[RISCV][ASAN] mark asan as supported for RISCV and enable tests

[EccoTheDolphin]

Summary

Port address sanitizer to RISCV architecture

This change allows using ASAN on RISCV architecture. The majority of existing
tests are passing. With few exceptions (see below). Tests we run on qemu and
on "HiFive Unleashed" board.

Tests run:

Asan-riscv64-inline-Test  - pass
Asan-riscv64-inline-Noinst-Test  - pass
Asan-riscv64-calls-Noinst-Test  - pass
Asan-riscv64-calls-Test  - pass

Lit tests:

RISCV64LinuxConfig (282 supported, few failures)
RISCV64LinuxDynamicConfig (289 supported, few failures)

Lit failures:

asan_and_llvm_coverage_test.cpp - missing libclang_rt.profile-riscv64.a
deep_stack_uaf.cpp - asan works, but backtrace misses some calls
malloc_context_size.cpp - asan works, but backtrace misses some calls
malloc_delete_mismatch.cpp - asan works, but backtrace misses some calls
plugin_wrong_frame_number_bug.cpp - asan works, but backtrace misses some calls
stack-trace-dlclose.cpp - asan works, but backtrace misses some calls
strndup_oob_test.cpp - asan works, but backtrace misses some calls
static_tls.cpp - "Can't guess glibc version" (under debugging)

These failures are under debugging currently and shall be addressed in a
subsequent commits

[EccoTheDolphin]

uploaded the patch by mistake. Will try to re-upload in a proper way once I figure out how to use the arc tool properly.

[EccoTheDolphin]

Port addres sanititizers to RISCV architecture

This change allows using ASAN on RISCV architecture. The majoirity of existing
tests are passing. With few exceptions (see below). Tests we run on qemu and
on "HiFive Unleashed" board.

Tests run:

Asan-riscv64-inline-Test  - pass
Asan-riscv64-inline-Noinst-Test  - pass
Asan-riscv64-calls-Noinst-Test  - pass
Asan-riscv64-calls-Test  - pass

Lit tests:

RISCV64LinuxConfig (282 supported, few failures)
RISCV64LinuxDynamicConfig (289 supported, few failures)

Lit failures:

asan_and_llvm_coverage_test.cpp - missing libclang_rt.profile-riscv64.a
deep_stack_uaf.cpp - asan works, but backtrace misses some calls
malloc_context_size.cpp - asan works, but backtrace misses some calls
malloc_delete_mismatch.cpp - asan works, but backtrace misses some calls
plugin_wrong_frame_number_bug.cpp - asan works, but backtrace misses some calls
stack-trace-dlclose.cpp - asan works, but backtrace misses some calls
strndup_oob_test.cpp - asan works, but backtrace misses some calls
static_tls.cpp - "Can't guess glibc version" (under debugging)

These failures are under debuggng currently and shall be addressed in a
subsequent commits

[EccoTheDolphin]

[RISCV][ASAN] implementation of internal syscalls wrappers for riscv

[1/11] of commits implementing asan port of RISCV

[EccoTheDolphin]

restore combined diff

[EccoTheDolphin]

restore combined diff

[EccoTheDolphin]

fixup some formatting issues

[EccoTheDolphin]

this huge change is abandoned in favor of a more digestible https://reviews.llvm.org/D87582

compiler-rt/cmake/config-ix.cmake

 if(APPLE)
   set(ARM64 arm64)
   set(ARM32 armv7 armv7s armv7k)
   set(X86_64 x86_64 x86_64h)
 endif()
 
 set(ALL_SANITIZER_COMMON_SUPPORTED_ARCH ${X86} ${X86_64} ${PPC64} ${RISCV64}
     ${ARM32} ${ARM64} ${MIPS32} ${MIPS64} ${S390X} ${SPARC} ${SPARCV9})
-set(ALL_ASAN_SUPPORTED_ARCH ${X86} ${X86_64} ${ARM32} ${ARM64}
+set(ALL_ASAN_SUPPORTED_ARCH ${X86} ${X86_64} ${ARM32} ${ARM64} ${RISCV64}
     ${MIPS32} ${MIPS64} ${PPC64} ${S390X} ${SPARC} ${SPARCV9})
 set(ALL_CRT_SUPPORTED_ARCH ${X86} ${X86_64} ${ARM32} ${ARM64} ${RISCV32} ${RISCV64})
 set(ALL_DFSAN_SUPPORTED_ARCH ${X86_64} ${MIPS64} ${ARM64})
 
 if(ANDROID)
   set(OS_NAME "Android")
 else()
   set(OS_NAME "${CMAKE_SYSTEM_NAME}")

compiler-rt/lib/asan/scripts/asan_symbolize.py

if fix_filename_patterns:
     for path_to_cut in fix_filename_patterns:
       file_name = re.sub('.*' + path_to_cut, '', file_name)
   file_name = re.sub('.*asan_[a-z_]*.(cc|cpp):[0-9]*', '_asan_rtl_', file_name)
   file_name = re.sub('.*crtstuff.c:0', '???:0', file_name)
   return file_name
 
 def is_valid_arch(s):
   return s in ["i386", "x86_64", "x86_64h", "arm", "armv6", "armv7", "armv7s",
-               "armv7k", "arm64", "powerpc64", "powerpc64le", "s390x", "s390"]
+               "armv7k", "arm64", "powerpc64", "powerpc64le", "s390x", "s390",
+               "riscv64"]
 
 def guess_arch(addr):
   # Guess which arch we're running. 10 = len('0x') + 8 hex digits.
   if len(addr) > 10:
     return 'x86_64'
   else:
     return 'i386'
 

compiler-rt/lib/sanitizer_common/tests/CMakeLists.txt

 include(CompilerRTCompile)
 
 clang_compiler_add_cxx_check()
 
 # FIXME: use SANITIZER_COMMON_SUPPORTED_ARCH here
-filter_available_targets(SANITIZER_UNITTEST_SUPPORTED_ARCH x86_64 i386 mips64 mips64el)
+filter_available_targets(SANITIZER_UNITTEST_SUPPORTED_ARCH x86_64 i386 mips64 mips64el riscv64)
 if(APPLE)
   darwin_filter_host_archs(SANITIZER_UNITTEST_SUPPORTED_ARCH SANITIZER_UNITTEST_SUPPORTED_ARCH)
 endif()
 
 set(SANITIZER_UNITTESTS
   sanitizer_allocator_test.cpp
   sanitizer_atomic_test.cpp
   sanitizer_bitvector_test.cpp

compiler-rt/test/asan/CMakeLists.txt

 set(ASAN_LIT_SOURCE_DIR ${CMAKE_CURRENT_SOURCE_DIR})
 
 set(ASAN_TESTSUITES)
 set(ASAN_DYNAMIC_TESTSUITES)
 
 # Before Windows 8 (CMAKE_SYSTEM_VERSION 6.2), reserving large regions of shadow
 # memory allocated physical memory for page tables, which made it very
 # unreliable. Remove the asan tests from check-all in this configuration.
 set(SHADOW_MAPPING_UNRELIABLE FALSE)
 if(OS_NAME MATCHES "Windows" AND CMAKE_SIZEOF_VOID_P EQUAL 8 AND
     CMAKE_SYSTEM_VERSION LESS 6.2)
   set(SHADOW_MAPPING_UNRELIABLE TRUE)
   message(WARNING "Disabling ASan tests because they are unreliable on Windows 7 and earlier")
 endif()
 
 macro(get_bits_for_arch arch bits)
-  if (${arch} MATCHES "x86_64|powerpc64|powerpc64le|aarch64|arm64|mips64|mips64el|s390x|sparcv9")
+  if (${arch} MATCHES "x86_64|powerpc64|powerpc64le|aarch64|arm64|mips64|mips64el|s390x|sparcv9|riscv64")
     set(${bits} 64)
   elseif (${arch} MATCHES "i386|arm|mips|mipsel|sparc")
     set(${bits} 32)
   else()
     message(FATAL_ERROR "Unknown target architecture: ${arch}")
   endif()
 endmacro()
 

compiler-rt/test/asan/TestCases/Linux/ptrace.cpp

 #define __PTRACE_FPREQUEST PTRACE_GETVFPREGS
 
 #elif defined(__s390__)
 typedef _user_regs_struct   regs_struct;
 typedef _user_fpregs_struct fpregs_struct;
 #define PRINT_REG_PC(__regs)    printf ("%lx\n", (unsigned long) (__regs.psw.addr))
 #define PRINT_REG_FP(__fpregs)  printf ("%lx\n", (unsigned long) (__fpregs.fpc))
 #define ARCH_IOVEC_FOR_GETREGSET
+
+#elif defined(__riscv) && (__riscv_xlen == 64)
+#include <asm/ptrace.h>
+typedef user_regs_struct regs_struct;
+typedef __riscv_q_ext_state fpregs_struct;
+#define PRINT_REG_PC(__regs) printf("%lx\n", (unsigned long)(__regs.pc))
+#define PRINT_REG_FP(__fpregs) printf("%lx\n", (unsigned long)(__fpregs.fcsr))
+#define ARCH_IOVEC_FOR_GETREGSET
 #endif
 
 
 int main(void) {
   pid_t pid;
   pid = fork();
   if (pid == 0) { // child
     ptrace(PTRACE_TRACEME, 0, NULL, NULL);

compiler-rt/test/asan/TestCases/Linux/vfork.cpp

 // https://github.com/google/sanitizers/issues/925
 // RUN: %clang_asan -O0 %s -o %t && %run %t 2>&1
 
-// REQUIRES: aarch64-target-arch || x86_64-target-arch || i386-target-arch || arm-target-arch
+// REQUIRES: aarch64-target-arch || x86_64-target-arch || i386-target-arch || arm-target-arch || riscv64-target-arch
 
 #include <assert.h>
 #include <sys/types.h>
 #include <sys/wait.h>
 #include <unistd.h>
 #include <stdio.h>
 #include <sanitizer/asan_interface.h>