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[/] [openrisc/] [tags/] [gnu-src/] [gdb-7.2/] [gdb-7.2-or32-1.0rc3/] [sim/] [ppc/] [altivec_registers.h] - Rev 513
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/* Altivec registers, for PSIM, the PowerPC simulator. Copyright 2003, 2007, 2008, 2009, 2010 Free Software Foundation, Inc. Contributed by Red Hat Inc; developed under contract from Motorola. Written by matthew green <mrg@redhat.com>. This file is part of GDB. This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 3 of the License, or (at your option) any later version. This program 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 General Public License for more details. You should have received a copy of the GNU General Public License along with this program. If not, see <http://www.gnu.org/licenses/>. */ /* Manage this as 4 32-bit entities, 8 16-bit entities or 16 8-bit entities. */ typedef union { unsigned8 b[16]; unsigned16 h[8]; unsigned32 w[4]; } vreg; typedef unsigned32 vscreg; struct altivec_regs { /* AltiVec Registers */ vreg vr[32]; vscreg vscr; }; /* AltiVec registers */ #define VR(N) cpu_registers(processor)->altivec.vr[N] /* AltiVec vector status and control register */ #define VSCR cpu_registers(processor)->altivec.vscr /* AltiVec endian helpers, wrong endian hosts vs targets need to be sure to get the right bytes/halfs/words when the order matters. Note that many AltiVec instructions do not depend on byte order and work on N independant bits of data. This is only for the instructions that actually move data around. */ #if (WITH_HOST_BYTE_ORDER == BIG_ENDIAN) #define AV_BINDEX(x) ((x) & 15) #define AV_HINDEX(x) ((x) & 7) #else static char endian_b2l_bindex[16] = { 3, 2, 1, 0, 7, 6, 5, 4, 11, 10, 9, 8, 15, 14, 13, 12 }; static char endian_b2l_hindex[16] = { 1, 0, 3, 2, 5, 4, 7, 6 }; #define AV_BINDEX(x) endian_b2l_bindex[(x) & 15] #define AV_HINDEX(x) endian_b2l_hindex[(x) & 7] #endif