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c906108c SS |
1 | /* Macro definitions for Power PC running embedded ABI. |
2 | Copyright 1995, 1996, 1997 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ | |
19 | ||
20 | #ifndef TM_PPC_EABI_H | |
21 | #define TM_PPC_EABI_H | |
22 | ||
23 | /* Use generic RS6000 definitions. */ | |
24 | #include "rs6000/tm-rs6000.h" | |
25 | /* except we want to allow single stepping */ | |
26 | #undef SOFTWARE_SINGLE_STEP_P | |
27 | #define SOFTWARE_SINGLE_STEP_P 0 | |
28 | ||
29 | #undef DEFAULT_LR_SAVE | |
30 | #define DEFAULT_LR_SAVE 4 /* eabi saves LR at 4 off of SP */ | |
31 | ||
32 | #define GDB_TARGET_POWERPC | |
33 | ||
34 | #undef PC_LOAD_SEGMENT | |
35 | #undef PROCESS_LINENUMBER_HOOK | |
36 | ||
37 | #undef TEXT_SEGMENT_BASE | |
38 | #define TEXT_SEGMENT_BASE 1 | |
39 | ||
40 | /* Say that we're using ELF, not XCOFF. */ | |
41 | #define ELF_OBJECT_FORMAT 1 | |
42 | ||
43 | #define TARGET_BYTE_ORDER_SELECTABLE_P 1 | |
44 | ||
45 | /* return true if a given `pc' value is in `call dummy' function. */ | |
46 | /* FIXME: This just checks for the end of the stack, which is broken | |
47 | for things like stepping through gcc nested function stubs. */ | |
48 | #undef PC_IN_CALL_DUMMY | |
49 | #define PC_IN_CALL_DUMMY(STOP_PC, STOP_SP, STOP_FRAME_ADDR) \ | |
50 | (STOP_SP < STOP_PC) | |
51 | ||
52 | /* generic dummy frame stuff */ | |
53 | ||
54 | ||
55 | ||
56 | /* target-specific dummy_frame stuff */ | |
57 | ||
58 | extern struct frame_info *rs6000_pop_frame PARAMS ((struct frame_info *frame)); | |
59 | ||
60 | extern CORE_ADDR ppc_push_return_address PARAMS ((CORE_ADDR, CORE_ADDR)); | |
61 | extern CORE_ADDR rs6000_push_arguments PARAMS ((int nargs, | |
62 | struct value **args, | |
63 | CORE_ADDR sp, | |
64 | unsigned char struct_return, | |
65 | CORE_ADDR struct_addr)); | |
66 | ||
67 | #undef PUSH_DUMMY_FRAME | |
68 | #define PUSH_DUMMY_FRAME generic_push_dummy_frame () | |
69 | ||
70 | #define PUSH_RETURN_ADDRESS(PC, SP) ppc_push_return_address (PC, SP) | |
71 | ||
72 | /* override the standard get_saved_register function with | |
73 | one that takes account of generic CALL_DUMMY frames */ | |
74 | #define GET_SAVED_REGISTER | |
75 | ||
76 | #define USE_GENERIC_DUMMY_FRAMES | |
77 | #define CALL_DUMMY_BREAKPOINT_OFFSET (0) | |
78 | #define CALL_DUMMY_LOCATION AT_ENTRY_POINT | |
79 | #define CALL_DUMMY_ADDRESS() entry_point_address () | |
80 | #undef CALL_DUMMY_START_OFFSET | |
81 | #define CALL_DUMMY_START_OFFSET 0 | |
82 | ||
83 | ||
84 | #endif /* TM_PPC_EABI_H */ |