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[lld][Hexagon] Add General Dynamic relocations (GD) 

Differential revision: https://reviews.llvm.org/D72522
This commit is contained in:
Sid Manning 2020-01-10 11:58:21 -06:00
parent cbf08d0f57
commit 6b9a5e6f05
2 changed files with 62 additions and 0 deletions
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11
lld/ELF/Arch/Hexagon.cpp
View File

@ -55,6 +55,8 @@ Hexagon::Hexagon() {
defaultMaxPageSize = 0x10000;
noneRel = R_HEX_NONE;
tlsGotRel = R_HEX_TPREL_32;
tlsModuleIndexRel = R_HEX_DTPMOD_32;
tlsOffsetRel = R_HEX_DTPREL_32;
}
uint32_t Hexagon::calcEFlags() const {
@ -102,6 +104,7 @@ RelExpr Hexagon::getRelExpr(RelType type, const Symbol &s,
case R_HEX_32_6_X:
case R_HEX_HI16:
case R_HEX_LO16:
case R_HEX_DTPREL_32:
return R_ABS;
case R_HEX_B9_PCREL:
case R_HEX_B13_PCREL:
@ -121,6 +124,10 @@ RelExpr Hexagon::getRelExpr(RelType type, const Symbol &s,
case R_HEX_IE_HI16:
case R_HEX_IE_LO16:
return R_GOT;
case R_HEX_GD_GOT_11_X:
case R_HEX_GD_GOT_16_X:
case R_HEX_GD_GOT_32_6_X:
return R_TLSGD_GOTPLT;
case R_HEX_GOTREL_11_X:
case R_HEX_GOTREL_16_X:
case R_HEX_GOTREL_32_6_X:
@ -240,6 +247,7 @@ void Hexagon::relocateOne(uint8_t *loc, RelType type, uint64_t val) const {
or32le(loc, applyMask(0x00203fe0, val & 0x3f));
break;
case R_HEX_11_X:
case R_HEX_GD_GOT_11_X:
case R_HEX_IE_GOT_11_X:
case R_HEX_GOT_11_X:
case R_HEX_GOTREL_11_X:
@ -252,6 +260,7 @@ void Hexagon::relocateOne(uint8_t *loc, RelType type, uint64_t val) const {
case R_HEX_16_X: // These relocs only have 6 effective bits.
case R_HEX_IE_16_X:
case R_HEX_IE_GOT_16_X:
case R_HEX_GD_GOT_16_X:
case R_HEX_GOT_16_X:
case R_HEX_GOTREL_16_X:
case R_HEX_TPREL_16_X:
@ -262,9 +271,11 @@ void Hexagon::relocateOne(uint8_t *loc, RelType type, uint64_t val) const {
break;
case R_HEX_32:
case R_HEX_32_PCREL:
case R_HEX_DTPREL_32:
or32le(loc, val);
break;
case R_HEX_32_6_X:
case R_HEX_GD_GOT_32_6_X:
case R_HEX_GOT_32_6_X:
case R_HEX_GOTREL_32_6_X:
case R_HEX_IE_GOT_32_6_X:

51
lld/test/ELF/hexagon-tls-gd.s Normal file
View File

@ -0,0 +1,51 @@
# REQUIRES: hexagon
# RUN: llvm-mc -filetype=obj -triple=hexagon-unknown-elf %s -o %t.o
# RUN: llvm-readobj -r %t.o | FileCheck -check-prefix=RELOC %s
# RUN: ld.lld %t.o -o %t
# RUN: ld.lld -shared %t.o -o %t.so
# RUN: llvm-objdump -d --no-show-raw-insn --print-imm-hex %t | FileCheck %s
# RUN: llvm-objdump -d --no-show-raw-insn --print-imm-hex %t.so | FileCheck %s
# RUN: llvm-readobj -x .got %t | FileCheck -check-prefix=GOT %s
# RUN: llvm-readobj -x .got %t.so | FileCheck -check-prefix=GOT-SHARED %s
# RUN: llvm-readobj -x .tdata %t | FileCheck -check-prefix=TDATA %s
# RUN: llvm-readobj -x .tdata %t.so | FileCheck -check-prefix=TDATA %s
# RUN: llvm-readobj -r %t | FileCheck -check-prefix=RELA %s
# RUN: llvm-readobj -r %t.so | FileCheck -check-prefix=RELA-SHARED %s
.globl _start
.type _start, @function
_start:
# RELOC: 0x0 R_HEX_GD_GOT_32_6_X a 0x0
# RELOC-NEXT: 0x4 R_HEX_GD_GOT_16_X a 0x0
# CHECK: { immext(#0xfffeffc0)
# CHECK-NEXT: r0 = add(r1,##-0x10008) }
r0 = add(r1, ##a@GDGOT)
# RELOC: 0x8 R_HEX_GD_GOT_32_6_X a 0x0
# RELOC-NEXT: 0xC R_HEX_GD_GOT_11_X a 0x0
# CHECK-NEXT: { immext(#0xfffeffc0)
# CHECK-NEXT: r0 = memw(r1+##-0x10008) }
r0 = memw(r1+##a@GDGOT)
# GOT: Hex dump of section '.got':
# GOT-NEXT: 0x{{[0-9a-f]+}} 01000000 00000000
# GOT-SHARED: Hex dump of section '.got':
# GOT-SHARED-NEXT: 0x{{[0-9a-f]+}} 00000000 00000000
# TDATA: Hex dump of section '.tdata':
# TDATA-NEXT: 01000000
# RELA: Relocations [
# RELA-NEXT: ]
# RELA-SHARED: .rela.dyn {
# RELA-SHARED-NEXT: 0x2024C R_HEX_DTPMOD_32 a 0x0
# RELA-SHARED-NEXT: 0x20250 R_HEX_DTPREL_32 a 0x0
# RELA-SHARED-NEXT: }
.section .tdata,"awT",@progbits
.globl a
a:
.word 1