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.
* rs6000-tdep.c (e500_store_return_value): Delete function.
(e500_extract_return_value): Delete function.
(rs6000_gdbarch_init): When SYSV, set "extract_return_value" and
"restore_return_value" to "ppc_sysv_abi_extract_return_value" and
"ppc_sysv_abi_restore_return_value" where applicable.
* ppc-tdep.h: (ppc_sysv_abi_store_return_value): Declare.
(ppc_sysv_abi_extract_return_value): Declare.
(ppc_sysv_abi_broken_store_return_value): Declare.
(ppc_sysv_abi_broken_extract_return_value): Declare.
(ppc_sysv_abi_broken_use_struct_convention:) Delete declaration.
* ppc-sysv-tdep.c (return_value_convention): Move definition to
start of file.
(do_ppc_sysv_return_value): New function.
(ppc_sysv_abi_extract_return_value): New function.
(ppc_sysv_abi_store_return_value): New function.
(ppc_sysv_abi_broken_extract_return_value): New function.
(ppc_sysv_abi_broken_store_return_value): New function.
(ppc_sysv_abi_use_struct_convention): Call
do_ppc_sysv_return_value.
* Makefile.in (ppc-sysv-tdep.o): Add $(gdb_assert_h).
* rs6000-tdep.c (rs6000_gdbarch_init): When 64 bit SysV ABI, set
push_dummy_call to ppc64_sysv_abi_push_dummy_call.
* ppc-sysv-tdep.c: Include "gdb_assert.h".
(ppc64_sysv_abi_push_dummy_call): New function.
(ppc64_sysv_abi_broken_push_dummy_call): New function.
* ppc-tdep.h (ppc64_sysv_abi_push_dummy_call): Declare.
(ppc64_sysv_abi_broken_push_dummy_call): Declare.
* rs6000-tdep.c (rs6000_gdbarch_init): When the 64 bit SysV ABI,
set extract_return_value, store_return_value and
use_struct_convention to ppc64_sysv_abi_extract_return_value,
ppc64_sysv_abi_store_return_value and
ppc64_sysv_abi_use_struct_convention.
* ppc-tdep.h (ppc64_sysv_abi_extract_return_value): Declare.
(ppc64_sysv_abi_store_return_value): Declare.
(ppc64_sysv_abi_use_struct_convention): Declare.
* ppc-sysv-tdep.c (enum return_value_convention): Define.
(ppc64_sysv_abi_extract_return_value): New function.
(ppc64_sysv_abi_store_return_value): New function.
(ppc64_sysv_abi_use_struct_convention): New function.
(ppc64_sysv_abi_return_value): New function.
GDB_OSABI_UNINITIALIZED.
* gdbarch.sh: Add osabi to struct gdbarch and to struct
gdbarch_info. Include "osabi.h" in gdbarch.c. Check osabi
in gdbarch_list_lookup_by_info and in gdbarch_update_p.
* gdbarch.c: Regenerated.
* gdbarch.h: Regenerated.
* osabi.c (gdbarch_lookup_osabi): Return GDB_OSABI_UNINITIALIZED if
there's no BFD.
(gdbarch_init_osabi): Remove osabi argument; use info.osabi.
* osabi.h (enum gdb_osabi): Move to defs.h.
(gdbarch_init_osabi): Update prototype.
* defs.h (enum gdb_osabi): Moved here.
* Makefile.in: Update dependencies.
Plus updates to alpha, arm, hppa, i386, mips, ns32k, ppc, sh, sparc, and vax
ports to match.
* ppc-tdep.h (struct gdbarch_tdep): Add ev registers.
* rs6000-tdep.c (rs6000_register_virtual_type): Return 64 bit
vector type for ev registers.
(e500_pseudo_register_read): New function.
(e500_pseudo_register_write): New function.
(e500_dwarf2_reg_to_regnum): New function.
(PPC_UISA_NOFP_SPRS): New macro.
(PPC_EV_REGS): New macro.
(PPC_GPRS_PSEUDO_REGS): New macro.
(registers_e500): New register set for e500.
(variants): Add e500 variant.
(rs6000_gdbarch_init): Move setting of pc, sp, fp regnums to
before setting architectural dependent variations. Initialize ev
registers numbers. Add case for e500 architecture. Set the
number of pseudo registers.
* ppc-linux-tdep.c (ppc_sysv_abi_use_struct_convention): New
function.
* ppc-tdep.h (ppc_sysv_abi_use_struct_convention): Export.
* rs6000-tdep.c (rs6000_gdbarch_init): Use different
structure returning convention for SYSV ABI case, but not
for GNU/Linux, FreeBSD, or NetBSD.
