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e6b9f350f7
routine and add address-space argument. This is needed because on PPC64, a the function-name symbol refers to a function descriptor (unlike, for example, on ia64, where the @fptr() operator is needed to refer to a function descriptor). Thus, in order to look up the name of a function, we need to dereference the function descriptor. To make matters more "interesting", the function descriptors are normally resolved by the dynamic linker, so we can't get their values from the ELF file. Instead, we have to read them from the running image, hence the need for the address-space argument.
42 lines
1.6 KiB
C
42 lines
1.6 KiB
C
/* libunwind - a platform-independent unwind library
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Copyright (C) 2003 Hewlett-Packard Co
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Copyright (C) 2007 David Mosberger-Tang
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Contributed by David Mosberger-Tang <dmosberger@gmail.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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#include "_UPT_internal.h"
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int
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_UPT_get_proc_name (unw_addr_space_t as, unw_word_t ip,
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char *buf, size_t buf_len, unw_word_t *offp, void *arg)
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{
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struct UPT_info *ui = arg;
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#if ELF_CLASS == ELFCLASS64
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return _Uelf64_get_proc_name (as, ui->pid, ip, buf, buf_len, offp);
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#elif ELF_CLASS == ELFCLASS32
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return _Uelf32_get_proc_name (as, ui->pid, ip, buf, buf_len, offp);
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#else
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return -UNW_ENOINFO;
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#endif
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}
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