gcc: Add initial support for AArch64 Haiku

Signed-off-by: Jaroslaw Pelczar <jarek@jpelczar.com>
Change-Id: I8bd362b61ded01ae1b15d0a999d0db947204aeb7
Reviewed-on: https://review.haiku-os.org/c/buildtools/+/1797
Reviewed-by: waddlesplash <waddlesplash@gmail.com>

binutils/bfd/config.bfd

@@ -255,6 +255,11 @@ case "${targ}" in
     targ_selvecs=aarch64_elf64_be_cloudabi_vec
     want64=true
     ;;
+  aarch64-*-haiku*)
+    targ_defvec=aarch64_elf64_le_vec
+    targ_selvecs="aarch64_elf64_be_vec aarch64_elf32_le_vec aarch64_elf32_be_vec arm_elf32_le_vec arm_elf32_be_vec"
+    want64=true
+    ;;
   aarch64-*-linux*)
     targ_defvec=aarch64_elf64_le_vec
     targ_selvecs="aarch64_elf64_be_vec aarch64_elf32_le_vec aarch64_elf32_be_vec arm_elf32_le_vec arm_elf32_be_vec"

binutils/ld/Makefile.am

@@ -398,6 +398,7 @@ ALL_64_EMULATION_SOURCES = \
 	eaarch64cloudabib.c \
 	eaarch64fbsd.c \
 	eaarch64fbsdb.c \
+	eaarch64haiku.c \
 	eaarch64linux.c \
 	eaarch64linuxb.c \
 	eaarch64linux32.c \
@@ -1561,6 +1562,10 @@ eaarch64fbsdb.c: $(srcdir)/emulparams/aarch64fbsdb.sh $(srcdir)/emulparams/aarch
   $(ELF_DEPS) $(srcdir)/emultempl/aarch64elf.em \
   $(srcdir)/scripttempl/elf.sc ${GEN_DEPENDS}
 
+eaarch64haiku.c: $(srcdir)/emulparams/aarch64haiku.sh \
+  $(ELF_DEPS) $(srcdir)/emultempl/aarch64elf.em \
+  $(srcdir)/scripttempl/elf.sc ${GEN_DEPENDS}
+
 eaarch64linux.c: $(srcdir)/emulparams/aarch64linux.sh \
   $(ELF_DEPS) $(srcdir)/emultempl/aarch64elf.em \
   $(srcdir)/scripttempl/elf.sc ${GEN_DEPENDS}

binutils/ld/Makefile.in

@@ -521,6 +521,7 @@ pdfdir = @pdfdir@
 prefix = @prefix@
 program_transform_name = @program_transform_name@
 psdir = @psdir@
+runstatedir = @runstatedir@
 sbindir = @sbindir@
 sharedstatedir = @sharedstatedir@
 srcdir = @srcdir@
@@ -749,8 +750,8 @@ ALL_EMULATION_SOURCES = \
 	eelf32or1k_linux.c \
 	eelf32ppc.c \
 	eelf32ppc_fbsd.c \
-	eelf32ppchaiku.c \
 	eelf32ppclinux.c \
+	eelf32ppchaiku.c \
 	eelf32ppcnto.c \
 	eelf32ppcsim.c \
 	eelf32ppcvxworks.c \
@@ -779,6 +780,7 @@ ALL_EMULATION_SOURCES = \
 	eelf_i386_nacl.c \
 	eelf_i386_sol2.c \
 	eelf_i386_vxworks.c \
+	eelf_mipsel_haiku.c \
 	eelf_iamcu.c \
 	eelf_s390.c \
 	eh8300elf.c \
@@ -882,6 +884,7 @@ ALL_64_EMULATION_SOURCES = \
 	eaarch64cloudabib.c \
 	eaarch64fbsd.c \
 	eaarch64fbsdb.c \
+	eaarch64haiku.c \
 	eaarch64linux.c \
 	eaarch64linuxb.c \
 	eaarch64linux32.c \
@@ -943,8 +946,8 @@ ALL_64_EMULATION_SOURCES = \
 	eelf_k1om_fbsd.c \
 	eelf_x86_64.c \
 	eelf_x86_64_cloudabi.c \
-	eelf_x86_64_fbsd.c \
 	eelf_x86_64_haiku.c \
+	eelf_x86_64_fbsd.c \
 	eelf_x86_64_nacl.c \
 	eelf_x86_64_sol2.c \
 	ehppa64linux.c \
@@ -1203,6 +1206,7 @@ distclean-compile:
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/eaarch64elfb.Po@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/eaarch64fbsd.Po@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/eaarch64fbsdb.Po@am__quote@
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/eaarch64haiku.Po@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/eaarch64linux.Po@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/eaarch64linux32.Po@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/eaarch64linux32b.Po@am__quote@
@@ -1224,6 +1228,7 @@ distclean-compile:
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/earmelf.Po@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/earmelf_fbsd.Po@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/earmelf_fuchsia.Po@am__quote@
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/earmelf_haiku.Po@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/earmelf_linux.Po@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/earmelf_linux_eabi.Po@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/earmelf_linux_fdpiceabi.Po@am__quote@
@@ -1342,6 +1347,7 @@ distclean-compile:
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/eelf32or1k_linux.Po@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/eelf32ppc.Po@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/eelf32ppc_fbsd.Po@am__quote@
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/eelf32ppchaiku.Po@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/eelf32ppclinux.Po@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/eelf32ppcnto.Po@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/eelf32ppcsim.Po@am__quote@
@@ -1390,6 +1396,7 @@ distclean-compile:
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/eelf_i386_be.Po@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/eelf_i386_chaos.Po@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/eelf_i386_fbsd.Po@am__quote@
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/eelf_i386_haiku.Po@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/eelf_i386_ldso.Po@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/eelf_i386_nacl.Po@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/eelf_i386_sol2.Po@am__quote@
@@ -1399,10 +1406,12 @@ distclean-compile:
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/eelf_k1om_fbsd.Po@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/eelf_l1om.Po@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/eelf_l1om_fbsd.Po@am__quote@
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/eelf_mipsel_haiku.Po@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/eelf_s390.Po@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/eelf_x86_64.Po@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/eelf_x86_64_cloudabi.Po@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/eelf_x86_64_fbsd.Po@am__quote@
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/eelf_x86_64_haiku.Po@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/eelf_x86_64_nacl.Po@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/eelf_x86_64_sol2.Po@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/eh8300elf.Po@am__quote@
@@ -2933,13 +2942,13 @@ eelf_i386_sol2.c: $(srcdir)/emulparams/elf_i386_sol2.sh \
   $(srcdir)/emultempl/solaris2.em \
   $(ELF_X86_DEPS) $(srcdir)/scripttempl/elf.sc ${GEN_DEPENDS}
 
+eelf_mipsel_haiku.c: $(srcdir)/emulparams/elf_mipsel_haiku.sh \
+  $(srcdir)/emultempl/elf32.em $(srcdir)/scripttempl/elf.sc ${GEN_DEPENDS}
+
 eelf_i386_vxworks.c: $(srcdir)/emulparams/elf_i386_vxworks.sh \
   $(srcdir)/emulparams/vxworks.sh $(srcdir)/emultempl/vxworks.em \
   $(ELF_DEPS) $(srcdir)/scripttempl/elf.sc ${GEN_DEPENDS}
 
-eelf_mipsel_haiku.c:  $(srcdir)/emulparams/elf_mipsel_haiku.sh \
-  $(srcdir)/emultempl/elf32.em $(srcdir)/scripttempl/elf.sc ${GEN_DEPENDS}
-
 eelf_iamcu.c: $(srcdir)/emulparams/elf_iamcu.sh \
   $(ELF_X86_DEPS) $(srcdir)/scripttempl/elf.sc ${GEN_DEPENDS}
 
@@ -3164,6 +3173,10 @@ eaarch64fbsdb.c: $(srcdir)/emulparams/aarch64fbsdb.sh $(srcdir)/emulparams/aarch
   $(ELF_DEPS) $(srcdir)/emultempl/aarch64elf.em \
   $(srcdir)/scripttempl/elf.sc ${GEN_DEPENDS}
 
+eaarch64haiku.c: $(srcdir)/emulparams/aarch64haiku.sh \
+  $(ELF_DEPS) $(srcdir)/emultempl/aarch64elf.em \
+  $(srcdir)/scripttempl/elf.sc ${GEN_DEPENDS}
+
 eaarch64linux.c: $(srcdir)/emulparams/aarch64linux.sh \
   $(ELF_DEPS) $(srcdir)/emultempl/aarch64elf.em \
   $(srcdir)/scripttempl/elf.sc ${GEN_DEPENDS}
@@ -3321,6 +3334,10 @@ ez8002.c: $(srcdir)/emulparams/z8002.sh \
 eelf32_x86_64.c: $(srcdir)/emulparams/elf32_x86_64.sh \
   $(ELF_X86_DEPS) $(srcdir)/scripttempl/elf.sc ${GEN_DEPENDS}
 
+eelf_x86_64_haiku.c: $(srcdir)/emulparams/elf_x86_64_haiku.sh \
+  $(srcdir)/emulparams/elf_x86_64.sh \
+  $(ELF_DEPS) $(srcdir)/scripttempl/elf.sc ${GEN_DEPENDS}
+
 eelf32_x86_64_nacl.c: $(srcdir)/emulparams/elf32_x86_64_nacl.sh \
   $(srcdir)/emulparams/elf32_x86_64.sh \
   $(srcdir)/emulparams/elf_nacl.sh \
@@ -3481,10 +3498,6 @@ eelf_x86_64_fbsd.c: $(srcdir)/emulparams/elf_x86_64_fbsd.sh \
   $(srcdir)/emulparams/elf_x86_64.sh \
   $(ELF_X86_DEPS) $(srcdir)/scripttempl/elf.sc ${GEN_DEPENDS}
 
-eelf_x86_64_haiku.c: $(srcdir)/emulparams/elf_x86_64_haiku.sh \
-  $(srcdir)/emulparams/elf_x86_64.sh \
-  $(ELF_DEPS) $(srcdir)/scripttempl/elf.sc ${GEN_DEPENDS}
-
 eelf_x86_64_nacl.c: $(srcdir)/emulparams/elf_x86_64_nacl.sh \
   $(srcdir)/emulparams/elf_x86_64.sh \
   $(srcdir)/emulparams/elf_nacl.sh \

binutils/ld/configure.tgt

@@ -70,6 +70,8 @@ aarch64_be-*-linux*)	targ_emul=aarch64linuxb
 aarch64-*-linux*)	targ_emul=aarch64linux
 			targ_extra_libpath="aarch64linuxb aarch64linux32 aarch64linux32b armelfb_linux_eabi armelf_linux_eabi"
 			targ_extra_emuls="aarch64elf aarch64elf32 aarch64elf32b aarch64elfb armelf armelfb $targ_extra_libpath" ;;
+aarch64-*-haiku*)	targ_emul=aarch64haiku
+			targ_extra_emuls="aarch64elf aarch64elf32 aarch64elf32b aarch64elfb armelf armelfb armelf_haiku $targ_extra_libpath" ;;
 alpha*-*-freebsd* | alpha*-*-kfreebsd*-gnu)
 			targ_emul=elf64alpha_fbsd
 			targ_extra_emuls="elf64alpha alpha"

binutils/ld/emulparams/aarch64haiku.sh

@@ -0,0 +1,39 @@
+ARCH=aarch64
+MACHINE=
+NOP=0x1f2003d5
+
+SCRIPT_NAME=elf
+ELFSIZE=64
+OUTPUT_FORMAT="elf64-littleaarch64"
+BIG_OUTPUT_FORMAT="elf64-bigaarch64"
+LITTLE_OUTPUT_FORMAT="elf64-littleaarch64"
+NO_REL_RELOCS=yes
+
+TEMPLATE_NAME=elf32
+EXTRA_EM_FILE=aarch64elf
+
+GENERATE_SHLIB_SCRIPT=yes
+GENERATE_PIE_SCRIPT=yes
+
+MAXPAGESIZE="CONSTANT (MAXPAGESIZE)"
+COMMONPAGESIZE="CONSTANT (COMMONPAGESIZE)"
+SEPARATE_GOTPLT=24
+IREL_IN_PLT=
+
+TEXT_START_ADDR=0x400000
+
+DATA_START_SYMBOLS='PROVIDE (__data_start = .);';
+
+# AArch64 does not support .s* sections.
+NO_SMALL_DATA=yes
+
+OTHER_BSS_SYMBOLS="${CREATE_SHLIB+PROVIDE (}__bss_start__ = .${CREATE_SHLIB+)};"
+OTHER_BSS_END_SYMBOLS="${CREATE_SHLIB+PROVIDE (}_bss_end__ = .${CREATE_SHLIB+)}; ${CREATE_SHLIB+PROVIDE (}__bss_end__ = .${CREATE_SHLIB+)};"
+OTHER_END_SYMBOLS="${CREATE_SHLIB+PROVIDE (}__end__ = .${CREATE_SHLIB+)};"
+
+OTHER_SECTIONS='.note.gnu.arm.ident 0 : { KEEP (*(.note.gnu.arm.ident)) }'
+ATTRS_SECTIONS='.ARM.attributes 0 : { KEEP (*(.ARM.attributes)) KEEP (*(.gnu.attributes)) }'
+# Ensure each PLT entry is aligned to a cache line.
+PLT=".plt          ${RELOCATING-0} : ALIGN(16) { *(.plt)${RELOCATING+${IREL_IN_PLT+ *(.iplt)}} }"
+
+. ${srcdir}/emulparams/elf_haiku.sh

gcc/gcc/config.gcc

@@ -993,6 +993,11 @@ aarch64*-*-freebsd*)
 	tm_file="${tm_file} aarch64/aarch64-elf.h aarch64/aarch64-freebsd.h"
 	tmake_file="${tmake_file} aarch64/t-aarch64 aarch64/t-aarch64-freebsd"
 	;;
+aarch64*-*-haiku*)
+	tm_file="${tm_file} dbxelf.h elfos.h haiku.h haiku-stdint.h"
+	tm_file="${tm_file} aarch64/aarch64-elf.h aarch64/aarch64-haiku.h"
+	tmake_file="${tmake_file} t-haiku aarch64/t-aarch64 aarch64/t-aarch64-haiku"
+	;;
 aarch64*-*-linux*)
 	tm_file="${tm_file} dbxelf.h elfos.h gnu-user.h linux.h glibc-stdint.h"
 	tm_file="${tm_file} aarch64/aarch64-elf.h aarch64/aarch64-linux.h"

gcc/gcc/config/aarch64/aarch64-haiku.h

@@ -0,0 +1,94 @@
+/* Machine description for AArch64 architecture.
+   Copyright (C) 2009-2018 Free Software Foundation, Inc.
+   Contributed by ARM Ltd.
+   Updated for Haiku by Jaroslaw Pelczar <jarek@jpelczar.com>
+
+   This file is part of GCC.
+
+   GCC 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, or (at your option)
+   any later version.
+
+   GCC 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 GCC; see the file COPYING3.  If not see
+   <http://www.gnu.org/licenses/>.  */
+
+#ifndef GCC_AARCH64_HAIKU_H
+#define GCC_AARCH64_HAIKU_H
+
+#define HAIKU_DYNAMIC_LINKER		"/system/runtime_loader"
+
+#define CPP_SPEC "%{pthread:-D_REENTRANT}"
+
+#if TARGET_BIG_ENDIAN_DEFAULT
+#define TARGET_LINKER_EMULATION  "aarch64haikub"
+#else
+#define TARGET_LINKER_EMULATION  "aarch64haiku"
+#endif
+
+#undef  SUBTARGET_EXTRA_LINK_SPEC
+#define SUBTARGET_EXTRA_LINK_SPEC " -m" TARGET_LINKER_EMULATION
+
+#undef  HAIKU_TARGET_LINK_SPEC
+#define HAIKU_TARGET_LINK_SPEC "                                 \
+    %{p:%nconsider using `-pg' instead of `-p' with gprof (1) } \
+    %{v:-V}                                                     \
+    %{assert*} %{R*} %{rpath*} %{defsym*}                       \
+    %{shared:-Bshareable %{h*} %{soname*}}                      \
+    %{symbolic:-Bsymbolic}                                      \
+    %{static:-Bstatic}                                          \
+    %{!static:                                                  \
+      %{rdynamic:-export-dynamic}                               \
+      %{!shared:-dynamic-linker " HAIKU_DYNAMIC_LINKER " }}     \
+    -X" SUBTARGET_EXTRA_LINK_SPEC "                             \
+    %{mbig-endian:-EB} %{mlittle-endian:-EL}"
+
+#if TARGET_FIX_ERR_A53_835769_DEFAULT
+#define CA53_ERR_835769_SPEC \
+  " %{!mno-fix-cortex-a53-835769:--fix-cortex-a53-835769}"
+#else
+#define CA53_ERR_835769_SPEC \
+  " %{mfix-cortex-a53-835769:--fix-cortex-a53-835769}"
+#endif
+
+#if TARGET_FIX_ERR_A53_843419_DEFAULT
+#define CA53_ERR_843419_SPEC \
+  " %{!mno-fix-cortex-a53-843419:--fix-cortex-a53-843419}"
+#else
+#define CA53_ERR_843419_SPEC \
+  " %{mfix-cortex-a53-843419:--fix-cortex-a53-843419}"
+#endif
+
+#define LINK_SPEC HAIKU_TARGET_LINK_SPEC \
+                  CA53_ERR_835769_SPEC \
+                  CA53_ERR_843419_SPEC
+
+#define TARGET_OS_CPP_BUILTINS()		\
+  do									\
+    {									\
+	builtin_define ("__HAIKU__");					\
+	builtin_define ("__stdcall=__attribute__((__stdcall__))");	\
+	builtin_define ("__cdecl=__attribute__((__cdecl__))");		\
+    builtin_define ("__STDC_ISO_10646__=201103L"); \
+	builtin_assert ("system=haiku");					\
+    }									\
+  while (0)
+
+#define TARGET_ASM_FILE_END file_end_indicate_exec_stack
+
+/* Uninitialized common symbols in non-PIE executables, even with
+   strong definitions in dependent shared libraries, will resolve
+   to COPY relocated symbol in the executable.  See PR65780.  */
+#undef TARGET_BINDS_LOCAL_P
+#define TARGET_BINDS_LOCAL_P default_binds_local_p_2
+
+/* Define this to be nonzero if static stack checking is supported.  */
+#define STACK_CHECK_STATIC_BUILTIN 1
+
+#endif  /* GCC_AARCH64_HAIKU_H */

gcc/gcc/config/aarch64/t-aarch64-haiku

@@ -0,0 +1,21 @@
+# Machine description for AArch64 architecture.
+#  Copyright (C) 2016-2018 Free Software Foundation, Inc.
+#
+#  This file is part of GCC.
+#
+#  GCC 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, or (at your option)
+#  any later version.
+#
+#  GCC 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 GCC; see the file COPYING3.  If not see
+#  <http://www.gnu.org/licenses/>.
+
+LIB1ASMSRC   = aarch64/lib1funcs.asm
+LIB1ASMFUNCS = _aarch64_sync_cache_range

gcc/libgcc/config.host

@@ -354,6 +354,11 @@ aarch64*-*-fuchsia*)
 	tmake_file="${tmake_file} ${cpu_type}/t-aarch64"
 	tmake_file="${tmake_file} ${cpu_type}/t-softfp t-softfp"
 	;;
+aarch64*-*-haiku*)
+	tmake_file="${tmake_file} ${cpu_type}/t-aarch64"
+	tmake_file="${tmake_file} ${cpu_type}/t-softfp t-softfp"
+	md_unwind_header=aarch64/haiku-unwind.h
+	;;
 aarch64*-*-linux*)
 	extra_parts="$extra_parts crtfastmath.o"
 	md_unwind_header=aarch64/linux-unwind.h

gcc/libgcc/config/aarch64/haiku-unwind.h

@@ -0,0 +1,51 @@
+/* DWARF2 EH unwinding support for FreeBSD/ARM64 (aarch64).
+   Copyright (C) 2017-2018 Free Software Foundation, Inc.
+   Contributed by John Marino <gnugcc@marino.st>
+
+This file is part of GCC.
+
+GCC 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, or (at your option)
+any later version.
+
+GCC 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.
+
+Under Section 7 of GPL version 3, you are granted additional
+permissions described in the GCC Runtime Library Exception, version
+3.1, as published by the Free Software Foundation.
+
+You should have received a copy of the GNU General Public License and
+a copy of the GCC Runtime Library Exception along with this program;
+see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
+<http://www.gnu.org/licenses/>.  */
+
+/* Identify a signal frame, and set the frame state data appropriately.
+   See unwind-dw2.c for the structs. */
+
+/* Always include AArch64 unwinder header file.  */
+#include "config/aarch64/aarch64-unwind.h"
+
+#include <sys/types.h>
+#include <signal.h>
+#include <unistd.h>
+#include <signal.h>
+
+#define REG_NAME(reg)   mc_gpregs.gp_## reg
+#define XREG(num)       mc_gpregs.gp_x[num]
+#define DARC            __LIBGCC_DWARF_ALT_FRAME_RETURN_COLUMN__
+
+#define MD_FALLBACK_FRAME_STATE_FOR aarch64_haiku_fallback_frame_state
+
+static _Unwind_Reason_Code
+aarch64_haiku_fallback_frame_state
+(struct _Unwind_Context *context, _Unwind_FrameState *fs)
+{
+  // For now just signal end of stack. Once the Haiku implementation
+  // for AArch64 is more mature we can consider writing something similar
+  // to Linux or FreeBSD support.
+  return _URC_END_OF_STACK;
+}

jam/jcache.c

@@ -112,7 +112,9 @@ new_string_list(int block_size)
 		if (block_size <= 0)
 			block_size = 5;
 		list->block_size = block_size;
-		if (!resize_string_list(list, 0)) {
+		if (resize_string_list(list, 0))
+			*list->strings = 0;
+		else {
 			free(list);
 			list = 0;
 		}