aturetsk created this revision.
aturetsk added reviewers: rsmith, tra, thakis, ddunbar, bob.wilson, dougk.
aturetsk added subscribers: cfe-commits, zinovy.nis, DavidKreitzer.
Add -miamcu option which:
* Sets IAMCU triple
* Sets IAMCU ABI
* Enforces static compilation
http://reviews.llvm.org/D18398
Files:
include/clang/Driver/Options.td
lib/Driver/Driver.cpp
lib/Driver/Tools.cpp
test/Driver/miamcu-opt.c
Index: test/Driver/miamcu-opt.c
===================================================================
--- /dev/null
+++ test/Driver/miamcu-opt.c
@@ -0,0 +1,18 @@
+// RUN: %clang -miamcu %s -### -o %t.o 2>&1 | FileCheck %s
+// RUN: %clang -miamcu -m32 %s -### -o %t.o 2>&1 | FileCheck %s
+// RUN: %clang -miamcu -target x86_64-unknown-linux-gnu %s -### -o %t.o 2>&1 | FileCheck %s
+// RUN: %clang -miamcu -m64 %s -### -o %t.o 2>&1 | FileCheck %s -check-prefix=ERROR
+// RUN: %clang -miamcu -dynamic %s -### -o %t.o 2>&1 | FileCheck -check-prefix=CHECK -check-prefix=DYNAMIC %s
+
+// ERROR: error: invalid argument '-miamcu' not allowed with '-m64'
+
+// DYNAMIC: warning: argument unused during compilation: '-dynamic'
+
+// CHECK: "-cc1"
+// CHECK: "-triple" "i586-intel-elfiamcu"
+// CHECK: "-static-define"
+// CHECK: "-mfloat-abi" "soft"
+// CHECK: "-mstack-alignment=4"
+
+// CHECK: bin/gcc
+// CHECK: "-static"
Index: lib/Driver/Tools.cpp
===================================================================
--- lib/Driver/Tools.cpp
+++ lib/Driver/Tools.cpp
@@ -2119,6 +2119,13 @@
<< A->getOption().getName() << Value;
}
}
+
+ // Set flags to support MCU ABI.
+ if (Args.hasArg(options::OPT_miamcu)) {
+ CmdArgs.push_back("-mfloat-abi");
+ CmdArgs.push_back("soft");
+ CmdArgs.push_back("-mstack-alignment=4");
+ }
}
void Clang::AddHexagonTargetArgs(const ArgList &Args,
Index: lib/Driver/Driver.cpp
===================================================================
--- lib/Driver/Driver.cpp
+++ lib/Driver/Driver.cpp
@@ -210,6 +210,7 @@
DerivedArgList *Driver::TranslateInputArgs(const InputArgList &Args) const {
DerivedArgList *DAL = new DerivedArgList(Args);
+ bool HasMiamcu = Args.hasArg(options::OPT_miamcu);
bool HasNostdlib = Args.hasArg(options::OPT_nostdlib);
bool HasNodefaultlib = Args.hasArg(options::OPT_nodefaultlibs);
for (Arg *A : Args) {
@@ -275,9 +276,19 @@
continue;
}
+ // Ignore -dynamic if -miamcu is present.
+ if (A->getOption().matches(options::OPT_dynamic) && HasMiamcu) {
+ Diag(diag::warn_drv_unused_argument) << "-dynamic";
+ continue;
+ }
+
DAL->append(A);
}
+ // Enforce -static if -miamcu is present.
+ if (HasMiamcu)
+ DAL->AddFlagArg(0, Opts->getOption(options::OPT_static));
+
// Add a default value of -mlinker-version=, if one was given and the user
// didn't specify one.
#if defined(HOST_LINK_VERSION)
@@ -296,7 +307,8 @@
///
/// This routine provides the logic to compute a target triple from various
/// args passed to the driver and the default triple string.
-static llvm::Triple computeTargetTriple(StringRef DefaultTargetTriple,
+static llvm::Triple computeTargetTriple(const Driver &D,
+ StringRef DefaultTargetTriple,
const ArgList &Args,
StringRef DarwinArchName = "") {
// FIXME: Already done in Compilation *Driver::BuildCompilation
@@ -341,8 +353,9 @@
return Target;
// Handle pseudo-target flags '-m64', '-mx32', '-m32' and '-m16'.
- if (Arg *A = Args.getLastArg(options::OPT_m64, options::OPT_mx32,
- options::OPT_m32, options::OPT_m16)) {
+ Arg *A = Args.getLastArg(options::OPT_m64, options::OPT_mx32,
+ options::OPT_m32, options::OPT_m16);
+ if (A) {
llvm::Triple::ArchType AT = llvm::Triple::UnknownArch;
if (A->getOption().matches(options::OPT_m64)) {
@@ -367,6 +380,21 @@
Target.setArch(AT);
}
+ // Handle -miamcu flag.
+ if (Args.hasArg(options::OPT_miamcu)) {
+ if (A && !A->getOption().matches(options::OPT_m32))
+ D.Diag(diag::err_drv_argument_not_allowed_with)
+ << "-miamcu" << A->getBaseArg().getAsString(Args);
+
+ Target.setArch(llvm::Triple::x86);
+ Target.setArchName("i586");
+ Target.setEnvironment(llvm::Triple::UnknownEnvironment);
+ Target.setEnvironmentName("");
+ Target.setOS(llvm::Triple::ELFIAMCU);
+ Target.setVendor(llvm::Triple::UnknownVendor);
+ Target.setVendorName("intel");
+ }
+
return Target;
}
@@ -501,8 +529,8 @@
DerivedArgList *TranslatedArgs = TranslateInputArgs(*UArgs);
// Owned by the host.
- const ToolChain &TC =
- getToolChain(*UArgs, computeTargetTriple(DefaultTargetTriple, *UArgs));
+ const ToolChain &TC = getToolChain(
+ *UArgs, computeTargetTriple(*this, DefaultTargetTriple, *UArgs));
// The compilation takes ownership of Args.
Compilation *C = new Compilation(*this, TC, UArgs.release(), TranslatedArgs);
@@ -1957,9 +1985,9 @@
const char *ArchName = BAA->getArchName();
if (ArchName)
- TC = &getToolChain(
- C.getArgs(),
- computeTargetTriple(DefaultTargetTriple, C.getArgs(), ArchName));
+ TC = &getToolChain(C.getArgs(),
+ computeTargetTriple(*this, DefaultTargetTriple,
+ C.getArgs(), ArchName));
else
TC = &C.getDefaultToolChain();
Index: include/clang/Driver/Options.td
===================================================================
--- include/clang/Driver/Options.td
+++ include/clang/Driver/Options.td
@@ -1277,6 +1277,8 @@
def m64 : Flag<["-"], "m64">, Group<m_Group>, Flags<[DriverOption, CoreOption]>;
def mx32 : Flag<["-"], "mx32">, Group<m_Group>, Flags<[DriverOption, CoreOption]>;
def mabi_EQ : Joined<["-"], "mabi=">, Group<m_Group>;
+def miamcu : Flag<["-"], "miamcu">, Group<m_Group>, Flags<[DriverOption, CoreOption]>,
+ HelpText<"Use Intel MCU ABI.">;
def malign_functions_EQ : Joined<["-"], "malign-functions=">, Group<clang_ignored_m_Group>;
def malign_loops_EQ : Joined<["-"], "malign-loops=">, Group<clang_ignored_m_Group>;
def malign_jumps_EQ : Joined<["-"], "malign-jumps=">, Group<clang_ignored_m_Group>;
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