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[deliverable/binutils-gdb.git] / gdb / w65-tdep.c
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AC		 1/* OBSOLETE /* Target-machine dependent code for WDC-65816, for GDB. */
2/* OBSOLETE Copyright 1995, 1996, 2000, 2001 Free Software Foundation, Inc. */
3/* OBSOLETE */
4/* OBSOLETE This file is part of GDB. */
5/* OBSOLETE */
6/* OBSOLETE This program is free software; you can redistribute it and/or modify */
7/* OBSOLETE it under the terms of the GNU General Public License as published by */
8/* OBSOLETE the Free Software Foundation; either version 2 of the License, or */
9/* OBSOLETE (at your option) any later version. */
10/* OBSOLETE */
11/* OBSOLETE This program is distributed in the hope that it will be useful, */
12/* OBSOLETE but WITHOUT ANY WARRANTY; without even the implied warranty of */
13/* OBSOLETE MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the */
14/* OBSOLETE GNU General Public License for more details. */
15/* OBSOLETE */
16/* OBSOLETE You should have received a copy of the GNU General Public License */
17/* OBSOLETE along with this program; if not, write to the Free Software */
18/* OBSOLETE Foundation, Inc., 59 Temple Place - Suite 330, */
19/* OBSOLETE Boston, MA 02111-1307, USA. */ */
20/* OBSOLETE */
21/* OBSOLETE /* */
22/* OBSOLETE Contributed by Steve Chamberlain */
23/* OBSOLETE sac@cygnus.com */
24/* OBSOLETE */ */
25/* OBSOLETE */
26/* OBSOLETE #include "defs.h" */
27/* OBSOLETE #include "frame.h" */
28/* OBSOLETE #include "obstack.h" */
29/* OBSOLETE #include "symtab.h" */
30/* OBSOLETE #include "gdbcmd.h" */
31/* OBSOLETE #include "gdbtypes.h" */
32/* OBSOLETE #include "dis-asm.h" */
33/* OBSOLETE #include "gdbcore.h" */
34/* OBSOLETE #include "regcache.h" */
35/* OBSOLETE */
36/* OBSOLETE /* Return the saved PC from this frame. */ */
37/* OBSOLETE */
38/* OBSOLETE */
39/* OBSOLETE CORE_ADDR */
40/* OBSOLETE w65_frame_saved_pc (struct frame_info *frame) */
41/* OBSOLETE { */
42/* OBSOLETE return (read_memory_integer (frame->frame + 2, 4) & 0xffffff); */
43/* OBSOLETE } */
44/* OBSOLETE */
45/* OBSOLETE CORE_ADDR */
46/* OBSOLETE w65_addr_bits_remove (CORE_ADDR addr) */
47/* OBSOLETE { */
48/* OBSOLETE return ((addr) & 0xffffff); */
49/* OBSOLETE } */
50/* OBSOLETE */
51/* OBSOLETE read_memory_pointer (CORE_ADDR x) */
52/* OBSOLETE { */
53/* OBSOLETE return read_memory_integer (ADDR_BITS_REMOVE (x), 4); */
54/* OBSOLETE } */
55/* OBSOLETE */
56/* OBSOLETE init_frame_pc (void) */
57/* OBSOLETE { */
58/* OBSOLETE internal_error (__FILE__, __LINE__, "failed internal consistency check"); */
59/* OBSOLETE } */
60/* OBSOLETE */
61/* OBSOLETE void */
62/* OBSOLETE w65_push_dummy_frame (void) */
63/* OBSOLETE { */
64/* OBSOLETE internal_error (__FILE__, __LINE__, "failed internal consistency check"); */
65/* OBSOLETE } */
66/* OBSOLETE */
67/* OBSOLETE /* Put here the code to store, into a struct frame_saved_regs, */
68/* OBSOLETE the addresses of the saved registers of frame described by FRAME_INFO. */
69/* OBSOLETE This includes special registers such as pc and fp saved in special */
70/* OBSOLETE ways in the stack frame. sp is even more special: */
71/* OBSOLETE the address we return for it IS the sp for the next frame. */
72/* OBSOLETE */
73/* OBSOLETE We cache the result of doing this in the frame_cache_obstack, since */
74/* OBSOLETE it is fairly expensive. */ */
75/* OBSOLETE */
76/* OBSOLETE void */
77/* OBSOLETE frame_find_saved_regs (struct frame_info *fip, struct frame_saved_regs *fsrp) */
78/* OBSOLETE { */
79/* OBSOLETE int locals; */
80/* OBSOLETE CORE_ADDR pc; */
81/* OBSOLETE CORE_ADDR adr; */
82/* OBSOLETE int i; */
83/* OBSOLETE */
84/* OBSOLETE memset (fsrp, 0, sizeof *fsrp); */
85/* OBSOLETE } */
86/* OBSOLETE */
87/* OBSOLETE int */
88/* OBSOLETE saved_pc_after_call (void) */
89/* OBSOLETE { */
90/* OBSOLETE int sp = read_register (SP_REGNUM); */
91/* OBSOLETE int val = read_memory_integer (sp + 1, 4); */
92/* OBSOLETE return ADDR_BITS_REMOVE (val); */
93/* OBSOLETE } */
94/* OBSOLETE */
95/* OBSOLETE */
96/* OBSOLETE extract_return_value (struct type *type, char *regbuf, char *valbuf) */
97/* OBSOLETE { */
98/* OBSOLETE int b; */
99/* OBSOLETE int len = TYPE_LENGTH (type); */
100/* OBSOLETE */
101/* OBSOLETE for (b = 0; b < len; b += 2) */
102/* OBSOLETE { */
103/* OBSOLETE int todo = len - b; */
104/* OBSOLETE if (todo > 2) */
105/* OBSOLETE todo = 2; */
106/* OBSOLETE memcpy (valbuf + b, regbuf + b, todo); */
107/* OBSOLETE } */
108/* OBSOLETE } */
109/* OBSOLETE */
110/* OBSOLETE void */
111/* OBSOLETE write_return_value (struct type *type, char *valbuf) */
112/* OBSOLETE { */
113/* OBSOLETE int reg; */
114/* OBSOLETE int len; */
115/* OBSOLETE for (len = 0; len < TYPE_LENGTH (type); len += 2) */
116/* OBSOLETE { */
117/* OBSOLETE write_register_bytes (REGISTER_BYTE (len / 2 + 2), valbuf + len, 2); */
118/* OBSOLETE } */
119/* OBSOLETE } */
120/* OBSOLETE */
121/* OBSOLETE void */
122/* OBSOLETE store_struct_return (CORE_ADDR addr, CORE_ADDR sp) */
123/* OBSOLETE { */
124/* OBSOLETE write_register (2, addr); */
125/* OBSOLETE } */
126/* OBSOLETE */
127/* OBSOLETE void */
128/* OBSOLETE w65_pop_frame (void) */
129/* OBSOLETE { */
130/* OBSOLETE } */
131/* OBSOLETE */
132/* OBSOLETE init_extra_frame_info (void) */
133/* OBSOLETE { */
134/* OBSOLETE } */
135/* OBSOLETE */
136/* OBSOLETE pop_frame (void) */
137/* OBSOLETE { */
138/* OBSOLETE } */
139/* OBSOLETE */
140/* OBSOLETE w65_frame_chain (struct frame_info *thisframe) */
141/* OBSOLETE { */
142/* OBSOLETE return 0xffff & read_memory_integer ((thisframe)->frame, 2); */
143/* OBSOLETE } */
144/* OBSOLETE */
145/* OBSOLETE static int */
146/* OBSOLETE gb (int x) */
147/* OBSOLETE { */
148/* OBSOLETE return read_memory_integer (x, 1) & 0xff; */
149/* OBSOLETE } */
150/* OBSOLETE */
151/* OBSOLETE extern CORE_ADDR */
152/* OBSOLETE w65_skip_prologue (CORE_ADDR pc) */
153/* OBSOLETE { */
154/* OBSOLETE CORE_ADDR too_far = pc + 20; */
155/* OBSOLETE */
156/* OBSOLETE /* looking for bits of the prologue, we can expect to */
157/* OBSOLETE see this in a frameful function: */
158/* OBSOLETE */
159/* OBSOLETE stack adjust: */
160/* OBSOLETE */
161/* OBSOLETE 3B tsc */
162/* OBSOLETE 1A inc a */
163/* OBSOLETE 18 clc */
164/* OBSOLETE 69E2FF adc #0xffe2 */
165/* OBSOLETE 3A dec a */
166/* OBSOLETE 1B tcs */
167/* OBSOLETE 1A inc a */
168/* OBSOLETE */
169/* OBSOLETE link: */
170/* OBSOLETE */
171/* OBSOLETE A500 lda <r15 */
172/* OBSOLETE 48 pha */
173/* OBSOLETE 3B tsc */
174/* OBSOLETE 1a inc a */
175/* OBSOLETE 8500 sta <r15 */
176/* OBSOLETE */
177/* OBSOLETE */ */
178/* OBSOLETE */
179/* OBSOLETE #define TSC 0x3b */
180/* OBSOLETE #define TCS 0x1b */
181/* OBSOLETE #define INCA 0x1a */
182/* OBSOLETE #define PHA 0x48 */
183/* OBSOLETE #define LDADIR 0xa5 */
184/* OBSOLETE #define STADIR 0x85 */
185/* OBSOLETE */
186/* OBSOLETE /* Skip a stack adjust - any area between a tsc and tcs */ */
187/* OBSOLETE if (gb (pc) == TSC) */
188/* OBSOLETE { */
189/* OBSOLETE while (pc < too_far && gb (pc) != TCS) */
190/* OBSOLETE { */
191/* OBSOLETE pc++; */
192/* OBSOLETE } */
193/* OBSOLETE pc++; */
194/* OBSOLETE /* Skip a stupid inc a */ */
195/* OBSOLETE if (gb (pc) == INCA) */
196/* OBSOLETE pc++; */
197/* OBSOLETE */
198/* OBSOLETE } */
199/* OBSOLETE /* Stack adjust can also be done with n pha's */ */
200/* OBSOLETE while (gb (pc) == PHA) */
201/* OBSOLETE pc++; */
202/* OBSOLETE */
203/* OBSOLETE /* Skip a link - that's a ld/ph/tsc/inc/sta */ */
204/* OBSOLETE */
205/* OBSOLETE if (gb (pc) == LDADIR */
206/* OBSOLETE && gb (pc + 5) == STADIR */
207/* OBSOLETE && gb (pc + 1) == gb (pc + 6) */
208/* OBSOLETE && gb (pc + 2) == PHA */
209/* OBSOLETE && gb (pc + 3) == TSC */
210/* OBSOLETE && gb (pc + 4) == INCA) */
211/* OBSOLETE { */
212/* OBSOLETE pc += 7; */
213/* OBSOLETE } */
214/* OBSOLETE */
215/* OBSOLETE return pc; */
216/* OBSOLETE } */
217/* OBSOLETE */
218/* OBSOLETE */
219/* OBSOLETE register_raw_size (int n) */
220/* OBSOLETE { */
221/* OBSOLETE return sim_reg_size (n); */
222/* OBSOLETE } */
223/* OBSOLETE */
224/* OBSOLETE */
225/* OBSOLETE void */
226/* OBSOLETE print_register_hook (int regno) */
227/* OBSOLETE { */
228/* OBSOLETE if (regno == P_REGNUM) */
229/* OBSOLETE { */
230/* OBSOLETE /* CCR register */ */
231/* OBSOLETE */
232/* OBSOLETE int C, Z, N, V, I, D, X, M; */
233/* OBSOLETE unsigned char b[1]; */
234/* OBSOLETE unsigned char l; */
235/* OBSOLETE */
236/* OBSOLETE read_relative_register_raw_bytes (regno, b); */
237/* OBSOLETE l = b[0]; */
238/* OBSOLETE printf_unfiltered ("\t"); */
239/* OBSOLETE C = (l & 0x1) != 0; */
240/* OBSOLETE Z = (l & 0x2) != 0; */
241/* OBSOLETE I = (l & 0x4) != 0; */
242/* OBSOLETE D = (l & 0x8) != 0; */
243/* OBSOLETE X = (l & 0x10) != 0; */
244/* OBSOLETE M = (l & 0x20) != 0; */
245/* OBSOLETE V = (l & 0x40) != 0; */
246/* OBSOLETE N = (l & 0x80) != 0; */
247/* OBSOLETE */
248/* OBSOLETE printf_unfiltered ("N-%d ", N); */
249/* OBSOLETE printf_unfiltered ("V-%d ", V); */
250/* OBSOLETE printf_unfiltered ("M-%d ", M); */
251/* OBSOLETE printf_unfiltered ("X-%d ", X); */
252/* OBSOLETE printf_unfiltered ("D-%d ", D); */
253/* OBSOLETE printf_unfiltered ("I-%d ", I); */
254/* OBSOLETE printf_unfiltered ("Z-%d ", Z); */
255/* OBSOLETE printf_unfiltered ("C-%d ", C); */
256/* OBSOLETE if ((C | Z) == 0) */
257/* OBSOLETE printf_unfiltered ("u> "); */
258/* OBSOLETE if ((C | Z) == 1) */
259/* OBSOLETE printf_unfiltered ("u<= "); */
260/* OBSOLETE if ((C == 0)) */
261/* OBSOLETE printf_unfiltered ("u>= "); */
262/* OBSOLETE if (C == 1) */
263/* OBSOLETE printf_unfiltered ("u< "); */
264/* OBSOLETE if (Z == 0) */
265/* OBSOLETE printf_unfiltered ("!= "); */
266/* OBSOLETE if (Z == 1) */
267/* OBSOLETE printf_unfiltered ("== "); */
268/* OBSOLETE if ((N ^ V) == 0) */
269/* OBSOLETE printf_unfiltered (">= "); */
270/* OBSOLETE if ((N ^ V) == 1) */
271/* OBSOLETE printf_unfiltered ("< "); */
272/* OBSOLETE if ((Z | (N ^ V)) == 0) */
273/* OBSOLETE printf_unfiltered ("> "); */
274/* OBSOLETE if ((Z | (N ^ V)) == 1) */
275/* OBSOLETE printf_unfiltered ("<= "); */
276/* OBSOLETE } */
277/* OBSOLETE } */
278/* OBSOLETE */
279/* OBSOLETE void */
280/* OBSOLETE _initialize_w65_tdep (void) */
281/* OBSOLETE { */
282/* OBSOLETE tm_print_insn = print_insn_w65; */
283/* OBSOLETE } */
GDB Binutils - Deliverables
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