powerpc: enable supported sanitizers on powerpc64*
1. Merge LLVM's 315d792130258a9b7250494be8d002ebb427b08f, adding support for FreeBSD/powerpc64*. 2. Add sanitizer list to lib/libclang_rt/Makefile, taken from the list of libraries that llvm-devel port builds. 3. powerpc64le supports the same sanitizers that powerpc64, but powerpc64le also supports xray* sanitizers. 4. lib/libclang_rt/xray/Makefile hardcodes amd64-specific files, so that needs to be conditionalized. 5. Sanitizers are not enabled for powerpc, because powerpc supports only builtins and profile. Reviewed by: dim Differential Revision: https://reviews.freebsd.org/D35228 Relnotes: yes MFC after: 3 days
This commit is contained in:
Piotr Kubaj
parent
9bf4983f54
commit
f5024381ac
@ -2080,12 +2080,19 @@ static void GetPcSpBp(void *context, uptr *pc, uptr *sp, uptr *bp) {
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*sp = ucontext->uc_mcontext.gregs[REG_UESP];
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# endif
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#elif defined(__powerpc__) || defined(__powerpc64__)
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# if SANITIZER_FREEBSD
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ucontext_t *ucontext = (ucontext_t *)context;
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*pc = ucontext->uc_mcontext.mc_srr0;
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*sp = ucontext->uc_mcontext.mc_frame[1];
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*bp = ucontext->uc_mcontext.mc_frame[31];
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# else
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ucontext_t *ucontext = (ucontext_t*)context;
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*pc = ucontext->uc_mcontext.regs->nip;
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*sp = ucontext->uc_mcontext.regs->gpr[PT_R1];
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// The powerpc{,64}-linux ABIs do not specify r31 as the frame
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// pointer, but GCC always uses r31 when we need a frame pointer.
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*bp = ucontext->uc_mcontext.regs->gpr[PT_R31];
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# endif
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#elif defined(__sparc__)
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#if defined(__arch64__) || defined(__sparcv9)
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#define STACK_BIAS 2047
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@ -2174,17 +2181,6 @@ void CheckASLR() {
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GetArgv()[0]);
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Die();
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}
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#elif SANITIZER_PPC64V2
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// Disable ASLR for Linux PPC64LE.
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int old_personality = personality(0xffffffff);
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if (old_personality != -1 && (old_personality & ADDR_NO_RANDOMIZE) == 0) {
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VReport(1, "WARNING: Program is being run with address space layout "
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"randomization (ASLR) enabled which prevents the thread and "
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"memory sanitizers from working on powerpc64le.\n"
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"ASLR will be disabled and the program re-executed.\n");
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CHECK_NE(personality(old_personality | ADDR_NO_RANDOMIZE), -1);
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ReExec();
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}
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#elif SANITIZER_FREEBSD
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int aslr_status;
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if (UNLIKELY(procctl(P_PID, 0, PROC_ASLR_STATUS, &aslr_status) == -1)) {
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@ -2201,6 +2197,18 @@ void CheckASLR() {
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CHECK_NE(procctl(P_PID, 0, PROC_ASLR_CTL, &aslr_ctl), -1);
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ReExec();
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}
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# elif SANITIZER_PPC64V2
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// Disable ASLR for Linux PPC64LE.
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int old_personality = personality(0xffffffff);
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if (old_personality != -1 && (old_personality & ADDR_NO_RANDOMIZE) == 0) {
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VReport(1,
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"WARNING: Program is being run with address space layout "
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"randomization (ASLR) enabled which prevents the thread and "
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"memory sanitizers from working on powerpc64le.\n"
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"ASLR will be disabled and the program re-executed.\n");
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CHECK_NE(personality(old_personality | ADDR_NO_RANDOMIZE), -1);
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ReExec();
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}
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#else
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// Do nothing
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#endif
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@ -2225,9 +2233,9 @@ void CheckMPROTECT() {
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Printf("This sanitizer is not compatible with enabled MPROTECT\n");
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Die();
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}
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#else
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# else
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// Do nothing
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#endif
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# endif
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}
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void CheckNoDeepBind(const char *filename, int flag) {
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@ -12,7 +12,22 @@
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#include <cstdint>
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#include <mutex>
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#ifdef __linux__
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#include <sys/platform/ppc.h>
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#elif defined(__FreeBSD__)
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#include <sys/types.h>
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#include <sys/sysctl.h>
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#define __ppc_get_timebase __builtin_ppc_get_timebase
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uint64_t __ppc_get_timebase_freq (void)
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{
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uint64_t tb_freq = 0;
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size_t length = sizeof(tb_freq);
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sysctlbyname("kern.timecounter.tc.timebase.frequency", &tb_freq, &length, nullptr, 0);
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return tb_freq;
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}
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#endif
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#include "xray_defs.h"
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@ -32,6 +32,31 @@ SUBDIR+= xray-fdr
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SUBDIR+= xray-profiling
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.endif # amd64
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.if ${MACHINE_ARCH} == "powerpc64" || ${MACHINE_ARCH} == "powerpc64le"
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SUBDIR+= include
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SUBDIR+= asan
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SUBDIR+= asan-preinit
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SUBDIR+= asan_cxx
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SUBDIR+= asan_dynamic
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SUBDIR+= asan_static
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SUBDIR+= msan
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SUBDIR+= msan_cxx
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SUBDIR+= stats
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SUBDIR+= stats_client
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SUBDIR+= tsan
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SUBDIR+= tsan_cxx
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SUBDIR+= ubsan_minimal
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SUBDIR+= ubsan_standalone
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SUBDIR+= ubsan_standalone_cxx
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.endif # powerpc64 || powerpc64le
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.if ${MACHINE_ARCH} == "powerpc64le"
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SUBDIR+= xray
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SUBDIR+= xray-basic
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SUBDIR+= xray-fdr
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SUBDIR+= xray-profiling
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.endif # powerpc64le
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.if ${MACHINE_CPUARCH} == "riscv"
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SUBDIR+= include
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SUBDIR+= asan
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@ -37,9 +37,18 @@ SRCS+= xray/xray_flags.cpp
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SRCS+= xray/xray_init.cpp
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SRCS+= xray/xray_interface.cpp
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SRCS+= xray/xray_log_interface.cpp
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SRCS+= xray/xray_trampoline_x86_64.S
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SRCS+= xray/xray_utils.cpp
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.if ${MACHINE_CPUARCH} == amd64
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SRCS+= xray/xray_trampoline_x86_64.S
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SRCS+= xray/xray_x86_64.cpp
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.endif # amd64
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.if ${MACHINE_ARCH} == powerpc64le
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SRCS+= xray/xray_powerpc64.cpp
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SRCS+= xray/xray_trampoline_powerpc64.cpp
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SRCS+= xray/xray_trampoline_powerpc64_asm.S
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.endif # powerpc64le
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.PATH: ${CRTSRC}/include/xray
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INCSDIR= ${CLANGDIR}/include/xray
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