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https://github.com/tobast/libunwind-eh_elf.git
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189 lines
11 KiB
C
189 lines
11 KiB
C
/* libunwind - a platform-independent unwind library
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Copyright (C) 2002-2005 Hewlett-Packard Co
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Contributed by David Mosberger-Tang <davidm@hpl.hp.com>
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This file is part of libunwind.
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Permission is hereby granted, free of charge, to any person obtaining
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a copy of this software and associated documentation files (the
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"Software"), to deal in the Software without restriction, including
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without limitation the rights to use, copy, modify, merge, publish,
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distribute, sublicense, and/or sell copies of the Software, and to
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permit persons to whom the Software is furnished to do so, subject to
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the following conditions:
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The above copyright notice and this permission notice shall be
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included in all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
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/* Logically, we like to think of the stack as a contiguous region of
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memory. Unfortunately, this logical view doesn't work for the
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register backing store, because the RSE is an asynchronous engine and
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because UNIX/Linux allow for stack-switching via sigaltstack(2).
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Specifically, this means that any given stacked register may or may
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not be backed up by memory in the current stack. If not, then the
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backing memory may be found in any of the "more inner" (younger)
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stacks. The routines in this file help manage the discontiguous
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nature of the register backing store. The routines are completely
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independent of UNIX/Linux, but each stack frame that switches the
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backing store is expected to reserve 4 words for use by libunwind. For
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example, in the Linux sigcontext, sc_fr[0] and sc_fr[1] serve this
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purpose. */
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#include "libunwind_i.h"
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/* Maintain the register names as a single string to keep the number
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of dynamic relocations in the shared object to a minimum. */
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#define regname_len 9
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#define regname_str \
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"r0\0\0\0\0\0\0\0r1\0\0\0\0\0\0\0r2\0\0\0\0\0\0\0r3\0\0\0\0\0\0\0" \
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"r4\0\0\0\0\0\0\0r5\0\0\0\0\0\0\0r6\0\0\0\0\0\0\0r7\0\0\0\0\0\0\0" \
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"r8\0\0\0\0\0\0\0r9\0\0\0\0\0\0\0r10\0\0\0\0\0\0r11\0\0\0\0\0\0" \
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"r12\0\0\0\0\0\0r13\0\0\0\0\0\0r14\0\0\0\0\0\0r15\0\0\0\0\0\0" \
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"r16\0\0\0\0\0\0r17\0\0\0\0\0\0r18\0\0\0\0\0\0r19\0\0\0\0\0\0" \
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"r20\0\0\0\0\0\0r21\0\0\0\0\0\0r22\0\0\0\0\0\0r23\0\0\0\0\0\0" \
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"r24\0\0\0\0\0\0r25\0\0\0\0\0\0r26\0\0\0\0\0\0r27\0\0\0\0\0\0" \
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"r28\0\0\0\0\0\0r29\0\0\0\0\0\0r30\0\0\0\0\0\0r31\0\0\0\0\0\0" \
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"r32\0\0\0\0\0\0r33\0\0\0\0\0\0r34\0\0\0\0\0\0r35\0\0\0\0\0\0" \
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"r36\0\0\0\0\0\0r37\0\0\0\0\0\0r38\0\0\0\0\0\0r39\0\0\0\0\0\0" \
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"r40\0\0\0\0\0\0r41\0\0\0\0\0\0r42\0\0\0\0\0\0r43\0\0\0\0\0\0" \
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"r44\0\0\0\0\0\0r45\0\0\0\0\0\0r46\0\0\0\0\0\0r47\0\0\0\0\0\0" \
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"r48\0\0\0\0\0\0r49\0\0\0\0\0\0r50\0\0\0\0\0\0r51\0\0\0\0\0\0" \
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"r52\0\0\0\0\0\0r53\0\0\0\0\0\0r54\0\0\0\0\0\0r55\0\0\0\0\0\0" \
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"r56\0\0\0\0\0\0r57\0\0\0\0\0\0r58\0\0\0\0\0\0r59\0\0\0\0\0\0" \
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"r60\0\0\0\0\0\0r61\0\0\0\0\0\0r62\0\0\0\0\0\0r63\0\0\0\0\0\0" \
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"r64\0\0\0\0\0\0r65\0\0\0\0\0\0r66\0\0\0\0\0\0r67\0\0\0\0\0\0" \
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"r68\0\0\0\0\0\0r69\0\0\0\0\0\0r70\0\0\0\0\0\0r71\0\0\0\0\0\0" \
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"r72\0\0\0\0\0\0r73\0\0\0\0\0\0r74\0\0\0\0\0\0r75\0\0\0\0\0\0" \
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"r76\0\0\0\0\0\0r77\0\0\0\0\0\0r78\0\0\0\0\0\0r79\0\0\0\0\0\0" \
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"r80\0\0\0\0\0\0r81\0\0\0\0\0\0r82\0\0\0\0\0\0r83\0\0\0\0\0\0" \
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"r84\0\0\0\0\0\0r85\0\0\0\0\0\0r86\0\0\0\0\0\0r87\0\0\0\0\0\0" \
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"r88\0\0\0\0\0\0r89\0\0\0\0\0\0r90\0\0\0\0\0\0r91\0\0\0\0\0\0" \
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"r92\0\0\0\0\0\0r93\0\0\0\0\0\0r94\0\0\0\0\0\0r95\0\0\0\0\0\0" \
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"r96\0\0\0\0\0\0r97\0\0\0\0\0\0r98\0\0\0\0\0\0r99\0\0\0\0\0\0" \
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"r100\0\0\0\0\0r101\0\0\0\0\0r102\0\0\0\0\0r103\0\0\0\0\0" \
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"r104\0\0\0\0\0r105\0\0\0\0\0r106\0\0\0\0\0r107\0\0\0\0\0" \
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"r108\0\0\0\0\0r109\0\0\0\0\0r110\0\0\0\0\0r111\0\0\0\0\0" \
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"r112\0\0\0\0\0r113\0\0\0\0\0r114\0\0\0\0\0r115\0\0\0\0\0" \
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"r116\0\0\0\0\0r117\0\0\0\0\0r118\0\0\0\0\0r119\0\0\0\0\0" \
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"r120\0\0\0\0\0r121\0\0\0\0\0r122\0\0\0\0\0r123\0\0\0\0\0" \
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"r124\0\0\0\0\0r125\0\0\0\0\0r126\0\0\0\0\0r127\0\0\0\0\0" \
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"nat0\0\0\0\0\0nat1\0\0\0\0\0nat2\0\0\0\0\0nat3\0\0\0\0\0" \
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"nat4\0\0\0\0\0nat5\0\0\0\0\0nat6\0\0\0\0\0nat7\0\0\0\0\0" \
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"nat8\0\0\0\0\0nat9\0\0\0\0\0nat10\0\0\0\0nat11\0\0\0\0" \
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"nat12\0\0\0\0nat13\0\0\0\0nat14\0\0\0\0nat15\0\0\0\0" \
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"nat16\0\0\0\0nat17\0\0\0\0nat18\0\0\0\0nat19\0\0\0\0" \
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"nat20\0\0\0\0nat21\0\0\0\0nat22\0\0\0\0nat23\0\0\0\0" \
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"nat24\0\0\0\0nat25\0\0\0\0nat26\0\0\0\0nat27\0\0\0\0" \
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"nat28\0\0\0\0nat29\0\0\0\0nat30\0\0\0\0nat31\0\0\0\0" \
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"nat32\0\0\0\0nat33\0\0\0\0nat34\0\0\0\0nat35\0\0\0\0" \
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"nat36\0\0\0\0nat37\0\0\0\0nat38\0\0\0\0nat39\0\0\0\0" \
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"nat40\0\0\0\0nat41\0\0\0\0nat42\0\0\0\0nat43\0\0\0\0" \
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"nat44\0\0\0\0nat45\0\0\0\0nat46\0\0\0\0nat47\0\0\0\0" \
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"nat48\0\0\0\0nat49\0\0\0\0nat50\0\0\0\0nat51\0\0\0\0" \
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"nat52\0\0\0\0nat53\0\0\0\0nat54\0\0\0\0nat55\0\0\0\0" \
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"nat56\0\0\0\0nat57\0\0\0\0nat58\0\0\0\0nat59\0\0\0\0" \
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"nat60\0\0\0\0nat61\0\0\0\0nat62\0\0\0\0nat63\0\0\0\0" \
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"nat64\0\0\0\0nat65\0\0\0\0nat66\0\0\0\0nat67\0\0\0\0" \
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"nat68\0\0\0\0nat69\0\0\0\0nat70\0\0\0\0nat71\0\0\0\0" \
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"nat72\0\0\0\0nat73\0\0\0\0nat74\0\0\0\0nat75\0\0\0\0" \
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"nat76\0\0\0\0nat77\0\0\0\0nat78\0\0\0\0nat79\0\0\0\0" \
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"nat80\0\0\0\0nat81\0\0\0\0nat82\0\0\0\0nat83\0\0\0\0" \
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"nat84\0\0\0\0nat85\0\0\0\0nat86\0\0\0\0nat87\0\0\0\0" \
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"nat88\0\0\0\0nat89\0\0\0\0nat90\0\0\0\0nat91\0\0\0\0" \
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"nat92\0\0\0\0nat93\0\0\0\0nat94\0\0\0\0nat95\0\0\0\0" \
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"nat96\0\0\0\0nat97\0\0\0\0nat98\0\0\0\0nat99\0\0\0\0" \
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"nat100\0\0\0nat101\0\0\0nat102\0\0\0nat103\0\0\0" \
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"nat104\0\0\0nat105\0\0\0nat106\0\0\0nat107\0\0\0" \
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"nat108\0\0\0nat109\0\0\0nat110\0\0\0nat111\0\0\0" \
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"nat112\0\0\0nat113\0\0\0nat114\0\0\0nat115\0\0\0" \
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"nat116\0\0\0nat117\0\0\0nat118\0\0\0nat119\0\0\0" \
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"nat120\0\0\0nat121\0\0\0nat122\0\0\0nat123\0\0\0" \
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"nat124\0\0\0nat125\0\0\0nat126\0\0\0nat127\0\0\0" \
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"f0\0\0\0\0\0\0\0f1\0\0\0\0\0\0\0f2\0\0\0\0\0\0\0f3\0\0\0\0\0\0\0" \
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"f4\0\0\0\0\0\0\0f5\0\0\0\0\0\0\0f6\0\0\0\0\0\0\0f7\0\0\0\0\0\0\0" \
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"f8\0\0\0\0\0\0\0f9\0\0\0\0\0\0\0f10\0\0\0\0\0\0f11\0\0\0\0\0\0" \
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"f12\0\0\0\0\0\0f13\0\0\0\0\0\0f14\0\0\0\0\0\0f15\0\0\0\0\0\0" \
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"f16\0\0\0\0\0\0f17\0\0\0\0\0\0f18\0\0\0\0\0\0f19\0\0\0\0\0\0" \
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"f20\0\0\0\0\0\0f21\0\0\0\0\0\0f22\0\0\0\0\0\0f23\0\0\0\0\0\0" \
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"f24\0\0\0\0\0\0f25\0\0\0\0\0\0f26\0\0\0\0\0\0f27\0\0\0\0\0\0" \
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"f28\0\0\0\0\0\0f29\0\0\0\0\0\0f30\0\0\0\0\0\0f31\0\0\0\0\0\0" \
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"f32\0\0\0\0\0\0f33\0\0\0\0\0\0f34\0\0\0\0\0\0f35\0\0\0\0\0\0" \
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"f36\0\0\0\0\0\0f37\0\0\0\0\0\0f38\0\0\0\0\0\0f39\0\0\0\0\0\0" \
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"f40\0\0\0\0\0\0f41\0\0\0\0\0\0f42\0\0\0\0\0\0f43\0\0\0\0\0\0" \
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"f44\0\0\0\0\0\0f45\0\0\0\0\0\0f46\0\0\0\0\0\0f47\0\0\0\0\0\0" \
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"f48\0\0\0\0\0\0f49\0\0\0\0\0\0f50\0\0\0\0\0\0f51\0\0\0\0\0\0" \
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"f52\0\0\0\0\0\0f53\0\0\0\0\0\0f54\0\0\0\0\0\0f55\0\0\0\0\0\0" \
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"f56\0\0\0\0\0\0f57\0\0\0\0\0\0f58\0\0\0\0\0\0f59\0\0\0\0\0\0" \
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"f60\0\0\0\0\0\0f61\0\0\0\0\0\0f62\0\0\0\0\0\0f63\0\0\0\0\0\0" \
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"f64\0\0\0\0\0\0f65\0\0\0\0\0\0f66\0\0\0\0\0\0f67\0\0\0\0\0\0" \
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"f68\0\0\0\0\0\0f69\0\0\0\0\0\0f70\0\0\0\0\0\0f71\0\0\0\0\0\0" \
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"f72\0\0\0\0\0\0f73\0\0\0\0\0\0f74\0\0\0\0\0\0f75\0\0\0\0\0\0" \
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"f76\0\0\0\0\0\0f77\0\0\0\0\0\0f78\0\0\0\0\0\0f79\0\0\0\0\0\0" \
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"f80\0\0\0\0\0\0f81\0\0\0\0\0\0f82\0\0\0\0\0\0f83\0\0\0\0\0\0" \
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"f84\0\0\0\0\0\0f85\0\0\0\0\0\0f86\0\0\0\0\0\0f87\0\0\0\0\0\0" \
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"f88\0\0\0\0\0\0f89\0\0\0\0\0\0f90\0\0\0\0\0\0f91\0\0\0\0\0\0" \
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"f92\0\0\0\0\0\0f93\0\0\0\0\0\0f94\0\0\0\0\0\0f95\0\0\0\0\0\0" \
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"f96\0\0\0\0\0\0f97\0\0\0\0\0\0f98\0\0\0\0\0\0f99\0\0\0\0\0\0" \
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"f100\0\0\0\0\0f101\0\0\0\0\0f102\0\0\0\0\0f103\0\0\0\0\0" \
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"f104\0\0\0\0\0f105\0\0\0\0\0f106\0\0\0\0\0f107\0\0\0\0\0" \
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"f108\0\0\0\0\0f109\0\0\0\0\0f110\0\0\0\0\0f111\0\0\0\0\0" \
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"f112\0\0\0\0\0f113\0\0\0\0\0f114\0\0\0\0\0f115\0\0\0\0\0" \
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"f116\0\0\0\0\0f117\0\0\0\0\0f118\0\0\0\0\0f119\0\0\0\0\0" \
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"f120\0\0\0\0\0f121\0\0\0\0\0f122\0\0\0\0\0f123\0\0\0\0\0" \
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"f124\0\0\0\0\0f125\0\0\0\0\0f126\0\0\0\0\0f127\0\0\0\0\0" \
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"ar0\0\0\0\0\0\0ar1\0\0\0\0\0\0ar2\0\0\0\0\0\0ar3\0\0\0\0\0\0" \
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"ar4\0\0\0\0\0\0ar5\0\0\0\0\0\0ar6\0\0\0\0\0\0ar7\0\0\0\0\0\0" \
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"ar8\0\0\0\0\0\0ar9\0\0\0\0\0\0ar10\0\0\0\0\0ar11\0\0\0\0\0" \
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"ar12\0\0\0\0\0ar13\0\0\0\0\0ar14\0\0\0\0\0ar15\0\0\0\0\0" \
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"rsc\0\0\0\0\0\0bsp\0\0\0\0\0\0bspstore\0rnat\0\0\0\0\0" \
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"ar20\0\0\0\0\0ar21\0\0\0\0\0ar22\0\0\0\0\0ar23\0\0\0\0\0" \
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"ar24\0\0\0\0\0ar25\0\0\0\0\0ar26\0\0\0\0\0ar27\0\0\0\0\0" \
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"ar28\0\0\0\0\0ar29\0\0\0\0\0ar30\0\0\0\0\0ar31\0\0\0\0\0" \
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"ccv\0\0\0\0\0\0ar33\0\0\0\0\0ar34\0\0\0\0\0ar35\0\0\0\0\0" \
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"unat\0\0\0\0\0ar37\0\0\0\0\0ar38\0\0\0\0\0ar39\0\0\0\0\0" \
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"fpsr\0\0\0\0\0ar41\0\0\0\0\0ar42\0\0\0\0\0ar43\0\0\0\0\0" \
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"ar44\0\0\0\0\0ar45\0\0\0\0\0ar46\0\0\0\0\0ar47\0\0\0\0\0" \
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"ar48\0\0\0\0\0ar49\0\0\0\0\0ar50\0\0\0\0\0ar51\0\0\0\0\0" \
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"ar52\0\0\0\0\0ar53\0\0\0\0\0ar54\0\0\0\0\0ar55\0\0\0\0\0" \
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"ar56\0\0\0\0\0ar57\0\0\0\0\0ar58\0\0\0\0\0ar59\0\0\0\0\0" \
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"ar60\0\0\0\0\0ar61\0\0\0\0\0ar62\0\0\0\0\0ar63\0\0\0\0\0" \
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"pfs\0\0\0\0\0\0lc\0\0\0\0\0\0\0ec\0\0\0\0\0\0\0ar67\0\0\0\0\0" \
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"ar68\0\0\0\0\0ar69\0\0\0\0\0ar70\0\0\0\0\0ar71\0\0\0\0\0" \
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"ar72\0\0\0\0\0ar73\0\0\0\0\0ar74\0\0\0\0\0ar75\0\0\0\0\0" \
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"ar76\0\0\0\0\0ar77\0\0\0\0\0ar78\0\0\0\0\0ar79\0\0\0\0\0" \
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"ar80\0\0\0\0\0ar81\0\0\0\0\0ar82\0\0\0\0\0ar83\0\0\0\0\0" \
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"ar84\0\0\0\0\0ar85\0\0\0\0\0ar86\0\0\0\0\0ar87\0\0\0\0\0" \
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"ar88\0\0\0\0\0ar89\0\0\0\0\0ar90\0\0\0\0\0ar91\0\0\0\0\0" \
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"ar92\0\0\0\0\0ar93\0\0\0\0\0ar94\0\0\0\0\0ar95\0\0\0\0\0" \
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"ar96\0\0\0\0\0ar97\0\0\0\0\0ar98\0\0\0\0\0ar99\0\0\0\0\0" \
|
|
"ar100\0\0\0\0ar101\0\0\0\0ar102\0\0\0\0ar103\0\0\0\0" \
|
|
"ar104\0\0\0\0ar105\0\0\0\0ar106\0\0\0\0ar107\0\0\0\0" \
|
|
"ar108\0\0\0\0ar109\0\0\0\0ar110\0\0\0\0ar111\0\0\0\0" \
|
|
"ar112\0\0\0\0ar113\0\0\0\0ar114\0\0\0\0ar115\0\0\0\0" \
|
|
"ar116\0\0\0\0ar117\0\0\0\0ar118\0\0\0\0ar119\0\0\0\0" \
|
|
"ar120\0\0\0\0ar121\0\0\0\0ar122\0\0\0\0ar123\0\0\0\0" \
|
|
"ar124\0\0\0\0ar125\0\0\0\0ar126\0\0\0\0ar127\0\0\0\0" \
|
|
"rp\0\0\0\0\0\0\0b1\0\0\0\0\0\0\0b2\0\0\0\0\0\0\0b3\0\0\0\0\0\0\0" \
|
|
"b4\0\0\0\0\0\0\0b5\0\0\0\0\0\0\0b6\0\0\0\0\0\0\0b7\0\0\0\0\0\0\0" \
|
|
"pr\0\0\0\0\0\0\0cfm\0\0\0\0\0\0bsp\0\0\0\0\0\0ip\0\0\0\0\0\0\0" \
|
|
"sp\0\0\0\0\0\0\0"
|
|
|
|
#define NREGS ((int) (sizeof (regname_str) - 1) / regname_len)
|
|
|
|
PROTECTED const char *
|
|
unw_regname (unw_regnum_t reg)
|
|
{
|
|
if (reg < NREGS)
|
|
return regname_str + reg * regname_len;
|
|
else
|
|
return "???";
|
|
}
|