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[NDS32] Support Linux target for nds32.

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gcc/
	* config.gcc (nds32*): Use nds32-linux.opt and nds32-elf.opt.
	(nds32le-*-*, nds32be-*-*): Integrate checking process.
	(nds32*-*-*): Add glibc and uclibc conditions.
	* common/config/nds32/nds32-common.c (nds32_except_unwind_info): New.
	(TARGET_EXCEPT_UNWIND_INFO): Define.
	* config/nds32/elf.h: New file.
	* config/nds32/linux.h: New file.
	* config/nds32/nds32-elf.opt: New file.
	* config/nds32/nds32-linux.opt: New file.
	* config/nds32/nds32-fp-as-gp.c
	(pass_nds32_fp_as_gp::gate): Consider TARGET_LINUX_ABI.
	* config/nds32/nds32.c (nds32_conditional_register_usage): Consider
	TARGET_LINUX_ABI.
	(nds32_asm_file_end): Ditto.
	(nds32_print_operand): Ditto.
	(nds32_insert_attributes): Ditto.
	(nds32_init_libfuncs): New function.
	(TARGET_HAVE_TLS): Define.
	(TARGET_INIT_LIBFUNCS): Define.
	* config/nds32/nds32.h (TARGET_DEFAULT_RELAX): Apply different relax
	spec content.
	(TARGET_ELF): Apply different mcmodel setting.
	(LINK_SPEC, LIB_SPEC, STARTFILE_SPEC, ENDFILE_SPEC): The content has
	been migrated into elf.h and linux.h files.
	* config/nds32/nds32.md (add_pc): Consider TARGET_LINUX_ABI.
	* config/nds32/nds32.opt (mvh): Consider TARGET_LINUX_ABI.
	(mcmodel): The content has been migrated into nds32-elf.opt and
	nds32-linux.opt files.
	* config/nds32/t-elf: New file.
	* config/nds32/t-linux: New file.

libgcc/
	* config.host (nds32*-linux*): New.
	* config/nds32/linux-atomic.c: New file.
	* config/nds32/linux-unwind.h: New file.

Co-Authored-By: Kito Cheng <kito.cheng@gmail.com>
Co-Authored-By: Monk Chiang <sh.chiang04@gmail.com>

From-SVN: r261116
This commit is contained in:
Chung-Ju Wu 2018-06-02 14:22:12 +00:00 • committed by Chung-Ju Wu
parent 2140297cb3
commit cf3cd43d5a
18 changed files with 876 additions and 72 deletions
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34
gcc/ChangeLog
View file

@ -1,3 +1,37 @@
2018-06-02 Chung-Ju Wu <jasonwucj@gmail.com>
Kito Cheng <kito.cheng@gmail.com>
* config.gcc (nds32*): Use nds32-linux.opt and nds32-elf.opt.
(nds32le-*-*, nds32be-*-*): Integrate checking process.
(nds32*-*-*): Add glibc and uclibc conditions.
* common/config/nds32/nds32-common.c (nds32_except_unwind_info): New.
(TARGET_EXCEPT_UNWIND_INFO): Define.
* config/nds32/elf.h: New file.
* config/nds32/linux.h: New file.
* config/nds32/nds32-elf.opt: New file.
* config/nds32/nds32-linux.opt: New file.
* config/nds32/nds32-fp-as-gp.c
(pass_nds32_fp_as_gp::gate): Consider TARGET_LINUX_ABI.
* config/nds32/nds32.c (nds32_conditional_register_usage): Consider
TARGET_LINUX_ABI.
(nds32_asm_file_end): Ditto.
(nds32_print_operand): Ditto.
(nds32_insert_attributes): Ditto.
(nds32_init_libfuncs): New function.
(TARGET_HAVE_TLS): Define.
(TARGET_INIT_LIBFUNCS): Define.
* config/nds32/nds32.h (TARGET_DEFAULT_RELAX): Apply different relax
spec content.
(TARGET_ELF): Apply different mcmodel setting.
(LINK_SPEC, LIB_SPEC, STARTFILE_SPEC, ENDFILE_SPEC): The content has
been migrated into elf.h and linux.h files.
* config/nds32/nds32.md (add_pc): Consider TARGET_LINUX_ABI.
* config/nds32/nds32.opt (mvh): Consider TARGET_LINUX_ABI.
(mcmodel): The content has been migrated into nds32-elf.opt and
nds32-linux.opt files.
* config/nds32/t-elf: New file.
* config/nds32/t-linux: New file.
2018-06-02 Chung-Ju Wu <jasonwucj@gmail.com>
Shiva Chen <shiva0217@gmail.com>

15
gcc/common/config/nds32/nds32-common.c
View file

@ -87,6 +87,19 @@ static const struct default_options nds32_option_optimization_table[] =
};
/* ------------------------------------------------------------------------ */
/* Implement TARGET_EXCEPT_UNWIND_INFO. */
static enum unwind_info_type
nds32_except_unwind_info (struct gcc_options *opts ATTRIBUTE_UNUSED)
{
if (TARGET_LINUX_ABI)
return UI_DWARF2;
return UI_SJLJ;
}
/* ------------------------------------------------------------------------ */
/* Run-time Target Specification. */
@ -127,7 +140,7 @@ static const struct default_options nds32_option_optimization_table[] =
/* Defining the Output Assembler Language. */
#undef TARGET_EXCEPT_UNWIND_INFO
#define TARGET_EXCEPT_UNWIND_INFO sjlj_except_unwind_info
#define TARGET_EXCEPT_UNWIND_INFO nds32_except_unwind_info
/* ------------------------------------------------------------------------ */

59
gcc/config.gcc
View file

@ -448,6 +448,16 @@ mips*-*-*)
nds32*)
cpu_type=nds32
extra_headers="nds32_intrinsic.h"
case ${target} in
nds32*-*-linux*)
extra_options="${extra_options} nds32/nds32-linux.opt"
;;
nds32*-*-elf*)
extra_options="${extra_options} nds32/nds32-elf.opt"
;;
*)
;;
esac
extra_objs="nds32-cost.o nds32-intrinsic.o nds32-isr.o nds32-md-auxiliary.o nds32-pipelines-auxiliary.o nds32-predicates.o nds32-memory-manipulation.o nds32-fp-as-gp.o nds32-relax-opt.o nds32-utils.o"
;;
nios2-*-*)
@ -2335,18 +2345,32 @@ msp430*-*-*)
tmake_file="${tmake_file} msp430/t-msp430"
extra_gcc_objs="driver-msp430.o"
;;
nds32le-*-*)
nds32*-*-*)
target_cpu_default="0"
tm_defines="${tm_defines}"
tm_file="dbxelf.h elfos.h newlib-stdint.h ${tm_file} nds32/nds32_intrinsic.h"
tmake_file="nds32/t-nds32 nds32/t-mlibs"
;;
nds32be-*-*)
target_cpu_default="0|MASK_BIG_ENDIAN"
tm_defines="${tm_defines} TARGET_BIG_ENDIAN_DEFAULT=1"
tm_file="dbxelf.h elfos.h newlib-stdint.h ${tm_file} nds32/nds32_intrinsic.h"
tmake_file="nds32/t-nds32 nds32/t-mlibs"
case ${target} in
nds32le*-*-*)
;;
nds32be-*-*)
target_cpu_default="${target_cpu_default}|MASK_BIG_ENDIAN"
tm_defines="${tm_defines} TARGET_BIG_ENDIAN_DEFAULT=1"
;;
esac
case ${target} in
nds32*-*-elf*)
tm_file="dbxelf.h elfos.h newlib-stdint.h ${tm_file} nds32/elf.h nds32/nds32_intrinsic.h"
tmake_file="nds32/t-nds32 nds32/t-elf"
;;
nds32*-*-linux*)
tm_file="dbxelf.h elfos.h ${tm_file} gnu-user.h linux.h glibc-stdint.h nds32/linux.h nds32/nds32_intrinsic.h"
tmake_file="${tmake_file} nds32/t-nds32 nds32/t-linux"
;;
esac
# Handle --enable-default-relax setting.
if test x${enable_default_relax} = xyes; then
tm_defines="${tm_defines} TARGET_DEFAULT_RELAX=1"
fi
# Handle --with-ext-dsp
if test x${with_ext_dsp} = xyes; then
tm_defines="${tm_defines} TARGET_DEFAULT_EXT_DSP=1"
@ -4383,15 +4407,30 @@ case "${target}" in
"")
# the default library is newlib
with_nds32_lib=newlib
tm_defines="${tm_defines} TARGET_DEFAULT_CTOR_DTOR=1"
;;
newlib)
# OK
tm_defines="${tm_defines} TARGET_DEFAULT_CTOR_DTOR=1"
;;
mculib)
# OK
# for the arch=v3f or arch=v3s under mculib toolchain,
# we would like to set -fno-math-errno as default
case "${with_arch}" in
v3f | v3s)
tm_defines="${tm_defines} TARGET_DEFAULT_NO_MATH_ERRNO=1"
;;
esac
;;
glibc)
# OK
tm_defines="${tm_defines} TARGET_DEFAULT_TLSDESC_TRAMPOLINE=1"
;;
uclibc)
;;
*)
echo "Cannot accept --with-nds32-lib=$with_nds32_lib, available values are: newlib mculib" 1>&2
echo "Cannot accept --with-nds32-lib=$with_nds32_lib, available values are: newlib mculib glibc uclibc" 1>&2
exit 1
;;
esac

81
gcc/config/nds32/elf.h Normal file
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@ -0,0 +1,81 @@
/* Definitions of target machine of Andes NDS32 cpu for GNU compiler
Copyright (C) 2012-2014 Free Software Foundation, Inc.
Contributed by Andes Technology Corporation.
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/>. */
/* ------------------------------------------------------------------------ */
#define TARGET_LINUX_ABI 0
/* In the configure stage we may use options --enable-default-relax,
--enable-Os-default-ifc and --enable-Os-default-ex9. They effect
the default spec of passing --relax, --mifc, and --mex9 to linker.
We use NDS32_RELAX_SPEC, NDS32_IFC_SPEC, and NDS32_EX9_SPEC
so that we can customize them conveniently. */
#define LINK_SPEC \
" %{G*}" \
" %{mbig-endian:-EB} %{mlittle-endian:-EL}" \
" %{shared:-shared}" \
NDS32_RELAX_SPEC
#define LIB_SPEC \
" -lc -lgloss"
#define LIBGCC_SPEC \
" -lgcc"
/* The option -mno-ctor-dtor can disable constructor/destructor feature
by applying different crt stuff. In the convention, crt0.o is the
startup file without constructor/destructor;
crt1.o, crti.o, crtbegin.o, crtend.o, and crtn.o are the
startup files with constructor/destructor.
Note that crt0.o, crt1.o, crti.o, and crtn.o are provided
by newlib/mculib/glibc/ublic, while crtbegin.o and crtend.o are
currently provided by GCC for nds32 target.
For nds32 target so far:
If -mno-ctor-dtor, we are going to link
"crt0.o [user objects]".
If -mctor-dtor, we are going to link
"crt1.o crtbegin1.o [user objects] crtend1.o".
Note that the TARGET_DEFAULT_CTOR_DTOR would effect the
default behavior. Check gcc/config.gcc for more information. */
#ifdef TARGET_DEFAULT_CTOR_DTOR
#define STARTFILE_SPEC \
" %{!mno-ctor-dtor:crt1.o%s;:crt0.o%s}" \
" %{!mno-ctor-dtor:crtbegin1.o%s}" \
" %{mcrt-arg:crtarg.o%s}"
#define ENDFILE_SPEC \
" %{!mno-ctor-dtor:crtend1.o%s}"
#else
#define STARTFILE_SPEC \
" %{mctor-dtor|coverage:crt1.o%s;:crt0.o%s}" \
" %{mctor-dtor|coverage:crtbegin1.o%s}" \
" %{mcrt-arg:crtarg.o%s}"
#define ENDFILE_SPEC \
" %{mctor-dtor|coverage:crtend1.o%s}"
#endif
#define STARTFILE_CXX_SPEC \
" %{!mno-ctor-dtor:crt1.o%s;:crt0.o%s}" \
" %{!mno-ctor-dtor:crtbegin1.o%s}" \
" %{mcrt-arg:crtarg.o%s}"
#define ENDFILE_CXX_SPEC \
" %{!mno-ctor-dtor:crtend1.o%s}"

77
gcc/config/nds32/linux.h Normal file
View file

@ -0,0 +1,77 @@
/* Definitions of target machine of Andes NDS32 cpu for GNU compiler
Copyright (C) 2012-2014 Free Software Foundation, Inc.
Contributed by Andes Technology Corporation.
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/>. */
/* ------------------------------------------------------------------------ */
#define TARGET_LINUX_ABI 1
#undef SIZE_TYPE
#define SIZE_TYPE "unsigned int"
#undef PTRDIFF_TYPE
#define PTRDIFF_TYPE "int"
#ifdef TARGET_DEFAULT_TLSDESC_TRAMPOLINE
#define NDS32_TLSDESC_TRAMPOLINE_SPEC \
" %{!mno-tlsdesc-trampoline:--mtlsdesc-trampoline}"
#else
#define NDS32_TLSDESC_TRAMPOLINE_SPEC ""
#endif
#define TARGET_OS_CPP_BUILTINS() \
do \
{ \
GNU_USER_TARGET_OS_CPP_BUILTINS(); \
} \
while (0)
#define GLIBC_DYNAMIC_LINKER "/lib/ld.so.1"
/* In the configure stage we may use options --enable-default-relax,
--enable-Os-default-ifc and --enable-Os-default-ex9. They effect
the default spec of passing --relax, --mifc, and --mex9 to linker.
We use NDS32_RELAX_SPEC, NDS32_IFC_SPEC, and NDS32_EX9_SPEC
so that we can customize them conveniently. */
#define LINK_SPEC \
" %{G*}" \
" %{mbig-endian:-EB} %{mlittle-endian:-EL}" \
" %{shared:-shared} \
%{!shared: \
%{!static: \
%{rdynamic:-export-dynamic} \
-dynamic-linker " GNU_USER_DYNAMIC_LINKER "} \
%{static:-static}}" \
NDS32_RELAX_SPEC \
NDS32_TLSDESC_TRAMPOLINE_SPEC
#define LINK_PIE_SPEC "%{pie:%{!fno-pie:%{!fno-PIE:%{!static:-pie}}}} "
#define CPP_SPEC "%{pthread:-D_REENTRANT}"
/* The SYNC operations are implemented as library functions, not
INSN patterns. As a result, the HAVE defines for the patterns are
not defined. We need to define them to generate the corresponding
__GCC_HAVE_SYNC_COMPARE_AND_SWAP_* and __GCC_ATOMIC_*_LOCK_FREE
defines.
Ref: https://sourceware.org/ml/libc-alpha/2014-09/msg00322.html */
#define HAVE_sync_compare_and_swapqi 1
#define HAVE_sync_compare_and_swaphi 1
#define HAVE_sync_compare_and_swapsi 1

16
gcc/config/nds32/nds32-elf.opt Normal file
View file

@ -0,0 +1,16 @@
mcmodel=
Target RejectNegative Joined Enum(nds32_cmodel_type) Var(nds32_cmodel_option) Init(CMODEL_MEDIUM)
Specify the address generation strategy for code model.
Enum
Name(nds32_cmodel_type) Type(enum nds32_cmodel_type)
Known cmodel types (for use with the -mcmodel= option):
EnumValue
Enum(nds32_cmodel_type) String(small) Value(CMODEL_SMALL)
EnumValue
Enum(nds32_cmodel_type) String(medium) Value(CMODEL_MEDIUM)
EnumValue
Enum(nds32_cmodel_type) String(large) Value(CMODEL_LARGE)

3
gcc/config/nds32/nds32-fp-as-gp.c
View file

@ -265,7 +265,8 @@ public:
/* opt_pass methods: */
bool gate (function *)
{
return TARGET_16_BIT
return !TARGET_LINUX_ABI
&& TARGET_16_BIT
&& optimize_size;
}
unsigned int execute (function *) { return nds32_fp_as_gp (); }

16
gcc/config/nds32/nds32-linux.opt Normal file
View file

@ -0,0 +1,16 @@
mcmodel=
Target RejectNegative Joined Enum(nds32_cmodel_type) Var(nds32_cmodel_option) Init(CMODEL_LARGE)
Specify the address generation strategy for code model.
Enum
Name(nds32_cmodel_type) Type(enum nds32_cmodel_type)
Known cmodel types (for use with the -mcmodel= option):
EnumValue
Enum(nds32_cmodel_type) String(small) Value(CMODEL_SMALL)
EnumValue
Enum(nds32_cmodel_type) String(medium) Value(CMODEL_MEDIUM)
EnumValue
Enum(nds32_cmodel_type) String(large) Value(CMODEL_LARGE)

52
gcc/config/nds32/nds32.c
View file

@ -1698,6 +1698,9 @@ nds32_conditional_register_usage (void)
{
int regno;
if (TARGET_LINUX_ABI)
fixed_regs[TP_REGNUM] = 1;
if (TARGET_HARD_FLOAT)
{
for (regno = NDS32_FIRST_FPR_REGNUM;
@ -3120,21 +3123,30 @@ nds32_asm_file_start (void)
fprintf (asm_out_file, "\t! This asm file is generated by compiler\n");
fprintf (asm_out_file, "\t.flag\tverbatim\n");
if (TARGET_ICT_MODEL_LARGE)
fprintf (asm_out_file, "\t.ict_model\tlarge\n");
else
fprintf (asm_out_file, "\t.ict_model\tsmall\n");
/* Give assembler the size of each vector for interrupt handler. */
fprintf (asm_out_file, "\t! This vector size directive is required "
"for checking inconsistency on interrupt handler\n");
fprintf (asm_out_file, "\t.vec_size\t%d\n", nds32_isr_vector_size);
/* Insert directive for linker to distinguish object's ict flag. */
if (!TARGET_LINUX_ABI)
{
if (TARGET_ICT_MODEL_LARGE)
fprintf (asm_out_file, "\t.ict_model\tlarge\n");
else
fprintf (asm_out_file, "\t.ict_model\tsmall\n");
}
/* We need to provide the size of each vector for interrupt handler
under elf toolchain. */
if (!TARGET_LINUX_ABI)
{
fprintf (asm_out_file, "\t! This vector size directive is required "
"for checking inconsistency on interrupt handler\n");
fprintf (asm_out_file, "\t.vec_size\t%d\n", nds32_isr_vector_size);
}
/* If user enables '-mforce-fp-as-gp' or compiles programs with -Os,
the compiler may produce 'la $fp,_FP_BASE_' instruction
at prologue for fp-as-gp optimization.
We should emit weak reference of _FP_BASE_ to avoid undefined reference
in case user does not pass '--relax' option to linker. */
if (TARGET_FORCE_FP_AS_GP || optimize_size)
if (!TARGET_LINUX_ABI && (TARGET_FORCE_FP_AS_GP || optimize_size))
{
fprintf (asm_out_file, "\t! This weak reference is required to do "
"fp-as-gp link time optimization\n");
@ -3270,6 +3282,11 @@ nds32_asm_file_end (void)
{
nds32_asm_file_end_for_isr ();
/* The NDS32 Linux stack is mapped non-executable by default, so add a
.note.GNU-stack section. */
if (TARGET_LINUX_ABI)
file_end_indicate_exec_stack ();
fprintf (asm_out_file, "\t! ------------------------------------\n");
}
@ -3497,7 +3514,7 @@ nds32_print_operand (FILE *stream, rtx x, int code)
case SYMBOL_REF:
output_addr_const (stream, x);
if (nds32_indirect_call_referenced_p (x))
if (!TARGET_LINUX_ABI && nds32_indirect_call_referenced_p (x))
fprintf (stream, "@ICT");
break;
@ -3912,6 +3929,9 @@ nds32_insert_attributes (tree decl, tree *attributes)
{
tree new_attrs = *attributes;
if (TARGET_LINUX_ABI)
error("cannot use indirect_call attribute under linux toolchain");
if (lookup_attribute ("noinline", new_attrs) == NULL)
new_attrs = tree_cons (get_identifier ("noinline"), NULL, new_attrs);
if (lookup_attribute ("noclone", new_attrs) == NULL)
@ -4166,6 +4186,13 @@ nds32_expand_builtin (tree exp,
return nds32_expand_builtin_impl (exp, target, subtarget, mode, ignore);
}
/* Implement TARGET_INIT_LIBFUNCS. */
static void
nds32_init_libfuncs (void)
{
if (TARGET_LINUX_ABI)
init_sync_libfuncs (UNITS_PER_WORD);
}
/* ------------------------------------------------------------------------ */
@ -5758,6 +5785,9 @@ nds32_use_blocks_for_constant_p (machine_mode mode,
/* Emulating TLS. */
#undef TARGET_HAVE_TLS
#define TARGET_HAVE_TLS TARGET_LINUX_ABI
/* Defining coprocessor specifics for MIPS targets. */
@ -5785,6 +5815,8 @@ nds32_use_blocks_for_constant_p (machine_mode mode,
#undef TARGET_EXPAND_BUILTIN
#define TARGET_EXPAND_BUILTIN nds32_expand_builtin
#undef TARGET_INIT_LIBFUNCS
#define TARGET_INIT_LIBFUNCS nds32_init_libfuncs
#undef TARGET_USE_BLOCKS_FOR_CONSTANT_P
#define TARGET_USE_BLOCKS_FOR_CONSTANT_P nds32_use_blocks_for_constant_p

44
gcc/config/nds32/nds32.h
View file

@ -922,6 +922,14 @@ enum nds32_builtins
#define TARGET_CONFIG_FPU_DEFAULT NDS32_CONFIG_FPU_2
/* ------------------------------------------------------------------------ */
#ifdef TARGET_DEFAULT_RELAX
# define NDS32_RELAX_SPEC " %{!mno-relax:--relax}"
#else
# define NDS32_RELAX_SPEC " %{mrelax:--relax}"
#endif
#ifdef TARGET_DEFAULT_EXT_DSP
# define NDS32_EXT_DSP_SPEC " %{!mno-ext-dsp:-mext-dsp}"
#else
@ -963,34 +971,6 @@ enum nds32_builtins
" %{mext-dsp:-mdsp-ext}" \
" %{O|O1|O2|O3|Ofast:-O1;:-Os}"
/* If user issues -mrelax, we need to pass '--relax' to linker. */
#define LINK_SPEC \
" %{mbig-endian:-EB} %{mlittle-endian:-EL}" \
" %{mrelax:--relax}"
#define LIB_SPEC \
" -lc -lgloss"
/* The option -mno-ctor-dtor can disable constructor/destructor feature
by applying different crt stuff. In the convention, crt0.o is the
startup file without constructor/destructor;
crt1.o, crti.o, crtbegin.o, crtend.o, and crtn.o are the
startup files with constructor/destructor.
Note that crt0.o, crt1.o, crti.o, and crtn.o are provided
by newlib/mculib/glibc/ublic, while crtbegin.o and crtend.o are
currently provided by GCC for nds32 target.
For nds32 target so far:
If -mno-ctor-dtor, we are going to link
"crt0.o [user objects]".
If general cases, we are going to link
"crt1.o crtbegin1.o [user objects] crtend1.o". */
#define STARTFILE_SPEC \
" %{!mno-ctor-dtor:crt1.o%s;:crt0.o%s}" \
" %{!mno-ctor-dtor:crtbegin1.o%s}"
#define ENDFILE_SPEC \
" %{!mno-ctor-dtor:crtend1.o%s}"
/* The TARGET_BIG_ENDIAN_DEFAULT is defined if we
configure gcc with --target=nds32be-* setting.
Check gcc/config.gcc for more information. */
@ -1000,9 +980,11 @@ enum nds32_builtins
# define NDS32_ENDIAN_DEFAULT "mlittle-endian"
#endif
/* Currently we only have elf toolchain,
where -mcmodel=medium is always the default. */
#define NDS32_CMODEL_DEFAULT "mcmodel=medium"
#if TARGET_ELF
# define NDS32_CMODEL_DEFAULT "mcmodel=medium"
#else
# define NDS32_CMODEL_DEFAULT "mcmodel=large"
#endif
#define MULTILIB_DEFAULTS \
{ NDS32_ENDIAN_DEFAULT, NDS32_CMODEL_DEFAULT }

2
gcc/config/nds32/nds32.md
View file

@ -2221,7 +2221,7 @@
[(set (match_operand:SI 0 "register_operand" "=r")
(plus:SI (match_operand:SI 1 "register_operand" "0")
(pc)))]
"flag_pic"
"TARGET_LINUX_ABI || flag_pic"
"add5.pc\t%0"
[(set_attr "type" "alu")
(set_attr "length" "4")]

19
gcc/config/nds32/nds32.opt
View file

@ -151,7 +151,7 @@ Target Report Mask(RELAX_HINT)
Insert relax hint for linker to do relaxation.
mvh
Target Report Mask(VH)
Target Report Mask(VH) Condition(!TARGET_LINUX_ABI)
Enable Virtual Hosting support.
misr-vector-size=
@ -185,23 +185,6 @@ Enum(nds32_arch_type) String(v3f) Value(ARCH_V3F)
EnumValue
Enum(nds32_arch_type) String(v3s) Value(ARCH_V3S)
mcmodel=
Target RejectNegative Joined Enum(nds32_cmodel_type) Var(nds32_cmodel_option) Init(CMODEL_LARGE)
Specify the address generation strategy for code model.
Enum
Name(nds32_cmodel_type) Type(enum nds32_cmodel_type)
Known cmodel types (for use with the -mcmodel= option):
EnumValue
Enum(nds32_cmodel_type) String(small) Value(CMODEL_SMALL)
EnumValue
Enum(nds32_cmodel_type) String(medium) Value(CMODEL_MEDIUM)
EnumValue
Enum(nds32_cmodel_type) String(large) Value(CMODEL_LARGE)
mcpu=
Target RejectNegative Joined Enum(nds32_cpu_type) Var(nds32_cpu_option) Init(CPU_N9)
Specify the cpu for pipeline model.

42
gcc/config/nds32/t-elf Normal file
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@ -0,0 +1,42 @@
# The multilib settings of Andes NDS32 cpu for GNU compiler
# Copyright (C) 2012-2018 Free Software Foundation, Inc.
# Contributed by Andes Technology Corporation.
#
# 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/>.
# We also define a macro MULTILIB_DEFAULTS in nds32.h that tells the
# driver program which options are defaults for this target and thus
# do not need to be handled specially.
MULTILIB_OPTIONS += mcmodel=small/mcmodel=medium/mcmodel=large mvh
ifneq ($(filter graywolf,$(TM_MULTILIB_CONFIG)),)
MULTILIB_OPTIONS += mcpu=graywolf
endif
ifneq ($(filter dsp,$(TM_MULTILIB_CONFIG)),)
MULTILIB_OPTIONS += mext-dsp
endif
ifneq ($(filter zol,$(TM_MULTILIB_CONFIG)),)
MULTILIB_OPTIONS += mext-zol
endif
ifneq ($(filter v3m+,$(TM_MULTILIB_CONFIG)),)
MULTILIB_OPTIONS += march=v3m+
endif
# ------------------------------------------------------------------------

26
gcc/config/nds32/t-linux Normal file
View file

@ -0,0 +1,26 @@
# The multilib settings of Andes NDS32 cpu for GNU compiler
# Copyright (C) 2012-2018 Free Software Foundation, Inc.
# Contributed by Andes Technology Corporation.
#
# 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/>.
# We also define a macro MULTILIB_DEFAULTS in nds32.h that tells the
# driver program which options are defaults for this target and thus
# do not need to be handled specially.
MULTILIB_OPTIONS +=
# ------------------------------------------------------------------------

7
libgcc/ChangeLog
View file

@ -1,3 +1,10 @@
2018-06-02 Chung-Ju Wu <jasonwucj@gmail.com>
Monk Chiang <sh.chiang04@gmail.com>
* config.host (nds32*-linux*): New.
* config/nds32/linux-atomic.c: New file.
* config/nds32/linux-unwind.h: New file.
2018-05-31 Uros Bizjak <ubizjak@gmail.com>
PR target/85591

17
libgcc/config.host
View file

@ -979,6 +979,23 @@ msp430*-*-elf)
tmake_file="$tm_file t-crtstuff t-fdpbit msp430/t-msp430"
extra_parts="$extra_parts libmul_none.a libmul_16.a libmul_32.a libmul_f5.a"
;;
nds32*-linux*)
# Basic makefile fragment and extra_parts for crt stuff.
# We also append c-isr library implementation.
tmake_file="${tmake_file} t-slibgcc-libgcc"
tmake_file="${tmake_file} nds32/t-nds32-glibc nds32/t-crtstuff t-softfp-sfdf t-softfp"
# The header file of defining MD_FALLBACK_FRAME_STATE_FOR.
md_unwind_header=nds32/linux-unwind.h
# Append library definition makefile fragment according to --with-nds32-lib=X setting.
case "${with_nds32_lib}" in
"" | glibc | uclibc )
;;
*)
echo "Cannot accept --with-nds32-lib=$with_nds32_lib, available values are: glibc uclibc" 1>&2
exit 1
;;
esac
;;
nds32*-elf*)
# Basic makefile fragment and extra_parts for crt stuff.
# We also append c-isr library implementation.

282
libgcc/config/nds32/linux-atomic.c Normal file
View file

@ -0,0 +1,282 @@
/* Linux-specific atomic operations for NDS32 Linux.
Copyright (C) 2012-2018 Free Software Foundation, Inc.
This file 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.
This file 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/>. */
/* We implement byte, short and int versions of each atomic operation
using the kernel helper defined below. There is no support for
64-bit operations yet. */
/* This function copy form NDS32 Linux-kernal. */
static inline int
__kernel_cmpxchg (int oldval, int newval, int *mem)
{
int temp1, temp2, temp3, offset;
asm volatile ("msync\tall\n"
"movi\t%0, #0\n"
"1:\n"
"\tllw\t%1, [%4+%0]\n"
"\tsub\t%3, %1, %6\n"
"\tcmovz\t%2, %5, %3\n"
"\tcmovn\t%2, %1, %3\n"
"\tscw\t%2, [%4+%0]\n"
"\tbeqz\t%2, 1b\n"
: "=&r" (offset), "=&r" (temp3), "=&r" (temp2), "=&r" (temp1)
: "r" (mem), "r" (newval), "r" (oldval) : "memory");
return temp1;
}
#define HIDDEN __attribute__ ((visibility ("hidden")))
#ifdef __NDS32_EL__
#define INVERT_MASK_1 0
#define INVERT_MASK_2 0
#else
#define INVERT_MASK_1 24
#define INVERT_MASK_2 16
#endif
#define MASK_1 0xffu
#define MASK_2 0xffffu
#define FETCH_AND_OP_WORD(OP, PFX_OP, INF_OP) \
int HIDDEN \
__sync_fetch_and_##OP##_4 (int *ptr, int val) \
{ \
int failure, tmp; \
\
do { \
tmp = __atomic_load_n (ptr, __ATOMIC_SEQ_CST); \
failure = __kernel_cmpxchg (tmp, PFX_OP (tmp INF_OP val), ptr); \
} while (failure != 0); \
\
return tmp; \
}
FETCH_AND_OP_WORD (add, , +)
FETCH_AND_OP_WORD (sub, , -)
FETCH_AND_OP_WORD (or, , |)
FETCH_AND_OP_WORD (and, , &)
FETCH_AND_OP_WORD (xor, , ^)
FETCH_AND_OP_WORD (nand, ~, &)
#define NAME_oldval(OP, WIDTH) __sync_fetch_and_##OP##_##WIDTH
#define NAME_newval(OP, WIDTH) __sync_##OP##_and_fetch_##WIDTH
/* Implement both __sync_<op>_and_fetch and __sync_fetch_and_<op> for
subword-sized quantities. */
#define SUBWORD_SYNC_OP(OP, PFX_OP, INF_OP, TYPE, WIDTH, RETURN) \
TYPE HIDDEN \
NAME##_##RETURN (OP, WIDTH) (TYPE *ptr, TYPE val) \
{ \
int *wordptr = (int *) ((unsigned long) ptr & ~3); \
unsigned int mask, shift, oldval, newval; \
int failure; \
\
shift = (((unsigned long) ptr & 3) << 3) ^ INVERT_MASK_##WIDTH; \
mask = MASK_##WIDTH << shift; \
\
do { \
oldval = __atomic_load_n (wordptr, __ATOMIC_SEQ_CST); \
newval = ((PFX_OP (((oldval & mask) >> shift) \
INF_OP (unsigned int) val)) << shift) & mask; \
newval |= oldval & ~mask; \
failure = __kernel_cmpxchg (oldval, newval, wordptr); \
} while (failure != 0); \
\
return (RETURN & mask) >> shift; \
}
SUBWORD_SYNC_OP (add, , +, unsigned short, 2, oldval)
SUBWORD_SYNC_OP (sub, , -, unsigned short, 2, oldval)
SUBWORD_SYNC_OP (or, , |, unsigned short, 2, oldval)
SUBWORD_SYNC_OP (and, , &, unsigned short, 2, oldval)
SUBWORD_SYNC_OP (xor, , ^, unsigned short, 2, oldval)
SUBWORD_SYNC_OP (nand, ~, &, unsigned short, 2, oldval)
SUBWORD_SYNC_OP (add, , +, unsigned char, 1, oldval)
SUBWORD_SYNC_OP (sub, , -, unsigned char, 1, oldval)
SUBWORD_SYNC_OP (or, , |, unsigned char, 1, oldval)
SUBWORD_SYNC_OP (and, , &, unsigned char, 1, oldval)
SUBWORD_SYNC_OP (xor, , ^, unsigned char, 1, oldval)
SUBWORD_SYNC_OP (nand, ~, &, unsigned char, 1, oldval)
#define OP_AND_FETCH_WORD(OP, PFX_OP, INF_OP) \
int HIDDEN \
__sync_##OP##_and_fetch_4 (int *ptr, int val) \
{ \
int tmp, failure; \
\
do { \
tmp = __atomic_load_n (ptr, __ATOMIC_SEQ_CST); \
failure = __kernel_cmpxchg (tmp, PFX_OP (tmp INF_OP val), ptr); \
} while (failure != 0); \
\
return PFX_OP (tmp INF_OP val); \
}
OP_AND_FETCH_WORD (add, , +)
OP_AND_FETCH_WORD (sub, , -)
OP_AND_FETCH_WORD (or, , |)
OP_AND_FETCH_WORD (and, , &)
OP_AND_FETCH_WORD (xor, , ^)
OP_AND_FETCH_WORD (nand, ~, &)
SUBWORD_SYNC_OP (add, , +, unsigned short, 2, newval)
SUBWORD_SYNC_OP (sub, , -, unsigned short, 2, newval)
SUBWORD_SYNC_OP (or, , |, unsigned short, 2, newval)
SUBWORD_SYNC_OP (and, , &, unsigned short, 2, newval)
SUBWORD_SYNC_OP (xor, , ^, unsigned short, 2, newval)
SUBWORD_SYNC_OP (nand, ~, &, unsigned short, 2, newval)
SUBWORD_SYNC_OP (add, , +, unsigned char, 1, newval)
SUBWORD_SYNC_OP (sub, , -, unsigned char, 1, newval)
SUBWORD_SYNC_OP (or, , |, unsigned char, 1, newval)
SUBWORD_SYNC_OP (and, , &, unsigned char, 1, newval)
SUBWORD_SYNC_OP (xor, , ^, unsigned char, 1, newval)
SUBWORD_SYNC_OP (nand, ~, &, unsigned char, 1, newval)
int HIDDEN
__sync_val_compare_and_swap_4 (int *ptr, int oldval, int newval)
{
int actual_oldval, fail;
while (1)
{
actual_oldval = __atomic_load_n (ptr, __ATOMIC_SEQ_CST);
if (oldval != actual_oldval)
return actual_oldval;
fail = __kernel_cmpxchg (actual_oldval, newval, ptr);
if (!fail)
return oldval;
}
}
#define SUBWORD_VAL_CAS(TYPE, WIDTH) \
TYPE HIDDEN \
__sync_val_compare_and_swap_##WIDTH (TYPE *ptr, TYPE oldval, \
TYPE newval) \
{ \
int *wordptr = (int *)((unsigned long) ptr & ~3), fail; \
unsigned int mask, shift, actual_oldval, actual_newval; \
\
shift = (((unsigned long) ptr & 3) << 3) ^ INVERT_MASK_##WIDTH; \
mask = MASK_##WIDTH << shift; \
\
while (1) \
{ \
actual_oldval = __atomic_load_n (wordptr, __ATOMIC_SEQ_CST); \
\
if (((actual_oldval & mask) >> shift) != (unsigned int) oldval) \
return (actual_oldval & mask) >> shift; \
\
actual_newval = (actual_oldval & ~mask) \
| (((unsigned int) newval << shift) & mask); \
\
fail = __kernel_cmpxchg (actual_oldval, actual_newval, \
wordptr); \
\
if (!fail) \
return oldval; \
} \
}
SUBWORD_VAL_CAS (unsigned short, 2)
SUBWORD_VAL_CAS (unsigned char, 1)
typedef unsigned char bool;
bool HIDDEN
__sync_bool_compare_and_swap_4 (int *ptr, int oldval, int newval)
{
int failure = __kernel_cmpxchg (oldval, newval, ptr);
return (failure == 0);
}
#define SUBWORD_BOOL_CAS(TYPE, WIDTH) \
bool HIDDEN \
__sync_bool_compare_and_swap_##WIDTH (TYPE *ptr, TYPE oldval, \
TYPE newval) \
{ \
TYPE actual_oldval \
= __sync_val_compare_and_swap_##WIDTH (ptr, oldval, newval); \
return (oldval == actual_oldval); \
}
SUBWORD_BOOL_CAS (unsigned short, 2)
SUBWORD_BOOL_CAS (unsigned char, 1)
int HIDDEN
__sync_lock_test_and_set_4 (int *ptr, int val)
{
int failure, oldval;
do {
oldval = __atomic_load_n (ptr, __ATOMIC_SEQ_CST);
failure = __kernel_cmpxchg (oldval, val, ptr);
} while (failure != 0);
return oldval;
}
#define SUBWORD_TEST_AND_SET(TYPE, WIDTH) \
TYPE HIDDEN \
__sync_lock_test_and_set_##WIDTH (TYPE *ptr, TYPE val) \
{ \
int failure; \
unsigned int oldval, newval, shift, mask; \
int *wordptr = (int *) ((unsigned long) ptr & ~3); \
\
shift = (((unsigned long) ptr & 3) << 3) ^ INVERT_MASK_##WIDTH; \
mask = MASK_##WIDTH << shift; \
\
do { \
oldval = __atomic_load_n (wordptr, __ATOMIC_SEQ_CST); \
newval = (oldval & ~mask) \
| (((unsigned int) val << shift) & mask); \
failure = __kernel_cmpxchg (oldval, newval, wordptr); \
} while (failure != 0); \
\
return (oldval & mask) >> shift; \
}
SUBWORD_TEST_AND_SET (unsigned short, 2)
SUBWORD_TEST_AND_SET (unsigned char, 1)
#define SYNC_LOCK_RELEASE(TYPE, WIDTH) \
void HIDDEN \
__sync_lock_release_##WIDTH (TYPE *ptr) \
{ \
/* All writes before this point must be seen before we release \
the lock itself. */ \
__builtin_nds32_msync_all (); \
*ptr = 0; \
}
SYNC_LOCK_RELEASE (int, 4)
SYNC_LOCK_RELEASE (short, 2)
SYNC_LOCK_RELEASE (char, 1)

156
libgcc/config/nds32/linux-unwind.h Normal file
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@ -0,0 +1,156 @@
/* DWARF2 EH unwinding support for NDS32 Linux signal frame.
Copyright (C) 2014-2015 Free Software Foundation, Inc.
Contributed by Andes Technology Corporation.
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/>. */
#ifndef inhibit_libc
/* Do code reading to identify a signal frame, and set the frame
state data appropriately. See unwind-dw2.c for the structs.
The corresponding bits in the Linux kernel are in
arch/nds32/kernel/signal.c. */
#include <signal.h>
#include <asm/unistd.h>
/* Exactly the same layout as the kernel structures, unique names. */
/* arch/nds32/kernel/signal.c */
struct _sigframe {
struct ucontext uc;
unsigned long retcode;
};
struct _rt_sigframe {
siginfo_t info;
struct _sigframe sig;
};
#define SIGRETURN 0xeb0e0a64
#define RT_SIGRETURN 0xab150a64
#define MD_FALLBACK_FRAME_STATE_FOR nds32_fallback_frame_state
/* This function is supposed to be invoked by uw_frame_state_for()
when there is no unwind data available.
Generally, given the _Unwind_Context CONTEXT for a stack frame,
we need to look up its caller and decode information into FS.
However, if the exception handling happens within a signal handler,
the return address of signal handler is a special module, which
contains signal return syscall and has no FDE in the .eh_frame section.
We need to implement MD_FALLBACK_FRAME_STATE_FOR so that we can
unwind through signal frames. */
static _Unwind_Reason_Code
nds32_fallback_frame_state (struct _Unwind_Context *context,
_Unwind_FrameState *fs)
{
u_int32_t *pc = (u_int32_t *) context->ra;
struct sigcontext *sc_;
_Unwind_Ptr new_cfa;
#ifdef __NDS32_EB__
#error "Signal handler is not supported for force unwind."
#endif
if ((_Unwind_Ptr) pc & 3)
return _URC_END_OF_STACK;
/* Check if we are going through a signal handler.
See arch/nds32/kernel/signal.c implementation.
SWI_SYS_SIGRETURN -> (0xeb0e0a64)
SWI_SYS_RT_SIGRETURN -> (0xab150a64)
FIXME: Currently we only handle little endian (EL) case. */
if (pc[0] == SIGRETURN)
{
/* Using '_sigfame' memory address to locate kernal's sigcontext.
The sigcontext structures in arch/nds32/include/asm/sigcontext.h. */
struct _sigframe *rt_;
rt_ = context->cfa;
sc_ = &rt_->uc.uc_mcontext;
}
else if (pc[0] == RT_SIGRETURN)
{
/* Using '_sigfame' memory address to locate kernal's sigcontext. */
struct _rt_sigframe *rt_;
rt_ = context->cfa;
sc_ = &rt_->sig.uc.uc_mcontext;
}
else
return _URC_END_OF_STACK;
/* Update cfa from sigcontext. */
new_cfa = (_Unwind_Ptr) sc_;
fs->regs.cfa_how = CFA_REG_OFFSET;
fs->regs.cfa_reg = STACK_POINTER_REGNUM;
fs->regs.cfa_offset = new_cfa - (_Unwind_Ptr) context->cfa;
#define NDS32_PUT_FS_REG(NUM, NAME) \
(fs->regs.reg[NUM].how = REG_SAVED_OFFSET, \
fs->regs.reg[NUM].loc.offset = (_Unwind_Ptr) &(sc_->NAME) - new_cfa)
/* Restore all registers value. */
NDS32_PUT_FS_REG (0, nds32_r0);
NDS32_PUT_FS_REG (1, nds32_r1);
NDS32_PUT_FS_REG (2, nds32_r2);
NDS32_PUT_FS_REG (3, nds32_r3);
NDS32_PUT_FS_REG (4, nds32_r4);
NDS32_PUT_FS_REG (5, nds32_r5);
NDS32_PUT_FS_REG (6, nds32_r6);
NDS32_PUT_FS_REG (7, nds32_r7);
NDS32_PUT_FS_REG (8, nds32_r8);
NDS32_PUT_FS_REG (9, nds32_r9);
NDS32_PUT_FS_REG (10, nds32_r10);
NDS32_PUT_FS_REG (11, nds32_r11);
NDS32_PUT_FS_REG (12, nds32_r12);
NDS32_PUT_FS_REG (13, nds32_r13);
NDS32_PUT_FS_REG (14, nds32_r14);
NDS32_PUT_FS_REG (15, nds32_r15);
NDS32_PUT_FS_REG (16, nds32_r16);
NDS32_PUT_FS_REG (17, nds32_r17);
NDS32_PUT_FS_REG (18, nds32_r18);
NDS32_PUT_FS_REG (19, nds32_r19);
NDS32_PUT_FS_REG (20, nds32_r20);
NDS32_PUT_FS_REG (21, nds32_r21);
NDS32_PUT_FS_REG (22, nds32_r22);
NDS32_PUT_FS_REG (23, nds32_r23);
NDS32_PUT_FS_REG (24, nds32_r24);
NDS32_PUT_FS_REG (25, nds32_r25);
NDS32_PUT_FS_REG (28, nds32_fp);
NDS32_PUT_FS_REG (29, nds32_gp);
NDS32_PUT_FS_REG (30, nds32_lp);
NDS32_PUT_FS_REG (31, nds32_sp);
/* Restore PC, point to trigger signal instruction. */
NDS32_PUT_FS_REG (32, nds32_ipc);
#undef NDS32_PUT_FS_REG
/* The retaddr is PC, use PC to find FDE. */
fs->retaddr_column = 32;
fs->signal_frame = 1;
return _URC_NO_REASON;
}
#endif