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66 lines
2.1 KiB
C
66 lines
2.1 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_fpreg (unw_addr_space_t as, unw_regnum_t reg, unw_fpreg_t *val,
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int write, void *arg)
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{
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unw_word_t *wp = (unw_word_t *) val;
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struct UPT_info *ui = arg;
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pid_t pid = ui->pid;
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int i;
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if ((unsigned) reg >= sizeof (_UPT_reg_offset) / sizeof (_UPT_reg_offset[0]))
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return -UNW_EBADREG;
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errno = 0;
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if (write)
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for (i = 0; i < (int) (sizeof (*val) / sizeof (wp[i])); ++i)
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{
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#ifdef HAVE_TTRACE
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# warning No support for ttrace() yet.
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#else
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ptrace (PTRACE_POKEUSER, pid, _UPT_reg_offset[reg] + i * sizeof(wp[i]),
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wp[i]);
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#endif
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if (errno)
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return -UNW_EBADREG;
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}
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else
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for (i = 0; i < (int) (sizeof (*val) / sizeof (wp[i])); ++i)
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{
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#ifdef HAVE_TTRACE
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# warning No support for ttrace() yet.
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#else
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wp[i] = ptrace (PTRACE_PEEKUSER, pid,
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_UPT_reg_offset[reg] + i * sizeof(wp[i]), 0);
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#endif
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if (errno)
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return -UNW_EBADREG;
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}
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return 0;
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}
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