| 1 | /* Definitions to make GDB run on a Pyramidax under OSx 4.0 (4.2bsd). |
| 2 | Copyright 1988, 1989, 1992 Free Software Foundation, Inc. |
| 3 | |
| 4 | This file is part of GDB. |
| 5 | |
| 6 | This program 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 2 of the License, or |
| 9 | (at your option) any later version. |
| 10 | |
| 11 | This program 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 this program; if not, write to the Free Software |
| 18 | Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ |
| 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 |