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old-cross-binutils/gdb/gdbserver/linux-ppc-low.c
Pedro Alves 3aee891821 [GDBserver] Multi-process + multi-arch 
This patch makes GDBserver support multi-process + biarch.

Currently, if you're debugging more than one process at once with a
single gdbserver (in extended-remote mode), then all processes must
have the same architecture (e.g., 64-bit vs 32-bit).  Otherwise, you
see this:

Added inferior 2
[Switching to inferior 2 [<null>] (<noexec>)]
Reading symbols from /home/pedro/gdb/tests/main32...done.
Temporary breakpoint 2 at 0x4004cf: main. (2 locations)
Starting program: /home/pedro/gdb/tests/main32
warning: Selected architecture i386 is not compatible with reported target architecture i386:x86-64
warning: Architecture rejected target-supplied description
Remote 'g' packet reply is too long: 000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000090cfffff0000000000000000000000000000000000000000000000000000000000020000000000000000000000000000000000000000000000000000000000000000000000000000b042f7460000000000020000230000002b0000002b0000002b000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000007f03000000000000ffff0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000801f00003b0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
... etc, etc ...

Even though the process was running a 32-bit program, GDBserver sent
back to GDB a register set in 64-bit layout.

A patch (http://sourceware.org/ml/gdb-patches/2012-11/msg00228.html) a
while ago made GDB track a target_gdbarch per inferior, and as
consequence, fetch a target description per-inferior.  This patch is
the GDBserver counterpart, that makes GDBserver keep track of each
process'es XML target description and register layout.  So in the
example above, GDBserver will send the correct register set in 32-bit
layout to GDB.

A new "struct target_desc" object (tdesc for short) is added, that
holds the target description and register layout information about
each process.  Each `struct process_info' holds a pointer to a target
description.  The regcache also gains a pointer to a target
description, mainly for convenience, and parallel with GDB (and
possible future support for programs that flip processor modes).

The low target's arch_setup routines are responsible for setting the
process'es correct tdesc.  This isn't that much different to how
things were done before, except that instead of detecting the inferior
process'es architecture and calling the corresponding
init_registers_FOO routine, which would change the regcache layout
globals and recreate the threads' regcaches, the regcache.c globals
are gone, and the init_registers_$BAR routines now each initialize a
separate global struct target_desc object (one for each arch variant
GDBserver supports), and so all the init_registers_$BAR routines that
are built into GDBserver are called early at GDBserver startup time
(similarly to how GDB handles its built-in target descriptions), and
then the arch_setup routine is responsible for making
process_info->tdesc point to one of these target description globals.
The regcache module is all parameterized to get the regcache's layout
from the tdesc object instead of the old register_bytes, etc. globals.

The threads' regcaches are now created lazily.  The old scheme where
we created each of them when we added a new thread doesn't work
anymore, because we add the main thread/lwp before we see it stop for
the first time, and it is only when we see the thread stop for the
first time that we have a chance of determining the inferior's
architecture (through the_low_target.arch_setup).  Therefore when we
add the main thread we don't know which architecture/tdesc its
regcache should have.

This patch makes the gdb.multi/multi-arch.exp test now pass against
(extended-remote) GDBserver.  It currently fails, without this patch.

The IPA also uses the regcache, so it gains a new global struct
target_desc pointer, which points at the description of the process it
is loaded in.

Re. the linux-low.c & friends changes.  Since the register map
etc. may differ between processes (64-bit vs 32-bit) etc., the
linux_target_ops num_regs, regmap and regset_bitmap data fields are no
longer sufficient.  A new method is added in their place that returns
a pointer to a new struct that includes all info linux-low.c needs to
access registers of the current inferior.

The patch/discussion that originally introduced
linux-low.c:disabled_regsets mentions that the disabled_regsets set
may be different per mode (in a biarch setup), and indeed that is
cleared whenever we start a new (first) inferior, so that global is
moved as well behind the new `struct regs_info'.

On the x86 side:

I simply replaced the i387-fp.c:num_xmm_registers global with a check
for 64-bit or 32-bit process, which is equivalent to how the global
was set.  This avoided coming up with some more general mechanism that
would work for all targets that use this module (GNU/Linux, Windows,
etc.).

Tested:

  GNU/Linux IA64
  GNU/Linux MIPS64
  GNU/Linux PowerPC (Fedora 16)
  GNU/Linux s390x (Fedora 16)
  GNU/Linux sparc64 (Debian)
  GNU/Linux x86_64, -m64 and -m32 (Fedora 17)

Cross built, and smoke tested:

  i686-w64-mingw32, under Wine.
  GNU/Linux TI C6x, by Yao Qi.

Cross built but otherwise not tested:

  aarch64-linux-gnu
  arm-linux-gnu
  m68k-linux
  nios2-linux-gnu
  sh-linux-gnu
  spu
  tilegx-unknown-linux-gnu

Completely untested:

  GNU/Linux Blackfin
  GNU/Linux CRIS
  GNU/Linux CRISv32
  GNU/Linux TI Xtensa
  GNU/Linux M32R
  LynxOS
  QNX NTO

gdb/gdbserver/
2013-06-07  Pedro Alves  <palves@redhat.com>

	* Makefile.in (OBS): Add tdesc.o.
	(IPA_OBJS): Add tdesc-ipa.o.
	(tdesc-ipa.o): New rule.
	* ax.c (gdb_eval_agent_expr): Adjust register_size call to new
	interface.
	* linux-low.c (new_inferior): Delete.
	(disabled_regsets, num_regsets): Delete.
	(linux_add_process): Adjust to set the new per-process
	new_inferior flag.
	(linux_detach_one_lwp): Adjust to call regcache_invalidate_thread.
	(linux_wait_for_lwp): Adjust.  Only call arch_setup if the event
	was a stop.  When calling arch_setup, switch the current inferior
	to the thread that got an event.
	(linux_resume_one_lwp): Adjust to call regcache_invalidate_thread.
	(regsets_fetch_inferior_registers)
	(regsets_store_inferior_registers): New regsets_info parameter.
	Adjust to use it.
	(linux_register_in_regsets): New regs_info parameter.  Adjust to
	use it.
	(register_addr, fetch_register, store_register): New usrregs_info
	parameter.  Adjust to use it.
	(usr_fetch_inferior_registers, usr_store_inferior_registers): New
	parameter regs_info.  Adjust to use it.
	(linux_fetch_registers): Get the current inferior's regs_info, and
	adjust to use it.
	(linux_store_registers): Ditto.
	[HAVE_LINUX_REGSETS] (initialize_regsets_info): New.
	(initialize_low): Don't initialize the target_regsets here.  Call
	initialize_low_arch.
	* linux-low.h (target_regsets): Delete declaration.
	(struct regsets_info): New.
	(struct usrregs_info): New.
	(struct regs_info): New.
	(struct process_info_private) <new_inferior>: New field.
	(struct linux_target_ops): Delete the num_regs, regmap, and
	regset_bitmap fields.  New field regs_info.
	[HAVE_LINUX_REGSETS] (initialize_regsets_info): Declare.
	* i387-fp.c (num_xmm_registers): Delete.
	(i387_cache_to_fsave, i387_fsave_to_cache): Adjust find_regno
	calls to new interface.
	(i387_cache_to_fxsave, i387_cache_to_xsave, i387_fxsave_to_cache)
	(i387_xsave_to_cache): Adjust find_regno calls to new interface.
	Infer the number of xmm registers from the regcache's target
	description.
	* i387-fp.h (num_xmm_registers): Delete.
	* inferiors.c (add_thread): Don't install the thread's regcache
	here.
	* proc-service.c (gregset_info): Fetch the current inferior's
	regs_info.  Adjust to use it.
	* regcache.c: Include tdesc.h.
	(register_bytes, reg_defs, num_registers)
	(gdbserver_expedite_regs): Delete.
	(get_thread_regcache): If the thread doesn't have a regcache yet,
	create one, instead of aborting gdbserver.
	(regcache_invalidate_one): Rename to ...
	(regcache_invalidate_thread): ... this.
	(regcache_invalidate_one): New.
	(regcache_invalidate): Only invalidate registers of the current
	process.
	(init_register_cache): Add target_desc parameter, and use it.
	(new_register_cache): Ditto.  Assert the target description has a
	non zero registers_size.
	(regcache_cpy): Add assertions.  Adjust.
	(realloc_register_cache, set_register_cache): Delete.
	(registers_to_string, registers_from_string): Adjust.
	(find_register_by_name, find_regno, find_register_by_number)
	(register_cache_size): Add target_desc parameter, and use it.
	(free_register_cache_thread, free_register_cache_thread_one)
	(regcache_release, register_cache_size): New.
	(register_size): Add target_desc parameter, and use it.
	(register_data, supply_register, supply_register_zeroed)
	(supply_regblock, supply_register_by_name, collect_register)
	(collect_register_as_string, collect_register_by_name): Adjust.
	* regcache.h (struct target_desc): Forward declare.
	(struct regcache) <tdesc>: New field.
	(init_register_cache, new_register_cache): Add target_desc
	parameter.
	(regcache_invalidate_thread): Declare.
	(regcache_invalidate_one): Delete declaration.
	(regcache_release): Declare.
	(find_register_by_number, register_cache_size, register_size)
	(find_regno): Add target_desc parameter.
	(gdbserver_expedite_regs, gdbserver_xmltarget): Delete
	declarations.
	* remote-utils.c: Include tdesc.h.
	(outreg, prepare_resume_reply): Adjust.
	* server.c: Include tdesc.h.
	(gdbserver_xmltarget): Delete declaration.
	(get_features_xml, process_serial_event): Adjust.
	* server.h [IN_PROCESS_AGENT] (struct target_desc): Forward
	declare.
	(struct process_info) <tdesc>: New field.
	(ipa_tdesc): Declare.
	* tdesc.c: New file.
	* tdesc.h: New file.
	* tracepoint.c: Include tdesc.h.
	[IN_PROCESS_AGENT] (ipa_tdesc): Define.
	(get_context_regcache): Adjust to pass ipa_tdesc down.
	(do_action_at_tracepoint): Adjust to get the register cache size
	from the context regcache's description.
	(traceframe_walk_blocks): Adjust to get the register cache size
	from the current trace frame's description.
	(traceframe_get_pc): Adjust to get current trace frame's
	description and pass it down.
	(gdb_collect): Adjust to get the register cache size from the
	IPA's description.
	* linux-amd64-ipa.c (tdesc_amd64_linux): Declare.
	(gdbserver_xmltarget): Delete.
	(initialize_low_tracepoint): Set the ipa's target description.
	* linux-i386-ipa.c (tdesc_i386_linux): Declare.
	(initialize_low_tracepoint): Set the ipa's target description.
	* linux-x86-low.c: Include tdesc.h.
	[__x86_64__] (is_64bit_tdesc): New.
	(ps_get_thread_area, x86_get_thread_area): Use it.
	(i386_cannot_store_register): Rename to ...
	(x86_cannot_store_register): ... this.  Use is_64bit_tdesc.
	(i386_cannot_fetch_register): Rename to ...
	(x86_cannot_fetch_register): ... this.  Use is_64bit_tdesc.
	(x86_fill_gregset, x86_store_gregset): Adjust register_size calls
	to new interface.
	(target_regsets): Rename to ...
	(x86_regsets): ... this.
	(x86_get_pc, x86_set_pc): Adjust register_size calls to new
	interface.
	(x86_siginfo_fixup): Use is_64bit_tdesc.
	[__x86_64__] (tdesc_amd64_linux, tdesc_amd64_avx_linux)
	(tdesc_x32_avx_linux, tdesc_x32_linux)
	(tdesc_i386_linux, tdesc_i386_mmx_linux, tdesc_i386_avx_linux):
	Declare.
	(x86_linux_update_xmltarget): Delete.
	(I386_LINUX_XSAVE_XCR0_OFFSET): Define.
	(have_ptrace_getfpxregs, have_ptrace_getregset): New.
	(AMD64_LINUX_USER64_CS): New.
	(x86_linux_read_description): New, based on
	x86_linux_update_xmltarget.
	(same_process_callback): New.
	(x86_arch_setup_process_callback): New.
	(x86_linux_update_xmltarget): New.
	(x86_regsets_info): New.
	(amd64_linux_regs_info): New.
	(i386_linux_usrregs_info): New.
	(i386_linux_regs_info): New.
	(x86_linux_regs_info): New.
	(x86_arch_setup): Reimplement.
	(x86_install_fast_tracepoint_jump_pad): Use is_64bit_tdesc.
	(x86_emit_ops): Ditto.
	(the_low_target): Adjust.  Install x86_linux_regs_info,
	x86_cannot_fetch_register, and x86_cannot_store_register.
	(initialize_low_arch): New.
	* linux-ia64-low.c (tdesc_ia64): Declare.
	(ia64_fetch_register): Adjust.
	(ia64_usrregs_info, regs_info): New globals.
	(ia64_regs_info): New function.
	(the_low_target): Adjust.
	(initialize_low_arch): New function.
	* linux-sparc-low.c (tdesc_sparc64): Declare.
	(sparc_fill_gregset_to_stack, sparc_store_gregset_from_stack):
	Adjust.
	(sparc_arch_setup): New function.
	(sparc_regsets_info, sparc_usrregs_info, regs_info): New globals.
	(the_low_target): Adjust.
	(initialize_low_arch): New function.
	* linux-ppc-low.c (tdesc_powerpc_32l, tdesc_powerpc_altivec32l)
	(tdesc_powerpc_cell32l, tdesc_powerpc_vsx32l)
	(tdesc_powerpc_isa205_32l, tdesc_powerpc_isa205_altivec32l)
	(tdesc_powerpc_isa205_vsx32l, tdesc_powerpc_e500l)
	(tdesc_powerpc_64l, tdesc_powerpc_altivec64l)
	(tdesc_powerpc_cell64l, tdesc_powerpc_vsx64l)
	(tdesc_powerpc_isa205_64l, tdesc_powerpc_isa205_altivec64l)
	(tdesc_powerpc_isa205_vsx64l): Declare.
	(ppc_cannot_store_register, ppc_collect_ptrace_register)
	(ppc_supply_ptrace_register, parse_spufs_run, ppc_get_pc)
	(ppc_set_pc, ppc_get_hwcap): Adjust.
	(ppc_usrregs_info): Forward declare.
	(!__powerpc64__) ppc_regmap_adjusted: New global.
	(ppc_arch_setup): Adjust to the current process'es target
	description.
	(ppc_fill_vsxregset, ppc_store_vsxregset, ppc_fill_vrregset)
	(ppc_store_vrregset, ppc_fill_evrregset, ppc_store_evrregse)
	(ppc_store_evrregset): Adjust.
	(target_regsets): Rename to ...
	(ppc_regsets): ... this, and make static.
	(ppc_usrregs_info, ppc_regsets_info, regs_info): New globals.
	(ppc_regs_info): New function.
	(the_low_target): Adjust.
	(initialize_low_arch): New function.
	* linux-s390-low.c (tdesc_s390_linux32, tdesc_s390_linux32v1)
	(tdesc_s390_linux32v2, tdesc_s390_linux64, tdesc_s390_linux64v1)
	(tdesc_s390_linux64v2, tdesc_s390x_linux64, tdesc_s390x_linux64v1)
	(tdesc_s390x_linux64v2): Declare.
	(s390_collect_ptrace_register, s390_supply_ptrace_register)
	(s390_fill_gregset, s390_store_last_break): Adjust.
	(target_regsets): Rename to ...
	(s390_regsets): ... this, and make static.
	(s390_get_pc, s390_set_pc): Adjust.
	(s390_get_hwcap): New target_desc parameter, and use it.
	[__s390x__] (have_hwcap_s390_high_gprs): New global.
	(s390_arch_setup): Adjust to set the current process'es target
	description.  Don't adjust the regmap.
	(s390_usrregs_info, s390_regsets_info, regs_info): New globals.
	[__s390x__] (s390_usrregs_info_3264, s390_regsets_info_3264)
	(regs_info_3264): New globals.
	(s390_regs_info): New function.
	(the_low_target): Adjust.
	(initialize_low_arch): New function.
	* linux-mips-low.c (tdesc_mips_linux, tdesc_mips_dsp_linux)
	(tdesc_mips64_linux, tdesc_mips64_dsp_linux): Declare.
	[__mips64] (init_registers_mips_linux)
	(init_registers_mips_dsp_linux): Delete defines.
	[__mips64] (tdesc_mips_linux, tdesc_mips_dsp_linux): New defines.
	(have_dsp): New global.
	(mips_read_description): New, based on mips_arch_setup.
	(mips_arch_setup): Reimplement.
	(get_usrregs_info): New function.
	(mips_cannot_fetch_register, mips_cannot_store_register)
	(mips_get_pc, mips_set_pc, mips_fill_gregset, mips_store_gregset)
	(mips_fill_fpregset, mips_store_fpregset): Adjust.
	(target_regsets): Rename to ...
	(mips_regsets): ... this, and make static.
	(mips_regsets_info, mips_dsp_usrregs_info, mips_usrregs_info)
	(dsp_regs_info, regs_info): New globals.
	(mips_regs_info): New function.
	(the_low_target): Adjust.
	(initialize_low_arch): New function.
	* linux-arm-low.c (tdesc_arm, tdesc_arm_with_iwmmxt)
	(tdesc_arm_with_vfpv2, tdesc_arm_with_vfpv3, tdesc_arm_with_neon):
	Declare.
	(arm_fill_vfpregset, arm_store_vfpregset): Adjust.
	(arm_read_description): New, with bits factored from
	arm_arch_setup.
	(arm_arch_setup): Reimplement.
	(target_regsets): Rename to ...
	(arm_regsets): ... this, and make static.
	(arm_regsets_info, arm_usrregs_info, regs_info): New globals.
	(arm_regs_info): New function.
	(the_low_target): Adjust.
	(initialize_low_arch): New function.
	* linux-m68k-low.c (tdesc_m68k): Declare.
	(target_regsets): Rename to ...
	(m68k_regsets): ... this, and make static.
	(m68k_regsets_info, m68k_usrregs_info, regs_info): New globals.
	(m68k_regs_info): New function.
	(m68k_arch_setup): New function.
	(the_low_target): Adjust.
	(initialize_low_arch): New function.
	* linux-sh-low.c (tdesc_sharch): Declare.
	(target_regsets): Rename to ...
	(sh_regsets): ... this, and make static.
	(sh_regsets_info, sh_usrregs_info, regs_info): New globals.
	(sh_regs_info, sh_arch_setup): New functions.
	(the_low_target): Adjust.
	(initialize_low_arch): New function.
	* linux-bfin-low.c (tdesc_bfin): Declare.
	(bfin_arch_setup): New function.
	(bfin_usrregs_info, regs_info): New globals.
	(bfin_regs_info): New function.
	(the_low_target): Adjust.
	(initialize_low_arch): New function.
	* linux-cris-low.c (tdesc_cris): Declare.
	(cris_arch_setup): New function.
	(cris_usrregs_info, regs_info): New globals.
	(cris_regs_info): New function.
	(the_low_target): Adjust.
	(initialize_low_arch): New function.
	* linux-cris-low.c (tdesc_crisv32): Declare.
	(cris_arch_setup): New function.
	(cris_regsets_info, cris_usrregs_info, regs_info): New globals.
	(cris_regs_info): New function.
	(the_low_target): Adjust.
	(initialize_low_arch): New function.
	* linux-m32r-low.c (tdesc_m32r): Declare.
	(m32r_arch_setup): New function.
	(m32r_usrregs_info, regs_info): New globals.
	(m32r_regs_info): Adjust.
	(initialize_low_arch): New function.
	* linux-tic6x-low.c (tdesc_tic6x_c64xp_linux)
	(tdesc_tic6x_c64x_linux, tdesc_tic6x_c62x_linux): Declare.
	(tic6x_usrregs_info): Forward declare.
	(tic6x_read_description): New function, based on ...
	(tic6x_arch_setup): ... this.  Reimplement.
	(target_regsets): Rename to ...
	(tic6x_regsets): ... this, and make static.
	(tic6x_regsets_info, tic6x_usrregs_info, regs_info): New globals.
	(tic6x_regs_info): New function.
	(the_low_target): Adjust.
	(initialize_low_arch): New function.
	* linux-xtensa-low.c (tdesc_xtensa): Declare.
	(xtensa_fill_gregset, xtensa_store_gregset): Adjust.
	(target_regsets): Rename to ...
	(xtensa_regsets): ... this, and make static.
	(xtensa_regsets_info, xtensa_usrregs_info, regs_info): New
	globals.
	(xtensa_arch_setup, xtensa_regs_info): New functions.
	(the_low_target): Adjust.
	(initialize_low_arch): New function.
	* linux-nios2-low.c (tdesc_nios2_linux): Declare.
	(nios2_arch_setup): Set the current process'es tdesc.
	(target_regsets): Rename to ...
	(nios2_regsets): ... this.
	(nios2_regsets_info, nios2_usrregs_info, regs_info): New globals.
	(nios2_regs_info): New function.
	(the_low_target): Adjust.
	(initialize_low_arch): New function.
        * linux-aarch64-low.c (tdesc_aarch64): Declare.
        (aarch64_arch_setup): Set the current process'es tdesc.
        (target_regsets): Rename to ...
        (aarch64_regsets): ... this.
        (aarch64_regsets_info, aarch64_usrregs_info, regs_info): New globals.
        (aarch64_regs_info): New function.
        (the_low_target): Adjust.
        (initialize_low_arch): New function.
	* linux-tile-low.c (tdesc_tilegx, tdesc_tilegx32): Declare
	globals.
	(target_regsets): Rename to ...
	(tile_regsets): ... this.
	(tile_regsets_info, tile_usrregs_info, regs_info): New globals.
	(tile_regs_info): New function.
	(tile_arch_setup): Set the current process'es tdesc.
	(the_low_target): Adjust.
	(initialize_low_arch): New function.
	* spu-low.c (tdesc_spu): Declare.
	(spu_create_inferior, spu_attach): Set the new process'es tdesc.
	* win32-arm-low.c (tdesc_arm): Declare.
	(arm_arch_setup): New function.
	(the_low_target): Install arm_arch_setup instead of
	init_registers_arm.
	* win32-i386-low.c (tdesc_i386, tdesc_amd64): Declare.
	(init_windows_x86): Rename to ...
	(i386_arch_setup): ... this.  Set `win32_tdesc'.
	(the_low_target): Adjust.
	* win32-low.c (win32_tdesc): New global.
	(child_add_thread): Don't create the thread cache here.
	(do_initial_child_stuff): Set the new process'es tdesc.
	* win32-low.h (struct target_desc): Forward declare.
	(win32_tdesc): Declare.
	* lynx-i386-low.c (tdesc_i386): Declare global.
	(lynx_i386_arch_setup): Set `lynx_tdesc'.
	* lynx-low.c (lynx_tdesc): New global.
	(lynx_add_process): Set the new process'es tdesc.
	* lynx-low.h (struct target_desc): Forward declare.
	(lynx_tdesc): Declare global.
	* lynx-ppc-low.c (tdesc_powerpc_32): Declare global.
	(lynx_ppc_arch_setup): Set `lynx_tdesc'.
	* nto-low.c (nto_tdesc): New global.
	(do_attach): Set the new process'es tdesc.
	* nto-low.h (struct target_desc): Forward declare.
	(nto_tdesc): Declare.
	* nto-x86-low.c (tdesc_i386): Declare.
	(nto_x86_arch_setup): Set `nto_tdesc'.

gdb/
2013-06-07  Pedro Alves  <palves@redhat.com>

	* regformats/regdat.sh: Output #include tdesc.h.  Make globals
	static.  Output a global target description pointer.
	(init_registers_${name}): Adjust to initialize a
	target description structure.
2013-06-07 10:46:59 +00:00

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/* GNU/Linux/PowerPC specific low level interface, for the remote server for
GDB.
Copyright (C) 1995-2013 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 3 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, see <http://www.gnu.org/licenses/>. */
#include "server.h"
#include "linux-low.h"
#include <elf.h>
#include <asm/ptrace.h>
/* These are in <asm/cputable.h> in current kernels. */
#define PPC_FEATURE_HAS_VSX 0x00000080
#define PPC_FEATURE_HAS_ALTIVEC 0x10000000
#define PPC_FEATURE_HAS_SPE 0x00800000
#define PPC_FEATURE_CELL 0x00010000
#define PPC_FEATURE_HAS_DFP 0x00000400
static unsigned long ppc_hwcap;
/* Defined in auto-generated file powerpc-32l.c. */
void init_registers_powerpc_32l (void);
extern const struct target_desc *tdesc_powerpc_32l;
/* Defined in auto-generated file powerpc-altivec32l.c. */
void init_registers_powerpc_altivec32l (void);
extern const struct target_desc *tdesc_powerpc_altivec32l;
/* Defined in auto-generated file powerpc-cell32l.c. */
void init_registers_powerpc_cell32l (void);
extern const struct target_desc *tdesc_powerpc_cell32l;
/* Defined in auto-generated file powerpc-vsx32l.c. */
void init_registers_powerpc_vsx32l (void);
extern const struct target_desc *tdesc_powerpc_vsx32l;
/* Defined in auto-generated file powerpc-isa205-32l.c. */
void init_registers_powerpc_isa205_32l (void);
extern const struct target_desc *tdesc_powerpc_isa205_32l;
/* Defined in auto-generated file powerpc-isa205-altivec32l.c. */
void init_registers_powerpc_isa205_altivec32l (void);
extern const struct target_desc *tdesc_powerpc_isa205_altivec32l;
/* Defined in auto-generated file powerpc-isa205-vsx32l.c. */
void init_registers_powerpc_isa205_vsx32l (void);
extern const struct target_desc *tdesc_powerpc_isa205_vsx32l;
/* Defined in auto-generated file powerpc-e500l.c. */
void init_registers_powerpc_e500l (void);
extern const struct target_desc *tdesc_powerpc_e500l;
/* Defined in auto-generated file powerpc-64l.c. */
void init_registers_powerpc_64l (void);
extern const struct target_desc *tdesc_powerpc_64l;
/* Defined in auto-generated file powerpc-altivec64l.c. */
void init_registers_powerpc_altivec64l (void);
extern const struct target_desc *tdesc_powerpc_altivec64l;
/* Defined in auto-generated file powerpc-cell64l.c. */
void init_registers_powerpc_cell64l (void);
extern const struct target_desc *tdesc_powerpc_cell64l;
/* Defined in auto-generated file powerpc-vsx64l.c. */
void init_registers_powerpc_vsx64l (void);
extern const struct target_desc *tdesc_powerpc_vsx64l;
/* Defined in auto-generated file powerpc-isa205-64l.c. */
void init_registers_powerpc_isa205_64l (void);
extern const struct target_desc *tdesc_powerpc_isa205_64l;
/* Defined in auto-generated file powerpc-isa205-altivec64l.c. */
void init_registers_powerpc_isa205_altivec64l (void);
extern const struct target_desc *tdesc_powerpc_isa205_altivec64l;
/* Defined in auto-generated file powerpc-isa205-vsx64l.c. */
void init_registers_powerpc_isa205_vsx64l (void);
extern const struct target_desc *tdesc_powerpc_isa205_vsx64l;
#define ppc_num_regs 73
/* This sometimes isn't defined. */
#ifndef PT_ORIG_R3
#define PT_ORIG_R3 34
#endif
#ifndef PT_TRAP
#define PT_TRAP 40
#endif
#ifdef __powerpc64__
/* We use a constant for FPSCR instead of PT_FPSCR, because
many shipped PPC64 kernels had the wrong value in ptrace.h. */
static int ppc_regmap[] =
{PT_R0 * 8, PT_R1 * 8, PT_R2 * 8, PT_R3 * 8,
PT_R4 * 8, PT_R5 * 8, PT_R6 * 8, PT_R7 * 8,
PT_R8 * 8, PT_R9 * 8, PT_R10 * 8, PT_R11 * 8,
PT_R12 * 8, PT_R13 * 8, PT_R14 * 8, PT_R15 * 8,
PT_R16 * 8, PT_R17 * 8, PT_R18 * 8, PT_R19 * 8,
PT_R20 * 8, PT_R21 * 8, PT_R22 * 8, PT_R23 * 8,
PT_R24 * 8, PT_R25 * 8, PT_R26 * 8, PT_R27 * 8,
PT_R28 * 8, PT_R29 * 8, PT_R30 * 8, PT_R31 * 8,
PT_FPR0*8, PT_FPR0*8 + 8, PT_FPR0*8+16, PT_FPR0*8+24,
PT_FPR0*8+32, PT_FPR0*8+40, PT_FPR0*8+48, PT_FPR0*8+56,
PT_FPR0*8+64, PT_FPR0*8+72, PT_FPR0*8+80, PT_FPR0*8+88,
PT_FPR0*8+96, PT_FPR0*8+104, PT_FPR0*8+112, PT_FPR0*8+120,
PT_FPR0*8+128, PT_FPR0*8+136, PT_FPR0*8+144, PT_FPR0*8+152,
PT_FPR0*8+160, PT_FPR0*8+168, PT_FPR0*8+176, PT_FPR0*8+184,
PT_FPR0*8+192, PT_FPR0*8+200, PT_FPR0*8+208, PT_FPR0*8+216,
PT_FPR0*8+224, PT_FPR0*8+232, PT_FPR0*8+240, PT_FPR0*8+248,
PT_NIP * 8, PT_MSR * 8, PT_CCR * 8, PT_LNK * 8,
PT_CTR * 8, PT_XER * 8, PT_FPR0*8 + 256,
PT_ORIG_R3 * 8, PT_TRAP * 8 };
#else
/* Currently, don't check/send MQ. */
static int ppc_regmap[] =
{PT_R0 * 4, PT_R1 * 4, PT_R2 * 4, PT_R3 * 4,
PT_R4 * 4, PT_R5 * 4, PT_R6 * 4, PT_R7 * 4,
PT_R8 * 4, PT_R9 * 4, PT_R10 * 4, PT_R11 * 4,
PT_R12 * 4, PT_R13 * 4, PT_R14 * 4, PT_R15 * 4,
PT_R16 * 4, PT_R17 * 4, PT_R18 * 4, PT_R19 * 4,
PT_R20 * 4, PT_R21 * 4, PT_R22 * 4, PT_R23 * 4,
PT_R24 * 4, PT_R25 * 4, PT_R26 * 4, PT_R27 * 4,
PT_R28 * 4, PT_R29 * 4, PT_R30 * 4, PT_R31 * 4,
PT_FPR0*4, PT_FPR0*4 + 8, PT_FPR0*4+16, PT_FPR0*4+24,
PT_FPR0*4+32, PT_FPR0*4+40, PT_FPR0*4+48, PT_FPR0*4+56,
PT_FPR0*4+64, PT_FPR0*4+72, PT_FPR0*4+80, PT_FPR0*4+88,
PT_FPR0*4+96, PT_FPR0*4+104, PT_FPR0*4+112, PT_FPR0*4+120,
PT_FPR0*4+128, PT_FPR0*4+136, PT_FPR0*4+144, PT_FPR0*4+152,
PT_FPR0*4+160, PT_FPR0*4+168, PT_FPR0*4+176, PT_FPR0*4+184,
PT_FPR0*4+192, PT_FPR0*4+200, PT_FPR0*4+208, PT_FPR0*4+216,
PT_FPR0*4+224, PT_FPR0*4+232, PT_FPR0*4+240, PT_FPR0*4+248,
PT_NIP * 4, PT_MSR * 4, PT_CCR * 4, PT_LNK * 4,
PT_CTR * 4, PT_XER * 4, PT_FPSCR * 4,
PT_ORIG_R3 * 4, PT_TRAP * 4
};
static int ppc_regmap_e500[] =
{PT_R0 * 4, PT_R1 * 4, PT_R2 * 4, PT_R3 * 4,
PT_R4 * 4, PT_R5 * 4, PT_R6 * 4, PT_R7 * 4,
PT_R8 * 4, PT_R9 * 4, PT_R10 * 4, PT_R11 * 4,
PT_R12 * 4, PT_R13 * 4, PT_R14 * 4, PT_R15 * 4,
PT_R16 * 4, PT_R17 * 4, PT_R18 * 4, PT_R19 * 4,
PT_R20 * 4, PT_R21 * 4, PT_R22 * 4, PT_R23 * 4,
PT_R24 * 4, PT_R25 * 4, PT_R26 * 4, PT_R27 * 4,
PT_R28 * 4, PT_R29 * 4, PT_R30 * 4, PT_R31 * 4,
-1, -1, -1, -1,
-1, -1, -1, -1,
-1, -1, -1, -1,
-1, -1, -1, -1,
-1, -1, -1, -1,
-1, -1, -1, -1,
-1, -1, -1, -1,
-1, -1, -1, -1,
PT_NIP * 4, PT_MSR * 4, PT_CCR * 4, PT_LNK * 4,
PT_CTR * 4, PT_XER * 4, -1,
PT_ORIG_R3 * 4, PT_TRAP * 4
};
#endif
static int
ppc_cannot_store_register (int regno)
{
const struct target_desc *tdesc = current_process ()->tdesc;
#ifndef __powerpc64__
/* Some kernels do not allow us to store fpscr. */
if (!(ppc_hwcap & PPC_FEATURE_HAS_SPE)
&& regno == find_regno (tdesc, "fpscr"))
return 2;
#endif
/* Some kernels do not allow us to store orig_r3 or trap. */
if (regno == find_regno (tdesc, "orig_r3")
|| regno == find_regno (tdesc, "trap"))
return 2;
return 0;
}
static int
ppc_cannot_fetch_register (int regno)
{
return 0;
}
static void
ppc_collect_ptrace_register (struct regcache *regcache, int regno, char *buf)
{
int size = register_size (regcache->tdesc, regno);
memset (buf, 0, sizeof (long));
if (size < sizeof (long))
collect_register (regcache, regno, buf + sizeof (long) - size);
else
collect_register (regcache, regno, buf);
}
static void
ppc_supply_ptrace_register (struct regcache *regcache,
int regno, const char *buf)
{
int size = register_size (regcache->tdesc, regno);
if (size < sizeof (long))
supply_register (regcache, regno, buf + sizeof (long) - size);
else
supply_register (regcache, regno, buf);
}
#define INSTR_SC 0x44000002
#define NR_spu_run 0x0116
/* If the PPU thread is currently stopped on a spu_run system call,
return to FD and ADDR the file handle and NPC parameter address
used with the system call. Return non-zero if successful. */
static int
parse_spufs_run (struct regcache *regcache, int *fd, CORE_ADDR *addr)
{
CORE_ADDR curr_pc;
int curr_insn;
int curr_r0;
if (register_size (regcache->tdesc, 0) == 4)
{
unsigned int pc, r0, r3, r4;
collect_register_by_name (regcache, "pc", &pc);
collect_register_by_name (regcache, "r0", &r0);
collect_register_by_name (regcache, "orig_r3", &r3);
collect_register_by_name (regcache, "r4", &r4);
curr_pc = (CORE_ADDR) pc;
curr_r0 = (int) r0;
*fd = (int) r3;
*addr = (CORE_ADDR) r4;
}
else
{
unsigned long pc, r0, r3, r4;
collect_register_by_name (regcache, "pc", &pc);
collect_register_by_name (regcache, "r0", &r0);
collect_register_by_name (regcache, "orig_r3", &r3);
collect_register_by_name (regcache, "r4", &r4);
curr_pc = (CORE_ADDR) pc;
curr_r0 = (int) r0;
*fd = (int) r3;
*addr = (CORE_ADDR) r4;
}
/* Fetch instruction preceding current NIP. */
if ((*the_target->read_memory) (curr_pc - 4,
(unsigned char *) &curr_insn, 4) != 0)
return 0;
/* It should be a "sc" instruction. */
if (curr_insn != INSTR_SC)
return 0;
/* System call number should be NR_spu_run. */
if (curr_r0 != NR_spu_run)
return 0;
return 1;
}
static CORE_ADDR
ppc_get_pc (struct regcache *regcache)
{
CORE_ADDR addr;
int fd;
if (parse_spufs_run (regcache, &fd, &addr))
{
unsigned int pc;
(*the_target->read_memory) (addr, (unsigned char *) &pc, 4);
return ((CORE_ADDR)1 << 63)
| ((CORE_ADDR)fd << 32) | (CORE_ADDR) (pc - 4);
}
else if (register_size (regcache->tdesc, 0) == 4)
{
unsigned int pc;
collect_register_by_name (regcache, "pc", &pc);
return (CORE_ADDR) pc;
}
else
{
unsigned long pc;
collect_register_by_name (regcache, "pc", &pc);
return (CORE_ADDR) pc;
}
}
static void
ppc_set_pc (struct regcache *regcache, CORE_ADDR pc)
{
CORE_ADDR addr;
int fd;
if (parse_spufs_run (regcache, &fd, &addr))
{
unsigned int newpc = pc;
(*the_target->write_memory) (addr, (unsigned char *) &newpc, 4);
}
else if (register_size (regcache->tdesc, 0) == 4)
{
unsigned int newpc = pc;
supply_register_by_name (regcache, "pc", &newpc);
}
else
{
unsigned long newpc = pc;
supply_register_by_name (regcache, "pc", &newpc);
}
}
static int
ppc_get_hwcap (unsigned long *valp)
{
const struct target_desc *tdesc = current_process ()->tdesc;
int wordsize = register_size (tdesc, 0);
unsigned char *data = alloca (2 * wordsize);
int offset = 0;
while ((*the_target->read_auxv) (offset, data, 2 * wordsize) == 2 * wordsize)
{
if (wordsize == 4)
{
unsigned int *data_p = (unsigned int *)data;
if (data_p[0] == AT_HWCAP)
{
*valp = data_p[1];
return 1;
}
}
else
{
unsigned long *data_p = (unsigned long *)data;
if (data_p[0] == AT_HWCAP)
{
*valp = data_p[1];
return 1;
}
}
offset += 2 * wordsize;
}
*valp = 0;
return 0;
}
/* Forward declaration. */
static struct usrregs_info ppc_usrregs_info;
#ifndef __powerpc64__
static int ppc_regmap_adjusted;
#endif
static void
ppc_arch_setup (void)
{
const struct target_desc *tdesc;
#ifdef __powerpc64__
long msr;
struct regcache *regcache;
/* On a 64-bit host, assume 64-bit inferior process with no
AltiVec registers. Reset ppc_hwcap to ensure that the
collect_register call below does not fail. */
tdesc = tdesc_powerpc_64l;
current_process ()->tdesc = tdesc;
ppc_hwcap = 0;
/* Only if the high bit of the MSR is set, we actually have
a 64-bit inferior. */
regcache = new_register_cache (tdesc);
fetch_inferior_registers (regcache, find_regno (tdesc, "msr"));
collect_register_by_name (regcache, "msr", &msr);
free_register_cache (regcache);
if (msr < 0)
{
ppc_get_hwcap (&ppc_hwcap);
if (ppc_hwcap & PPC_FEATURE_CELL)
tdesc = tdesc_powerpc_cell64l;
else if (ppc_hwcap & PPC_FEATURE_HAS_VSX)
{
/* Power ISA 2.05 (implemented by Power 6 and newer processors)
increases the FPSCR from 32 bits to 64 bits. Even though Power 7
supports this ISA version, it doesn't have PPC_FEATURE_ARCH_2_05
set, only PPC_FEATURE_ARCH_2_06. Since for now the only bits
used in the higher half of the register are for Decimal Floating
Point, we check if that feature is available to decide the size
of the FPSCR. */
if (ppc_hwcap & PPC_FEATURE_HAS_DFP)
tdesc = tdesc_powerpc_isa205_vsx64l;
else
tdesc = tdesc_powerpc_vsx64l;
}
else if (ppc_hwcap & PPC_FEATURE_HAS_ALTIVEC)
{
if (ppc_hwcap & PPC_FEATURE_HAS_DFP)
tdesc = tdesc_powerpc_isa205_altivec64l;
else
tdesc = tdesc_powerpc_altivec64l;
}
current_process ()->tdesc = tdesc;
return;
}
#endif
/* OK, we have a 32-bit inferior. */
tdesc = tdesc_powerpc_32l;
current_process ()->tdesc = tdesc;
ppc_get_hwcap (&ppc_hwcap);
if (ppc_hwcap & PPC_FEATURE_CELL)
tdesc = tdesc_powerpc_cell32l;
else if (ppc_hwcap & PPC_FEATURE_HAS_VSX)
{
if (ppc_hwcap & PPC_FEATURE_HAS_DFP)
tdesc = tdesc_powerpc_isa205_vsx32l;
else
tdesc = tdesc_powerpc_vsx32l;
}
else if (ppc_hwcap & PPC_FEATURE_HAS_ALTIVEC)
{
if (ppc_hwcap & PPC_FEATURE_HAS_DFP)
tdesc = tdesc_powerpc_isa205_altivec32l;
else
tdesc = tdesc_powerpc_altivec32l;
}
/* On 32-bit machines, check for SPE registers.
Set the low target's regmap field as appropriately. */
#ifndef __powerpc64__
if (ppc_hwcap & PPC_FEATURE_HAS_SPE)
tdesc = tdesc_powerpc_e500l;
if (!ppc_regmap_adjusted)
{
if (ppc_hwcap & PPC_FEATURE_HAS_SPE)
ppc_usrregs_info.regmap = ppc_regmap_e500;
/* If the FPSCR is 64-bit wide, we need to fetch the whole
64-bit slot and not just its second word. The PT_FPSCR
supplied in a 32-bit GDB compilation doesn't reflect
this. */
if (register_size (tdesc, 70) == 8)
ppc_regmap[70] = (48 + 2*32) * sizeof (long);
ppc_regmap_adjusted = 1;
}
#endif
current_process ()->tdesc = tdesc;
}
/* Correct in either endianness.
This instruction is "twge r2, r2", which GDB uses as a software
breakpoint. */
static const unsigned int ppc_breakpoint = 0x7d821008;
#define ppc_breakpoint_len 4
static int
ppc_breakpoint_at (CORE_ADDR where)
{
unsigned int insn;
if (where & ((CORE_ADDR)1 << 63))
{
char mem_annex[32];
sprintf (mem_annex, "%d/mem", (int)((where >> 32) & 0x7fffffff));
(*the_target->qxfer_spu) (mem_annex, (unsigned char *) &insn,
NULL, where & 0xffffffff, 4);
if (insn == 0x3fff)
return 1;
}
else
{
(*the_target->read_memory) (where, (unsigned char *) &insn, 4);
if (insn == ppc_breakpoint)
return 1;
/* If necessary, recognize more trap instructions here. GDB only uses
the one. */
}
return 0;
}
/* Provide only a fill function for the general register set. ps_lgetregs
will use this for NPTL support. */
static void ppc_fill_gregset (struct regcache *regcache, void *buf)
{
int i;
for (i = 0; i < 32; i++)
ppc_collect_ptrace_register (regcache, i, (char *) buf + ppc_regmap[i]);
for (i = 64; i < 70; i++)
ppc_collect_ptrace_register (regcache, i, (char *) buf + ppc_regmap[i]);
for (i = 71; i < 73; i++)
ppc_collect_ptrace_register (regcache, i, (char *) buf + ppc_regmap[i]);
}
#ifndef PTRACE_GETVSXREGS
#define PTRACE_GETVSXREGS 27
#define PTRACE_SETVSXREGS 28
#endif
#define SIZEOF_VSXREGS 32*8
static void
ppc_fill_vsxregset (struct regcache *regcache, void *buf)
{
int i, base;
char *regset = buf;
if (!(ppc_hwcap & PPC_FEATURE_HAS_VSX))
return;
base = find_regno (regcache->tdesc, "vs0h");
for (i = 0; i < 32; i++)
collect_register (regcache, base + i, &regset[i * 8]);
}
static void
ppc_store_vsxregset (struct regcache *regcache, const void *buf)
{
int i, base;
const char *regset = buf;
if (!(ppc_hwcap & PPC_FEATURE_HAS_VSX))
return;
base = find_regno (regcache->tdesc, "vs0h");
for (i = 0; i < 32; i++)
supply_register (regcache, base + i, &regset[i * 8]);
}
#ifndef PTRACE_GETVRREGS
#define PTRACE_GETVRREGS 18
#define PTRACE_SETVRREGS 19
#endif
#define SIZEOF_VRREGS 33*16+4
static void
ppc_fill_vrregset (struct regcache *regcache, void *buf)
{
int i, base;
char *regset = buf;
if (!(ppc_hwcap & PPC_FEATURE_HAS_ALTIVEC))
return;
base = find_regno (regcache->tdesc, "vr0");
for (i = 0; i < 32; i++)
collect_register (regcache, base + i, &regset[i * 16]);
collect_register_by_name (regcache, "vscr", &regset[32 * 16 + 12]);
collect_register_by_name (regcache, "vrsave", &regset[33 * 16]);
}
static void
ppc_store_vrregset (struct regcache *regcache, const void *buf)
{
int i, base;
const char *regset = buf;
if (!(ppc_hwcap & PPC_FEATURE_HAS_ALTIVEC))
return;
base = find_regno (regcache->tdesc, "vr0");
for (i = 0; i < 32; i++)
supply_register (regcache, base + i, &regset[i * 16]);
supply_register_by_name (regcache, "vscr", &regset[32 * 16 + 12]);
supply_register_by_name (regcache, "vrsave", &regset[33 * 16]);
}
#ifndef PTRACE_GETEVRREGS
#define PTRACE_GETEVRREGS 20
#define PTRACE_SETEVRREGS 21
#endif
struct gdb_evrregset_t
{
unsigned long evr[32];
unsigned long long acc;
unsigned long spefscr;
};
static void
ppc_fill_evrregset (struct regcache *regcache, void *buf)
{
int i, ev0;
struct gdb_evrregset_t *regset = buf;
if (!(ppc_hwcap & PPC_FEATURE_HAS_SPE))
return;
ev0 = find_regno (regcache->tdesc, "ev0h");
for (i = 0; i < 32; i++)
collect_register (regcache, ev0 + i, &regset->evr[i]);
collect_register_by_name (regcache, "acc", &regset->acc);
collect_register_by_name (regcache, "spefscr", &regset->spefscr);
}
static void
ppc_store_evrregset (struct regcache *regcache, const void *buf)
{
int i, ev0;
const struct gdb_evrregset_t *regset = buf;
if (!(ppc_hwcap & PPC_FEATURE_HAS_SPE))
return;
ev0 = find_regno (regcache->tdesc, "ev0h");
for (i = 0; i < 32; i++)
supply_register (regcache, ev0 + i, &regset->evr[i]);
supply_register_by_name (regcache, "acc", &regset->acc);
supply_register_by_name (regcache, "spefscr", &regset->spefscr);
}
static struct regset_info ppc_regsets[] = {
/* List the extra register sets before GENERAL_REGS. That way we will
fetch them every time, but still fall back to PTRACE_PEEKUSER for the
general registers. Some kernels support these, but not the newer
PPC_PTRACE_GETREGS. */
{ PTRACE_GETVSXREGS, PTRACE_SETVSXREGS, 0, SIZEOF_VSXREGS, EXTENDED_REGS,
ppc_fill_vsxregset, ppc_store_vsxregset },
{ PTRACE_GETVRREGS, PTRACE_SETVRREGS, 0, SIZEOF_VRREGS, EXTENDED_REGS,
ppc_fill_vrregset, ppc_store_vrregset },
{ PTRACE_GETEVRREGS, PTRACE_SETEVRREGS, 0, 32 * 4 + 8 + 4, EXTENDED_REGS,
ppc_fill_evrregset, ppc_store_evrregset },
{ 0, 0, 0, 0, GENERAL_REGS, ppc_fill_gregset, NULL },
{ 0, 0, 0, -1, -1, NULL, NULL }
};
static struct usrregs_info ppc_usrregs_info =
{
ppc_num_regs,
ppc_regmap,
};
static struct regsets_info ppc_regsets_info =
{
ppc_regsets, /* regsets */
0, /* num_regsets */
NULL, /* disabled_regsets */
};
static struct regs_info regs_info =
{
NULL, /* regset_bitmap */
&ppc_usrregs_info,
&ppc_regsets_info
};
static const struct regs_info *
ppc_regs_info (void)
{
return &regs_info;
}
struct linux_target_ops the_low_target = {
ppc_arch_setup,
ppc_regs_info,
ppc_cannot_fetch_register,
ppc_cannot_store_register,
NULL, /* fetch_register */
ppc_get_pc,
ppc_set_pc,
(const unsigned char *) &ppc_breakpoint,
ppc_breakpoint_len,
NULL,
0,
ppc_breakpoint_at,
NULL,
NULL,
NULL,
NULL,
ppc_collect_ptrace_register,
ppc_supply_ptrace_register,
};
void
initialize_low_arch (void)
{
/* Initialize the Linux target descriptions. */
init_registers_powerpc_32l ();
init_registers_powerpc_altivec32l ();
init_registers_powerpc_cell32l ();
init_registers_powerpc_vsx32l ();
init_registers_powerpc_isa205_32l ();
init_registers_powerpc_isa205_altivec32l ();
init_registers_powerpc_isa205_vsx32l ();
init_registers_powerpc_e500l ();
init_registers_powerpc_64l ();
init_registers_powerpc_altivec64l ();
init_registers_powerpc_cell64l ();
init_registers_powerpc_vsx64l ();
init_registers_powerpc_isa205_64l ();
init_registers_powerpc_isa205_altivec64l ();
init_registers_powerpc_isa205_vsx64l ();
initialize_regsets_info (&ppc_regsets_info);
}
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