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0542c381 AC |
1 | /* Target-dependent code for GNU/Linux x86. |
2 | ||
42a4f53d | 3 | Copyright (C) 2002-2019 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/>. */ |
8201327c MK |
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. */ | |
51547df6 | 32 | #define I386_LINUX_ORIG_EAX_REGNUM (I386_PKRU_REGNUM + 1) |
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 | |
012b3a21 WT |
40 | /* Handle and display information related to the MPX bound violation |
41 | to the user. */ | |
42 | extern void i386_linux_handle_segmentation_fault (struct gdbarch *gdbarch, | |
43 | struct ui_out *uiout); | |
44 | ||
35b4818d YQ |
45 | /* Return the target description according to XCR0. */ |
46 | extern const struct target_desc *i386_linux_read_description (uint64_t xcr0); | |
c131fcee L |
47 | |
48 | /* Format of XSAVE extended state is: | |
49 | struct | |
50 | { | |
51 | fxsave_bytes[0..463] | |
52 | sw_usable_bytes[464..511] | |
53 | xstate_hdr_bytes[512..575] | |
54 | avx_bytes[576..831] | |
1dbcd68c | 55 | mpx_bytes [960..1032] |
01f9f808 MS |
56 | avx512_k_regs[1088..1152] |
57 | avx512_zmmh_regs0-7[1153..1407] | |
58 | avx512_zmmh_regs8-15[1408..1663] | |
59 | avx512_zmm_regs16-31[1664..2687] | |
51547df6 | 60 | pkru[2688..2752] |
c131fcee L |
61 | future_state etc |
62 | }; | |
63 | ||
64 | Same memory layout will be used for the coredump NT_X86_XSTATE | |
65 | representing the XSAVE extended state registers. | |
66 | ||
67 | The first 8 bytes of the sw_usable_bytes[464..467] is the OS enabled | |
68 | extended state mask, which is the same as the extended control register | |
69 | 0 (the XFEATURE_ENABLED_MASK register), XCR0. We can use this mask | |
70 | together with the mask saved in the xstate_hdr_bytes to determine what | |
71 | states the processor/OS supports and what state, used or initialized, | |
72 | the process/thread is in. */ | |
73 | #define I386_LINUX_XSAVE_XCR0_OFFSET 464 | |
90884b2b | 74 | |
be0d2954 L |
75 | extern int i386_linux_gregset_reg_offset[]; |
76 | ||
190b495d WT |
77 | /* Return x86 siginfo type. */ |
78 | extern struct type *x86_linux_get_siginfo_type (struct gdbarch *gdbarch); | |
79 | ||
8201327c | 80 | #endif /* i386-linux-tdep.h */ |