From 071ea11e85eb9d529cc5eb3d35f6247466a21b99 Mon Sep 17 00:00:00 2001 From: Stan Shebs Date: Fri, 16 Apr 1999 01:34:07 +0000 Subject: Initial creation of sourceware repository --- gdb/sun386-nat.c | 258 ------------------------------------------------------- 1 file changed, 258 deletions(-) delete mode 100644 gdb/sun386-nat.c (limited to 'gdb/sun386-nat.c') diff --git a/gdb/sun386-nat.c b/gdb/sun386-nat.c deleted file mode 100644 index 1abb4bb..0000000 --- a/gdb/sun386-nat.c +++ /dev/null @@ -1,258 +0,0 @@ -/* Native support for Sun 386i's for GDB, the GNU debugger. - Copyright (C) 1986, 1987, 1989, 1991, 1992 Free Software Foundation, Inc. - Changes for sun386i by Jean Daniel Fekete (jdf@litp.univ-p6-7.fr), - C2V Paris, April 89. - -This file is part of GDB. - -This program is free software; you can redistribute it and/or modify -it under the terms of the GNU General Public License as published by -the Free Software Foundation; either version 2 of the License, or -(at your option) any later version. - -This program is distributed in the hope that it will be useful, -but WITHOUT ANY WARRANTY; without even the implied warranty of -MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -GNU General Public License for more details. - -You should have received a copy of the GNU General Public License -along with this program; if not, write to the Free Software -Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ - -#include "defs.h" -#include "frame.h" -#include "inferior.h" -#include "gdbcore.h" - -#include -#include -#include -#include -#include -#include - -#include -#include - -#include -#include "gdb_stat.h" -#include - - -/* Machine-dependent code which would otherwise be in corefile.c */ -/* Work with core files, for GDB. */ - - -void -core_file_command (filename, from_tty) - char *filename; - int from_tty; -{ - int val; - extern char registers[]; - - /* Discard all vestiges of any previous core file - and mark data and stack spaces as empty. */ - - if (corefile) - free (corefile); - corefile = 0; - - if (corechan >= 0) - close (corechan); - corechan = -1; - - data_start = 0; - data_end = 0; - stack_start = STACK_END_ADDR; - stack_end = STACK_END_ADDR; - - /* Now, if a new core file was specified, open it and digest it. */ - - if (filename) - { - filename = tilde_expand (filename); - make_cleanup (free, filename); - - if (have_inferior_p ()) - error ("To look at a core file, you must kill the program with \"kill\"."); - corechan = open (filename, O_RDONLY, 0); - if (corechan < 0) - perror_with_name (filename); - - { - struct core corestr; - - val = myread (corechan, &corestr, sizeof corestr); - if (val < 0) - perror_with_name (filename); - if (corestr.c_magic != CORE_MAGIC) - error ("\"%s\" does not appear to be a core dump file (magic 0x%x, expected 0x%x)", - filename, corestr.c_magic, (int) CORE_MAGIC); - else if (sizeof (struct core) != corestr.c_len) - error ("\"%s\" has an invalid struct core length (%d, expected %d)", - filename, corestr.c_len, (int) sizeof (struct core)); - - data_start = exec_data_start; - data_end = data_start + corestr.c_dsize; - stack_start = stack_end - corestr.c_ssize; - data_offset = sizeof corestr; - stack_offset = sizeof corestr + corestr.c_dsize; - - memcpy (registers, &corestr.c_regs, sizeof corestr.c_regs); - - memcpy (®isters[REGISTER_BYTE (FP0_REGNUM)], - corestr.c_fpu.f_fpstatus.f_st, - sizeof corestr.c_fpu.f_fpstatus.f_st); - memcpy (®isters[REGISTER_BYTE (FPC_REGNUM)], - &corestr.c_fpu.f_fpstatus.f_ctrl, - sizeof corestr.c_fpu.f_fpstatus - - sizeof corestr.c_fpu.f_fpstatus.f_st); - - /* the struct aouthdr of sun coff is not the struct exec stored - in the core file. */ - memcpy (&core_aouthdr, &corestr.c_aouthdr, sizeof (struct exec)); -#ifndef COFF_ENCAPSULATE - core_aouthdr.magic = corestr.c_aouthdr.a_info; - core_aouthdr.vstamp = /*SUNVERSION*/ 31252; -#endif - printf_unfiltered ("Core file is from \"%s\".\n", corestr.c_cmdname); - if (corestr.c_signo > 0) - printf_unfiltered ("Program terminated with signal %d, %s.\n", - corestr.c_signo, safe_strsignal (corestr.c_signo)); - } - if (filename[0] == '/') - corefile = savestring (filename, strlen (filename)); - else - { - corefile = concat (current_directory, "/", filename, NULL); - } - - flush_cached_frames (); - select_frame (get_current_frame (), 0); - - validate_files (); - } - else if (from_tty) - printf_unfiltered ("No core file now.\n"); -} - -i387_to_double (from, to) - char *from; - char *to; -{ - long *lp; - /* push extended mode on 387 stack, then pop in double mode - * - * first, set exception masks so no error is generated - - * number will be rounded to inf or 0, if necessary - */ - asm ("pushl %eax"); /* grab a stack slot */ - asm ("fstcw (%esp)"); /* get 387 control word */ - asm ("movl (%esp),%eax"); /* save old value */ - asm ("orl $0x3f,%eax"); /* mask all exceptions */ - asm ("pushl %eax"); - asm ("fldcw (%esp)"); /* load new value into 387 */ - - asm ("movl 8(%ebp),%eax"); - asm ("fldt (%eax)"); /* push extended number on 387 stack */ - asm ("fwait"); - asm ("movl 12(%ebp),%eax"); - asm ("fstpl (%eax)"); /* pop double */ - asm ("fwait"); - - asm ("popl %eax"); /* flush modified control word */ - asm ("fnclex"); /* clear exceptions */ - asm ("fldcw (%esp)"); /* restore original control word */ - asm ("popl %eax"); /* flush saved copy */ -} - -double_to_i387 (from, to) - char *from; - char *to; -{ - /* push double mode on 387 stack, then pop in extended mode - * no errors are possible because every 64-bit pattern - * can be converted to an extended - */ - asm ("movl 8(%ebp),%eax"); - asm ("fldl (%eax)"); - asm ("fwait"); - asm ("movl 12(%ebp),%eax"); - asm ("fstpt (%eax)"); - asm ("fwait"); -} - -void -fetch_inferior_registers (regno) - int regno; -{ - struct regs inferior_registers; - struct fp_state inferior_fp_registers; - extern char registers[]; - - registers_fetched (); - - ptrace (PTRACE_GETREGS, inferior_pid, - (PTRACE_ARG3_TYPE) &inferior_registers); - ptrace (PTRACE_GETFPREGS, inferior_pid, - (PTRACE_ARG3_TYPE) &inferior_fp_registers); - - memcpy (registers, &inferior_registers, sizeof inferior_registers); - - memcpy (®isters[REGISTER_BYTE (FP0_REGNUM)],inferior_fp_registers.f_st, - sizeof inferior_fp_registers.f_st); - memcpy (®isters[REGISTER_BYTE (FPC_REGNUM)], - &inferior_fp_registers.f_ctrl, - sizeof inferior_fp_registers - sizeof inferior_fp_registers.f_st); -} - -/* Store our register values back into the inferior. - If REGNO is -1, do this for all registers. - Otherwise, REGNO specifies which register (so we can save time). */ - -void -store_inferior_registers (regno) - int regno; -{ - struct regs inferior_registers; - struct fp_state inferior_fp_registers; - extern char registers[]; - - memcpy (&inferior_registers, registers, 20 * 4); - - memcpy (inferior_fp_registers.f_st, - ®isters[REGISTER_BYTE (FP0_REGNUM)], - sizeof inferior_fp_registers.f_st); - memcpy (&inferior_fp_registers.f_ctrl, - ®isters[REGISTER_BYTE (FPC_REGNUM)], - sizeof inferior_fp_registers - sizeof inferior_fp_registers.f_st); - -#ifdef PTRACE_FP_BUG - if (regno == FP_REGNUM || regno == -1) - /* Storing the frame pointer requires a gross hack, in which an - instruction that moves eax into ebp gets single-stepped. */ - { - int stack = inferior_registers.r_reg[SP_REGNUM]; - int stuff = ptrace (PTRACE_PEEKDATA, inferior_pid, - (PTRACE_ARG3_TYPE) stack); - int reg = inferior_registers.r_reg[EAX]; - inferior_registers.r_reg[EAX] = - inferior_registers.r_reg[FP_REGNUM]; - ptrace (PTRACE_SETREGS, inferior_pid, - (PTRACE_ARG3_TYPE) &inferior_registers); - ptrace (PTRACE_POKEDATA, inferior_pid, (PTRACE_ARG3_TYPE) stack, - 0xc589); - ptrace (PTRACE_SINGLESTEP, inferior_pid, (PTRACE_ARG3_TYPE) stack, - 0); - wait (0); - ptrace (PTRACE_POKEDATA, inferior_pid, (PTRACE_ARG3_TYPE) stack, - stuff); - inferior_registers.r_reg[EAX] = reg; - } -#endif - ptrace (PTRACE_SETREGS, inferior_pid, - (PTRACE_ARG3_TYPE) &inferior_registers); - ptrace (PTRACE_SETFPREGS, inferior_pid, - (PTRACE_ARG3_TYPE) &inferior_fp_registers); -} -- cgit v1.1