binutils-gdb/gdb/ppcobsd-nat.c

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/* Native-dependent code for OpenBSD/powerpc.
Copyright 2004, 2005 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 "gdbcore.h"
#include "inferior.h"
#include "regcache.h"
#include <stddef.h>
#include <sys/types.h>
#include <sys/ptrace.h>
#include <sys/signal.h>
#include <machine/frame.h>
#include <machine/pcb.h>
#include <machine/reg.h>
#include "ppc-tdep.h"
#include "ppcobsd-tdep.h"
#include "inf-ptrace.h"
#include "bsd-kvm.h"
/* OpenBSD/powerpc doesn't have PT_GETFPREGS/PT_SETFPREGS like
NetBSD/powerpc and FreeBSD/powerpc. */
/* Fetch register REGNUM from the inferior. If REGNUM is -1, do this
for all registers. */
static void
ppcobsd_fetch_registers (int regnum)
{
struct reg regs;
if (ptrace (PT_GETREGS, PIDGET (inferior_ptid),
* alphabsd-nat.c (fetch_inferior_registers): (store_inferior_registers): Replace PTRACE_ARG3_TYPE with PTRACE_TYPE_ARG3. * amd64bsd-nat.c (fetch_inferior_registers) (store_inferior_registers): Replace PTRACE_ARG3_TYPE with PTRACE_TYPE_ARG3. * armnbsd-nat.c: Update copyright year. (fetch_register, fetch_regs, fetch_fp_register, fetch_fp_regs) (store_register, store_regs, store_fp_register, store_fp_regs): Replace PTRACE_ARG3_TYPE with PTRACE_TYPE_ARG3. * hppabsd-nat.c (fetch_inferior_registers) (store_inferior_registers): Replace PTRACE_ARG3_TYPE with PTRACE_TYPE_ARG3. * i386bsd-nat.c (fetch_inferior_registers) (store_inferior_registers, i386bsd_dr_set, i386bsd_dr_get_status): Replace PTRACE_ARG3_TYPE with PTRACE_TYPE_ARG3. * m68kbsd-nat.c (fetch_inferior_registers) (store_inferior_registers): Replace PTRACE_ARG3_TYPE with PTRACE_TYPE_ARG3. * m88kbsd-nat.c (fetch_inferior_registers) (store_inferior_registers): Replace PTRACE_ARG3_TYPE with PTRACE_TYPE_ARG3. * mipsnbsd-nat.c: Update copyright year. (fetch_inferior_registers, store_inferior_registers): Replace PTRACE_ARG3_TYPE with PTRACE_TYPE_ARG3. * ns32knbsd-nat.c: Update copyright year. (fetch_inferior_registers, store_inferior_registers): Replace PTRACE_ARG3_TYPE with PTRACE_TYPE_ARG3. * ppcnbsd-nat.c (fetch_inferior_registers): (store_inferior_registers): Replace PTRACE_ARG3_TYPE with PTRACE_TYPE_ARG3. * ppcobsd-nat.c (fetch_inferior_registers): (store_inferior_registers): Replace PTRACE_ARG3_TYPE with PTRACE_TYPE_ARG3. * shnbsd-nat.c: Update copyright year. (fetch_inferior_registers, store_inferior_registers): Replace PTRACE_ARG3_TYPE with PTRACE_TYPE_ARG3. * vaxbsd-nat.c (fetch_inferior_registers) (store_inferior_registers): Replace PTRACE_ARG3_TYPE with PTRACE_TYPE_ARG3.
2004-08-15 01:37:04 +02:00
(PTRACE_TYPE_ARG3) &regs, 0) == -1)
2005-02-11 Andrew Cagney <cagney@gnu.org> Mark up error_no_arg, query, perror_with_name, complaint, and internal_error. * breakpoint.c, cp-abi.c, cp-namespace.c, cp-support.c: Update. * cris-tdep.c, dbxread.c, dictionary.c, dsrec.c: Update. * dummy-frame.c, dve3900-rom.c, dwarf2-frame.c, dwarf2expr.c: Update. * dwarf2read.c, dwarfread.c, elfread.c, event-loop.c: Update. * exceptions.c, exec.c, f-lang.c, findvar.c, fork-child.c: Update. * frame-unwind.c, frame.c, frv-linux-tdep.c, frv-tdep.c: Update. * gdb_assert.h, gdbarch.c, gdbtypes.c, gnu-nat.c: Update. * go32-nat.c, hppa-tdep.c, hppabsd-nat.c, hpread.c: Update. * i386-linux-nat.c, i386-nat.c, i386-tdep.c, i386bsd-nat.c: Update. * i386fbsd-nat.c, inf-ptrace.c, inf-ttrace.c, infcall.c: Update. * infcmd.c, inflow.c, infptrace.c, infrun.c, inftarg.c: Update. * interps.c, language.c, linespec.c, linux-nat.c: Update. * m32r-linux-nat.c, m68k-tdep.c, m68kbsd-nat.c: Update. * m68klinux-nat.c, m88kbsd-nat.c, macroexp.c, macroscope.c: Update. * macrotab.c, maint.c, mdebugread.c, memattr.c: Update. * mips-linux-tdep.c, mips-tdep.c, mips64obsd-nat.c: Update. * mipsnbsd-nat.c, mn10300-tdep.c, monitor.c, nto-procfs.c: Update. * objc-lang.c, objfiles.c, objfiles.h, ocd.c, osabi.c: Update. * parse.c, ppc-bdm.c, ppc-linux-nat.c, ppc-sysv-tdep.c: Update. * ppcnbsd-nat.c, ppcobsd-nat.c, printcmd.c, procfs.c: Update. * regcache.c, reggroups.c, remote-e7000.c, remote-mips.c: Update. * remote-rdp.c, remote-sds.c, remote-sim.c, remote-st.c: Update. * remote-utils.c, remote.c, rs6000-nat.c, rs6000-tdep.c: Update. * s390-nat.c, s390-tdep.c, sentinel-frame.c, serial.c: Update. * sh-tdep.c, sh3-rom.c, sh64-tdep.c, shnbsd-nat.c: Update. * solib-aix5.c, solib-svr4.c, solib.c, source.c: Update. * sparc-nat.c, stabsread.c, stack.c, symfile.c, symtab.c: Update. * symtab.h, target.c, tracepoint.c, ui-file.c, ui-out.c: Update. * utils.c, valops.c, valprint.c, vax-nat.c, vaxbsd-nat.c: Update. * win32-nat.c, xcoffread.c, xstormy16-tdep.c: Update. * cli/cli-cmds.c, cli/cli-logging.c, cli/cli-script.c: Update. * cli/cli-setshow.c, mi/mi-cmd-break.c, mi/mi-cmds.c: Update. * mi/mi-console.c, mi/mi-getopt.c, mi/mi-out.c: Update. * tui/tui-file.c, tui/tui-interp.c: Update.
2005-02-11 19:13:55 +01:00
perror_with_name (_("Couldn't get registers"));
ppcobsd_supply_gregset (&ppcobsd_gregset, current_regcache, -1,
&regs, sizeof regs);
}
/* Store register REGNUM back into the inferior. If REGNUM is -1, do
this for all registers. */
static void
ppcobsd_store_registers (int regnum)
{
struct reg regs;
if (ptrace (PT_GETREGS, PIDGET (inferior_ptid),
* alphabsd-nat.c (fetch_inferior_registers): (store_inferior_registers): Replace PTRACE_ARG3_TYPE with PTRACE_TYPE_ARG3. * amd64bsd-nat.c (fetch_inferior_registers) (store_inferior_registers): Replace PTRACE_ARG3_TYPE with PTRACE_TYPE_ARG3. * armnbsd-nat.c: Update copyright year. (fetch_register, fetch_regs, fetch_fp_register, fetch_fp_regs) (store_register, store_regs, store_fp_register, store_fp_regs): Replace PTRACE_ARG3_TYPE with PTRACE_TYPE_ARG3. * hppabsd-nat.c (fetch_inferior_registers) (store_inferior_registers): Replace PTRACE_ARG3_TYPE with PTRACE_TYPE_ARG3. * i386bsd-nat.c (fetch_inferior_registers) (store_inferior_registers, i386bsd_dr_set, i386bsd_dr_get_status): Replace PTRACE_ARG3_TYPE with PTRACE_TYPE_ARG3. * m68kbsd-nat.c (fetch_inferior_registers) (store_inferior_registers): Replace PTRACE_ARG3_TYPE with PTRACE_TYPE_ARG3. * m88kbsd-nat.c (fetch_inferior_registers) (store_inferior_registers): Replace PTRACE_ARG3_TYPE with PTRACE_TYPE_ARG3. * mipsnbsd-nat.c: Update copyright year. (fetch_inferior_registers, store_inferior_registers): Replace PTRACE_ARG3_TYPE with PTRACE_TYPE_ARG3. * ns32knbsd-nat.c: Update copyright year. (fetch_inferior_registers, store_inferior_registers): Replace PTRACE_ARG3_TYPE with PTRACE_TYPE_ARG3. * ppcnbsd-nat.c (fetch_inferior_registers): (store_inferior_registers): Replace PTRACE_ARG3_TYPE with PTRACE_TYPE_ARG3. * ppcobsd-nat.c (fetch_inferior_registers): (store_inferior_registers): Replace PTRACE_ARG3_TYPE with PTRACE_TYPE_ARG3. * shnbsd-nat.c: Update copyright year. (fetch_inferior_registers, store_inferior_registers): Replace PTRACE_ARG3_TYPE with PTRACE_TYPE_ARG3. * vaxbsd-nat.c (fetch_inferior_registers) (store_inferior_registers): Replace PTRACE_ARG3_TYPE with PTRACE_TYPE_ARG3.
2004-08-15 01:37:04 +02:00
(PTRACE_TYPE_ARG3) &regs, 0) == -1)
2005-02-11 Andrew Cagney <cagney@gnu.org> Mark up error_no_arg, query, perror_with_name, complaint, and internal_error. * breakpoint.c, cp-abi.c, cp-namespace.c, cp-support.c: Update. * cris-tdep.c, dbxread.c, dictionary.c, dsrec.c: Update. * dummy-frame.c, dve3900-rom.c, dwarf2-frame.c, dwarf2expr.c: Update. * dwarf2read.c, dwarfread.c, elfread.c, event-loop.c: Update. * exceptions.c, exec.c, f-lang.c, findvar.c, fork-child.c: Update. * frame-unwind.c, frame.c, frv-linux-tdep.c, frv-tdep.c: Update. * gdb_assert.h, gdbarch.c, gdbtypes.c, gnu-nat.c: Update. * go32-nat.c, hppa-tdep.c, hppabsd-nat.c, hpread.c: Update. * i386-linux-nat.c, i386-nat.c, i386-tdep.c, i386bsd-nat.c: Update. * i386fbsd-nat.c, inf-ptrace.c, inf-ttrace.c, infcall.c: Update. * infcmd.c, inflow.c, infptrace.c, infrun.c, inftarg.c: Update. * interps.c, language.c, linespec.c, linux-nat.c: Update. * m32r-linux-nat.c, m68k-tdep.c, m68kbsd-nat.c: Update. * m68klinux-nat.c, m88kbsd-nat.c, macroexp.c, macroscope.c: Update. * macrotab.c, maint.c, mdebugread.c, memattr.c: Update. * mips-linux-tdep.c, mips-tdep.c, mips64obsd-nat.c: Update. * mipsnbsd-nat.c, mn10300-tdep.c, monitor.c, nto-procfs.c: Update. * objc-lang.c, objfiles.c, objfiles.h, ocd.c, osabi.c: Update. * parse.c, ppc-bdm.c, ppc-linux-nat.c, ppc-sysv-tdep.c: Update. * ppcnbsd-nat.c, ppcobsd-nat.c, printcmd.c, procfs.c: Update. * regcache.c, reggroups.c, remote-e7000.c, remote-mips.c: Update. * remote-rdp.c, remote-sds.c, remote-sim.c, remote-st.c: Update. * remote-utils.c, remote.c, rs6000-nat.c, rs6000-tdep.c: Update. * s390-nat.c, s390-tdep.c, sentinel-frame.c, serial.c: Update. * sh-tdep.c, sh3-rom.c, sh64-tdep.c, shnbsd-nat.c: Update. * solib-aix5.c, solib-svr4.c, solib.c, source.c: Update. * sparc-nat.c, stabsread.c, stack.c, symfile.c, symtab.c: Update. * symtab.h, target.c, tracepoint.c, ui-file.c, ui-out.c: Update. * utils.c, valops.c, valprint.c, vax-nat.c, vaxbsd-nat.c: Update. * win32-nat.c, xcoffread.c, xstormy16-tdep.c: Update. * cli/cli-cmds.c, cli/cli-logging.c, cli/cli-script.c: Update. * cli/cli-setshow.c, mi/mi-cmd-break.c, mi/mi-cmds.c: Update. * mi/mi-console.c, mi/mi-getopt.c, mi/mi-out.c: Update. * tui/tui-file.c, tui/tui-interp.c: Update.
2005-02-11 19:13:55 +01:00
perror_with_name (_("Couldn't get registers"));
ppcobsd_collect_gregset (&ppcobsd_gregset, current_regcache,
regnum, &regs, sizeof regs);
if (ptrace (PT_SETREGS, PIDGET (inferior_ptid),
* alphabsd-nat.c (fetch_inferior_registers): (store_inferior_registers): Replace PTRACE_ARG3_TYPE with PTRACE_TYPE_ARG3. * amd64bsd-nat.c (fetch_inferior_registers) (store_inferior_registers): Replace PTRACE_ARG3_TYPE with PTRACE_TYPE_ARG3. * armnbsd-nat.c: Update copyright year. (fetch_register, fetch_regs, fetch_fp_register, fetch_fp_regs) (store_register, store_regs, store_fp_register, store_fp_regs): Replace PTRACE_ARG3_TYPE with PTRACE_TYPE_ARG3. * hppabsd-nat.c (fetch_inferior_registers) (store_inferior_registers): Replace PTRACE_ARG3_TYPE with PTRACE_TYPE_ARG3. * i386bsd-nat.c (fetch_inferior_registers) (store_inferior_registers, i386bsd_dr_set, i386bsd_dr_get_status): Replace PTRACE_ARG3_TYPE with PTRACE_TYPE_ARG3. * m68kbsd-nat.c (fetch_inferior_registers) (store_inferior_registers): Replace PTRACE_ARG3_TYPE with PTRACE_TYPE_ARG3. * m88kbsd-nat.c (fetch_inferior_registers) (store_inferior_registers): Replace PTRACE_ARG3_TYPE with PTRACE_TYPE_ARG3. * mipsnbsd-nat.c: Update copyright year. (fetch_inferior_registers, store_inferior_registers): Replace PTRACE_ARG3_TYPE with PTRACE_TYPE_ARG3. * ns32knbsd-nat.c: Update copyright year. (fetch_inferior_registers, store_inferior_registers): Replace PTRACE_ARG3_TYPE with PTRACE_TYPE_ARG3. * ppcnbsd-nat.c (fetch_inferior_registers): (store_inferior_registers): Replace PTRACE_ARG3_TYPE with PTRACE_TYPE_ARG3. * ppcobsd-nat.c (fetch_inferior_registers): (store_inferior_registers): Replace PTRACE_ARG3_TYPE with PTRACE_TYPE_ARG3. * shnbsd-nat.c: Update copyright year. (fetch_inferior_registers, store_inferior_registers): Replace PTRACE_ARG3_TYPE with PTRACE_TYPE_ARG3. * vaxbsd-nat.c (fetch_inferior_registers) (store_inferior_registers): Replace PTRACE_ARG3_TYPE with PTRACE_TYPE_ARG3.
2004-08-15 01:37:04 +02:00
(PTRACE_TYPE_ARG3) &regs, 0) == -1)
2005-02-11 Andrew Cagney <cagney@gnu.org> Mark up error_no_arg, query, perror_with_name, complaint, and internal_error. * breakpoint.c, cp-abi.c, cp-namespace.c, cp-support.c: Update. * cris-tdep.c, dbxread.c, dictionary.c, dsrec.c: Update. * dummy-frame.c, dve3900-rom.c, dwarf2-frame.c, dwarf2expr.c: Update. * dwarf2read.c, dwarfread.c, elfread.c, event-loop.c: Update. * exceptions.c, exec.c, f-lang.c, findvar.c, fork-child.c: Update. * frame-unwind.c, frame.c, frv-linux-tdep.c, frv-tdep.c: Update. * gdb_assert.h, gdbarch.c, gdbtypes.c, gnu-nat.c: Update. * go32-nat.c, hppa-tdep.c, hppabsd-nat.c, hpread.c: Update. * i386-linux-nat.c, i386-nat.c, i386-tdep.c, i386bsd-nat.c: Update. * i386fbsd-nat.c, inf-ptrace.c, inf-ttrace.c, infcall.c: Update. * infcmd.c, inflow.c, infptrace.c, infrun.c, inftarg.c: Update. * interps.c, language.c, linespec.c, linux-nat.c: Update. * m32r-linux-nat.c, m68k-tdep.c, m68kbsd-nat.c: Update. * m68klinux-nat.c, m88kbsd-nat.c, macroexp.c, macroscope.c: Update. * macrotab.c, maint.c, mdebugread.c, memattr.c: Update. * mips-linux-tdep.c, mips-tdep.c, mips64obsd-nat.c: Update. * mipsnbsd-nat.c, mn10300-tdep.c, monitor.c, nto-procfs.c: Update. * objc-lang.c, objfiles.c, objfiles.h, ocd.c, osabi.c: Update. * parse.c, ppc-bdm.c, ppc-linux-nat.c, ppc-sysv-tdep.c: Update. * ppcnbsd-nat.c, ppcobsd-nat.c, printcmd.c, procfs.c: Update. * regcache.c, reggroups.c, remote-e7000.c, remote-mips.c: Update. * remote-rdp.c, remote-sds.c, remote-sim.c, remote-st.c: Update. * remote-utils.c, remote.c, rs6000-nat.c, rs6000-tdep.c: Update. * s390-nat.c, s390-tdep.c, sentinel-frame.c, serial.c: Update. * sh-tdep.c, sh3-rom.c, sh64-tdep.c, shnbsd-nat.c: Update. * solib-aix5.c, solib-svr4.c, solib.c, source.c: Update. * sparc-nat.c, stabsread.c, stack.c, symfile.c, symtab.c: Update. * symtab.h, target.c, tracepoint.c, ui-file.c, ui-out.c: Update. * utils.c, valops.c, valprint.c, vax-nat.c, vaxbsd-nat.c: Update. * win32-nat.c, xcoffread.c, xstormy16-tdep.c: Update. * cli/cli-cmds.c, cli/cli-logging.c, cli/cli-script.c: Update. * cli/cli-setshow.c, mi/mi-cmd-break.c, mi/mi-cmds.c: Update. * mi/mi-console.c, mi/mi-getopt.c, mi/mi-out.c: Update. * tui/tui-file.c, tui/tui-interp.c: Update.
2005-02-11 19:13:55 +01:00
perror_with_name (_("Couldn't write registers"));
}
static int
ppcobsd_supply_pcb (struct regcache *regcache, struct pcb *pcb)
{
struct gdbarch_tdep *tdep = gdbarch_tdep (get_regcache_arch (regcache));
struct switchframe sf;
struct callframe cf;
int i, regnum;
/* The following is true for OpenBSD 3.7:
The pcb contains %r1 (the stack pointer) at the point of the
context switch in cpu_switch(). At that point we have a stack
frame as described by `struct switchframe', and below that a call
frame as described by `struct callframe'. From this information
we reconstruct the register state as it would look when we are in
cpu_switch(). */
/* The stack pointer shouldn't be zero. */
if (pcb->pcb_sp == 0)
return 0;
read_memory (pcb->pcb_sp, (gdb_byte *)&sf, sizeof sf);
regcache_raw_supply (regcache, SP_REGNUM, &sf.sp);
regcache_raw_supply (regcache, tdep->ppc_cr_regnum, &sf.cr);
regcache_raw_supply (regcache, tdep->ppc_gp0_regnum + 2, &sf.fixreg2);
for (i = 0, regnum = tdep->ppc_gp0_regnum + 13; i < 19; i++, regnum++)
regcache_raw_supply (regcache, regnum, &sf.fixreg[i]);
read_memory (sf.sp, (gdb_byte *)&cf, sizeof cf);
regcache_raw_supply (regcache, PC_REGNUM, &cf.lr);
regcache_raw_supply (regcache, tdep->ppc_gp0_regnum + 30, &cf.r30);
regcache_raw_supply (regcache, tdep->ppc_gp0_regnum + 31, &cf.r31);
return 1;
}
/* Provide a prototype to silence -Wmissing-prototypes. */
void _initialize_ppcobsd_nat (void);
void
_initialize_ppcobsd_nat (void)
{
struct target_ops *t;
/* Add in local overrides. */
t = inf_ptrace_target ();
t->to_fetch_registers = ppcobsd_fetch_registers;
t->to_store_registers = ppcobsd_store_registers;
add_target (t);
/* General-purpose registers. */
ppcobsd_reg_offsets.r0_offset = offsetof (struct reg, gpr);
ppcobsd_reg_offsets.pc_offset = offsetof (struct reg, pc);
ppcobsd_reg_offsets.ps_offset = offsetof (struct reg, ps);
ppcobsd_reg_offsets.cr_offset = offsetof (struct reg, cnd);
ppcobsd_reg_offsets.lr_offset = offsetof (struct reg, lr);
ppcobsd_reg_offsets.ctr_offset = offsetof (struct reg, cnt);
ppcobsd_reg_offsets.xer_offset = offsetof (struct reg, xer);
ppcobsd_reg_offsets.mq_offset = offsetof (struct reg, mq);
/* Floating-point registers. */
ppcobsd_reg_offsets.f0_offset = offsetof (struct reg, fpr);
ppcobsd_reg_offsets.fpscr_offset = -1;
/* AltiVec registers. */
ppcobsd_reg_offsets.vr0_offset = offsetof (struct vreg, vreg);
ppcobsd_reg_offsets.vscr_offset = offsetof (struct vreg, vscr);
ppcobsd_reg_offsets.vrsave_offset = offsetof (struct vreg, vrsave);
/* Support debugging kernel virtual memory images. */
bsd_kvm_add_target (ppcobsd_supply_pcb);
}