| 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 */ |
| 190 | /* OBSOLETE ptrace (PTRACE_GETREGS, inferior_pid, */ |
| 191 | /* OBSOLETE (PTRACE_ARG3_TYPE) & inferior_registers); */ |
| 192 | /* OBSOLETE ptrace (PTRACE_GETFPREGS, inferior_pid, */ |
| 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]; */ |
| 229 | /* OBSOLETE int stuff = ptrace (PTRACE_PEEKDATA, inferior_pid, */ |
| 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]; */ |
| 234 | /* OBSOLETE ptrace (PTRACE_SETREGS, inferior_pid, */ |
| 235 | /* OBSOLETE (PTRACE_ARG3_TYPE) & inferior_registers); */ |
| 236 | /* OBSOLETE ptrace (PTRACE_POKEDATA, inferior_pid, (PTRACE_ARG3_TYPE) stack, */ |
| 237 | /* OBSOLETE 0xc589); */ |
| 238 | /* OBSOLETE ptrace (PTRACE_SINGLESTEP, inferior_pid, (PTRACE_ARG3_TYPE) stack, */ |
| 239 | /* OBSOLETE 0); */ |
| 240 | /* OBSOLETE wait (0); */ |
| 241 | /* OBSOLETE ptrace (PTRACE_POKEDATA, inferior_pid, (PTRACE_ARG3_TYPE) stack, */ |
| 242 | /* OBSOLETE stuff); */ |
| 243 | /* OBSOLETE inferior_registers.r_reg[EAX] = reg; */ |
| 244 | /* OBSOLETE } */ |
| 245 | /* OBSOLETE #endif */ |
| 246 | /* OBSOLETE ptrace (PTRACE_SETREGS, inferior_pid, */ |
| 247 | /* OBSOLETE (PTRACE_ARG3_TYPE) & inferior_registers); */ |
| 248 | /* OBSOLETE ptrace (PTRACE_SETFPREGS, inferior_pid, */ |
| 249 | /* OBSOLETE (PTRACE_ARG3_TYPE) & inferior_fp_registers); */ |
| 250 | /* OBSOLETE } */ |