projects / binutils.git / blame
| Commit | Line | Data |
|---|---|---|
| dd3b648e RP |
1 | /* Definitions to make GDB run on a Pyramidax under OSx 4.0 (4.2bsd). |
| 2 | Copyright (C) 1988, 1989 Free Software Foundation, Inc. | |
| 3 | ||
| 4 | This file is part of GDB. | |
| 5 | ||
| 99a7de40 | 6 | This program is free software; you can redistribute it and/or modify |
| dd3b648e | 7 | it under the terms of the GNU General Public License as published by |
| 99a7de40 JG |
8 | the Free Software Foundation; either version 2 of the License, or |
| 9 | (at your option) any later version. | |
| dd3b648e | 10 | |
| 99a7de40 | 11 | This program is distributed in the hope that it will be useful, |
| dd3b648e RP |
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 | |
| 99a7de40 JG |
17 | along with this program; if not, write to the Free Software |
| 18 | Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ | |
| dd3b648e RP |
19 | |
| 20 | #define HOST_BYTE_ORDER BIG_ENDIAN | |
| 21 | ||
| 22 | /* Define PYRAMID_CONTROL_FRAME_DEBUGGING to get copious messages | |
| 23 | about reading the control stack on standard output. This | |
| 24 | makes gdb unusable as a debugger. */ | |
| 25 | ||
| 26 | /* #define PYRAMID_CONTROL_FRAME_DEBUGGING */ | |
| 27 | ||
| 28 | /* Define PYRAMID_FRAME_DEBUGGING for ? */ | |
| 29 | ||
| 30 | /* use Pyramid's slightly strange ptrace */ | |
| 31 | #define PYRAMID_PTRACE | |
| 32 | ||
| 33 | /* Traditional Unix virtual address spaces have thre regions: text, | |
| 34 | data and stack. The text, initialised data, and uninitialised data | |
| 35 | are represented in separate segments of the a.out file. | |
| 36 | When a process dumps core, the data and stack regions are written | |
| 37 | to a core file. This gives a debugger enough information to | |
| 38 | reconstruct (and debug) the virtual address space at the time of | |
| 39 | the coredump. | |
| 40 | Pyramids have an distinct fourth region of the virtual address | |
| 41 | space, in which the contents of the windowed registers are stacked | |
| 42 | in fixed-size frames. Pyramid refer to this region as the control | |
| 43 | stack. Each call (or trap) automatically allocates a new register | |
| 44 | frame; each return deallocates the current frame and restores the | |
| 45 | windowed registers to their values before the call. | |
| 46 | ||
| 47 | When dumping core, the control stack is written to a core files as | |
| 48 | a third segment. The core-handling functions need to know to deal | |
| 49 | with it. */ | |
| 50 | ||
| 51 | /* Tell dep.c what the extra segment is. */ | |
| 52 | #define PYRAMID_CORE | |
| 53 | ||
| 54 | #define NO_SIGINTERRUPT | |
| 55 | ||
| 56 | #define HAVE_WAIT_STRUCT | |
| 57 | ||
| 58 | /* Get rid of any system-imposed stack limit if possible. */ | |
| 59 | ||
| 60 | #define SET_STACK_LIMIT_HUGE | |
| 61 | ||
| 62 | /* This is the amount to subtract from u.u_ar0 | |
| 63 | to get the offset in the core file of the register values. */ | |
| 64 | ||
| 65 | #define KERNEL_U_ADDR (0x80000000 - (UPAGES * NBPG)) | |
| 66 | ||
| 67 | /* Define offsets of registers in the core file (or maybe u area) */ | |
| 68 | #define REGISTER_U_ADDR(addr, blockend, regno) \ | |
| 69 | { struct user __u; \ | |
| 70 | addr = blockend + (regno - 16 ) * 4; \ | |
| 71 | if (regno == 67) { \ | |
| 72 | printf("\\geting reg 67\\"); \ | |
| 73 | addr = (int)(&__u.u_pcb.pcb_csp) - (int) &__u; \ | |
| 74 | } else if (regno == KSP_REGNUM) { \ | |
| 75 | printf("\\geting KSP (reg %d)\\", KSP_REGNUM); \ | |
| 76 | addr = (int)(&__u.u_pcb.pcb_ksp) - (int) &__u; \ | |
| 77 | } else if (regno == CSP_REGNUM) { \ | |
| 78 | printf("\\geting CSP (reg %d\\",CSP_REGNUM); \ | |
| 79 | addr = (int)(&__u.u_pcb.pcb_csp) - (int) &__u; \ | |
| 80 | } else if (regno == 64) { \ | |
| 81 | printf("\\geting reg 64\\"); \ | |
| 82 | addr = (int)(&__u.u_pcb.pcb_csp) - (int) &__u; \ | |
| 83 | } else if (regno == PS_REGNUM) \ | |
| 84 | addr = blockend - 4; \ | |
| 85 | else if (1 && ((16 > regno) && (regno > 11))) \ | |
| 86 | addr = last_frame_offset + (4 *(regno+32)); \ | |
| 87 | else if (0 && (12 > regno)) \ | |
| 88 | addr = global_reg_offset + (4 *regno); \ | |
| 89 | else if (16 > regno) \ | |
| 90 | addr = global_reg_offset + (4 *regno); \ | |
| 91 | else \ | |
| 92 | addr = blockend + (regno - 16 ) * 4; \ | |
| 93 | } | |
| 94 | ||
| 95 | /* Override copies of {fetch,store}_inferior_registers in infptrace.c. */ | |
| 96 | #define FETCH_INFERIOR_REGISTERS | |
| 97 | ||
| 98 | /* Compensate for lack of `vprintf' function. */ | |
| 99 | #define MISSING_VPRINTF | |
| 100 | ||
| 101 | \f | |
| 102 | /* Interface definitions for kernel debugger KDB. */ | |
| 103 | ||
| 104 | /* I have *no idea* how to debug OSx kernels, so this | |
| 105 | is flushed, possible forever. */ |