1 /* Copyright (C) 1988, 1990 Free Software Foundation, Inc.
3 This file is part of GDB.
5 GDB is free software; you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published by
7 the Free Software Foundation; either version 1, or (at your option)
10 GDB is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 GNU General Public License for more details.
15 You should have received a copy of the GNU General Public License
16 along with GDB; see the file COPYING. If not, write to
17 the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
26 #include <sys/types.h>
29 #include <sys/param.h>
34 #ifndef USER /* added to support BCS ptrace_user */
36 #define USER ptrace_user
38 #include <sys/ioctl.h>
41 #ifdef COFF_ENCAPSULATE
42 #include "a.out.encap.h"
54 /* define offsets to the pc instruction offsets in ptrace_user struct */
55 #define SXIP_OFFSET (char *)&u.pt_sigframe.dg_sigframe.sc_sxip - \
58 #define SNIP_OFFSET (char *)&u.pt_sigframe.dg_sigframe.sc_snip - \
61 #define SFIP_OFFSET (char *)&u.pt_sigframe.dg_sigframe.sc_sfip - (char *)&u
62 extern int have_symbol_file_p();
64 extern jmp_buf stack_jmp
;
67 extern char registers
[REGISTER_BYTES
];
70 fetch_inferior_registers ()
73 register unsigned int regaddr
;
74 char buf
[MAX_REGISTER_RAW_SIZE
];
80 offset
= (char *) &u
.pt_r0
- (char *) &u
;
81 regaddr
= offset
; /* byte offset to r0;*/
83 /* offset = ptrace (3, inferior_pid, offset, 0) - KERNEL_U_ADDR; */
84 for (regno
= 0; regno
< NUM_REGS
; regno
++)
86 /*regaddr = register_addr (regno, offset);*/
89 for (i
= 0; i
< REGISTER_RAW_SIZE (regno
); i
+= sizeof (int))
91 *(int *) &buf
[i
] = ptrace (3, inferior_pid
, regaddr
, 0);
92 regaddr
+= sizeof (int);
94 supply_register (regno
, buf
);
96 /* now load up registers 36 - 38; special pc registers */
97 *(int *) &buf
[0] = ptrace (3,inferior_pid
,(char *)&u
.pt_sigframe
.dg_sigframe
.sc_sxip
- (char *)&u
,0);
98 supply_register (SXIP_REGNUM
, buf
);
99 *(int *) &buf
[0] = ptrace (3, inferior_pid
, (char *)&u
.pt_sigframe
.dg_sigframe
.sc_snip
- (char *)&u
,0);
100 supply_register (SNIP_REGNUM
, buf
);
101 *(int *) &buf
[0] = ptrace (3, inferior_pid
, (char *)&u
.pt_sigframe
.dg_sigframe
.sc_sfip
- (char *)&u
,0);
102 supply_register (SFIP_REGNUM
, buf
);
105 /* Store our register values back into the inferior.
106 If REGNO is -1, do this for all registers.
107 Otherwise, REGNO specifies which register (so we can save time). */
109 store_inferior_registers (regno
)
112 register unsigned int regaddr
;
120 unsigned int offset
= (char *) &u
.pt_r0
- (char *) &u
;
122 #endif /* defined (DGUX) */
125 unsigned int offset
= (char *) &u
.pt_r0
- (char *) &u
;
127 #endif /* defined(BCS) */
128 /* offset = ptrace (3, inferior_pid, offset, 0) - KERNEL_U_ADDR; */
133 /* regaddr = register_addr (regno, offset); */
134 if (regno
< PC_REGNUM
)
136 regaddr
= offset
+ regno
* sizeof (int);
138 ptrace (6, inferior_pid
, regaddr
, read_register (regno
));
141 sprintf (buf
, "writing register number %d", regno
);
142 perror_with_name (buf
);
145 else if (regno
== SXIP_REGNUM
)
146 ptrace (6, inferior_pid
, SXIP_OFFSET
, read_register(regno
));
147 else if (regno
== SNIP_REGNUM
)
148 ptrace (6, inferior_pid
, SNIP_OFFSET
, read_register(regno
));
149 else if (regno
== SFIP_REGNUM
)
150 ptrace (6, inferior_pid
, SFIP_OFFSET
, read_register(regno
));
151 else printf ("Bad register number for store_inferior routine\n");
154 for (regno
= 0; regno
< NUM_REGS
- 3; regno
++)
156 /* regaddr = register_addr (regno, offset); */
158 regaddr
= offset
+ regno
* sizeof (int);
159 ptrace (6, inferior_pid
, regaddr
, read_register (regno
));
162 sprintf (buf
, "writing register number %d", regno
);
163 perror_with_name (buf
);
166 ptrace (6,inferior_pid
,SXIP_OFFSET
,read_register(SXIP_REGNUM
));
167 ptrace (6,inferior_pid
,SNIP_OFFSET
,read_register(SNIP_REGNUM
));
168 ptrace (6,inferior_pid
,SFIP_OFFSET
,read_register(SFIP_REGNUM
));
175 /* Core files are now a function of BFD. */
178 core_file_command (filename
, from_tty
)
183 extern char registers
[];
185 /* Need symbol file and one with tdesc info for corefiles to work */
186 if (!have_symbol_file_p())
187 error ("Requires symbol-file and exec-file");
189 error ("Requires exec-file and symbol-file");
191 /* Discard all vestiges of any previous core file
192 and mark data and stack spaces as empty. */
204 stack_start
= STACK_END_ADDR
;
205 stack_end
= STACK_END_ADDR
;
207 /* Now, if a new core file was specified, open it and digest it. */
211 filename
= tilde_expand (filename
);
212 make_cleanup (free
, filename
);
214 if (have_inferior_p ())
215 error ("To look at a core file, you must kill the inferior with \"kill\".");
216 corechan
= open (filename
, O_RDONLY
, 0);
218 perror_with_name (filename
);
219 /* 4.2-style (and perhaps also sysV-style) core dump file. */
225 val
= myread (corechan
, &u
, sizeof u
);
227 perror_with_name (filename
);
228 data_start
= u
.pt_o_data_start
;
230 data_end
= data_start
+ u
.pt_dsize
;
231 stack_start
= stack_end
- u
.pt_ssize
;
232 data_offset
= u
.pt_dataptr
;
233 stack_offset
= data_offset
+ u
.pt_dsize
;
241 #endif /* defined (DGUX) */
245 reg_offset
= (int) u
.pt_r0
- KERNEL_U_ADDR
;
247 #endif /* defined(BCS) */
249 /* I don't know where to find this info.
250 So, for now, mark it as not available. */
251 /* N_SET_MAGIC (core_aouthdr, 0); */
252 bzero ((char *) &core_aouthdr
, sizeof core_aouthdr
);
254 /* Read the register values out of the core file and store
255 them where `read_register' will find them. */
260 for (regno
= 0; regno
< NUM_REGS
; regno
++)
262 char buf
[MAX_REGISTER_RAW_SIZE
];
264 val
= lseek (corechan
, register_addr (regno
, reg_offset
), 0);
266 perror_with_name (filename
);
268 val
= myread (corechan
, buf
, sizeof buf
);
270 perror_with_name (filename
);
271 supply_register (regno
, buf
);
275 if (filename
[0] == '/')
276 corefile
= savestring (filename
, strlen (filename
));
279 corefile
= concat (current_directory
, "/", filename
);
282 current_context
= init_dcontext();
283 set_current_frame ( create_new_frame(get_frame_base (read_pc()),
285 select_frame (get_current_frame (), 0);
289 printf ("No core file now.\n");
293 /* blockend is the address of the end of the user structure */
294 m88k_register_u_addr (blockend
, regnum
)
297 int ustart
= blockend
- sizeof (struct USER
);
331 case 31: return (ustart
+ ((int) &u
.pt_r0
- (int) &u
) + sizeof(REGISTER_TYPE
) * regnum
);
332 case PSR_REGNUM
: return (ustart
+ ((int) &u
.pt_psr
- (int) &u
));
333 case FPSR_REGNUM
: return (ustart
+ ((int) &u
.pt_fpsr
- (int) &u
));
334 case FPCR_REGNUM
: return (ustart
+ ((int) &u
.pt_fpcr
- (int) &u
));
335 case SXIP_REGNUM
: return (ustart
+ SXIP_OFFSET
);
336 case SNIP_REGNUM
: return (ustart
+ SNIP_OFFSET
);
337 case SFIP_REGNUM
: return (ustart
+ SFIP_OFFSET
);
338 default: return (blockend
+ sizeof (REGISTER_TYPE
) * regnum
);