72 lines
2.4 KiB
Diff
72 lines
2.4 KiB
Diff
By Lennert Buytenhek <buytenh@wantstofly.org>
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Adds support for arm*b-linux* big-endian ARM targets
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See http://gcc.gnu.org/PR16350
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Index: gcc-4.2.3/gcc/config/arm/linux-elf.h
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===================================================================
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--- gcc-4.2.3.orig/gcc/config/arm/linux-elf.h 2007-09-01 17:28:30.000000000 +0200
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+++ gcc-4.2.3/gcc/config/arm/linux-elf.h 2008-05-21 13:45:53.349289241 +0200
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@@ -27,19 +27,33 @@
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#undef TARGET_VERSION
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#define TARGET_VERSION fputs (" (ARM GNU/Linux with ELF)", stderr);
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+/*
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+ * 'config.gcc' defines TARGET_BIG_ENDIAN_DEFAULT as 1 for arm*b-*
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+ * (big endian) configurations.
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+ */
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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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+
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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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#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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- { "marm", "mlittle-endian", "mhard-float", "mno-thumb-interwork" }
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+ { "marm", TARGET_ENDIAN_OPTION, "mhard-float", "mno-thumb-interwork" }
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/* Now we define the strings used to build the spec file. */
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#undef LIB_SPEC
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@@ -60,7 +74,7 @@
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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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Index: gcc-4.2.3/gcc/config.gcc
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===================================================================
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--- gcc-4.2.3.orig/gcc/config.gcc 2008-05-21 13:45:43.333288320 +0200
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+++ gcc-4.2.3/gcc/config.gcc 2008-05-21 13:45:53.353287795 +0200
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@@ -708,6 +708,11 @@
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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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tmake_file="${tmake_file} t-linux arm/t-arm"
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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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+ case ${target} in
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arm*-*-linux-*eabi)
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tm_file="$tm_file arm/bpabi.h arm/linux-eabi.h"
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tmake_file="$tmake_file arm/t-arm-elf arm/t-bpabi arm/t-linux-eabi"
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