projects / deliverable / binutils-gdb.git / blame
| Commit | Line | Data |
|---|---|---|
| 93813b37 WT |
1 | /* Low-level siginfo manipulation for amd64. |
| 2 | ||
| b811d2c2 | 3 | Copyright (C) 2016-2020 Free Software Foundation, Inc. |
| 93813b37 WT |
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 | |
| 9 | the Free Software Foundation; either version 3 of the License, or | |
| 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 | |
| 18 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ | |
| 19 | ||
| 1a5c2598 TT |
20 | #ifndef NAT_AMD64_LINUX_SIGINFO_H |
| 21 | #define NAT_AMD64_LINUX_SIGINFO_H | |
| 93813b37 | 22 | |
| 1ca8f924 YQ |
23 | #include <signal.h> /* For siginfo_t. */ |
| 24 | ||
| 93813b37 WT |
25 | /* When GDB is built as a 64-bit application on Linux, the |
| 26 | PTRACE_GETSIGINFO data is always presented in 64-bit layout. Since | |
| 27 | debugging a 32-bit inferior with a 64-bit GDB should look the same | |
| 28 | as debugging it with a 32-bit GDB, we do the 32-bit <-> 64-bit | |
| 3f2f6cb5 WT |
29 | conversion in-place ourselves. |
| 30 | In other to make this conversion independent of the system where gdb | |
| 31 | is compiled the most complete version of the siginfo, named as native | |
| 32 | siginfo, is used internally as an intermediate step. | |
| 33 | ||
| 34 | Conversion using nat_siginfo is exemplified below: | |
| 35 | compat_siginfo_from_siginfo or compat_x32_siginfo_from_siginfo | |
| 36 | ||
| 37 | buffer (from the kernel) -> nat_siginfo -> 32 / X32 siginfo | |
| 38 | ||
| 39 | siginfo_from_compat_x32_siginfo or siginfo_from_compat_siginfo | |
| 40 | ||
| 41 | 32 / X32 siginfo -> nat_siginfo -> buffer (to the kernel) */ | |
| 42 | ||
| 93813b37 WT |
43 | |
| 44 | /* Kind of siginfo fixup to be performed. */ | |
| 45 | ||
| 46 | enum amd64_siginfo_fixup_mode | |
| 47 | { | |
| 48 | FIXUP_32 = 1, /* Fixup for 32bit. */ | |
| 49 | FIXUP_X32 = 2 /* Fixup for x32. */ | |
| 50 | }; | |
| 51 | ||
| 52 | /* Common code for performing the fixup of the siginfo. */ | |
| 53 | ||
| 54 | int amd64_linux_siginfo_fixup_common (siginfo_t *native, gdb_byte *inf, | |
| 55 | int direction, | |
| 56 | enum amd64_siginfo_fixup_mode mode); | |
| 57 | ||
| 1a5c2598 | 58 | #endif /* NAT_AMD64_LINUX_SIGINFO_H */ |