summaryrefslogtreecommitdiff
diff options
context:
space:
mode:
Diffstat
-rw-r--r--cmake/config-ix.cmake2
-rw-r--r--lib/profile/CMakeLists.txt1
-rw-r--r--lib/profile/GCDAProfiling.c4
-rw-r--r--lib/profile/InstrProfilingFile.c4
-rw-r--r--lib/profile/InstrProfilingMergeFile.c4
-rw-r--r--lib/profile/InstrProfilingPlatformFuchsia.c183
-rw-r--r--lib/profile/InstrProfilingPlatformLinux.c2
7 files changed, 198 insertions, 2 deletions
diff --git a/cmake/config-ix.cmake b/cmake/config-ix.cmake
index 6bad751d7..f3935ffd6 100644
--- a/cmake/config-ix.cmake
+++ b/cmake/config-ix.cmake
@@ -557,7 +557,7 @@ else()
endif()
if (PROFILE_SUPPORTED_ARCH AND NOT LLVM_USE_SANITIZER AND
- OS_NAME MATCHES "Darwin|Linux|FreeBSD|Windows|Android|SunOS")
+ OS_NAME MATCHES "Darwin|Linux|FreeBSD|Windows|Android|Fuchsia|SunOS")
set(COMPILER_RT_HAS_PROFILE TRUE)
else()
set(COMPILER_RT_HAS_PROFILE FALSE)
diff --git a/lib/profile/CMakeLists.txt b/lib/profile/CMakeLists.txt
index 44369b848..488673dd2 100644
--- a/lib/profile/CMakeLists.txt
+++ b/lib/profile/CMakeLists.txt
@@ -59,6 +59,7 @@ set(PROFILE_SOURCES
InstrProfilingNameVar.c
InstrProfilingWriter.c
InstrProfilingPlatformDarwin.c
+ InstrProfilingPlatformFuchsia.c
InstrProfilingPlatformLinux.c
InstrProfilingPlatformOther.c
InstrProfilingRuntime.cc
diff --git a/lib/profile/GCDAProfiling.c b/lib/profile/GCDAProfiling.c
index f5c647c77..cbca36551 100644
--- a/lib/profile/GCDAProfiling.c
+++ b/lib/profile/GCDAProfiling.c
@@ -20,6 +20,8 @@
|*
\*===----------------------------------------------------------------------===*/
+#if !defined(__Fuchsia__)
+
#include <errno.h>
#include <fcntl.h>
#include <stdio.h>
@@ -602,3 +604,5 @@ void llvm_gcov_init(fn_ptr wfn, fn_ptr ffn) {
atexit(llvm_writeout_files);
}
}
+
+#endif
diff --git a/lib/profile/InstrProfilingFile.c b/lib/profile/InstrProfilingFile.c
index 68ba923fd..c4cf3ccd7 100644
--- a/lib/profile/InstrProfilingFile.c
+++ b/lib/profile/InstrProfilingFile.c
@@ -7,6 +7,8 @@
|*
\*===----------------------------------------------------------------------===*/
+#if !defined(__Fuchsia__)
+
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
@@ -661,3 +663,5 @@ int __llvm_profile_register_write_file_atexit(void) {
HasBeenRegistered = 1;
return atexit(writeFileWithoutReturn);
}
+
+#endif
diff --git a/lib/profile/InstrProfilingMergeFile.c b/lib/profile/InstrProfilingMergeFile.c
index b41f216c3..dc1bc9762 100644
--- a/lib/profile/InstrProfilingMergeFile.c
+++ b/lib/profile/InstrProfilingMergeFile.c
@@ -10,6 +10,8 @@
|* stored in files.
\*===----------------------------------------------------------------------===*/
+#if !defined(__Fuchsia__)
+
#include "InstrProfiling.h"
#include "InstrProfilingInternal.h"
#include "InstrProfilingUtil.h"
@@ -39,3 +41,5 @@ void lprofMergeValueProfData(ValueProfData *SrcValueProfData,
VR = getValueProfRecordNext(VR);
}
}
+
+#endif
diff --git a/lib/profile/InstrProfilingPlatformFuchsia.c b/lib/profile/InstrProfilingPlatformFuchsia.c
new file mode 100644
index 000000000..a50602ded
--- /dev/null
+++ b/lib/profile/InstrProfilingPlatformFuchsia.c
@@ -0,0 +1,183 @@
+/*===- InstrProfilingPlatformFuchsia.c - Profile data Fuchsia platform ----===*\
+|*
+|* The LLVM Compiler Infrastructure
+|*
+|* This file is distributed under the University of Illinois Open Source
+|* License. See LICENSE.TXT for details.
+|*
+\*===----------------------------------------------------------------------===*/
+/*
+ * This file implements the profiling runtime for Fuchsia and defines the
+ * shared profile runtime interface. Each module (executable or DSO) statically
+ * links in the whole profile runtime to satisfy the calls from its
+ * instrumented code. Several modules in the same program might be separately
+ * compiled and even use different versions of the instrumentation ABI and data
+ * format. All they share in common is the VMO and the offset, which live in
+ * exported globals so that exactly one definition will be shared across all
+ * modules. Each module has its own independent runtime that registers its own
+ * atexit hook to append its own data into the shared VMO which is published
+ * via the data sink hook provided by Fuchsia's dynamic linker.
+ */
+
+#if defined(__Fuchsia__)
+
+#include <inttypes.h>
+#include <stdarg.h>
+#include <stdbool.h>
+#include <stdlib.h>
+
+#include <zircon/process.h>
+#include <zircon/sanitizer.h>
+#include <zircon/syscalls.h>
+
+#include "InstrProfiling.h"
+#include "InstrProfilingInternal.h"
+#include "InstrProfilingUtil.h"
+
+/* VMO that contains the coverage data shared across all modules. This symbol
+ * has default visibility and is exported in each module (executable or DSO)
+ * that statically links in the profiling runtime.
+ */
+zx_handle_t __llvm_profile_vmo;
+/* Current offset within the VMO where data should be written next. This symbol
+ * has default visibility and is exported in each module (executable or DSO)
+ * that statically links in the profiling runtime.
+ */
+uint64_t __llvm_profile_offset;
+
+static const char ProfileSinkName[] = "llvm-profile";
+
+static inline void lprofWrite(const char *fmt, ...) {
+ char s[256];
+
+ va_list ap;
+ va_start(ap, fmt);
+ int ret = vsnprintf(s, sizeof(s), fmt, ap);
+ va_end(ap);
+
+ __sanitizer_log_write(s, ret + 1);
+}
+
+static uint32_t lprofVMOWriter(ProfDataWriter *This, ProfDataIOVec *IOVecs,
+ uint32_t NumIOVecs) {
+ /* Allocate VMO if it hasn't been created yet. */
+ if (__llvm_profile_vmo == ZX_HANDLE_INVALID) {
+ /* Get information about the current process. */
+ zx_info_handle_basic_t Info;
+ zx_status_t Status =
+ _zx_object_get_info(_zx_process_self(), ZX_INFO_HANDLE_BASIC, &Info,
+ sizeof(Info), NULL, NULL);
+ if (Status != ZX_OK)
+ return -1;
+
+ /* Create VMO to hold the profile data. */
+ Status = _zx_vmo_create(0, 0, &__llvm_profile_vmo);
+ if (Status != ZX_OK)
+ return -1;
+
+ /* Give the VMO a name including our process KOID so it's easy to spot. */
+ char VmoName[ZX_MAX_NAME_LEN];
+ snprintf(VmoName, sizeof(VmoName), "%s.%" PRIu64, ProfileSinkName,
+ Info.koid);
+ _zx_object_set_property(__llvm_profile_vmo, ZX_PROP_NAME, VmoName,
+ strlen(VmoName));
+
+ /* Duplicate the handle since __sanitizer_publish_data consumes it. */
+ zx_handle_t Handle;
+ Status =
+ _zx_handle_duplicate(__llvm_profile_vmo, ZX_RIGHT_SAME_RIGHTS, &Handle);
+ if (Status != ZX_OK)
+ return -1;
+
+ /* Publish the VMO which contains profile data to the system. */
+ __sanitizer_publish_data(ProfileSinkName, Handle);
+
+ /* Use the dumpfile symbolizer markup element to write the name of VMO. */
+ lprofWrite("LLVM Profile: {{{dumpfile:%s:%s}}}\n",
+ ProfileSinkName, VmoName);
+ }
+
+ /* Compute the total length of data to be written. */
+ size_t Length = 0;
+ for (uint32_t I = 0; I < NumIOVecs; I++)
+ Length += IOVecs[I].ElmSize * IOVecs[I].NumElm;
+
+ /* Resize the VMO to ensure there's sufficient space for the data. */
+ zx_status_t Status =
+ _zx_vmo_set_size(__llvm_profile_vmo, __llvm_profile_offset + Length);
+ if (Status != ZX_OK)
+ return -1;
+
+ /* Copy the data into VMO. */
+ for (uint32_t I = 0; I < NumIOVecs; I++) {
+ size_t Length = IOVecs[I].ElmSize * IOVecs[I].NumElm;
+ if (IOVecs[I].Data) {
+ Status = _zx_vmo_write(__llvm_profile_vmo, IOVecs[I].Data,
+ __llvm_profile_offset, Length);
+ if (Status != ZX_OK)
+ return -1;
+ }
+ __llvm_profile_offset += Length;
+ }
+
+ return 0;
+}
+
+static void initVMOWriter(ProfDataWriter *This) {
+ This->Write = lprofVMOWriter;
+ This->WriterCtx = NULL;
+}
+
+static int dump(void) {
+ if (lprofProfileDumped()) {
+ lprofWrite("Profile data not published: already written.\n");
+ return 0;
+ }
+
+ /* Check if there is llvm/runtime version mismatch. */
+ if (GET_VERSION(__llvm_profile_get_version()) != INSTR_PROF_RAW_VERSION) {
+ lprofWrite("Runtime and instrumentation version mismatch : "
+ "expected %d, but got %d\n",
+ INSTR_PROF_RAW_VERSION,
+ (int)GET_VERSION(__llvm_profile_get_version()));
+ return -1;
+ }
+
+ /* Write the profile data into the mapped region. */
+ ProfDataWriter VMOWriter;
+ initVMOWriter(&VMOWriter);
+ if (lprofWriteData(&VMOWriter, lprofGetVPDataReader(), 0) != 0)
+ return -1;
+
+ return 0;
+}
+
+COMPILER_RT_VISIBILITY
+int __llvm_profile_dump(void) {
+ int rc = dump();
+ lprofSetProfileDumped();
+ return rc;
+}
+
+static void dumpWithoutReturn(void) { dump(); }
+
+/* This method is invoked by the runtime initialization hook
+ * InstrProfilingRuntime.o if it is linked in.
+ */
+COMPILER_RT_VISIBILITY
+void __llvm_profile_initialize_file(void) {}
+
+COMPILER_RT_VISIBILITY
+int __llvm_profile_register_write_file_atexit(void) {
+ static bool HasBeenRegistered = false;
+
+ if (HasBeenRegistered)
+ return 0;
+
+ lprofSetupValueProfiler();
+
+ HasBeenRegistered = true;
+ return atexit(dumpWithoutReturn);
+}
+
+#endif
diff --git a/lib/profile/InstrProfilingPlatformLinux.c b/lib/profile/InstrProfilingPlatformLinux.c
index 89f1ab4cf..a517821a2 100644
--- a/lib/profile/InstrProfilingPlatformLinux.c
+++ b/lib/profile/InstrProfilingPlatformLinux.c
@@ -7,7 +7,7 @@
|*
\*===----------------------------------------------------------------------===*/
-#if defined(__linux__) || defined(__FreeBSD__) || \
+#if defined(__linux__) || defined(__FreeBSD__) || defined(__Fuchsia__) || \
(defined(__sun__) && defined(__svr4__))
#include <stdlib.h>
generated by cgit v1.2.3 (git 2.25.1) at 2024-05-02 13:42:05 +0000