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24f89b68 AC |
1 | /* OBSOLETE /* Native support for Sun 386i's for GDB, the GNU debugger. */ |
2 | /* OBSOLETE Copyright 1986, 1987, 1989, 1991, 1992, 1993, 1995, 1999, 2000, 2001 */ | |
3 | /* OBSOLETE Free Software Foundation, Inc. */ | |
4 | /* OBSOLETE Changes for sun386i by Jean Daniel Fekete (jdf@litp.univ-p6-7.fr), */ | |
5 | /* OBSOLETE C2V Paris, April 89. */ | |
6 | /* OBSOLETE */ | |
7 | /* OBSOLETE This file is part of GDB. */ | |
8 | /* OBSOLETE */ | |
9 | /* OBSOLETE This program is free software; you can redistribute it and/or modify */ | |
10 | /* OBSOLETE it under the terms of the GNU General Public License as published by */ | |
11 | /* OBSOLETE the Free Software Foundation; either version 2 of the License, or */ | |
12 | /* OBSOLETE (at your option) any later version. */ | |
13 | /* OBSOLETE */ | |
14 | /* OBSOLETE This program is distributed in the hope that it will be useful, */ | |
15 | /* OBSOLETE but WITHOUT ANY WARRANTY; without even the implied warranty of */ | |
16 | /* OBSOLETE MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the */ | |
17 | /* OBSOLETE GNU General Public License for more details. */ | |
18 | /* OBSOLETE */ | |
19 | /* OBSOLETE You should have received a copy of the GNU General Public License */ | |
20 | /* OBSOLETE along with this program; if not, write to the Free Software */ | |
21 | /* OBSOLETE Foundation, Inc., 59 Temple Place - Suite 330, */ | |
22 | /* OBSOLETE Boston, MA 02111-1307, USA. */ */ | |
23 | /* OBSOLETE */ | |
24 | /* OBSOLETE #include "defs.h" */ | |
25 | /* OBSOLETE #include "frame.h" */ | |
26 | /* OBSOLETE #include "inferior.h" */ | |
27 | /* OBSOLETE #include "gdbcore.h" */ | |
28 | /* OBSOLETE #include "regcache.h" */ | |
29 | /* OBSOLETE */ | |
30 | /* OBSOLETE #include <sys/param.h> */ | |
31 | /* OBSOLETE #include <sys/dir.h> */ | |
32 | /* OBSOLETE #include <sys/user.h> */ | |
33 | /* OBSOLETE #include <signal.h> */ | |
34 | /* OBSOLETE #include <sys/ioctl.h> */ | |
35 | /* OBSOLETE #include <fcntl.h> */ | |
36 | /* OBSOLETE */ | |
37 | /* OBSOLETE #include <sys/ptrace.h> */ | |
38 | /* OBSOLETE #include <machine/reg.h> */ | |
39 | /* OBSOLETE */ | |
40 | /* OBSOLETE #include <sys/file.h> */ | |
41 | /* OBSOLETE #include "gdb_stat.h" */ | |
42 | /* OBSOLETE #include <sys/core.h> */ | |
43 | /* OBSOLETE \f */ | |
44 | /* OBSOLETE */ | |
45 | /* OBSOLETE /* Machine-dependent code which would otherwise be in corefile.c */ */ | |
46 | /* OBSOLETE /* Work with core files, for GDB. */ */ | |
47 | /* OBSOLETE \f */ | |
48 | /* OBSOLETE */ | |
49 | /* OBSOLETE void */ | |
50 | /* OBSOLETE core_file_command (char *filename, int from_tty) */ | |
51 | /* OBSOLETE { */ | |
52 | /* OBSOLETE int val; */ | |
53 | /* OBSOLETE */ | |
54 | /* OBSOLETE /* Discard all vestiges of any previous core file */ | |
55 | /* OBSOLETE and mark data and stack spaces as empty. */ */ | |
56 | /* OBSOLETE */ | |
57 | /* OBSOLETE if (corefile) */ | |
58 | /* OBSOLETE xfree (corefile); */ | |
59 | /* OBSOLETE corefile = 0; */ | |
60 | /* OBSOLETE */ | |
61 | /* OBSOLETE if (corechan >= 0) */ | |
62 | /* OBSOLETE close (corechan); */ | |
63 | /* OBSOLETE corechan = -1; */ | |
64 | /* OBSOLETE */ | |
65 | /* OBSOLETE data_start = 0; */ | |
66 | /* OBSOLETE data_end = 0; */ | |
67 | /* OBSOLETE stack_start = STACK_END_ADDR; */ | |
68 | /* OBSOLETE stack_end = STACK_END_ADDR; */ | |
69 | /* OBSOLETE */ | |
70 | /* OBSOLETE /* Now, if a new core file was specified, open it and digest it. */ */ | |
71 | /* OBSOLETE */ | |
72 | /* OBSOLETE if (filename) */ | |
73 | /* OBSOLETE { */ | |
74 | /* OBSOLETE filename = tilde_expand (filename); */ | |
75 | /* OBSOLETE make_cleanup (xfree, filename); */ | |
76 | /* OBSOLETE */ | |
77 | /* OBSOLETE if (have_inferior_p ()) */ | |
78 | /* OBSOLETE error ("To look at a core file, you must kill the program with \"kill\"."); */ | |
79 | /* OBSOLETE corechan = open (filename, O_RDONLY, 0); */ | |
80 | /* OBSOLETE if (corechan < 0) */ | |
81 | /* OBSOLETE perror_with_name (filename); */ | |
82 | /* OBSOLETE */ | |
83 | /* OBSOLETE { */ | |
84 | /* OBSOLETE struct core corestr; */ | |
85 | /* OBSOLETE */ | |
86 | /* OBSOLETE val = myread (corechan, &corestr, sizeof corestr); */ | |
87 | /* OBSOLETE if (val < 0) */ | |
88 | /* OBSOLETE perror_with_name (filename); */ | |
89 | /* OBSOLETE if (corestr.c_magic != CORE_MAGIC) */ | |
90 | /* OBSOLETE error ("\"%s\" does not appear to be a core dump file (magic 0x%x, expected 0x%x)", */ | |
91 | /* OBSOLETE filename, corestr.c_magic, (int) CORE_MAGIC); */ | |
92 | /* OBSOLETE else if (sizeof (struct core) != corestr.c_len) */ | |
93 | /* OBSOLETE error ("\"%s\" has an invalid struct core length (%d, expected %d)", */ | |
94 | /* OBSOLETE filename, corestr.c_len, (int) sizeof (struct core)); */ | |
95 | /* OBSOLETE */ | |
96 | /* OBSOLETE data_start = exec_data_start; */ | |
97 | /* OBSOLETE data_end = data_start + corestr.c_dsize; */ | |
98 | /* OBSOLETE stack_start = stack_end - corestr.c_ssize; */ | |
99 | /* OBSOLETE data_offset = sizeof corestr; */ | |
100 | /* OBSOLETE stack_offset = sizeof corestr + corestr.c_dsize; */ | |
101 | /* OBSOLETE */ | |
102 | /* OBSOLETE memcpy (registers, &corestr.c_regs, sizeof corestr.c_regs); */ | |
103 | /* OBSOLETE */ | |
104 | /* OBSOLETE memcpy (®isters[REGISTER_BYTE (FP0_REGNUM)], */ | |
105 | /* OBSOLETE corestr.c_fpu.f_fpstatus.f_st, */ | |
106 | /* OBSOLETE sizeof corestr.c_fpu.f_fpstatus.f_st); */ | |
107 | /* OBSOLETE memcpy (®isters[REGISTER_BYTE (FPC_REGNUM)], */ | |
108 | /* OBSOLETE &corestr.c_fpu.f_fpstatus.f_ctrl, */ | |
109 | /* OBSOLETE sizeof corestr.c_fpu.f_fpstatus - */ | |
110 | /* OBSOLETE sizeof corestr.c_fpu.f_fpstatus.f_st); */ | |
111 | /* OBSOLETE */ | |
112 | /* OBSOLETE /* the struct aouthdr of sun coff is not the struct exec stored */ | |
113 | /* OBSOLETE in the core file. */ */ | |
114 | /* OBSOLETE memcpy (&core_aouthdr, &corestr.c_aouthdr, sizeof (struct exec)); */ | |
115 | /* OBSOLETE #ifndef COFF_ENCAPSULATE */ | |
116 | /* OBSOLETE core_aouthdr.magic = corestr.c_aouthdr.a_info; */ | |
117 | /* OBSOLETE core_aouthdr.vstamp = /*SUNVERSION */ 31252; */ | |
118 | /* OBSOLETE #endif */ | |
119 | /* OBSOLETE printf_unfiltered ("Core file is from \"%s\".\n", corestr.c_cmdname); */ | |
120 | /* OBSOLETE if (corestr.c_signo > 0) */ | |
121 | /* OBSOLETE printf_unfiltered ("Program terminated with signal %d, %s.\n", */ | |
122 | /* OBSOLETE corestr.c_signo, safe_strsignal (corestr.c_signo)); */ | |
123 | /* OBSOLETE } */ | |
124 | /* OBSOLETE if (filename[0] == '/') */ | |
125 | /* OBSOLETE corefile = savestring (filename, strlen (filename)); */ | |
126 | /* OBSOLETE else */ | |
127 | /* OBSOLETE { */ | |
128 | /* OBSOLETE corefile = concat (current_directory, "/", filename, NULL); */ | |
129 | /* OBSOLETE } */ | |
130 | /* OBSOLETE */ | |
131 | /* OBSOLETE flush_cached_frames (); */ | |
132 | /* OBSOLETE select_frame (get_current_frame (), 0); */ | |
133 | /* OBSOLETE */ | |
134 | /* OBSOLETE validate_files (); */ | |
135 | /* OBSOLETE } */ | |
136 | /* OBSOLETE else if (from_tty) */ | |
137 | /* OBSOLETE printf_unfiltered ("No core file now.\n"); */ | |
138 | /* OBSOLETE } */ | |
139 | /* OBSOLETE */ | |
140 | /* OBSOLETE i387_to_double (char *from, char *to) */ | |
141 | /* OBSOLETE { */ | |
142 | /* OBSOLETE long *lp; */ | |
143 | /* OBSOLETE /* push extended mode on 387 stack, then pop in double mode */ | |
144 | /* OBSOLETE */ | |
145 | /* OBSOLETE * first, set exception masks so no error is generated - */ | |
146 | /* OBSOLETE * number will be rounded to inf or 0, if necessary */ | |
147 | /* OBSOLETE */ */ | |
148 | /* OBSOLETE asm ("pushl %eax"); /* grab a stack slot */ */ | |
149 | /* OBSOLETE asm ("fstcw (%esp)"); /* get 387 control word */ */ | |
150 | /* OBSOLETE asm ("movl (%esp),%eax"); /* save old value */ */ | |
151 | /* OBSOLETE asm ("orl $0x3f,%eax"); /* mask all exceptions */ */ | |
152 | /* OBSOLETE asm ("pushl %eax"); */ | |
153 | /* OBSOLETE asm ("fldcw (%esp)"); /* load new value into 387 */ */ | |
154 | /* OBSOLETE */ | |
155 | /* OBSOLETE asm ("movl 8(%ebp),%eax"); */ | |
156 | /* OBSOLETE asm ("fldt (%eax)"); /* push extended number on 387 stack */ */ | |
157 | /* OBSOLETE asm ("fwait"); */ | |
158 | /* OBSOLETE asm ("movl 12(%ebp),%eax"); */ | |
159 | /* OBSOLETE asm ("fstpl (%eax)"); /* pop double */ */ | |
160 | /* OBSOLETE asm ("fwait"); */ | |
161 | /* OBSOLETE */ | |
162 | /* OBSOLETE asm ("popl %eax"); /* flush modified control word */ */ | |
163 | /* OBSOLETE asm ("fnclex"); /* clear exceptions */ */ | |
164 | /* OBSOLETE asm ("fldcw (%esp)"); /* restore original control word */ */ | |
165 | /* OBSOLETE asm ("popl %eax"); /* flush saved copy */ */ | |
166 | /* OBSOLETE } */ | |
167 | /* OBSOLETE */ | |
168 | /* OBSOLETE double_to_i387 (char *from, char *to) */ | |
169 | /* OBSOLETE { */ | |
170 | /* OBSOLETE /* push double mode on 387 stack, then pop in extended mode */ | |
171 | /* OBSOLETE * no errors are possible because every 64-bit pattern */ | |
172 | /* OBSOLETE * can be converted to an extended */ | |
173 | /* OBSOLETE */ */ | |
174 | /* OBSOLETE asm ("movl 8(%ebp),%eax"); */ | |
175 | /* OBSOLETE asm ("fldl (%eax)"); */ | |
176 | /* OBSOLETE asm ("fwait"); */ | |
177 | /* OBSOLETE asm ("movl 12(%ebp),%eax"); */ | |
178 | /* OBSOLETE asm ("fstpt (%eax)"); */ | |
179 | /* OBSOLETE asm ("fwait"); */ | |
180 | /* OBSOLETE } */ | |
181 | /* OBSOLETE */ | |
182 | /* OBSOLETE void */ | |
183 | /* OBSOLETE fetch_inferior_registers (int regno) */ | |
184 | /* OBSOLETE { */ | |
185 | /* OBSOLETE struct regs inferior_registers; */ | |
186 | /* OBSOLETE struct fp_state inferior_fp_registers; */ | |
187 | /* OBSOLETE */ | |
188 | /* OBSOLETE registers_fetched (); */ | |
189 | /* OBSOLETE */ | |
39f77062 | 190 | /* OBSOLETE ptrace (PTRACE_GETREGS, PIDGET (inferior_ptid), */ |
24f89b68 | 191 | /* OBSOLETE (PTRACE_ARG3_TYPE) & inferior_registers); */ |
39f77062 | 192 | /* OBSOLETE ptrace (PTRACE_GETFPREGS, PIDGET (inferior_ptid), */ |
24f89b68 AC |
193 | /* OBSOLETE (PTRACE_ARG3_TYPE) & inferior_fp_registers); */ |
194 | /* OBSOLETE */ | |
195 | /* OBSOLETE memcpy (registers, &inferior_registers, sizeof inferior_registers); */ | |
196 | /* OBSOLETE */ | |
197 | /* OBSOLETE memcpy (®isters[REGISTER_BYTE (FP0_REGNUM)], inferior_fp_registers.f_st, */ | |
198 | /* OBSOLETE sizeof inferior_fp_registers.f_st); */ | |
199 | /* OBSOLETE memcpy (®isters[REGISTER_BYTE (FPC_REGNUM)], */ | |
200 | /* OBSOLETE &inferior_fp_registers.f_ctrl, */ | |
201 | /* OBSOLETE sizeof inferior_fp_registers - sizeof inferior_fp_registers.f_st); */ | |
202 | /* OBSOLETE } */ | |
203 | /* OBSOLETE */ | |
204 | /* OBSOLETE /* Store our register values back into the inferior. */ | |
205 | /* OBSOLETE If REGNO is -1, do this for all registers. */ | |
206 | /* OBSOLETE Otherwise, REGNO specifies which register (so we can save time). */ */ | |
207 | /* OBSOLETE */ | |
208 | /* OBSOLETE void */ | |
209 | /* OBSOLETE store_inferior_registers (int regno) */ | |
210 | /* OBSOLETE { */ | |
211 | /* OBSOLETE struct regs inferior_registers; */ | |
212 | /* OBSOLETE struct fp_state inferior_fp_registers; */ | |
213 | /* OBSOLETE */ | |
214 | /* OBSOLETE memcpy (&inferior_registers, registers, 20 * 4); */ | |
215 | /* OBSOLETE */ | |
216 | /* OBSOLETE memcpy (inferior_fp_registers.f_st, */ | |
217 | /* OBSOLETE ®isters[REGISTER_BYTE (FP0_REGNUM)], */ | |
218 | /* OBSOLETE sizeof inferior_fp_registers.f_st); */ | |
219 | /* OBSOLETE memcpy (&inferior_fp_registers.f_ctrl, */ | |
220 | /* OBSOLETE ®isters[REGISTER_BYTE (FPC_REGNUM)], */ | |
221 | /* OBSOLETE sizeof inferior_fp_registers - sizeof inferior_fp_registers.f_st); */ | |
222 | /* OBSOLETE */ | |
223 | /* OBSOLETE #ifdef PTRACE_FP_BUG */ | |
224 | /* OBSOLETE if (regno == FP_REGNUM || regno == -1) */ | |
225 | /* OBSOLETE /* Storing the frame pointer requires a gross hack, in which an */ | |
226 | /* OBSOLETE instruction that moves eax into ebp gets single-stepped. */ */ | |
227 | /* OBSOLETE { */ | |
228 | /* OBSOLETE int stack = inferior_registers.r_reg[SP_REGNUM]; */ | |
39f77062 | 229 | /* OBSOLETE int stuff = ptrace (PTRACE_PEEKDATA, PIDGET (inferior_ptid), */ |
24f89b68 AC |
230 | /* OBSOLETE (PTRACE_ARG3_TYPE) stack); */ |
231 | /* OBSOLETE int reg = inferior_registers.r_reg[EAX]; */ | |
232 | /* OBSOLETE inferior_registers.r_reg[EAX] = */ | |
233 | /* OBSOLETE inferior_registers.r_reg[FP_REGNUM]; */ | |
39f77062 | 234 | /* OBSOLETE ptrace (PTRACE_SETREGS, PIDGET (inferior_ptid), */ |
24f89b68 | 235 | /* OBSOLETE (PTRACE_ARG3_TYPE) & inferior_registers); */ |
39f77062 | 236 | /* OBSOLETE ptrace (PTRACE_POKEDATA, PIDGET (inferior_ptid), (PTRACE_ARG3_TYPE) stack, */ |
24f89b68 | 237 | /* OBSOLETE 0xc589); */ |
39f77062 | 238 | /* OBSOLETE ptrace (PTRACE_SINGLESTEP, PIDGET (inferior_ptid), (PTRACE_ARG3_TYPE) stack, */ |
24f89b68 AC |
239 | /* OBSOLETE 0); */ |
240 | /* OBSOLETE wait (0); */ | |
39f77062 | 241 | /* OBSOLETE ptrace (PTRACE_POKEDATA, PIDGET (inferior_ptid), (PTRACE_ARG3_TYPE) stack, */ |
24f89b68 AC |
242 | /* OBSOLETE stuff); */ |
243 | /* OBSOLETE inferior_registers.r_reg[EAX] = reg; */ | |
244 | /* OBSOLETE } */ | |
245 | /* OBSOLETE #endif */ | |
39f77062 | 246 | /* OBSOLETE ptrace (PTRACE_SETREGS, PIDGET (inferior_ptid), */ |
24f89b68 | 247 | /* OBSOLETE (PTRACE_ARG3_TYPE) & inferior_registers); */ |
39f77062 | 248 | /* OBSOLETE ptrace (PTRACE_SETFPREGS, PIDGET (inferior_ptid), */ |
24f89b68 AC |
249 | /* OBSOLETE (PTRACE_ARG3_TYPE) & inferior_fp_registers); */ |
250 | /* OBSOLETE } */ |