projects / thirdparty / binutils-gdb.git / blame
| Commit | Line | Data |
|---|---|---|
| c906108c SS |
1 | /* Definitions to make GDB run on an Alpha box under Linux. The |
| 2 | definitions here are used when the _target_ system is running Linux. | |
| 3 | Copyright 1996 Free Software Foundation, Inc. | |
| 4 | ||
| c5aa993b JM |
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 2 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, write to the Free Software | |
| 19 | Foundation, Inc., 59 Temple Place - Suite 330, | |
| 20 | Boston, MA 02111-1307, USA. */ | |
| c906108c SS |
21 | |
| 22 | #ifndef TM_LINUXALPHA_H | |
| 23 | #define TM_LINUXALPHA_H | |
| 24 | ||
| 25 | #include "alpha/tm-alpha.h" | |
| 26 | ||
| 27 | /* Are we currently handling a signal ? */ | |
| 28 | ||
| 29 | extern long alpha_linux_sigtramp_offset PARAMS ((CORE_ADDR)); | |
| 30 | #undef IN_SIGTRAMP | |
| 31 | #define IN_SIGTRAMP(pc, name) (alpha_linux_sigtramp_offset (pc) >= 0) | |
| 32 | ||
| 33 | /* Get start and end address of sigtramp handler. */ | |
| 34 | ||
| 35 | #define SIGTRAMP_START(pc) (pc - alpha_linux_sigtramp_offset (pc)) | |
| 36 | #define SIGTRAMP_END(pc) (SIGTRAMP_START(pc) + 3*4) | |
| 37 | ||
| 38 | ||
| 39 | /* Number of traps that happen between exec'ing the shell to run an | |
| 40 | inferior, and when we finally get to the inferior code. This is 2 | |
| 41 | on Linux and most implementations. */ | |
| 42 | ||
| 43 | #undef START_INFERIOR_TRAPS_EXPECTED | |
| 44 | #define START_INFERIOR_TRAPS_EXPECTED 2 | |
| 45 | ||
| 46 | /* Return TRUE if procedure descriptor PROC is a procedure descriptor | |
| 47 | that refers to a dynamically generated sigtramp function. */ | |
| 48 | ||
| 49 | #undef PROC_DESC_IS_DYN_SIGTRAMP | |
| 50 | #define PROC_SIGTRAMP_MAGIC 0x0e0f0f0f | |
| 51 | #define PROC_DESC_IS_DYN_SIGTRAMP(proc) ((proc)->pdr.isym \ | |
| 52 | == PROC_SIGTRAMP_MAGIC) | |
| 53 | #undef SET_PROC_DESC_IS_DYN_SIGTRAMP | |
| 54 | #define SET_PROC_DESC_IS_DYN_SIGTRAMP(proc) ((proc)->pdr.isym \ | |
| 55 | = PROC_SIGTRAMP_MAGIC) | |
| 56 | ||
| 57 | /* If PC is inside a dynamically generated sigtramp function, return | |
| 58 | how many bytes the program counter is beyond the start of that | |
| 59 | function. Otherwise, return a negative value. */ | |
| 60 | ||
| 61 | #undef DYNAMIC_SIGTRAMP_OFFSET | |
| 62 | #define DYNAMIC_SIGTRAMP_OFFSET(pc) (alpha_linux_sigtramp_offset (pc)) | |
| 63 | ||
| 64 | /* Translate a signal handler frame into the address of the sigcontext | |
| 65 | structure. */ | |
| 66 | ||
| 67 | #undef SIGCONTEXT_ADDR | |
| 68 | #define SIGCONTEXT_ADDR(frame) ((frame)->frame - 0x298) | |
| 69 | ||
| 70 | /* If FRAME refers to a sigtramp frame, return the address of the next frame. | |
| 71 | ||
| 72 | Under Linux, sigtramp handlers have dynamically generated procedure | |
| 73 | descriptors that make this hack unnecessary. */ | |
| 74 | ||
| 75 | #undef FRAME_PAST_SIGTRAMP_FRAME | |
| 76 | #define FRAME_PAST_SIGTRAMP_FRAME(frame, pc) (0) | |
| 77 | ||
| c2d11a7d | 78 | #include "tm-linux.h" |
| c906108c SS |
79 | |
| 80 | #endif /* TM_LINUXALPHA_H */ |