arch/x32/reloc.h

   1 #define LDSO_ARCH "x32"
   2
   3 /* FIXME: x32 is very strange in its use of 64-bit relocation types in
   4  * a 32-bit environment. As long as the memory at reloc_addr is
   5  * zero-filled prior to relocations, just treating 64-bit relocations
   6  * as operating on 32-bit slots should be fine, but this should be
   7  * checked. In particular, R_X86_64_64, R_X86_64_DTPOFF64, and
   8  * R_X86_64_TPOFF64 may need checking. */
   9
  10 /* The R_X86_64_64, R_X86_64_DTPOFF32, and R_X86_64_TPOFF32 reloc types
  11  * were previously mapped in the switch table form of this file; however,
  12  * they do not seem to be used/usable for anything. If needed, new
  13  * mappings will have to be added. */
  14
  15 #define REL_SYMBOLIC    R_X86_64_32
  16 #define REL_OFFSET      R_X86_64_PC32
  17 #define REL_GOT         R_X86_64_GLOB_DAT
  18 #define REL_PLT         R_X86_64_JUMP_SLOT
  19 #define REL_RELATIVE    R_X86_64_RELATIVE
  20 #define REL_COPY        R_X86_64_COPY
  21 #define REL_DTPMOD      R_X86_64_DTPMOD64
  22 #define REL_DTPOFF      R_X86_64_DTPOFF64
  23 #define REL_TPOFF       R_X86_64_TPOFF64
  24
  25 #define CRTJMP(pc,sp) __asm__ __volatile__( \
  26         "mov %1,%%esp ; jmp *%0" : : "r"((uint64_t)(uintptr_t)pc), "r"(sp) : "memory" )
  27
  28 #define GETFUNCSYM(fp, sym, got) __asm__ ( \
  29         ".hidden " #sym "\n" \
  30         "       lea " #sym "(%%rip),%0\n" \
  31         : "=r"(*fp) : : "memory" )