222 lines
6.3 KiB
C
222 lines
6.3 KiB
C
/* Functions specific to running gdb native on an ns32k running NetBSD
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Copyright 1989, 1992, 1993, 1994, 1996 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, Boston, MA 02111-1307, USA. */
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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 <machine/pcb.h>
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#include "defs.h"
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#include "inferior.h"
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#include "target.h"
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#include "gdbcore.h"
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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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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 fpreg 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(R0_REGNUM + 0, inferior_registers.r_r0);
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RF(R0_REGNUM + 1, inferior_registers.r_r1);
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RF(R0_REGNUM + 2, inferior_registers.r_r2);
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RF(R0_REGNUM + 3, inferior_registers.r_r3);
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RF(R0_REGNUM + 4, inferior_registers.r_r4);
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RF(R0_REGNUM + 5, inferior_registers.r_r5);
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RF(R0_REGNUM + 6, inferior_registers.r_r6);
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RF(R0_REGNUM + 7, inferior_registers.r_r7);
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RF(SP_REGNUM , inferior_registers.r_sp);
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RF(FP_REGNUM , inferior_registers.r_fp);
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RF(PC_REGNUM , inferior_registers.r_pc);
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RF(PS_REGNUM , inferior_registers.r_psr);
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RF(FPS_REGNUM , inferior_fpregisters.r_fsr);
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RF(FP0_REGNUM +0, inferior_fpregisters.r_freg[0]);
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RF(FP0_REGNUM +2, inferior_fpregisters.r_freg[2]);
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RF(FP0_REGNUM +4, inferior_fpregisters.r_freg[4]);
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RF(FP0_REGNUM +6, inferior_fpregisters.r_freg[6]);
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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 fpreg inferior_fpregisters;
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RS(R0_REGNUM + 0, inferior_registers.r_r0);
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RS(R0_REGNUM + 1, inferior_registers.r_r1);
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RS(R0_REGNUM + 2, inferior_registers.r_r2);
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RS(R0_REGNUM + 3, inferior_registers.r_r3);
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RS(R0_REGNUM + 4, inferior_registers.r_r4);
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RS(R0_REGNUM + 5, inferior_registers.r_r5);
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RS(R0_REGNUM + 6, inferior_registers.r_r6);
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RS(R0_REGNUM + 7, inferior_registers.r_r7);
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RS(SP_REGNUM , inferior_registers.r_sp);
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RS(FP_REGNUM , inferior_registers.r_fp);
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RS(PC_REGNUM , inferior_registers.r_pc);
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RS(PS_REGNUM , inferior_registers.r_psr);
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RS(FPS_REGNUM , inferior_fpregisters.r_fsr);
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RS(FP0_REGNUM +0, inferior_fpregisters.r_freg[0]);
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RS(FP0_REGNUM +2, inferior_fpregisters.r_freg[2]);
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RS(FP0_REGNUM +4, inferior_fpregisters.r_freg[4]);
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RS(FP0_REGNUM +6, inferior_fpregisters.r_freg[6]);
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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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/* XXX - Add this to machine/regs.h instead? */
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struct coreregs {
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struct reg intreg;
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struct fpreg freg;
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};
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/* Get registers from a core file. */
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static void
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fetch_core_registers (core_reg_sect, core_reg_size, which, reg_addr)
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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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unsigned int reg_addr; /* Unused in this version */
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{
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struct coreregs *core_reg;
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core_reg = (struct coreregs *)core_reg_sect;
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/*
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* We have *all* registers in the first core section.
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*/
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if (which != 0)
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return;
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if (core_reg_size < sizeof(*core_reg)) {
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fprintf_unfiltered (gdb_stderr, "Couldn't read regs from core file\n");
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return;
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}
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/* Integer registers */
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RF(R0_REGNUM + 0, core_reg->intreg.r_r0);
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RF(R0_REGNUM + 1, core_reg->intreg.r_r1);
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RF(R0_REGNUM + 2, core_reg->intreg.r_r2);
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RF(R0_REGNUM + 3, core_reg->intreg.r_r3);
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RF(R0_REGNUM + 4, core_reg->intreg.r_r4);
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RF(R0_REGNUM + 5, core_reg->intreg.r_r5);
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RF(R0_REGNUM + 6, core_reg->intreg.r_r6);
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RF(R0_REGNUM + 7, core_reg->intreg.r_r7);
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RF(SP_REGNUM , core_reg->intreg.r_sp);
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RF(FP_REGNUM , core_reg->intreg.r_fp);
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RF(PC_REGNUM , core_reg->intreg.r_pc);
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RF(PS_REGNUM , core_reg->intreg.r_psr);
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/* Floating point registers */
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RF(FPS_REGNUM , core_reg->freg.r_fsr);
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RF(FP0_REGNUM +0, core_reg->freg.r_freg[0]);
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RF(FP0_REGNUM +2, core_reg->freg.r_freg[2]);
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RF(FP0_REGNUM +4, core_reg->freg.r_freg[4]);
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RF(FP0_REGNUM +6, core_reg->freg.r_freg[6]);
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registers_fetched ();
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}
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/* Register that we are able to handle ns32knbsd core file formats.
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FIXME: is this really bfd_target_unknown_flavour? */
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static struct core_fns nat_core_fns =
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{
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bfd_target_unknown_flavour,
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fetch_core_registers,
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NULL
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};
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void
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_initialize_ns32knbsd_nat ()
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{
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add_core_fns (&nat_core_fns);
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}
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/*
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* kernel_u_size() is not helpful on NetBSD because
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* the "u" struct is NOT in the core dump file.
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*/
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#ifdef FETCH_KCORE_REGISTERS
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/*
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* Get registers from a kernel crash dump or live kernel.
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* Called by kcore-nbsd.c:get_kcore_registers().
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*/
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void
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fetch_kcore_registers (pcb)
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struct pcb *pcb;
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{
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struct switchframe sf;
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struct reg intreg;
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int dummy;
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/* Integer registers */
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if (target_read_memory(pcb->pcb_ksp, &sf, sizeof sf))
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error("Cannot read integer registers.");
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/* We use the psr at kernel entry */
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if (target_read_memory(pcb->pcb_onstack, &intreg, sizeof intreg))
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error("Cannot read processor status register.");
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dummy = 0;
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RF(R0_REGNUM + 0, dummy);
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RF(R0_REGNUM + 1, dummy);
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RF(R0_REGNUM + 2, dummy);
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RF(R0_REGNUM + 3, sf.sf_r3);
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RF(R0_REGNUM + 4, sf.sf_r4);
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RF(R0_REGNUM + 5, sf.sf_r5);
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RF(R0_REGNUM + 6, sf.sf_r6);
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RF(R0_REGNUM + 7, sf.sf_r7);
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dummy = pcb->pcb_kfp + 8;
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RF(SP_REGNUM , dummy);
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RF(FP_REGNUM , sf.sf_fp);
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RF(PC_REGNUM , sf.sf_pc);
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RF(PS_REGNUM , intreg.r_psr);
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/* The kernel does not use the FPU, so ignore it. */
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registers_fetched ();
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}
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#endif /* FETCH_KCORE_REGISTERS */
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