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//===-- gen/abi-mips64.cpp - MIPS64 ABI description ------------*- C++ -*-===//
//
// LDC – the LLVM D compiler
//
// This file is distributed under the BSD-style LDC license. See the LICENSE
// file for details.
//
//===----------------------------------------------------------------------===//
//
// The MIPS64 N32 and N64 ABI can be found here:
// http://techpubs.sgi.com/library/dynaweb_docs/0640/SGI_Developer/books/Mpro_n32_ABI/sgi_html/index.html
//
//===----------------------------------------------------------------------===//
#include "gen/abi.h"
#include "gen/abi-generic.h"
#include "gen/abi-mips64.h"
#include "gen/dvalue.h"
#include "gen/irstate.h"
#include "gen/llvmhelpers.h"
#include "gen/tollvm.h"
struct MIPS64TargetABI : TargetABI {
const bool Is64Bit;
explicit MIPS64TargetABI(const bool Is64Bit) : Is64Bit(Is64Bit) {}
bool returnInArg(TypeFunction *tf, bool) override {
if (tf->isref()) {
return false;
}
Type *rt = tf->next->toBasetype();
if (!isPOD(rt))
return true;
// Return structs and static arrays on the stack. The latter is needed
// because otherwise LLVM tries to actually return the array in a number
// of physical registers, which leads, depending on the target, to
// either horrendous codegen or backend crashes.
return (rt->ty == TY::Tstruct || rt->ty == TY::Tsarray);
}
bool passByVal(TypeFunction *, Type *t) override {
TY ty = t->toBasetype()->ty;
return ty == TY::Tstruct || ty == TY::Tsarray;
}
void rewriteFunctionType(IrFuncTy &fty) override {
if (!fty.ret->byref) {
rewriteArgument(fty, *fty.ret);
}
for (auto arg : fty.args) {
if (!arg->byref) {
rewriteArgument(fty, *arg);
}
}
}
void rewriteArgument(IrFuncTy &fty, IrFuncTyArg &arg) override {
// FIXME
}
};
// The public getter for abi.cpp
TargetABI *getMIPS64TargetABI(bool Is64Bit) {
return new MIPS64TargetABI(Is64Bit);
}
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