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f4349837d9
This supersedes the init_array sysdeps directory. It allows us to check for ELF_INITFINI in both C and assembler code, and skip DT_INIT and DT_FINI processing completely on newer architectures. A new header file is needed because <dl-machine.h> is incompatible with assembler code. <sysdep.h> is compatible with assembler code, but it cannot be included in all assembler files because on some architectures, it redefines register names, and some assembler files conflict with that. <elf-initfini.h> is replicated for legacy architectures which need DT_INIT/DT_FINI support. New architectures follow the generic default and disable it.
34 lines
957 B
ArmAsm
34 lines
957 B
ArmAsm
/* Dummy crti file.
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In this configuration, crti.o and crtn.o are both empty because the
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.init_array/.fini_array sections are used exclusively.
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Older ports cannot use this because even if the linker used to
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build libc itself has .init_array support, we don't want to produce
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a crt[in].o that presume a linker that new will be used to link
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other things later.
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But new configurations without compatibility concerns for
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toolchains without .init_array support can use this to avoid the
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superfluous .init and .fini boilerplate code. */
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#include <elf-initfini.h>
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#if ELF_INITFINI
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# error Cannot use default crti.S because it lacks _init code
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#endif
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#ifdef PREINIT_FUNCTION
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# if PREINIT_FUNCTION_WEAK
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# error PREINIT_FUNCTION_WEAK is unsupported
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# endif
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/* This arranges for PREINIT_FUNCTION to be called upon loading a library that
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contains crti.o. */
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.section .init_array,"a",%init_array
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.dc.a PREINIT_FUNCTION
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#endif
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