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LLD/ELF/AMDGPU: Process AMDGPU-specific e_flags 

Differential Revision: https://reviews.llvm.org/D39140

llvm-svn: 316483
This commit is contained in:
Konstantin Zhuravlyov 2017-10-24 19:05:32 +00:00
parent 80db37ec25
commit b71d1b8a54
6 changed files with 48 additions and 0 deletions
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19
lld/ELF/Arch/AMDGPU.cpp
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@ -25,6 +25,7 @@ namespace {
class AMDGPU final : public TargetInfo {
public:
AMDGPU();
uint32_t calcEFlags() const override;
void relocateOne(uint8_t *Loc, RelType Type, uint64_t Val) const override;
RelExpr getRelExpr(RelType Type, const SymbolBody &S,
const uint8_t *Loc) const override;
@ -37,6 +38,24 @@ AMDGPU::AMDGPU() {
GotEntrySize = 8;
}
uint32_t AMDGPU::calcEFlags() const {
if (ObjectFiles.empty())
return 0;
uint32_t Ret =
cast<ObjFile<ELF64LE>>(ObjectFiles.front())->getObj().getHeader()->e_flags;
// Verify that all input files have the same e_flags.
for (InputFile *F : ArrayRef<InputFile*>(ObjectFiles).slice(1)) {
if (Ret != cast<ObjFile<ELF64LE>>(F)->getObj().getHeader()->e_flags) {
error("incompatible e_flags: " + toString(F));
return 0;
}
}
return Ret;
}
void AMDGPU::relocateOne(uint8_t *Loc, RelType Type, uint64_t Val) const {
switch (Type) {
case R_AMDGPU_ABS32:

6
lld/test/ELF/Inputs/amdgpu-kernel-0.s Normal file
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@ -0,0 +1,6 @@
.text
.globl kernel_0
.align 64
.amdgpu_hsa_kernel kernel_0
kernel_0:
s_endpgm

6
lld/test/ELF/Inputs/amdgpu-kernel-1.s Normal file
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@ -0,0 +1,6 @@
.text
.globl kernel_1
.align 64
.amdgpu_hsa_kernel kernel_1
kernel_1:
s_endpgm

BIN
lld/test/ELF/Inputs/amdgpu-kernel-2.o Normal file
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7
lld/test/ELF/amdgpu-elf-flags-err.s Normal file
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@ -0,0 +1,7 @@
# RUN: llvm-mc -triple amdgcn-amd-amdhsa -mcpu=gfx803 -filetype=obj %S/Inputs/amdgpu-kernel-0.s -o %t-0.o
# RUN: llvm-mc -triple amdgcn-amd-amdhsa -mcpu=gfx803 -filetype=obj %S/Inputs/amdgpu-kernel-1.s -o %t-1.o
# RUN: not ld.lld -shared %t-0.o %t-1.o %S/Inputs/amdgpu-kernel-2.o -o %t.so 2>&1 | FileCheck %s
# REQUIRES: amdgpu
# CHECK: error: incompatible e_flags: {{.*}}amdgpu-kernel-2.o

10
lld/test/ELF/amdgpu-elf-flags.s Normal file
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@ -0,0 +1,10 @@
# RUN: llvm-mc -triple amdgcn-amd-amdhsa -mcpu=gfx803 -filetype=obj %S/Inputs/amdgpu-kernel-0.s -o %t-0.o
# RUN: llvm-mc -triple amdgcn-amd-amdhsa -mcpu=gfx803 -filetype=obj %S/Inputs/amdgpu-kernel-1.s -o %t-1.o
# RUN: ld.lld -shared %t-0.o %t-1.o -o %t.so
# RUN: llvm-readobj -file-headers %t.so | FileCheck %s
# REQUIRES: amdgpu
# CHECK: Flags [ (0x2)
# CHECK: EF_AMDGPU_ARCH_GCN (0x2)
# CHECK: ]