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68 lines
2.1 KiB
68 lines
2.1 KiB
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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--- gcc-3.4.1-dist/gcc/config/arm/linux-elf.h |
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+++ gcc-3.4.1/gcc/config/arm/linux-elf.h |
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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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--- gcc-3.4.1-dist/gcc/config.gcc |
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+++ gcc-3.4.1/gcc/config.gcc |
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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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