mirror of git://git.musl-libc.org/musl
47 lines
1.1 KiB
C
47 lines
1.1 KiB
C
#include <stdint.h>
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#include <string.h>
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#include <elf.h>
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#define ETC_LDSO_PATH "/etc/ld-musl-x86_64.path"
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#define IS_COPY(x) ((x)==R_X86_64_COPY)
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#define IS_PLT(x) ((x)==R_X86_64_JUMP_SLOT)
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static inline void do_single_reloc(
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struct dso *self, unsigned char *base_addr,
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size_t *reloc_addr, int type, size_t addend,
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Sym *sym, size_t sym_size,
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struct symdef def, size_t sym_val)
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{
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switch(type) {
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case R_X86_64_GLOB_DAT:
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case R_X86_64_JUMP_SLOT:
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case R_X86_64_64:
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*reloc_addr = sym_val + addend;
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break;
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case R_X86_64_32:
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*(uint32_t *)reloc_addr = sym_val + addend;
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break;
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case R_X86_64_PC32:
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*reloc_addr = sym_val + addend - (size_t)reloc_addr + (size_t)base_addr;
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break;
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case R_X86_64_RELATIVE:
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*reloc_addr = (size_t)base_addr + addend;
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break;
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case R_X86_64_COPY:
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memcpy(reloc_addr, (void *)sym_val, sym_size);
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break;
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case R_X86_64_DTPMOD64:
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*reloc_addr = def.dso ? def.dso->tls_id : self->tls_id;
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break;
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case R_X86_64_DTPOFF64:
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*reloc_addr = def.sym->st_value + addend;
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break;
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case R_X86_64_TPOFF64:
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*reloc_addr = (def.sym
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? def.sym->st_value - def.dso->tls_offset
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: 0 - self->tls_offset) + addend;
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break;
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}
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}
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