_R8, 88 UNW_PPC32_R9, 89 UNW_PPC32_R10, 90 UNW_PPC32_R11, /* called STATIC_CHAIN in gcc */ 91 UNW_PPC32_R12, 92 UNW_PPC32_R13, 93 UNW_PPC32_R14, 94 UNW_PPC32_R15, 95 UNW_PPC32_R16, 96 UNW_PPC32_R17, 97 UNW_PPC32_R18, 98 UNW_PPC32_R19, 99 UNW_PPC32_R20, 100 UNW_PPC32_R21, 101 UNW_PPC32_R22, 102 UNW_PPC32_R23, 103 UNW_PPC32_R24, 104 UNW_PPC32_R25, 105 UNW_PPC32_R26, 106 UNW_PPC32_R27, 107 UNW_PPC32_R28, 108 UNW_PPC32_R29, 109 UNW_PPC32_R30, 110 UNW_PPC32_R31, /* called HARD_FRAME_POINTER in gcc */ 111 112 /* Count Register */ 113 UNW_PPC32_CTR = 32, 114 /* Fixed-Point Status and Control Register */ 115 UNW_PPC32_XER = 33, 116 /* Condition Register */ 117 UNW_PPC32_CCR = 34, 118 /* Machine State Register */ 119 //UNW_PPC32_MSR = 35, 120 /* MQ or SPR0, not part of generic Power, part of MPC601 */ 121 //UNW_PPC32_MQ = 36, 122 /* Link Register */ 123 UNW_PPC32_LR = 36, 124 /* Floating Pointer Status and Control Register */ 125 UNW_PPC32_FPSCR = 37, 126 127 UNW_PPC32_F0 = 48, 128 UNW_PPC32_F1, 129 UNW_PPC32_F2, 130 UNW_PPC32_F3, 131 UNW_PPC32_F4, 132 UNW_PPC32_F5, 133 UNW_PPC32_F6, 134 UNW_PPC32_F7, 135 UNW_PPC32_F8, 136 UNW_PPC32_F9, 137 UNW_PPC32_F10, 138 UNW_PPC32_F11, 139 UNW_PPC32_F12, 140 UNW_PPC32_F13, 141 UNW_PPC32_F14, 142 UNW_PPC32_F15, 143 UNW_PPC32_F16, 144 UNW_PPC32_F17, 145 UNW_PPC32_F18, 146 UNW_PPC32_F19, 147 UNW_PPC32_F20, 148 UNW_PPC32_F21, 149 UNW_PPC32_F22, 150 UNW_PPC32_F23, 151 UNW_PPC32_F24, 152 UNW_PPC32_F25, 153 UNW_PPC32_F26, 154 UNW_PPC32_F27, 155 UNW_PPC32_F28, 156 UNW_PPC32_F29, 157 UNW_PPC32_F30, 158 UNW_PPC32_F31, 159 160 UNW_TDEP_LAST_REG = UNW_PPC32_F31, 161 162 UNW_TDEP_IP = UNW_PPC32_LR, 163 UNW_TDEP_SP = UNW_PPC32_R1, 164 UNW_TDEP_EH = UNW_PPC32_R12 165 } 166 ppc32_regnum_t; 167 168 /* 169 * According to David Edelsohn, GNU gcc uses R3, R4, R5, and maybe R6 for 170 * passing parameters to exception handlers. 171 */ 172 173 #define UNW_TDEP_NUM_EH_REGS 4 174 175 typedef struct unw_tdep_save_loc 176 { 177 /* Additional target-dependent info on a save location. */ 178 /* ANDROID support update. */ 179 char __reserved; 180 /* End of ANDROID update. */ 181 } 182 unw_tdep_save_loc_t; 183 184 /* On ppc, we can directly use ucontext_t as the unwind context. */ 185 typedef ucontext_t unw_tdep_context_t; 186 187 /* XXX this is not ideal: an application should not be prevented from 188 using the "getcontext" name just because it's using libunwind. We 189 can't just use __getcontext() either, because that isn't exported 190 by glibc... */ 191 #define unw_tdep_getcontext(uc) (getcontext (uc), 0) 192 193 #include "libunwind-dynamic.h" 194 195 typedef struct 196 { 197 /* no ppc32-specific auxiliary proc-info */ 198 /* ANDROID support update. */ 199 char __reserved; 200 /* End of ANDROID update. */ 201 } 202 unw_tdep_proc_info_t; 203 204 #include "libunwind-common.h" 205 206 #define unw_tdep_is_fpreg UNW_ARCH_OBJ(is_fpreg) 207 extern int unw_tdep_is_fpreg (int); 208 209 #if defined(__cplusplus) || defined(c_plusplus) 210 } 211 #endif 212 213 #endif /* LIBUNWIND_H */ 214
