1 /* i386 specific core note handling. 2 Copyright (C) 2007-2010 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 #define BACKEND i386_ 40 #include "libebl_CPU.h" 41 42 43 static const Ebl_Register_Location prstatus_regs[] = 44 { 45 #define GR(at, n, dwreg) \ 46 { .offset = at * 4, .regno = dwreg, .count = n, .bits = 32 } 47 #define SR(at, n, dwreg) \ 48 { .offset = at * 4, .regno = dwreg, .count = n, .bits = 16, .pad = 2 } 49 50 GR (0, 1, 3), /* %ebx */ 51 GR (1, 2, 1), /* %ecx-%edx */ 52 GR (3, 2, 6), /* %esi-%edi */ 53 GR (5, 1, 5), /* %ebp */ 54 GR (6, 1, 0), /* %eax */ 55 SR (7, 1, 43), /* %ds */ 56 SR (8, 1, 40), /* %es */ 57 SR (9, 1, 44), /* %fs */ 58 SR (10, 1, 45), /* %gs */ 59 /* 11, 1, orig_eax */ 60 GR (12, 1, 8), /* %eip */ 61 SR (13, 1, 41), /* %cs */ 62 GR (14, 1, 9), /* eflags */ 63 GR (15, 1, 4), /* %esp */ 64 SR (16, 1, 42), /* %ss */ 65 66 #undef GR 67 #undef SR 68 }; 69 #define PRSTATUS_REGS_SIZE (17 * 4) 70 71 #define ULONG uint32_t 72 #define PID_T int32_t 73 #define UID_T uint16_t 74 #define GID_T uint16_t 75 #define ALIGN_ULONG 4 76 #define ALIGN_PID_T 4 77 #define ALIGN_UID_T 2 78 #define ALIGN_GID_T 2 79 #define TYPE_ULONG ELF_T_WORD 80 #define TYPE_PID_T ELF_T_SWORD 81 #define TYPE_UID_T ELF_T_HALF 82 #define TYPE_GID_T ELF_T_HALF 83 84 #define PRSTATUS_REGSET_ITEMS \ 85 { \ 86 .name = "orig_eax", .type = ELF_T_SWORD, .format = 'd', \ 87 .offset = offsetof (struct EBLHOOK(prstatus), pr_reg) + (4 * 11), \ 88 .group = "register" \ 89 } 90 91 static const Ebl_Register_Location fpregset_regs[] = 92 { 93 { .offset = 0, .regno = 37, .count = 2, .bits = 32 }, /* fctrl-fstat */ 94 { .offset = 7 * 4, .regno = 11, .count = 8, .bits = 80 }, /* stN */ 95 }; 96 #define FPREGSET_SIZE 108 97 98 static const Ebl_Register_Location prxfpreg_regs[] = 99 { 100 { .offset = 0, .regno = 37, .count = 2, .bits = 16 }, /* fctrl-fstat */ 101 { .offset = 24, .regno = 39, .count = 1, .bits = 32 }, /* mxcsr */ 102 { .offset = 32, .regno = 11, .count = 8, .bits = 80, .pad = 6 }, /* stN */ 103 { .offset = 32 + 128, .regno = 21, .count = 8, .bits = 128 }, /* xmm */ 104 }; 105 106 #define EXTRA_NOTES \ 107 EXTRA_REGSET (NT_PRXFPREG, 512, prxfpreg_regs) \ 108 case NT_386_TLS: \ 109 return tls_info (nhdr->n_descsz, regs_offset, nregloc, reglocs, \ 110 nitems, items); \ 111 EXTRA_NOTES_IOPERM 112 113 static const Ebl_Core_Item tls_items[] = 114 { 115 { .type = ELF_T_WORD, .offset = 0x0, .format = 'd', .name = "index" }, 116 { .type = ELF_T_WORD, .offset = 0x4, .format = 'x', .name = "base" }, 117 { .type = ELF_T_WORD, .offset = 0x8, .format = 'x', .name = "limit" }, 118 { .type = ELF_T_WORD, .offset = 0xc, .format = 'x', .name = "flags" }, 119 }; 120 121 static int 122 tls_info (GElf_Word descsz, GElf_Word *regs_offset, 123 size_t *nregloc, const Ebl_Register_Location **reglocs, 124 size_t *nitems, const Ebl_Core_Item **items) 125 { 126 if (descsz % 16 != 0) 127 return 0; 128 129 *regs_offset = 0; 130 *nregloc = 0; 131 *reglocs = NULL; 132 *nitems = sizeof tls_items / sizeof tls_items[0]; 133 *items = tls_items; 134 return 1; 135 } 136 137 #include "x86_corenote.c" 138 #include "linux-core-note.c" 139
