projects / deliverable / binutils-gdb.git / blame
| Commit | Line | Data |
|---|---|---|
| 0542c381 AC |
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/>. */ |
| 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. */ | |
| 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 L |
37 | /* Get XSAVE extended state xcr0 from core dump. */ |
| 38 | extern uint64_t i386_linux_core_read_xcr0 | |
| 39 | (struct gdbarch *gdbarch, struct target_ops *target, bfd *abfd); | |
| 40 | ||
| 90884b2b L |
41 | /* Linux target description. */ |
| 42 | extern struct target_desc *tdesc_i386_linux; | |
| 3a13a53b | 43 | extern struct target_desc *tdesc_i386_mmx_linux; |
| c131fcee L |
44 | extern struct target_desc *tdesc_i386_avx_linux; |
| 45 | ||
| 46 | /* Format of XSAVE extended state is: | |
| 47 | struct | |
| 48 | { | |
| 49 | fxsave_bytes[0..463] | |
| 50 | sw_usable_bytes[464..511] | |
| 51 | xstate_hdr_bytes[512..575] | |
| 52 | avx_bytes[576..831] | |
| 53 | future_state etc | |
| 54 | }; | |
| 55 | ||
| 56 | Same memory layout will be used for the coredump NT_X86_XSTATE | |
| 57 | representing the XSAVE extended state registers. | |
| 58 | ||
| 59 | The first 8 bytes of the sw_usable_bytes[464..467] is the OS enabled | |
| 60 | extended state mask, which is the same as the extended control register | |
| 61 | 0 (the XFEATURE_ENABLED_MASK register), XCR0. We can use this mask | |
| 62 | together with the mask saved in the xstate_hdr_bytes to determine what | |
| 63 | states the processor/OS supports and what state, used or initialized, | |
| 64 | the process/thread is in. */ | |
| 65 | #define I386_LINUX_XSAVE_XCR0_OFFSET 464 | |
| 90884b2b | 66 | |
| be0d2954 L |
67 | extern int i386_linux_gregset_reg_offset[]; |
| 68 | ||
| 8201327c | 69 | #endif /* i386-linux-tdep.h */ |