X-Git-Url: http://drtracing.org/?a=blobdiff_plain;f=gdb%2Fsun386-nat.c;h=b0909f5151c484fff037263fd636db71e8f60576;hb=b1af961c8433821f61dd1849cff9eb9a8bb974e8;hp=b62b6fd8f85d8e2dc9f7c5f4b2185f02366dba43;hpb=7a292a7adf506b866905b06b3024c0fd411c4583;p=deliverable%2Fbinutils-gdb.git diff --git a/gdb/sun386-nat.c b/gdb/sun386-nat.c index b62b6fd8f8..b0909f5151 100644 --- a/gdb/sun386-nat.c +++ b/gdb/sun386-nat.c @@ -1,255 +1,250 @@ -/* 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; - - /* 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; - - 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; - - 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); -} +/* 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 */ +/* OBSOLETE #include */ +/* OBSOLETE #include */ +/* OBSOLETE #include */ +/* OBSOLETE #include */ +/* OBSOLETE #include */ +/* OBSOLETE */ +/* OBSOLETE #include */ +/* OBSOLETE #include */ +/* OBSOLETE */ +/* OBSOLETE #include */ +/* OBSOLETE #include "gdb_stat.h" */ +/* OBSOLETE #include */ +/* 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 } */