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.
This commit is contained in:
Ulrich Weigand
parent
78e8cb91cd
commit
abf516c693
108 changed files with 189 additions and 11285 deletions
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@ -31,7 +31,6 @@
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#include "osabi.h"
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#include "regset.h"
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#include "solib-svr4.h"
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#include "solib-spu.h"
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#include "solib.h"
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#include "solist.h"
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#include "ppc-tdep.h"
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@ -48,7 +47,6 @@
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#include "elf/common.h"
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#include "elf/ppc64.h"
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#include "arch-utils.h"
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#include "spu-tdep.h"
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#include "xml-syscall.h"
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#include "linux-tdep.h"
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#include "linux-record.h"
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@ -66,7 +64,6 @@
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#include "features/rs6000/powerpc-32l.c"
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#include "features/rs6000/powerpc-altivec32l.c"
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#include "features/rs6000/powerpc-cell32l.c"
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#include "features/rs6000/powerpc-vsx32l.c"
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#include "features/rs6000/powerpc-isa205-32l.c"
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#include "features/rs6000/powerpc-isa205-altivec32l.c"
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@ -76,7 +73,6 @@
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#include "features/rs6000/powerpc-isa207-htm-vsx32l.c"
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#include "features/rs6000/powerpc-64l.c"
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#include "features/rs6000/powerpc-altivec64l.c"
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#include "features/rs6000/powerpc-cell64l.c"
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#include "features/rs6000/powerpc-vsx64l.c"
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#include "features/rs6000/powerpc-isa205-64l.c"
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#include "features/rs6000/powerpc-isa205-altivec64l.c"
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@ -1555,19 +1551,12 @@ ppc_linux_write_pc (struct regcache *regcache, CORE_ADDR pc)
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regcache_cooked_write_unsigned (regcache, PPC_TRAP_REGNUM, -1);
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}
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static int
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ppc_linux_spu_section (bfd *abfd, asection *asect, void *user_data)
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{
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return startswith (bfd_section_name (asect), "SPU/");
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}
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static const struct target_desc *
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ppc_linux_core_read_description (struct gdbarch *gdbarch,
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struct target_ops *target,
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bfd *abfd)
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{
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struct ppc_linux_features features = ppc_linux_no_features;
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asection *cell = bfd_sections_find_if (abfd, ppc_linux_spu_section, NULL);
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asection *altivec = bfd_get_section_by_name (abfd, ".reg-ppc-vmx");
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asection *vsx = bfd_get_section_by_name (abfd, ".reg-ppc-vsx");
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asection *section = bfd_get_section_by_name (abfd, ".reg");
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@ -1592,9 +1581,6 @@ ppc_linux_core_read_description (struct gdbarch *gdbarch,
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return NULL;
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}
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if (cell)
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features.cell = true;
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if (altivec)
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features.altivec = true;
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@ -1743,287 +1729,6 @@ ppc_stap_parse_special_token (struct gdbarch *gdbarch,
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return 1;
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}
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/* Cell/B.E. active SPE context tracking support. */
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static struct objfile *spe_context_objfile = NULL;
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static CORE_ADDR spe_context_lm_addr = 0;
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static CORE_ADDR spe_context_offset = 0;
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static ptid_t spe_context_cache_ptid;
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static CORE_ADDR spe_context_cache_address;
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/* Hook into inferior_created, solib_loaded, and solib_unloaded observers
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to track whether we've loaded a version of libspe2 (as static or dynamic
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library) that provides the __spe_current_active_context variable. */
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static void
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ppc_linux_spe_context_lookup (struct objfile *objfile)
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{
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struct bound_minimal_symbol sym;
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if (!objfile)
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{
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spe_context_objfile = NULL;
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spe_context_lm_addr = 0;
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spe_context_offset = 0;
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spe_context_cache_ptid = minus_one_ptid;
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spe_context_cache_address = 0;
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return;
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}
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sym = lookup_minimal_symbol ("__spe_current_active_context", NULL, objfile);
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if (sym.minsym)
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{
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spe_context_objfile = objfile;
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spe_context_lm_addr = svr4_fetch_objfile_link_map (objfile);
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spe_context_offset = MSYMBOL_VALUE_RAW_ADDRESS (sym.minsym);
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spe_context_cache_ptid = minus_one_ptid;
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spe_context_cache_address = 0;
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return;
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}
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}
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static void
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ppc_linux_spe_context_inferior_created (struct target_ops *t, int from_tty)
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{
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ppc_linux_spe_context_lookup (NULL);
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for (objfile *objfile : current_program_space->objfiles ())
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ppc_linux_spe_context_lookup (objfile);
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}
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static void
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ppc_linux_spe_context_solib_loaded (struct so_list *so)
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{
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if (strstr (so->so_original_name, "/libspe") != NULL)
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{
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solib_read_symbols (so, 0);
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ppc_linux_spe_context_lookup (so->objfile);
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}
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}
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static void
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ppc_linux_spe_context_solib_unloaded (struct so_list *so)
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{
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if (so->objfile == spe_context_objfile)
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ppc_linux_spe_context_lookup (NULL);
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}
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/* Retrieve contents of the N'th element in the current thread's
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linked SPE context list into ID and NPC. Return the address of
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said context element, or 0 if not found. */
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static CORE_ADDR
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ppc_linux_spe_context (int wordsize, enum bfd_endian byte_order,
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int n, int *id, unsigned int *npc)
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{
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CORE_ADDR spe_context = 0;
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gdb_byte buf[16];
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int i;
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/* Quick exit if we have not found __spe_current_active_context. */
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if (!spe_context_objfile)
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return 0;
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/* Look up cached address of thread-local variable. */
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if (spe_context_cache_ptid != inferior_ptid)
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{
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struct target_ops *target = current_top_target ();
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try
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{
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/* We do not call target_translate_tls_address here, because
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svr4_fetch_objfile_link_map may invalidate the frame chain,
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which must not do while inside a frame sniffer.
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Instead, we have cached the lm_addr value, and use that to
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directly call the target's to_get_thread_local_address. */
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spe_context_cache_address
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= target->get_thread_local_address (inferior_ptid,
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spe_context_lm_addr,
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spe_context_offset);
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spe_context_cache_ptid = inferior_ptid;
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}
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catch (const gdb_exception_error &ex)
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{
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return 0;
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}
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}
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/* Read variable value. */
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if (target_read_memory (spe_context_cache_address, buf, wordsize) == 0)
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spe_context = extract_unsigned_integer (buf, wordsize, byte_order);
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/* Cyle through to N'th linked list element. */
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for (i = 0; i < n && spe_context; i++)
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if (target_read_memory (spe_context + align_up (12, wordsize),
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buf, wordsize) == 0)
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spe_context = extract_unsigned_integer (buf, wordsize, byte_order);
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else
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spe_context = 0;
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/* Read current context. */
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if (spe_context
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&& target_read_memory (spe_context, buf, 12) != 0)
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spe_context = 0;
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/* Extract data elements. */
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if (spe_context)
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{
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if (id)
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*id = extract_signed_integer (buf, 4, byte_order);
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if (npc)
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*npc = extract_unsigned_integer (buf + 4, 4, byte_order);
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}
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return spe_context;
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}
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/* Cell/B.E. cross-architecture unwinder support. */
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struct ppu2spu_cache
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{
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struct frame_id frame_id;
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readonly_detached_regcache *regcache;
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};
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static struct gdbarch *
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ppu2spu_prev_arch (struct frame_info *this_frame, void **this_cache)
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{
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struct ppu2spu_cache *cache = (struct ppu2spu_cache *) *this_cache;
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return cache->regcache->arch ();
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}
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static void
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ppu2spu_this_id (struct frame_info *this_frame,
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void **this_cache, struct frame_id *this_id)
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{
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struct ppu2spu_cache *cache = (struct ppu2spu_cache *) *this_cache;
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*this_id = cache->frame_id;
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}
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static struct value *
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ppu2spu_prev_register (struct frame_info *this_frame,
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void **this_cache, int regnum)
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{
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struct ppu2spu_cache *cache = (struct ppu2spu_cache *) *this_cache;
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struct gdbarch *gdbarch = cache->regcache->arch ();
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gdb_byte *buf;
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buf = (gdb_byte *) alloca (register_size (gdbarch, regnum));
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cache->regcache->cooked_read (regnum, buf);
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return frame_unwind_got_bytes (this_frame, regnum, buf);
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}
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struct ppu2spu_data
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{
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struct gdbarch *gdbarch;
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int id;
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unsigned int npc;
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gdb_byte gprs[128*16];
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};
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static enum register_status
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ppu2spu_unwind_register (ppu2spu_data *data, int regnum, gdb_byte *buf)
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{
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enum bfd_endian byte_order = gdbarch_byte_order (data->gdbarch);
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if (regnum >= 0 && regnum < SPU_NUM_GPRS)
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memcpy (buf, data->gprs + 16*regnum, 16);
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else if (regnum == SPU_ID_REGNUM)
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store_unsigned_integer (buf, 4, byte_order, data->id);
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else if (regnum == SPU_PC_REGNUM)
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store_unsigned_integer (buf, 4, byte_order, data->npc);
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else
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return REG_UNAVAILABLE;
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return REG_VALID;
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}
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static int
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ppu2spu_sniffer (const struct frame_unwind *self,
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struct frame_info *this_frame, void **this_prologue_cache)
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{
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struct gdbarch *gdbarch = get_frame_arch (this_frame);
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struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
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enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
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struct ppu2spu_data data;
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struct frame_info *fi;
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CORE_ADDR base, func, backchain, spe_context;
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gdb_byte buf[8];
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int n = 0;
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/* Count the number of SPU contexts already in the frame chain. */
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for (fi = get_next_frame (this_frame); fi; fi = get_next_frame (fi))
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if (get_frame_type (fi) == ARCH_FRAME
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&& gdbarch_bfd_arch_info (get_frame_arch (fi))->arch == bfd_arch_spu)
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n++;
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base = get_frame_sp (this_frame);
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func = get_frame_pc (this_frame);
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if (target_read_memory (base, buf, tdep->wordsize))
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return 0;
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backchain = extract_unsigned_integer (buf, tdep->wordsize, byte_order);
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spe_context = ppc_linux_spe_context (tdep->wordsize, byte_order,
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n, &data.id, &data.npc);
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if (spe_context && base <= spe_context && spe_context < backchain)
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{
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char annex[32];
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/* Find gdbarch for SPU. */
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struct gdbarch_info info;
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gdbarch_info_init (&info);
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info.bfd_arch_info = bfd_lookup_arch (bfd_arch_spu, bfd_mach_spu);
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info.byte_order = BFD_ENDIAN_BIG;
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info.osabi = GDB_OSABI_LINUX;
|
||||
info.id = &data.id;
|
||||
data.gdbarch = gdbarch_find_by_info (info);
|
||||
if (!data.gdbarch)
|
||||
return 0;
|
||||
|
||||
xsnprintf (annex, sizeof annex, "%d/regs", data.id);
|
||||
if (target_read (current_top_target (), TARGET_OBJECT_SPU, annex,
|
||||
data.gprs, 0, sizeof data.gprs)
|
||||
== sizeof data.gprs)
|
||||
{
|
||||
auto cooked_read = [&data] (int regnum, gdb_byte *out_buf)
|
||||
{
|
||||
return ppu2spu_unwind_register (&data, regnum, out_buf);
|
||||
};
|
||||
struct ppu2spu_cache *cache
|
||||
= FRAME_OBSTACK_CALLOC (1, struct ppu2spu_cache);
|
||||
std::unique_ptr<readonly_detached_regcache> regcache
|
||||
(new readonly_detached_regcache (data.gdbarch, cooked_read));
|
||||
|
||||
cache->frame_id = frame_id_build (base, func);
|
||||
cache->regcache = regcache.release ();
|
||||
*this_prologue_cache = cache;
|
||||
return 1;
|
||||
}
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static void
|
||||
ppu2spu_dealloc_cache (struct frame_info *self, void *this_cache)
|
||||
{
|
||||
struct ppu2spu_cache *cache = (struct ppu2spu_cache *) this_cache;
|
||||
delete cache->regcache;
|
||||
}
|
||||
|
||||
static const struct frame_unwind ppu2spu_unwind = {
|
||||
ARCH_FRAME,
|
||||
default_frame_unwind_stop_reason,
|
||||
ppu2spu_this_id,
|
||||
ppu2spu_prev_register,
|
||||
NULL,
|
||||
ppu2spu_sniffer,
|
||||
ppu2spu_dealloc_cache,
|
||||
ppu2spu_prev_arch,
|
||||
};
|
||||
|
||||
/* Initialize linux_record_tdep if not initialized yet.
|
||||
WORDSIZE is 4 or 8 for 32- or 64-bit PowerPC Linux respectively.
|
||||
Sizes of data structures are initialized accordingly. */
|
||||
|
|
@ -2439,21 +2144,6 @@ ppc_linux_init_abi (struct gdbarch_info info,
|
|||
}
|
||||
}
|
||||
|
||||
/* Enable Cell/B.E. if supported by the target. */
|
||||
if (tdesc_compatible_p (info.target_desc,
|
||||
bfd_lookup_arch (bfd_arch_spu, bfd_mach_spu)))
|
||||
{
|
||||
/* Cell/B.E. multi-architecture support. */
|
||||
set_spu_solib_ops (gdbarch);
|
||||
|
||||
/* Cell/B.E. cross-architecture unwinder support. */
|
||||
frame_unwind_prepend_unwinder (gdbarch, &ppu2spu_unwind);
|
||||
|
||||
/* We need to support more than "addr_bit" significant address bits
|
||||
in order to support SPUADDR_ADDR encoded values. */
|
||||
set_gdbarch_significant_addr_bit (gdbarch, 64);
|
||||
}
|
||||
|
||||
set_gdbarch_displaced_step_location (gdbarch,
|
||||
linux_displaced_step_location);
|
||||
|
||||
|
|
@ -2478,15 +2168,9 @@ _initialize_ppc_linux_tdep (void)
|
|||
gdbarch_register_osabi (bfd_arch_rs6000, bfd_mach_rs6k, GDB_OSABI_LINUX,
|
||||
ppc_linux_init_abi);
|
||||
|
||||
/* Attach to observers to track __spe_current_active_context. */
|
||||
gdb::observers::inferior_created.attach (ppc_linux_spe_context_inferior_created);
|
||||
gdb::observers::solib_loaded.attach (ppc_linux_spe_context_solib_loaded);
|
||||
gdb::observers::solib_unloaded.attach (ppc_linux_spe_context_solib_unloaded);
|
||||
|
||||
/* Initialize the Linux target descriptions. */
|
||||
initialize_tdesc_powerpc_32l ();
|
||||
initialize_tdesc_powerpc_altivec32l ();
|
||||
initialize_tdesc_powerpc_cell32l ();
|
||||
initialize_tdesc_powerpc_vsx32l ();
|
||||
initialize_tdesc_powerpc_isa205_32l ();
|
||||
initialize_tdesc_powerpc_isa205_altivec32l ();
|
||||
|
|
@ -2496,7 +2180,6 @@ _initialize_ppc_linux_tdep (void)
|
|||
initialize_tdesc_powerpc_isa207_htm_vsx32l ();
|
||||
initialize_tdesc_powerpc_64l ();
|
||||
initialize_tdesc_powerpc_altivec64l ();
|
||||
initialize_tdesc_powerpc_cell64l ();
|
||||
initialize_tdesc_powerpc_vsx64l ();
|
||||
initialize_tdesc_powerpc_isa205_64l ();
|
||||
initialize_tdesc_powerpc_isa205_altivec64l ();
|
||||
|
|
|
|||
Loading…
Add table
Add a link
Reference in a new issue