Complete Rewrite of AsmPrinter, TargetObjectFile based on new PIC16Section class
derived from MCSection.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84180 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/PIC16/PIC16Section.cpp b/lib/Target/PIC16/PIC16Section.cpp
new file mode 100644
index 0000000..7029501
--- /dev/null
+++ b/lib/Target/PIC16/PIC16Section.cpp
@@ -0,0 +1,91 @@
+//===-- PIC16Section.cpp - PIC16 Section ----------- --------------------===//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#include "PIC16.h"
+#include "PIC16ABINames.h"
+#include "PIC16Section.h"
+#include "llvm/MC/MCContext.h"
+#include "llvm/Support/raw_ostream.h"
+using namespace llvm;
+
+
+// This is the only way to create a PIC16Section. Sections created here
+// do not need to be explicitly deleted as they are managed by auto_ptrs.
+PIC16Section *PIC16Section::Create(const StringRef &Name,
+ PIC16SectionType Ty,
+ const std::string &Address,
+ int Color, MCContext &Ctx) {
+
+ /// Determine the internal SectionKind info.
+ /// Users of PIC16Section class should not need to know the internal
+ /// SectionKind. They should work only with PIC16SectionType.
+ ///
+ /// PIC16 Terminology for section kinds is as below.
+ /// UDATA - BSS
+ /// IDATA - initialized data (equiv to Metadata)
+ /// ROMDATA - ReadOnly.
+ /// UDATA_OVR - Sections that can be overlaid. Section of such type is
+ /// used to contain function autos an frame. We can think of
+ /// it as equiv to llvm ThreadBSS)
+ /// UDATA_SHR - Shared RAM. Memory area that is mapped to all banks.
+
+ SectionKind K;
+ switch (Ty) {
+ default: llvm_unreachable ("can not create unknown section type");
+ case UDATA_OVR: {
+ K = SectionKind::getThreadBSS();
+ break;
+ }
+ case UDATA_SHR:
+ case UDATA: {
+ K = SectionKind::getBSS();
+ break;
+ }
+ case ROMDATA:
+ case IDATA: {
+ K = SectionKind::getMetadata();
+ break;
+ }
+ case CODE: {
+ K = SectionKind::getText();
+ break;
+ }
+
+ }
+
+ // Create the Section.
+ PIC16Section *S = new (Ctx) PIC16Section(Name, K, Address, Color);
+ S->T = Ty;
+ return S;
+}
+
+// A generic way to print all types of sections.
+void PIC16Section::PrintSwitchToSection(const MCAsmInfo &MAI,
+ raw_ostream &OS) const {
+ // Print name.
+ OS << getName() << '\t';
+
+ // Print type.
+ switch (getType()) {
+ default : llvm_unreachable ("unknown section type");
+ case UDATA: OS << "UDATA"; break;
+ case IDATA: OS << "IDATA"; break;
+ case ROMDATA: OS << "ROMDATA"; break;
+ case UDATA_SHR: OS << "UDATA_SHR"; break;
+ case UDATA_OVR: OS << "UDATA_OVR"; break;
+ case CODE: OS << "CODE"; break;
+ }
+
+ OS << '\t';
+
+ // Print Address.
+ OS << Address;
+
+ OS << '\n';
+}