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[elf2] Sort output sections. 

Sort by:
ALLOC
ALLOC && NOBITS
ALLOC & EXEC
ALLOC & EXEC && NOBITS
ALLOC & WRITE
ALLOC & WRITE && NOBITS
<nothing> (ignoring NOBITS)

The dynamic section is finalized early because it adds strings to the dynamic string table, which comes before the dynamic table.

llvm-svn: 248845
This commit is contained in:
Michael J. Spencer 2015-09-29 23:05:40 +00:00
parent 1500a90093
commit fe07bd67fd
22 changed files with 265 additions and 217 deletions
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3
lld/ELF/OutputSections.cpp
View File

@ -183,6 +183,9 @@ DynamicSection<ELFT>::DynamicSection(SymbolTable &SymTab,
}
template <class ELFT> void DynamicSection<ELFT>::finalize() {
if (Header.sh_size)
return; // Already finalized.
typename Base::HeaderT &Header = this->Header;
Header.sh_link = DynStrSec.getSectionIndex();

34
lld/ELF/Writer.cpp
View File

@ -389,12 +389,42 @@ template <class ELFT> void Writer<ELFT>::createSections() {
OutputSections.begin(), OutputSections.end(),
[](OutputSectionBase<ELFT::Is64Bits> *A,
OutputSectionBase<ELFT::Is64Bits> *B) {
// Place SHF_ALLOC sections first.
return (A->getFlags() & SHF_ALLOC) && !(B->getFlags() & SHF_ALLOC);
// Sort by ALLOC < (ALLOC & NOBITS) < (ALLOC & EXECUTE) <
// (ALLOC & WRITE) < (ALLOC & WRITE & NOBITS)
uintX_t AFlags =
A->getFlags() & (SHF_ALLOC | SHF_EXECINSTR | SHF_WRITE);
uintX_t BFlags =
B->getFlags() & (SHF_ALLOC | SHF_EXECINSTR | SHF_WRITE);
auto rank = [](OutputSectionBase<ELFT::Is64Bits> *Sec) {
switch (Sec->getFlags() & (SHF_ALLOC | SHF_EXECINSTR | SHF_WRITE)) {
case SHF_ALLOC:
return 0;
case SHF_ALLOC | SHF_EXECINSTR:
return 1;
case SHF_ALLOC | SHF_EXECINSTR | SHF_WRITE:
return 2;
case SHF_ALLOC | SHF_WRITE:
return 3;
case 0:
return 4;
default:
error("Unexpected section flags");
}
};
// Ignore SHT_NOBITS for non-allocated sections.
if (AFlags && AFlags == BFlags)
return A->getType() != SHT_NOBITS && B->getType() == SHT_NOBITS;
return rank(A) < rank(B);
});
for (unsigned I = 0, N = OutputSections.size(); I < N; ++I)
OutputSections[I]->setSectionIndex(I + 1);
// Fill the DynStrSec early.
DynamicSec.finalize();
}
template <class ELFT>

36
lld/test/elf2/basic-aarch64.s
View File

@ -53,22 +53,6 @@ _start:
# CHECK-NEXT: }
# CHECK-NEXT: Section {
# CHECK-NEXT: Index: 1
# CHECK-NEXT: Name: .bss
# CHECK-NEXT: Type: SHT_NOBITS (0x8)
# CHECK-NEXT: Flags [ (0x3)
# CHECK-NEXT: SHF_ALLOC (0x2)
# CHECK-NEXT: SHF_WRITE (0x1)
# CHECK-NEXT: ]
# CHECK-NEXT: Address: 0x11000
# CHECK-NEXT: Offset: 0x1000
# CHECK-NEXT: Size: 0
# CHECK-NEXT: Link: 0
# CHECK-NEXT: Info: 0
# CHECK-NEXT: AddressAlignment: 4
# CHECK-NEXT: EntrySize: 0
# CHECK-NEXT: }
# CHECK-NEXT: Section {
# CHECK-NEXT: Index: 2
# CHECK-NEXT: Name: .text
# CHECK-NEXT: Type: SHT_PROGBITS (0x1)
# CHECK-NEXT: Flags [ (0x6)
@ -84,7 +68,7 @@ _start:
# CHECK-NEXT: EntrySize: 0
# CHECK-NEXT: }
# CHECK-NEXT: Section {
# CHECK-NEXT: Index: 3
# CHECK-NEXT: Index: 2
# CHECK-NEXT: Name: .data
# CHECK-NEXT: Type: SHT_PROGBITS (0x1)
# CHECK-NEXT: Flags [ (0x3)
@ -100,6 +84,22 @@ _start:
# CHECK-NEXT: EntrySize: 0
# CHECK-NEXT: }
# CHECK-NEXT: Section {
# CHECK-NEXT: Index: 3
# CHECK-NEXT: Name: .bss
# CHECK-NEXT: Type: SHT_NOBITS (0x8)
# CHECK-NEXT: Flags [ (0x3)
# CHECK-NEXT: SHF_ALLOC (0x2)
# CHECK-NEXT: SHF_WRITE (0x1)
# CHECK-NEXT: ]
# CHECK-NEXT: Address: 0x1100C
# CHECK-NEXT: Offset: 0x100C
# CHECK-NEXT: Size: 0
# CHECK-NEXT: Link: 0
# CHECK-NEXT: Info: 0
# CHECK-NEXT: AddressAlignment: 4
# CHECK-NEXT: EntrySize: 0
# CHECK-NEXT: }
# CHECK-NEXT: Section {
# CHECK-NEXT: Index: 4
# CHECK-NEXT: Name: .symtab
# CHECK-NEXT: Type: SHT_SYMTAB (0x2)
@ -145,7 +145,7 @@ _start:
# CHECK-NEXT: Binding: Local (0x0)
# CHECK-NEXT: Type: None (0x0)
# CHECK-NEXT: Other: 0
# CHECK-NEXT: Section: .text (0x2)
# CHECK-NEXT: Section: .text
# CHECK-NEXT: }
# CHECK-NEXT: Symbol {
# CHECK-NEXT: Name: _start (7)

34
lld/test/elf2/basic.s
View File

@ -54,22 +54,6 @@ _start:
# CHECK-NEXT: }
# CHECK-NEXT: Section {
# CHECK-NEXT: Index: 1
# CHECK-NEXT: Name: .bss
# CHECK-NEXT: Type: SHT_NOBITS (0x8)
# CHECK-NEXT: Flags [ (0x3)
# CHECK-NEXT: SHF_ALLOC (0x2)
# CHECK-NEXT: SHF_WRITE (0x1)
# CHECK-NEXT: ]
# CHECK-NEXT: Address: 0x11000
# CHECK-NEXT: Offset: 0x1000
# CHECK-NEXT: Size: 0
# CHECK-NEXT: Link: 0
# CHECK-NEXT: Info: 0
# CHECK-NEXT: AddressAlignment: 4
# CHECK-NEXT: EntrySize: 0
# CHECK-NEXT: }
# CHECK-NEXT: Section {
# CHECK-NEXT: Index: 2
# CHECK-NEXT: Name: .text
# CHECK-NEXT: Type: SHT_PROGBITS (0x1)
# CHECK-NEXT: Flags [ (0x6)
@ -85,7 +69,7 @@ _start:
# CHECK-NEXT: EntrySize: 0
# CHECK-NEXT: }
# CHECK-NEXT: Section {
# CHECK-NEXT: Index: 3
# CHECK-NEXT: Index: 2
# CHECK-NEXT: Name: .data
# CHECK-NEXT: Type: SHT_PROGBITS (0x1)
# CHECK-NEXT: Flags [ (0x3)
@ -101,6 +85,22 @@ _start:
# CHECK-NEXT: EntrySize: 0
# CHECK-NEXT: }
# CHECK-NEXT: Section {
# CHECK-NEXT: Index: 3
# CHECK-NEXT: Name: .bss
# CHECK-NEXT: Type: SHT_NOBITS (0x8)
# CHECK-NEXT: Flags [ (0x3)
# CHECK-NEXT: SHF_ALLOC (0x2)
# CHECK-NEXT: SHF_WRITE (0x1)
# CHECK-NEXT: ]
# CHECK-NEXT: Address: 0x11010
# CHECK-NEXT: Offset: 0x1010
# CHECK-NEXT: Size: 0
# CHECK-NEXT: Link: 0
# CHECK-NEXT: Info: 0
# CHECK-NEXT: AddressAlignment: 4
# CHECK-NEXT: EntrySize: 0
# CHECK-NEXT: }
# CHECK-NEXT: Section {
# CHECK-NEXT: Index: 4
# CHECK-NEXT: Name: .symtab
# CHECK-NEXT: Type: SHT_SYMTAB (0x2)

34
lld/test/elf2/basic32.s
View File

@ -52,22 +52,6 @@ _start:
# CHECK-NEXT: }
# CHECK-NEXT: Section {
# CHECK-NEXT: Index: 1
# CHECK-NEXT: Name: .bss
# CHECK-NEXT: Type: SHT_NOBITS (0x8)
# CHECK-NEXT: Flags [ (0x3)
# CHECK-NEXT: SHF_ALLOC (0x2)
# CHECK-NEXT: SHF_WRITE (0x1)
# CHECK-NEXT: ]
# CHECK-NEXT: Address: 0x11000
# CHECK-NEXT: Offset: 0x1000
# CHECK-NEXT: Size: 0
# CHECK-NEXT: Link: 0
# CHECK-NEXT: Info: 0
# CHECK-NEXT: AddressAlignment: 4
# CHECK-NEXT: EntrySize: 0
# CHECK-NEXT: }
# CHECK-NEXT: Section {
# CHECK-NEXT: Index: 2
# CHECK-NEXT: Name: .text
# CHECK-NEXT: Type: SHT_PROGBITS (0x1)
# CHECK-NEXT: Flags [ (0x6)
@ -83,7 +67,7 @@ _start:
# CHECK-NEXT: EntrySize: 0
# CHECK-NEXT: }
# CHECK-NEXT: Section {
# CHECK-NEXT: Index: 3
# CHECK-NEXT: Index: 2
# CHECK-NEXT: Name: .data
# CHECK-NEXT: Type: SHT_PROGBITS (0x1)
# CHECK-NEXT: Flags [ (0x3)
@ -99,6 +83,22 @@ _start:
# CHECK-NEXT: EntrySize: 0
# CHECK-NEXT: }
# CHECK-NEXT: Section {
# CHECK-NEXT: Index: 3
# CHECK-NEXT: Name: .bss
# CHECK-NEXT: Type: SHT_NOBITS (0x8)
# CHECK-NEXT: Flags [ (0x3)
# CHECK-NEXT: SHF_ALLOC (0x2)
# CHECK-NEXT: SHF_WRITE (0x1)
# CHECK-NEXT: ]
# CHECK-NEXT: Address: 0x1100C
# CHECK-NEXT: Offset: 0x100C
# CHECK-NEXT: Size: 0
# CHECK-NEXT: Link: 0
# CHECK-NEXT: Info: 0
# CHECK-NEXT: AddressAlignment: 4
# CHECK-NEXT: EntrySize: 0
# CHECK-NEXT: }
# CHECK-NEXT: Section {
# CHECK-NEXT: Index: 4
# CHECK-NEXT: Name: .symtab
# CHECK-NEXT: Type: SHT_SYMTAB

34
lld/test/elf2/basic32be.s
View File

@ -52,22 +52,6 @@ _start:
# CHECK-NEXT: }
# CHECK-NEXT: Section {
# CHECK-NEXT: Index: 1
# CHECK-NEXT: Name: .bss
# CHECK-NEXT: Type: SHT_NOBITS (0x8)
# CHECK-NEXT: Flags [ (0x3)
# CHECK-NEXT: SHF_ALLOC (0x2)
# CHECK-NEXT: SHF_WRITE (0x1)
# CHECK-NEXT: ]
# CHECK-NEXT: Address: 0x11000
# CHECK-NEXT: Offset: 0x1000
# CHECK-NEXT: Size: 0
# CHECK-NEXT: Link: 0
# CHECK-NEXT: Info: 0
# CHECK-NEXT: AddressAlignment: 4
# CHECK-NEXT: EntrySize: 0
# CHECK-NEXT: }
# CHECK-NEXT: Section {
# CHECK-NEXT: Index: 2
# CHECK-NEXT: Name: .text
# CHECK-NEXT: Type: SHT_PROGBITS (0x1)
# CHECK-NEXT: Flags [ (0x6)
@ -83,7 +67,7 @@ _start:
# CHECK-NEXT: EntrySize: 0
# CHECK-NEXT: }
# CHECK-NEXT: Section {
# CHECK-NEXT: Index: 3
# CHECK-NEXT: Index: 2
# CHECK-NEXT: Name: .data
# CHECK-NEXT: Type: SHT_PROGBITS (0x1)
# CHECK-NEXT: Flags [ (0x3)
@ -99,6 +83,22 @@ _start:
# CHECK-NEXT: EntrySize: 0
# CHECK-NEXT: }
# CHECK-NEXT: Section {
# CHECK-NEXT: Index: 3
# CHECK-NEXT: Name: .bss
# CHECK-NEXT: Type: SHT_NOBITS (0x8)
# CHECK-NEXT: Flags [ (0x3)
# CHECK-NEXT: SHF_ALLOC (0x2)
# CHECK-NEXT: SHF_WRITE (0x1)
# CHECK-NEXT: ]
# CHECK-NEXT: Address: 0x1100C
# CHECK-NEXT: Offset: 0x100C
# CHECK-NEXT: Size: 0
# CHECK-NEXT: Link: 0
# CHECK-NEXT: Info: 0
# CHECK-NEXT: AddressAlignment: 4
# CHECK-NEXT: EntrySize: 0
# CHECK-NEXT: }
# CHECK-NEXT: Section {
# CHECK-NEXT: Index: 4
# CHECK-NEXT: Name: .symtab
# CHECK-NEXT: Type: SHT_SYMTAB

36
lld/test/elf2/basic64be.s
View File

@ -59,22 +59,6 @@ _start:
# CHECK-NEXT: }
# CHECK-NEXT: Section {
# CHECK-NEXT: Index: 1
# CHECK-NEXT: Name: .bss
# CHECK-NEXT: Type: SHT_NOBITS (0x8)
# CHECK-NEXT: Flags [ (0x3)
# CHECK-NEXT: SHF_ALLOC (0x2)
# CHECK-NEXT: SHF_WRITE (0x1)
# CHECK-NEXT: ]
# CHECK-NEXT: Address: 0x11000
# CHECK-NEXT: Offset: 0x1000
# CHECK-NEXT: Size: 0
# CHECK-NEXT: Link: 0
# CHECK-NEXT: Info: 0
# CHECK-NEXT: AddressAlignment: 4
# CHECK-NEXT: EntrySize: 0
# CHECK-NEXT: }
# CHECK-NEXT: Section {
# CHECK-NEXT: Index: 2
# CHECK-NEXT: Name: .text
# CHECK-NEXT: Type: SHT_PROGBITS (0x1)
# CHECK-NEXT: Flags [ (0x6)
@ -92,7 +76,7 @@ _start:
# CHECK: )
# CHECK-NEXT: }
# CHECK-NEXT: Section {
# CHECK-NEXT: Index: 3
# CHECK-NEXT: Index: 2
# CHECK-NEXT: Name: .data
# CHECK-NEXT: Type: SHT_PROGBITS (0x1)
# CHECK-NEXT: Flags [ (0x3)
@ -110,7 +94,7 @@ _start:
# CHECK: )
# CHECK-NEXT: }
# CHECK-NEXT: Section {
# CHECK-NEXT: Index: 4
# CHECK-NEXT: Index: 3
# CHECK-NEXT: Name: .opd
# CHECK-NEXT: Type: SHT_PROGBITS (0x1)
# CHECK-NEXT: Flags [ (0x3)
@ -130,6 +114,22 @@ _start:
# CHECK-NEXT: )
# CHECK-NEXT: }
# CHECK-NEXT: Section {
# CHECK-NEXT: Index: 4
# CHECK-NEXT: Name: .bss
# CHECK-NEXT: Type: SHT_NOBITS (0x8)
# CHECK-NEXT: Flags [ (0x3)
# CHECK-NEXT: SHF_ALLOC (0x2)
# CHECK-NEXT: SHF_WRITE (0x1)
# CHECK-NEXT: ]
# CHECK-NEXT: Address: 0x12018
# CHECK-NEXT: Offset: 0x2018
# CHECK-NEXT: Size: 0
# CHECK-NEXT: Link: 0
# CHECK-NEXT: Info: 0
# CHECK-NEXT: AddressAlignment: 4
# CHECK-NEXT: EntrySize: 0
# CHECK-NEXT: }
# CHECK-NEXT: Section {
# CHECK-NEXT: Index: 5
# CHECK-NEXT: Name: .symtab
# CHECK-NEXT: Type: SHT_SYMTAB

11
lld/test/elf2/bss.s
View File

@ -19,17 +19,6 @@
// CHECK-NEXT: AddressAlignment: 4
// CHECK-NEXT: EntrySize: 0
// CHECK-NEXT: }
// CHECK-NEXT: Section {
// CHECK-NEXT: Index:
// CHECK-NEXT: Name:
// CHECK-NEXT: Type:
// CHECK-NEXT: Flags [
// CHECK-NEXT: SHF_ALLOC
// CHECK-NEXT: SHF_EXECINSTR
// CHECK-NEXT: ]
// CHECK-NEXT: Address:
// CHECK-NEXT: Offset: 0x1000
.global _start
_start:

4
lld/test/elf2/discard-none.s
View File

@ -40,7 +40,7 @@
// CHECK-NEXT: }
// CHECK-NEXT: Symbol {
// CHECK-NEXT: Name: .Lmyothervar
// CHECK-NEXT: Value: 0x1000
// CHECK-NEXT: Value: 0x102C
// CHECK-NEXT: Size: 0
// CHECK-NEXT: Binding: Local
// CHECK-NEXT: Type: None
@ -49,7 +49,7 @@
// CHECK-NEXT: }
// CHECK-NEXT: Symbol {
// CHECK-NEXT: Name: .Lmyvar
// CHECK-NEXT: Value: 0x1000
// CHECK-NEXT: Value: 0x102C
// CHECK-NEXT: Size: 0
// CHECK-NEXT: Binding: Local
// CHECK-NEXT: Type: None

2
lld/test/elf2/dynamic-reloc-index.s
View File

@ -8,7 +8,7 @@
// CHECK: Relocations [
// CHECK-NEXT: Section ({{.*}}) .rela.dyn {
// CHECK-NEXT: 0x11000 R_X86_64_64 bar 0x0
// CHECK-NEXT: 0x12000 R_X86_64_64 bar 0x0
// CHECK-NEXT: }
// CHECK-NEXT: ]

20
lld/test/elf2/dynamic-reloc.s
View File

@ -6,15 +6,7 @@
// RUN: llvm-readobj -dynamic-table -r --expand-relocs -s %t | FileCheck %s
// REQUIRES: x86
// CHECK: Name: .text
// CHECK-NEXT: Type: SHT_PROGBITS
// CHECK-NEXT: Flags [
// CHECK-NEXT: SHF_ALLOC
// CHECK-NEXT: SHF_EXECINSTR
// CHECK-NEXT: ]
// CHECK-NEXT: Address: [[ADDR:.*]]
// CHECK: Index: 4
// CHECK: Index: 1
// CHECK-NEXT: Name: .dynsym
// CHECK: Name: .rela.dyn
@ -25,11 +17,19 @@
// CHECK-NEXT: Address: [[RELAADDR:.*]]
// CHECK-NEXT: Offset:
// CHECK-NEXT: Size: [[RELASIZE:.*]]
// CHECK-NEXT: Link: 4
// CHECK-NEXT: Link: 1
// CHECK-NEXT: Info: 0
// CHECK-NEXT: AddressAlignment: 8
// CHECK-NEXT: EntrySize: 24
// CHECK: Name: .text
// CHECK-NEXT: Type: SHT_PROGBITS
// CHECK-NEXT: Flags [
// CHECK-NEXT: SHF_ALLOC
// CHECK-NEXT: SHF_EXECINSTR
// CHECK-NEXT: ]
// CHECK-NEXT: Address: [[ADDR:.*]]
// CHECK: Relocations [
// CHECK-NEXT: Section ({{.*}}) .rela.dyn {
// CHECK-NEXT: Relocation {

18
lld/test/elf2/got.s
View File

@ -12,7 +12,7 @@
// CHECK-NEXT: SHF_ALLOC
// CHECK-NEXT: SHF_WRITE
// CHECK-NEXT: ]
// CHECK-NEXT: Address: 0x15000
// CHECK-NEXT: Address: 0x13080
// CHECK-NEXT: Offset:
// CHECK-NEXT: Size: 16
// CHECK-NEXT: Link: 0
@ -21,22 +21,22 @@
// CHECK: Relocations [
// CHECK-NEXT: Section ({{.*}}) .rela.dyn {
// CHECK-NEXT: 0x15000 R_X86_64_GLOB_DAT bar 0x0
// CHECK-NEXT: 0x15008 R_X86_64_GLOB_DAT zed 0x0
// CHECK-NEXT: 0x13080 R_X86_64_GLOB_DAT bar 0x0
// CHECK-NEXT: 0x13088 R_X86_64_GLOB_DAT zed 0x0
// CHECK-NEXT: }
// CHECK-NEXT: ]
// Unfortunately FileCheck can't do math, so we have to check for explicit
// values:
// 0x15000 - (0x11000 + 2) - 4 = 16378
// 0x15000 - (0x11006 + 2) - 4 = 16372
// 0x15008 - (0x1100c + 2) - 4 = 16374
// 0x13080 - (0x12000 + 2) - 4 = 4218
// 0x13080 - (0x12006 + 2) - 4 = 4212
// 0x13088 - (0x1200c + 2) - 4 = 4214
// DISASM: _start:
// DISASM-NEXT: 11000: ff 25 fa 3f 00 00 jmpq *16378(%rip)
// DISASM-NEXT: 11006: ff 25 f4 3f 00 00 jmpq *16372(%rip)
// DISASM-NEXT: 1100c: ff 25 f6 3f 00 00 jmpq *16374(%rip)
// DISASM-NEXT: 12000: {{.*}} jmpq *4218(%rip)
// DISASM-NEXT: 12006: {{.*}} jmpq *4212(%rip)
// DISASM-NEXT: 1200c: {{.*}} jmpq *4214(%rip)
.global _start
_start:

10
lld/test/elf2/local-dynamic.s
View File

@ -16,7 +16,7 @@
// CHECK-NEXT: }
// CHECK-NEXT: Symbol {
// CHECK-NEXT: Name: blah
// CHECK-NEXT: Value: 0x1000
// CHECK-NEXT: Value: 0x1050
// CHECK-NEXT: Size: 0
// CHECK-NEXT: Binding: Local
// CHECK-NEXT: Type: None
@ -25,7 +25,7 @@
// CHECK-NEXT: }
// CHECK-NEXT: Symbol {
// CHECK-NEXT: Name: foo
// CHECK-NEXT: Value: 0x1000
// CHECK-NEXT: Value: 0x1050
// CHECK-NEXT: Size: 0
// CHECK-NEXT: Binding: Local
// CHECK-NEXT: Type: None
@ -34,7 +34,7 @@
// CHECK-NEXT: }
// CHECK-NEXT: Symbol {
// CHECK-NEXT: Name: goo
// CHECK-NEXT: Value: 0x1000
// CHECK-NEXT: Value: 0x1050
// CHECK-NEXT: Size: 0
// CHECK-NEXT: Binding: Local
// CHECK-NEXT: Type: None
@ -43,7 +43,7 @@
// CHECK-NEXT: }
// CHECK-NEXT: Symbol {
// CHECK-NEXT: Name: _start
// CHECK-NEXT: Value: 0x1000
// CHECK-NEXT: Value: 0x1050
// CHECK-NEXT: Size: 0
// CHECK-NEXT: Binding: Global
// CHECK-NEXT: Type: None
@ -64,7 +64,7 @@
// CHECK-NEXT: }
// CHECK-NEXT: Symbol {
// CHECK-NEXT: Name: _start@
// CHECK-NEXT: Value: 0x1000
// CHECK-NEXT: Value: 0x1050
// CHECK-NEXT: Size: 0
// CHECK-NEXT: Binding: Global
// CHECK-NEXT: Type: None

34
lld/test/elf2/plt-i686.s
View File

@ -12,7 +12,7 @@
// CHECK-NEXT: SHF_ALLOC
// CHECK-NEXT: SHF_EXECINSTR
// CHECK-NEXT: ]
// CHECK-NEXT: Address: 0x16000
// CHECK-NEXT: Address: 0x12010
// CHECK-NEXT: Offset:
// CHECK-NEXT: Size: 16
// CHECK-NEXT: Link: 0
@ -21,34 +21,34 @@
// CHECK: Relocations [
// CHECK-NEXT: Section ({{.*}}) .rel.dyn {
// CHECK-NEXT: 0x15000 R_386_GLOB_DAT bar 0x0
// CHECK-NEXT: 0x15004 R_386_GLOB_DAT zed 0x0
// CHECK-NEXT: 0x13040 R_386_GLOB_DAT bar 0x0
// CHECK-NEXT: 0x13044 R_386_GLOB_DAT zed 0x0
// CHECK-NEXT: }
// CHECK-NEXT: ]
// Unfortunately FileCheck can't do math, so we have to check for explicit
// values:
// 0x16000 - (0x11000 + 1) - 4 = 20475
// 0x16000 - (0x11005 + 1) - 4 = 20470
// 0x16008 - (0x1100a + 1) - 4 = 20473
// 0x12010 - (0x12000 + 1) - 4 = 11
// 0x12010 - (0x12005 + 1) - 4 = 2
// 0x12018 - (0x1200a + 1) - 4 = 9
// DISASM: _start:
// DISASM-NEXT: 11000: e9 fb 4f 00 00 jmp 20475
// DISASM-NEXT: 11005: e9 f6 4f 00 00 jmp 20470
// DISASM-NEXT: 1100a: e9 f9 4f 00 00 jmp 20473
// DISASM-NEXT: 12000: e9 0b 00 00 00 jmp 11
// DISASM-NEXT: 12005: e9 06 00 00 00 jmp 6
// DISASM-NEXT: 1200a: e9 09 00 00 00 jmp 9
// 0x15000 = 86016
// 0x15004 = 86020
// 0x13040 = 77888
// 0x13044 = 77892
// DISASM: Disassembly of section .plt:
// DISASM-NEXT: .plt:
// DISASM-NEXT: 16000: ff 25 00 50 01 00 jmpl *86016
// DISASM-NEXT: 16006: 90 nop
// DISASM-NEXT: 16007: 90 nop
// DISASM-NEXT: 16008: ff 25 04 50 01 00 jmpl *86020
// DISASM-NEXT: 1600e: 90 nop
// DISASM-NEXT: 1600f: 90 nop
// DISASM-NEXT: 12010: ff 25 {{.*}} jmpl *77888
// DISASM-NEXT: 12016: 90 nop
// DISASM-NEXT: 12017: 90 nop
// DISASM-NEXT: 12018: ff 25 {{.*}} jmpl *77892
// DISASM-NEXT: 1201e: 90 nop
// DISASM-NEXT: 1201f: 90 nop
.global _start
_start:

36
lld/test/elf2/plt.s
View File

@ -12,7 +12,7 @@
// CHECK-NEXT: SHF_ALLOC
// CHECK-NEXT: SHF_EXECINSTR
// CHECK-NEXT: ]
// CHECK-NEXT: Address: 0x16000
// CHECK-NEXT: Address: 0x12020
// CHECK-NEXT: Offset:
// CHECK-NEXT: Size: 24
// CHECK-NEXT: Link: 0
@ -21,35 +21,35 @@
// CHECK: Relocations [
// CHECK-NEXT: Section ({{.*}}) .rela.dyn {
// CHECK-NEXT: 0x15000 R_X86_64_GLOB_DAT bar 0x0
// CHECK-NEXT: 0x15008 R_X86_64_GLOB_DAT zed 0x0
// CHECK-NEXT: 0x15010 R_X86_64_GLOB_DAT _start 0x0
// CHECK-NEXT: 0x13080 R_X86_64_GLOB_DAT bar 0x0
// CHECK-NEXT: 0x13088 R_X86_64_GLOB_DAT zed 0x0
// CHECK-NEXT: 0x13090 R_X86_64_GLOB_DAT _start 0x0
// CHECK-NEXT: }
// CHECK-NEXT: ]
// Unfortunately FileCheck can't do math, so we have to check for explicit
// values:
// 0x16000 - (0x11000 + 1) - 4 = 20475
// 0x16000 - (0x11005 + 1) - 4 = 20470
// 0x16008 - (0x1100a + 1) - 4 = 20473
// 0x12020 - (0x12000 + 1) - 4 = 27
// 0x12020 - (0x12005 + 1) - 4 = 22
// 0x12028 - (0x1200a + 1) - 4 = 25
// DISASM: _start:
// DISASM-NEXT: 11000: e9 fb 4f 00 00 jmp 20475
// DISASM-NEXT: 11005: e9 f6 4f 00 00 jmp 20470
// DISASM-NEXT: 1100a: e9 f9 4f 00 00 jmp 20473
// DISASM-NEXT: 12000: e9 {{.*}} jmp 27
// DISASM-NEXT: 12005: e9 {{.*}} jmp 22
// DISASM-NEXT: 1200a: e9 {{.*}} jmp 25
// 0x15000 - 0x16006 = -4102
// 0x15008 - 0x1600e = -4102
// 0x13080 - 0x12026 = 4186
// 0x13088 - 0x1202e = 4186
// DISASM: Disassembly of section .plt:
// DISASM-NEXT: .plt:
// DISASM-NEXT: 16000: ff 25 fa ef ff ff jmpq *-4102(%rip)
// DISASM-NEXT: 16006: 90 nop
// DISASM-NEXT: 16007: 90 nop
// DISASM-NEXT: 16008: ff 25 fa ef ff ff jmpq *-4102(%rip)
// DISASM-NEXT: 1600e: 90 nop
// DISASM-NEXT: 1600f: 90 nop
// DISASM-NEXT: 12020: ff 25 {{.*}} jmpq *4186(%rip)
// DISASM-NEXT: 12026: 90 nop
// DISASM-NEXT: 12027: 90 nop
// DISASM-NEXT: 12028: ff 25 {{.*}} jmpq *4186(%rip)
// DISASM-NEXT: 1202e: 90 nop
// DISASM-NEXT: 1202f: 90 nop
.global _start
_start:

4
lld/test/elf2/relocation-common.s
View File

@ -10,5 +10,5 @@ _start:
.global sym1
.comm sym1,4,4
// CHECK: 12000: {{.*}} movl $1, -4106(%rip)
// CHECK: 0000000000011000 g .bss 00000004 sym1
// CHECK: 11000: {{.*}} movl $1, 4086(%rip)
// CHECK: 0000000000012000 g .bss 00000004 sym1

16
lld/test/elf2/relocation-i686.s
View File

@ -27,14 +27,14 @@ R_386_PC32_2:
// CHECK: Disassembly of section .R_386_32:
// CHECK-NEXT: R_386_32:
// CHECK-NEXT: 11000: {{.*}} movl $69633, %edx
// CHECK-NEXT: 12000: {{.*}} movl $73729, %edx
// CHECK: Disassembly of section .R_386_PC32:
// CHECK-NEXT: R_386_PC32:
// CHECK-NEXT: 11005: e8 04 00 00 00 calll 4
// CHECK-NEXT: 12005: e8 04 00 00 00 calll 4
// CHECK: R_386_PC32_2:
// CHECK-NEXT: 1100e: 90 nop
// CHECK-NEXT: 1200e: 90 nop
// Create a .got
movl bar@GOT, %eax
@ -46,23 +46,23 @@ movl bar@GOT, %eax
// ADDR-NEXT: SHF_ALLOC
// ADDR-NEXT: SHF_WRITE
// ADDR-NEXT: ]
// ADDR-NEXT: Address: 0x15000
// ADDR-NEXT: Address: 0x13040
.section .R_386_GOTPC,"ax",@progbits
R_386_GOTPC:
movl $_GLOBAL_OFFSET_TABLE_, %eax
// 0x15000 - 0x11014 = 16364
// 0x13040 - 0x12014 = 4140
// CHECK: Disassembly of section .R_386_GOTPC:
// CHECK-NEXT: R_386_GOTPC:
// CHECK-NEXT: 11014: {{.*}} movl $16364, %eax
// CHECK-NEXT: 12014: {{.*}} movl $4140, %eax
.section .dynamic_reloc, "ax",@progbits
call bar+4
// CHECK: Disassembly of section .dynamic_reloc:
// CHECK-NEXT: .dynamic_reloc:
// CHECK-NEXT: 11019: e8 00 00 00 00 calll 0
// CHECK-NEXT: 12019: e8 00 00 00 00 calll 0
.section .R_386_GOT32,"ax",@progbits
.global R_386_GOT32
@ -71,4 +71,4 @@ R_386_GOT32:
// This is the second symbol in the got, so the offset is 4.
// CHECK: Disassembly of section .R_386_GOT32:
// CHECK-NEXT: R_386_GOT32:
// CHECK-NEXT: 1101e: {{.*}} movl 4, %eax
// CHECK-NEXT: 1201e: {{.*}} movl 4, %eax

6
lld/test/elf2/relocation-local.s
View File

@ -20,7 +20,7 @@ R_X86_64_32:
// constants in hex.
// CHECK: Disassembly of section .text2:
// CHECK-NEXT: R_X86_64_32:
// CHECK-NEXT: 1100c: {{.*}} movl $69644, %edx
// CHECK-NEXT: 12009: {{.*}} movl $73737, %edx
.section .R_X86_64_32S,"ax",@progbits
R_X86_64_32S:
@ -28,11 +28,11 @@ R_X86_64_32S:
// CHECK: Disassembly of section .R_X86_64_32S:
// CHECK-NEXT: R_X86_64_32S:
// CHECK-NEXT: {{.*}}: {{.*}} movq -978935, %rdx
// CHECK-NEXT: {{.*}}: {{.*}} movq -974839, %rdx
.section .R_X86_64_64,"a",@progbits
R_X86_64_64:
.quad R_X86_64_64
// CHECK: Contents of section .R_X86_64_64:
// CHECK-NEXT: 12000 00200100 00000000
// CHECK-NEXT: 11000 00100100 00000000

14
lld/test/elf2/relocation.s
View File

@ -32,11 +32,11 @@ lulz:
// CHECK: Disassembly of section .text:
// CHECK-NEXT: _start:
// CHECK-NEXT: 11000: e8 04 00 00 00 callq 4
// CHECK-NEXT: 11005:
// CHECK-NEXT: 12000: e8 04 00 00 00 callq 4
// CHECK-NEXT: 12005:
// CHECK: lulz:
// CHECK-NEXT: 11009: 90 nop
// CHECK-NEXT: 12009: 90 nop
.section .text2,"ax",@progbits
@ -48,7 +48,7 @@ R_X86_64_32:
// constants in hex.
// CHECK: Disassembly of section .text2:
// CHECK-NEXT: R_X86_64_32:
// CHECK-NEXT: 1100c: {{.*}} movl $69644, %edx
// CHECK-NEXT: 1200a: {{.*}} movl $73738, %edx
.section .R_X86_64_32S,"ax",@progbits
.global R_X86_64_32S
@ -57,7 +57,7 @@ R_X86_64_32S:
// CHECK: Disassembly of section .R_X86_64_32S:
// CHECK-NEXT: R_X86_64_32S:
// CHECK-NEXT: {{.*}}: {{.*}} movq -978935, %rdx
// CHECK-NEXT: {{.*}}: {{.*}} movq -974839, %rdx
.section .R_X86_64_64,"a",@progbits
.global R_X86_64_64
@ -65,7 +65,7 @@ R_X86_64_64:
.quad R_X86_64_64
// CHECK: Contents of section .R_X86_64_64:
// CHECK-NEXT: 12000 00200100 00000000
// CHECK-NEXT: 11000 00100100 00000000
.section .R_X86_64_GOTPCREL,"a",@progbits
.global R_X86_64_GOTPCREL
@ -75,4 +75,4 @@ R_X86_64_GOTPCREL:
// 0x13000 - 0x12008 = 4088
// 4088 = 0xf80f0000 in little endian
// CHECK: Contents of section .R_X86_64_GOTPCREL
// CHECK-NEXT: 12008 f80f0000
// CHECK-NEXT: 11008 f81f0000

28
lld/test/elf2/section-layout.s Normal file
View File

@ -0,0 +1,28 @@
# RUN: llvm-mc -filetype=obj -triple=x86_64-unknown-linux %s -o %t
# RUN: lld -flavor gnu2 %t -o %tout
# RUN: llvm-readobj -sections %tout | FileCheck %s
# REQUIRES: x86
# Check that sections are laid out in the correct order.
.global _start
.text
_start:
.section h,""
.section g,"",@nobits
.section f,"aw",@nobits
.section e,"aw"
.section d,"ax",@nobits
.section c,"ax"
.section b,"a",@nobits
.section a,"a"
// CHECK: Name: a
// CHECK: Name: b
// CHECK: Name: c
// CHECK: Name: d
// CHECK: Name: e
// CHECK: Name: f
// CHECK: Name: h
// CHECK: Name: g

48
lld/test/elf2/shared.s
View File

@ -14,7 +14,7 @@
// SO-NEXT: Flags [
// SO-NEXT: ]
// SO-NEXT: Address:
// SO-NEXT: Offset: 0x300C
// SO-NEXT: Offset: 0x2028
// SO-NEXT: Size:
// SO-NEXT: Link:
// SO-NEXT: Info:
@ -39,14 +39,14 @@
// CHECK-NEXT: }
// test that .hash is linked to .dynsym
// CHECK: Index: 5
// CHECK: Index: 2
// CHECK-NEXT: Name: .dynsym
// CHECK-NEXT: Type: SHT_DYNSYM
// CHECK-NEXT: Flags [
// CHECK-NEXT: SHF_ALLOC
// CHECK-NEXT: ]
// CHECK-NEXT: Address: [[DYNSYMADDR:.*]]
// CHECK-NEXT: Offset: 0x201C
// CHECK-NEXT: Offset: 0x101C
// CHECK-NEXT: Size:
// CHECK-NEXT: Link: [[DYNSTR:.*]]
// CHECK-NEXT: Info: 1
@ -60,7 +60,7 @@
// CHECK-NEXT: )
// CHECK-NEXT: }
// CHECK-NEXT: Section {
// CHECK-NEXT: Index: 6
// CHECK-NEXT: Index: 3
// CHECK-NEXT: Name: .hash
// CHECK-NEXT: Type: SHT_HASH
// CHECK-NEXT: Flags [
@ -69,29 +69,11 @@
// CHECK-NEXT: Address: [[HASHADDR:.*]]
// CHECK-NEXT: Offset:
// CHECK-NEXT: Size:
// CHECK-NEXT: Link: 5
// CHECK-NEXT: Link: 2
// CHECK-NEXT: Info: 0
// CHECK-NEXT: AddressAlignment: 4
// CHECK-NEXT: EntrySize: 4
// CHECK: Name: .dynamic
// CHECK-NEXT: Type: SHT_DYNAMIC
// CHECK-NEXT: Flags [
// CHECK-NEXT: SHF_ALLOC
// CHECK-NEXT: SHF_WRITE
// CHECK-NEXT: ]
// CHECK-NEXT: Address: [[ADDR:.*]]
// CHECK-NEXT: Offset: [[OFFSET:.*]]
// CHECK-NEXT: Size: [[SIZE:.*]]
// CHECK-NEXT: Link: [[DYNSTR]]
// CHECK-NEXT: Info: 0
// CHECK-NEXT: AddressAlignment: [[ALIGN:.*]]
// CHECK-NEXT: EntrySize: 8
// CHECK-NEXT: SectionData (
// CHECK: )
// CHECK-NEXT: }
// CHECK: Index: [[DYNSTR]]
// CHECK-NEXT: Name: .dynstr
// CHECK-NEXT: Type: SHT_STRTAB
@ -118,6 +100,22 @@
// CHECK-NEXT: Offset:
// CHECK-NEXT: Size: [[RELSIZE:.*]]
// CHECK: Name: .dynamic
// CHECK-NEXT: Type: SHT_DYNAMIC
// CHECK-NEXT: Flags [
// CHECK-NEXT: SHF_ALLOC
// CHECK-NEXT: SHF_WRITE
// CHECK-NEXT: ]
// CHECK-NEXT: Address: [[ADDR:.*]]
// CHECK-NEXT: Offset: [[OFFSET:.*]]
// CHECK-NEXT: Size: [[SIZE:.*]]
// CHECK-NEXT: Link: [[DYNSTR]]
// CHECK-NEXT: Info: 0
// CHECK-NEXT: AddressAlignment: [[ALIGN:.*]]
// CHECK-NEXT: EntrySize: 8
// CHECK-NEXT: SectionData (
// CHECK: )
// CHECK-NEXT: }
// CHECK: Symbols [
// CHECK-NEXT: Symbol {
@ -131,7 +129,7 @@
// CHECK-NEXT: }
// CHECK-NEXT: Symbol {
// CHECK-NEXT: Name: _start
// CHECK-NEXT: Value: 0x11000
// CHECK-NEXT: Value: 0x12000
// CHECK-NEXT: Size: 0
// CHECK-NEXT: Binding: Global
// CHECK-NEXT: Type: None
@ -170,7 +168,7 @@
// CHECK-NEXT: }
// CHECK-NEXT: Symbol {
// CHECK-NEXT: Name: _start@
// CHECK-NEXT: Value: 0x11000
// CHECK-NEXT: Value: 0x12000
// CHECK-NEXT: Size: 0
// CHECK-NEXT: Binding: Global
// CHECK-NEXT: Type: Non

20
lld/test/elf2/symbols.s
View File

@ -45,15 +45,12 @@ hidden:
.internal internal
internal:
// CHECK: Name: .bss
// CHECK: Name: foobar
// CHECK-NEXT: Type: SHT_NOBITS
// CHECK-NEXT: Flags [
// CHECK-NEXT: SHF_ALLOC
// CHECK-NEXT: SHF_WRITE
// CHECK-NEXT: ]
// CHECK-NEXT: Address: 0x11000
// CHECK-NEXT: Offset: 0x1000
// CHECK-NEXT: Size: 4
// CHECK: Name: .text
// CHECK-NEXT: Type: SHT_PROGBITS
@ -63,12 +60,15 @@ internal:
// CHECK-NEXT: ]
// CHECK-NEXT: Address: 0x12000
// CHECK: Name: foobar
// CHECK: Name: .bss
// CHECK-NEXT: Type: SHT_NOBITS
// CHECK-NEXT: Flags [
// CHECK-NEXT: SHF_ALLOC
// CHECK-NEXT: SHF_WRITE
// CHECK-NEXT: ]
// CHECK-NEXT: Address: 0x13000
// CHECK-NEXT: Offset: 0x2000
// CHECK-NEXT: Size: 4
// CHECK: Symbols [
// CHECK-NEXT: Symbol {
@ -109,7 +109,7 @@ internal:
// CHECK-NEXT: }
// CHECK-NEXT: Symbol {
// CHECK-NEXT: Name: common
// CHECK-NEXT: Value: 0x11000
// CHECK-NEXT: Value: 0x13000
// CHECK-NEXT: Size: 4
// CHECK-NEXT: Binding: Global
// CHECK-NEXT: Type: Object
@ -127,7 +127,7 @@ internal:
// CHECK-NEXT: }
// CHECK-NEXT: Symbol {
// CHECK-NEXT: Name: protected
// CHECK-NEXT: Value: 0x13008
// CHECK-NEXT: Value: 0x11008
// CHECK-NEXT: Size: 0
// CHECK-NEXT: Binding: Global
// CHECK-NEXT: Type: None
@ -136,7 +136,7 @@ internal:
// CHECK-NEXT: }
// CHECK-NEXT: Symbol {
// CHECK-NEXT: Name: zed
// CHECK-NEXT: Value: 0x13000
// CHECK-NEXT: Value: 0x11000
// CHECK-NEXT: Size: 0
// CHECK-NEXT: Binding: Global (0x1)
// CHECK-NEXT: Type: None
@ -145,7 +145,7 @@ internal:
// CHECK-NEXT: }
// CHECK-NEXT: Symbol {
// CHECK-NEXT: Name: zed2
// CHECK-NEXT: Value: 0x13004
// CHECK-NEXT: Value: 0x11004
// CHECK-NEXT: Size: 0
// CHECK-NEXT: Binding: Global
// CHECK-NEXT: Type: None
@ -154,7 +154,7 @@ internal:
// CHECK-NEXT: }
// CHECK-NEXT: Symbol {
// CHECK-NEXT: Name: zed3
// CHECK-NEXT: Value: 0x13008
// CHECK-NEXT: Value: 0x11008
// CHECK-NEXT: Size: 4
// CHECK-NEXT: Binding: Global
// CHECK-NEXT: Type: None