12345678910111213141516171819202122232425262728293031323334353637383940414243444546474849505152535455565758596061626364656667686970717273747576777879808182838485 |
- /* libunwind - a platform-independent unwind library
- Copyright (C) 2003-2004 Hewlett-Packard Co
- Contributed by David Mosberger-Tang <davidm@hpl.hp.com>
- Copyright (C) 2010 Konstantin Belousov <kib@freebsd.org>
- This file is part of libunwind.
- Permission is hereby granted, free of charge, to any person obtaining
- a copy of this software and associated documentation files (the
- "Software"), to deal in the Software without restriction, including
- without limitation the rights to use, copy, modify, merge, publish,
- distribute, sublicense, and/or sell copies of the Software, and to
- permit persons to whom the Software is furnished to do so, subject to
- the following conditions:
- The above copyright notice and this permission notice shall be
- included in all copies or substantial portions of the Software.
- THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
- EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
- MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
- NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
- LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
- OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
- WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
- #include "_UPT_internal.h"
- #if HAVE_DECL_PTRACE_POKEDATA || HAVE_TTRACE
- int
- _UPT_access_mem (unw_addr_space_t as, unw_word_t addr, unw_word_t *val,
- int write, void *arg)
- {
- struct UPT_info *ui = arg;
- pid_t pid = ui->pid;
- errno = 0;
- if (write)
- {
- Debug (16, "mem[%lx] <- %lx\n", (long) addr, (long) *val);
- #ifdef HAVE_TTRACE
- # warning No support for ttrace() yet.
- #else
- ptrace (PTRACE_POKEDATA, pid, addr, *val);
- if (errno)
- return -UNW_EINVAL;
- #endif
- }
- else
- {
- #ifdef HAVE_TTRACE
- # warning No support for ttrace() yet.
- #else
- *val = ptrace (PTRACE_PEEKDATA, pid, addr, 0);
- if (errno)
- return -UNW_EINVAL;
- #endif
- Debug (16, "mem[%lx] -> %lx\n", (long) addr, (long) *val);
- }
- return 0;
- }
- #elif HAVE_DECL_PT_IO
- int
- _UPT_access_mem (unw_addr_space_t as, unw_word_t addr, unw_word_t *val,
- int write, void *arg)
- {
- struct UPT_info *ui = arg;
- pid_t pid = ui->pid;
- struct ptrace_io_desc iod;
- iod.piod_offs = (void *)addr;
- iod.piod_addr = val;
- iod.piod_len = sizeof(*val);
- iod.piod_op = write ? PIOD_WRITE_D : PIOD_READ_D;
- if (write)
- Debug (16, "mem[%lx] <- %lx\n", (long) addr, (long) *val);
- if (ptrace(PT_IO, pid, (caddr_t)&iod, 0) == -1)
- return -UNW_EINVAL;
- if (!write)
- Debug (16, "mem[%lx] -> %lx\n", (long) addr, (long) *val);
- return 0;
- }
- #else
- #error Fix me
- #endif
|