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[Driver] Add support for crtbegin.o, crtend.o and libgloss lib to BareMetal
toolchain object This patch conditionalise the addition of crt{begin,end}.o object files along with addition of -lgloss lib based on whether libc selected is newlib or llvm libc. Since there is no way a user can specify which libc it wants to link against, currently passing valid GCCInstallation to driver will select newlib otherwise it will default to llvm libc. Moreover, this patch makes gnuld the default linker for baremetal toolchain object. User need to pass `-fuse-ld=lld` explicitly to driver to select lld This is the 2nd patch in the series of patches of merging RISCVToolchain into BareMetal toolchain object. RFC: https://discourse.llvm.org/t/merging-riscvtoolchain-and-baremetal-toolchains/75524 Change-Id: Ie06dc976c306cf04ec2733bbb2d271c57d201f86
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7 files changed

+218
-12
lines changed

7 files changed

+218
-12
lines changed

‎clang/lib/Driver/ToolChains/BareMetal.cpp

+30-4
Original file line numberDiff line numberDiff line change
@@ -545,9 +545,27 @@ void baremetal::Linker::ConstructJob(Compilation &C, const JobAction &JA,
545545
CmdArgs.push_back(Arch == llvm::Triple::aarch64_be ? "-EB" : "-EL");
546546
}
547547

548-
if (!Args.hasArg(options::OPT_nostdlib, options::OPT_nostartfiles,
549-
options::OPT_r)) {
550-
CmdArgs.push_back(Args.MakeArgString(TC.GetFilePath("crt0.o")));
548+
bool WantCRTs =
549+
!Args.hasArg(options::OPT_nostdlib, options::OPT_nostartfiles);
550+
551+
const char *crtbegin, *crtend;
552+
if (WantCRTs) {
553+
if (!Args.hasArg(options::OPT_r))
554+
CmdArgs.push_back(Args.MakeArgString(TC.GetFilePath("crt0.o")));
555+
if (TC.hasValidGCCInstallation() || hasGCCToolChainAlongSideClang(D)) {
556+
auto RuntimeLib = TC.GetRuntimeLibType(Args);
557+
if (RuntimeLib == ToolChain::RLT_Libgcc) {
558+
crtbegin = "crtbegin.o";
559+
crtend = "crtend.o";
560+
} else {
561+
assert(RuntimeLib == ToolChain::RLT_CompilerRT);
562+
crtbegin =
563+
TC.getCompilerRTArgString(Args, "crtbegin", ToolChain::FT_Object);
564+
crtend =
565+
TC.getCompilerRTArgString(Args, "crtend", ToolChain::FT_Object);
566+
}
567+
CmdArgs.push_back(Args.MakeArgString(TC.GetFilePath(crtbegin)));
568+
}
551569
}
552570

553571
Args.addAllArgs(CmdArgs, {options::OPT_L, options::OPT_T_Group,
@@ -570,9 +588,12 @@ void baremetal::Linker::ConstructJob(Compilation &C, const JobAction &JA,
570588
}
571589

572590
if (!Args.hasArg(options::OPT_nostdlib, options::OPT_nodefaultlibs)) {
591+
CmdArgs.push_back("--start-group");
573592
AddRunTimeLibs(TC, D, CmdArgs, Args);
574-
575593
CmdArgs.push_back("-lc");
594+
if (TC.hasValidGCCInstallation() || hasGCCToolChainAlongSideClang(D))
595+
CmdArgs.push_back("-lgloss");
596+
CmdArgs.push_back("--end-group");
576597
}
577598

578599
if (D.isUsingLTO()) {
@@ -588,6 +609,11 @@ void baremetal::Linker::ConstructJob(Compilation &C, const JobAction &JA,
588609
addLTOOptions(TC, Args, CmdArgs, Output, *Input,
589610
D.getLTOMode() == LTOK_Thin);
590611
}
612+
613+
if ((TC.hasValidGCCInstallation() || hasGCCToolChainAlongSideClang(D)) &&
614+
WantCRTs)
615+
CmdArgs.push_back(Args.MakeArgString(TC.GetFilePath(crtend)));
616+
591617
if (TC.getTriple().isRISCV())
592618
CmdArgs.push_back("-X");
593619

‎clang/lib/Driver/ToolChains/BareMetal.h

+1-2
Original file line numberDiff line numberDiff line change
@@ -36,6 +36,7 @@ class LLVM_LIBRARY_VISIBILITY BareMetal : public Generic_ELF {
3636
Tool *buildStaticLibTool() const override;
3737

3838
public:
39+
bool hasValidGCCInstallation() const {return GCCInstallation.isValid(); }
3940
bool isBareMetal() const override { return true; }
4041
bool isCrossCompiling() const override { return true; }
4142
bool HasNativeLLVMSupport() const override { return true; }
@@ -60,8 +61,6 @@ class LLVM_LIBRARY_VISIBILITY BareMetal : public Generic_ELF {
6061
return ToolChain::CST_Libcxx;
6162
}
6263

63-
const char *getDefaultLinker() const override { return "ld.lld"; }
64-
6564
void
6665
AddClangSystemIncludeArgs(const llvm::opt::ArgList &DriverArgs,
6766
llvm::opt::ArgStringList &CC1Args) const override;

‎clang/test/Driver/aarch64-toolchain-extra.c

+10-3
Original file line numberDiff line numberDiff line change
@@ -15,14 +15,21 @@
1515
// RUN: mkdir -p %t/aarch64-nogcc/bin
1616
// RUN: ln -s %clang %t/aarch64-nogcc/bin/clang
1717
// RUN: ln -s %S/Inputs/basic_aarch64_nogcc_tree/aarch64-none-elf %t/aarch64-nogcc/aarch64-none-elf
18+
// RUN: ln -s %S/Inputs/basic_aarch64_nogcc_tree/bin/aarch64-none-elf-ld %t/aarch64-nogcc/bin/aarch64-none-elf-ld
1819
// RUN: %t/aarch64-nogcc/bin/clang %s -### -no-canonical-prefixes \
1920
// RUN: --gcc-toolchain=%t/aarch64-nogcc/invalid \
2021
// RUN: --target=aarch64-none-elf --rtlib=libgcc -fuse-ld=ld 2>&1 \
21-
// RUN: | FileCheck -check-prefix=C-ARM-BAREMETAL-NOGCC %s
22+
// RUN: | FileCheck -check-prefix=C-AARCH64-BAREMETAL-NOGCC %s
2223

2324
// RUN: %t/aarch64-nogcc/bin/clang %s -### -no-canonical-prefixes \
2425
// RUN: --sysroot=%t/aarch64-nogcc/bin/../aarch64-none-elf \
2526
// RUN: --target=aarch64-none-elf --rtlib=libgcc -fuse-ld=ld 2>&1 \
26-
// RUN: | FileCheck -check-prefix=C-ARM-BAREMETAL-NOGCC %s
27+
// RUN: | FileCheck -check-prefix=C-AARCH64-BAREMETAL-NOGCC %s
2728

28-
// C-ARM-BAREMETAL-NOGCC: "-internal-isystem" "{{.*}}/aarch64-nogcc/bin/../aarch64-none-elf/include"
29+
// C-AARCH64-BAREMETAL-NOGCC: "-internal-isystem" "{{.*}}/aarch64-nogcc/bin/../aarch64-none-elf/include"
30+
// C-AARCH64-BAREMETAL-NOGCC: "{{.*}}/aarch64-nogcc/bin/aarch64-none-elf-ld"
31+
// C-AARCH64-BAREMETAL-NOGCC: "{{.*}}/aarch64-nogcc/bin/../aarch64-none-elf/lib/crt0.o"
32+
// C-AARCH64-BAREMETAL-NOGCC: "{{.*}}/aarch64-nogcc/{{.*}}/aarch64-none-elf/lib/crtbegin.o"
33+
// C-AARCH64-BAREMETAL-NOGCC: "{{.*}}/aarch64-nogcc/bin/../aarch64-none-elf/lib"
34+
// C-AARCH64-BAREMETAL-NOGCC: "--start-group" "-lgcc" "--as-needed" "-lgcc_s" "--no-as-needed" "-lc" "-lgloss" "--end-group"
35+
// C-AARCH64-BAREMETAL-NOGCC: "{{.*}}/aarch64-nogcc/{{.*}}/aarch64-none-elf/lib/crtend.o"

‎clang/test/Driver/aarch64-toolchain.c

+83
Original file line numberDiff line numberDiff line change
@@ -1,5 +1,12 @@
11
// UNSUPPORTED: system-windows
22

3+
// Test interaction with -fuse-ld=lld
4+
// RUN: %clang -### %s -fuse-ld=lld \
5+
// RUN: --target=aarch64-none-elf \
6+
// RUN: --gcc-toolchain=%S/Inputs/basic_aarch64_gcc_tree 2>&1 \
7+
// RUN: | FileCheck -check-prefix=LLD %s
8+
// LLD: ld.lld
9+
310
// RUN: %clang -### %s -fuse-ld= \
411
// RUN: --target=aarch64-none-elf --rtlib=libgcc \
512
// RUN: --gcc-toolchain=%S/Inputs/basic_aarch64_gcc_tree \
@@ -9,6 +16,14 @@
916
// C-AARCH64-BAREMETAL: "-cc1" "-triple" "aarch64-unknown-none-elf"
1017
// C-AARCH64-BAREMETAL: "-isysroot" "{{.*}}Inputs/basic_aarch64_gcc_tree/aarch64-none-elf"
1118
// C-AARCH64-BAREMETAL: "-internal-isystem" "{{.*}}Inputs/basic_aarch64_gcc_tree/aarch64-none-elf/include"
19+
// C-AARCH64-BAREMETAL: "{{.*}}/Inputs/basic_aarch64_gcc_tree/lib/gcc/aarch64-none-elf/8.2.1/../../../../bin/aarch64-none-elf-ld"
20+
// C-AARCH64-BAREMETAL: "{{.*}}.o" "-Bstatic" "-EL"
21+
// C-AARCH64-BAREMETAL: "{{.*}}/Inputs/basic_aarch64_gcc_tree/aarch64-none-elf/lib/crt0.o"
22+
// C-AARCH64-BAREMETAL: "{{.*}}/Inputs/basic_aarch64_gcc_tree/lib/gcc/aarch64-none-elf/8.2.1/crtbegin.o"
23+
// C-AARCH64-BAREMETAL: "-L{{.*}}/Inputs/basic_aarch64_gcc_tree/lib/gcc/aarch64-none-elf/8.2.1"
24+
// C-AARCH64-BAREMETAL: "-L{{.*}}/Inputs/basic_aarch64_gcc_tree/aarch64-none-elf/lib"
25+
// C-AARCH64-BAREMETAL: "--start-group" "-lgcc" "--as-needed" "-lgcc_s" "--no-as-needed" "-lc" "-lgloss" "--end-group"
26+
// C-AARCH64-BAREMETAL: "{{.*}}/Inputs/basic_aarch64_gcc_tree/lib/gcc/aarch64-none-elf/8.2.1/crtend.o"
1227

1328
// RUN: %clang -### %s -fuse-ld= \
1429
// RUN: --target=aarch64-none-elf --rtlib=libgcc \
@@ -18,6 +33,14 @@
1833

1934
// C-AARCH64-BAREMETAL-NOSYSROOT: "-cc1" "-triple" "aarch64-unknown-none-elf"
2035
// C-AARCH64-BAREMETAL-NOSYSROOT: "-internal-isystem" "{{.*}}/Inputs/basic_aarch64_gcc_tree/lib/gcc/aarch64-none-elf/8.2.1/../../../../aarch64-none-elf/include"
36+
// C-AARCH64-BAREMETAL-NOSYSROOT: "{{.*}}/Inputs/basic_aarch64_gcc_tree/lib/gcc/aarch64-none-elf/8.2.1/../../../../bin/aarch64-none-elf-ld"
37+
// C-AARCH64-BAREMETAL-NOSYSROOT: "{{.*}}.o" "-Bstatic" "-EL"
38+
// C-AARCH64-BAREMETAL-NOSYSROOT: "{{.*}}/Inputs/basic_aarch64_gcc_tree/lib/gcc/aarch64-none-elf/8.2.1/../../../../aarch64-none-elf/lib/crt0.o"
39+
// C-AARCH64-BAREMETAL-NOSYSROOT: "{{.*}}/Inputs/basic_aarch64_gcc_tree/lib/gcc/aarch64-none-elf/8.2.1/crtbegin.o"
40+
// C-AARCH64-BAREMETAL-NOSYSROOT: "-L{{.*}}/Inputs/basic_aarch64_gcc_tree/lib/gcc/aarch64-none-elf/8.2.1"
41+
// C-AARCH64-BAREMETAL-NOSYSROOT: "-L{{.*}}/Inputs/basic_aarch64_gcc_tree/lib/gcc/aarch64-none-elf/8.2.1/../../../../aarch64-none-elf/lib"
42+
// C-AARCH64-BAREMETAL-NOSYSROOT: "--start-group" "-lgcc" "--as-needed" "-lgcc_s" "--no-as-needed" "-lc" "-lgloss" "--end-group"
43+
// C-AARCH64-BAREMETAL-NOSYSROOT: "{{.*}}/Inputs/basic_aarch64_gcc_tree/lib/gcc/aarch64-none-elf/8.2.1/crtend.o"
2144

2245
// RUN: %clangxx -### %s -fuse-ld= \
2346
// RUN: --target=aarch64-none-elf -stdlib=libstdc++ --rtlib=libgcc \
@@ -29,6 +52,14 @@
2952
// CXX-AARCH64-BAREMETAL: "-internal-isystem" "{{.*}}/Inputs/basic_aarch64_gcc_tree/aarch64-none-elf/include/c++/8.2.1/backward"
3053
// CXX-AARCH64-BAREMETAL: "-internal-isystem" "{{.*}}/Inputs/basic_aarch64_gcc_tree/aarch64-none-elf/include/c++/8.2.1"
3154
// CXX-AARCH64-BAREMETAL: "-internal-isystem" "{{.*}}/Inputs/basic_aarch64_gcc_tree/aarch64-none-elf/include"
55+
// CXX-AARCH64-BAREMETAL: "{{.*}}/Inputs/basic_aarch64_gcc_tree/lib/gcc/aarch64-none-elf/8.2.1/../../../../bin/aarch64-none-elf-ld"
56+
// CXX-AARCH64-BAREMETAL: "{{.*}}.o" "-Bstatic" "-EL"
57+
// CXX-AARCH64-BAREMETAL: "{{.*}}/Inputs/basic_aarch64_gcc_tree/aarch64-none-elf/lib/crt0.o"
58+
// CXX-AARCH64-BAREMETAL: "{{.*}}/Inputs/basic_aarch64_gcc_tree/lib/gcc/aarch64-none-elf/8.2.1/crtbegin.o"
59+
// CXX-AARCH64-BAREMETAL: "-L{{.*}}/Inputs/basic_aarch64_gcc_tree/lib/gcc/aarch64-none-elf/8.2.1"
60+
// CXX-AARCH64-BAREMETAL: "-L{{.*}}/Inputs/basic_aarch64_gcc_tree/aarch64-none-elf/lib"
61+
// CXX-AARCH64-BAREMETAL: "-lstdc++" "-lm" "--start-group" "-lgcc_s" "-lgcc" "-lc" "-lgloss" "--end-group"
62+
// CXX-AARCH64-BAREMETAL: "{{.*}}/Inputs/basic_aarch64_gcc_tree/lib/gcc/aarch64-none-elf/8.2.1/crtend.o"
3263

3364
// RUN: %clangxx -### %s -fuse-ld= \
3465
// RUN: --target=aarch64-none-elf -stdlib=libstdc++ --rtlib=libgcc \
@@ -40,6 +71,14 @@
4071
// CXX-AARCH64-BAREMETAL-NOSYSROOT: "-internal-isystem" "{{.*}}/Inputs/basic_aarch64_gcc_tree/lib/gcc/aarch64-none-elf/8.2.1/../../../../aarch64-none-elf/include/c++/8.2.1/backward"
4172
// CXX-AARCH64-BAREMETAL-NOSYSROOT: "-internal-isystem" "{{.*}}/Inputs/basic_aarch64_gcc_tree/lib/gcc/aarch64-none-elf/8.2.1/../../../../aarch64-none-elf/include/c++/8.2.1"
4273
// CXX-AARCH64-BAREMETAL-NOSYSROOT: "-internal-isystem" "{{.*}}/Inputs/basic_aarch64_gcc_tree/lib/gcc/aarch64-none-elf/8.2.1/../../../../aarch64-none-elf/include"
74+
// CXX-AARCH64-BAREMETAL-NOSYSROOT: "{{.*}}/Inputs/basic_aarch64_gcc_tree/lib/gcc/aarch64-none-elf/8.2.1/../../../../bin/aarch64-none-elf-ld"
75+
// CXX-AARCH64-BAREMETAL-NOSYSROOT: "{{.*}}.o" "-Bstatic" "-EL"
76+
// CXX-AARCH64-BAREMETAL-NOSYSROOT: "{{.*}}/Inputs/basic_aarch64_gcc_tree/lib/gcc/aarch64-none-elf/8.2.1/../../../../aarch64-none-elf/lib/crt0.o"
77+
// CXX-AARCH64-BAREMETAL-NOSYSROOT: "{{.*}}/Inputs/basic_aarch64_gcc_tree/lib/gcc/aarch64-none-elf/8.2.1/crtbegin.o"
78+
// CXX-AARCH64-BAREMETAL-NOSYSROOT: "-L{{.*}}/Inputs/basic_aarch64_gcc_tree/lib/gcc/aarch64-none-elf/8.2.1"
79+
// CXX-AARCH64-BAREMETAL-NOSYSROOT: "-L{{.*}}/Inputs/basic_aarch64_gcc_tree/lib/gcc/aarch64-none-elf/8.2.1/../../../../aarch64-none-elf/lib"
80+
// CXX-AARCH64-BAREMETAL-NOSYSROOT: "-lstdc++" "-lm" "--start-group" "-lgcc_s" "-lgcc" "-lc" "-lgloss" "--end-group"
81+
// CXX-AARCH64-BAREMETAL-NOSYSROOT: "{{.*}}/Inputs/basic_aarch64_gcc_tree/lib/gcc/aarch64-none-elf/8.2.1/crtend.o"
4382

4483
// RUN: %clangxx -### %s -fuse-ld= \
4584
// RUN: --target=aarch64-none-elf -stdlib=libc++ --rtlib=libgcc \
@@ -50,6 +89,14 @@
5089
// CXX-AARCH64-BAREMETAL-LIBCXX: "-isysroot" "{{.*}}Inputs/basic_aarch64_gcc_tree/aarch64-none-elf"
5190
// CXX-AARCH64-BAREMETAL-LIBCXX: "-internal-isystem" "{{.*}}/Inputs/basic_aarch64_gcc_tree/aarch64-none-elf/include/c++/v1"
5291
// CXX-AARCH64-BAREMETAL-LIBCXX: "-internal-isystem" "{{.*}}/Inputs/basic_aarch64_gcc_tree/aarch64-none-elf/include"
92+
// CXX-AARCH64-BAREMETAL-LIBCXX: "{{.*}}/Inputs/basic_aarch64_gcc_tree/lib/gcc/aarch64-none-elf/8.2.1/../../../../bin/aarch64-none-elf-ld
93+
// CXX-AARCH64-BAREMETAL-LIBCXX: "{{.*}}.o" "-Bstatic" "-EL"
94+
// CXX-AARCH64-BAREMETAL-LIBCXX: "{{.*}}/Inputs/basic_aarch64_gcc_tree/aarch64-none-elf/lib/crt0.o"
95+
// CXX-AARCH64-BAREMETAL-LIBCXX: "{{.*}}/Inputs/basic_aarch64_gcc_tree/lib/gcc/aarch64-none-elf/8.2.1/crtbegin.o"
96+
// CXX-AARCH64-BAREMETAL-LIBCXX: "-L{{.*}}/Inputs/basic_aarch64_gcc_tree/lib/gcc/aarch64-none-elf/8.2.1"
97+
// CXX-AARCH64-BAREMETAL-LIBCXX: "-L{{.*}}/Inputs/basic_aarch64_gcc_tree/aarch64-none-elf/lib"
98+
// CXX-AARCH64-BAREMETAL-LIBCXX: "-lc++" "-lm" "--start-group" "-lgcc_s" "-lgcc" "-lc" "-lgloss" "--end-group"
99+
// CXX-AARCH64-BAREMETAL-LIBCXX: "{{.*}}/Inputs/basic_aarch64_gcc_tree/lib/gcc/aarch64-none-elf/8.2.1/crtend.o"
53100

54101
// RUN: %clangxx -### %s -fuse-ld= \
55102
// RUN: --target=aarch64-none-elf -stdlib=libc++ --rtlib=libgcc \
@@ -59,3 +106,39 @@
59106

60107
// CXX-AARCH64-BAREMETAL-NOSYSROOT-LIBCXX: "-internal-isystem" "{{.*}}/Inputs/basic_aarch64_gcc_tree/lib/gcc/aarch64-none-elf/8.2.1/../../../../aarch64-none-elf/include/c++/v1"
61108
// CXX-AARCH64-BAREMETAL-NOSYSROOT-LIBCXX: "-internal-isystem" "{{.*}}/Inputs/basic_aarch64_gcc_tree/lib/gcc/aarch64-none-elf/8.2.1/../../../../aarch64-none-elf/include"
109+
// CXX-AARCH64-BAREMETAL-NOSYSROOT-LIBCXX: "{{.*}}/Inputs/basic_aarch64_gcc_tree/lib/gcc/aarch64-none-elf/8.2.1/../../../../bin/aarch64-none-elf-ld"
110+
// CXX-AARCH64-BAREMETAL-NOSYSROOT-LIBCXX: "{{.*}}.o" "-Bstatic" "-EL"
111+
// CXX-AARCH64-BAREMETAL-NOSYSROOT-LIBCXX: "{{.*}}/Inputs/basic_aarch64_gcc_tree/lib/gcc/aarch64-none-elf/8.2.1/../../../../aarch64-none-elf/lib/crt0.o"
112+
// CXX-AARCH64-BAREMETAL-NOSYSROOT-LIBCXX: "{{.*}}/Inputs/basic_aarch64_gcc_tree/lib/gcc/aarch64-none-elf/8.2.1/crtbegin.o"
113+
// CXX-AARCH64-BAREMETAL-NOSYSROOT-LIBCXX: "-L{{.*}}/Inputs/basic_aarch64_gcc_tree/lib/gcc/aarch64-none-elf/8.2.1"
114+
// CXX-AARCH64-BAREMETAL-NOSYSROOT-LIBCXX: "-L{{.*}}/Inputs/basic_aarch64_gcc_tree/lib/gcc/aarch64-none-elf/8.2.1/../../../../aarch64-none-elf/lib"
115+
// CXX-AARCH64-BAREMETAL-NOSYSROOT-LIBCXX: "-lc++" "-lm" "--start-group" "-lgcc_s" "-lgcc" "-lc" "-lgloss" "--end-group"
116+
// CXX-AARCH64-BAREMETAL-NOSYSROOT-LIBCXX: "{{.*}}/Inputs/basic_aarch64_gcc_tree/lib/gcc/aarch64-none-elf/8.2.1/crtend.o"
117+
118+
// RUN: %clang -### %s -fuse-ld= \
119+
// RUN: --target=aarch64-none-elf --rtlib=compiler-rt \
120+
// RUN: --gcc-toolchain=%S/Inputs/basic_aarch64_gcc_tree \
121+
// RUN: --sysroot=%S/Inputs/basic_aarch64_gcc_tree/aarch64-none-elf 2>&1 \
122+
// RUN: | FileCheck -check-prefix=AARCH64-BAREMETAL-COMPILER-RT %s
123+
124+
// AARCH64-BAREMETAL-COMPILER-RT: "{{.*}}crt0.o"
125+
// AARCH64-BAREMETAL-COMPILER-RT: "{{.*}}clang_rt.crtbegin.o"
126+
// AARCH64-BAREMETAL-COMPILER-RT: "--start-group" "{{.*}}libclang_rt.builtins.a" "-lc" "-lgloss" "--end-group"
127+
// AARCH64-BAREMETAL-COMPILER-RT: "{{.*}}clang_rt.crtend.o"
128+
129+
// RUN: %clang -### %s -fuse-ld= \
130+
// RUN: --target=aarch64-none-elf --unwindlib=libunwind \
131+
// RUN: --gcc-toolchain=%S/Inputs/basic_aarch64_gcc_tree \
132+
// RUN: --sysroot=%S/Inputs/basic_aarch64_gcc_tree/aarch64-none-elf 2>&1 \
133+
// RUN: | FileCheck -check-prefix=AARCH64-BAREMETAL-UNWINDLIB %s
134+
135+
// RUN: %clang -### %s -fuse-ld= \
136+
// RUN: --target=aarch64-none-elf --rtlib=compiler-rt --unwindlib=libunwind \
137+
// RUN: --gcc-toolchain=%S/Inputs/basic_aarch64_gcc_tree \
138+
// RUN: --sysroot=%S/Inputs/basic_aarch64_gcc_tree/aarch64-none-elf 2>&1 \
139+
// RUN: | FileCheck -check-prefix=AARCH64-BAREMETAL-UNWINDLIB %s
140+
141+
// AARCH64-BAREMETAL-UNWINDLIB: "{{.*}}crt0.o"
142+
// AARCH64-BAREMETAL-UNWINDLIB: "{{.*}}clang_rt.crtbegin.o"
143+
// AARCH64-BAREMETAL-UNWINDLIB: "--start-group" "{{.*}}libclang_rt.builtins.a" "--as-needed" "-lunwind" "--no-as-needed" "-lc" "-lgloss" "--end-group"
144+
// AARCH64-BAREMETAL-UNWINDLIB: "{{.*}}clang_rt.crtend.o"

‎clang/test/Driver/arm-toolchain-extra.c

+7
Original file line numberDiff line numberDiff line change
@@ -15,6 +15,7 @@
1515
// RUN: mkdir -p %t/arm-nogcc/bin
1616
// RUN: ln -s %clang %t/arm-nogcc/bin/clang
1717
// RUN: ln -s %S/Inputs/basic_arm_nogcc_tree/armv6m-none-eabi %t/arm-nogcc/armv6m-none-eabi
18+
// RUN: ln -s %S/Inputs/basic_arm_nogcc_tree/bin/armv6m-none-eabi-ld %t/arm-nogcc/bin/armv6m-none-eabi-ld
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// RUN: %t/arm-nogcc/bin/clang %s -### -no-canonical-prefixes \
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// RUN: --gcc-toolchain=%t/arm-nogcc/invalid \
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// RUN: --target=armv6m-none-eabi --rtlib=libgcc -fuse-ld=ld 2>&1 \
@@ -26,4 +27,10 @@
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// RUN: | FileCheck -check-prefix=C-ARM-BAREMETAL-NOGCC %s
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// C-ARM-BAREMETAL-NOGCC: "-internal-isystem" "{{.*}}/arm-nogcc/bin/../armv6m-none-eabi/include"
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// C-ARM-BAREMETAL-NOGCC: "{{.*}}/arm-nogcc/bin/armv6m-none-eabi-ld"
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// C-ARM-BAREMETAL-NOGCC: "{{.*}}/arm-nogcc/bin/../armv6m-none-eabi/lib/crt0.o"
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// C-ARM-BAREMETAL-NOGCC: "{{.*}}/arm-nogcc/{{.*}}/armv6m-none-eabi/lib/crtbegin.o"
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// C-ARM-BAREMETAL-NOGCC: "{{.*}}/arm-nogcc/bin/../armv6m-none-eabi/lib"
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// C-ARM-BAREMETAL-NOGCC: "--start-group" "-lgcc" "--as-needed" "-lgcc_s" "--no-as-needed" "-lc" "-lgloss" "--end-group"
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// C-ARM-BAREMETAL-NOGCC: "{{.*}}/arm-nogcc/{{.*}}/armv6m-none-eabi/lib/crtend.o"
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