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reloc_apply.h (1154B)

      1 #ifndef KIT_OBJ_RELOC_APPLY_H
      2 #define KIT_OBJ_RELOC_APPLY_H
      3 
      4 #include "core/core.h"
      5 #include "obj/obj.h"
      6 
      7 /* The single public byte-patcher entry: patch the relocation site at P_bytes
      8  * given the resolved addresses (S, P) and addend (A).  Shared verbatim by the
      9  * static linker, JIT linker, assembler, and emulator guest loader ("one
     10  * encoder, three loaders", doc/OBJ.md).  Defined in src/link/link_reloc_apply.c
     11  * — it dispatches arch-neutral kinds to reloc_apply_neutral() (below) and
     12  * instruction-immediate kinds to the per-arch LinkArchDesc.reloc_apply_insn,
     13  * the latter needing the link layer's link_arch_desc_for().  See
     14  * doc/plan/RELOC.md (WS-C). */
     15 void link_reloc_apply(Compiler*, RelocKind, u8* P_bytes, u64 S, i64 A, u64 P);
     16 
     17 /* Apply an arch-neutral (data-word / ULEB128) relocation kind.  Returns 1 if
     18  * `k` is a neutral kind it patched, 0 otherwise (the dispatcher then consults
     19  * the per-arch instruction encoders).  Pure obj-core: no link/arch dependency,
     20  * so it never touches `c` except to panic on the dynamic-only R_X64_COPY. */
     21 int reloc_apply_neutral(Compiler*, RelocKind, u8* P_bytes, u64 S, i64 A, u64 P);
     22 
     23 #endif