* sysdeps/powerpc/bp-asm.h: New file.

* sysdeps/powerpc/__longjmp.S:  Check bounds. 
Wrap extern symbols in BP_SYM (). 
* sysdeps/powerpc/bsd-_setjmp.S: Likewise. 
* sysdeps/powerpc/bsd-setjmp.S: Likewise. 
* sysdeps/powerpc/setjmp.S: Likewise. 
* sysdeps/powerpc/add_n.S: Likewise. 
* sysdeps/powerpc/addmul_1.S: Likewise. 
* sysdeps/powerpc/lshift.S: Likewise. 
* sysdeps/powerpc/rshift.S: Likewise. 
* sysdeps/powerpc/mul_1.S: Likewise. 
* sysdeps/powerpc/sub_n.S: Likewise. 
* sysdeps/powerpc/submul_1.S: Likewise. 
* sysdeps/powerpc/strlen.S: Likewise. 
* sysdeps/powerpc/memset.S: Likewise. 
* sysdeps/powerpc/stpcpy.S: Likewise. 
* sysdeps/powerpc/strcmp.S: Likewise. 
* sysdeps/powerpc/strcpy.S: Likewise. 
* sysdeps/powerpc/elf/bzero.S: Likewise.
	* sysdeps/powerpc/bp-asm.h: New file.
	* sysdeps/powerpc/__longjmp.S:  Check bounds.
	Wrap extern symbols in BP_SYM ().
	* sysdeps/powerpc/bsd-_setjmp.S: Likewise.
	* sysdeps/powerpc/bsd-setjmp.S: Likewise.
	* sysdeps/powerpc/setjmp.S: Likewise.
	* sysdeps/powerpc/add_n.S: Likewise.
	* sysdeps/powerpc/addmul_1.S: Likewise.
	* sysdeps/powerpc/lshift.S: Likewise.
	* sysdeps/powerpc/rshift.S: Likewise.
	* sysdeps/powerpc/mul_1.S: Likewise.
	* sysdeps/powerpc/sub_n.S: Likewise.
	* sysdeps/powerpc/submul_1.S: Likewise.
	* sysdeps/powerpc/strlen.S: Likewise.
	* sysdeps/powerpc/memset.S: Likewise.
	* sysdeps/powerpc/stpcpy.S: Likewise.
	* sysdeps/powerpc/strcmp.S: Likewise.
	* sysdeps/powerpc/strcpy.S: Likewise.
	* sysdeps/powerpc/elf/bzero.S: Likewise.

1 files changed, 115 insertions, 0 deletions

diff --git a/sysdeps/powerpc/bp-asm.h b/sysdeps/powerpc/bp-asm.h
new file mode 100644
index 0000000000..e7a364007c
--- /dev/null
+++ b/sysdeps/powerpc/bp-asm.h
@@ -0,0 +1,115 @@
+/* Bounded-pointer definitions for PowerPC assembler.
+   Copyright (C) 2000 Free Software Foundation, Inc.
+   Contributed by Greg McGary <greg@mcgary.org>
+
+   This file is part of the GNU C Library.  Its master source is NOT part of
+   the C library, however.  The master source lives in the GNU MP Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 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
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#if __BOUNDED_POINTERS__
+
+/* Byte offsets of BP components.  */
+# define oVALUE	0
+# define oLOW	4
+# define oHIGH	8
+
+/* Don't check bounds, just convert the BP register to its simple
+   pointer value.  */
+
+# define UNCHECK_BOUNDS(rBP)			\
+	lwz	rBP, oVALUE(rBP)
+
+/* Check low bound, with the side effect that the BP register is converted
+   its simple pointer value.  Move the high bound into a register for
+   later use.  */
+
+# define CHECK_BOUNDS_LOW(rBP, rLOW, rHIGH)	\
+	lwz	rHIGH, oHIGH(rBP);		\
+	lwz	rLOW, oLOW(rBP);		\
+	lwz	rBP, oVALUE(rBP);		\
+	twllt	rBP, rLOW
+
+/* Check the high bound, which is in a register, using the given
+   conditional trap instruction.  */
+
+# define CHECK_BOUNDS_HIGH(rVALUE, rHIGH, TWLcc) \
+	TWLcc	rVALUE, rHIGH
+
+/* Check the high bound, which is stored at the return-value's high
+   bound slot, using the given conditional trap instruction.  */
+
+# define CHECK_BOUNDS_HIGH_RTN(rVALUE, rHIGH, TWLcc)	\
+	lwz	rHIGH, oHIGH(rRTN);			\
+	TWLcc	rVALUE, rHIGH
+
+/* Check both bounds, with the side effect that the BP register is
+   converted to its simple pointer value.  */
+
+# define CHECK_BOUNDS_BOTH(rBP, rLOW, rHIGH)	\
+	CHECK_BOUNDS_LOW(rBP, rLOW, rHIGH);	\
+	twlge	rBP, rHIGH
+
+/* Check bounds on a memory region of given length, with the side
+   effect that the BP register is converted to its simple pointer
+   value.  */
+
+# define CHECK_BOUNDS_BOTH_WIDE(rBP, rLOW, rHIGH, rLENGTH)	\
+	CHECK_BOUNDS_LOW (rBP, rLOW, rHIGH);			\
+	sub	rHIGH, rHIGH, rLENGTH;				\
+	twlgt	rBP, rHIGH
+
+# define CHECK_BOUNDS_BOTH_WIDE_LIT(rBP, rLOW, rHIGH, LENGTH)	\
+	CHECK_BOUNDS_LOW (rBP, rLOW, rHIGH);			\
+	subi	rHIGH, rHIGH, LENGTH;				\
+	twlgt	rBP, rHIGH
+
+/* Store a pointer value register into the return-value's pointer
+   value slot.  */
+
+# define STORE_RETURN_VALUE(rVALUE)		\
+	stw	rVALUE, oVALUE(rRTN)
+
+/* Store a low and high bounds into the return-value's pointer bounds
+   slots.  */
+
+# define STORE_RETURN_BOUNDS(rLOW, rHIGH)	\
+	stw	rLOW, oLOW(rRTN);		\
+	stw	rHIGH, oHIGH(rRTN)
+
+/* Stuff zero value/low/high into the BP addressed by rRTN.  */
+
+# define RETURN_NULL_BOUNDED_POINTER		\
+	li	r4, 0;				\
+	STORE_RETURN_VALUE (r4);		\
+	STORE_RETURN_BOUNDS (r4, r4)
+
+#else
+
+# define UNCHECK_BOUNDS(rBP)
+# define CHECK_BOUNDS_LOW(rBP, rLOW, rHIGH)
+# define CHECK_BOUNDS_HIGH(rVALUE, rHIGH, TWLcc)
+# define CHECK_BOUNDS_HIGH_RTN(rVALUE, rHIGH, TWLcc)
+# define CHECK_BOUNDS_BOTH(rBP, rLOW, rHIGH)
+# define CHECK_BOUNDS_BOTH_WIDE(rBP, rLOW, rHIGH, rLENGTH)
+# define CHECK_BOUNDS_BOTH_WIDE_LIT(rBP, rLOW, rHIGH, LENGTH)
+# define STORE_RETURN_VALUE(rVALUE)
+# define STORE_RETURN_BOUNDS(rLOW, rHIGH)
+
+# define RETURN_NULL_BOUNDED_POINTER li rRTN, 0
+
+#endif
+