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c906108c SS |
1 | /* Parameters for target execution on an RS6000, for GDB, the GNU debugger. |
2 | Copyright 1986, 1987, 1989, 1991, 1992, 1993, 1994, 1997 | |
3 | Free Software Foundation, Inc. | |
4 | Contributed by IBM Corporation. | |
5 | ||
c5aa993b | 6 | This file is part of GDB. |
c906108c | 7 | |
c5aa993b JM |
8 | This program is free software; you can redistribute it and/or modify |
9 | it under the terms of the GNU General Public License as published by | |
10 | the Free Software Foundation; either version 2 of the License, or | |
11 | (at your option) any later version. | |
c906108c | 12 | |
c5aa993b JM |
13 | This program is distributed in the hope that it will be useful, |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
c906108c | 17 | |
c5aa993b JM |
18 | You should have received a copy of the GNU General Public License |
19 | along with this program; if not, write to the Free Software | |
20 | Foundation, Inc., 59 Temple Place - Suite 330, | |
21 | Boston, MA 02111-1307, USA. */ | |
c906108c | 22 | |
7a78ae4e | 23 | #define GDB_MULTI_ARCH 1 |
c906108c SS |
24 | |
25 | /* Minimum possible text address in AIX */ | |
26 | ||
27 | #define TEXT_SEGMENT_BASE 0x10000000 | |
28 | ||
c906108c SS |
29 | /* AIX's assembler doesn't grok dollar signs in identifiers. |
30 | So we use dots instead. This item must be coordinated with G++. */ | |
31 | #undef CPLUS_MARKER | |
32 | #define CPLUS_MARKER '.' | |
33 | ||
c906108c SS |
34 | /* If PC is in some function-call trampoline code, return the PC |
35 | where the function itself actually starts. If not, return NULL. */ | |
36 | ||
7a78ae4e ND |
37 | #define SKIP_TRAMPOLINE_CODE(pc) rs6000_skip_trampoline_code (pc) |
38 | extern CORE_ADDR rs6000_skip_trampoline_code (CORE_ADDR); | |
c906108c SS |
39 | |
40 | /* Number of trap signals we need to skip over, once the inferior process | |
41 | starts running. */ | |
42 | ||
43 | #define START_INFERIOR_TRAPS_EXPECTED 2 | |
44 | ||
45 | /* AIX has a couple of strange returns from wait(). */ | |
46 | ||
47 | #define CHILD_SPECIAL_WAITSTATUS(ourstatus, hoststatus) ( \ | |
48 | /* "stop after load" status. */ \ | |
49 | (hoststatus) == 0x57c ? (ourstatus)->kind = TARGET_WAITKIND_LOADED, 1 : \ | |
50 | \ | |
51 | /* signal 0. I have no idea why wait(2) returns with this status word. */ \ | |
52 | /* It looks harmless. */ \ | |
53 | (hoststatus) == 0x7f ? (ourstatus)->kind = TARGET_WAITKIND_SPURIOUS, 1 : \ | |
54 | \ | |
55 | /* A normal waitstatus. Let the usual macros deal with it. */ \ | |
56 | 0) | |
57 | ||
58 | /* In xcoff, we cannot process line numbers when we see them. This is | |
59 | mainly because we don't know the boundaries of the include files. So, | |
60 | we postpone that, and then enter and sort(?) the whole line table at | |
61 | once, when we are closing the current symbol table in end_symtab(). */ | |
62 | ||
63 | #define PROCESS_LINENUMBER_HOOK() aix_process_linenos () | |
a14ed312 | 64 | extern void aix_process_linenos (void); |
c5aa993b | 65 | |
c906108c SS |
66 | /* Register numbers of various important registers. |
67 | Note that some of these values are "real" register numbers, | |
68 | and correspond to the general registers of the machine, | |
69 | and some are "phony" register numbers which are too large | |
70 | to be actual register numbers as far as the user is concerned | |
71 | but do serve to get the desired values when passed to read_register. */ | |
72 | ||
c906108c | 73 | #define FP0_REGNUM 32 /* Floating point register 0 */ |
c5aa993b | 74 | #define FPLAST_REGNUM 63 /* Last floating point register */ |
c906108c | 75 | |
c906108c SS |
76 | /* These #defines are used to parse core files and talk to ptrace, so they |
77 | must remain fixed. */ | |
78 | #define FIRST_UISA_SP_REGNUM 64 /* first special register number */ | |
79 | #define LAST_UISA_SP_REGNUM 70 /* last special register number */ | |
80 | ||
c906108c SS |
81 | /* convert a dbx stab register number (from `r' declaration) to a gdb REGNUM */ |
82 | ||
83 | #define STAB_REG_TO_REGNUM(value) (value) | |
84 | ||
c906108c SS |
85 | /* Define other aspects of the stack frame. */ |
86 | ||
c906108c SS |
87 | #define INIT_FRAME_PC_FIRST(fromleaf, prev) \ |
88 | prev->pc = (fromleaf ? SAVED_PC_AFTER_CALL (prev->next) : \ | |
89 | prev->next ? FRAME_SAVED_PC (prev->next) : read_pc ()); | |
c5aa993b | 90 | #define INIT_FRAME_PC(fromleaf, prev) /* nothing */ |
c906108c | 91 | |
fe794dc6 ND |
92 | /* Default offset from SP where the LR is stored */ |
93 | #define DEFAULT_LR_SAVE 8 | |
94 | ||
c906108c SS |
95 | /* Flag for machine-specific stuff in shared files. FIXME */ |
96 | #define IBM6000_TARGET | |
97 | ||
98 | /* RS6000/AIX does not support PT_STEP. Has to be simulated. */ | |
99 | ||
100 | #define SOFTWARE_SINGLE_STEP_P 1 | |
a14ed312 | 101 | extern void rs6000_software_single_step (unsigned int, int); |
c906108c SS |
102 | #define SOFTWARE_SINGLE_STEP(sig,bp_p) rs6000_software_single_step (sig, bp_p) |
103 | ||
7a78ae4e ND |
104 | /* Notice when a new child process is started. */ |
105 | ||
106 | #define TARGET_CREATE_INFERIOR_HOOK rs6000_create_inferior | |
107 | extern void rs6000_create_inferior (int); | |
108 | ||
109 | /* Hook in rs6000-tdep.c for determining the TOC address when | |
110 | calling functions in the inferior. */ | |
111 | ||
112 | extern CORE_ADDR (*rs6000_find_toc_address_hook) (CORE_ADDR); | |
c906108c | 113 | |
7a78ae4e ND |
114 | /* Hook in rs6000-tdep.c to set the current architecture when starting a |
115 | child process. */ | |
c906108c | 116 | |
7a78ae4e | 117 | extern void (*rs6000_set_host_arch_hook) (int); |