1 /* Copyright (C) 1988, 1990 Free Software Foundation, Inc.
3 This file is part of GDB.
5 This program 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 2 of the License, or
8 (at your option) any later version.
10 This program 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 this program; if not, write to the Free Software
17 Foundation, Inc., 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>
47 /* define offsets to the pc instruction offsets in ptrace_user struct */
48 #define SXIP_OFFSET (char *)&u.pt_sigframe.dg_sigframe.sc_sxip - \
51 #define SNIP_OFFSET (char *)&u.pt_sigframe.dg_sigframe.sc_snip - \
54 #define SFIP_OFFSET (char *)&u.pt_sigframe.dg_sigframe.sc_sfip - (char *)&u
55 extern int have_symbol_file_p();
57 extern jmp_buf stack_jmp
;
60 extern char registers
[REGISTER_BYTES
];
63 fetch_inferior_registers ()
66 register unsigned int regaddr
;
67 char buf
[MAX_REGISTER_RAW_SIZE
];
73 offset
= (char *) &u
.pt_r0
- (char *) &u
;
74 regaddr
= offset
; /* byte offset to r0;*/
76 /* offset = ptrace (3, inferior_pid, offset, 0) - KERNEL_U_ADDR; */
77 for (regno
= 0; regno
< NUM_REGS
; regno
++)
79 /*regaddr = register_addr (regno, offset);*/
82 for (i
= 0; i
< REGISTER_RAW_SIZE (regno
); i
+= sizeof (int))
84 *(int *) &buf
[i
] = ptrace (3, inferior_pid
, regaddr
, 0);
85 regaddr
+= sizeof (int);
87 supply_register (regno
, buf
);
89 /* now load up registers 36 - 38; special pc registers */
90 *(int *) &buf
[0] = ptrace (3,inferior_pid
,(char *)&u
.pt_sigframe
.dg_sigframe
.sc_sxip
- (char *)&u
,0);
91 supply_register (SXIP_REGNUM
, buf
);
92 *(int *) &buf
[0] = ptrace (3, inferior_pid
, (char *)&u
.pt_sigframe
.dg_sigframe
.sc_snip
- (char *)&u
,0);
93 supply_register (SNIP_REGNUM
, buf
);
94 *(int *) &buf
[0] = ptrace (3, inferior_pid
, (char *)&u
.pt_sigframe
.dg_sigframe
.sc_sfip
- (char *)&u
,0);
95 supply_register (SFIP_REGNUM
, buf
);
98 /* Store our register values back into the inferior.
99 If REGNO is -1, do this for all registers.
100 Otherwise, REGNO specifies which register (so we can save time). */
102 store_inferior_registers (regno
)
105 register unsigned int regaddr
;
113 unsigned int offset
= (char *) &u
.pt_r0
- (char *) &u
;
115 #endif /* defined (DGUX) */
118 unsigned int offset
= (char *) &u
.pt_r0
- (char *) &u
;
120 #endif /* defined(BCS) */
121 /* offset = ptrace (3, inferior_pid, offset, 0) - KERNEL_U_ADDR; */
126 /* regaddr = register_addr (regno, offset); */
127 if (regno
< PC_REGNUM
)
129 regaddr
= offset
+ regno
* sizeof (int);
131 ptrace (6, inferior_pid
, regaddr
, read_register (regno
));
134 sprintf (buf
, "writing register number %d", regno
);
135 perror_with_name (buf
);
138 else if (regno
== SXIP_REGNUM
)
139 ptrace (6, inferior_pid
, SXIP_OFFSET
, read_register(regno
));
140 else if (regno
== SNIP_REGNUM
)
141 ptrace (6, inferior_pid
, SNIP_OFFSET
, read_register(regno
));
142 else if (regno
== SFIP_REGNUM
)
143 ptrace (6, inferior_pid
, SFIP_OFFSET
, read_register(regno
));
144 else printf ("Bad register number for store_inferior routine\n");
147 for (regno
= 0; regno
< NUM_REGS
- 3; regno
++)
149 /* regaddr = register_addr (regno, offset); */
151 regaddr
= offset
+ regno
* sizeof (int);
152 ptrace (6, inferior_pid
, regaddr
, read_register (regno
));
155 sprintf (buf
, "writing register number %d", regno
);
156 perror_with_name (buf
);
159 ptrace (6,inferior_pid
,SXIP_OFFSET
,read_register(SXIP_REGNUM
));
160 ptrace (6,inferior_pid
,SNIP_OFFSET
,read_register(SNIP_REGNUM
));
161 ptrace (6,inferior_pid
,SFIP_OFFSET
,read_register(SFIP_REGNUM
));
168 /* Core files are now a function of BFD. */
171 core_file_command (filename
, from_tty
)
176 extern char registers
[];
178 /* Need symbol file and one with tdesc info for corefiles to work */
179 if (!have_symbol_file_p())
180 error ("Requires symbol-file and exec-file");
182 error ("Requires exec-file and symbol-file");
184 /* Discard all vestiges of any previous core file
185 and mark data and stack spaces as empty. */
197 stack_start
= STACK_END_ADDR
;
198 stack_end
= STACK_END_ADDR
;
200 /* Now, if a new core file was specified, open it and digest it. */
204 filename
= tilde_expand (filename
);
205 make_cleanup (free
, filename
);
207 if (have_inferior_p ())
208 error ("To look at a core file, you must kill the inferior with \"kill\".");
209 corechan
= open (filename
, O_RDONLY
, 0);
211 perror_with_name (filename
);
212 /* 4.2-style (and perhaps also sysV-style) core dump file. */
218 val
= myread (corechan
, &u
, sizeof u
);
220 perror_with_name (filename
);
221 data_start
= u
.pt_o_data_start
;
223 data_end
= data_start
+ u
.pt_dsize
;
224 stack_start
= stack_end
- u
.pt_ssize
;
225 data_offset
= u
.pt_dataptr
;
226 stack_offset
= data_offset
+ u
.pt_dsize
;
234 #endif /* defined (DGUX) */
238 reg_offset
= (int) u
.pt_r0
- KERNEL_U_ADDR
;
240 #endif /* defined(BCS) */
242 /* I don't know where to find this info.
243 So, for now, mark it as not available. */
244 /* N_SET_MAGIC (core_aouthdr, 0); */
245 bzero ((char *) &core_aouthdr
, sizeof core_aouthdr
);
247 /* Read the register values out of the core file and store
248 them where `read_register' will find them. */
253 for (regno
= 0; regno
< NUM_REGS
; regno
++)
255 char buf
[MAX_REGISTER_RAW_SIZE
];
257 val
= lseek (corechan
, register_addr (regno
, reg_offset
), 0);
259 perror_with_name (filename
);
261 val
= myread (corechan
, buf
, sizeof buf
);
263 perror_with_name (filename
);
264 supply_register (regno
, buf
);
268 if (filename
[0] == '/')
269 corefile
= savestring (filename
, strlen (filename
));
272 corefile
= concat (current_directory
, "/", filename
);
275 current_context
= init_dcontext();
276 set_current_frame ( create_new_frame(get_frame_base (read_pc()),
278 select_frame (get_current_frame (), 0);
282 printf ("No core file now.\n");
286 /* blockend is the address of the end of the user structure */
287 m88k_register_u_addr (blockend
, regnum
)
290 int ustart
= blockend
- sizeof (struct USER
);
324 case 31: return (ustart
+ ((int) &u
.pt_r0
- (int) &u
) + sizeof(REGISTER_TYPE
) * regnum
);
325 case PSR_REGNUM
: return (ustart
+ ((int) &u
.pt_psr
- (int) &u
));
326 case FPSR_REGNUM
: return (ustart
+ ((int) &u
.pt_fpsr
- (int) &u
));
327 case FPCR_REGNUM
: return (ustart
+ ((int) &u
.pt_fpcr
- (int) &u
));
328 case SXIP_REGNUM
: return (ustart
+ SXIP_OFFSET
);
329 case SNIP_REGNUM
: return (ustart
+ SNIP_OFFSET
);
330 case SFIP_REGNUM
: return (ustart
+ SFIP_OFFSET
);
331 default: return (blockend
+ sizeof (REGISTER_TYPE
) * regnum
);
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