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51 lines
1.7 KiB
C
51 lines
1.7 KiB
C
/* libunwind - a platform-independent unwind library
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Copyright (C) 2003 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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#include "_UPT_internal.h"
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int
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_UPT_access_mem (unw_addr_space_t as, unw_word_t addr, unw_word_t *val,
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int write, void *arg)
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{
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struct UPT_info *ui = arg;
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pid_t pid = ui->pid;
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errno = 0;
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if (write)
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{
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debug (100, "%s: mem[%lx] <- %lx\n", __FUNCTION__, addr, *val);
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ptrace (PTRACE_POKEDATA, pid, addr, *val);
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if (errno)
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return -UNW_EINVAL;
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}
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else
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{
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*val = ptrace (PTRACE_PEEKDATA, pid, addr, 0);
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if (errno)
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return -UNW_EINVAL;
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debug (100, "%s: mem[%lx] -> %lx\n", __FUNCTION__, addr, *val);
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}
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return 0;
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}
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