[lld] ba1cdba - [llvm-nm] Display STT_GNU_IFUNC as 'i'
Fangrui Song via llvm-commits
llvm-commits at lists.llvm.org
Wed Dec 25 09:51:42 PST 2019
Author: Fangrui Song
Date: 2019-12-25T09:47:53-08:00
New Revision: ba1cdba4c48cfee5e400e103af8353f4901ecb9a
URL: https://github.com/llvm/llvm-project/commit/ba1cdba4c48cfee5e400e103af8353f4901ecb9a
DIFF: https://github.com/llvm/llvm-project/commit/ba1cdba4c48cfee5e400e103af8353f4901ecb9a.diff
LOG: [llvm-nm] Display STT_GNU_IFUNC as 'i'
Reviewed By: grimar
Differential Revision: https://reviews.llvm.org/D71803
Added:
llvm/test/tools/llvm-nm/ifunc.test
Modified:
lld/test/ELF/ppc64-ifunc.s
llvm/test/LTO/Resolution/X86/ifunc.ll
llvm/tools/llvm-nm/llvm-nm.cpp
Removed:
################################################################################
diff --git a/lld/test/ELF/ppc64-ifunc.s b/lld/test/ELF/ppc64-ifunc.s
index 4bc1ce7e00a8..9bb204fd01fd 100644
--- a/lld/test/ELF/ppc64-ifunc.s
+++ b/lld/test/ELF/ppc64-ifunc.s
@@ -15,8 +15,8 @@
# RUN: llvm-readobj -r %t | FileCheck --check-prefix=REL %s
# NM-DAG: 0000000010028248 d .TOC.
-# NM-DAG: 00000000100101f8 T ifunc
-# NM-DAG: 00000000100101fc T ifunc2
+# NM-DAG: 00000000100101f8 i ifunc
+# NM-DAG: 00000000100101fc i ifunc2
# SECTIONS: .plt NOBITS 0000000010030250 000250 000010 00 WA 0 0 8
diff --git a/llvm/test/LTO/Resolution/X86/ifunc.ll b/llvm/test/LTO/Resolution/X86/ifunc.ll
index 5a437fddbcb4..7192ea2d5f77 100644
--- a/llvm/test/LTO/Resolution/X86/ifunc.ll
+++ b/llvm/test/LTO/Resolution/X86/ifunc.ll
@@ -1,7 +1,7 @@
; RUN: opt -module-summary -o %t.bc %s
; RUN: llvm-lto2 run %t.bc -r %t.bc,foo,pl -o %t2
; RUN: llvm-nm %t2.1 | FileCheck %s
-; CHECK: T foo
+; CHECK: i foo
; CHECK: t foo_ifunc
target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
diff --git a/llvm/test/tools/llvm-nm/ifunc.test b/llvm/test/tools/llvm-nm/ifunc.test
new file mode 100644
index 000000000000..fdc3ced971ad
--- /dev/null
+++ b/llvm/test/tools/llvm-nm/ifunc.test
@@ -0,0 +1,27 @@
+## Test that the symbol type of STT_GNU_IFUNC is 'i'.
+
+# RUN: yaml2obj %s -o %t
+# RUN: llvm-nm --no-sort %t | FileCheck %s
+
+# CHECK: i ifunc_local
+# CHECK-NEXT: i ifunc_global
+
+!ELF
+FileHeader:
+ Class: ELFCLASS64
+ Data: ELFDATA2LSB
+ Type: ET_REL
+ Machine: EM_X86_64
+Sections:
+ - Name: .text
+ Type: SHT_PROGBITS
+ Flags: [ SHF_ALLOC, SHF_EXECINSTR ]
+Symbols:
+ - Name: ifunc_local
+ Type: STT_GNU_IFUNC
+ Binding: STB_LOCAL
+ Section: .text
+ - Name: ifunc_global
+ Type: STT_GNU_IFUNC
+ Binding: STB_GLOBAL
+ Section: .text
diff --git a/llvm/tools/llvm-nm/llvm-nm.cpp b/llvm/tools/llvm-nm/llvm-nm.cpp
index ee55722dc139..107d62b1f2b9 100644
--- a/llvm/tools/llvm-nm/llvm-nm.cpp
+++ b/llvm/tools/llvm-nm/llvm-nm.cpp
@@ -1133,15 +1133,18 @@ static char getNMSectionTagAndName(SymbolicFile &Obj, basic_symbol_iterator I,
Ret = getSymbolNMTypeChar(*MachO, I);
else if (WasmObjectFile *Wasm = dyn_cast<WasmObjectFile>(&Obj))
Ret = getSymbolNMTypeChar(*Wasm, I);
- else
- Ret = getSymbolNMTypeChar(cast<ELFObjectFileBase>(Obj), I);
+ else if (ELFObjectFileBase *ELF = dyn_cast<ELFObjectFileBase>(&Obj)) {
+ if (ELFSymbolRef(*I).getELFType() == ELF::STT_GNU_IFUNC)
+ return 'i';
+ Ret = getSymbolNMTypeChar(*ELF, I);
+ if (ELFSymbolRef(*I).getBinding() == ELF::STB_GNU_UNIQUE)
+ return Ret;
+ } else
+ llvm_unreachable("unknown binary format");
if (!(Symflags & object::SymbolRef::SF_Global))
return Ret;
- if (Obj.isELF() && ELFSymbolRef(*I).getBinding() == ELF::STB_GNU_UNIQUE)
- return Ret;
-
return toupper(Ret);
}
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