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adf94c1966
this was one of the main instances of ugly code duplication: all archs use basically the same types of relocations, but roughly equivalent logic was duplicated for each arch to account for the different naming and numbering of relocation types and variation in whether REL or RELA records are used. as an added bonus, both REL and RELA are now supported on all archs, regardless of which is used by the standard toolchain.
41 lines
989 B
C
41 lines
989 B
C
#include <stdint.h>
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#include <string.h>
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#include <elf.h>
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#define LDSO_ARCH "x32"
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/* FIXME: x32 is very strange in its use of 64-bit relocation types in
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* a 32-bit environment. As long as the memory at reloc_addr is
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* zero-filled prior to relocations, just treating 64-bit relocations
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* as operating on 32-bit slots should be fine, but this should be
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* checked. In particular, R_X86_64_64, R_X86_64_DTPOFF64, and
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* R_X86_64_TPOFF64 may need checking. */
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static int remap_rel(int type)
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{
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switch(type) {
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case R_X86_64_64:
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case R_X86_64_32:
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return REL_SYMBOLIC;
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case R_X86_64_PC32:
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return REL_OFFSET;
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case R_X86_64_GLOB_DAT:
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return REL_GOT;
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case R_X86_64_JUMP_SLOT:
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return REL_PLT;
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case R_X86_64_RELATIVE:
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return REL_RELATIVE;
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case R_X86_64_COPY:
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return REL_COPY;
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case R_X86_64_DTPMOD64:
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return REL_DTPMOD;
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case R_X86_64_DTPOFF64:
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case R_X86_64_DTPOFF32:
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return REL_DTPOFF;
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case R_X86_64_TPOFF64:
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case R_X86_64_TPOFF32:
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return REL_TPOFF;
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}
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return 0;
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}
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