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Recognize all NetBSD architectures in UBSan 

Summary:
Use uniform accessors for Program Pointer,
Stack Pointer and Frame Pointer.

Remove CPU check in UBSan supported platforms
and rely only on the OS type.

This adds NetBSD support in GetPcSpBp() for:
 - ARM
 - ARM64
 - HPPA
 - PowerPC/PowerPC64
 - SPARC/SPARC64
 - MIPS
 - DEC Alpha AXP
 - DEC VAX
 - M68K and M68010
 - SH3
 - IA64
 - OR1K
 - RISCV

Sponsored by <The NetBSD Foundation>

Reviewers: joerg, vitalybuka, ro

Reviewed By: vitalybuka

Subscribers: aemerson, jyknight, sdardis, kubamracek, arichardson, llvm-commits, kristof.beyls, fedor.sergeev, #sanitizers

Tags: #sanitizers

Differential Revision: https://reviews.llvm.org/D43021

llvm-svn: 325431
This commit is contained in:
Kamil Rytarowski 2018-02-17 13:35:09 +00:00
parent 7d4a974d8b
commit 7cde46764a
2 changed files with 10 additions and 18 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

18
compiler-rt/lib/sanitizer_common/sanitizer_linux.cc
View File

@ -1725,7 +1725,13 @@ void SignalContext::DumpAllRegisters(void *context) {
}
static void GetPcSpBp(void *context, uptr *pc, uptr *sp, uptr *bp) {
#if defined(__arm__)
#if SANITIZER_NETBSD
// This covers all NetBSD architectures
ucontext_t *ucontext = (ucontext_t *)context;
*pc = _UC_MACHINE_PC(ucontext);
*bp = _UC_MACHINE_FP(ucontext);
*sp = _UC_MACHINE_SP(ucontext);
#elif defined(__arm__)
ucontext_t *ucontext = (ucontext_t*)context;
*pc = ucontext->uc_mcontext.arm_pc;
*bp = ucontext->uc_mcontext.arm_fp;
@ -1747,11 +1753,6 @@ static void GetPcSpBp(void *context, uptr *pc, uptr *sp, uptr *bp) {
*pc = ucontext->uc_mcontext.mc_rip;
*bp = ucontext->uc_mcontext.mc_rbp;
*sp = ucontext->uc_mcontext.mc_rsp;
#elif SANITIZER_NETBSD
ucontext_t *ucontext = (ucontext_t *)context;
*pc = ucontext->uc_mcontext.__gregs[_REG_RIP];
*bp = ucontext->uc_mcontext.__gregs[_REG_RBP];
*sp = ucontext->uc_mcontext.__gregs[_REG_RSP];
# else
ucontext_t *ucontext = (ucontext_t*)context;
*pc = ucontext->uc_mcontext.gregs[REG_RIP];
@ -1764,11 +1765,6 @@ static void GetPcSpBp(void *context, uptr *pc, uptr *sp, uptr *bp) {
*pc = ucontext->uc_mcontext.mc_eip;
*bp = ucontext->uc_mcontext.mc_ebp;
*sp = ucontext->uc_mcontext.mc_esp;
#elif SANITIZER_NETBSD
ucontext_t *ucontext = (ucontext_t *)context;
*pc = ucontext->uc_mcontext.__gregs[_REG_EIP];
*bp = ucontext->uc_mcontext.__gregs[_REG_EBP];
*sp = ucontext->uc_mcontext.__gregs[_REG_ESP];
# else
ucontext_t *ucontext = (ucontext_t*)context;
# if SANITIZER_SOLARIS

10
compiler-rt/lib/ubsan/ubsan_platform.h
View File

@ -14,13 +14,9 @@
#define UBSAN_PLATFORM_H
// Other platforms should be easy to add, and probably work as-is.
#if (defined(__linux__) || defined(__FreeBSD__) || defined(__APPLE__) || \
defined(__NetBSD__)) && \
(defined(__x86_64__) || defined(__i386__) || defined(__arm__) || \
defined(__aarch64__) || defined(__mips__) || defined(__powerpc64__) || \
defined(__s390__)) || (defined(__sun__) && defined(__svr4__))
# define CAN_SANITIZE_UB 1
#elif defined(_WIN32) || defined(__Fuchsia__)
#if defined(__linux__) || defined(__FreeBSD__) || defined(__APPLE__) || \
defined(__NetBSD__) || (defined(__sun__) && defined(__svr4__)) || \
defined(_WIN32) || defined(__Fuchsia__)
# define CAN_SANITIZE_UB 1
#else
# define CAN_SANITIZE_UB 0