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- /* Altivec registers, for PSIM, the PowerPC simulator.
- Copyright 2003-2022 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
- {
- uint8_t b[16];
- uint16_t h[8];
- uint32_t w[4];
- } vreg;
- typedef uint32_t 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 (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
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