Initial effort at adding profiling support.

4 files changed, 181 insertions, 0 deletions

diff --git a/libc/sysdeps/linux/sparc/bits/atomicity.h b/libc/sysdeps/linux/sparc/bits/atomicity.h
new file mode 100644
index 000000000..ec82541c2
--- /dev/null
+++ b/libc/sysdeps/linux/sparc/bits/atomicity.h
@@ -0,0 +1,98 @@
+/* Low-level functions for atomic operations.  Sparc32 version.
+   Copyright (C) 1999 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library 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
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, write to the Free
+   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+   02111-1307 USA.  */
+
+#ifndef _ATOMICITY_H
+#define _ATOMICITY_H	1
+
+#include <inttypes.h>
+
+static int
+__attribute__ ((unused))
+exchange_and_add (volatile uint32_t *mem, int val)
+{
+  static unsigned char lock;
+  int result, tmp;
+
+  __asm__ __volatile__("1:	ldstub	[%1], %0\n\t"
+		       "	cmp	%0, 0\n\t"
+		       "	bne	1b\n\t"
+		       "	 nop"
+		       : "=&r" (tmp)
+		       : "r" (&lock)
+		       : "memory");
+  result = *mem;
+  *mem += val;
+  __asm__ __volatile__("stb	%%g0, [%0]"
+		       : /* no outputs */
+		       : "r" (&lock)
+		       : "memory");
+  return result;
+}
+
+static void
+__attribute__ ((unused))
+atomic_add (volatile uint32_t *mem, int val)
+{
+  static unsigned char lock;
+  int tmp;
+
+  __asm__ __volatile__("1:	ldstub	[%1], %0\n\t"
+		       "	cmp	%0, 0\n\t"
+		       "	bne	1b\n\t"
+		       "	 nop"
+		       : "=&r" (tmp)
+		       : "r" (&lock)
+		       : "memory");
+  *mem += val;
+  __asm__ __volatile__("stb	%%g0, [%0]"
+		       : /* no outputs */
+		       : "r" (&lock)
+		       : "memory");
+}
+
+static int
+__attribute__ ((unused))
+compare_and_swap (volatile long int *p, long int oldval, long int newval)
+{
+  static unsigned char lock;
+  int ret, tmp;
+
+  __asm__ __volatile__("1:	ldstub	[%1], %0\n\t"
+		       "	cmp	%0, 0\n\t"
+		       "	bne	1b\n\t"
+		       "	 nop"
+		       : "=&r" (tmp)
+		       : "r" (&lock)
+		       : "memory");
+  if (*p != oldval)
+    ret = 0;
+  else
+    {
+      *p = newval;
+      ret = 1;
+    }
+  __asm__ __volatile__("stb	%%g0, [%0]"
+		       : /* no outputs */
+		       : "r" (&lock)
+		       : "memory");
+
+  return ret;
+}
+
+#endif /* atomicity.h */
diff --git a/libc/sysdeps/linux/sparc/bits/profil-counter.h b/libc/sysdeps/linux/sparc/bits/profil-counter.h
new file mode 100644
index 000000000..1e22e8cce
--- /dev/null
+++ b/libc/sysdeps/linux/sparc/bits/profil-counter.h
@@ -0,0 +1,26 @@
+/* Low-level statistical profiling support function.  Linux/SPARC version.
+   Copyright (C) 1997, 1999 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library 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
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, write to the Free
+   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+   02111-1307 USA.  */
+
+#include <signal.h>
+
+void
+profil_counter (int signo, struct sigcontext *si)
+{
+  profil_count ((void *) si->si_regs.pc);
+}
diff --git a/libc/sysdeps/linux/sparc/bits/sigcontextinfo.h b/libc/sysdeps/linux/sparc/bits/sigcontextinfo.h
new file mode 100644
index 000000000..2c2770d07
--- /dev/null
+++ b/libc/sysdeps/linux/sparc/bits/sigcontextinfo.h
@@ -0,0 +1,29 @@
+/* Copyright (C) 1999, 2000 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Jakub Jelinek <jakub@redhat.com>, 1999.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library 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
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, write to the Free
+   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+   02111-1307 USA.  */
+
+#define SIGCONTEXT struct sigcontext *
+#define SIGCONTEXT_EXTRA_ARGS
+#define GET_PC(__ctx)	((void *) ((__ctx)->si_regs.pc))
+#define ADVANCE_STACK_FRAME(__next) \
+	((void *) (((unsigned *)(__next))+14))
+
+#define GET_STACK(__ctx)	((void *) (__ctx)->si_regs.u_regs[14])
+#define GET_FRAME(__ctx)	ADVANCE_STACK_FRAME (GET_STACK(__ctx))
+#define CALL_SIGHANDLER(handler, signo, ctx) \
+  (handler)((signo), SIGCONTEXT_EXTRA_ARGS (ctx))
diff --git a/libc/sysdeps/linux/sparc/bits/stackinfo.h b/libc/sysdeps/linux/sparc/bits/stackinfo.h
new file mode 100644
index 000000000..fd34e2deb
--- /dev/null
+++ b/libc/sysdeps/linux/sparc/bits/stackinfo.h
@@ -0,0 +1,28 @@
+/* Copyright (C) 2001 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library 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
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, write to the Free
+   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+   02111-1307 USA.  */
+
+/* This file contains a bit of information about the stack allocation
+   of the processor.  */
+
+#ifndef _STACKINFO_H
+#define _STACKINFO_H	1
+
+/* On sparc the stack grows down.  */
+#define _STACK_GROWS_DOWN	1
+
+#endif	/* stackinfo.h */