buildscripts/dka64/patches/gcc-8.2.0.patch

diff --git a/gcc/config.gcc b/gcc/config.gcc
index 532c33f4c2b..c8a8bc698a7 100644
--- a/gcc/config.gcc
+++ b/gcc/config.gcc
@@ -945,6 +945,7 @@ aarch64*-*-elf | aarch64*-*-fuchsia* | aarch64*-*-rtems*)
 	case $target in
 	aarch64-*-elf*)
 		use_gcc_stdint=wrap
+		tm_defines="${tm_defines}  TARGET_DEFAULT_ASYNC_UNWIND_TABLES=1"
 		;;
         aarch64-*-fuchsia*)
                 tm_file="${tm_file} fuchsia.h"
diff --git a/gcc/config/aarch64/aarch64-elf-raw.h b/gcc/config/aarch64/aarch64-elf-raw.h
index c074238df06..ef503ddd5a6 100644
--- a/gcc/config/aarch64/aarch64-elf-raw.h
+++ b/gcc/config/aarch64/aarch64-elf-raw.h
@@ -22,6 +22,7 @@
 #ifndef GCC_AARCH64_ELF_RAW_H
 #define GCC_AARCH64_ELF_RAW_H
 
+#define LINK_GCC_C_SEQUENCE_SPEC "--start-group %G %L %(libgloss) --end-group"
 #define STARTFILE_SPEC " crti%O%s crtbegin%O%s crt0%O%s"
 #define ENDFILE_SPEC \
   " crtend%O%s crtn%O%s " \
diff --git a/gcc/config/aarch64/aarch64-opts.h b/gcc/config/aarch64/aarch64-opts.h
index 7a5c6d7664f..687793841de 100644
--- a/gcc/config/aarch64/aarch64-opts.h
+++ b/gcc/config/aarch64/aarch64-opts.h
@@ -48,6 +48,12 @@ enum aarch64_tls_type {
   TLS_DESCRIPTORS
 };
 
+/* Which thread pointer access sequence to use.  */
+enum aarch64_tp_type {
+  TP_HARD,
+  TP_SOFT
+};
+
 /* The code model defines the address generation strategy.
    Most have a PIC and non-PIC variant.  */
 enum aarch64_code_model {
diff --git a/gcc/config/aarch64/aarch64.c b/gcc/config/aarch64/aarch64.c
index 175f13dc264..733ab473cbd 100644
--- a/gcc/config/aarch64/aarch64.c
+++ b/gcc/config/aarch64/aarch64.c
@@ -11979,8 +11979,24 @@ aarch64_load_tp (rtx target)
       || !register_operand (target, Pmode))
     target = gen_reg_rtx (Pmode);
 
-  /* Can return in any reg.  */
-  emit_insn (gen_aarch64_load_tp_hard (target));
+  if (TARGET_HARD_TP)
+    {
+      /* Can return in any reg.  */
+      emit_insn (gen_aarch64_load_tp_hard (target));
+    }
+  else
+    {
+      /* Always returned in r0.  Immediately copy the result into a pseudo,
+	 otherwise other uses of r0 (e.g. setting up function arguments) may
+	 clobber the value.  */
+
+      rtx tmp;
+
+      emit_insn (gen_aarch64_load_tp_soft ());
+
+      tmp = gen_rtx_REG (DImode, R0_REGNUM);
+      emit_move_insn (target, tmp);
+    }
   return target;
 }
 
diff --git a/gcc/config/aarch64/aarch64.h b/gcc/config/aarch64/aarch64.h
index 976f9afae54..73263bcb5e7 100644
--- a/gcc/config/aarch64/aarch64.h
+++ b/gcc/config/aarch64/aarch64.h
@@ -957,6 +957,10 @@ typedef struct
 /* Check TLS Descriptors mechanism is selected.  */
 #define TARGET_TLS_DESC (aarch64_tls_dialect == TLS_DESCRIPTORS)
 
+/* Check selected thread pointer access sequence to use.  */
+#define TARGET_HARD_TP (target_thread_pointer == TP_HARD)
+#define TARGET_SOFT_TP (target_thread_pointer == TP_SOFT)
+
 extern enum aarch64_code_model aarch64_cmodel;
 
 /* When using the tiny addressing model conditional and unconditional branches
diff --git a/gcc/config/aarch64/aarch64.md b/gcc/config/aarch64/aarch64.md
index 32a0e1f3685..783c655acf0 100644
--- a/gcc/config/aarch64/aarch64.md
+++ b/gcc/config/aarch64/aarch64.md
@@ -5693,11 +5693,22 @@
 (define_insn "aarch64_load_tp_hard"
   [(set (match_operand:DI 0 "register_operand" "=r")
 	(unspec:DI [(const_int 0)] UNSPEC_TLS))]
-  ""
-  "mrs\\t%0, tpidr_el0"
+  "TARGET_HARD_TP"
+  "mrs\\t%0, tpidr_el0\\t// aarch64_load_tp_hard"
   [(set_attr "type" "mrs")]
 )
 
+(define_insn "aarch64_load_tp_soft"
+  [(set (reg:DI 0) (unspec:DI [(const_int 0)] UNSPEC_TLS))
+   (clobber (reg:DI IP0_REGNUM))
+   (clobber (reg:DI IP1_REGNUM))
+   (clobber (reg:DI LR_REGNUM))
+   (clobber (reg:CC CC_REGNUM))]
+  "TARGET_SOFT_TP"
+  "bl\\t__aarch64_read_tp\\t// aarch64_load_tp_soft"
+  [(set_attr "type" "branch")]
+)
+
 ;; The TLS ABI specifically requires that the compiler does not schedule
 ;; instructions in the TLS stubs, in order to enable linker relaxation.
 ;; Therefore we treat the stubs as an atomic sequence.
diff --git a/gcc/config/aarch64/aarch64.opt b/gcc/config/aarch64/aarch64.opt
index 52eaf8c6f40..52bccddc6e3 100644
--- a/gcc/config/aarch64/aarch64.opt
+++ b/gcc/config/aarch64/aarch64.opt
@@ -115,6 +115,20 @@ Enum(aarch64_tls_size) String(32) Value(32)
 EnumValue
 Enum(aarch64_tls_size) String(48) Value(48)
 
+mtp=
+Target RejectNegative Joined Enum(aarch64_tp_type) Var(target_thread_pointer) Init(TP_HARD)
+Specify how to access the thread pointer.
+
+Enum
+Name(aarch64_tp_type) Type(enum aarch64_tp_type)
+Valid arguments to -mtp=:
+
+EnumValue
+Enum(aarch64_tp_type) String(hard) Value(TP_HARD)
+
+EnumValue
+Enum(aarch64_tp_type) String(soft) Value(TP_SOFT)
+
 march=
 Target RejectNegative ToLower Joined Var(aarch64_arch_string)
 -march=ARCH	Use features of architecture ARCH.
diff --git a/gcc/config/aarch64/t-aarch64 b/gcc/config/aarch64/t-aarch64
index 0be1f0d63aa..a54068bfd96 100644
--- a/gcc/config/aarch64/t-aarch64
+++ b/gcc/config/aarch64/t-aarch64
@@ -68,5 +68,7 @@ cortex-a57-fma-steering.o: $(srcdir)/config/aarch64/cortex-a57-fma-steering.c \
 		$(srcdir)/config/aarch64/cortex-a57-fma-steering.c
 
 comma=,
-MULTILIB_OPTIONS    = $(subst $(comma),/, $(patsubst %, mabi=%, $(subst $(comma),$(comma)mabi=,$(TM_MULTILIB_CONFIG))))
-MULTILIB_DIRNAMES   = $(subst $(comma), ,$(TM_MULTILIB_CONFIG))
+MULTILIB_OPTIONS    = mcmodel=large fPIC
+MULTILIB_DIRNAMES   = large pic
+MULTILIB_REQUIRED   = mcmodel=large fPIC
+MULTILIB_MATCHES    = fPIC=fpic fPIC=fpie fPIC=fPIE
diff --git a/gcc/gcc.c b/gcc/gcc.c
index a716f708259..6a11011dba7 100644
--- a/gcc/gcc.c
+++ b/gcc/gcc.c
@@ -786,6 +786,11 @@ proper position among the other output files.  */
 #endif
 #endif
 
+#ifndef LIBGLOSS_SPEC
+# define LIBGLOSS_SPEC "-lsysbase"
+#endif
+
+
 /* config.h can define STARTFILE_SPEC to override the default crt0 files.  */
 #ifndef STARTFILE_SPEC
 #define STARTFILE_SPEC  \
@@ -1081,6 +1086,7 @@ static const char *link_spec = LINK_SPEC;
 static const char *lib_spec = LIB_SPEC;
 static const char *link_gomp_spec = "";
 static const char *libgcc_spec = LIBGCC_SPEC;
+static const char *libgloss_spec = LIBGLOSS_SPEC;
 static const char *endfile_spec = ENDFILE_SPEC;
 static const char *startfile_spec = STARTFILE_SPEC;
 static const char *linker_name_spec = LINKER_NAME;
@@ -1577,6 +1583,7 @@ static struct spec_list static_specs[] =
   INIT_STATIC_SPEC ("lib",			&lib_spec),
   INIT_STATIC_SPEC ("link_gomp",		&link_gomp_spec),
   INIT_STATIC_SPEC ("libgcc",			&libgcc_spec),
+  INIT_STATIC_SPEC ("libgloss",			&libgloss_spec),
   INIT_STATIC_SPEC ("startfile",		&startfile_spec),
   INIT_STATIC_SPEC ("cross_compile",		&cross_compile),
   INIT_STATIC_SPEC ("version",			&compiler_version),
diff --git a/libgcc/crtstuff.c b/libgcc/crtstuff.c
index 5e894455e16..f2347455de0 100644
--- a/libgcc/crtstuff.c
+++ b/libgcc/crtstuff.c
@@ -47,6 +47,7 @@ see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
 
 /* Target machine header files require this define. */
 #define IN_LIBGCC2
+#define USED_FOR_TARGET
 
 /* FIXME: Including auto-host is incorrect, but until we have
    identified the set of defines that need to go into auto-target.h,