mirror of
https://github.com/darlinghq/darling-gdb.git
synced 2024-11-25 13:09:48 +00:00
214 lines
6.8 KiB
C
214 lines
6.8 KiB
C
/* Native-dependent code for NetBSD/i386, for GDB.
|
||
Copyright 1988, 1989, 1991, 1992, 1994, 1996, 2000
|
||
Free Software Foundation, Inc.
|
||
|
||
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 <sys/types.h>
|
||
#include <sys/ptrace.h>
|
||
#include <machine/reg.h>
|
||
#include <machine/frame.h>
|
||
#include "inferior.h"
|
||
#include "gdbcore.h" /* for registers_fetched() */
|
||
|
||
#define RF(dst, src) \
|
||
memcpy(®isters[REGISTER_BYTE(dst)], &src, sizeof(src))
|
||
|
||
#define RS(src, dst) \
|
||
memcpy(&dst, ®isters[REGISTER_BYTE(src)], sizeof(dst))
|
||
|
||
struct env387
|
||
{
|
||
unsigned short control;
|
||
unsigned short r0;
|
||
unsigned short status;
|
||
unsigned short r1;
|
||
unsigned short tag;
|
||
unsigned short r2;
|
||
unsigned long eip;
|
||
unsigned short code_seg;
|
||
unsigned short opcode;
|
||
unsigned long operand;
|
||
unsigned short operand_seg;
|
||
unsigned short r3;
|
||
unsigned char regs[8][10];
|
||
};
|
||
|
||
void
|
||
fetch_inferior_registers (int regno)
|
||
{
|
||
struct reg inferior_registers;
|
||
struct env387 inferior_fpregisters;
|
||
|
||
ptrace (PT_GETREGS, inferior_pid,
|
||
(PTRACE_ARG3_TYPE) &inferior_registers, 0);
|
||
ptrace (PT_GETFPREGS, inferior_pid,
|
||
(PTRACE_ARG3_TYPE) &inferior_fpregisters, 0);
|
||
|
||
RF ( 0, inferior_registers.r_eax);
|
||
RF ( 1, inferior_registers.r_ecx);
|
||
RF ( 2, inferior_registers.r_edx);
|
||
RF ( 3, inferior_registers.r_ebx);
|
||
RF ( 4, inferior_registers.r_esp);
|
||
RF ( 5, inferior_registers.r_ebp);
|
||
RF ( 6, inferior_registers.r_esi);
|
||
RF ( 7, inferior_registers.r_edi);
|
||
RF ( 8, inferior_registers.r_eip);
|
||
RF ( 9, inferior_registers.r_eflags);
|
||
RF (10, inferior_registers.r_cs);
|
||
RF (11, inferior_registers.r_ss);
|
||
RF (12, inferior_registers.r_ds);
|
||
RF (13, inferior_registers.r_es);
|
||
RF (14, inferior_registers.r_fs);
|
||
RF (15, inferior_registers.r_gs);
|
||
|
||
RF (FP0_REGNUM, inferior_fpregisters.regs[0]);
|
||
RF (FP0_REGNUM + 1, inferior_fpregisters.regs[1]);
|
||
RF (FP0_REGNUM + 2, inferior_fpregisters.regs[2]);
|
||
RF (FP0_REGNUM + 3, inferior_fpregisters.regs[3]);
|
||
RF (FP0_REGNUM + 4, inferior_fpregisters.regs[4]);
|
||
RF (FP0_REGNUM + 5, inferior_fpregisters.regs[5]);
|
||
RF (FP0_REGNUM + 6, inferior_fpregisters.regs[6]);
|
||
RF (FP0_REGNUM + 7, inferior_fpregisters.regs[7]);
|
||
|
||
RF (FCTRL_REGNUM, inferior_fpregisters.control);
|
||
RF (FSTAT_REGNUM, inferior_fpregisters.status);
|
||
RF (FTAG_REGNUM, inferior_fpregisters.tag);
|
||
RF (FCS_REGNUM, inferior_fpregisters.code_seg);
|
||
RF (FCOFF_REGNUM, inferior_fpregisters.eip);
|
||
RF (FDS_REGNUM, inferior_fpregisters.operand_seg);
|
||
RF (FDOFF_REGNUM, inferior_fpregisters.operand);
|
||
RF (FOP_REGNUM, inferior_fpregisters.opcode);
|
||
|
||
registers_fetched ();
|
||
}
|
||
|
||
void
|
||
store_inferior_registers (int regno)
|
||
{
|
||
struct reg inferior_registers;
|
||
struct env387 inferior_fpregisters;
|
||
|
||
RS ( 0, inferior_registers.r_eax);
|
||
RS ( 1, inferior_registers.r_ecx);
|
||
RS ( 2, inferior_registers.r_edx);
|
||
RS ( 3, inferior_registers.r_ebx);
|
||
RS ( 4, inferior_registers.r_esp);
|
||
RS ( 5, inferior_registers.r_ebp);
|
||
RS ( 6, inferior_registers.r_esi);
|
||
RS ( 7, inferior_registers.r_edi);
|
||
RS ( 8, inferior_registers.r_eip);
|
||
RS ( 9, inferior_registers.r_eflags);
|
||
RS (10, inferior_registers.r_cs);
|
||
RS (11, inferior_registers.r_ss);
|
||
RS (12, inferior_registers.r_ds);
|
||
RS (13, inferior_registers.r_es);
|
||
RS (14, inferior_registers.r_fs);
|
||
RS (15, inferior_registers.r_gs);
|
||
|
||
|
||
RS (FP0_REGNUM, inferior_fpregisters.regs[0]);
|
||
RS (FP0_REGNUM + 1, inferior_fpregisters.regs[1]);
|
||
RS (FP0_REGNUM + 2, inferior_fpregisters.regs[2]);
|
||
RS (FP0_REGNUM + 3, inferior_fpregisters.regs[3]);
|
||
RS (FP0_REGNUM + 4, inferior_fpregisters.regs[4]);
|
||
RS (FP0_REGNUM + 5, inferior_fpregisters.regs[5]);
|
||
RS (FP0_REGNUM + 6, inferior_fpregisters.regs[6]);
|
||
RS (FP0_REGNUM + 7, inferior_fpregisters.regs[7]);
|
||
|
||
RS (FCTRL_REGNUM, inferior_fpregisters.control);
|
||
RS (FSTAT_REGNUM, inferior_fpregisters.status);
|
||
RS (FTAG_REGNUM, inferior_fpregisters.tag);
|
||
RS (FCS_REGNUM, inferior_fpregisters.code_seg);
|
||
RS (FCOFF_REGNUM, inferior_fpregisters.eip);
|
||
RS (FDS_REGNUM, inferior_fpregisters.operand_seg);
|
||
RS (FDOFF_REGNUM, inferior_fpregisters.operand);
|
||
RS (FOP_REGNUM, inferior_fpregisters.opcode);
|
||
|
||
ptrace (PT_SETREGS, inferior_pid,
|
||
(PTRACE_ARG3_TYPE) &inferior_registers, 0);
|
||
ptrace (PT_SETFPREGS, inferior_pid,
|
||
(PTRACE_ARG3_TYPE) &inferior_fpregisters, 0);
|
||
}
|
||
|
||
int
|
||
i386nbsd_use_struct_convention (int gcc_p, struct type *type)
|
||
{
|
||
return !(TYPE_LENGTH (type) == 1
|
||
|| TYPE_LENGTH (type) == 2
|
||
|| TYPE_LENGTH (type) == 4
|
||
|| TYPE_LENGTH (type) == 8);
|
||
}
|
||
|
||
struct md_core
|
||
{
|
||
struct reg intreg;
|
||
struct env387 freg;
|
||
};
|
||
|
||
static void
|
||
fetch_core_registers (char *core_reg_sect, unsigned core_reg_size, int which,
|
||
CORE_ADDR ignore)
|
||
{
|
||
struct md_core *core_reg = (struct md_core *) core_reg_sect;
|
||
|
||
/* integer registers */
|
||
memcpy (®isters[REGISTER_BYTE (0)], &core_reg->intreg,
|
||
sizeof (struct reg));
|
||
|
||
/* floating point registers */
|
||
RF (FP0_REGNUM, core_reg->freg.regs[0]);
|
||
RF (FP0_REGNUM + 1, core_reg->freg.regs[1]);
|
||
RF (FP0_REGNUM + 2, core_reg->freg.regs[2]);
|
||
RF (FP0_REGNUM + 3, core_reg->freg.regs[3]);
|
||
RF (FP0_REGNUM + 4, core_reg->freg.regs[4]);
|
||
RF (FP0_REGNUM + 5, core_reg->freg.regs[5]);
|
||
RF (FP0_REGNUM + 6, core_reg->freg.regs[6]);
|
||
RF (FP0_REGNUM + 7, core_reg->freg.regs[7]);
|
||
|
||
RF (FCTRL_REGNUM, core_reg->freg.control);
|
||
RF (FSTAT_REGNUM, core_reg->freg.status);
|
||
RF (FTAG_REGNUM, core_reg->freg.tag);
|
||
RF (FCS_REGNUM, core_reg->freg.code_seg);
|
||
RF (FCOFF_REGNUM, core_reg->freg.eip);
|
||
RF (FDS_REGNUM, core_reg->freg.operand_seg);
|
||
RF (FDOFF_REGNUM, core_reg->freg.operand);
|
||
RF (FOP_REGNUM, core_reg->freg.opcode);
|
||
|
||
registers_fetched ();
|
||
}
|
||
|
||
/* Register that we are able to handle i386nbsd core file formats.
|
||
FIXME: is this really bfd_target_unknown_flavour? */
|
||
|
||
static struct core_fns i386nbsd_core_fns =
|
||
{
|
||
bfd_target_unknown_flavour, /* core_flavour */
|
||
default_check_format, /* check_format */
|
||
default_core_sniffer, /* core_sniffer */
|
||
fetch_core_registers, /* core_read_registers */
|
||
NULL /* next */
|
||
};
|
||
|
||
void
|
||
_initialize_i386nbsd_nat (void)
|
||
{
|
||
add_core_fns (&i386nbsd_core_fns);
|
||
}
|