* ppcobsd-nat.c: Include "gdb_assert.h".
[PT_GETFPREGS] (getfpregs_supplies): New function. (ppcobsd_fetch_registers, ppcobsd_fetch_registers): Hanlde OS versions that have PT_GETFPREGS. (_initialize_ppcobsd_nat) [PT_GETFPREGS]: Initialize ppcobsd_fpreg_offsets. * ppcobsd-tdep.h (ppcobsd_fpreg_offsets, ppcobsd_fpregset): Declare. * ppcobsd-tdep.c (ppcobsd_fpreg_offsets, ppcobsd_fpregset): New variables. (_initialize_ppcobsd_tdep): Initialize ppcobsd_fpreg_offsets. * Makefile.in (ppcobsd-nat.o): Update dependencies.
This commit is contained in:
Mark Kettenis
parent
dc6641a558
commit
8599da2d51
@ -1,3 +1,18 @@
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2006-05-15 Mark Kettenis <kettenis@gnu.org>
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* ppcobsd-nat.c: Include "gdb_assert.h".
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[PT_GETFPREGS] (getfpregs_supplies): New function.
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(ppcobsd_fetch_registers, ppcobsd_fetch_registers): Hanlde OS
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versions that have PT_GETFPREGS.
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(_initialize_ppcobsd_nat) [PT_GETFPREGS]: Initialize
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ppcobsd_fpreg_offsets.
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* ppcobsd-tdep.h (ppcobsd_fpreg_offsets, ppcobsd_fpregset):
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Declare.
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* ppcobsd-tdep.c (ppcobsd_fpreg_offsets, ppcobsd_fpregset): New
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variables.
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(_initialize_ppcobsd_tdep): Initialize ppcobsd_fpreg_offsets.
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* Makefile.in (ppcobsd-nat.o): Update dependencies.
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2006-05-15 Daniel Jacobowitz <dan@codesourcery.com>
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* configure.ac: Use GCC_HEADER_STDINT.
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@ -2440,8 +2440,8 @@ ppcnbsd-tdep.o: ppcnbsd-tdep.c $(defs_h) $(gdbcore_h) $(gdb_types_h) \
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$(tramp_frame_h) $(gdb_assert_h) $(gdb_string_h) \
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$(ppc_tdep_h) $(ppcnbsd_tdep_h) $(solib_svr4_h)
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ppcobsd-nat.o: ppcobsd-nat.c $(defs_h) $(gdbcore_h) $(inferior_h) \
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$(regcache_h) $(ppc_tdep_h) $(ppcobsd_tdep_h) $(bsd_kvm_h) \
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$(inf_ptrace_h)
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$(regcache_h) $(gdb_assert_h) $(ppc_tdep_h) $(ppcobsd_tdep_h) \
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$(bsd_kvm_h) $(inf_ptrace_h)
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ppcobsd-tdep.o: ppcobsd-tdep.c $(defs_h) $(arch_utils_h) $(floatformat_h) \
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$(frame_h) $(frame_unwind_h) $(osabi_h) $(regcache_h) $(regset_h) \
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$(symtab_h) $(trad_frame_h) $(gdb_assert_h) $(gdb_string_h) \
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@ -1,6 +1,6 @@
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/* Native-dependent code for OpenBSD/powerpc.
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Copyright (C) 2004, 2005 Free Software Foundation, Inc.
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Copyright (C) 2004, 2005, 2006 Free Software Foundation, Inc.
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This file is part of GDB.
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@ -24,6 +24,7 @@
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#include "inferior.h"
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#include "regcache.h"
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#include "gdb_assert.h"
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#include <stddef.h>
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#include <sys/types.h>
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#include <sys/ptrace.h>
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@ -37,8 +38,37 @@
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#include "inf-ptrace.h"
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#include "bsd-kvm.h"
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/* OpenBSD/powerpc doesn't have PT_GETFPREGS/PT_SETFPREGS like
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NetBSD/powerpc and FreeBSD/powerpc. */
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/* OpenBSD/powerpc didn't have PT_GETFPREGS/PT_SETFPREGS until release
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4.0. On older releases the floating-point registers are handled by
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PT_GETREGS/PT_SETREGS, but fpscr wasn't available.. */
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#ifdef PT_GETFPREGS
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/* Returns true if PT_GETFPREGS fetches this register. */
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static int
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getfpregs_supplies (int regnum)
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{
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struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch);
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/* FIXME: jimb/2004-05-05: Some PPC variants don't have floating
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point registers. Traditionally, GDB's register set has still
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listed the floating point registers for such machines, so this
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code is harmless. However, the new E500 port actually omits the
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floating point registers entirely from the register set --- they
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don't even have register numbers assigned to them.
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It's not clear to me how best to update this code, so this assert
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will alert the first person to encounter the NetBSD/E500
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combination to the problem. */
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gdb_assert (ppc_floating_point_unit_p (current_gdbarch));
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return ((regnum >= tdep->ppc_fp0_regnum
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&& regnum < tdep->ppc_fp0_regnum + ppc_num_fprs)
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|| regnum == tdep->ppc_fpscr_regnum);
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}
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#endif /* PT_GETFPREGS */
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/* Fetch register REGNUM from the inferior. If REGNUM is -1, do this
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for all registers. */
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@ -52,8 +82,26 @@ ppcobsd_fetch_registers (int regnum)
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(PTRACE_TYPE_ARG3) ®s, 0) == -1)
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perror_with_name (_("Couldn't get registers"));
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ppcobsd_supply_gregset (&ppcobsd_gregset, current_regcache, -1,
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®s, sizeof regs);
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ppc_supply_gregset (&ppcobsd_gregset, current_regcache, -1,
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®s, sizeof regs);
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#ifndef PT_GETFPREGS
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ppc_supply_fpregset (&ppcobsd_gregset, current_regcache, -1,
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®s, sizeof regs);
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#endif
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#ifdef PT_GETFPREGS
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if (regnum == -1 || getfpregs_supplies (regnum))
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{
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struct fpreg fpregs;
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if (ptrace (PT_GETFPREGS, PIDGET (inferior_ptid),
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(PTRACE_TYPE_ARG3) &fpregs, 0) == -1)
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perror_with_name (_("Couldn't get floating point status"));
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ppc_supply_fpregset (&ppcobsd_fpregset, current_regcache, -1,
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&fpregs, sizeof fpregs);
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}
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#endif
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}
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/* Store register REGNUM back into the inferior. If REGNUM is -1, do
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@ -68,12 +116,34 @@ ppcobsd_store_registers (int regnum)
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(PTRACE_TYPE_ARG3) ®s, 0) == -1)
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perror_with_name (_("Couldn't get registers"));
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ppcobsd_collect_gregset (&ppcobsd_gregset, current_regcache,
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regnum, ®s, sizeof regs);
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ppc_collect_gregset (&ppcobsd_gregset, current_regcache,
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regnum, ®s, sizeof regs);
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#ifndef PT_GETFPREGS
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ppc_collect_fpregset (&ppcobsd_gregset, current_regcache,
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regnum, ®s, sizeof regs);
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#endif
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if (ptrace (PT_SETREGS, PIDGET (inferior_ptid),
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(PTRACE_TYPE_ARG3) ®s, 0) == -1)
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perror_with_name (_("Couldn't write registers"));
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#ifdef PT_GETFPREGS
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if (regnum == -1 || getfpregs_supplies (regnum))
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{
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struct fpreg fpregs;
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if (ptrace (PT_GETFPREGS, PIDGET (inferior_ptid),
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(PTRACE_TYPE_ARG3) &fpregs, 0) == -1)
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perror_with_name (_("Couldn't get floating point status"));
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ppc_collect_fpregset (&ppcobsd_fpregset, current_regcache,
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regnum, &fpregs, sizeof fpregs);
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if (ptrace (PT_SETFPREGS, PIDGET (inferior_ptid),
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(PTRACE_TYPE_ARG3) &fpregs, 0) == -1)
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perror_with_name (_("Couldn't write floating point status"));
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}
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#endif
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}
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@ -141,6 +211,10 @@ _initialize_ppcobsd_nat (void)
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/* Floating-point registers. */
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ppcobsd_reg_offsets.f0_offset = offsetof (struct reg, fpr);
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ppcobsd_reg_offsets.fpscr_offset = -1;
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#ifdef PT_GETFPREGS
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ppcobsd_fpreg_offsets.f0_offset = offsetof (struct fpreg, fpr);
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ppcobsd_fpreg_offsets.fpscr_offset = offsetof (struct fpreg, fpscr);
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#endif
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/* AltiVec registers. */
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ppcobsd_reg_offsets.vr0_offset = offsetof (struct vreg, vreg);
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@ -1,6 +1,6 @@
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/* Target-dependent code for OpenBSD/powerpc.
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Copyright (C) 2004, 2005 Free Software Foundation, Inc.
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Copyright (C) 2004, 2005, 2006 Free Software Foundation, Inc.
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This file is part of GDB.
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@ -39,6 +39,7 @@
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/* Register offsets from <machine/reg.h>. */
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struct ppc_reg_offsets ppcobsd_reg_offsets;
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struct ppc_reg_offsets ppcobsd_fpreg_offsets;
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/* Core file support. */
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@ -102,6 +103,12 @@ struct regset ppcobsd_gregset =
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ppcobsd_supply_gregset
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};
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struct regset ppcobsd_fpregset =
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{
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&ppcobsd_fpreg_offsets,
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ppc_supply_fpregset
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};
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/* Return the appropriate register set for the core section identified
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by SECT_NAME and SECT_SIZE. */
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@ -341,4 +348,11 @@ _initialize_ppcobsd_tdep (void)
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ppcobsd_reg_offsets.vscr_offset = 512;
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ppcobsd_reg_offsets.vrsave_offset = 520;
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}
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if (ppcobsd_fpreg_offsets.fpscr_offset == 0)
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{
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/* Floating-point registers. */
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ppcobsd_reg_offsets.f0_offset = 0;
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ppcobsd_reg_offsets.fpscr_offset = 256;
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}
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}
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@ -1,6 +1,6 @@
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/* Target-dependent code for OpenBSD/powerpc.
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Copyright (C) 2004 Free Software Foundation, Inc.
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Copyright (C) 2004, 2006 Free Software Foundation, Inc.
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This file is part of GDB.
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@ -29,9 +29,11 @@ struct regcache;
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/* Register offsets for OpenBSD/powerpc. */
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extern struct ppc_reg_offsets ppcobsd_reg_offsets;
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extern struct ppc_reg_offsets ppcobsd_fpreg_offsets;
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/* Register sets for OpenBSD/powerpc. */
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extern struct regset ppcobsd_gregset;
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extern struct regset ppcobsd_fpregset;
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/* Supply register REGNUM in the general-purpose register set REGSET
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