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authorEric Andersen <andersen@codepoet.org>2003-03-03 20:58:42 +0000
committerEric Andersen <andersen@codepoet.org>2003-03-03 20:58:42 +0000
commit67eff66438688fddebe41f77fd252a3b2b135271 (patch)
tree18dbee3e9afe50d27095140198e2aa34df1de061 /libc/sysdeps/linux/sparc
parent2229d0fa131387b9b8ad16ac88347350a080aeb5 (diff)
Initial effort at adding profiling support.
Diffstat (limited to 'libc/sysdeps/linux/sparc')
-rw-r--r--libc/sysdeps/linux/sparc/bits/atomicity.h98
-rw-r--r--libc/sysdeps/linux/sparc/bits/profil-counter.h26
-rw-r--r--libc/sysdeps/linux/sparc/bits/sigcontextinfo.h29
-rw-r--r--libc/sysdeps/linux/sparc/bits/stackinfo.h28
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 */