219 lines
6.8 KiB
C
219 lines
6.8 KiB
C
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/* Native-dependent code for NetBSD/i386, for GDB.
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Copyright 1988, 1989, 1991, 1992, 1994, 1996, 2000
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Free Software Foundation, Inc.
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This file is part of GDB.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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#include "defs.h"
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#include <sys/types.h>
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#include <sys/ptrace.h>
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#include <machine/reg.h>
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#include <machine/frame.h>
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#include "inferior.h"
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#include "gdbcore.h" /* for registers_fetched() */
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#define RF(dst, src) \
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memcpy(®isters[REGISTER_BYTE(dst)], &src, sizeof(src))
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#define RS(src, dst) \
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memcpy(&dst, ®isters[REGISTER_BYTE(src)], sizeof(dst))
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struct env387
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{
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unsigned short control;
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unsigned short r0;
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unsigned short status;
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unsigned short r1;
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unsigned short tag;
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unsigned short r2;
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unsigned long eip;
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unsigned short code_seg;
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unsigned short opcode;
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unsigned long operand;
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unsigned short operand_seg;
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unsigned short r3;
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unsigned char regs[8][10];
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};
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void
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fetch_inferior_registers (regno)
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int regno;
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{
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struct reg inferior_registers;
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struct env387 inferior_fpregisters;
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ptrace (PT_GETREGS, inferior_pid,
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(PTRACE_ARG3_TYPE) &inferior_registers, 0);
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ptrace (PT_GETFPREGS, inferior_pid,
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(PTRACE_ARG3_TYPE) &inferior_fpregisters, 0);
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RF ( 0, inferior_registers.r_eax);
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RF ( 1, inferior_registers.r_ecx);
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RF ( 2, inferior_registers.r_edx);
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RF ( 3, inferior_registers.r_ebx);
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RF ( 4, inferior_registers.r_esp);
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RF ( 5, inferior_registers.r_ebp);
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RF ( 6, inferior_registers.r_esi);
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RF ( 7, inferior_registers.r_edi);
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RF ( 8, inferior_registers.r_eip);
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RF ( 9, inferior_registers.r_eflags);
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RF (10, inferior_registers.r_cs);
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RF (11, inferior_registers.r_ss);
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RF (12, inferior_registers.r_ds);
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RF (13, inferior_registers.r_es);
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RF (14, inferior_registers.r_fs);
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RF (15, inferior_registers.r_gs);
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RF (FP0_REGNUM, inferior_fpregisters.regs[0]);
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RF (FP0_REGNUM + 1, inferior_fpregisters.regs[1]);
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RF (FP0_REGNUM + 2, inferior_fpregisters.regs[2]);
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RF (FP0_REGNUM + 3, inferior_fpregisters.regs[3]);
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RF (FP0_REGNUM + 4, inferior_fpregisters.regs[4]);
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RF (FP0_REGNUM + 5, inferior_fpregisters.regs[5]);
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RF (FP0_REGNUM + 6, inferior_fpregisters.regs[6]);
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RF (FP0_REGNUM + 7, inferior_fpregisters.regs[7]);
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RF (FCTRL_REGNUM, inferior_fpregisters.control);
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RF (FSTAT_REGNUM, inferior_fpregisters.status);
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RF (FTAG_REGNUM, inferior_fpregisters.tag);
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RF (FCS_REGNUM, inferior_fpregisters.code_seg);
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RF (FCOFF_REGNUM, inferior_fpregisters.eip);
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RF (FDS_REGNUM, inferior_fpregisters.operand_seg);
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RF (FDOFF_REGNUM, inferior_fpregisters.operand);
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RF (FOP_REGNUM, inferior_fpregisters.opcode);
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registers_fetched ();
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}
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void
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store_inferior_registers (regno)
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int regno;
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{
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struct reg inferior_registers;
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struct env387 inferior_fpregisters;
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RS ( 0, inferior_registers.r_eax);
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RS ( 1, inferior_registers.r_ecx);
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RS ( 2, inferior_registers.r_edx);
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RS ( 3, inferior_registers.r_ebx);
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RS ( 4, inferior_registers.r_esp);
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RS ( 5, inferior_registers.r_ebp);
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RS ( 6, inferior_registers.r_esi);
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RS ( 7, inferior_registers.r_edi);
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RS ( 8, inferior_registers.r_eip);
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RS ( 9, inferior_registers.r_eflags);
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RS (10, inferior_registers.r_cs);
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RS (11, inferior_registers.r_ss);
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RS (12, inferior_registers.r_ds);
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RS (13, inferior_registers.r_es);
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RS (14, inferior_registers.r_fs);
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RS (15, inferior_registers.r_gs);
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RS (FP0_REGNUM, inferior_fpregisters.regs[0]);
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RS (FP0_REGNUM + 1, inferior_fpregisters.regs[1]);
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RS (FP0_REGNUM + 2, inferior_fpregisters.regs[2]);
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RS (FP0_REGNUM + 3, inferior_fpregisters.regs[3]);
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RS (FP0_REGNUM + 4, inferior_fpregisters.regs[4]);
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RS (FP0_REGNUM + 5, inferior_fpregisters.regs[5]);
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RS (FP0_REGNUM + 6, inferior_fpregisters.regs[6]);
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RS (FP0_REGNUM + 7, inferior_fpregisters.regs[7]);
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RS (FCTRL_REGNUM, inferior_fpregisters.control);
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RS (FSTAT_REGNUM, inferior_fpregisters.status);
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RS (FTAG_REGNUM, inferior_fpregisters.tag);
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RS (FCS_REGNUM, inferior_fpregisters.code_seg);
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RS (FCOFF_REGNUM, inferior_fpregisters.eip);
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RS (FDS_REGNUM, inferior_fpregisters.operand_seg);
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RS (FDOFF_REGNUM, inferior_fpregisters.operand);
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RS (FOP_REGNUM, inferior_fpregisters.opcode);
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ptrace (PT_SETREGS, inferior_pid,
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(PTRACE_ARG3_TYPE) &inferior_registers, 0);
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ptrace (PT_SETFPREGS, inferior_pid,
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(PTRACE_ARG3_TYPE) &inferior_fpregisters, 0);
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}
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int
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i386nbsd_use_struct_convention (int gcc_p, struct type *type)
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{
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return !(TYPE_LENGTH (type) == 1
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|| TYPE_LENGTH (type) == 2
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|| TYPE_LENGTH (type) == 4
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|| TYPE_LENGTH (type) == 8);
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}
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struct md_core
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{
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struct reg intreg;
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struct env387 freg;
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};
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static void
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fetch_core_registers (core_reg_sect, core_reg_size, which, ignore)
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char *core_reg_sect;
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unsigned core_reg_size;
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int which;
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CORE_ADDR ignore;
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{
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struct md_core *core_reg = (struct md_core *) core_reg_sect;
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/* integer registers */
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memcpy (®isters[REGISTER_BYTE (0)], &core_reg->intreg,
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sizeof (struct reg));
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/* floating point registers */
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RF (FP0_REGNUM, core_reg->freg.regs[0]);
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RF (FP0_REGNUM + 1, core_reg->freg.regs[1]);
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RF (FP0_REGNUM + 2, core_reg->freg.regs[2]);
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RF (FP0_REGNUM + 3, core_reg->freg.regs[3]);
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RF (FP0_REGNUM + 4, core_reg->freg.regs[4]);
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RF (FP0_REGNUM + 5, core_reg->freg.regs[5]);
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RF (FP0_REGNUM + 6, core_reg->freg.regs[6]);
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RF (FP0_REGNUM + 7, core_reg->freg.regs[7]);
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RF (FCTRL_REGNUM, core_reg->freg.control);
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RF (FSTAT_REGNUM, core_reg->freg.status);
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RF (FTAG_REGNUM, core_reg->freg.tag);
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RF (FCS_REGNUM, core_reg->freg.code_seg);
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RF (FCOFF_REGNUM, core_reg->freg.eip);
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RF (FDS_REGNUM, core_reg->freg.operand_seg);
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RF (FDOFF_REGNUM, core_reg->freg.operand);
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RF (FOP_REGNUM, core_reg->freg.opcode);
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registers_fetched ();
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}
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/* Register that we are able to handle i386nbsd core file formats.
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FIXME: is this really bfd_target_unknown_flavour? */
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static struct core_fns i386nbsd_core_fns =
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{
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bfd_target_unknown_flavour, /* core_flavour */
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default_check_format, /* check_format */
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default_core_sniffer, /* core_sniffer */
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fetch_core_registers, /* core_read_registers */
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NULL /* next */
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};
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void
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_initialize_i386nbsd_nat ()
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{
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add_core_fns (&i386nbsd_core_fns);
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}
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