yann@1: By Lennert Buytenhek <buytenh@wantstofly.org>
yann@1: Adds support for arm*b-linux* big-endian ARM targets
yann@1: 
yann@1: See http://gcc.gnu.org/PR16350
yann@1: 
yann@1: Index: gcc-4.1.1/gcc/config/arm/linux-elf.h
yann@1: ===================================================================
yann@1: --- gcc-4.1.1.orig/gcc/config/arm/linux-elf.h
yann@1: +++ gcc-4.1.1/gcc/config/arm/linux-elf.h
yann@1: @@ -28,19 +28,33 @@
yann@1:  #undef  TARGET_VERSION
yann@1:  #define TARGET_VERSION  fputs (" (ARM GNU/Linux with ELF)", stderr);
yann@1:  
yann@1: +/*
yann@1: + * 'config.gcc' defines TARGET_BIG_ENDIAN_DEFAULT as 1 for arm*b-*
yann@1: + * (big endian) configurations.
yann@1: + */
yann@1: +#if TARGET_BIG_ENDIAN_DEFAULT
yann@1: +#define TARGET_ENDIAN_DEFAULT MASK_BIG_END
yann@1: +#define TARGET_ENDIAN_OPTION "mbig-endian"
yann@1: +#define TARGET_LINKER_EMULATION "armelfb_linux"
yann@1: +#else
yann@1: +#define TARGET_ENDIAN_DEFAULT 0
yann@1: +#define TARGET_ENDIAN_OPTION "mlittle-endian"
yann@1: +#define TARGET_LINKER_EMULATION "armelf_linux"
yann@1: +#endif
yann@1: +
yann@1:  #undef  TARGET_DEFAULT_FLOAT_ABI
yann@1:  #define TARGET_DEFAULT_FLOAT_ABI ARM_FLOAT_ABI_HARD
yann@1:  
yann@1:  #undef  TARGET_DEFAULT
yann@1: -#define TARGET_DEFAULT (0)
yann@1: +#define TARGET_DEFAULT (TARGET_ENDIAN_DEFAULT)
yann@1:  
yann@1:  #define SUBTARGET_CPU_DEFAULT TARGET_CPU_arm6
yann@1:  
yann@1: -#define SUBTARGET_EXTRA_LINK_SPEC " -m armelf_linux -p"
yann@1: +#define SUBTARGET_EXTRA_LINK_SPEC " -m " TARGET_LINKER_EMULATION " -p"
yann@1:  
yann@1:  #undef  MULTILIB_DEFAULTS
yann@1:  #define MULTILIB_DEFAULTS \
yann@1: -	{ "marm", "mlittle-endian", "mhard-float", "mno-thumb-interwork" }
yann@1: +	{ "marm", TARGET_ENDIAN_OPTION, "mhard-float", "mno-thumb-interwork" }
yann@1:  
yann@1:  /* Now we define the strings used to build the spec file.  */
yann@1:  #undef  LIB_SPEC
yann@1: @@ -61,7 +75,7 @@
yann@1:     %{rdynamic:-export-dynamic} \
yann@1:     %{!dynamic-linker:-dynamic-linker " LINUX_TARGET_INTERPRETER "} \
yann@1:     -X \
yann@1: -   %{mbig-endian:-EB}" \
yann@1: +   %{mbig-endian:-EB} %{mlittle-endian:-EL}" \
yann@1:     SUBTARGET_EXTRA_LINK_SPEC
yann@1:  
yann@1:  #undef  LINK_SPEC
yann@1: Index: gcc-4.1.1/gcc/config.gcc
yann@1: ===================================================================
yann@1: --- gcc-4.1.1.orig/gcc/config.gcc
yann@1: +++ gcc-4.1.1/gcc/config.gcc
yann@1: @@ -672,6 +672,11 @@ arm*-*-netbsd*)
yann@1:  	;;
yann@1:  arm*-*-linux*)			# ARM GNU/Linux with ELF
yann@1:  	tm_file="dbxelf.h elfos.h linux.h arm/elf.h arm/linux-gas.h arm/linux-elf.h" 
yann@1: +	case $target in
yann@1: +	arm*b-*)
yann@1: +		tm_defines="${tm_defines} TARGET_BIG_ENDIAN_DEFAULT=1"
yann@1: +		;;
yann@1: +	esac
yann@1:  	tmake_file="${tmake_file} t-linux arm/t-arm"
yann@1:  	case ${target} in
yann@1:  	arm*-*-linux-gnueabi)
yann@1: Index: gcc-4.1.1/gcc/config/arm/linux-eabi.h
yann@1: ===================================================================
yann@1: --- gcc-4.1.1.orig/gcc/config/arm/linux-eabi.h
yann@1: +++ gcc-4.1.1/gcc/config/arm/linux-eabi.h
yann@1: @@ -20,6 +20,17 @@
yann@1:     the Free Software Foundation, 51 Franklin Street, Fifth Floor,
yann@1:     Boston, MA 02110-1301, USA.  */
yann@1:  
yann@1: +/*
yann@1: + * 'config.gcc' defines TARGET_BIG_ENDIAN_DEFAULT as 1 for arm*b-*
yann@1: + * (big endian) configurations.
yann@1: + */
yann@1: +#undef TARGET_LINKER_EMULATION
yann@1: +#if TARGET_BIG_ENDIAN_DEFAULT
yann@1: +#define TARGET_LINKER_EMULATION "armelfb_linux_eabi"
yann@1: +#else
yann@1: +#define TARGET_LINKER_EMULATION "armelf_linux_eabi"
yann@1: +#endif
yann@1: +
yann@1:  /* On EABI GNU/Linux, we want both the BPABI builtins and the
yann@1:     GNU/Linux builtins.  */
yann@1:  #undef TARGET_OS_CPP_BUILTINS
yann@1: @@ -48,7 +59,7 @@
yann@1:  #define SUBTARGET_CPU_DEFAULT TARGET_CPU_arm10tdmi
yann@1:  
yann@1:  #undef SUBTARGET_EXTRA_LINK_SPEC
yann@1: -#define SUBTARGET_EXTRA_LINK_SPEC " -m armelf_linux_eabi"
yann@1: +#define SUBTARGET_EXTRA_LINK_SPEC " -m " TARGET_LINKER_EMULATION
yann@1:  
yann@1:  /* Use ld-linux.so.3 so that it will be possible to run "classic"
yann@1:     GNU/Linux binaries on an EABI system.  */
yann@1: Index: gcc-4.1.1/gcc/config/arm/bpabi.h
yann@1: ===================================================================
yann@1: --- gcc-4.1.1.orig/gcc/config/arm/bpabi.h
yann@1: +++ gcc-4.1.1/gcc/config/arm/bpabi.h
yann@1: @@ -33,9 +33,19 @@
yann@1:  #undef FPUTYPE_DEFAULT
yann@1:  #define FPUTYPE_DEFAULT FPUTYPE_VFP
yann@1:  
yann@1: +/*
yann@1: + * 'config.gcc' defines TARGET_BIG_ENDIAN_DEFAULT as 1 for arm*b-*
yann@1: + * (big endian) configurations.
yann@1: + */
yann@1: +#if TARGET_BIG_ENDIAN_DEFAULT
yann@1: +#define TARGET_ENDIAN_DEFAULT MASK_BIG_END
yann@1: +#else
yann@1: +#define TARGET_ENDIAN_DEFAULT 0
yann@1: +#endif
yann@1: +
yann@1:  /* EABI targets should enable interworking by default.  */
yann@1:  #undef TARGET_DEFAULT
yann@1: -#define TARGET_DEFAULT MASK_INTERWORK
yann@1: +#define TARGET_DEFAULT (MASK_INTERWORK | TARGET_ENDIAN_DEFAULT)
yann@1:  
yann@1:  /* The ARM BPABI functions return a boolean; they use no special
yann@1:     calling convention.  */