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56583289b1
GCC 4.7 added support for ARM TLS descriptors. The binutils support is present in binutils 2.22. Thus, this patch removes the associated configure test as obsolete (leaving Makefile conditionals, as NaCl sets have-arm-tls-desc = no in its sysdeps fragment). Tested for ARM that installed shared libraries are unchanged by the patch. * sysdeps/arm/configure.ac (libc_cv_arm_tls_desc): Remove configure test. * sysdeps/arm/configure: Regenerated. * sysdeps/arm/Makefile [!have-arm-tls-desc] (have-arm-tls-desc): Define variable if not already defined.
80 lines
2.6 KiB
Makefile
80 lines
2.6 KiB
Makefile
gnulib-arch = $(elf-objpfx)libgcc-stubs.a
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static-gnulib-arch = $(elf-objpfx)libgcc-stubs.a
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# All supported build tools support TLS descriptors, but the OS may not.
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ifndef have-arm-tls-desc
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have-arm-tls-desc = yes
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endif
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ifeq ($(subdir),elf)
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sysdep-dl-routines += tlsdesc dl-tlsdesc
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sysdep_routines += aeabi_unwind_cpp_pr1 find_exidx
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sysdep-rtld-routines += aeabi_unwind_cpp_pr1
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shared-only-routines += aeabi_unwind_cpp_pr1
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$(objpfx)libgcc-stubs.a: $(objpfx)aeabi_unwind_cpp_pr1.os
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$(build-extra-lib)
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lib-noranlib: $(objpfx)libgcc-stubs.a
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ifeq ($(build-shared),yes)
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ifeq ($(have-arm-tls-desc),yes)
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tests += tst-armtlsdescloc tst-armtlsdescextnow tst-armtlsdescextlazy
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modules-names += tst-armtlsdesclocmod
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modules-names += tst-armtlsdescextlazymod tst-armtlsdescextnowmod
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CPPFLAGS-tst-armtlsdescextnowmod.c += -Dstatic=
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CPPFLAGS-tst-armtlsdescextlazymod.c += -Dstatic=
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CFLAGS-tst-armtlsdesclocmod.c += -mtls-dialect=gnu2
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CFLAGS-tst-armtlsdescextnowmod.c += -mtls-dialect=gnu2
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CFLAGS-tst-armtlsdescextlazymod.c += -mtls-dialect=gnu2
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LDFLAGS-tst-armtlsdescextnowmod.so += -Wl,-z,now
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tst-armtlsdescloc-ENV = LD_BIND_NOW=1
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tst-armtlsdescextnow-ENV = LD_BIND_NOW=1
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tst-armtlsdescextlazy-ENV = LD_BIND_NOW=1
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$(objpfx)tst-armtlsdescloc: $(objpfx)tst-armtlsdesclocmod.so
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$(objpfx)tst-armtlsdescextnow: $(objpfx)tst-armtlsdescextnowmod.so
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$(objpfx)tst-armtlsdescextlazy: $(objpfx)tst-armtlsdescextlazymod.so
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endif
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endif
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endif
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ifeq ($(subdir),csu)
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# get offset to rtld_global._dl_hwcap
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gen-as-const-headers += rtld-global-offsets.sym tlsdesc.sym
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aeabi_constants = aeabi_lcsts aeabi_sighandlers aeabi_math
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aeabi_routines = aeabi_assert aeabi_localeconv aeabi_errno_addr \
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aeabi_mb_cur_max aeabi_atexit aeabi_memclr aeabi_memcpy \
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aeabi_memmove aeabi_memset \
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aeabi_read_tp libc-aeabi_read_tp
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sysdep_routines += $(aeabi_constants) $(aeabi_routines)
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static-only-routines += $(aeabi_constants) aeabi_read_tp
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shared-only-routines += libc-aeabi_read_tp
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# In order for unwinding to fail when it falls out of main, we need a
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# cantunwind marker. There's one in start.S. To make sure we reach it, add
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# unwind tables for __libc_start_main.
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CFLAGS-libc-start.c += -fexceptions
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sysdep_routines += arm-unwind-resume
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shared-only-routines += arm-unwind-resume
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endif
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ifeq ($(subdir),gmon)
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sysdep_routines += arm-mcount
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endif
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ifeq ($(subdir),debug)
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CFLAGS-backtrace.c += -funwind-tables
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endif
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ifeq ($(subdir),rt)
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librt-sysdep_routines += rt-aeabi_unwind_cpp_pr1 rt-arm-unwind-resume
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librt-shared-only-routines += rt-aeabi_unwind_cpp_pr1 rt-arm-unwind-resume
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endif
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ifeq ($(subdir),nptl)
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libpthread-sysdep_routines += pt-arm-unwind-resume
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libpthread-shared-only-routines += pt-arm-unwind-resume
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endif
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