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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.
23 lines
663 B
C
23 lines
663 B
C
#if defined __riscv_float_abi_soft
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#define RISCV_FP_SUFFIX "-sf"
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#elif defined __riscv_float_abi_single
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#define RISCV_FP_SUFFIX "-sp"
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#elif defined __riscv_float_abi_double
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#define RISCV_FP_SUFFIX ""
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#endif
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#define LDSO_ARCH "riscv64" RISCV_FP_SUFFIX
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#define TPOFF_K 0
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#define REL_SYMBOLIC R_RISCV_64
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#define REL_PLT R_RISCV_JUMP_SLOT
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#define REL_RELATIVE R_RISCV_RELATIVE
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#define REL_COPY R_RISCV_COPY
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#define REL_DTPMOD R_RISCV_TLS_DTPMOD64
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#define REL_DTPOFF R_RISCV_TLS_DTPREL64
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#define REL_TPOFF R_RISCV_TLS_TPREL64
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#define CRTJMP(pc,sp) __asm__ __volatile__( \
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"mv sp, %1 ; jr %0" : : "r"(pc), "r"(sp) : "memory" )
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