forked from Imagelibrary/rtems
db19f09a21
The PowerPC has both 32 and 64 bit CPUs within a single architecture and collection of BSPs. This change set addresses cases where the format specifier, type, or cast was not correct or portable across 32 and 64 bit environments.
57 lines
2.1 KiB
C
57 lines
2.1 KiB
C
/* SPDX-License-Identifier: BSD-2-Clause */
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/*
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* Copyright (c) 2011 embedded brains GmbH & Co. KG
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <rtems.h>
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#include <bsp/vectors.h>
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int ppc_exc_alignment_handler(BSP_Exception_frame *frame, unsigned excNum)
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{
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unsigned opcode = *(unsigned *) frame->EXC_SRR0;
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/* Do we have a dcbz instruction? */
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if ((opcode & 0xffe007ff) == 0x7c0007ec) {
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unsigned clsz = rtems_cache_get_data_line_size();
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unsigned a = (opcode >> 16) & 0x1f;
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unsigned b = (opcode >> 11) & 0x1f;
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PPC_GPR_TYPE *regs = &frame->GPR0;
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unsigned *current = (unsigned *)
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(((a == 0 ? 0 : (uintptr_t) regs[a]) + (uintptr_t) regs[b]) & (clsz - 1));
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unsigned *end = current + clsz / sizeof(*current);
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while (current != end) {
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*current = 0;
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++current;
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}
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frame->EXC_SRR0 += 4;
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return 0;
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} else {
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return -1;
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}
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}
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