| 1 | /* Parameters for target execution on an RS6000, for GDB, the GNU debugger. |
| 2 | Copyright 1986, 1987, 1989, 1991, 1992, 1993, 1994, 1995, 1996, 1997, |
| 3 | 1998, 1999, 2000 |
| 4 | Free Software Foundation, Inc. |
| 5 | Contributed by IBM Corporation. |
| 6 | |
| 7 | This file is part of GDB. |
| 8 | |
| 9 | This program is free software; you can redistribute it and/or modify |
| 10 | it under the terms of the GNU General Public License as published by |
| 11 | the Free Software Foundation; either version 2 of the License, or |
| 12 | (at your option) any later version. |
| 13 | |
| 14 | This program is distributed in the hope that it will be useful, |
| 15 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 17 | GNU General Public License for more details. |
| 18 | |
| 19 | You should have received a copy of the GNU General Public License |
| 20 | along with this program; if not, write to the Free Software |
| 21 | Foundation, Inc., 59 Temple Place - Suite 330, |
| 22 | Boston, MA 02111-1307, USA. */ |
| 23 | |
| 24 | #define GDB_MULTI_ARCH 1 |
| 25 | |
| 26 | /* Minimum possible text address in AIX */ |
| 27 | |
| 28 | #define TEXT_SEGMENT_BASE 0x10000000 |
| 29 | |
| 30 | /* Return whether PC in function NAME is in code that should be skipped when |
| 31 | single-stepping. */ |
| 32 | |
| 33 | #define IN_SOLIB_RETURN_TRAMPOLINE(pc, name) \ |
| 34 | rs6000_in_solib_return_trampoline (pc, name) |
| 35 | extern int rs6000_in_solib_return_trampoline (CORE_ADDR, char *); |
| 36 | |
| 37 | /* If PC is in some function-call trampoline code, return the PC |
| 38 | where the function itself actually starts. If not, return NULL. */ |
| 39 | |
| 40 | #define SKIP_TRAMPOLINE_CODE(pc) rs6000_skip_trampoline_code (pc) |
| 41 | extern CORE_ADDR rs6000_skip_trampoline_code (CORE_ADDR); |
| 42 | |
| 43 | /* Number of trap signals we need to skip over, once the inferior process |
| 44 | starts running. */ |
| 45 | |
| 46 | #define START_INFERIOR_TRAPS_EXPECTED 2 |
| 47 | |
| 48 | /* AIX has a couple of strange returns from wait(). */ |
| 49 | |
| 50 | #define CHILD_SPECIAL_WAITSTATUS(ourstatus, hoststatus) ( \ |
| 51 | /* "stop after load" status. */ \ |
| 52 | (hoststatus) == 0x57c ? (ourstatus)->kind = TARGET_WAITKIND_LOADED, 1 : \ |
| 53 | \ |
| 54 | /* signal 0. I have no idea why wait(2) returns with this status word. */ \ |
| 55 | /* It looks harmless. */ \ |
| 56 | (hoststatus) == 0x7f ? (ourstatus)->kind = TARGET_WAITKIND_SPURIOUS, 1 : \ |
| 57 | \ |
| 58 | /* A normal waitstatus. Let the usual macros deal with it. */ \ |
| 59 | 0) |
| 60 | |
| 61 | /* In xcoff, we cannot process line numbers when we see them. This is |
| 62 | mainly because we don't know the boundaries of the include files. So, |
| 63 | we postpone that, and then enter and sort(?) the whole line table at |
| 64 | once, when we are closing the current symbol table in end_symtab(). */ |
| 65 | |
| 66 | #define PROCESS_LINENUMBER_HOOK() aix_process_linenos () |
| 67 | extern void aix_process_linenos (void); |
| 68 | |
| 69 | /* Register numbers of various important registers. |
| 70 | Note that some of these values are "real" register numbers, |
| 71 | and correspond to the general registers of the machine, |
| 72 | and some are "phony" register numbers which are too large |
| 73 | to be actual register numbers as far as the user is concerned |
| 74 | but do serve to get the desired values when passed to read_register. */ |
| 75 | |
| 76 | #define FP0_REGNUM 32 /* Floating point register 0 */ |
| 77 | #define FPLAST_REGNUM 63 /* Last floating point register */ |
| 78 | |
| 79 | /* Define other aspects of the stack frame. */ |
| 80 | |
| 81 | #define DEPRECATED_INIT_FRAME_PC_FIRST(fromleaf, prev) \ |
| 82 | (fromleaf ? SAVED_PC_AFTER_CALL (prev->next) : \ |
| 83 | prev->next ? DEPRECATED_FRAME_SAVED_PC (prev->next) : read_pc ()) |
| 84 | /* NOTE: cagney/2002-12-08: Add local declaration of |
| 85 | init_frame_pc_noop() because it isn't possible to include |
| 86 | "arch-utils.h" here. Not too bad as this entire file is going away |
| 87 | anyway. */ |
| 88 | extern CORE_ADDR init_frame_pc_noop (int fromleaf, struct frame_info *prev); |
| 89 | #define DEPRECATED_INIT_FRAME_PC(fromleaf, prev) (init_frame_pc_noop (fromleaf, prev)) |
| 90 | |
| 91 | /* Flag for machine-specific stuff in shared files. FIXME */ |
| 92 | #define IBM6000_TARGET |
| 93 | |
| 94 | /* RS6000/AIX does not support PT_STEP. Has to be simulated. */ |
| 95 | |
| 96 | #define SOFTWARE_SINGLE_STEP_P() 1 |
| 97 | extern void rs6000_software_single_step (enum target_signal, int); |
| 98 | #define SOFTWARE_SINGLE_STEP(sig,bp_p) rs6000_software_single_step (sig, bp_p) |
| 99 | |
| 100 | /* Notice when a new child process is started. */ |
| 101 | |
| 102 | #define TARGET_CREATE_INFERIOR_HOOK rs6000_create_inferior |
| 103 | extern void rs6000_create_inferior (int); |
| 104 | |
| 105 | /* Hook in rs6000-tdep.c for determining the TOC address when |
| 106 | calling functions in the inferior. */ |
| 107 | |
| 108 | extern CORE_ADDR (*rs6000_find_toc_address_hook) (CORE_ADDR); |
| 109 | |
| 110 | /* Hook in rs6000-tdep.c to set the current architecture when starting a |
| 111 | child process. */ |
| 112 | |
| 113 | extern void (*rs6000_set_host_arch_hook) (int); |
| 114 | |
| 115 | /* We need solib.h for building cross debuggers. However, we don't want |
| 116 | to clobber any special solib support required by native debuggers, so |
| 117 | only include solib.h if SOLIB_ADD is not defined. */ |
| 118 | #ifndef SOLIB_ADD |
| 119 | #include "solib.h" |
| 120 | #endif |