| /* OBSOLETE /* Native support for Sun 386i's for GDB, the GNU debugger. */ |
| /* OBSOLETE Copyright 1986, 1987, 1989, 1991, 1992, 1993, 1995, 1999, 2000, 2001 */ |
| /* OBSOLETE Free Software Foundation, Inc. */ |
| /* OBSOLETE Changes for sun386i by Jean Daniel Fekete (jdf@litp.univ-p6-7.fr), */ |
| /* OBSOLETE C2V Paris, April 89. */ |
| /* OBSOLETE */ |
| /* OBSOLETE This file is part of GDB. */ |
| /* OBSOLETE */ |
| /* OBSOLETE This program is free software; you can redistribute it and/or modify */ |
| /* OBSOLETE it under the terms of the GNU General Public License as published by */ |
| /* OBSOLETE the Free Software Foundation; either version 2 of the License, or */ |
| /* OBSOLETE (at your option) any later version. */ |
| /* OBSOLETE */ |
| /* OBSOLETE This program is distributed in the hope that it will be useful, */ |
| /* OBSOLETE but WITHOUT ANY WARRANTY; without even the implied warranty of */ |
| /* OBSOLETE MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the */ |
| /* OBSOLETE GNU General Public License for more details. */ |
| /* OBSOLETE */ |
| /* OBSOLETE You should have received a copy of the GNU General Public License */ |
| /* OBSOLETE along with this program; if not, write to the Free Software */ |
| /* OBSOLETE Foundation, Inc., 59 Temple Place - Suite 330, */ |
| /* OBSOLETE Boston, MA 02111-1307, USA. */ */ |
| /* OBSOLETE */ |
| /* OBSOLETE #include "defs.h" */ |
| /* OBSOLETE #include "frame.h" */ |
| /* OBSOLETE #include "inferior.h" */ |
| /* OBSOLETE #include "gdbcore.h" */ |
| /* OBSOLETE #include "regcache.h" */ |
| /* OBSOLETE */ |
| /* OBSOLETE #include <sys/param.h> */ |
| /* OBSOLETE #include <sys/dir.h> */ |
| /* OBSOLETE #include <sys/user.h> */ |
| /* OBSOLETE #include <signal.h> */ |
| /* OBSOLETE #include <sys/ioctl.h> */ |
| /* OBSOLETE #include <fcntl.h> */ |
| /* OBSOLETE */ |
| /* OBSOLETE #include <sys/ptrace.h> */ |
| /* OBSOLETE #include <machine/reg.h> */ |
| /* OBSOLETE */ |
| /* OBSOLETE #include <sys/file.h> */ |
| /* OBSOLETE #include "gdb_stat.h" */ |
| /* OBSOLETE #include <sys/core.h> */ |
| /* OBSOLETE */ |
| /* OBSOLETE */ |
| /* OBSOLETE /* Machine-dependent code which would otherwise be in corefile.c */ */ |
| /* OBSOLETE /* Work with core files, for GDB. */ */ |
| /* OBSOLETE */ |
| /* OBSOLETE */ |
| /* OBSOLETE void */ |
| /* OBSOLETE core_file_command (char *filename, int from_tty) */ |
| /* OBSOLETE { */ |
| /* OBSOLETE int val; */ |
| /* OBSOLETE */ |
| /* OBSOLETE /* Discard all vestiges of any previous core file */ |
| /* OBSOLETE and mark data and stack spaces as empty. */ */ |
| /* OBSOLETE */ |
| /* OBSOLETE if (corefile) */ |
| /* OBSOLETE xfree (corefile); */ |
| /* OBSOLETE corefile = 0; */ |
| /* OBSOLETE */ |
| /* OBSOLETE if (corechan >= 0) */ |
| /* OBSOLETE close (corechan); */ |
| /* OBSOLETE corechan = -1; */ |
| /* OBSOLETE */ |
| /* OBSOLETE data_start = 0; */ |
| /* OBSOLETE data_end = 0; */ |
| /* OBSOLETE stack_start = STACK_END_ADDR; */ |
| /* OBSOLETE stack_end = STACK_END_ADDR; */ |
| /* OBSOLETE */ |
| /* OBSOLETE /* Now, if a new core file was specified, open it and digest it. */ */ |
| /* OBSOLETE */ |
| /* OBSOLETE if (filename) */ |
| /* OBSOLETE { */ |
| /* OBSOLETE filename = tilde_expand (filename); */ |
| /* OBSOLETE make_cleanup (xfree, filename); */ |
| /* OBSOLETE */ |
| /* OBSOLETE if (have_inferior_p ()) */ |
| /* OBSOLETE error ("To look at a core file, you must kill the program with \"kill\"."); */ |
| /* OBSOLETE corechan = open (filename, O_RDONLY, 0); */ |
| /* OBSOLETE if (corechan < 0) */ |
| /* OBSOLETE perror_with_name (filename); */ |
| /* OBSOLETE */ |
| /* OBSOLETE { */ |
| /* OBSOLETE struct core corestr; */ |
| /* OBSOLETE */ |
| /* OBSOLETE val = myread (corechan, &corestr, sizeof corestr); */ |
| /* OBSOLETE if (val < 0) */ |
| /* OBSOLETE perror_with_name (filename); */ |
| /* OBSOLETE if (corestr.c_magic != CORE_MAGIC) */ |
| /* OBSOLETE error ("\"%s\" does not appear to be a core dump file (magic 0x%x, expected 0x%x)", */ |
| /* OBSOLETE filename, corestr.c_magic, (int) CORE_MAGIC); */ |
| /* OBSOLETE else if (sizeof (struct core) != corestr.c_len) */ |
| /* OBSOLETE error ("\"%s\" has an invalid struct core length (%d, expected %d)", */ |
| /* OBSOLETE filename, corestr.c_len, (int) sizeof (struct core)); */ |
| /* OBSOLETE */ |
| /* OBSOLETE data_start = exec_data_start; */ |
| /* OBSOLETE data_end = data_start + corestr.c_dsize; */ |
| /* OBSOLETE stack_start = stack_end - corestr.c_ssize; */ |
| /* OBSOLETE data_offset = sizeof corestr; */ |
| /* OBSOLETE stack_offset = sizeof corestr + corestr.c_dsize; */ |
| /* OBSOLETE */ |
| /* OBSOLETE memcpy (registers, &corestr.c_regs, sizeof corestr.c_regs); */ |
| /* OBSOLETE */ |
| /* OBSOLETE memcpy (®isters[REGISTER_BYTE (FP0_REGNUM)], */ |
| /* OBSOLETE corestr.c_fpu.f_fpstatus.f_st, */ |
| /* OBSOLETE sizeof corestr.c_fpu.f_fpstatus.f_st); */ |
| /* OBSOLETE memcpy (®isters[REGISTER_BYTE (FPC_REGNUM)], */ |
| /* OBSOLETE &corestr.c_fpu.f_fpstatus.f_ctrl, */ |
| /* OBSOLETE sizeof corestr.c_fpu.f_fpstatus - */ |
| /* OBSOLETE sizeof corestr.c_fpu.f_fpstatus.f_st); */ |
| /* OBSOLETE */ |
| /* OBSOLETE /* the struct aouthdr of sun coff is not the struct exec stored */ |
| /* OBSOLETE in the core file. */ */ |
| /* OBSOLETE memcpy (&core_aouthdr, &corestr.c_aouthdr, sizeof (struct exec)); */ |
| /* OBSOLETE #ifndef COFF_ENCAPSULATE */ |
| /* OBSOLETE core_aouthdr.magic = corestr.c_aouthdr.a_info; */ |
| /* OBSOLETE core_aouthdr.vstamp = /*SUNVERSION */ 31252; */ |
| /* OBSOLETE #endif */ |
| /* OBSOLETE printf_unfiltered ("Core file is from \"%s\".\n", corestr.c_cmdname); */ |
| /* OBSOLETE if (corestr.c_signo > 0) */ |
| /* OBSOLETE printf_unfiltered ("Program terminated with signal %d, %s.\n", */ |
| /* OBSOLETE corestr.c_signo, safe_strsignal (corestr.c_signo)); */ |
| /* OBSOLETE } */ |
| /* OBSOLETE if (filename[0] == '/') */ |
| /* OBSOLETE corefile = savestring (filename, strlen (filename)); */ |
| /* OBSOLETE else */ |
| /* OBSOLETE { */ |
| /* OBSOLETE corefile = concat (current_directory, "/", filename, NULL); */ |
| /* OBSOLETE } */ |
| /* OBSOLETE */ |
| /* OBSOLETE flush_cached_frames (); */ |
| /* OBSOLETE select_frame (get_current_frame (), 0); */ |
| /* OBSOLETE */ |
| /* OBSOLETE validate_files (); */ |
| /* OBSOLETE } */ |
| /* OBSOLETE else if (from_tty) */ |
| /* OBSOLETE printf_unfiltered ("No core file now.\n"); */ |
| /* OBSOLETE } */ |
| /* OBSOLETE */ |
| /* OBSOLETE i387_to_double (char *from, char *to) */ |
| /* OBSOLETE { */ |
| /* OBSOLETE long *lp; */ |
| /* OBSOLETE /* push extended mode on 387 stack, then pop in double mode */ |
| /* OBSOLETE */ |
| /* OBSOLETE * first, set exception masks so no error is generated - */ |
| /* OBSOLETE * number will be rounded to inf or 0, if necessary */ |
| /* OBSOLETE */ */ |
| /* OBSOLETE asm ("pushl %eax"); /* grab a stack slot */ */ |
| /* OBSOLETE asm ("fstcw (%esp)"); /* get 387 control word */ */ |
| /* OBSOLETE asm ("movl (%esp),%eax"); /* save old value */ */ |
| /* OBSOLETE asm ("orl $0x3f,%eax"); /* mask all exceptions */ */ |
| /* OBSOLETE asm ("pushl %eax"); */ |
| /* OBSOLETE asm ("fldcw (%esp)"); /* load new value into 387 */ */ |
| /* OBSOLETE */ |
| /* OBSOLETE asm ("movl 8(%ebp),%eax"); */ |
| /* OBSOLETE asm ("fldt (%eax)"); /* push extended number on 387 stack */ */ |
| /* OBSOLETE asm ("fwait"); */ |
| /* OBSOLETE asm ("movl 12(%ebp),%eax"); */ |
| /* OBSOLETE asm ("fstpl (%eax)"); /* pop double */ */ |
| /* OBSOLETE asm ("fwait"); */ |
| /* OBSOLETE */ |
| /* OBSOLETE asm ("popl %eax"); /* flush modified control word */ */ |
| /* OBSOLETE asm ("fnclex"); /* clear exceptions */ */ |
| /* OBSOLETE asm ("fldcw (%esp)"); /* restore original control word */ */ |
| /* OBSOLETE asm ("popl %eax"); /* flush saved copy */ */ |
| /* OBSOLETE } */ |
| /* OBSOLETE */ |
| /* OBSOLETE double_to_i387 (char *from, char *to) */ |
| /* OBSOLETE { */ |
| /* OBSOLETE /* push double mode on 387 stack, then pop in extended mode */ |
| /* OBSOLETE * no errors are possible because every 64-bit pattern */ |
| /* OBSOLETE * can be converted to an extended */ |
| /* OBSOLETE */ */ |
| /* OBSOLETE asm ("movl 8(%ebp),%eax"); */ |
| /* OBSOLETE asm ("fldl (%eax)"); */ |
| /* OBSOLETE asm ("fwait"); */ |
| /* OBSOLETE asm ("movl 12(%ebp),%eax"); */ |
| /* OBSOLETE asm ("fstpt (%eax)"); */ |
| /* OBSOLETE asm ("fwait"); */ |
| /* OBSOLETE } */ |
| /* OBSOLETE */ |
| /* OBSOLETE void */ |
| /* OBSOLETE fetch_inferior_registers (int regno) */ |
| /* OBSOLETE { */ |
| /* OBSOLETE struct regs inferior_registers; */ |
| /* OBSOLETE struct fp_state inferior_fp_registers; */ |
| /* OBSOLETE */ |
| /* OBSOLETE registers_fetched (); */ |
| /* OBSOLETE */ |
| /* OBSOLETE ptrace (PTRACE_GETREGS, inferior_pid, */ |
| /* OBSOLETE (PTRACE_ARG3_TYPE) & inferior_registers); */ |
| /* OBSOLETE ptrace (PTRACE_GETFPREGS, inferior_pid, */ |
| /* OBSOLETE (PTRACE_ARG3_TYPE) & inferior_fp_registers); */ |
| /* OBSOLETE */ |
| /* OBSOLETE memcpy (registers, &inferior_registers, sizeof inferior_registers); */ |
| /* OBSOLETE */ |
| /* OBSOLETE memcpy (®isters[REGISTER_BYTE (FP0_REGNUM)], inferior_fp_registers.f_st, */ |
| /* OBSOLETE sizeof inferior_fp_registers.f_st); */ |
| /* OBSOLETE memcpy (®isters[REGISTER_BYTE (FPC_REGNUM)], */ |
| /* OBSOLETE &inferior_fp_registers.f_ctrl, */ |
| /* OBSOLETE sizeof inferior_fp_registers - sizeof inferior_fp_registers.f_st); */ |
| /* OBSOLETE } */ |
| /* OBSOLETE */ |
| /* OBSOLETE /* Store our register values back into the inferior. */ |
| /* OBSOLETE If REGNO is -1, do this for all registers. */ |
| /* OBSOLETE Otherwise, REGNO specifies which register (so we can save time). */ */ |
| /* OBSOLETE */ |
| /* OBSOLETE void */ |
| /* OBSOLETE store_inferior_registers (int regno) */ |
| /* OBSOLETE { */ |
| /* OBSOLETE struct regs inferior_registers; */ |
| /* OBSOLETE struct fp_state inferior_fp_registers; */ |
| /* OBSOLETE */ |
| /* OBSOLETE memcpy (&inferior_registers, registers, 20 * 4); */ |
| /* OBSOLETE */ |
| /* OBSOLETE memcpy (inferior_fp_registers.f_st, */ |
| /* OBSOLETE ®isters[REGISTER_BYTE (FP0_REGNUM)], */ |
| /* OBSOLETE sizeof inferior_fp_registers.f_st); */ |
| /* OBSOLETE memcpy (&inferior_fp_registers.f_ctrl, */ |
| /* OBSOLETE ®isters[REGISTER_BYTE (FPC_REGNUM)], */ |
| /* OBSOLETE sizeof inferior_fp_registers - sizeof inferior_fp_registers.f_st); */ |
| /* OBSOLETE */ |
| /* OBSOLETE #ifdef PTRACE_FP_BUG */ |
| /* OBSOLETE if (regno == FP_REGNUM || regno == -1) */ |
| /* OBSOLETE /* Storing the frame pointer requires a gross hack, in which an */ |
| /* OBSOLETE instruction that moves eax into ebp gets single-stepped. */ */ |
| /* OBSOLETE { */ |
| /* OBSOLETE int stack = inferior_registers.r_reg[SP_REGNUM]; */ |
| /* OBSOLETE int stuff = ptrace (PTRACE_PEEKDATA, inferior_pid, */ |
| /* OBSOLETE (PTRACE_ARG3_TYPE) stack); */ |
| /* OBSOLETE int reg = inferior_registers.r_reg[EAX]; */ |
| /* OBSOLETE inferior_registers.r_reg[EAX] = */ |
| /* OBSOLETE inferior_registers.r_reg[FP_REGNUM]; */ |
| /* OBSOLETE ptrace (PTRACE_SETREGS, inferior_pid, */ |
| /* OBSOLETE (PTRACE_ARG3_TYPE) & inferior_registers); */ |
| /* OBSOLETE ptrace (PTRACE_POKEDATA, inferior_pid, (PTRACE_ARG3_TYPE) stack, */ |
| /* OBSOLETE 0xc589); */ |
| /* OBSOLETE ptrace (PTRACE_SINGLESTEP, inferior_pid, (PTRACE_ARG3_TYPE) stack, */ |
| /* OBSOLETE 0); */ |
| /* OBSOLETE wait (0); */ |
| /* OBSOLETE ptrace (PTRACE_POKEDATA, inferior_pid, (PTRACE_ARG3_TYPE) stack, */ |
| /* OBSOLETE stuff); */ |
| /* OBSOLETE inferior_registers.r_reg[EAX] = reg; */ |
| /* OBSOLETE } */ |
| /* OBSOLETE #endif */ |
| /* OBSOLETE ptrace (PTRACE_SETREGS, inferior_pid, */ |
| /* OBSOLETE (PTRACE_ARG3_TYPE) & inferior_registers); */ |
| /* OBSOLETE ptrace (PTRACE_SETFPREGS, inferior_pid, */ |
| /* OBSOLETE (PTRACE_ARG3_TYPE) & inferior_fp_registers); */ |
| /* OBSOLETE } */ |
