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532cf290d0
The RISC-V port contains a crti.S that simply contains a link to
PREINIT_FUNCTION (when defined). As this should be entirely generic,
Joseph Myers suggested that we update the generic init_array version to
contain this. Since RISC-V is the only user of init_array this won't
break any existing ports.
2018-01-29 Palmer Dabbelt <palmer@sifive.com>
* sysdeps/init_array/crti.S (.section .init_array): Add
PREINIT_FUNCTION when defined.
28 lines
840 B
ArmAsm
28 lines
840 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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#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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