ppc_fp0_regnum and ppc_fpscr_regnum: if they are -1, then this
processor variant lacks those registers.
(ppc_floating_point_unit_p): Change description to make it clear
that this returns info about the ISA, not the ABI.
* rs6000-tdep.c (ppc_floating_point_unit_p): Decide whether to
return true or false by checking tdep->ppc_fp0_regnum and
tdep->ppc_fpscr_regnum. The original code replicated the BFD
arch/mach switching done in rs6000_gdbarch_init; it's better to
keep that logic there, and just check the results here.
(rs6000_gdbarch_init): On the E500, set tdep->ppc_fp0_regnum and
tdep->ppc_fpscr_regnum to -1 to indicate that we have no
floating-point registers.
(ppc_supply_fpregset, ppc_collect_fpregset)
(rs6000_push_dummy_call, rs6000_extract_return_value)
(rs6000_store_return_value): Assert that we have floating-point
registers.
(rs6000_dwarf2_stab_reg_to_regnum): Add FIXME.
(rs6000_frame_cache): Don't note the locations at which
floating-point registers were saved if we have no fprs.
* aix-thread.c (supply_fprs, fill_fprs): Assert that we have FP
registers.
(fetch_regs_user_thread, fetch_regs_kernel_thread)
(store_regs_user_thread, store_regs_kernel_thread): Only call
supply_fprs / fill_fprs if we actually have floating-point
registers.
(special_register_p): Check ppc_fpscr_regnum before matching
against it.
(supply_sprs64, supply_sprs32, fill_sprs64, fill_sprs32): Don't
supply / collect fpscr if we don't have it.
* ppc-bdm.c: #include "gdb_assert.h".
(bdm_ppc_fetch_registers, bdm_ppc_store_registers): Assert that we
have floating-point registers, since I can't test this code on
FP-free systems to adapt it.
* ppc-linux-nat.c (ppc_register_u_addr): Don't match against the
fpscr and floating point register numbers if they don't exist.
(fetch_register): Assert that we have floating-point registers
before we reach the code that handles them.
(store_register): Same. And use tdep instead of calling
gdbarch_tdep again.
(fill_fpregset): Don't try to collect FP registers and fpscr if we
don't have them.
(ppc_linux_sigtramp_cache): Don't record the saved locations of
fprs and fpscr if we don't have them.
(ppc_linux_supply_fpregset): Don't supply fp regs and fpscr if we
don't have them.
* ppcnbsd-nat.c: #include "gdb_assert.h".
(getfpregs_supplies): Assert that we have floating-point registers.
* ppcnbsd-tdep.c (ppcnbsd_supply_fpreg, ppcnbsd_fill_fpreg): Same.
* ppcobsd-tdep.c: #include "gdb_assert.h".
(ppcobsd_supply_gregset, ppcobsd_collect_gregset): Assert that we
have floating-point registers.
* rs6000-nat.c (regmap): Don't match against the fpscr and
floating point register numbers if they don't exist.
(fetch_inferior_registers, store_inferior_registers,
fetch_core_registers): Only fetch / store / supply the
floating-point registers and the fpscr if we have them.
* Makefile.in (ppc-bdm.o, ppc-linux-nat.o, ppcnbsd-nat.o)
(ppcobsd-tdep.o): Update dependencies.
fill_gprs32, store_regs_kernel_thread): Use tdep->ppc_gp0_regnum
to recognize gpr regnums, instead of assuming that
tdep->ppc_fp0_regnum marks the end of the general-purpose
registers.
(base_ops): Rename to base_target.
(ops_attach): Rename to aix_thread_attach.
(ops_detach): Rename to aix_thread_detach.
(ops_resume): Rename to aix_thread_detach.
(ops_wait): Rename to aix_thread_wait.
(ops_kill): Rename to aix_thread_kill.
(init_ops): Rename to init_aix_thread_ops.
(ops_fetch_register): Rename to aix_thread_fetch_register.
(ops_store_register): Rename to aix_thread_store_register.
(ops_mourn_inferior): Rename to aix_thread_mourn_inferior.
(ops_thread_alive): Rename to aix_thread_thread_alive.
(ops_extra_thread_info: Rename to aix_thread_extra_thread_info.
(ops_pid_to_str): Rename to aix_thread_pid_to_str.
(ops_xfer_memory): Rename to aix_thread_xfer_memory.
(fetch_regs_lib): Rename to fetch_regs_user_thread.
(fetch_regs_kern): Rename to fetch_regs_kernel_thread.
(store_regs_lib): Rename to store_regs_user_thread.
(store_regs_kern): Rename to store_regs_kernel_thread.
(init_ops): Don't initialize ops.prepare_to_store.
(store_regs_kern): Pre-fetch register buffers from child,
because some registers may not be in the cache. Copy
regs from register cache only if they are cached.
(store_regs_lib): Copy regs from register cache only
if they are cached.
(fill_sprs32, (fill_sprs64, fill_fprs, fill_gprs32,
fill_gprs64): Ditto.
(fill_sprs64, fill_sprs32): Add selected asserts to make sure that
register sizes (from register cache) match size of buffer holding
register data.
(fill_sprs32): Change parameter types to match those in the ptrace()
buffer.
(store_regs_lib): Likewise, but for 32-bit temporary variables.
(ops_prepare_to_store): Rename loop variable ``i'' to ``regno''.
* aix-thread.c (supply_sprs64): Cosmetic change.
(supply_sprs32): Cosmetic change.
(fill_gprs64, fill_gprs32, fill_fprs, fill_sprs32): New funcs.
(fill_sprs64): Use regcache_collect instead of read_register.
(store_regs_lib): Use regcache_collect instead of
read_register. Use fill_sprs32 instead of fill_sprs64,
if debugging a 32-bit architecture.
(store_regs_kern): Use fill_gprs64 etc. to pull the values
out of the register cache, instead of passing a pointer into
the register cache directly to ptrace. Use regcache_collect
insteaad of read_register.
(ops_prepare_to_store): Use target_read_registers instead
of read_register_bytes.
Jim Blandy