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This commit is contained in:
Rui Ueyama 2020-12-17 08:05:53 +09:00
parent 0fb22932d5
commit 2ea3e32fa4
2 changed files with 21 additions and 12 deletions
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32
input_sections.cc
View File

@ -88,6 +88,12 @@ void InputSection::copy_buf() {
dynrel++;
}
break;
case R_ZERO:
if (sz == 4)
*(u32 *)loc = 0;
else
*(u64 *)loc = 0;
break;
case R_DYN:
memset(dynrel, 0, sizeof(*dynrel));
dynrel->r_offset = P;
@ -200,18 +206,20 @@ void InputSection::scan_relocations() {
}
if (sym.type == STT_OBJECT) {
sym.flags |= NEEDS_COPYREL;
rel_types[i] = R_ABS;
sym.flags |= NEEDS_COPYREL;
} else {
sym.flags |= NEEDS_PLT;
rel_types[i] = R_PLT;
sym.flags |= NEEDS_PLT;
}
break;
case R_X86_64_64:
if (sym.is_imported) {
sym.flags |= NEEDS_DYNSYM;
rel_types[i] = R_DYN;
sym.flags |= NEEDS_DYNSYM;
file->num_reldyn++;
} else if (sym.is_undef_weak) {
rel_types[i] = R_ZERO;
} else {
rel_types[i] = R_ABS;
if (config.pie)
@ -226,31 +234,31 @@ void InputSection::scan_relocations() {
}
if (sym.type == STT_OBJECT) {
sym.flags |= NEEDS_COPYREL;
rel_types[i] = R_PC;
sym.flags |= NEEDS_COPYREL;
} else {
sym.flags |= NEEDS_PLT;
rel_types[i] = R_PLT;
sym.flags |= NEEDS_PLT;
}
break;
case R_X86_64_GOT32:
sym.flags |= NEEDS_GOT;
rel_types[i] = R_GOT;
sym.flags |= NEEDS_GOT;
break;
case R_X86_64_GOTPC32:
sym.flags |= NEEDS_GOT;
rel_types[i] = R_GOTPC;
sym.flags |= NEEDS_GOT;
break;
case R_X86_64_GOTPCREL:
case R_X86_64_GOTPCRELX:
case R_X86_64_REX_GOTPCRELX:
sym.flags |= NEEDS_GOT;
rel_types[i] = R_GOTPCREL;
sym.flags |= NEEDS_GOT;
break;
case R_X86_64_PLT32:
if (sym.is_imported || sym.type == STT_GNU_IFUNC) {
sym.flags |= NEEDS_PLT;
rel_types[i] = R_PLT;
sym.flags |= NEEDS_PLT;
} else {
rel_types[i] = R_PC;
}
@ -260,8 +268,8 @@ void InputSection::scan_relocations() {
error(to_string(this) + ": TLSGD reloc not followed by PLT32");
if (sym.is_imported) {
sym.flags |= NEEDS_TLSGD;
rel_types[i] = R_TLSGD;
sym.flags |= NEEDS_TLSGD;
} else {
rel_types[i] = R_TLSGD_RELAX_LE;
i++;
@ -272,8 +280,8 @@ void InputSection::scan_relocations() {
error(to_string(this) + ": TLSLD reloc not followed by PLT32");
if (sym.is_imported) {
sym.flags |= NEEDS_TLSLD;
rel_types[i] = R_TLSLD;
sym.flags |= NEEDS_TLSLD;
} else {
rel_types[i] = R_TLSLD_RELAX_LE;
i++;
@ -286,8 +294,8 @@ void InputSection::scan_relocations() {
rel_types[i] = R_TPOFF;
break;
case R_X86_64_GOTTPOFF:
sym.flags |= NEEDS_GOTTPOFF;
rel_types[i] = R_GOTTPOFF;
sym.flags |= NEEDS_GOTTPOFF;
break;
default:
error(to_string(this) + ": unknown relocation: " + std::to_string(rel.r_type));

1
mold.h
View File

@ -233,6 +233,7 @@ protected:
enum RelType : u8 {
R_NONE,
R_ABS,
R_ZERO,
R_DYN,
R_PC,
R_GOT,