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fc85fb3860
the 32-bit pc-relative address for stage 2 of dynamic linker entry was wrongly loaded with a zero-extending load instead of sign-extending load, resulting in an invalid jump if the offset happened to be negative, which depends on the linker's ordering of text sections.
33 lines
866 B
C
33 lines
866 B
C
#include <endian.h>
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#if __BYTE_ORDER == __LITTLE_ENDIAN
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#define ENDIAN_SUFFIX "le"
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#else
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#define ENDIAN_SUFFIX ""
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#endif
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#define LDSO_ARCH "powerpc64" ENDIAN_SUFFIX
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#define TPOFF_K (-0x7000)
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#define REL_SYMBOLIC R_PPC64_ADDR64
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#define REL_GOT R_PPC64_GLOB_DAT
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#define REL_PLT R_PPC64_JMP_SLOT
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#define REL_RELATIVE R_PPC64_RELATIVE
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#define REL_COPY R_PPC64_COPY
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#define REL_DTPMOD R_PPC64_DTPMOD64
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#define REL_DTPOFF R_PPC64_DTPREL64
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#define REL_TPOFF R_PPC64_TPREL64
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#define CRTJMP(pc,sp) __asm__ __volatile__( \
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"mr 1,%1; mr 12,%0; mtctr 12; bctrl" : : "r"(pc), "r"(sp) : "memory" )
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#define GETFUNCSYM(fp, sym, got) __asm__ ( \
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".hidden " #sym " \n" \
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" bl 1f \n" \
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" .long " #sym "-. \n" \
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"1: mflr %1 \n" \
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" lwa %0, 0(%1) \n" \
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" add %0, %0, %1 \n" \
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: "=r"(*(fp)), "=r"((long){0}) : : "memory", "lr" )
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