1d5285b23e7e515ccb6afdb82fae32a608bb28a2fPetr Machata/* 2d5285b23e7e515ccb6afdb82fae32a608bb28a2fPetr Machata * This file is part of ltrace. 3a0093ca43cf40d7e5f6cebeb64156062d2de46d9Petr Machata * Copyright (C) 2012,2013,2014 Petr Machata 4d5285b23e7e515ccb6afdb82fae32a608bb28a2fPetr Machata * Copyright (C) 2006 Paul Gilliam 5d5285b23e7e515ccb6afdb82fae32a608bb28a2fPetr Machata * Copyright (C) 2002,2004 Juan Cespedes 6d5285b23e7e515ccb6afdb82fae32a608bb28a2fPetr Machata * 7d5285b23e7e515ccb6afdb82fae32a608bb28a2fPetr Machata * This program is free software; you can redistribute it and/or 8d5285b23e7e515ccb6afdb82fae32a608bb28a2fPetr Machata * modify it under the terms of the GNU General Public License as 9d5285b23e7e515ccb6afdb82fae32a608bb28a2fPetr Machata * published by the Free Software Foundation; either version 2 of the 10d5285b23e7e515ccb6afdb82fae32a608bb28a2fPetr Machata * License, or (at your option) any later version. 11d5285b23e7e515ccb6afdb82fae32a608bb28a2fPetr Machata * 12d5285b23e7e515ccb6afdb82fae32a608bb28a2fPetr Machata * This program is distributed in the hope that it will be useful, but 13d5285b23e7e515ccb6afdb82fae32a608bb28a2fPetr Machata * WITHOUT ANY WARRANTY; without even the implied warranty of 14d5285b23e7e515ccb6afdb82fae32a608bb28a2fPetr Machata * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 15d5285b23e7e515ccb6afdb82fae32a608bb28a2fPetr Machata * General Public License for more details. 16d5285b23e7e515ccb6afdb82fae32a608bb28a2fPetr Machata * 17d5285b23e7e515ccb6afdb82fae32a608bb28a2fPetr Machata * You should have received a copy of the GNU General Public License 18d5285b23e7e515ccb6afdb82fae32a608bb28a2fPetr Machata * along with this program; if not, write to the Free Software 19d5285b23e7e515ccb6afdb82fae32a608bb28a2fPetr Machata * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 20d5285b23e7e515ccb6afdb82fae32a608bb28a2fPetr Machata * 02110-1301 USA 21d5285b23e7e515ccb6afdb82fae32a608bb28a2fPetr Machata */ 2250b96039ebfc60825bb7afb8ab8f56bb87aeb67bPetr Machata#ifndef LTRACE_PPC_ARCH_H 2350b96039ebfc60825bb7afb8ab8f56bb87aeb67bPetr Machata#define LTRACE_PPC_ARCH_H 2450b96039ebfc60825bb7afb8ab8f56bb87aeb67bPetr Machata 2550b96039ebfc60825bb7afb8ab8f56bb87aeb67bPetr Machata#include <gelf.h> 2650b96039ebfc60825bb7afb8ab8f56bb87aeb67bPetr Machata 275bfb061c4c7cfac6e1882a586cf36c849d95fceaJuan Cespedes#define BREAKPOINT_VALUE { 0x7f, 0xe0, 0x00, 0x08 } 28f1bfe203f5f1c0e11a614f9d593a68406f5cb47eJuan Cespedes#define BREAKPOINT_LENGTH 4 29f1bfe203f5f1c0e11a614f9d593a68406f5cb47eJuan Cespedes#define DECR_PC_AFTER_BREAK 0 30d914a206a11cc1011a45f00674b1e16988fae77fJuan Cespedes 31d914a206a11cc1011a45f00674b1e16988fae77fJuan Cespedes#define LT_ELFCLASS ELFCLASS32 32d914a206a11cc1011a45f00674b1e16988fae77fJuan Cespedes#define LT_ELF_MACHINE EM_PPC 33b3f8fef12fccb0914b7b28725f42192c279d31c9Petr Machata 3476c61f15d7989bf7adffed2e46a44c34a80bd927Paul Gilliam#ifdef __powerpc64__ // Says 'ltrace' is 64 bits, says nothing about target. 359a2ad351a1c3215dc596ff3e2e3fd4bc24445a6bIan Wienand#define LT_ELFCLASS2 ELFCLASS64 369a2ad351a1c3215dc596ff3e2e3fd4bc24445a6bIan Wienand#define LT_ELF_MACHINE2 EM_PPC64 37b3f8fef12fccb0914b7b28725f42192c279d31c9Petr Machata#define ARCH_SUPPORTS_OPD 387003feea8035a3c4ee661dc2556d158e9ba41d39Petr Machata#endif 399a2ad351a1c3215dc596ff3e2e3fd4bc24445a6bIan Wienand 40693dfad9c1b121cf079a3082866daa2225df1797Petr Machata#define ARCH_HAVE_SW_SINGLESTEP 4150b96039ebfc60825bb7afb8ab8f56bb87aeb67bPetr Machata#define ARCH_HAVE_ADD_PLT_ENTRY 42fa844db00b61b9f61c9ae8c6f4165aa5fff3a5d7Petr Machata#define ARCH_HAVE_ADD_FUNC_ENTRY 43c67a6e62bc7e95f7f181a51c5b314ef10a6e231ePetr Machata#define ARCH_HAVE_TRANSLATE_ADDRESS 44d95733284377c0b186ba0c81a1158edc2b913e45Petr Machata#define ARCH_HAVE_DYNLINK_DONE 4554737daf1c51ec826fcabc8189a7ff891f29d59bPetr Machata#define ARCH_HAVE_FETCH_ARG 46d5285b23e7e515ccb6afdb82fae32a608bb28a2fPetr Machata#define ARCH_ENDIAN_BIG 47af9e30ec852a24f52a36775154ff79cc4be0193dPetr Machata#define ARCH_HAVE_SIZEOF 48af9e30ec852a24f52a36775154ff79cc4be0193dPetr Machata#define ARCH_HAVE_ALIGNOF 4950b96039ebfc60825bb7afb8ab8f56bb87aeb67bPetr Machata 5050b96039ebfc60825bb7afb8ab8f56bb87aeb67bPetr Machatastruct library_symbol; 51abfe118271cd45581f33f71b0cf0fddc3a2e1b05Petr Machata 52abfe118271cd45581f33f71b0cf0fddc3a2e1b05Petr Machata#define ARCH_HAVE_LTELF_DATA 53e67635d6dcecb0f44448a5329d69fd0de74ebabaPetr Machatastruct arch_ltelf_data { 54e67635d6dcecb0f44448a5329d69fd0de74ebabaPetr Machata GElf_Addr plt_stub_vma; 5550b96039ebfc60825bb7afb8ab8f56bb87aeb67bPetr Machata struct library_symbol *stubs; 56b1492dfaca6882fa0798b549e0557c7dec6b7e9cPetr Machata Elf_Data *opd_data; 57b1492dfaca6882fa0798b549e0557c7dec6b7e9cPetr Machata GElf_Addr opd_base; 58b1492dfaca6882fa0798b549e0557c7dec6b7e9cPetr Machata GElf_Xword opd_size; 59d95733284377c0b186ba0c81a1158edc2b913e45Petr Machata int secure_plt; 6073b85aadbf377541ac336914e5ff8ec521226a97Petr Machata 6173b85aadbf377541ac336914e5ff8ec521226a97Petr Machata Elf_Data *reladyn; 6273b85aadbf377541ac336914e5ff8ec521226a97Petr Machata size_t reladyn_count; 63d95733284377c0b186ba0c81a1158edc2b913e45Petr Machata}; 64d95733284377c0b186ba0c81a1158edc2b913e45Petr Machata 65d95733284377c0b186ba0c81a1158edc2b913e45Petr Machata#define ARCH_HAVE_LIBRARY_DATA 66d95733284377c0b186ba0c81a1158edc2b913e45Petr Machatastruct arch_library_data { 677e26bd32a1a2269c193a6ef100ed8cd3127f3dc2Petr Machata GElf_Addr pltgot_addr; 68d95733284377c0b186ba0c81a1158edc2b913e45Petr Machata int bss_plt_prelinked; 69e67635d6dcecb0f44448a5329d69fd0de74ebabaPetr Machata}; 7050b96039ebfc60825bb7afb8ab8f56bb87aeb67bPetr Machata 71b64b5c7b6f4a368ccaf60507090192845221a3bePetr Machataenum ppc64_plt_type { 72fbd9742d03154ca842eeae8f6a32e35c1e3c8326Petr Machata /* Either a non-PLT symbol, or PPC32 symbol. */ 73fbd9742d03154ca842eeae8f6a32e35c1e3c8326Petr Machata PPC_DEFAULT = 0, 74fbd9742d03154ca842eeae8f6a32e35c1e3c8326Petr Machata 75585f60f7b171a391fbd5149f3d397d192168a67cPetr Machata /* PPC64 STUB, never resolved. */ 76585f60f7b171a391fbd5149f3d397d192168a67cPetr Machata PPC64_PLT_STUB, 77b64b5c7b6f4a368ccaf60507090192845221a3bePetr Machata 78b64b5c7b6f4a368ccaf60507090192845221a3bePetr Machata /* Unresolved PLT symbol (.plt contains PLT address). */ 79585f60f7b171a391fbd5149f3d397d192168a67cPetr Machata PPC_PLT_UNRESOLVED, 80b64b5c7b6f4a368ccaf60507090192845221a3bePetr Machata 81b64b5c7b6f4a368ccaf60507090192845221a3bePetr Machata /* Resolved PLT symbol. The corresponding .plt slot contained 82b64b5c7b6f4a368ccaf60507090192845221a3bePetr Machata * target address, which was changed to the address of 83b64b5c7b6f4a368ccaf60507090192845221a3bePetr Machata * corresponding PLT entry. The original is now saved in 841b4c76e739f36a01ca4cc07a1df5aa5e970279e6Petr Machata * RESOLVED_VALUE. */ 85585f60f7b171a391fbd5149f3d397d192168a67cPetr Machata PPC_PLT_RESOLVED, 8673b85aadbf377541ac336914e5ff8ec521226a97Petr Machata 8773b85aadbf377541ac336914e5ff8ec521226a97Petr Machata /* Very similar to PPC_PLT_UNRESOLVED, but for JMP_IREL 8873b85aadbf377541ac336914e5ff8ec521226a97Petr Machata * slots. */ 8973b85aadbf377541ac336914e5ff8ec521226a97Petr Machata PPC_PLT_IRELATIVE, 90a0093ca43cf40d7e5f6cebeb64156062d2de46d9Petr Machata 91a0093ca43cf40d7e5f6cebeb64156062d2de46d9Petr Machata /* Transitional state before the breakpoint is enabled. */ 92a0093ca43cf40d7e5f6cebeb64156062d2de46d9Petr Machata PPC_PLT_NEED_UNRESOLVE, 93b64b5c7b6f4a368ccaf60507090192845221a3bePetr Machata}; 94b64b5c7b6f4a368ccaf60507090192845221a3bePetr Machata 9524c6e9daa8d89e13c19fc3f9a475ba7913d7d9c8Petr Machata#define ARCH_HAVE_LIBRARY_SYMBOL_DATA 96a0093ca43cf40d7e5f6cebeb64156062d2de46d9Petr Machatastruct ppc_unresolve_data; 97b64b5c7b6f4a368ccaf60507090192845221a3bePetr Machatastruct arch_library_symbol_data { 98b64b5c7b6f4a368ccaf60507090192845221a3bePetr Machata enum ppc64_plt_type type; 99a0093ca43cf40d7e5f6cebeb64156062d2de46d9Petr Machata 100a0093ca43cf40d7e5f6cebeb64156062d2de46d9Petr Machata /* State Contents 101a0093ca43cf40d7e5f6cebeb64156062d2de46d9Petr Machata * 102a0093ca43cf40d7e5f6cebeb64156062d2de46d9Petr Machata * PPC_DEFAULT N/A 103a0093ca43cf40d7e5f6cebeb64156062d2de46d9Petr Machata * PPC64_PLT_STUB N/A 104a0093ca43cf40d7e5f6cebeb64156062d2de46d9Petr Machata * PPC_PLT_UNRESOLVED PLT entry address. 105a0093ca43cf40d7e5f6cebeb64156062d2de46d9Petr Machata * PPC_PLT_IRELATIVE Likewise. 106a0093ca43cf40d7e5f6cebeb64156062d2de46d9Petr Machata * PPC_PLT_RESOLVED The original value the slot was resolved to. 107a0093ca43cf40d7e5f6cebeb64156062d2de46d9Petr Machata * PPC_PLT_NEED_UNRESOLVE DATA. 108a0093ca43cf40d7e5f6cebeb64156062d2de46d9Petr Machata */ 109a0093ca43cf40d7e5f6cebeb64156062d2de46d9Petr Machata union { 110a0093ca43cf40d7e5f6cebeb64156062d2de46d9Petr Machata GElf_Addr resolved_value; 111a0093ca43cf40d7e5f6cebeb64156062d2de46d9Petr Machata struct ppc_unresolve_data *data; 112a0093ca43cf40d7e5f6cebeb64156062d2de46d9Petr Machata }; 11358b2d0fd5deed5f33fbd47a6b6e5c109f43908b5Petr Machata 11458b2d0fd5deed5f33fbd47a6b6e5c109f43908b5Petr Machata /* Address of corresponding slot in .plt. */ 11558b2d0fd5deed5f33fbd47a6b6e5c109f43908b5Petr Machata GElf_Addr plt_slot_addr; 116b64b5c7b6f4a368ccaf60507090192845221a3bePetr Machata}; 117b64b5c7b6f4a368ccaf60507090192845221a3bePetr Machata 118abfe118271cd45581f33f71b0cf0fddc3a2e1b05Petr Machata#define ARCH_HAVE_BREAKPOINT_DATA 119b64b5c7b6f4a368ccaf60507090192845221a3bePetr Machatastruct arch_breakpoint_data { 12073b85aadbf377541ac336914e5ff8ec521226a97Petr Machata /* This is where we hide symbol for IRELATIVE breakpoint for 12173b85aadbf377541ac336914e5ff8ec521226a97Petr Machata * the first time that it hits. This is NULL for normal 12273b85aadbf377541ac336914e5ff8ec521226a97Petr Machata * breakpoints. */ 12373b85aadbf377541ac336914e5ff8ec521226a97Petr Machata struct library_symbol *irel_libsym; 124b64b5c7b6f4a368ccaf60507090192845221a3bePetr Machata}; 125b64b5c7b6f4a368ccaf60507090192845221a3bePetr Machata 1266b314183200b1462ef4aad6e04fda72f3f6b0d87Petr Machata#define ARCH_HAVE_PROCESS_DATA 1276b314183200b1462ef4aad6e04fda72f3f6b0d87Petr Machatastruct arch_process_data { 1286b314183200b1462ef4aad6e04fda72f3f6b0d87Petr Machata /* Breakpoint that hits when the dynamic linker is about to 1296b314183200b1462ef4aad6e04fda72f3f6b0d87Petr Machata * update a .plt slot. NULL before that address is known. */ 1306b314183200b1462ef4aad6e04fda72f3f6b0d87Petr Machata struct breakpoint *dl_plt_update_bp; 1316b314183200b1462ef4aad6e04fda72f3f6b0d87Petr Machata 1326b314183200b1462ef4aad6e04fda72f3f6b0d87Petr Machata /* PLT update breakpoint looks here for the handler. */ 1336b314183200b1462ef4aad6e04fda72f3f6b0d87Petr Machata struct process_stopping_handler *handler; 1346b314183200b1462ef4aad6e04fda72f3f6b0d87Petr Machata}; 1356b314183200b1462ef4aad6e04fda72f3f6b0d87Petr Machata 13650b96039ebfc60825bb7afb8ab8f56bb87aeb67bPetr Machata#endif /* LTRACE_PPC_ARCH_H */ 137