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[llvm-nm] add a new option -X to specify the type of object file llvm-nm should examine
Summary: Added a new option "-X" to specify, which type of object file should be examine. For example: 1. "llvm-nm -X64 archive.a" only deal with the 64bit object files in the archive.a ,ignore the all 32bit object files in the archive.a 2. "llvm-nm -X32 xcoffobj32.o xcoffobj64.o " only deal with the 32bit object file "xcoffobj32.o" , 64bit object file "xcoffobj64.o" will be ignored Reviewers: James Henderson,Fangrui Song Differential Revision: https://reviews.llvm.org/D118193
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@ -126,6 +126,20 @@ OPTIONS
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Use BSD output format. Alias for ``--format=bsd``.
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.. option:: -X
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Specify the type of XCOFF object file, ELF object file, or IR object file input
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from command line or from archive files that llvm-nm should examine. The
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mode must be one of the following:
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32
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Process only 32-bit object files.
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64
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Process only 64-bit object files.
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32_64
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Process both 32-bit and 64-bit object files.
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any
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Process all the supported object files.
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.. option:: --debug-syms, -a
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Show all symbols, even those usually suppressed.
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14
llvm/test/tools/llvm-nm/Inputs/bitcode-sym32.ll
Normal file
14
llvm/test/tools/llvm-nm/Inputs/bitcode-sym32.ll
Normal file
@ -0,0 +1,14 @@
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target triple = "powerpcle-unknown-linux-gnu"
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@C32 = dso_local global i32 5, align 4
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@undef_var32 = external dso_local global i32, align 4
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define dso_local i32 @foo32(i32 %i) #0 {
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entry:
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%i.addr = alloca i32, align 4
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store i32 %i, i32* %i.addr, align 4
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%0 = load i32, i32* %i.addr, align 4
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%1 = load i32, i32* @undef_var32, align 4
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%add = add nsw i32 %0, %1
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ret i32 %add
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}
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12
llvm/test/tools/llvm-nm/Inputs/bitcode-sym64.ll
Normal file
12
llvm/test/tools/llvm-nm/Inputs/bitcode-sym64.ll
Normal file
@ -0,0 +1,12 @@
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target triple = "powerpc64le-unknown-linux-gnu"
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@C64 = dso_local global i32 5, align 4
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@static_var64 = internal global i32 2, align 4
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define dso_local signext i32 @bar64() #0 {
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entry:
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%0 = load i32, i32* @static_var64, align 4
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%1 = load i32, i32* @C64, align 4
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%add = add nsw i32 %0, %1
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ret i32 %add
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}
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111
llvm/test/tools/llvm-nm/option-X.test
Normal file
111
llvm/test/tools/llvm-nm/option-X.test
Normal file
@ -0,0 +1,111 @@
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## Test the "-X" option.
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## The option specifies the type of object file to examine.
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# RUN: llvm-as -o %t32.bc %p/Inputs/bitcode-sym32.ll
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# RUN: llvm-as -o %t64.bc %p/Inputs/bitcode-sym64.ll
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# RUN: llvm-nm --format=just-symbols -X32 %t32.bc %t64.bc | \
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# RUN: FileCheck %s -DFILE1=%t32.bc --check-prefixes=BITCODE32 --implicit-check-not={{.}}
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# RUN: llvm-nm --format=just-symbols -X64 %t32.bc %t64.bc | \
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# RUN: FileCheck %s -DFILE2=%t64.bc --check-prefixes=BITCODE64 --implicit-check-not={{.}}
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# RUN: llvm-nm --format=just-symbols %t32.bc %t64.bc | \
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# RUN: FileCheck %s -DFILE1=%t32.bc -DFILE2=%t64.bc --check-prefixes=BITCODE32,BITCODE64
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# RUN: llvm-nm --format=just-symbols -X32_64 %t32.bc %t64.bc | \
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# RUN: FileCheck %s -DFILE1=%t32.bc -DFILE2=%t64.bc --check-prefixes=BITCODE32,BITCODE64
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# RUN: llvm-nm --format=just-symbols -Xany %t32.bc %t64.bc | \
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# RUN: FileCheck %s -DFILE1=%t32.bc -DFILE2=%t64.bc --check-prefixes=BITCODE32,BITCODE64
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# BITCODE32: [[FILE1]]:
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# BITCODE32-NEXT: C32
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# BITCODE32-NEXT: foo32
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# BITCODE32-NEXT: undef_var32
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# BITCODE64: [[FILE2]]:
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# BITCODE64-NEXT: C64
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# BITCODE64-NEXT: bar64
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# BITCODE64-NEXT: static_var64
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# RUN: yaml2obj --docnum=1 -DCLASS=ELFCLASS32 %s -o %t_elf32.o
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# RUN: yaml2obj --docnum=1 -DCLASS=ELFCLASS64 %s -o %t_elf64.o
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# RUN: llvm-nm --format=just-symbols -X32 %t_elf32.o %t_elf64.o | \
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# RUN: FileCheck %s -DFILE32=%t_elf32.o --check-prefixes=ELF32 --implicit-check-not={{.}}
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# RUN: llvm-nm --format=just-symbols -X64 %t_elf32.o %t_elf64.o | \
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# RUN: FileCheck %s -DFILE64=%t_elf64.o --check-prefixes=ELF64 --implicit-check-not={{.}}
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# RUN: llvm-nm --format=just-symbols %t_elf32.o %t_elf64.o | \
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# RUN: FileCheck %s -DFILE32=%t_elf32.o -DFILE64=%t_elf64.o --check-prefixes=ELF32,ELF64
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# RUN: llvm-nm --format=just-symbols -X32_64 %t_elf32.o %t_elf64.o | \
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# RUN: FileCheck %s -DFILE32=%t_elf32.o -DFILE64=%t_elf64.o --check-prefixes=ELF32,ELF64
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# RUN: llvm-nm --format=just-symbols -Xany %t_elf32.o %t_elf64.o | \
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# RUN: FileCheck %s -DFILE32=%t_elf32.o -DFILE64=%t_elf64.o --check-prefixes=ELF32,ELF64
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# ELF32: [[FILE32]]:
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# ELF32-NEXT: ELFCLASS32_var
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# ELF64: [[FILE64]]:
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# ELF64-NEXT: ELFCLASS64_var
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--- !ELF
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FileHeader:
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Class: [[CLASS]]
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Data: ELFDATA2LSB
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Type: ET_REL
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Symbols:
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- Name: [[CLASS]]_var
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# RUN: yaml2obj --docnum=2 -DFLAG=0x1DF %s -o %t_xcoff32.o
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# RUN: yaml2obj --docnum=2 -DFLAG=0x1F7 %s -o %t_xcoff64.o
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# RUN: rm -f %t.a
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# RUN: llvm-ar -q -c %t.a %t_xcoff32.o %t_xcoff64.o
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# RUN: llvm-nm --format=just-symbols -X32 %t_xcoff32.o | \
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# RUN: FileCheck --check-prefixes=XCOFF32 %s --implicit-check-not={{.}}
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# RUN: llvm-nm --format=just-symbols -X32 %t.a | \
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# RUN: FileCheck --check-prefixes=ARC32,XCOFF32 %s -DFILE=%basename_t --implicit-check-not={{.}}
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# ARC32: [[FILE]].tmp_xcoff32.o:
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# XCOFF32: var_0x1DF
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# RUN: llvm-nm --format=just-symbols -X64 %t_xcoff64.o | \
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# RUN: FileCheck --check-prefixes=XCOFF64 %s --implicit-check-not={{.}}
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# RUN: llvm-nm --format=just-symbols -X64 %t.a | \
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# RUN: FileCheck --check-prefixes=ARC64,XCOFF64 -DFILE=%basename_t %s --implicit-check-not={{.}}
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# ARC64: [[FILE]].tmp_xcoff64.o:
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# XCOFF64: var_0x1F7
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# RUN: llvm-nm --format=just-symbols %t_xcoff32.o %t_xcoff64.o | \
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# RUN: FileCheck --check-prefixes=BOTH %s -DFILE32=%t_xcoff32.o -DFILE64=%t_xcoff64.o --match-full-lines
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# RUN: llvm-nm --format=just-symbols -X32_64 %t_xcoff32.o %t_xcoff64.o | \
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# RUN: FileCheck --check-prefixes=BOTH %s -DFILE32=%t_xcoff32.o -DFILE64=%t_xcoff64.o --match-full-lines
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# RUN: llvm-nm --format=just-symbols -Xany %t_xcoff32.o %t_xcoff64.o | \
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# RUN: FileCheck --check-prefixes=BOTH %s -DFILE32=%t_xcoff32.o -DFILE64=%t_xcoff64.o --match-full-lines
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# BOTH: [[FILE32]]:
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# BOTH-NEXT: var_0x1DF
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# BOTH-EMPTY:
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# BOTH-NEXT: [[FILE64]]:
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# BOTH-NEXT: var_0x1F7
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# RUN: llvm-nm --format=just-symbols %t.a | \
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# RUN: FileCheck --check-prefixes=ARCHIVE-BOTH -DFILE=%basename_t --match-full-lines %s
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# RUN: llvm-nm --format=just-symbols -X32_64 %t.a | \
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# RUN: FileCheck --check-prefixes=ARCHIVE-BOTH -DFILE=%basename_t --match-full-lines %s
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# RUN: llvm-nm --format=just-symbols -Xany %t.a | \
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# RUN: FileCheck --check-prefixes=ARCHIVE-BOTH -DFILE=%basename_t --match-full-lines %s
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# ARCHIVE-BOTH: [[FILE]].tmp_xcoff32.o:
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# ARCHIVE-BOTH-NEXT: var_0x1DF{{[[:space:]]}}
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# ARCHIVE-BOTH-NEXT: [[FILE]].tmp_xcoff64.o:
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# ARCHIVE-BOTH-NEXT: var_0x1F7
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# RUN: llvm-nm --format=just-symbols -X64 %t_xcoff32.o | count 0
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# RUN: llvm-nm --format=just-symbols -X32 %t_xcoff64.o | count 0
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# RUN: not llvm-nm --format=just-symbols -X33 %t_xcoff32.o 2>&1 | FileCheck %s --check-prefixes=ERR
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# ERR: error: : -X value should be one of: 32, 64, 32_64, (default) any
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# ERR-NEXT: var_0x1DF
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--- !XCOFF
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FileHeader:
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MagicNumber: [[FLAG]]
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Symbols:
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- Name: var_[[FLAG]]
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@ -13,6 +13,7 @@ multiclass Eq<string name, string help> {
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def : Separate<["--"], name>, Alias<!cast<Joined>(NAME #_EQ)>;
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}
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def X : JoinedOrSeparate<["-"], "X">, HelpText<"Specifies the type of ELF, XCOFF, or IR object file to examine. The value must be one of: 32, 64, 32_64, any (default)">;
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def debug_syms : FF<"debug-syms", "Show all symbols, even debugger only">;
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def defined_only : FF<"defined-only", "Show only defined symbols">;
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defm demangle : BB<"demangle", "Demangle C++ symbol names", "Don't demangle symbol names">;
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@ -83,9 +83,11 @@ public:
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};
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enum OutputFormatTy { bsd, sysv, posix, darwin, just_symbols };
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enum class BitModeTy { Bit32, Bit64, Bit32_64, Any };
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} // namespace
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static bool ArchiveMap;
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static BitModeTy BitMode;
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static bool DebugSyms;
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static bool DefinedOnly;
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static bool Demangle;
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@ -1624,9 +1626,23 @@ static void dumpSymbolsFromDLInfoMachO(MachOObjectFile &MachO) {
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}
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}
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static bool shouldDump(SymbolicFile &Obj) {
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// The -X option is currently only implemented for XCOFF, ELF, and IR object
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// files. The option isn't fundamentally impossible with other formats, just
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// isn't implemented.
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if (!isa<XCOFFObjectFile>(Obj) && !isa<ELFObjectFileBase>(Obj) &&
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!isa<IRObjectFile>(Obj))
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return true;
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return isSymbolList64Bit(Obj) ? BitMode != BitModeTy::Bit32
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: BitMode != BitModeTy::Bit64;
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}
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static void dumpSymbolNamesFromObject(SymbolicFile &Obj, bool printName,
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StringRef ArchiveName = {},
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StringRef ArchitectureName = {}) {
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if (!shouldDump(Obj))
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return;
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auto Symbols = Obj.symbols();
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std::vector<VersionEntry> SymbolVersions;
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if (DynamicSyms) {
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@ -1830,7 +1846,7 @@ static void dumpSymbolNamesFromFile(std::string &Filename) {
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}
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if (!checkMachOAndArchFlags(O, Filename))
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return;
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if (!PrintFileName) {
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if (!PrintFileName && shouldDump(*O)) {
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outs() << "\n";
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if (isa<MachOObjectFile>(O)) {
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outs() << Filename << "(" << O->getFileName() << ")";
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@ -2168,6 +2184,18 @@ int main(int argc, char **argv) {
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UndefinedOnly = Args.hasArg(OPT_undefined_only);
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WithoutAliases = Args.hasArg(OPT_without_aliases);
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StringRef Mode = Args.getLastArgValue(OPT_X, "any");
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if (Mode == "32")
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BitMode = BitModeTy::Bit32;
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else if (Mode == "64")
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BitMode = BitModeTy::Bit64;
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else if (Mode == "32_64")
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BitMode = BitModeTy::Bit32_64;
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else if (Mode == "any")
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BitMode = BitModeTy::Any;
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else
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error("-X value should be one of: 32, 64, 32_64, (default) any");
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// Mach-O specific options.
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FormatMachOasHex = Args.hasArg(OPT_x);
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AddDyldInfo = Args.hasArg(OPT_add_dyldinfo);
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