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binutils-gdb/gdb/sun386-nat.c

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/* 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 (&registers[REGISTER_BYTE (FP0_REGNUM)], */
/* OBSOLETE corestr.c_fpu.f_fpstatus.f_st, */
/* OBSOLETE sizeof corestr.c_fpu.f_fpstatus.f_st); */
/* OBSOLETE memcpy (&registers[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, PIDGET (inferior_ptid), */
/* OBSOLETE (PTRACE_ARG3_TYPE) & inferior_registers); */
/* OBSOLETE ptrace (PTRACE_GETFPREGS, PIDGET (inferior_ptid), */
/* OBSOLETE (PTRACE_ARG3_TYPE) & inferior_fp_registers); */
/* OBSOLETE */
/* OBSOLETE memcpy (registers, &inferior_registers, sizeof inferior_registers); */
/* OBSOLETE */
/* OBSOLETE memcpy (&registers[REGISTER_BYTE (FP0_REGNUM)], inferior_fp_registers.f_st, */
/* OBSOLETE sizeof inferior_fp_registers.f_st); */
/* OBSOLETE memcpy (&registers[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 &registers[REGISTER_BYTE (FP0_REGNUM)], */
/* OBSOLETE sizeof inferior_fp_registers.f_st); */
/* OBSOLETE memcpy (&inferior_fp_registers.f_ctrl, */
/* OBSOLETE &registers[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, PIDGET (inferior_ptid), */
/* 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, PIDGET (inferior_ptid), */
/* OBSOLETE (PTRACE_ARG3_TYPE) & inferior_registers); */
/* OBSOLETE ptrace (PTRACE_POKEDATA, PIDGET (inferior_ptid), (PTRACE_ARG3_TYPE) stack, */
/* OBSOLETE 0xc589); */
/* OBSOLETE ptrace (PTRACE_SINGLESTEP, PIDGET (inferior_ptid), (PTRACE_ARG3_TYPE) stack, */
/* OBSOLETE 0); */
/* OBSOLETE wait (0); */
/* OBSOLETE ptrace (PTRACE_POKEDATA, PIDGET (inferior_ptid), (PTRACE_ARG3_TYPE) stack, */
/* OBSOLETE stuff); */
/* OBSOLETE inferior_registers.r_reg[EAX] = reg; */
/* OBSOLETE } */
/* OBSOLETE #endif */
/* OBSOLETE ptrace (PTRACE_SETREGS, PIDGET (inferior_ptid), */
/* OBSOLETE (PTRACE_ARG3_TYPE) & inferior_registers); */
/* OBSOLETE ptrace (PTRACE_SETFPREGS, PIDGET (inferior_ptid), */
/* OBSOLETE (PTRACE_ARG3_TYPE) & inferior_fp_registers); */
/* OBSOLETE } */
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