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0a48860c27
Author: Alex Suykov <alex.suykov@gmail.com> Author: Aric Belsito <lluixhi@gmail.com> Author: Drew DeVault <sir@cmpwn.com> Author: Michael Clark <mjc@sifive.com> Author: Michael Forney <mforney@mforney.org> Author: Stefan O'Rear <sorear2@gmail.com> This port has involved the work of many people over several years. I have tried to ensure that everyone with substantial contributions has been credited above; if any omissions are found they will be noted later in an update to the authors/contributors list in the COPYRIGHT file. The version committed here comes from the riscv/riscv-musl repo's commit 3fe7e2c75df78eef42dcdc352a55757729f451e2, with minor changes by me for issues found during final review: - a_ll/a_sc atomics are removed (according to the ISA spec, lr/sc are not safe to use in separate inline asm fragments) - a_cas[_p] is fixed to be a memory barrier - the call from the _start assembly into the C part of crt1/ldso is changed to allow for the possibility that the linker does not place them nearby each other. - DTP_OFFSET is defined correctly so that local-dynamic TLS works - reloc.h LDSO_ARCH logic is simplified and made explicit. - unused, non-functional crti/n asm files are removed. - an empty .sdata section is added to crt1 so that the __global_pointer reference is resolvable. - indentation style errors in some asm files are fixed.
20 lines
379 B
C
20 lines
379 B
C
__asm__(
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".section .sdata,\"aw\"\n"
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".text\n"
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".global " START "\n"
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".type " START ",%function\n"
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START ":\n"
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".weak __global_pointer$\n"
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".hidden __global_pointer$\n"
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".option push\n"
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".option norelax\n\t"
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"lla gp, __global_pointer$\n"
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".option pop\n\t"
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"mv a0, sp\n"
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".weak _DYNAMIC\n"
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".hidden _DYNAMIC\n\t"
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"lla a1, _DYNAMIC\n\t"
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"andi sp, sp, -16\n\t"
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"tail " START "_c"
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);
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