3ad3d8a1d8
1) Allow selection of binutils/gcc/gdb/kernel headers to build, although some of the older tool patches probably need updating. 2) Rework gdb build so that remote debugging now works with gdbserver. 3) Misc. other package updates.3) Misc. other package updates.3) Misc. other package updates.
71 lines
2.4 KiB
Diff
71 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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diff -urN gcc-3.4.1-dist/gcc/config/arm/linux-elf.h gcc-3.4.1/gcc/config/arm/linux-elf.h
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--- gcc-3.4.1-dist/gcc/config/arm/linux-elf.h 2004-08-16 16:01:50.000000000 -0500
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+++ gcc-3.4.1/gcc/config/arm/linux-elf.h 2004-08-16 15:43:40.000000000 -0500
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@@ -30,17 +30,34 @@
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/* Do not assume anything about header files. */
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#define NO_IMPLICIT_EXTERN_C
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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 ARM_FLAG_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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/* Default is to use APCS-32 mode. */
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#undef TARGET_DEFAULT
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-#define TARGET_DEFAULT (ARM_FLAG_APCS_32 | ARM_FLAG_MMU_TRAPS)
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+#define TARGET_DEFAULT \
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+ ( ARM_FLAG_APCS_32 | \
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+ ARM_FLAG_MMU_TRAPS | \
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+ 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", "mapcs-32", "mno-thumb-interwork" }
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+ { "marm", TARGET_ENDIAN_OPTION, "mhard-float", "mapcs-32", "mno-thumb-interwork" }
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#define CPP_APCS_PC_DEFAULT_SPEC "-D__APCS_32__"
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@@ -101,7 +118,7 @@
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%{rdynamic:-export-dynamic} \
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%{!dynamic-linker:-dynamic-linker /lib/ld-linux.so.2} \
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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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#endif
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diff -urN gcc-3.4.1-dist/gcc/config.gcc gcc-3.4.1/gcc/config.gcc
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--- gcc-3.4.1-dist/gcc/config.gcc 2004-08-16 16:01:50.000000000 -0500
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+++ gcc-3.4.1/gcc/config.gcc 2004-08-16 16:01:25.000000000 -0500
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@@ -672,6 +672,11 @@
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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 arm/aout.h arm/arm.h"
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+ case $target in
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+ arm*b-*)
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+ tm_defines="TARGET_BIG_ENDIAN_DEFAULT=1 $tm_defines"
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+ ;;
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+ esac
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tmake_file="t-slibgcc-elf-ver t-linux arm/t-linux"
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extra_parts="crtbegin.o crtbeginS.o crtend.o crtendS.o"
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gnu_ld=yes
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