nsz Git - musl/blob - arch/i386/reloc.h

   1 #include <string.h>
   2 #include <elf.h>
   3
   4 #define ETC_LDSO_PATH "/etc/ld-musl-i386.path"
   5
   6 #define IS_COPY(x) ((x)==R_386_COPY)
   7 #define IS_PLT(x) ((x)==R_386_JMP_SLOT)
   8
   9 static inline void do_single_reloc(
  10         struct dso *self, unsigned char *base_addr,
  11         size_t *reloc_addr, int type, size_t addend,
  12         Sym *sym, size_t sym_size,
  13         struct symdef def, size_t sym_val)
  14 {
  15         switch(type) {
  16         case R_386_32:
  17                 *reloc_addr += sym_val;
  18                 break;
  19         case R_386_PC32:
  20                 *reloc_addr += sym_val - (size_t)reloc_addr;
  21                 break;
  22         case R_386_GLOB_DAT:
  23         case R_386_JMP_SLOT:
  24                 *reloc_addr = sym_val;
  25                 break;
  26         case R_386_RELATIVE:
  27                 *reloc_addr += (size_t)base_addr;
  28                 break;
  29         case R_386_COPY:
  30                 memcpy(reloc_addr, (void *)sym_val, sym_size);
  31                 break;
  32         case R_386_TLS_DTPMOD32:
  33                 *reloc_addr = def.dso ? def.dso->tls_id : self->tls_id;
  34                 break;
  35         case R_386_TLS_DTPOFF32:
  36                 *reloc_addr = def.sym->st_value;
  37                 break;
  38         case R_386_TLS_TPOFF:
  39                 *reloc_addr += def.sym
  40                         ? def.sym->st_value - def.dso->tls_offset
  41                         : 0 - self->tls_offset;
  42                 break;
  43         case R_386_TLS_TPOFF32:
  44                 *reloc_addr += def.sym
  45                         ? def.dso->tls_offset - def.sym->st_value
  46                         : self->tls_offset;
  47                 break;
  48         }
  49 }