gprofng: a new GNU profiler

top-level
	* Makefile.def: Add gprofng module.
	* configure.ac: Add --enable-gprofng option.
	* src-release.sh: Add gprofng.
	* Makefile.in: Regenerate.
	* configure: Regenerate.
	* gprofng: New directory.

binutils
	* MAINTAINERS: Add gprofng maintainer.
	* README-how-to-make-a-release: Add gprofng.

include.
	* collectorAPI.h: New file.
	* libcollector.h: New file.
	* libfcollector.h: New file.

1 files changed, 321 insertions, 0 deletions

diff --git a/gprofng/libcollector/libcol_util.h b/gprofng/libcollector/libcol_util.h
new file mode 100644
index 0000000..4384d47
--- /dev/null
+++ b/gprofng/libcollector/libcol_util.h
@@ -0,0 +1,321 @@
+/* Copyright (C) 2021 Free Software Foundation, Inc.
+   Contributed by Oracle.
+
+   This file is part of GNU Binutils.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3, or (at your option)
+   any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software
+   Foundation, 51 Franklin Street - Fifth Floor, Boston,
+   MA 02110-1301, USA.  */
+
+#ifndef _LIBCOL_UTIL_H
+#define _LIBCOL_UTIL_H
+
+#include <stdarg.h>
+#include <pthread.h>
+#include <signal.h>
+
+// LIBCOLLECTOR NOT I18N
+#define NTXT(x) x
+#define STXT(x) x
+
+extern int __collector_tracelevel;
+
+/* Initialization function */
+extern	int  __collector_util_init();
+extern  void __collector_libkstat_funcs_init();
+extern  void __collector_libscf_funcs_init();
+
+/* -------  functions from libcol_util.c ----------------- */
+extern void * __collector_memcpy (void *s1, const void *s2, size_t n);
+extern int (*__collector_sscanfp)(const char *restrict s, const char *restrict fmt, ...);
+extern char * __collector_strcat (char *s1, const char *s2);
+extern char * __collector_strchr (const char *s1, int chr);
+extern size_t __collector_strlcpy (char *dst, const char *src, size_t dstsize);
+extern char* __collector_strrchr (const char *str, int chr);
+extern size_t __collector_strlen (const char *s);
+extern size_t __collector_strlcat (char *dst, const char *src, size_t dstsize);
+extern char* __collector_strchr (const char *str, int chr);
+extern int __collector_strcmp (const char *s1, const char *s2);
+extern int __collector_strncmp (const char *s1, const char *s2, size_t n);
+extern char * __collector_strstr (const char *s1, const char *s2);
+extern size_t __collector_strncpy (char *dst, const char *src, size_t dstsize);
+extern size_t __collector_strncat (char *dst, const char *src, size_t dstsize);
+extern void * __collector_malloc (size_t size);
+extern void * __collector_calloc (size_t nelem, size_t elsize);
+extern char * __collector_strdup (const char * str);
+extern int __collector_strStartWith (const char *s1, const char *s2);
+extern int __collector_xml_snprintf (char *s, size_t n, const char *format, ...) __attribute__ ((format (printf, 3, 4)));
+extern int __collector_xml_vsnprintf (char *s, size_t n, const char *format, va_list args);
+
+/* -------  collector_thread ----------------- */
+pid_t __collector_gettid ();
+extern void __collector_ext_gettid_tsd_create_key ();
+#define collector_thread_t pthread_t            // not using pid_t, since tid is defined as pthread_t in package structures, and other codes assume this type
+#define statvfs_t  struct statvfs
+#define __collector_lwp_self() (collector_thread_t)__collector_gettid() // not using pthread_self()
+#define __collector_thr_self() (collector_thread_t)__collector_gettid() // not using pthread_self()
+
+/* -------  collector_mutex ----------------- */
+/*
+ * mutex_init is defined in libthread. If we don't want to interact
+ * with libthread we should use memset to initialize mutexes
+ */
+
+typedef volatile int collector_mutex_t;
+#define  COLLECTOR_MUTEX_INITIALIZER 0
+extern int __collector_mutex_lock (collector_mutex_t *mp);
+extern int __collector_mutex_unlock (collector_mutex_t *mp);
+extern int __collector_mutex_trylock (collector_mutex_t *mp);
+
+#define __collector_mutex_init(xx) \
+  do { collector_mutex_t tmp=COLLECTOR_MUTEX_INITIALIZER; *(xx)=tmp; } while(0)
+
+void __collector_sample (char *name);
+void __collector_terminate_expt ();
+void __collector_pause ();
+void __collector_pause_m ();
+void __collector_resume ();
+
+struct DT_lineno;
+
+typedef enum
+{
+  DFUNC_API = 1, /* dynamic function declared with API */
+  DFUNC_JAVA, /* dynamically compiled java method */
+  DFUNC_KERNEL /* dynamic code mapped by the kernel (Linux) */
+} dfunc_mode_t;
+
+extern void __collector_int_func_load (dfunc_mode_t mode, char *name,
+				       char *sourcename, void *vaddr,
+				       int size, int lntsize,
+				       struct DT_lineno *lntable);
+extern void __collector_int_func_unload (dfunc_mode_t mode, void *vaddr);
+
+extern int __collector_sigaction (int sig, const struct sigaction *nact,
+				  struct sigaction *oact);
+extern void __collector_SIGDFL_handler (int sig);
+extern int __collector_ext_itimer_set (int period);
+
+#if ARCH(Intel)
+/* Atomic functions on x86/x64 */
+
+/**
+ * This function enables the inrementing (by one) of the value stored in target
+ * to occur in an atomic manner.
+ */
+static __attribute__ ((always_inline)) inline void
+__collector_inc_32 (uint32_t *ptr)
+{
+  __asm__ __volatile__("lock; incl %0"
+		       : // "=m" (*ptr)    // output
+		       : "m" (*ptr)); // input
+}
+
+/**
+ * This function enables the decrementing (by one) of the value stored in target
+ * to occur in an atomic manner.
+ */
+static __attribute__ ((always_inline)) inline void
+__collector_dec_32 (volatile uint32_t *ptr)
+{
+  __asm__ __volatile__("lock; decl %0"
+		       : // "=m" (*ptr)    // output
+		       : "m" (*ptr)); // input
+}
+/**
+ * This function subtrackts the value "off" of the value stored in target
+ * to occur in an atomic manner, and returns new value stored in target.
+ */
+static __attribute__ ((always_inline)) inline uint32_t
+__collector_subget_32 (uint32_t *ptr, uint32_t off)
+{
+  uint32_t r;
+  uint32_t offset = off;
+  __asm__ __volatile__("movl %2, %0; negl %0; lock; xaddl %0, %1"
+		       : "=r" (r), "=m" (*ptr) /* output */
+		       : "a" (off), "r" (*ptr) /* input */
+		       );
+  return (r - offset);
+}
+/**
+ * This function returns the value of the stack pointer register
+ */
+static __attribute__ ((always_inline)) inline void *
+__collector_getsp ()
+{
+  void *r;
+#if WSIZE(64)
+  __asm__ __volatile__("movq %%rsp, %0"
+#else
+  __asm__ __volatile__("movl %%esp, %0"
+#endif
+	  : "=r" (r)); // output
+  return r;
+}
+/**
+ * This function returns the value of the frame pointer register
+ */
+static __attribute__ ((always_inline)) inline void *
+__collector_getfp ()
+{
+  void *r;
+#if WSIZE(64)
+  __asm__ __volatile__("movq %%rbp, %0"
+#else
+  __asm__ __volatile__("movl %%ebp, %0"
+#endif
+	  : "=r" (r)); // output
+  return r;
+}
+/**
+ * This function returns the value of the processor counter register
+ */
+static __attribute__ ((always_inline)) inline void *
+__collector_getpc ()
+{
+  void *r;
+  __asm__ __volatile__(
+#if WSIZE(32)
+	  "	call  1f \n"
+		       "1: popl  %0 \n"
+#else
+	  "	call  1f \n"
+		       "1: popq  %0 \n"
+#endif
+	  : "=r" (r)); // output
+  return r;
+}
+
+/**
+ * This function enables a compare and swap operation to occur atomically.
+ * The 32-bit value stored in target is compared with "old". If these values
+ * are equal, the value stored in target is replaced with "new". The old
+ * 32-bit value stored in target is returned by the function whether or not
+ * the replacement occurred.
+ */
+static __attribute__ ((always_inline)) inline uint32_t
+__collector_cas_32 (volatile uint32_t *pdata, uint32_t old, uint32_t new)
+{
+  uint32_t r;
+  __asm__ __volatile__("lock; cmpxchgl %2, %1"
+		       : "=a" (r), "=m" (*pdata) : "r" (new),
+		       "a" (old), "m" (*pdata));
+  return r;
+}
+/**
+ * This function enables a compare and swap operation to occur atomically.
+ * The 64-bit value stored in target is compared with "old". If these values
+ * are equal, the value stored in target is replaced with "new". The old
+ * 64-bit value stored in target is returned by the function whether or not
+ * the replacement occurred.
+ */
+static __attribute__ ((always_inline)) inline uint64_t
+__collector_cas_64p (volatile uint64_t *mem, uint64_t *old, uint64_t * new)
+{
+  uint64_t r;
+#if WSIZE(32)
+  uint32_t old1 = (uint32_t) (*old & 0xFFFFFFFFL);
+  uint32_t old2 = (uint32_t) ((*old >> 32) & 0xFFFFFFFFL);
+  uint32_t new1 = (uint32_t) (*new & 0xFFFFFFFFL);
+  uint32_t new2 = (uint32_t) ((*new >> 32) & 0xFFFFFFFFL);
+  uint32_t res1 = 0;
+  uint32_t res2 = 0;
+  __asm__ __volatile__(
+      "movl %3, %%esi; lock; cmpxchg8b (%%esi); movl %%edx, %2; movl %%eax, %1"
+      : "=m" (r), "=m" (res1), "=m" (res2) /* output */
+      : "m" (mem), "a" (old1), "d" (old2), "b" (new1), "c" (new2) /* input */
+      : "memory", "cc", "esi" //, "edx", "ecx", "ebx", "eax" /* clobbered register */
+		       );
+  r = (((uint64_t) res2) << 32) | ((uint64_t) res1);
+#else
+  __asm__ __volatile__( "lock; cmpxchgq %2, %1"
+		       : "=a" (r), "=m" (*mem) /* output */
+		       : "r" (*new), "a" (*old), "m" (*mem) /* input */
+		       : "%rcx", "rdx" /* clobbered register */
+		       );
+#endif
+  return r;
+}
+/**
+ * This function enables a compare and swap operation to occur atomically.
+ * The 32-/64-bit value stored in target is compared with "cmp". If these values
+ * are equal, the value stored in target is replaced with "new".
+ * The old value stored in target is returned by the function whether or not
+ * the replacement occurred.
+ */
+static __attribute__ ((always_inline)) inline void *
+__collector_cas_ptr (void *mem, void *cmp, void *new)
+{
+  void *r;
+#if WSIZE(32)
+  r = (void *) __collector_cas_32 ((volatile uint32_t *)mem, (uint32_t) cmp, (uint32_t)new);
+#else
+  __asm__ __volatile__("lock; cmpxchgq %2, (%1)"
+		       : "=a" (r), "=b" (mem) /* output */
+		       : "r" (new), "a" (cmp), "b" (mem) /* input */
+		       );
+#endif
+  return r;
+}
+
+#elif ARCH(Aarch64)
+static __attribute__ ((always_inline)) inline uint32_t
+__collector_inc_32 (volatile uint32_t *ptr)
+{
+  return __sync_add_and_fetch (ptr, 1);
+}
+
+static __attribute__ ((always_inline)) inline uint32_t
+__collector_dec_32 (volatile uint32_t *ptr)
+{
+  return __sync_sub_and_fetch (ptr, 1);
+}
+
+static __attribute__ ((always_inline)) inline uint32_t
+__collector_subget_32 (volatile uint32_t *ptr, uint32_t off)
+{
+  return __sync_sub_and_fetch (ptr, off);
+}
+
+static __attribute__ ((always_inline)) inline uint32_t
+__collector_cas_32 (volatile uint32_t *ptr, uint32_t old, uint32_t new)
+{
+  return __sync_val_compare_and_swap (ptr, old, new);
+}
+
+static __attribute__ ((always_inline)) inline uint64_t
+__collector_cas_64p (volatile uint64_t *ptr, uint64_t *old, uint64_t * new)
+{
+  return __sync_val_compare_and_swap (ptr, *old, *new);
+}
+
+static __attribute__ ((always_inline)) inline void *
+__collector_cas_ptr (void *ptr, void *old, void *new)
+{
+  return (void *) __sync_val_compare_and_swap ((unsigned long *) ptr, (unsigned long) old, (unsigned long) new);
+}
+
+#else
+extern void __collector_flushw (); /* defined for SPARC only */
+extern void* __collector_getpc ();
+extern void* __collector_getsp ();
+extern void* __collector_getfp ();
+extern void __collector_inc_32 (volatile uint32_t *);
+extern void __collector_dec_32 (volatile uint32_t *);
+extern void* __collector_cas_ptr (volatile void *, void *, void *);
+extern uint32_t __collector_cas_32 (volatile uint32_t *, uint32_t, uint32_t);
+extern uint32_t __collector_subget_32 (volatile uint32_t *, uint32_t);
+extern uint64_t __collector_cas_64p (volatile uint64_t *, uint64_t *, uint64_t *);
+#endif /* ARCH() */
+#endif /* _LIBCOL_UTIL_H */