[sanitizer] Add hexagon support to sanitizer-common

androm3da · androm3da · commit 9ea59e1cd04f · 2021-08-17T19:59:24.000-07:00
Adds build support for hexagon linux to sanitizer common.
diff --git a/compiler-rt/cmake/Modules/AllSupportedArchDefs.cmake b/compiler-rt/cmake/Modules/AllSupportedArchDefs.cmake
@@ -23,7 +23,8 @@ if(APPLE)
 endif()
 
 set(ALL_SANITIZER_COMMON_SUPPORTED_ARCH ${X86} ${X86_64} ${PPC64} ${RISCV64}
-    ${ARM32} ${ARM64} ${MIPS32} ${MIPS64} ${S390X} ${SPARC} ${SPARCV9})
+    ${ARM32} ${ARM64} ${MIPS32} ${MIPS64} ${S390X} ${SPARC} ${SPARCV9}
+    ${HEXAGON})
 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} ${PPC32} ${PPC64} ${RISCV32} ${RISCV64} ${VE})
diff --git a/compiler-rt/lib/sanitizer_common/sanitizer_common.h b/compiler-rt/lib/sanitizer_common/sanitizer_common.h
@@ -697,7 +697,8 @@ enum ModuleArch {
   kModuleArchARMV7S,
   kModuleArchARMV7K,
   kModuleArchARM64,
-  kModuleArchRISCV64
+  kModuleArchRISCV64,
+  kModuleArchHexagon
 };
 
 // Sorts and removes duplicates from the container.
@@ -764,6 +765,8 @@ inline const char *ModuleArchToString(ModuleArch arch) {
       return "arm64";
     case kModuleArchRISCV64:
       return "riscv64";
+    case kModuleArchHexagon:
+      return "hexagon";
   }
   CHECK(0 && "Invalid module arch");
   return "";
diff --git a/compiler-rt/lib/sanitizer_common/sanitizer_internal_defs.h b/compiler-rt/lib/sanitizer_common/sanitizer_internal_defs.h
@@ -177,10 +177,9 @@ typedef long pid_t;
 typedef int pid_t;
 #endif
 
-#if SANITIZER_FREEBSD || SANITIZER_NETBSD || \
-    SANITIZER_MAC || \
+#if SANITIZER_FREEBSD || SANITIZER_NETBSD || SANITIZER_MAC ||             \
     (SANITIZER_SOLARIS && (defined(_LP64) || _FILE_OFFSET_BITS == 64)) || \
-    (SANITIZER_LINUX && defined(__x86_64__))
+    (SANITIZER_LINUX && (defined(__x86_64__) || defined(__hexagon__)))
 typedef u64 OFF_T;
 #else
 typedef uptr OFF_T;
diff --git a/compiler-rt/lib/sanitizer_common/sanitizer_linux.cpp b/compiler-rt/lib/sanitizer_common/sanitizer_linux.cpp
@@ -158,9 +158,11 @@ namespace __sanitizer {
 #include "sanitizer_syscall_linux_aarch64.inc"
 #elif SANITIZER_LINUX && defined(__arm__)
 #include "sanitizer_syscall_linux_arm.inc"
-#else
-#include "sanitizer_syscall_generic.inc"
-#endif
+#  elif SANITIZER_LINUX && defined(__hexagon__)
+#    include "sanitizer_syscall_linux_hexagon.inc"
+#  else
+#    include "sanitizer_syscall_generic.inc"
+#  endif
 
 // --------------- sanitizer_libc.h
 #if !SANITIZER_SOLARIS && !SANITIZER_NETBSD
@@ -2097,9 +2099,14 @@ static void GetPcSpBp(void *context, uptr *pc, uptr *sp, uptr *bp) {
   *pc = ucontext->uc_mcontext.__gregs[REG_PC];
   *bp = ucontext->uc_mcontext.__gregs[REG_S0];
   *sp = ucontext->uc_mcontext.__gregs[REG_SP];
-#else
-# error "Unsupported arch"
-#endif
+#  elif defined(__hexagon__)
+  ucontext_t *ucontext = (ucontext_t *)context;
+  *pc = ucontext->uc_mcontext.pc;
+  *bp = ucontext->uc_mcontext.r30;
+  *sp = ucontext->uc_mcontext.r29;
+#  else
+#    error "Unsupported arch"
+#  endif
 }
 
 void SignalContext::InitPcSpBp() { GetPcSpBp(context, &pc, &sp, &bp); }
diff --git a/compiler-rt/lib/sanitizer_common/sanitizer_platform.h b/compiler-rt/lib/sanitizer_common/sanitizer_platform.h
@@ -281,11 +281,12 @@
 // mandated by the upstream linux community for all new ports. Other ports
 // may still use legacy syscalls.
 #ifndef SANITIZER_USES_CANONICAL_LINUX_SYSCALLS
-# if (defined(__aarch64__) || defined(__riscv)) && SANITIZER_LINUX
-# define SANITIZER_USES_CANONICAL_LINUX_SYSCALLS 1
-# else
-# define SANITIZER_USES_CANONICAL_LINUX_SYSCALLS 0
-# endif
+#  if (defined(__aarch64__) || defined(__riscv) || defined(__hexagon__)) && \
+      SANITIZER_LINUX
+#    define SANITIZER_USES_CANONICAL_LINUX_SYSCALLS 1
+#  else
+#    define SANITIZER_USES_CANONICAL_LINUX_SYSCALLS 0
+#  endif
 #endif
 
 // udi16 syscalls can only be used when the following conditions are
diff --git a/compiler-rt/lib/sanitizer_common/sanitizer_platform_limits_linux.cpp b/compiler-rt/lib/sanitizer_common/sanitizer_platform_limits_linux.cpp
@@ -28,32 +28,32 @@
 // are not defined anywhere in userspace headers. Fake them. This seems to work
 // fine with newer headers, too.
 #include <linux/posix_types.h>
-#if defined(__x86_64__) ||  defined(__mips__)
-#include <sys/stat.h>
-#else
-#define ino_t __kernel_ino_t
-#define mode_t __kernel_mode_t
-#define nlink_t __kernel_nlink_t
-#define uid_t __kernel_uid_t
-#define gid_t __kernel_gid_t
-#define off_t __kernel_off_t
-#define time_t __kernel_time_t
+#  if defined(__x86_64__) || defined(__mips__) || defined(__hexagon__)
+#    include <sys/stat.h>
+#  else
+#    define ino_t __kernel_ino_t
+#    define mode_t __kernel_mode_t
+#    define nlink_t __kernel_nlink_t
+#    define uid_t __kernel_uid_t
+#    define gid_t __kernel_gid_t
+#    define off_t __kernel_off_t
+#    define time_t __kernel_time_t
 // This header seems to contain the definitions of _kernel_ stat* structs.
-#include <asm/stat.h>
-#undef ino_t
-#undef mode_t
-#undef nlink_t
-#undef uid_t
-#undef gid_t
-#undef off_t
-#endif
-
-#include <linux/aio_abi.h>
-
-#if !SANITIZER_ANDROID
-#include <sys/statfs.h>
-#include <linux/perf_event.h>
-#endif
+#    include <asm/stat.h>
+#    undef ino_t
+#    undef mode_t
+#    undef nlink_t
+#    undef uid_t
+#    undef gid_t
+#    undef off_t
+#  endif
+
+#  include <linux/aio_abi.h>
+
+#  if !SANITIZER_ANDROID
+#    include <sys/statfs.h>
+#    include <linux/perf_event.h>
+#  endif
 
 using namespace __sanitizer;
 
@@ -63,9 +63,9 @@ namespace __sanitizer {
 #endif
 }  // namespace __sanitizer
 
-#if !defined(__powerpc64__) && !defined(__x86_64__) && !defined(__aarch64__)\
-                            && !defined(__mips__) && !defined(__s390__)\
-                            && !defined(__sparc__) && !defined(__riscv)
+#  if !defined(__powerpc64__) && !defined(__x86_64__) &&                   \
+      !defined(__aarch64__) && !defined(__mips__) && !defined(__s390__) && \
+      !defined(__sparc__) && !defined(__riscv) && !defined(__hexagon__)
 COMPILER_CHECK(struct___old_kernel_stat_sz == sizeof(struct __old_kernel_stat));
 #endif
 
diff --git a/compiler-rt/lib/sanitizer_common/sanitizer_platform_limits_posix.cpp b/compiler-rt/lib/sanitizer_common/sanitizer_platform_limits_posix.cpp
@@ -91,10 +91,10 @@
 #if SANITIZER_LINUX
 # include <utime.h>
 # include <sys/ptrace.h>
-#if defined(__mips64) || defined(__aarch64__) || defined(__arm__) || \
-    SANITIZER_RISCV64
-#  include <asm/ptrace.h>
-#  ifdef __arm__
+#    if defined(__mips64) || defined(__aarch64__) || defined(__arm__) || \
+        defined(__hexagon__) || SANITIZER_RISCV64
+#      include <asm/ptrace.h>
+#      ifdef __arm__
 typedef struct user_fpregs elf_fpregset_t;
 #   define ARM_VFPREGS_SIZE_ASAN (32 * 8 /*fpregs*/ + 4 /*fpscr*/)
 #   if !defined(ARM_VFPREGS_SIZE)
@@ -242,12 +242,13 @@ namespace __sanitizer {
     defined(__powerpc64__) || defined(__arch64__) || defined(__sparcv9) || \
     defined(__x86_64__) || SANITIZER_RISCV64
 #define SIZEOF_STRUCT_USTAT 32
-#elif defined(__arm__) || defined(__i386__) || defined(__mips__) \
-  || defined(__powerpc__) || defined(__s390__) || defined(__sparc__)
-#define SIZEOF_STRUCT_USTAT 20
-#else
-#error Unknown size of struct ustat
-#endif
+#    elif defined(__arm__) || defined(__i386__) || defined(__mips__) ||    \
+        defined(__powerpc__) || defined(__s390__) || defined(__sparc__) || \
+        defined(__hexagon__)
+#      define SIZEOF_STRUCT_USTAT 20
+#    else
+#      error Unknown size of struct ustat
+#    endif
   unsigned struct_ustat_sz = SIZEOF_STRUCT_USTAT;
   unsigned struct_rlimit64_sz = sizeof(struct rlimit64);
   unsigned struct_statvfs64_sz = sizeof(struct statvfs64);
diff --git a/compiler-rt/lib/sanitizer_common/sanitizer_platform_limits_posix.h b/compiler-rt/lib/sanitizer_common/sanitizer_platform_limits_posix.h
@@ -102,7 +102,10 @@ const unsigned struct_kernel_stat64_sz = 104;
 #elif SANITIZER_RISCV64
 const unsigned struct_kernel_stat_sz = 128;
 const unsigned struct_kernel_stat64_sz = 0;  // RISCV64 does not use stat64
-#endif
+#    elif defined(__hexagon__)
+const unsigned struct_kernel_stat_sz = 128;
+const unsigned struct_kernel_stat64_sz = 0;
+#    endif
 struct __sanitizer_perf_event_attr {
   unsigned type;
   unsigned size;
@@ -367,7 +370,7 @@ struct __sanitizer_group {
   char **gr_mem;
 };
 
-#if defined(__x86_64__) && !defined(_LP64)
+#  if (defined(__x86_64__) && !defined(_LP64)) || defined(__hexagon__)
 typedef long long __sanitizer_time_t;
 #else
 typedef long __sanitizer_time_t;
@@ -475,23 +478,23 @@ struct __sanitizer_dirent {
   unsigned short d_reclen;
   // more fields that we don't care about
 };
-#elif SANITIZER_ANDROID || defined(__x86_64__)
+#  elif SANITIZER_ANDROID || defined(__x86_64__) || defined(__hexagon__)
 struct __sanitizer_dirent {
   unsigned long long d_ino;
   unsigned long long d_off;
   unsigned short d_reclen;
   // more fields that we don't care about
 };
-#else
+#  else
 struct __sanitizer_dirent {
   uptr d_ino;
   uptr d_off;
   unsigned short d_reclen;
   // more fields that we don't care about
 };
-#endif
+#  endif
 
-#if SANITIZER_LINUX && !SANITIZER_ANDROID
+#  if SANITIZER_LINUX && !SANITIZER_ANDROID
 struct __sanitizer_dirent64 {
   unsigned long long d_ino;
   unsigned long long d_off;
@@ -511,8 +514,8 @@ typedef int __sanitizer_clockid_t;
 #endif
 
 #if SANITIZER_LINUX
-#if defined(_LP64) || defined(__x86_64__) || defined(__powerpc__) || \
-    defined(__mips__)
+#    if defined(_LP64) || defined(__x86_64__) || defined(__powerpc__) || \
+        defined(__mips__) || defined(__hexagon__)
 typedef unsigned __sanitizer___kernel_uid_t;
 typedef unsigned __sanitizer___kernel_gid_t;
 #else
diff --git a/compiler-rt/lib/sanitizer_common/sanitizer_stacktrace.cpp b/compiler-rt/lib/sanitizer_common/sanitizer_stacktrace.cpp
@@ -22,7 +22,8 @@ namespace __sanitizer {
 uptr StackTrace::GetNextInstructionPc(uptr pc) {
 #if defined(__sparc__) || defined(__mips__)
   return pc + 8;
-#elif defined(__powerpc__) || defined(__arm__) || defined(__aarch64__)
+#elif defined(__powerpc__) || defined(__arm__) || defined(__aarch64__) || \
+    defined(__hexagon__)
   return pc + 4;
 #elif SANITIZER_RISCV64
   // Current check order is 4 -> 2 -> 6 -> 8
diff --git a/compiler-rt/lib/sanitizer_common/sanitizer_syscall_linux_hexagon.inc b/compiler-rt/lib/sanitizer_common/sanitizer_syscall_linux_hexagon.inc
