1 /* S390-specific core note handling. 2 Copyright (C) 2012 Red Hat, Inc. 3 This file is part of elfutils. 4 5 This file is free software; you can redistribute it and/or modify 6 it under the terms of either 7 8 * the GNU Lesser General Public License as published by the Free 9 Software Foundation; either version 3 of the License, or (at 10 your option) any later version 11 12 or 13 14 * the GNU General Public License as published by the Free 15 Software Foundation; either version 2 of the License, or (at 16 your option) any later version 17 18 or both in parallel, as here. 19 20 elfutils is distributed in the hope that it will be useful, but 21 WITHOUT ANY WARRANTY; without even the implied warranty of 22 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 23 General Public License for more details. 24 25 You should have received copies of the GNU General Public License and 26 the GNU Lesser General Public License along with this program. If 27 not, see <http://www.gnu.org/licenses/>. */ 28 29 #ifdef HAVE_CONFIG_H 30 # include <config.h> 31 #endif 32 33 #include <elf.h> 34 #include <inttypes.h> 35 #include <stddef.h> 36 #include <stdio.h> 37 #include <sys/time.h> 38 39 #ifndef BITS 40 # define BITS 32 41 # define BACKEND s390_ 42 #else 43 # define BITS 64 44 # define BACKEND s390x_ 45 #endif 46 #include "libebl_CPU.h" 47 48 static const Ebl_Register_Location prstatus_regs[] = 49 { 50 #define GR(at, n, dwreg, b...) \ 51 { .offset = at * BITS/8, .regno = dwreg, .count = n, .bits = b } 52 53 GR ( 0, 1, 64, BITS), /* pswm */ 54 GR ( 1, 1, 65, BITS, .pc_register = true ), /* pswa */ 55 GR ( 2, 16, 0, BITS), /* r0-r15 */ 56 GR (18, 16, 48, 32), /* ar0-ar15 */ 57 58 #undef GR 59 }; 60 61 /* orig_r2 is at offset (BITS == 32 ? 34 * 4 : 26 * 8). */ 62 #define PRSTATUS_REGS_SIZE (BITS / 8 * (BITS == 32 ? 35 : 27)) 63 64 static const Ebl_Register_Location fpregset_regs[] = 65 { 66 #define FPR(at, n, dwreg) \ 67 { .offset = at * 64/8, .regno = dwreg, .count = n, .bits = 64 } 68 69 /* fpc is at offset 0, see fpregset_items, it has no assigned DWARF regno. 70 Bytes at offsets 4 to 7 are unused. */ 71 FPR (1 + 0, 1, 16), /* f0 */ 72 FPR (1 + 1, 1, 20), /* f1 */ 73 FPR (1 + 2, 1, 17), /* f2 */ 74 FPR (1 + 3, 1, 21), /* f3 */ 75 FPR (1 + 4, 1, 18), /* f4 */ 76 FPR (1 + 5, 1, 22), /* f5 */ 77 FPR (1 + 6, 1, 19), /* f6 */ 78 FPR (1 + 7, 1, 23), /* f7 */ 79 FPR (1 + 8, 1, 24), /* f8 */ 80 FPR (1 + 9, 1, 28), /* f9 */ 81 FPR (1 + 10, 1, 25), /* f10 */ 82 FPR (1 + 11, 1, 29), /* f11 */ 83 FPR (1 + 12, 1, 26), /* f12 */ 84 FPR (1 + 13, 1, 30), /* f13 */ 85 FPR (1 + 14, 1, 27), /* f14 */ 86 FPR (1 + 15, 1, 31), /* f15 */ 87 88 #undef FPR 89 }; 90 91 static const Ebl_Core_Item fpregset_items[] = 92 { 93 { 94 .name = "fpc", .group = "register", .offset = 0, .type = ELF_T_WORD, 95 .format = 'x', 96 }, 97 }; 98 99 /* Do not set FPREGSET_SIZE so that we can supply fpregset_items. */ 100 #define EXTRA_NOTES_FPREGSET \ 101 EXTRA_REGSET_ITEMS (NT_FPREGSET, 17 * 8, fpregset_regs, fpregset_items) 102 103 #if BITS == 32 104 # define ULONG uint32_t 105 # define ALIGN_ULONG 4 106 # define TYPE_ULONG ELF_T_WORD 107 # define TYPE_LONG ELF_T_SWORD 108 # define UID_T uint16_t 109 # define GID_T uint16_t 110 # define ALIGN_UID_T 2 111 # define ALIGN_GID_T 2 112 # define TYPE_UID_T ELF_T_HALF 113 # define TYPE_GID_T ELF_T_HALF 114 #else 115 # define ULONG uint64_t 116 # define ALIGN_ULONG 8 117 # define TYPE_ULONG ELF_T_XWORD 118 # define TYPE_LONG ELF_T_SXWORD 119 # define UID_T uint32_t 120 # define GID_T uint32_t 121 # define ALIGN_UID_T 4 122 # define ALIGN_GID_T 4 123 # define TYPE_UID_T ELF_T_WORD 124 # define TYPE_GID_T ELF_T_WORD 125 #endif 126 #define PID_T int32_t 127 #define ALIGN_PID_T 4 128 #define TYPE_PID_T ELF_T_SWORD 129 /* s390 psw_compat_t has alignment 8 bytes where it is inherited from. */ 130 #define ALIGN_PR_REG 8 131 132 #define PRSTATUS_REGSET_ITEMS \ 133 { \ 134 .name = "orig_r2", .type = TYPE_LONG, .format = 'd', \ 135 .offset = offsetof (struct EBLHOOK(prstatus), \ 136 pr_reg[BITS == 32 ? 34 : 26]), \ 137 .group = "register" \ 138 } 139 140 #if BITS == 32 141 142 static const Ebl_Core_Item high_regs_items[] = 143 { 144 #define HR(n) \ 145 { \ 146 .name = "high_r" #n , .group = "register", .offset = (n) * 4, \ 147 .type = ELF_T_WORD, .format = 'x', \ 148 } 149 150 /* Upper halves of r0-r15 are stored here. 151 FIXME: They are currently not combined with the r0-r15 lower halves. */ 152 HR (0), HR (1), HR (2), HR (3), HR (4), HR (5), HR (6), HR (7), 153 HR (8), HR (9), HR (10), HR (11), HR (12), HR (13), HR (14), HR (15) 154 155 #undef HR 156 }; 157 158 #define EXTRA_NOTES_HIGH_GPRS \ 159 EXTRA_ITEMS (NT_S390_HIGH_GPRS, 16 * 4, high_regs_items) 160 161 #else /* BITS == 64 */ 162 163 #define EXTRA_NOTES_HIGH_GPRS 164 165 #endif /* BITS == 64 */ 166 167 static const Ebl_Core_Item last_break_items[] = 168 { 169 { 170 .name = "last_break", .group = "system", .offset = BITS == 32 ? 4 : 0, 171 .type = BITS == 32 ? ELF_T_WORD : ELF_T_XWORD, .format = 'x', 172 }, 173 }; 174 175 static const Ebl_Core_Item system_call_items[] = 176 { 177 { 178 .name = "system_call", .group = "system", .offset = 0, .type = ELF_T_WORD, 179 .format = 'd', 180 }, 181 }; 182 183 #define EXTRA_NOTES \ 184 EXTRA_NOTES_FPREGSET \ 185 EXTRA_NOTES_HIGH_GPRS \ 186 EXTRA_ITEMS (NT_S390_LAST_BREAK, 8, last_break_items) \ 187 EXTRA_ITEMS (NT_S390_SYSTEM_CALL, 4, system_call_items) 188 189 #include "linux-core-note.c" 190
