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[macho] Allow CPUSubtype to contribute to architecture identification 

Summary:
Sometimes the CPUSubtype determines the Triple::ArchType that must be used.
Add the subtype to the API's to allow targets that need this to correctly
identify the contents of the binary.

Reviewers: pete

Subscribers: hiraditya, llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D70345
This commit is contained in:
Daniel Sanders 2019-11-15 15:08:34 -08:00
parent c941db5b1a
commit 1791901787
2 changed files with 7 additions and 3 deletions
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2
llvm/include/llvm/Object/MachO.h
View File

@ -567,7 +567,7 @@ public:
static StringRef guessLibraryShortName(StringRef Name, bool &isFramework,
StringRef &Suffix);
static Triple::ArchType getArch(uint32_t CPUType);
static Triple::ArchType getArch(uint32_t CPUType, uint32_t CPUSubType);
static Triple getArchTriple(uint32_t CPUType, uint32_t CPUSubType,
const char **McpuDefault = nullptr,
const char **ArchFlag = nullptr);

8
llvm/lib/Object/MachOObjectFile.cpp
View File

@ -128,6 +128,10 @@ static unsigned getCPUType(const MachOObjectFile &O) {
return O.getHeader().cputype;
}
static unsigned getCPUSubType(const MachOObjectFile &O) {
return O.getHeader().cpusubtype;
}
static uint32_t
getPlainRelocationAddress(const MachO::any_relocation_info &RE) {
return RE.r_word0;
@ -2565,7 +2569,7 @@ StringRef MachOObjectFile::getFileFormatName() const {
}
}
Triple::ArchType MachOObjectFile::getArch(uint32_t CPUType) {
Triple::ArchType MachOObjectFile::getArch(uint32_t CPUType, uint32_t CPUSubType) {
switch (CPUType) {
case MachO::CPU_TYPE_I386:
return Triple::x86;
@ -2737,7 +2741,7 @@ ArrayRef<StringRef> MachOObjectFile::getValidArchs() {
}
Triple::ArchType MachOObjectFile::getArch() const {
return getArch(getCPUType(*this));
return getArch(getCPUType(*this), getCPUSubType(*this));
}
Triple MachOObjectFile::getArchTriple(const char **McpuDefault) const {