| 1 | /*
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| 2 | * Copyright (c) 2011 Jiri Svoboda
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| 3 | * All rights reserved.
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| 4 | *
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| 5 | * Redistribution and use in source and binary forms, with or without
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| 6 | * modification, are permitted provided that the following conditions
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| 7 | * are met:
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| 8 | *
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| 9 | * - Redistributions of source code must retain the above copyright
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| 10 | * notice, this list of conditions and the following disclaimer.
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| 11 | * - Redistributions in binary form must reproduce the above copyright
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| 12 | * notice, this list of conditions and the following disclaimer in the
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| 13 | * documentation and/or other materials provided with the distribution.
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| 14 | * - The name of the author may not be used to endorse or promote products
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| 15 | * derived from this software without specific prior written permission.
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| 16 | *
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| 17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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| 18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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| 19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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| 20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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| 21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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| 22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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| 23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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| 24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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| 25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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| 26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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| 27 | */
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| 28 |
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| 29 | /** @addtogroup libcamd64
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| 30 | * @{
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| 31 | */
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| 32 | /** @file Definitions needed to write core files in Linux-ELF format.
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| 33 | */
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| 34 |
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| 35 | #ifndef LIBC_amd64_ELF_LINUX_H_
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| 36 | #define LBIC_amd64_ELF_LINUX_H_
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| 37 |
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| 38 | #include <libarch/istate.h>
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| 39 | #include <sys/types.h>
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| 40 |
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| 41 | /** Linux kernel struct pt_regs structure.
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| 42 | *
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| 43 | * We need this to save register state to a core file in Linux format
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| 44 | * (readable by GDB configured for Linux target).
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| 45 | */
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| 46 | typedef struct {
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| 47 | uint64_t r15;
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| 48 | uint64_t r14;
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| 49 | uint64_t r13;
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| 50 | uint64_t r12;
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| 51 | uint64_t rbp;
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| 52 | uint64_t rbx;
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| 53 | uint64_t r11;
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| 54 | uint64_t r10;
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| 55 | uint64_t r9;
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| 56 | uint64_t r8;
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| 57 | uint64_t rax;
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| 58 | uint64_t rcx;
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| 59 | uint64_t rdx;
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| 60 | uint64_t rsi;
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| 61 | uint64_t rdi;
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| 62 | uint64_t old_rax;
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| 63 | uint64_t rip;
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| 64 | uint64_t cs;
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| 65 | uint64_t rflags;
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| 66 | uint64_t rsp;
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| 67 | uint64_t ss;
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| 68 |
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| 69 | /*
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| 70 | * The following registers need to be part of elf_regs_t.
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| 71 | * Unfortunately, we don't have any information about them in our
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| 72 | * istate_t.
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| 73 | */
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| 74 | uint64_t unused_fs_base;
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| 75 | uint64_t unused_gs_base;
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| 76 | uint64_t unused_ds;
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| 77 | uint64_t unused_es;
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| 78 | uint64_t unused_fs;
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| 79 | uint64_t unused_gs;
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| 80 | } elf_regs_t;
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| 81 |
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| 82 | /** Convert istate_t to elf_regs_t. */
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| 83 | static inline void istate_to_elf_regs(istate_t *istate, elf_regs_t *elf_regs)
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| 84 | {
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| 85 | elf_regs->r15 = istate->r15;
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| 86 | elf_regs->r14 = istate->r14;
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| 87 | elf_regs->r13 = istate->r13;
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| 88 | elf_regs->r12 = istate->r12;
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| 89 | elf_regs->rbp = istate->rbp;
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| 90 | elf_regs->rbx = istate->rbx;
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| 91 | elf_regs->r11 = istate->r11;
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| 92 | elf_regs->r10 = istate->r10;
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| 93 | elf_regs->r9 = istate->r9;
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| 94 | elf_regs->r8 = istate->r8;
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| 95 | elf_regs->rax = istate->rax;
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| 96 | elf_regs->rcx = istate->rcx;
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| 97 | elf_regs->rdx = istate->rdx;
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| 98 | elf_regs->rsi = istate->rsi;
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| 99 | elf_regs->rdi = istate->rdi;
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| 100 | elf_regs->rip = istate->rip;
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| 101 | elf_regs->cs = istate->cs;
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| 102 | elf_regs->rflags = istate->rflags;
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| 103 | elf_regs->rsp = istate->rsp;
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| 104 | elf_regs->ss = istate->ss;
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| 105 |
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| 106 | /*
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| 107 | * Reset the registers for which there is not enough info in istate_t.
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| 108 | */
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| 109 | elf_regs->unused_fs_base = 0;
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| 110 | elf_regs->unused_gs_base = 0;
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| 111 | elf_regs->unused_ds = 0;
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| 112 | elf_regs->unused_es = 0;
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| 113 | elf_regs->unused_fs = 0;
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| 114 | elf_regs->unused_gs = 0;
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| 115 | }
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| 116 |
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| 117 | #endif
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| 118 |
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| 119 | /** @}
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| 120 | */
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