35859e5946
available by Hewlett-Packard under the MIT license. The unwinder is small, clean and fast and needed little adaptation for use in the kernel. This import has embedded in it the changes needed to make it build in a kernel environment. To optimize the common case, the kernel will minimize the number of registers saved by not saving the preserved registers. In case access to preserved registers is needed (signal handling, ptrace) the kernel will unwind to the context of the syscall or exception. For this we need an unwinder. Approved by: re (blanket)
71 lines
2.0 KiB
C
71 lines
2.0 KiB
C
/*
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* Copyright (c) 2002,2003 Hewlett-Packard Company
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included
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* in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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* DEALINGS IN THE SOFTWARE.
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*/
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#include <stdio.h>
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#include <inttypes.h>
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void dump_context(uint64_t *context)
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{
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int i, j;
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uint64_t val;
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static char *names[] = {
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"ip", "sp", "bsp", "cfm",
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"rp", "psp", "pfs", "preds",
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"priunat", "bspstore", "rnat", "unat",
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"fpsr", "lc",
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"gr4", "gr5", "gr6", "gr7",
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"br1", "br2", "br3", "br4", "br5"
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};
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static int order[] = {
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0, 14,
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1, 15,
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2, 16,
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3, 17,
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7, 18,
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8, 19,
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10, 20,
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11, 21,
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12, 22,
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13, -1
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};
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for (i = 0; i < 20; i += 2) {
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j = order[i];
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if (j >= 0) {
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val = context[j+1];
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printf(" %-8s %08x %08x", names[j],
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(unsigned int)(val >> 32),
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(unsigned int)val);
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}
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else
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printf(" ");
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j = order[i+1];
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if (j >= 0) {
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val = context[j+1];
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printf(" %-8s %08x %08x", names[j],
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(unsigned int)(val >> 32),
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(unsigned int)val);
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}
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putchar('\n');
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}
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}
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