re PR target/16350 (gcc only understands little endian ARM systems)
PR target/16350 * config.gcc: For arm*b-* define TARGET_BIG_ENDIAN_DEFAULT. * config/arm/linux-elf.h (TARGET_ENDIAN_DEFAULT): Define based on TARGET_BIG_ENDIAN_DEFAULT. Use for MULTILIB_DEFAULTS. (TARGET_DEFAULT): Set according to TARGET_ENDIAN_DEFAULT. (LINUX_TARGET_LINK_SPEC): Pass -mlittle-endian on to the assembler. * config/arm/linux-eabi.h (TARGET_LINKER_EMULATION): Set according to TARGET_BIG_ENDIAN_DEFAULT. (SUBTARGET_EXTRA_LINK_SPEC): Likewise. * gcc/config/arm/bpabi.h (TARGET_DEFAULT_MASK): Set according to TARGET_BIG_ENDIAN_DEFAULT. From-SVN: r129999
This commit is contained in:
Bernhard Fischer
Nick Clifton
parent
c4e2c79ee4
commit
d3a9662cad
@ -1,3 +1,17 @@
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2007-11-07 <aldot@gcc.gnu.org> Bernhard Fischer
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PR target/16350
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* config.gcc: For arm*b-* define TARGET_BIG_ENDIAN_DEFAULT.
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* config/arm/linux-elf.h (TARGET_ENDIAN_DEFAULT): Define based on
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TARGET_BIG_ENDIAN_DEFAULT. Use for MULTILIB_DEFAULTS.
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(TARGET_DEFAULT): Set according to TARGET_ENDIAN_DEFAULT.
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(LINUX_TARGET_LINK_SPEC): Pass -mlittle-endian on to the assembler.
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* config/arm/linux-eabi.h (TARGET_LINKER_EMULATION): Set according
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to TARGET_BIG_ENDIAN_DEFAULT.
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(SUBTARGET_EXTRA_LINK_SPEC): Likewise.
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* gcc/config/arm/bpabi.h (TARGET_DEFAULT_MASK): Set according
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to TARGET_BIG_ENDIAN_DEFAULT.
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2007-11-07 Diego Novillo <dnovillo@google.com>
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* tree.h (struct tree_struct_field_tag): Move field
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@ -704,6 +704,11 @@ arm*-*-netbsd*)
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;;
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arm*-*-linux*) # ARM GNU/Linux with ELF
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tm_file="dbxelf.h elfos.h linux.h arm/elf.h arm/linux-gas.h arm/linux-elf.h"
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case $target in
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arm*b-*)
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tm_defines="${tm_defines} TARGET_BIG_ENDIAN_DEFAULT=1"
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;;
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esac
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tmake_file="${tmake_file} t-linux arm/t-arm"
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case ${target} in
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arm*-*-linux-*eabi)
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@ -29,12 +29,20 @@
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#define TARGET_UNWIND_INFO 1
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/* Section 4.1 of the AAPCS requires the use of VFP format. */
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#undef FPUTYPE_DEFAULT
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#undef FPUTYPE_DEFAULT
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#define FPUTYPE_DEFAULT FPUTYPE_VFP
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/* TARGET_BIG_ENDIAN_DEFAULT is set in
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config.gcc for big endian configurations. */
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#if TARGET_BIG_ENDIAN_DEFAULT
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#define TARGET_ENDIAN_DEFAULT MASK_BIG_END
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#else
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#define TARGET_ENDIAN_DEFAULT 0
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#endif
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/* EABI targets should enable interworking by default. */
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#undef TARGET_DEFAULT
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#define TARGET_DEFAULT MASK_INTERWORK
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#undef TARGET_DEFAULT
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#define TARGET_DEFAULT (MASK_INTERWORK | TARGET_ENDIAN_DEFAULT)
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/* The ARM BPABI functions return a boolean; they use no special
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calling convention. */
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@ -44,11 +52,11 @@
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#define TARGET_LIB_INT_CMP_BIASED !TARGET_BPABI
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/* Tell the assembler to build BPABI binaries. */
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#undef SUBTARGET_EXTRA_ASM_SPEC
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#undef SUBTARGET_EXTRA_ASM_SPEC
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#define SUBTARGET_EXTRA_ASM_SPEC "%{mabi=apcs-gnu|mabi=atpcs:-meabi=gnu;:-meabi=4}"
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/* The generic link spec in elf.h does not support shared libraries. */
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#undef LINK_SPEC
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#undef LINK_SPEC
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#define LINK_SPEC "%{mbig-endian:-EB} %{mlittle-endian:-EL} " \
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"%{static:-Bstatic} %{shared:-shared} %{symbolic:-Bsymbolic} " \
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"-X"
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@ -21,7 +21,7 @@
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/* On EABI GNU/Linux, we want both the BPABI builtins and the
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GNU/Linux builtins. */
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#undef TARGET_OS_CPP_BUILTINS
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#undef TARGET_OS_CPP_BUILTINS
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#define TARGET_OS_CPP_BUILTINS() \
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do \
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{ \
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@ -32,31 +32,40 @@
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/* We default to a soft-float ABI so that binaries can run on all
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target hardware. */
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#undef TARGET_DEFAULT_FLOAT_ABI
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#undef TARGET_DEFAULT_FLOAT_ABI
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#define TARGET_DEFAULT_FLOAT_ABI ARM_FLOAT_ABI_SOFT
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/* We default to the "aapcs-linux" ABI so that enums are int-sized by
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default. */
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#undef ARM_DEFAULT_ABI
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#undef ARM_DEFAULT_ABI
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#define ARM_DEFAULT_ABI ARM_ABI_AAPCS_LINUX
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/* Default to armv5t so that thumb shared libraries work.
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The ARM10TDMI core is the default for armv5t, so set
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SUBTARGET_CPU_DEFAULT to achieve this. */
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#undef SUBTARGET_CPU_DEFAULT
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#undef SUBTARGET_CPU_DEFAULT
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#define SUBTARGET_CPU_DEFAULT TARGET_CPU_arm10tdmi
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#undef SUBTARGET_EXTRA_LINK_SPEC
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#define SUBTARGET_EXTRA_LINK_SPEC " -m armelf_linux_eabi"
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/* TARGET_BIG_ENDIAN_DEFAULT is set in
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config.gcc for big endian configurations. */
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#undef TARGET_LINKER_EMULATION
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#if TARGET_BIG_ENDIAN_DEFAULT
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#define TARGET_LINKER_EMULATION "armelfb_linux_eabi"
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#else
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#define TARGET_LINKER_EMULATION "armelf_linux_eabi"
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#endif
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#undef SUBTARGET_EXTRA_LINK_SPEC
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#define SUBTARGET_EXTRA_LINK_SPEC " -m " TARGET_LINKER_EMULATION
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/* Use ld-linux.so.3 so that it will be possible to run "classic"
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GNU/Linux binaries on an EABI system. */
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#undef GLIBC_DYNAMIC_LINKER
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#undef GLIBC_DYNAMIC_LINKER
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#define GLIBC_DYNAMIC_LINKER "/lib/ld-linux.so.3"
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/* At this point, bpabi.h will have clobbered LINK_SPEC. We want to
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use the GNU/Linux version, not the generic BPABI version. */
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#undef LINK_SPEC
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#undef LINK_SPEC
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#define LINK_SPEC LINUX_TARGET_LINK_SPEC
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/* Use the default LIBGCC_SPEC, not the version in linux-elf.h, as we
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@ -65,7 +74,7 @@
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/* Clear the instruction cache from `beg' to `end'. This makes an
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inline system call to SYS_cacheflush. */
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#undef CLEAR_INSN_CACHE
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#undef CLEAR_INSN_CACHE
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#define CLEAR_INSN_CACHE(BEG, END) \
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{ \
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register unsigned long _beg __asm ("a1") = (unsigned long) (BEG); \
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@ -30,12 +30,24 @@
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#undef TARGET_DEFAULT_FLOAT_ABI
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#define TARGET_DEFAULT_FLOAT_ABI ARM_FLOAT_ABI_HARD
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/* TARGET_BIG_ENDIAN_DEFAULT is set in
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config.gcc for big endian configurations. */
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#if TARGET_BIG_ENDIAN_DEFAULT
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#define TARGET_ENDIAN_DEFAULT MASK_BIG_END
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#define TARGET_ENDIAN_OPTION "mbig-endian"
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#define TARGET_LINKER_EMULATION "armelfb_linux"
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#else
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#define TARGET_ENDIAN_DEFAULT 0
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#define TARGET_ENDIAN_OPTION "mlittle-endian"
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#define TARGET_LINKER_EMULATION "armelf_linux"
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#endif
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#undef TARGET_DEFAULT
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#define TARGET_DEFAULT (0)
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#define TARGET_DEFAULT (TARGET_ENDIAN_DEFAULT)
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#define SUBTARGET_CPU_DEFAULT TARGET_CPU_arm6
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#define SUBTARGET_EXTRA_LINK_SPEC " -m armelf_linux -p"
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#define SUBTARGET_EXTRA_LINK_SPEC " -m " TARGET_LINKER_EMULATION " -p"
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#undef MULTILIB_DEFAULTS
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#define MULTILIB_DEFAULTS \
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@ -60,7 +72,7 @@
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%{rdynamic:-export-dynamic} \
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%{!dynamic-linker:-dynamic-linker " LINUX_DYNAMIC_LINKER "} \
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-X \
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%{mbig-endian:-EB}" \
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%{mbig-endian:-EB} %{mlittle-endian:-EL}" \
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SUBTARGET_EXTRA_LINK_SPEC
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#undef LINK_SPEC
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