add jmpbuf-offsets.h and jmpbuf-unwind.h for all archs (LT related)

Signed-off-by: Peter S. Mazinger <ps.m@gmx.net>
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>

2 files changed, 53 insertions, 0 deletions

diff --git a/libc/sysdeps/linux/powerpc/jmpbuf-offsets.h b/libc/sysdeps/linux/powerpc/jmpbuf-offsets.h
new file mode 100644
index 000000000..1b9f766b0
--- /dev/null
+++ b/libc/sysdeps/linux/powerpc/jmpbuf-offsets.h
@@ -0,0 +1,41 @@
+/* Private macros for accessing __jmp_buf contents.  PowerPC version.
+   Copyright (C) 2006 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 <bits/wordsize.h>
+
+#define JB_GPR1   0  /* Also known as the stack pointer */
+#define JB_GPR2   1
+#define JB_LR     2  /* The address we will return to */
+#if __WORDSIZE == 64
+# define JB_GPRS   3  /* GPRs 14 through 31 are saved, 18*2 words total.  */
+# define JB_CR     21 /* Condition code registers with the VRSAVE at */
+                       /* offset 172 (low half of the double word.  */
+# define JB_FPRS   22 /* FPRs 14 through 31 are saved, 18*2 words total.  */
+# define JB_SIZE   (64 * 8) /* As per PPC64-VMX ABI.  */
+# define JB_VRSAVE 21 /* VRSAVE shares a double word with the CR at offset */
+                       /* 168 (high half of the double word).  */
+# define JB_VRS    40 /* VRs 20 through 31 are saved, 12*4 words total.  */
+#else
+# define JB_GPRS   3  /* GPRs 14 through 31 are saved, 18 in total.  */
+# define JB_CR     21 /* Condition code registers.  */
+# define JB_FPRS   22 /* FPRs 14 through 31 are saved, 18*2 words total.  */
+# define JB_SIZE   ((64 + (12 * 4)) * 4)
+# define JB_VRSAVE 62
+# define JB_VRS    64
+#endif
diff --git a/libc/sysdeps/linux/powerpc/jmpbuf-unwind.h b/libc/sysdeps/linux/powerpc/jmpbuf-unwind.h
new file mode 100644
index 000000000..c6f56042a
--- /dev/null
+++ b/libc/sysdeps/linux/powerpc/jmpbuf-unwind.h
@@ -0,0 +1,12 @@
+/*
+ * Copyright (C) 2000-2006 Erik Andersen <andersen@uclibc.org>
+ *
+ * Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball.
+ */
+#include <setjmp.h>
+#include <jmpbuf-offsets.h>
+
+/* Test if longjmp to JMPBUF would unwind the frame
+   containing a local variable at ADDRESS.  */
+#define _JMPBUF_UNWINDS(jmpbuf, address) \
+  ((void *) (address) < (void *) (jmpbuf)[JB_GPR1])