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1 | /* Target-dependent code for GNU/Linux x86. |
2 | ||
28e7fd62 | 3 | Copyright (C) 2002-2013 Free Software Foundation, Inc. |
8201327c MK |
4 | |
5 | This file is part of GDB. | |
6 | ||
7 | This program is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 9 | the Free Software Foundation; either version 3 of the License, or |
8201327c MK |
10 | (at your option) any later version. |
11 | ||
12 | This program is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
a9762ec7 | 18 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
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19 | |
20 | #ifndef I386_LINUX_TDEP_H | |
21 | #define I386_LINUX_TDEP_H | |
22 | ||
23 | /* The Linux kernel pretends there is an additional "orig_eax" | |
24 | register. Since GDB needs access to that register to be able to | |
25 | properly restart system calls when necessary (see | |
26 | i386-linux-tdep.c) we need our own versions of a number of | |
27 | functions that deal with GDB's register cache. */ | |
28 | ||
29 | /* Register number for the "orig_eax" pseudo-register. If this | |
30 | pseudo-register contains a value >= 0 it is interpreted as the | |
31 | system call number that the kernel is supposed to restart. */ | |
c131fcee | 32 | #define I386_LINUX_ORIG_EAX_REGNUM I386_AVX_NUM_REGS |
8201327c | 33 | |
60fac5b8 MK |
34 | /* Total number of registers for GNU/Linux. */ |
35 | #define I386_LINUX_NUM_REGS (I386_LINUX_ORIG_EAX_REGNUM + 1) | |
36 | ||
c131fcee | 37 | /* Get XSAVE extended state xcr0 from core dump. */ |
6df81a63 | 38 | extern uint64_t i386_linux_core_read_xcr0 (bfd *abfd); |
c131fcee | 39 | |
90884b2b L |
40 | /* Linux target description. */ |
41 | extern struct target_desc *tdesc_i386_linux; | |
3a13a53b | 42 | extern struct target_desc *tdesc_i386_mmx_linux; |
c131fcee L |
43 | extern struct target_desc *tdesc_i386_avx_linux; |
44 | ||
45 | /* Format of XSAVE extended state is: | |
46 | struct | |
47 | { | |
48 | fxsave_bytes[0..463] | |
49 | sw_usable_bytes[464..511] | |
50 | xstate_hdr_bytes[512..575] | |
51 | avx_bytes[576..831] | |
52 | future_state etc | |
53 | }; | |
54 | ||
55 | Same memory layout will be used for the coredump NT_X86_XSTATE | |
56 | representing the XSAVE extended state registers. | |
57 | ||
58 | The first 8 bytes of the sw_usable_bytes[464..467] is the OS enabled | |
59 | extended state mask, which is the same as the extended control register | |
60 | 0 (the XFEATURE_ENABLED_MASK register), XCR0. We can use this mask | |
61 | together with the mask saved in the xstate_hdr_bytes to determine what | |
62 | states the processor/OS supports and what state, used or initialized, | |
63 | the process/thread is in. */ | |
64 | #define I386_LINUX_XSAVE_XCR0_OFFSET 464 | |
90884b2b | 65 | |
be0d2954 L |
66 | extern int i386_linux_gregset_reg_offset[]; |
67 | ||
8201327c | 68 | #endif /* i386-linux-tdep.h */ |