Remove Cell Broadband Engine debugging support

This patch implements removal of Cell/B.E. support, including
- Support for the spu-*-* target
- Support for native stand-alone SPU debugging
- Support for integrated debugging of combined PPU/SPU applications
- Remote debugging (gdbserver) support for all the above.

The patch also removes the TARGET_OBJECT_SPU target object type,
as this is available only on Cell/B.E. targets, including
- Native Linux support
- Core file support (including core file generation)
- Remote target support, including removal of the qXfer:spu:read
  and qXfer:spu:write remote protocal packets and associated
  support in gdbserver.

gdb/ChangeLog
2019-09-20  Ulrich Weigand  <uweigand@de.ibm.com>

	* NEWS: Mention that Cell/B.E. debugging support was removed.
	* MAINTAINERS: Remove spu target.

	* config/djgpp/fnchange.lst: Remove entries for removed files.

	* Makefile.in (ALL_TARGET_OBS): Remove solib-spu.o,
	spu-multiarch.o, and spu-tdep.o.
	(HFILES_NO_SRCDIR): Remove solib-spu.h and spu-tdep.h.
	(ALLDEPFILES): Remove solib-spu.c, spu-linux-nat.c,
	spu-multiarch.c, and spu-tdep.c.
	* spu-linux-nat.c: Remove file.
	* spu-multiarch.c: Remove file.
	* spu-tdep.c: Remove file.
	* spu-tdep.h: Remove file.
	* solib-spu.c: Remove file.
	* solib-spu.h: Remove file.

	* configure.host (powerpc64*-*-linux*): Remove Cell/B.E. support.
	* configure.nat (spu-linux): Remove.
	* configure.tgt (powerpc*-*-linux*): Remove solib-spu.o and
	solib-multiarch.o from gdb_target_obs.
	(spu*-*-*): Remove.

	* arch/ppc-linux-common.h (struct ppc_linux_features): Remove "cell"
	feature flag.
	(ppc_linux_no_features): Update.
	* arch/ppc-linux-common.c (ppc_linux_match_description): Remove
	Cell/B.E. support.
	* arch/ppc-linux-tdesc.h (tdesc_powerpc_cell32l): Remove declaration.
	(tdesc_powerpc_cell64l): Likewise.
	* nat/ppc-linux.h (PPC_FEATURE_CELL): Remove.
	* ppc-linux-nat.c (ppc_linux_nat_target::read_description): Remove
	Cell/B.E. support.
	* ppc-linux-tdep.h: Do not include "solib-spu.h" or "spu-tdep.h".
	Do not include "features/rs6000/powerpc-cell32l.c" or
	"features/rs6000/powerpc-cell64l.c".
	(ppc_linux_spu_section): Remove.
	(ppc_linux_core_read_description): Remove Cell/B.E. support.
	(spe_context_objfile, spe_context_lm_addr, spe_context_offset,
	spe_context_cache_ptid, spe_context_cache_ptid): Remove.
	(ppc_linux_spe_context_lookup): Remove.
	(ppc_linux_spe_context_inferior_created): Remove.
	(ppc_linux_spe_context_solib_loaded): Remove.
	(ppc_linux_spe_context_solib_unloaded): Remove.
	(ppc_linux_spe_context): Remove.
	(struct ppu2spu_cache): Remove.
	(ppu2spu_prev_arch, ppu2spu_this_id, ppu2spu_prev_register): Remove.
	(struct ppu2spu_data): Remove.
	(ppu2spu_unwind_register, ppu2spu_sniffer, ppu2spu_dealloc_cache,
	ppu2spu_unwind): Remove.
	(ppc_linux_init_abi): Remove Cell/B.E. support.
	* rs6000-tdep.h (rs6000_gdbarch_init): Remove Cell/B.E. support.

	* features/Makefile (rs6000/powerpc-cell32l-expedite): Remove.
	(rs6000/powerpc-cell64l-expedite): Likewise
	(WHICH): Remove rs6000/powerpc-cell32l and rs6000/powerpc-cell64l.
	(XMLTOC): Remove rs6000/powerpc-cell32l.xml and
	rs6000/powerpc-cell64l.xml.
	* features/rs6000/powerpc-cell32l.xml: Remove.
	* features/rs6000/powerpc-cell64l.xml: Likewise.
	* features/rs6000/powerpc-cell32l.c: Remove generated file.
	* features/rs6000/powerpc-cell64l.c: Likewise.
	* regformats/rs6000/powerpc-cell32l.dat: Remove generated file.
	* regformats/rs6000/powerpc-cell64l.dat: Likewise.
	* regformats/reg-spu.dat: Remove.

	* target.h (enum target_object): Remove TARGET_OBJECT_SPU.
	* corelow.c (struct spuid_list): Remove.
	(add_to_spuid_list): Remove.
	(core_target::xfer_partial): Remove support for TARGET_OBJECT_SPU.
	* remote.c (PACKET_qXfer_spu_read, PACKET_qXfer_spu_write): Remove.
	(remote_protocol_features): Remove associated entries.
	(_initialize_remote): No longer initialize them.
	(remote_target::xfer_partial): Remove support for TARGET_OBJECT_SPU.
	* linux-nat.c (SPUFS_MAGIC): Remove.
	(linux_proc_xfer_spu): Remove.
	(spu_enumerate_spu_ids): Remove.
	(linux_nat_target::xfer_partial): Remove support for TARGET_OBJECT_SPU.
	* linux-tdep.c (-linux_spu_make_corefile_notes): Remove.
	(linux_make_corefile_notes): No longer call it.

	* regcache.c (cooked_read_test): Remove bfd_arch_spu special case.
	(cooked_write_test): Likewise.

gdb/doc/ChangeLog
2019-09-20  Ulrich Weigand  <uweigand@de.ibm.com>

	* doc/gdb.texinfo (Remote Configuration): Remove documentation for
	qXfer:spu:read and qXfer:spu:write.
	(General Query Packets): Likewise.
	(Cell Broadband Engine SPU architecture): Remove subsection.

gdb/gdbserver/ChangeLog
2019-09-20  Ulrich Weigand  <uweigand@de.ibm.com>

	* configure.srv (ipa_ppc_linux_regobj): Remove powerpc-cell32l-ipa.o
	and powerpc-cell64l-ipa.o.
	(powerpc*-*-linux*): Remove powerpc-cell32l.o and powerpc-cell64l.o
	from srv_regobj.  Remove rs6000/powerpc-cell32l.xml and
	rs6000/powerpc-cell64l.xml from srv_xmlfiles.
	(spu*-*-*): Remove.

	* spu-low.c: Remove file.

	* linux-ppc-low.c (INSTR_SC, NR_spu_run): Remove.
	(parse_spufs_run): Remove.
	(ppc_get_pc): Remove Cell/B.E. support.
	(ppc_set_pc): Likewise.
	(ppc_breakpoint_at): Likewise.
	(ppc_arch_setup): Likewise.
	(ppc_get_ipa_tdesc_idx): Do not handle tdesc_powerpc_cell64l or
	tdesc_powerpc_cell32l.
	(initialize_low_arch): Do not call init_registers_powerpc_cell64l
	or init_registers_powerpc_cell32l.
	* linux-ppc-ipa.c (get_ipa_tdesc): Do not handle PPC_TDESC_CELL.
	(initialize_low_tracepoint): Do not call init_registers_powerpc_cell64l
	or init_registers_powerpc_cell32l.
	* linux-ppc-tdesc-init.h (PPC_TDESC_CELL): Mark as unused.
	(init_registers_powerpc_cell32l): Remove prototype.
	(init_registers_powerpc_cell64l): Likewise.

	* target.h (struct target_ops): Remove qxfer_spu member.
	* server.c (handle_qxfer_spu): Remove.
	(qxfer_packets): Remove entry for "spu".
	(handle_query): No longer support qXfer:spu:read or qXfer:spu:write.
	* linux-low.c (SPUFS_MAGIC): Remove.
	(spu_enumerate_spu_ids): Remove.
	(linux_qxfer_spu): Remove.
	(linux_target_ops): Remove qxfer_spu member.
	* lynx-low.c (lynx_target_ops): Remove qxfer_spu member.
	* nto-low.c (nto_target_ops): Remove qxfer_spu member.
	* win32-low.c (win32_target_ops): Remove qxfer_spu member.

gdb/testsuite/ChangeLog
2019-09-20  Ulrich Weigand  <uweigand@de.ibm.com>

	* gdb.arch/spu-info.exp: Remove file.
	* gdb.arch/spu-info.c: Remove file.
	* gdb.arch/spu-ls.exp: Remove file.
	* gdb.arch/spu-ls.c: Remove file.

	* gdb.asm/asm-source.exp: Remove support for spu*-*-*.
	* gdb.asm/spu.inc: Remove file.

	* gdb.base/dump.exp: Remove support for spu*-*-*.
	* gdb.base/stack-checking.exp: Likewise.
	* gdb.base/overlays.exp: Likewise.
	* gdb.base/ovlymgr.c: Likewise.
	* gdb.base/spu.ld: Remove file.

	* gdb.cp/bs15503.exp: Remove support for spu*-*-*.
	* gdb.cp/cpexprs.exp: Likewise.
	* gdb.cp/exception.exp: Likewise.
	* gdb.cp/gdb2495.exp: Likewise.
	* gdb.cp/mb-templates.exp: Likewise.
	* gdb.cp/pr9167.exp: Likewise.
	* gdb.cp/userdef.exp: Likewise.

	* gdb.xml/tdesc-regs.exp: Remove support for spu*-*-*.

	* gdb.cell: Remove directory.
	* lib/cell.exp: Remove file.

1 files changed, 0 insertions, 117 deletions

diff --git a/gdb/spu-tdep.h b/gdb/spu-tdep.h
deleted file mode 100644
index 255be2ed5ac..00000000000
--- a/gdb/spu-tdep.h
+++ /dev/null
@@ -1,117 +0,0 @@
-/* SPU target-dependent code for GDB, the GNU debugger.
-   Copyright (C) 2006-2019 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/>.  */
-
-#ifndef SPU_TDEP_H
-#define SPU_TDEP_H
-
-/* Number of registers.  */
-#define SPU_NUM_REGS         130
-#define SPU_NUM_PSEUDO_REGS  6
-#define SPU_NUM_GPRS	     128
-
-/* Register numbers of various important registers.  */
-enum spu_regnum
-{
-  /* SPU calling convention.  */
-  SPU_LR_REGNUM = 0,		/* Link register.  */
-  SPU_RAW_SP_REGNUM = 1,	/* Stack pointer (full register).  */
-  SPU_ARG1_REGNUM = 3,		/* First argument register.  */
-  SPU_ARGN_REGNUM = 74,		/* Last argument register.  */
-  SPU_SAVED1_REGNUM = 80,	/* First call-saved register.  */
-  SPU_SAVEDN_REGNUM = 127,	/* Last call-saved register.  */
-  SPU_FP_REGNUM = 127,		/* Frame pointer.  */
-
-  /* Special registers.  */
-  SPU_ID_REGNUM = 128,		/* SPU ID register.  */
-  SPU_PC_REGNUM = 129,		/* Next program counter.  */
-  SPU_SP_REGNUM = 130,		/* Stack pointer (preferred slot).  */
-  SPU_FPSCR_REGNUM = 131,	/* Floating point status/control register.  */
-  SPU_SRR0_REGNUM = 132,	/* SRR0 register.  */
-  SPU_LSLR_REGNUM = 133,	/* Local store limit register.  */
-  SPU_DECR_REGNUM = 134,	/* Decrementer value.  */
-  SPU_DECR_STATUS_REGNUM = 135	/* Decrementer status.  */
-};
-
-/* Address conversions.
-
-   In a combined PPU/SPU debugging session, we have to consider multiple
-   address spaces: the PPU 32- or 64-bit address space, and the 32-bit
-   local store address space for each SPU context.  As it is currently
-   not yet possible to use the program_space / address_space mechanism
-   to represent this, we encode all those addresses into one single
-   64-bit address for the whole process.  For SPU programs using overlays,
-   this address space must also include separate ranges reserved for the
-   LMA of overlay sections.
-
-
-   The following combinations are supported for combined debugging:
-
-   PPU address (this relies on the fact that PPC 64-bit user space
-   addresses can never have the highest-most bit set):
-
-      +-+---------------------------------+
-      |0|              ADDR [63]          |
-      +-+---------------------------------+
-
-   SPU address for SPU context with id SPU (this assumes that SPU
-   IDs, which are file descriptors, are never larger than 2^30):
-
-      +-+-+--------------+----------------+
-      |1|0|    SPU [30]  |    ADDR [32]   |
-      +-+-+--------------+----------------+
-
-   SPU overlay section LMA for SPU context with id SPU:
-
-      +-+-+--------------+----------------+
-      |1|1|    SPU [30]  |    ADDR [32]   |
-      +-+-+--------------+----------------+
-
-
-   In SPU stand-alone debugging mode (using spu-linux-nat.c),
-   the following combinations are supported:
-
-   SPU address:
-
-      +-+-+--------------+----------------+
-      |0|0|     0        |    ADDR [32]   |
-      +-+-+--------------+----------------+
-
-   SPU overlay section LMA:
-
-      +-+-+--------------+----------------+
-      |0|1|     0        |    ADDR [32]   |
-      +-+-+--------------+----------------+
-
-
-   The following macros allow manipulation of addresses in the
-   above formats.  */
-
-#define SPUADDR(spu, addr) \
-  ((spu) != -1? (ULONGEST)1 << 63 | (ULONGEST)(spu) << 32 | (addr) : (addr))
-
-#define SPUADDR_SPU(addr) \
-  (((addr) & (ULONGEST)1 << 63) \
-   ? (int) ((ULONGEST)(addr) >> 32 & 0x3fffffff) \
-   : -1)
-
-#define SPUADDR_ADDR(addr) \
-  (((addr) & (ULONGEST)1 << 63)? (ULONGEST)(addr) & 0xffffffff : (addr))
-
-#define SPU_OVERLAY_LMA ((ULONGEST)1 << 62)
-
-#endif