[NDS32] Support Linux target for nds32.
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
Chung-Ju Wu
parent
2140297cb3
commit
cf3cd43d5a
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@ -1,3 +1,37 @@
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2018-06-02 Chung-Ju Wu <jasonwucj@gmail.com>
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Kito Cheng <kito.cheng@gmail.com>
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* config.gcc (nds32*): Use nds32-linux.opt and nds32-elf.opt.
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(nds32le-*-*, nds32be-*-*): Integrate checking process.
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(nds32*-*-*): Add glibc and uclibc conditions.
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* common/config/nds32/nds32-common.c (nds32_except_unwind_info): New.
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(TARGET_EXCEPT_UNWIND_INFO): Define.
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* config/nds32/elf.h: New file.
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* config/nds32/linux.h: New file.
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* config/nds32/nds32-elf.opt: New file.
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* config/nds32/nds32-linux.opt: New file.
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* config/nds32/nds32-fp-as-gp.c
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(pass_nds32_fp_as_gp::gate): Consider TARGET_LINUX_ABI.
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* config/nds32/nds32.c (nds32_conditional_register_usage): Consider
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TARGET_LINUX_ABI.
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(nds32_asm_file_end): Ditto.
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(nds32_print_operand): Ditto.
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(nds32_insert_attributes): Ditto.
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(nds32_init_libfuncs): New function.
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(TARGET_HAVE_TLS): Define.
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(TARGET_INIT_LIBFUNCS): Define.
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* config/nds32/nds32.h (TARGET_DEFAULT_RELAX): Apply different relax
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spec content.
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(TARGET_ELF): Apply different mcmodel setting.
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(LINK_SPEC, LIB_SPEC, STARTFILE_SPEC, ENDFILE_SPEC): The content has
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been migrated into elf.h and linux.h files.
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* config/nds32/nds32.md (add_pc): Consider TARGET_LINUX_ABI.
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* config/nds32/nds32.opt (mvh): Consider TARGET_LINUX_ABI.
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(mcmodel): The content has been migrated into nds32-elf.opt and
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nds32-linux.opt files.
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* config/nds32/t-elf: New file.
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* config/nds32/t-linux: New file.
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2018-06-02 Chung-Ju Wu <jasonwucj@gmail.com>
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Shiva Chen <shiva0217@gmail.com>
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@ -87,6 +87,19 @@ static const struct default_options nds32_option_optimization_table[] =
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};
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/* ------------------------------------------------------------------------ */
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/* Implement TARGET_EXCEPT_UNWIND_INFO. */
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static enum unwind_info_type
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nds32_except_unwind_info (struct gcc_options *opts ATTRIBUTE_UNUSED)
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{
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if (TARGET_LINUX_ABI)
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return UI_DWARF2;
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return UI_SJLJ;
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}
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/* ------------------------------------------------------------------------ */
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/* Run-time Target Specification. */
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@ -127,7 +140,7 @@ static const struct default_options nds32_option_optimization_table[] =
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/* Defining the Output Assembler Language. */
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#undef TARGET_EXCEPT_UNWIND_INFO
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#define TARGET_EXCEPT_UNWIND_INFO sjlj_except_unwind_info
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#define TARGET_EXCEPT_UNWIND_INFO nds32_except_unwind_info
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/* ------------------------------------------------------------------------ */
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@ -448,6 +448,16 @@ mips*-*-*)
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nds32*)
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cpu_type=nds32
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extra_headers="nds32_intrinsic.h"
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case ${target} in
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nds32*-*-linux*)
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extra_options="${extra_options} nds32/nds32-linux.opt"
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;;
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nds32*-*-elf*)
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extra_options="${extra_options} nds32/nds32-elf.opt"
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;;
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*)
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;;
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esac
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extra_objs="nds32-cost.o nds32-intrinsic.o nds32-isr.o nds32-md-auxiliary.o nds32-pipelines-auxiliary.o nds32-predicates.o nds32-memory-manipulation.o nds32-fp-as-gp.o nds32-relax-opt.o nds32-utils.o"
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;;
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nios2-*-*)
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@ -2335,18 +2345,32 @@ msp430*-*-*)
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tmake_file="${tmake_file} msp430/t-msp430"
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extra_gcc_objs="driver-msp430.o"
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;;
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nds32le-*-*)
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nds32*-*-*)
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target_cpu_default="0"
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tm_defines="${tm_defines}"
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tm_file="dbxelf.h elfos.h newlib-stdint.h ${tm_file} nds32/nds32_intrinsic.h"
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tmake_file="nds32/t-nds32 nds32/t-mlibs"
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;;
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nds32be-*-*)
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target_cpu_default="0|MASK_BIG_ENDIAN"
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tm_defines="${tm_defines} TARGET_BIG_ENDIAN_DEFAULT=1"
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tm_file="dbxelf.h elfos.h newlib-stdint.h ${tm_file} nds32/nds32_intrinsic.h"
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tmake_file="nds32/t-nds32 nds32/t-mlibs"
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case ${target} in
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nds32le*-*-*)
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;;
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nds32be-*-*)
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target_cpu_default="${target_cpu_default}|MASK_BIG_ENDIAN"
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tm_defines="${tm_defines} TARGET_BIG_ENDIAN_DEFAULT=1"
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;;
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esac
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case ${target} in
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nds32*-*-elf*)
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tm_file="dbxelf.h elfos.h newlib-stdint.h ${tm_file} nds32/elf.h nds32/nds32_intrinsic.h"
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tmake_file="nds32/t-nds32 nds32/t-elf"
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;;
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nds32*-*-linux*)
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tm_file="dbxelf.h elfos.h ${tm_file} gnu-user.h linux.h glibc-stdint.h nds32/linux.h nds32/nds32_intrinsic.h"
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tmake_file="${tmake_file} nds32/t-nds32 nds32/t-linux"
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;;
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esac
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# Handle --enable-default-relax setting.
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if test x${enable_default_relax} = xyes; then
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tm_defines="${tm_defines} TARGET_DEFAULT_RELAX=1"
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fi
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# Handle --with-ext-dsp
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if test x${with_ext_dsp} = xyes; then
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tm_defines="${tm_defines} TARGET_DEFAULT_EXT_DSP=1"
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@ -4383,15 +4407,30 @@ case "${target}" in
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"")
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# the default library is newlib
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with_nds32_lib=newlib
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tm_defines="${tm_defines} TARGET_DEFAULT_CTOR_DTOR=1"
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;;
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newlib)
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# OK
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tm_defines="${tm_defines} TARGET_DEFAULT_CTOR_DTOR=1"
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;;
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mculib)
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# OK
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# for the arch=v3f or arch=v3s under mculib toolchain,
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# we would like to set -fno-math-errno as default
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case "${with_arch}" in
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v3f | v3s)
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tm_defines="${tm_defines} TARGET_DEFAULT_NO_MATH_ERRNO=1"
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;;
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esac
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;;
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glibc)
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# OK
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tm_defines="${tm_defines} TARGET_DEFAULT_TLSDESC_TRAMPOLINE=1"
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;;
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uclibc)
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;;
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*)
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echo "Cannot accept --with-nds32-lib=$with_nds32_lib, available values are: newlib mculib" 1>&2
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echo "Cannot accept --with-nds32-lib=$with_nds32_lib, available values are: newlib mculib glibc uclibc" 1>&2
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exit 1
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;;
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esac
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@ -0,0 +1,81 @@
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/* Definitions of target machine of Andes NDS32 cpu for GNU compiler
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Copyright (C) 2012-2014 Free Software Foundation, Inc.
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Contributed by Andes Technology Corporation.
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This file is part of GCC.
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GCC is free software; you can redistribute it and/or modify it
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under the terms of the GNU General Public License as published
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by the Free Software Foundation; either version 3, or (at your
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option) any later version.
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GCC is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
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License for more details.
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You should have received a copy of the GNU General Public License
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along with GCC; see the file COPYING3. If not see
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<http://www.gnu.org/licenses/>. */
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/* ------------------------------------------------------------------------ */
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#define TARGET_LINUX_ABI 0
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/* In the configure stage we may use options --enable-default-relax,
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--enable-Os-default-ifc and --enable-Os-default-ex9. They effect
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the default spec of passing --relax, --mifc, and --mex9 to linker.
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We use NDS32_RELAX_SPEC, NDS32_IFC_SPEC, and NDS32_EX9_SPEC
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so that we can customize them conveniently. */
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#define LINK_SPEC \
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" %{G*}" \
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" %{mbig-endian:-EB} %{mlittle-endian:-EL}" \
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" %{shared:-shared}" \
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NDS32_RELAX_SPEC
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#define LIB_SPEC \
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" -lc -lgloss"
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#define LIBGCC_SPEC \
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" -lgcc"
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/* The option -mno-ctor-dtor can disable constructor/destructor feature
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by applying different crt stuff. In the convention, crt0.o is the
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startup file without constructor/destructor;
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crt1.o, crti.o, crtbegin.o, crtend.o, and crtn.o are the
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startup files with constructor/destructor.
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Note that crt0.o, crt1.o, crti.o, and crtn.o are provided
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by newlib/mculib/glibc/ublic, while crtbegin.o and crtend.o are
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currently provided by GCC for nds32 target.
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For nds32 target so far:
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If -mno-ctor-dtor, we are going to link
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"crt0.o [user objects]".
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If -mctor-dtor, we are going to link
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"crt1.o crtbegin1.o [user objects] crtend1.o".
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Note that the TARGET_DEFAULT_CTOR_DTOR would effect the
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default behavior. Check gcc/config.gcc for more information. */
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#ifdef TARGET_DEFAULT_CTOR_DTOR
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#define STARTFILE_SPEC \
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" %{!mno-ctor-dtor:crt1.o%s;:crt0.o%s}" \
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" %{!mno-ctor-dtor:crtbegin1.o%s}" \
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" %{mcrt-arg:crtarg.o%s}"
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#define ENDFILE_SPEC \
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" %{!mno-ctor-dtor:crtend1.o%s}"
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#else
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#define STARTFILE_SPEC \
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" %{mctor-dtor|coverage:crt1.o%s;:crt0.o%s}" \
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" %{mctor-dtor|coverage:crtbegin1.o%s}" \
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" %{mcrt-arg:crtarg.o%s}"
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#define ENDFILE_SPEC \
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" %{mctor-dtor|coverage:crtend1.o%s}"
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#endif
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#define STARTFILE_CXX_SPEC \
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" %{!mno-ctor-dtor:crt1.o%s;:crt0.o%s}" \
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" %{!mno-ctor-dtor:crtbegin1.o%s}" \
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" %{mcrt-arg:crtarg.o%s}"
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#define ENDFILE_CXX_SPEC \
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" %{!mno-ctor-dtor:crtend1.o%s}"
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@ -0,0 +1,77 @@
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/* Definitions of target machine of Andes NDS32 cpu for GNU compiler
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Copyright (C) 2012-2014 Free Software Foundation, Inc.
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Contributed by Andes Technology Corporation.
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This file is part of GCC.
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GCC is free software; you can redistribute it and/or modify it
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under the terms of the GNU General Public License as published
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by the Free Software Foundation; either version 3, or (at your
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option) any later version.
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GCC is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
|
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or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
|
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License for more details.
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||||
|
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You should have received a copy of the GNU General Public License
|
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along with GCC; see the file COPYING3. If not see
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<http://www.gnu.org/licenses/>. */
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/* ------------------------------------------------------------------------ */
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#define TARGET_LINUX_ABI 1
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#undef SIZE_TYPE
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#define SIZE_TYPE "unsigned int"
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#undef PTRDIFF_TYPE
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#define PTRDIFF_TYPE "int"
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#ifdef TARGET_DEFAULT_TLSDESC_TRAMPOLINE
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#define NDS32_TLSDESC_TRAMPOLINE_SPEC \
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" %{!mno-tlsdesc-trampoline:--mtlsdesc-trampoline}"
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#else
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#define NDS32_TLSDESC_TRAMPOLINE_SPEC ""
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#endif
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#define TARGET_OS_CPP_BUILTINS() \
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do \
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{ \
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GNU_USER_TARGET_OS_CPP_BUILTINS(); \
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} \
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while (0)
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#define GLIBC_DYNAMIC_LINKER "/lib/ld.so.1"
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/* In the configure stage we may use options --enable-default-relax,
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--enable-Os-default-ifc and --enable-Os-default-ex9. They effect
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the default spec of passing --relax, --mifc, and --mex9 to linker.
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We use NDS32_RELAX_SPEC, NDS32_IFC_SPEC, and NDS32_EX9_SPEC
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so that we can customize them conveniently. */
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#define LINK_SPEC \
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" %{G*}" \
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" %{mbig-endian:-EB} %{mlittle-endian:-EL}" \
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" %{shared:-shared} \
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%{!shared: \
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%{!static: \
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%{rdynamic:-export-dynamic} \
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-dynamic-linker " GNU_USER_DYNAMIC_LINKER "} \
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%{static:-static}}" \
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NDS32_RELAX_SPEC \
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NDS32_TLSDESC_TRAMPOLINE_SPEC
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#define LINK_PIE_SPEC "%{pie:%{!fno-pie:%{!fno-PIE:%{!static:-pie}}}} "
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#define CPP_SPEC "%{pthread:-D_REENTRANT}"
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/* The SYNC operations are implemented as library functions, not
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INSN patterns. As a result, the HAVE defines for the patterns are
|
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not defined. We need to define them to generate the corresponding
|
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__GCC_HAVE_SYNC_COMPARE_AND_SWAP_* and __GCC_ATOMIC_*_LOCK_FREE
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defines.
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Ref: https://sourceware.org/ml/libc-alpha/2014-09/msg00322.html */
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#define HAVE_sync_compare_and_swapqi 1
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#define HAVE_sync_compare_and_swaphi 1
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#define HAVE_sync_compare_and_swapsi 1
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|
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@ -0,0 +1,16 @@
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mcmodel=
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Target RejectNegative Joined Enum(nds32_cmodel_type) Var(nds32_cmodel_option) Init(CMODEL_MEDIUM)
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Specify the address generation strategy for code model.
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Enum
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Name(nds32_cmodel_type) Type(enum nds32_cmodel_type)
|
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Known cmodel types (for use with the -mcmodel= option):
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|
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EnumValue
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Enum(nds32_cmodel_type) String(small) Value(CMODEL_SMALL)
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|
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EnumValue
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Enum(nds32_cmodel_type) String(medium) Value(CMODEL_MEDIUM)
|
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|
||||
EnumValue
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Enum(nds32_cmodel_type) String(large) Value(CMODEL_LARGE)
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|
|
@ -265,7 +265,8 @@ public:
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/* opt_pass methods: */
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bool gate (function *)
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{
|
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return TARGET_16_BIT
|
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return !TARGET_LINUX_ABI
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&& TARGET_16_BIT
|
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&& optimize_size;
|
||||
}
|
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unsigned int execute (function *) { return nds32_fp_as_gp (); }
|
||||
|
|
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|
|
@ -0,0 +1,16 @@
|
|||
mcmodel=
|
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Target RejectNegative Joined Enum(nds32_cmodel_type) Var(nds32_cmodel_option) Init(CMODEL_LARGE)
|
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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)
|
||||
|
|
@ -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;
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||||
|
|
@ -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
|
||||
|
|
|
|||
|
|
@ -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 }
|
||||
|
|
|
|||
|
|
@ -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")]
|
||||
|
|
|
|||
|
|
@ -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.
|
||||
|
|
|
|||
|
|
@ -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+,$(TM_MULTILIB_CONFIG)),)
|
||||
MULTILIB_OPTIONS += march=v3m+
|
||||
endif
|
||||
|
||||
# ------------------------------------------------------------------------
|
||||
|
|
@ -0,0 +1,26 @@
|
|||
# The multilib settings of Andes NDS32 cpu for GNU compiler
|
||||
# Copyright (C) 2012-2018 Free Software Foundation, Inc.
|
||||
# Contributed by Andes Technology Corporation.
|
||||
#
|
||||
# This file is part of GCC.
|
||||
#
|
||||
# GCC is free software; you can redistribute it and/or modify it
|
||||
# under the terms of the GNU General Public License as published
|
||||
# by the Free Software Foundation; either version 3, or (at your
|
||||
# option) any later version.
|
||||
#
|
||||
# GCC is distributed in the hope that it will be useful, but WITHOUT
|
||||
# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
|
||||
# or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
|
||||
# License for more details.
|
||||
#
|
||||
# You should have received a copy of the GNU General Public License
|
||||
# along with GCC; see the file COPYING3. If not see
|
||||
# <http://www.gnu.org/licenses/>.
|
||||
|
||||
# We also define a macro MULTILIB_DEFAULTS in nds32.h that tells the
|
||||
# driver program which options are defaults for this target and thus
|
||||
# do not need to be handled specially.
|
||||
MULTILIB_OPTIONS +=
|
||||
|
||||
# ------------------------------------------------------------------------
|
||||
|
|
@ -1,3 +1,10 @@
|
|||
2018-06-02 Chung-Ju Wu <jasonwucj@gmail.com>
|
||||
Monk Chiang <sh.chiang04@gmail.com>
|
||||
|
||||
* config.host (nds32*-linux*): New.
|
||||
* config/nds32/linux-atomic.c: New file.
|
||||
* config/nds32/linux-unwind.h: New file.
|
||||
|
||||
2018-05-31 Uros Bizjak <ubizjak@gmail.com>
|
||||
|
||||
PR target/85591
|
||||
|
|
|
|||
|
|
@ -979,6 +979,23 @@ msp430*-*-elf)
|
|||
tmake_file="$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.
|
||||
|
|
|
|||
|
|
@ -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)
|
||||
|
|
@ -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
|
||||
Loading…
Reference in New Issue