You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
78 lines
2.1 KiB
78 lines
2.1 KiB
/* Fetch live process registers from TID.
|
|
This file is part of elfutils.
|
|
|
|
This file is free software; you can redistribute it and/or modify
|
|
it under the terms of either
|
|
|
|
* the GNU Lesser General Public License as published by the Free
|
|
Software Foundation; either version 3 of the License, or (at
|
|
your option) any later version
|
|
|
|
or
|
|
|
|
* the GNU General Public License as published by the Free
|
|
Software Foundation; either version 2 of the License, or (at
|
|
your option) any later version
|
|
|
|
or both in parallel, as here.
|
|
|
|
elfutils is distributed in the hope that it will be useful, but
|
|
WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
General Public License for more details.
|
|
|
|
You should have received copies of the GNU General Public License and
|
|
the GNU Lesser General Public License along with this program. If
|
|
not, see <http://www.gnu.org/licenses/>. */
|
|
|
|
#ifdef HAVE_CONFIG_H
|
|
# include <config.h>
|
|
#endif
|
|
|
|
#include "system.h"
|
|
#include <assert.h>
|
|
#if defined __riscv && defined __linux__
|
|
# include <sys/uio.h>
|
|
# include <sys/procfs.h>
|
|
# include <sys/ptrace.h>
|
|
#endif
|
|
|
|
#define BACKEND riscv_
|
|
#include "libebl_CPU.h"
|
|
|
|
bool
|
|
riscv_set_initial_registers_tid (pid_t tid __attribute__ ((unused)),
|
|
ebl_tid_registers_t *setfunc __attribute__ ((unused)),
|
|
void *arg __attribute__ ((unused)))
|
|
{
|
|
#if !defined __riscv || !defined __linux__
|
|
return false;
|
|
#else /* __riscv */
|
|
|
|
/* General registers. */
|
|
elf_gregset_t gregs;
|
|
struct iovec iovec;
|
|
iovec.iov_base = &gregs;
|
|
iovec.iov_len = sizeof (gregs);
|
|
if (ptrace (PTRACE_GETREGSET, tid, NT_PRSTATUS, &iovec) != 0)
|
|
return false;
|
|
|
|
/* X0 is constant 0. */
|
|
Dwarf_Word zero = 0;
|
|
if (! setfunc (0, 1, &zero, arg))
|
|
return false;
|
|
|
|
/* X1..X31. */
|
|
if (! setfunc (1, 32, (Dwarf_Word *) &gregs[1], arg))
|
|
return false;
|
|
|
|
/* PC. */
|
|
if (! setfunc (-1, 1, (Dwarf_Word *) &gregs[0], arg))
|
|
return false;
|
|
|
|
/* FP registers not yet supported. */
|
|
|
|
return true;
|
|
#endif /* __riscv */
|
|
}
|