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Produce the headers directly in the Finish method. This allows us to use

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the existing streamer methods that are endian safe.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@117323 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Rafael Espindola 2010-10-25 22:26:55 +00:00
parent d155d7e428
commit 3336384239
1 changed files with 15 additions and 21 deletions
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36
lib/Target/ARM/ARMAsmPrinter.cpp
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@ -95,8 +95,6 @@ namespace {
class ObjectAttributeEmitter : public AttributeEmitter {
MCObjectStreamer &Streamer;
size_t SectionStart;
size_t TagStart;
StringRef CurrentVendor;
SmallString<64> Contents;
@ -116,20 +114,7 @@ namespace {
CurrentVendor = Vendor;
SectionStart = Contents.size();
// Length of the data for this vendor.
Contents.append(4, (char)0);
Contents.append(Vendor.begin(), Vendor.end());
Contents += 0;
Contents += ARMBuildAttrs::File;
TagStart = Contents.size();
// Length of the data for this tag.
Contents.append(4, (char)0);
assert(Contents.size() == 0);
}
void EmitAttribute(unsigned Attribute, unsigned Value) {
@ -139,15 +124,24 @@ namespace {
}
void Finish() {
size_t EndPos = Contents.size();
const size_t ContentsSize = Contents.size();
// FIXME: endian.
*((uint32_t*)&Contents[SectionStart]) = EndPos - SectionStart;
// Vendor size + Vendor name + '\0'
const size_t VendorHeaderSize = 4 + CurrentVendor.size() + 1;
// +1 since it includes the tag that came before it.
*((uint32_t*)&Contents[TagStart]) = EndPos - TagStart + 1;
// Tag + Tag Size
const size_t TagHeaderSize = 1 + 4;
Streamer.EmitIntValue(VendorHeaderSize + TagHeaderSize + ContentsSize, 4);
Streamer.EmitBytes(CurrentVendor, 0);
Streamer.EmitIntValue(0, 1); // '\0'
Streamer.EmitIntValue(ARMBuildAttrs::File, 1);
Streamer.EmitIntValue(TagHeaderSize + ContentsSize, 4);
Streamer.EmitBytes(Contents, 0);
Contents.clear();
}
};