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buildscripts/dka64/patches/gcc-8.1.0.patch
Dave Murphy f9d48b38cd update gcc to 8.1.0
2018-05-11 18:49:04 +01:00

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diff -NBaur gcc-8.1.0/gcc/config/aarch64/aarch64.c gcc-8.1.0-aarch64/gcc/config/aarch64/aarch64.c
--- gcc-8.1.0/gcc/config/aarch64/aarch64.c 2018-03-15 08:55:04.000000000 +0000
+++ gcc-8.1.0-aarch64/gcc/config/aarch64/aarch64.c 2018-05-08 11:09:01.247467815 +0100
@@ -11963,8 +11963,24 @@
|| !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 -NBaur gcc-8.1.0/gcc/config/aarch64/aarch64-elf-raw.h gcc-8.1.0-aarch64/gcc/config/aarch64/aarch64-elf-raw.h
--- gcc-8.1.0/gcc/config/aarch64/aarch64-elf-raw.h 2018-01-03 10:03:58.000000000 +0000
+++ gcc-8.1.0-aarch64/gcc/config/aarch64/aarch64-elf-raw.h 2018-05-08 11:09:01.247467815 +0100
@@ -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 -NBaur gcc-8.1.0/gcc/config/aarch64/aarch64.h gcc-8.1.0-aarch64/gcc/config/aarch64/aarch64.h
--- gcc-8.1.0/gcc/config/aarch64/aarch64.h 2018-02-21 14:05:45.000000000 +0000
+++ gcc-8.1.0-aarch64/gcc/config/aarch64/aarch64.h 2018-05-08 11:09:01.255467862 +0100
@@ -957,6 +957,10 @@
/* 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 -NBaur gcc-8.1.0/gcc/config/aarch64/aarch64.md gcc-8.1.0-aarch64/gcc/config/aarch64/aarch64.md
--- gcc-8.1.0/gcc/config/aarch64/aarch64.md 2018-04-24 17:58:49.000000000 +0100
+++ gcc-8.1.0-aarch64/gcc/config/aarch64/aarch64.md 2018-05-08 11:09:01.255467862 +0100
@@ -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 -NBaur gcc-8.1.0/gcc/config/aarch64/aarch64.opt gcc-8.1.0-aarch64/gcc/config/aarch64/aarch64.opt
--- gcc-8.1.0/gcc/config/aarch64/aarch64.opt 2018-01-13 17:50:35.000000000 +0000
+++ gcc-8.1.0-aarch64/gcc/config/aarch64/aarch64.opt 2018-05-08 11:09:01.255467862 +0100
@@ -115,6 +115,20 @@
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 -NBaur gcc-8.1.0/gcc/config/aarch64/aarch64-opts.h gcc-8.1.0-aarch64/gcc/config/aarch64/aarch64-opts.h
--- gcc-8.1.0/gcc/config/aarch64/aarch64-opts.h 2018-01-13 17:50:35.000000000 +0000
+++ gcc-8.1.0-aarch64/gcc/config/aarch64/aarch64-opts.h 2018-05-08 11:09:01.255467862 +0100
@@ -48,6 +48,12 @@
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 -NBaur gcc-8.1.0/gcc/config/aarch64/t-aarch64 gcc-8.1.0-aarch64/gcc/config/aarch64/t-aarch64
--- gcc-8.1.0/gcc/config/aarch64/t-aarch64 2018-01-03 10:03:58.000000000 +0000
+++ gcc-8.1.0-aarch64/gcc/config/aarch64/t-aarch64 2018-05-08 11:09:01.255467862 +0100
@@ -68,5 +68,7 @@
$(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 -NBaur gcc-8.1.0/gcc/gcc.c gcc-8.1.0-aarch64/gcc/gcc.c
--- gcc-8.1.0/gcc/gcc.c 2018-02-09 06:44:06.000000000 +0000
+++ gcc-8.1.0-aarch64/gcc/gcc.c 2018-05-08 11:09:01.259467885 +0100
@@ -786,6 +786,11 @@
#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 *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 @@
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 -NBaur gcc-8.1.0/libgcc/crtstuff.c gcc-8.1.0-aarch64/libgcc/crtstuff.c
--- gcc-8.1.0/libgcc/crtstuff.c 2018-01-03 10:03:58.000000000 +0000
+++ gcc-8.1.0-aarch64/libgcc/crtstuff.c 2018-05-08 11:09:01.259467885 +0100
@@ -47,6 +47,7 @@
/* 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,
diff -NBaur gcc-8.1.0/libgcc/Makefile.in gcc-8.1.0-aarch64/libgcc/Makefile.in
--- gcc-8.1.0/libgcc/Makefile.in 2018-01-03 10:03:58.000000000 +0000
+++ gcc-8.1.0-aarch64/libgcc/Makefile.in 2018-05-08 11:09:01.259467885 +0100
@@ -847,7 +847,7 @@
# libgcc_eh.a, only LIB2ADDEH matters. If we do, only LIB2ADDEHSTATIC and
# LIB2ADDEHSHARED matter. (Usually all three are identical.)
-c_flags := -fexceptions
+c_flags := -fno-exceptions
ifeq ($(enable_shared),yes)
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