projects / deliverable / binutils-gdb.git / blame
| Commit | Line | Data |
|---|---|---|
| dd3b648e RP |
1 | /* Definitions to make GDB run on an ARM under RISCiX (4.3bsd). |
| 2 | Copyright (C) 1986, 1987, 1989 Free Software Foundation, Inc. | |
| 3 | ||
| 4 | This file is part of GDB. | |
| 5 | ||
| 6 | GDB is free software; you can redistribute it and/or modify | |
| 7 | it under the terms of the GNU General Public License as published by | |
| 8 | the Free Software Foundation; either version 1, or (at your option) | |
| 9 | any later version. | |
| 10 | ||
| 11 | GDB is distributed in the hope that it will be useful, | |
| 12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 14 | GNU General Public License for more details. | |
| 15 | ||
| 16 | You should have received a copy of the GNU General Public License | |
| 17 | along with GDB; see the file COPYING. If not, write to | |
| 18 | the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */ | |
| 19 | ||
| 20 | #define HOST_BYTE_ORDER LITTLE_ENDIAN | |
| 21 | ||
| 22 | /* Get rid of any system-imposed stack limit if possible. */ | |
| 23 | ||
| 24 | #define SET_STACK_LIMIT_HUGE | |
| 25 | ||
| 26 | /* This is the amount to subtract from u.u_ar0 | |
| 27 | to get the offset in the core file of the register values. */ | |
| 28 | ||
| 29 | #define KERNEL_U_ADDR (0x01000000 - (UPAGES * NBPG)) | |
| 30 | ||
| 31 | /* Override copies of {fetch,store}_inferior_registers in infptrace.c. */ | |
| 32 | #define FETCH_INFERIOR_REGISTERS | |
| 33 | ||
| 34 | \f | |
| 35 | #if 0 | |
| 36 | /* Interface definitions for kernel debugger KDB. */ | |
| 37 | ||
| 38 | /* Map machine fault codes into signal numbers. | |
| 39 | First subtract 0, divide by 4, then index in a table. | |
| 40 | Faults for which the entry in this table is 0 | |
| 41 | are not handled by KDB; the program's own trap handler | |
| 42 | gets to handle then. */ | |
| 43 | ||
| 44 | #define FAULT_CODE_ORIGIN 0 | |
| 45 | #define FAULT_CODE_UNITS 4 | |
| 46 | #define FAULT_TABLE \ | |
| 47 | { 0, SIGKILL, SIGSEGV, 0, 0, 0, 0, 0, \ | |
| 48 | 0, 0, SIGTRAP, SIGTRAP, 0, 0, 0, 0, \ | |
| 49 | 0, 0, 0, 0, 0, 0, 0, 0} | |
| 50 | ||
| 51 | /* Start running with a stack stretching from BEG to END. | |
| 52 | BEG and END should be symbols meaningful to the assembler. | |
| 53 | This is used only for kdb. */ | |
| 54 | ||
| 55 | #define INIT_STACK(beg, end) \ | |
| 56 | { asm (".globl end"); \ | |
| 57 | asm ("movl $ end, sp"); \ | |
| 58 | asm ("clrl fp"); } | |
| 59 | ||
| 60 | /* Push the frame pointer register on the stack. */ | |
| 61 | #define PUSH_FRAME_PTR \ | |
| 62 | asm ("pushl fp"); | |
| 63 | ||
| 64 | /* Copy the top-of-stack to the frame pointer register. */ | |
| 65 | #define POP_FRAME_PTR \ | |
| 66 | asm ("movl (sp), fp"); | |
| 67 | ||
| 68 | /* After KDB is entered by a fault, push all registers | |
| 69 | that GDB thinks about (all NUM_REGS of them), | |
| 70 | so that they appear in order of ascending GDB register number. | |
| 71 | The fault code will be on the stack beyond the last register. */ | |
| 72 | ||
| 73 | #define PUSH_REGISTERS \ | |
| 74 | { asm ("pushl 8(sp)"); \ | |
| 75 | asm ("pushl 8(sp)"); \ | |
| 76 | asm ("pushal 0x14(sp)"); \ | |
| 77 | asm ("pushr $037777"); } | |
| 78 | ||
| 79 | /* Assuming the registers (including processor status) have been | |
| 80 | pushed on the stack in order of ascending GDB register number, | |
| 81 | restore them and return to the address in the saved PC register. */ | |
| 82 | ||
| 83 | #define POP_REGISTERS \ | |
| 84 | { asm ("popr $037777"); \ | |
| 85 | asm ("subl2 $8,(sp)"); \ | |
| 86 | asm ("movl (sp),sp"); \ | |
| 87 | asm ("rei"); } | |
| 88 | #endif /* 0 */ |