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Diffstat (limited to 'sysdeps/powerpc/powerpc32/bp-asm.h')
| -rw-r--r-- | sysdeps/powerpc/powerpc32/bp-asm.h | 112 |
1 files changed, 0 insertions, 112 deletions
diff --git a/sysdeps/powerpc/powerpc32/bp-asm.h b/sysdeps/powerpc/powerpc32/bp-asm.h deleted file mode 100644 index 0e5d07be36..0000000000 --- a/sysdeps/powerpc/powerpc32/bp-asm.h +++ /dev/null @@ -1,112 +0,0 @@ -/* Bounded-pointer definitions for PowerPC assembler. - Copyright (C) 2000-2013 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 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, see - <http://www.gnu.org/licenses/>. */ - -#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 DISCARD_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 DISCARD_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 |