Date: Wed, 23 Aug 2017 16:07:43 +0000 (UTC) From: John Baldwin <jhb@FreeBSD.org> To: ports-committers@freebsd.org, svn-ports-all@freebsd.org, svn-ports-head@freebsd.org Subject: svn commit: r448627 - in head/devel/gdb: . files files/kgdb Message-ID: <201708231607.v7NG7hVD070875@repo.freebsd.org>
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Author: jhb (src,doc committer) Date: Wed Aug 23 16:07:42 2017 New Revision: 448627 URL: https://svnweb.freebsd.org/changeset/ports/448627 Log: Add aarch64 support to GDB. This includes support for cross-debugging aarch64 process cores and kernels as well as native support for aarch64 processes. Hardware single stepping is supported, but hardware watchpoints are not yet supported. Reviewed by: luca.pizzamiglio@gmail.com (maintainer) Approved by: az (implicit) Differential Revision: https://reviews.freebsd.org/D12074 Added: head/devel/gdb/files/kgdb/aarch64-fbsd-kern.c (contents, props changed) head/devel/gdb/files/patch-aarch64-fbsd (contents, props changed) Modified: head/devel/gdb/Makefile head/devel/gdb/files/extrapatch-kgdb head/devel/gdb/files/kgdb/fbsd-kvm.c Modified: head/devel/gdb/Makefile ============================================================================== --- head/devel/gdb/Makefile Wed Aug 23 14:54:04 2017 (r448626) +++ head/devel/gdb/Makefile Wed Aug 23 16:07:42 2017 (r448627) @@ -3,7 +3,7 @@ PORTNAME= gdb PORTVERSION= 8.0 -PORTREVISION= 1 +PORTREVISION= 2 CATEGORIES= devel MASTER_SITES= GNU @@ -55,7 +55,7 @@ VER= ${PORTVERSION:S/.//g} PLIST_SUB= VER=${VER} # untested elsewhere, might work -ONLY_FOR_ARCHS= amd64 armv6 i386 mips powerpc powerpc64 +ONLY_FOR_ARCHS= aarch64 amd64 armv6 i386 mips powerpc powerpc64 OPTIONS_DEFINE= DEBUG GDB_LINK GUILE KGDB PYTHON TUI Modified: head/devel/gdb/files/extrapatch-kgdb ============================================================================== --- head/devel/gdb/files/extrapatch-kgdb Wed Aug 23 14:54:04 2017 (r448626) +++ head/devel/gdb/files/extrapatch-kgdb Wed Aug 23 16:07:42 2017 (r448627) @@ -1,5 +1,5 @@ diff --git gdb/Makefile.in gdb/Makefile.in -index 6e96a88a98..98c5fd2664 100644 +index cf59ae7143..0dd72d35d1 100644 --- gdb/Makefile.in +++ gdb/Makefile.in @@ -227,7 +227,8 @@ INCGNU = -I$(srcdir)/gnulib/import -I$(GNULIB_BUILDDIR)/import @@ -12,7 +12,15 @@ index 6e96a88a98..98c5fd2664 100644 # # CLI sub directory definitons -@@ -758,6 +759,7 @@ ALL_64_TARGET_OBS = \ +@@ -745,6 +746,7 @@ TARGET_OBS = @TARGET_OBS@ + # All target-dependent objects files that require 64-bit CORE_ADDR + # (used with --enable-targets=all --enable-64-bit-bfd). + ALL_64_TARGET_OBS = \ ++ aarch64-fbsd-kern.o \ + aarch64-fbsd-tdep.o \ + aarch64-insn.o \ + aarch64-linux-tdep.o \ +@@ -759,6 +761,7 @@ ALL_64_TARGET_OBS = \ amd64-darwin-tdep.o \ amd64-dicos-tdep.o \ amd64-fbsd-tdep.o \ @@ -20,7 +28,7 @@ index 6e96a88a98..98c5fd2664 100644 amd64-linux-tdep.o \ amd64-nbsd-tdep.o \ amd64-obsd-tdep.o \ -@@ -769,6 +771,7 @@ ALL_64_TARGET_OBS = \ +@@ -770,6 +773,7 @@ ALL_64_TARGET_OBS = \ ia64-vms-tdep.o \ mips64-obsd-tdep.o \ sparc64-fbsd-tdep.o \ @@ -28,7 +36,7 @@ index 6e96a88a98..98c5fd2664 100644 sparc64-linux-tdep.o \ sparc64-nbsd-tdep.o \ sparc64-obsd-tdep.o \ -@@ -796,6 +799,9 @@ ALL_TARGET_OBS = \ +@@ -797,6 +801,9 @@ ALL_TARGET_OBS = \ cris-linux-tdep.o \ cris-tdep.o \ dicos-tdep.o \ @@ -38,7 +46,7 @@ index 6e96a88a98..98c5fd2664 100644 fbsd-tdep.o \ frv-linux-tdep.o \ frv-tdep.o \ -@@ -812,6 +818,7 @@ ALL_TARGET_OBS = \ +@@ -813,6 +820,7 @@ ALL_TARGET_OBS = \ i386-darwin-tdep.o \ i386-dicos-tdep.o \ i386-fbsd-tdep.o \ @@ -46,7 +54,7 @@ index 6e96a88a98..98c5fd2664 100644 i386-gnu-tdep.o \ i386-go32-tdep.o \ i386-linux-tdep.o \ -@@ -836,6 +843,7 @@ ALL_TARGET_OBS = \ +@@ -837,6 +845,7 @@ ALL_TARGET_OBS = \ mep-tdep.o \ microblaze-linux-tdep.o \ microblaze-tdep.o \ @@ -54,7 +62,7 @@ index 6e96a88a98..98c5fd2664 100644 mips-fbsd-tdep.o \ mips-linux-tdep.o \ mips-nbsd-tdep.o \ -@@ -853,6 +861,7 @@ ALL_TARGET_OBS = \ +@@ -854,6 +863,7 @@ ALL_TARGET_OBS = \ nto-tdep.o \ obsd-tdep.o \ ppc-fbsd-tdep.o \ @@ -62,7 +70,7 @@ index 6e96a88a98..98c5fd2664 100644 ppc-linux-tdep.o \ ppc-nbsd-tdep.o \ ppc-obsd-tdep.o \ -@@ -1870,7 +1879,7 @@ generated_files = \ +@@ -1871,7 +1881,7 @@ generated_files = \ # Flags needed to compile Python code PYTHON_CFLAGS = @PYTHON_CFLAGS@ @@ -71,7 +79,7 @@ index 6e96a88a98..98c5fd2664 100644 @$(MAKE) $(FLAGS_TO_PASS) DO=all "DODIRS=`echo $(SUBDIRS) | sed 's/testsuite//'`" subdir_do # Rule for compiling .c files in the top-level gdb directory. -@@ -2209,6 +2218,12 @@ gdb$(EXEEXT): gdb.o $(LIBGDB_OBS) $(ADD_DEPS) $(CDEPS) $(TDEPLIBS) +@@ -2210,6 +2220,12 @@ gdb$(EXEEXT): gdb.o $(LIBGDB_OBS) $(ADD_DEPS) $(CDEPS) $(TDEPLIBS) -o gdb$(EXEEXT) gdb.o $(LIBGDB_OBS) \ $(TDEPLIBS) $(TUI_LIBRARY) $(CLIBS) $(LOADLIBES) @@ -84,7 +92,7 @@ index 6e96a88a98..98c5fd2664 100644 # Convenience rule to handle recursion. $(LIBGNU) $(GNULIB_H): all-lib all-lib: $(GNULIB_BUILDDIR)/Makefile -@@ -2253,7 +2268,7 @@ clean mostlyclean: $(CONFIG_CLEAN) +@@ -2254,7 +2270,7 @@ clean mostlyclean: $(CONFIG_CLEAN) @$(MAKE) $(FLAGS_TO_PASS) DO=clean "DODIRS=$(CLEANDIRS)" subdir_do rm -f *.o *.a $(ADD_FILES) *~ init.c-tmp init.l-tmp version.c-tmp rm -f init.c version.c observer.h observer.inc @@ -93,7 +101,15 @@ index 6e96a88a98..98c5fd2664 100644 rm -f gdb[0-9]$(EXEEXT) rm -f test-cp-name-parser$(EXEEXT) rm -f xml-builtin.c stamp-xml -@@ -2475,6 +2490,7 @@ ALLDEPFILES = \ +@@ -2461,6 +2477,7 @@ MAKEOVERRIDES = + + ALLDEPFILES = \ + aarch64-fbsd-nat.c \ ++ aarch64-fbsd-kern.c \ + aarch64-fbsd-tdep.c \ + aarch64-linux-nat.c \ + aarch64-linux-tdep.c \ +@@ -2478,6 +2495,7 @@ ALLDEPFILES = \ amd64-bsd-nat.c \ amd64-darwin-tdep.c \ amd64-dicos-tdep.c \ @@ -101,7 +117,7 @@ index 6e96a88a98..98c5fd2664 100644 amd64-fbsd-nat.c \ amd64-fbsd-tdep.c \ amd64-linux-nat.c \ -@@ -2510,6 +2526,9 @@ ALLDEPFILES = \ +@@ -2513,6 +2531,9 @@ ALLDEPFILES = \ dcache.c \ dicos-tdep.c \ exec.c \ @@ -111,7 +127,7 @@ index 6e96a88a98..98c5fd2664 100644 fbsd-nat.c \ fbsd-tdep.c \ fork-child.c \ -@@ -2531,6 +2550,7 @@ ALLDEPFILES = \ +@@ -2534,6 +2555,7 @@ ALLDEPFILES = \ i386-darwin-nat.c \ i386-darwin-tdep.c \ i386-dicos-tdep.c \ @@ -119,7 +135,7 @@ index 6e96a88a98..98c5fd2664 100644 i386-fbsd-nat.c \ i386-fbsd-tdep.c \ i386-gnu-nat.c \ -@@ -2572,6 +2592,7 @@ ALLDEPFILES = \ +@@ -2575,6 +2597,7 @@ ALLDEPFILES = \ mingw-hdep.c \ mips-fbsd-nat.c \ mips-fbsd-tdep.c \ @@ -127,7 +143,7 @@ index 6e96a88a98..98c5fd2664 100644 mips-linux-nat.c \ mips-linux-tdep.c \ mips-nbsd-nat.c \ -@@ -2589,6 +2610,7 @@ ALLDEPFILES = \ +@@ -2592,6 +2615,7 @@ ALLDEPFILES = \ obsd-nat.c \ obsd-tdep.c \ posix-hdep.c \ @@ -135,7 +151,7 @@ index 6e96a88a98..98c5fd2664 100644 ppc-fbsd-nat.c \ ppc-fbsd-tdep.c \ ppc-linux-nat.c \ -@@ -2633,6 +2655,7 @@ ALLDEPFILES = \ +@@ -2636,6 +2660,7 @@ ALLDEPFILES = \ sparc-sol2-nat.c \ sparc-sol2-tdep.c \ sparc-tdep.c \ @@ -143,7 +159,7 @@ index 6e96a88a98..98c5fd2664 100644 sparc64-fbsd-nat.c \ sparc64-fbsd-tdep.c \ sparc64-linux-nat.c \ -@@ -2664,6 +2687,12 @@ ALLDEPFILES = \ +@@ -2667,6 +2692,12 @@ ALLDEPFILES = \ xtensa-linux-tdep.c \ xtensa-tdep.c \ xtensa-xtregs.c \ @@ -156,7 +172,7 @@ index 6e96a88a98..98c5fd2664 100644 common/mingw-strerror.c \ common/posix-strerror.c -@@ -2925,7 +2954,7 @@ endif +@@ -2928,7 +2959,7 @@ endif # A list of all the objects we might care about in this build, for # dependency tracking. @@ -277,10 +293,10 @@ index 50f6f592ba..89cdc9cc8e 100644 # GDB may fork/exec the iconv program to get the list of supported character diff --git gdb/configure.tgt gdb/configure.tgt -index fdcb7b1d69..d99aa325ab 100644 +index f72a0dbbc1..2d73300961 100644 --- gdb/configure.tgt +++ gdb/configure.tgt -@@ -198,7 +198,13 @@ i[34567]86-*-dicos*) +@@ -203,7 +203,13 @@ i[34567]86-*-dicos*) i[34567]86-*-freebsd* | i[34567]86-*-kfreebsd*-gnu) # Target: FreeBSD/i386 gdb_target_obs="i386-tdep.o i387-tdep.o i386-bsd-tdep.o i386-fbsd-tdep.o \ @@ -295,7 +311,7 @@ index fdcb7b1d69..d99aa325ab 100644 ;; i[34567]86-*-netbsd* | i[34567]86-*-knetbsd*-gnu) # Target: NetBSD/i386 -@@ -372,7 +378,8 @@ mips*-*-netbsd* | mips*-*-knetbsd*-gnu) +@@ -377,7 +383,8 @@ mips*-*-netbsd* | mips*-*-knetbsd*-gnu) ;; mips*-*-freebsd*) # Target: MIPS running FreeBSD @@ -305,7 +321,7 @@ index fdcb7b1d69..d99aa325ab 100644 gdb_sim=../sim/mips/libsim.a ;; mips64*-*-openbsd*) -@@ -431,7 +438,8 @@ powerpc*-*-freebsd*) +@@ -436,7 +443,8 @@ powerpc*-*-freebsd*) # Target: FreeBSD/powerpc gdb_target_obs="rs6000-tdep.o ppc-sysv-tdep.o ppc64-tdep.o \ ppc-fbsd-tdep.o fbsd-tdep.o solib-svr4.o \ @@ -315,7 +331,7 @@ index fdcb7b1d69..d99aa325ab 100644 ;; powerpc-*-netbsd* | powerpc-*-knetbsd*-gnu) -@@ -555,7 +563,8 @@ sparc*-*-freebsd* | sparc*-*-kfreebsd*-gnu) +@@ -560,7 +568,8 @@ sparc*-*-freebsd* | sparc*-*-kfreebsd*-gnu) # Target: FreeBSD/sparc64 gdb_target_obs="sparc-tdep.o sparc64-tdep.o sparc64-fbsd-tdep.o \ fbsd-tdep.o solib-svr4.o \ @@ -325,7 +341,7 @@ index fdcb7b1d69..d99aa325ab 100644 ;; sparc-*-netbsd* | sparc-*-knetbsd*-gnu) # Target: NetBSD/sparc -@@ -686,7 +695,9 @@ x86_64-*-freebsd* | x86_64-*-kfreebsd*-gnu) +@@ -691,7 +700,9 @@ x86_64-*-freebsd* | x86_64-*-kfreebsd*-gnu) # Target: FreeBSD/amd64 gdb_target_obs="amd64-tdep.o amd64-fbsd-tdep.o i386-tdep.o \ i387-tdep.o i386-bsd-tdep.o i386-fbsd-tdep.o \ Added: head/devel/gdb/files/kgdb/aarch64-fbsd-kern.c ============================================================================== --- /dev/null 00:00:00 1970 (empty, because file is newly added) +++ head/devel/gdb/files/kgdb/aarch64-fbsd-kern.c Wed Aug 23 16:07:42 2017 (r448627) @@ -0,0 +1,196 @@ +/*- + * Copyright (c) 2017 John Baldwin <jhb@FreeBSD.org> + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR + * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES + * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. + * IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT + * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF + * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + * $FreeBSD$ + */ + +/* Target-dependent code for FreeBSD/aarch64 kernels. */ + +#include "defs.h" + +#include "aarch64-tdep.h" +#include "frame-unwind.h" +#include "gdbcore.h" +#include "osabi.h" +#include "regcache.h" +#include "regset.h" +#include "solib.h" +#include "target.h" +#include "trad-frame.h" + +#include "kgdb.h" + +static const struct regcache_map_entry aarch64_fbsd_pcbmap[] = + { + { 30, AARCH64_X0_REGNUM, 8 }, /* x0 ... x29 */ + { 1, AARCH64_LR_REGNUM, 8 }, + { 1, AARCH64_SP_REGNUM, 8 }, + { 1, AARCH64_PC_REGNUM, 8 }, + { 0 } + }; + +static const struct regset aarch64_fbsd_pcbregset = + { + aarch64_fbsd_pcbmap, + regcache_supply_regset, regcache_collect_regset + }; + +static void +aarch64_fbsd_supply_pcb(struct regcache *regcache, CORE_ADDR pcb_addr) +{ + gdb_byte buf[8 * 33]; + + if (target_read_memory (pcb_addr, buf, sizeof buf) == 0) + regcache_supply_regset (&aarch64_fbsd_pcbregset, regcache, -1, buf, + sizeof (buf)); +} + +static struct trad_frame_cache * +aarch64_fbsd_trapframe_cache (struct frame_info *this_frame, void **this_cache) +{ + struct gdbarch *gdbarch = get_frame_arch (this_frame); + enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); + struct trad_frame_cache *cache; + CORE_ADDR addr, func, pc, sp; + const char *name; + int i; + + if (*this_cache != NULL) + return ((struct trad_frame_cache *)*this_cache); + + cache = trad_frame_cache_zalloc (this_frame); + *this_cache = cache; + + func = get_frame_func (this_frame); + sp = get_frame_register_unsigned (this_frame, AARCH64_SP_REGNUM); + + find_pc_partial_function (func, &name, NULL, NULL); + if (strcmp(name, "fork_trampoline") == 0 && get_frame_pc (this_frame) == func) + { + /* fork_exit hasn't been called (kthread has never run), so SP + hasn't been initialized yet. The stack pointer is stored in + the X2 in the pcb. */ + sp = get_frame_register_unsigned (this_frame, AARCH64_X0_REGNUM + 2); + } + + trad_frame_set_reg_addr (cache, AARCH64_SP_REGNUM, sp); + trad_frame_set_reg_addr (cache, AARCH64_LR_REGNUM, sp + 8); + trad_frame_set_reg_addr (cache, AARCH64_PC_REGNUM, sp + 16); + trad_frame_set_reg_addr (cache, AARCH64_CPSR_REGNUM, sp + 24); + for (i = 0; i < 30; i++) + trad_frame_set_reg_addr (cache, AARCH64_X0_REGNUM + 1, sp + 32 + i * 8); + + /* Read $PC from trap frame. */ + pc = read_memory_unsigned_integer (sp + 16, 8, byte_order); + + if (pc == 0 && strcmp(name, "fork_trampoline") == 0) + { + /* Initial frame of a kthread; terminate backtrace. */ + trad_frame_set_id (cache, outer_frame_id); + } + else + { + /* Construct the frame ID using the function start. */ + trad_frame_set_id (cache, frame_id_build (sp + 8 * 34, func)); + } + + return cache; +} + +static void +aarch64_fbsd_trapframe_this_id (struct frame_info *this_frame, + void **this_cache, struct frame_id *this_id) +{ + struct trad_frame_cache *cache = + aarch64_fbsd_trapframe_cache (this_frame, this_cache); + + trad_frame_get_id (cache, this_id); +} + +static struct value * +aarch64_fbsd_trapframe_prev_register (struct frame_info *this_frame, + void **this_cache, int regnum) +{ + struct trad_frame_cache *cache = + aarch64_fbsd_trapframe_cache (this_frame, this_cache); + + return trad_frame_get_register (cache, this_frame, regnum); +} + +static int +aarch64_fbsd_trapframe_sniffer (const struct frame_unwind *self, + struct frame_info *this_frame, + void **this_prologue_cache) +{ + const char *name; + + find_pc_partial_function (get_frame_func (this_frame), &name, NULL, NULL); + return (name && ((strcmp (name, "handle_el1h_sync") == 0) + || (strcmp (name, "handle_el1h_irq") == 0) + || (strcmp (name, "handle_el0h_sync") == 0) + || (strcmp (name, "handle_el0h_irq") == 0) + || (strcmp (name, "handle_el0h_error") == 0) + || (strcmp (name, "fork_trampoline") == 0))); +} + +static const struct frame_unwind aarch64_fbsd_trapframe_unwind = { + SIGTRAMP_FRAME, + default_frame_unwind_stop_reason, + aarch64_fbsd_trapframe_this_id, + aarch64_fbsd_trapframe_prev_register, + NULL, + aarch64_fbsd_trapframe_sniffer +}; + +/* Implement the 'init_osabi' method of struct gdb_osabi_handler. */ + +static void +aarch64_fbsd_kernel_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch) +{ + struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch); + + frame_unwind_prepend_unwinder (gdbarch, &aarch64_fbsd_trapframe_unwind); + + set_solib_ops (gdbarch, &kld_so_ops); + + /* Enable longjmp. */ + tdep->jb_pc = 13; + + fbsd_vmcore_set_supply_pcb (gdbarch, aarch64_fbsd_supply_pcb); + fbsd_vmcore_set_cpu_pcb_addr (gdbarch, kgdb_trgt_stop_pcb); +} + +/* Provide a prototype to silence -Wmissing-prototypes. */ +extern initialize_file_ftype _initialize_aarch64_kgdb_tdep; + +void +_initialize_aarch64_kgdb_tdep (void) +{ + gdbarch_register_osabi_sniffer(bfd_arch_aarch64, + bfd_target_elf_flavour, + fbsd_kernel_osabi_sniffer); + gdbarch_register_osabi (bfd_arch_aarch64, 0, GDB_OSABI_FREEBSD_KERNEL, + aarch64_fbsd_kernel_init_abi); +} Modified: head/devel/gdb/files/kgdb/fbsd-kvm.c ============================================================================== --- head/devel/gdb/files/kgdb/fbsd-kvm.c Wed Aug 23 14:54:04 2017 (r448626) +++ head/devel/gdb/files/kgdb/fbsd-kvm.c Wed Aug 23 16:07:42 2017 (r448627) @@ -50,6 +50,7 @@ __FBSDID("$FreeBSD$"); #include <inferior.h> #include <language.h> #include "objfiles.h" +#include "osabi.h" #include <regcache.h> #include <solib.h> #include <target.h> @@ -185,9 +186,30 @@ fbsd_kernel_osabi_sniffer(bfd *abfd) bfd_byte buf[sizeof(KERNEL_INTERP)]; bfd_byte *bufp; - /* FreeBSD ELF kernels have a FreeBSD/ELF OS ABI. */ - if (elf_elfheader(abfd)->e_ident[EI_OSABI] != ELFOSABI_FREEBSD) + /* First, determine if this is a FreeBSD/ELF binary. */ + switch (elf_elfheader(abfd)->e_ident[EI_OSABI]) { + case ELFOSABI_FREEBSD: + break; + case ELFOSABI_NONE: { + enum gdb_osabi osabi = GDB_OSABI_UNKNOWN; + + bfd_map_over_sections (abfd, + generic_elf_osabi_sniff_abi_tag_sections, + &osabi); + + /* + * aarch64 kernels don't have the right note tag for + * kernels so just look for /red/herring anyway. + */ + if (osabi == GDB_OSABI_UNKNOWN && + elf_elfheader(abfd)->e_machine == EM_AARCH64) + break; + if (osabi != GDB_OSABI_FREEBSD) + return (GDB_OSABI_UNKNOWN); + } + default: return (GDB_OSABI_UNKNOWN); + } /* FreeBSD ELF kernels have an interpreter path of "/red/herring". */ bufp = buf; Added: head/devel/gdb/files/patch-aarch64-fbsd ============================================================================== --- /dev/null 00:00:00 1970 (empty, because file is newly added) +++ head/devel/gdb/files/patch-aarch64-fbsd Wed Aug 23 16:07:42 2017 (r448627) @@ -0,0 +1,470 @@ +diff --git gdb/Makefile.in gdb/Makefile.in +index 1d2dbaf3f7..d8e2b49523 100644 +--- gdb/Makefile.in ++++ gdb/Makefile.in +@@ -745,6 +745,7 @@ TARGET_OBS = @TARGET_OBS@ + # All target-dependent objects files that require 64-bit CORE_ADDR + # (used with --enable-targets=all --enable-64-bit-bfd). + ALL_64_TARGET_OBS = \ ++ aarch64-fbsd-tdep.o \ + aarch64-insn.o \ + aarch64-linux-tdep.o \ + aarch64-newlib-tdep.o \ +@@ -2458,6 +2459,8 @@ force_update: + MAKEOVERRIDES = + + ALLDEPFILES = \ ++ aarch64-fbsd-nat.c \ ++ aarch64-fbsd-tdep.c \ + aarch64-linux-nat.c \ + aarch64-linux-tdep.c \ + aarch64-newlib-tdep.c \ +diff --git gdb/aarch64-fbsd-nat.c gdb/aarch64-fbsd-nat.c +new file mode 100644 +index 0000000000..f7855b9c0b +--- /dev/null ++++ gdb/aarch64-fbsd-nat.c +@@ -0,0 +1,133 @@ ++/* Native-dependent code for FreeBSD/aarch64. ++ ++ Copyright (C) 2017 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 "defs.h" ++#include "target.h" ++ ++#include <sys/types.h> ++#include <sys/ptrace.h> ++#include <machine/reg.h> ++ ++#include "fbsd-nat.h" ++#include "aarch64-tdep.h" ++#include "aarch64-fbsd-tdep.h" ++#include "inf-ptrace.h" ++ ++/* Determine if PT_GETREGS fetches REGNUM. */ ++ ++static bool ++getregs_supplies (struct gdbarch *gdbarch, int regnum) ++{ ++ return (regnum >= AARCH64_X0_REGNUM && regnum <= AARCH64_CPSR_REGNUM); ++} ++ ++/* Determine if PT_GETFPREGS fetches REGNUM. */ ++ ++static bool ++getfpregs_supplies (struct gdbarch *gdbarch, int regnum) ++{ ++ return (regnum >= AARCH64_V0_REGNUM && regnum <= AARCH64_FPCR_REGNUM); ++} ++ ++/* Fetch register REGNUM from the inferior. If REGNUM is -1, do this ++ for all registers. */ ++ ++static void ++aarch64_fbsd_fetch_inferior_registers (struct target_ops *ops, ++ struct regcache *regcache, int regnum) ++{ ++ pid_t pid = get_ptrace_pid (regcache_get_ptid (regcache)); ++ ++ struct gdbarch *gdbarch = get_regcache_arch (regcache); ++ if (regnum == -1 || getregs_supplies (gdbarch, regnum)) ++ { ++ struct reg regs; ++ ++ if (ptrace (PT_GETREGS, pid, (PTRACE_TYPE_ARG3) ®s, 0) == -1) ++ perror_with_name (_("Couldn't get registers")); ++ ++ regcache_supply_regset (&aarch64_fbsd_gregset, regcache, regnum, ®s, ++ sizeof (regs)); ++ } ++ ++ if (regnum == -1 || getfpregs_supplies (gdbarch, regnum)) ++ { ++ struct fpreg fpregs; ++ ++ if (ptrace (PT_GETFPREGS, pid, (PTRACE_TYPE_ARG3) &fpregs, 0) == -1) ++ perror_with_name (_("Couldn't get floating point status")); ++ ++ regcache_supply_regset (&aarch64_fbsd_fpregset, regcache, regnum, &fpregs, ++ sizeof (fpregs)); ++ } ++} ++ ++/* Store register REGNUM back into the inferior. If REGNUM is -1, do ++ this for all registers. */ ++ ++static void ++aarch64_fbsd_store_inferior_registers (struct target_ops *ops, ++ struct regcache *regcache, int regnum) ++{ ++ pid_t pid = get_ptrace_pid (regcache_get_ptid (regcache)); ++ ++ struct gdbarch *gdbarch = get_regcache_arch (regcache); ++ if (regnum == -1 || getregs_supplies (gdbarch, regnum)) ++ { ++ struct reg regs; ++ ++ if (ptrace (PT_GETREGS, pid, (PTRACE_TYPE_ARG3) ®s, 0) == -1) ++ perror_with_name (_("Couldn't get registers")); ++ ++ regcache_collect_regset (&aarch64_fbsd_gregset, regcache, regnum, ®s, ++ sizeof (regs)); ++ ++ if (ptrace (PT_SETREGS, pid, (PTRACE_TYPE_ARG3) ®s, 0) == -1) ++ perror_with_name (_("Couldn't write registers")); ++ } ++ ++ if (regnum == -1 || getfpregs_supplies (gdbarch, regnum)) ++ { ++ struct fpreg fpregs; ++ ++ if (ptrace (PT_GETFPREGS, pid, (PTRACE_TYPE_ARG3) &fpregs, 0) == -1) ++ perror_with_name (_("Couldn't get floating point status")); ++ ++ regcache_collect_regset (&aarch64_fbsd_fpregset, regcache, regnum, &fpregs, ++ sizeof (fpregs)); ++ ++ if (ptrace (PT_SETFPREGS, pid, (PTRACE_TYPE_ARG3) &fpregs, 0) == -1) ++ perror_with_name (_("Couldn't write floating point status")); ++ } ++} ++ ++ ++/* Provide a prototype to silence -Wmissing-prototypes. */ ++void _initialize_aarch64_fbsd_nat (void); ++ ++void ++_initialize_aarch64_fbsd_nat (void) ++{ ++ struct target_ops *t; ++ ++ t = inf_ptrace_target (); ++ t->to_fetch_registers = aarch64_fbsd_fetch_inferior_registers; ++ t->to_store_registers = aarch64_fbsd_store_inferior_registers; ++ fbsd_nat_add_target (t); ++} +diff --git gdb/aarch64-fbsd-tdep.c gdb/aarch64-fbsd-tdep.c +new file mode 100644 +index 0000000000..f8ce627282 +--- /dev/null ++++ gdb/aarch64-fbsd-tdep.c +@@ -0,0 +1,208 @@ ++/* Target-dependent code for FreeBSD/aarch64. ++ ++ Copyright (C) 2017 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 "defs.h" ++ ++#include "gdbarch.h" ++#include "fbsd-tdep.h" ++#include "aarch64-tdep.h" ++#include "aarch64-fbsd-tdep.h" ++#include "osabi.h" ++#include "solib-svr4.h" ++#include "target.h" ++#include "tramp-frame.h" ++#include "trad-frame.h" ++ ++/* In a signal frame, sp points to a 'struct sigframe' which is ++ defined as: ++ ++ struct sigframe { ++ siginfo_t sf_si; ++ ucontext_t sf_uc; ++ }; ++ ++ ucontext_t is defined as: ++ ++ struct __ucontext { ++ sigset_t uc_sigmask; ++ mcontext_t uc_mcontext; ++ ... ++ }; ++ ++ The mcontext_t contains the general purpose register set followed ++ by the floating point register set. The floating point register ++ set is only valid if the _MC_FP_VALID flag is set in mc_flags. */ ++ ++#define AARCH64_MCONTEXT_REG_SIZE 8 ++#define AARCH64_MCONTEXT_FPREG_SIZE 16 ++#define AARCH64_SIGFRAME_UCONTEXT_OFFSET 80 ++#define AARCH64_UCONTEXT_MCONTEXT_OFFSET 16 ++#define AARCH64_MCONTEXT_FPREGS_OFFSET 272 ++#define AARCH64_MCONTEXT_FLAGS_OFFSET 800 ++#define AARCH64_MCONTEXT_FLAG_FP_VALID 0x1 ++ ++/* Implement the "init" method of struct tramp_frame. */ ++ ++static void ++aarch64_fbsd_sigframe_init (const struct tramp_frame *self, ++ struct frame_info *this_frame, ++ struct trad_frame_cache *this_cache, ++ CORE_ADDR func) ++{ ++ struct gdbarch *gdbarch = get_frame_arch (this_frame); ++ enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); ++ CORE_ADDR sp = get_frame_register_unsigned (this_frame, AARCH64_SP_REGNUM); ++ CORE_ADDR mcontext_addr = ++ sp ++ + AARCH64_SIGFRAME_UCONTEXT_OFFSET ++ + AARCH64_UCONTEXT_MCONTEXT_OFFSET; ++ gdb_byte buf[4]; ++ int i; ++ ++ for (i = 0; i < 30; i++) ++ { ++ trad_frame_set_reg_addr (this_cache, ++ AARCH64_X0_REGNUM + i, ++ mcontext_addr + i * AARCH64_MCONTEXT_REG_SIZE); ++ } ++ trad_frame_set_reg_addr (this_cache, AARCH64_LR_REGNUM, ++ mcontext_addr + 30 * AARCH64_MCONTEXT_REG_SIZE); ++ trad_frame_set_reg_addr (this_cache, AARCH64_SP_REGNUM, ++ mcontext_addr + 31 * AARCH64_MCONTEXT_REG_SIZE); ++ trad_frame_set_reg_addr (this_cache, AARCH64_PC_REGNUM, ++ mcontext_addr + 32 * AARCH64_MCONTEXT_REG_SIZE); ++ trad_frame_set_reg_addr (this_cache, AARCH64_CPSR_REGNUM, ++ mcontext_addr + 33 * AARCH64_MCONTEXT_REG_SIZE); ++ ++ if (target_read_memory (mcontext_addr + AARCH64_MCONTEXT_FLAGS_OFFSET, buf, ++ 4) == 0 ++ && (extract_unsigned_integer (buf, 4, byte_order) ++ & AARCH64_MCONTEXT_FLAG_FP_VALID)) ++ { ++ for (i = 0; i < 32; i++) ++ { ++ trad_frame_set_reg_addr (this_cache, AARCH64_V0_REGNUM + i, ++ mcontext_addr ++ + AARCH64_MCONTEXT_FPREGS_OFFSET ++ + i * AARCH64_MCONTEXT_FPREG_SIZE); ++ } ++ trad_frame_set_reg_addr (this_cache, AARCH64_FPSR_REGNUM, ++ mcontext_addr + AARCH64_MCONTEXT_FPREGS_OFFSET ++ + 32 * AARCH64_MCONTEXT_FPREG_SIZE); ++ trad_frame_set_reg_addr (this_cache, AARCH64_FPCR_REGNUM, ++ mcontext_addr + AARCH64_MCONTEXT_FPREGS_OFFSET ++ + 32 * AARCH64_MCONTEXT_FPREG_SIZE + 4); ++ } ++ ++ trad_frame_set_id (this_cache, frame_id_build (sp, func)); ++} ++ ++static const struct tramp_frame aarch64_fbsd_sigframe = ++{ ++ SIGTRAMP_FRAME, ++ 4, ++ { ++ {0x910003e0, -1}, /* mov x0, sp */ ++ {0x91014000, -1}, /* add x0, x0, #SF_UC */ ++ {0xd2803428, -1}, /* mov x8, #SYS_sigreturn */ ++ {0xd4000001, -1}, /* svc 0x0 */ ++ {TRAMP_SENTINEL_INSN, -1} ++ }, ++ aarch64_fbsd_sigframe_init ++}; ++ ++/* Register maps. */ ++ ++static const struct regcache_map_entry aarch64_fbsd_gregmap[] = ++ { ++ { 30, AARCH64_X0_REGNUM, 8 }, /* x0 ... x29 */ ++ { 1, AARCH64_LR_REGNUM, 8 }, ++ { 1, AARCH64_SP_REGNUM, 8 }, ++ { 1, AARCH64_PC_REGNUM, 8 }, ++ { 1, AARCH64_CPSR_REGNUM, 4 }, ++ { 0 } ++ }; ++ ++static const struct regcache_map_entry aarch64_fbsd_fpregmap[] = ++ { ++ { 32, AARCH64_V0_REGNUM, 16 }, /* v0 ... v31 */ ++ { 1, AARCH64_FPSR_REGNUM, 4 }, ++ { 1, AARCH64_FPCR_REGNUM, 4 }, ++ { 0 } ++ }; ++ ++/* Register set definitions. */ ++ ++const struct regset aarch64_fbsd_gregset = ++ { ++ aarch64_fbsd_gregmap, ++ regcache_supply_regset, regcache_collect_regset ++ }; ++ ++const struct regset aarch64_fbsd_fpregset = ++ { ++ aarch64_fbsd_fpregmap, ++ regcache_supply_regset, regcache_collect_regset ++ }; ++ ++/* Implement the "regset_from_core_section" gdbarch method. */ ++ ++static void ++aarch64_fbsd_iterate_over_regset_sections (struct gdbarch *gdbarch, ++ iterate_over_regset_sections_cb *cb, ++ void *cb_data, ++ const struct regcache *regcache) ++{ ++ cb (".reg", AARCH64_FBSD_SIZEOF_GREGSET, &aarch64_fbsd_gregset, ++ NULL, cb_data); ++ cb (".reg2", AARCH64_FBSD_SIZEOF_FPREGSET, &aarch64_fbsd_fpregset, ++ NULL, cb_data); ++} ++ ++/* Implement the 'init_osabi' method of struct gdb_osabi_handler. */ ++ ++static void ++aarch64_fbsd_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch) ++{ ++ struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch); ++ ++ /* Generic FreeBSD support. */ ++ fbsd_init_abi (info, gdbarch); ++ ++ set_solib_svr4_fetch_link_map_offsets (gdbarch, ++ svr4_lp64_fetch_link_map_offsets); ++ ++ tramp_frame_prepend_unwinder (gdbarch, &aarch64_fbsd_sigframe); ++ ++ /* Enable longjmp. */ ++ tdep->jb_pc = 13; ++ ++ set_gdbarch_iterate_over_regset_sections ++ (gdbarch, aarch64_fbsd_iterate_over_regset_sections); ++} ++ ++/* Provide a prototype to silence -Wmissing-prototypes. */ ++extern initialize_file_ftype _initialize_aarch64_fbsd_tdep; ++ ++void ++_initialize_aarch64_fbsd_tdep (void) ++{ ++ gdbarch_register_osabi (bfd_arch_aarch64, 0, GDB_OSABI_FREEBSD, ++ aarch64_fbsd_init_abi); ++} +diff --git gdb/aarch64-fbsd-tdep.h gdb/aarch64-fbsd-tdep.h +new file mode 100644 +index 0000000000..0f66dd3925 +--- /dev/null ++++ gdb/aarch64-fbsd-tdep.h +@@ -0,0 +1,33 @@ ++/* FreeBSD/aarch64 target support, prototypes. ++ ++ Copyright (C) 2017 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 "regset.h" ++ ++/* The general-purpose regset consists of 30 X registers, plus LR, SP, ++ ELR, and SPSR registers. SPSR is 32 bits but the structure is ++ passed to 64 bit alignment. */ ++#define AARCH64_FBSD_SIZEOF_GREGSET (34 * X_REGISTER_SIZE) ++ ++/* The fp regset consists of 32 V registers, plus FPSR and FPCR which ++ are 4 bytes wide each, and the whole structure is padded to 128 bit ++ alignment. */ ++#define AARCH64_FBSD_SIZEOF_FPREGSET (33 * V_REGISTER_SIZE) ++ ++extern const struct regset aarch64_fbsd_gregset; ++extern const struct regset aarch64_fbsd_fpregset; +diff --git gdb/config/aarch64/fbsd.mh gdb/config/aarch64/fbsd.mh +new file mode 100644 +index 0000000000..4171987bc9 +--- /dev/null ++++ gdb/config/aarch64/fbsd.mh +@@ -0,0 +1,23 @@ ++# Host: Freebsd/aarch64 ++# ++# Copyright (C) 2017 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/>. ++ ++NATDEPFILES= inf-ptrace.o fork-child.o aarch64-fbsd-nat.o fbsd-nat.o ++HAVE_NATIVE_GCORE_HOST = 1 ++ ++LOADLIBES= -lkvm +diff --git gdb/configure.host gdb/configure.host +index d74fd04934..304675f137 100644 +--- gdb/configure.host ++++ gdb/configure.host +@@ -84,6 +84,7 @@ case "${host}" in + *-*-darwin*) gdb_host=darwin ;; + + aarch64*-*-linux*) gdb_host=linux ;; ++aarch64*-*-freebsd*) gdb_host=fbsd ;; + + alpha*-*-linux*) gdb_host=alpha-linux ;; + alpha*-*-netbsd* | alpha*-*-knetbsd*-gnu) +diff --git gdb/configure.tgt gdb/configure.tgt +index fdcb7b1d69..f72a0dbbc1 100644 +--- gdb/configure.tgt ++++ gdb/configure.tgt +@@ -44,6 +44,11 @@ aarch64*-*-elf | aarch64*-*-rtems*) + gdb_target_obs="aarch64-tdep.o aarch64-newlib-tdep.o aarch64-insn.o" + ;; + ++aarch64*-*-freebsd*) ++ # Target: FreeBSD/aarch64 ++ gdb_target_obs="aarch64-tdep.o aarch64-fbsd-tdep.o aarch64-insn.o" ++ ;; ++ + aarch64*-*-linux*) + # Target: AArch64 linux + gdb_target_obs="aarch64-tdep.o aarch64-linux-tdep.o aarch64-insn.o \
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