diff options
Diffstat (limited to 'backends')
| -rw-r--r-- | backends/ChangeLog | 7 | ||||
| -rw-r--r-- | backends/Makefile.am | 2 | ||||
| -rw-r--r-- | backends/arm_init.c | 6 | ||||
| -rw-r--r-- | backends/arm_initreg.c | 58 |
4 files changed, 71 insertions, 2 deletions
diff --git a/backends/ChangeLog b/backends/ChangeLog index c8e2b301..212b9f6d 100644 --- a/backends/ChangeLog +++ b/backends/ChangeLog @@ -1,3 +1,10 @@ +2014-01-26 Mark Wielaard <mjw@redhat.com> + + * Makefile.am (arm_SRCS): Add arm_initreg.c. + * arm_init.c (arm_init): Define frame_nregs and hook + set_initial_registers_tid. + * arm_initreg.c: New file. + 2014-01-25 Mark Wielaard <mjw@redhat.com> * arm_cfi.c (arm_abi_cfi): Restore SP (r13) from CFA. diff --git a/backends/Makefile.am b/backends/Makefile.am index 90e93a88..4129eee5 100644 --- a/backends/Makefile.am +++ b/backends/Makefile.am @@ -78,7 +78,7 @@ libebl_alpha_pic_a_SOURCES = $(alpha_SRCS) am_libebl_alpha_pic_a_OBJECTS = $(alpha_SRCS:.c=.os) arm_SRCS = arm_init.c arm_symbol.c arm_regs.c arm_corenote.c \ - arm_auxv.c arm_attrs.c arm_retval.c arm_cfi.c + arm_auxv.c arm_attrs.c arm_retval.c arm_cfi.c arm_initreg.c libebl_arm_pic_a_SOURCES = $(arm_SRCS) am_libebl_arm_pic_a_OBJECTS = $(arm_SRCS:.c=.os) diff --git a/backends/arm_init.c b/backends/arm_init.c index cf661cea..14b26356 100644 --- a/backends/arm_init.c +++ b/backends/arm_init.c @@ -1,5 +1,5 @@ /* Initialization of Arm specific backend library. - Copyright (C) 2002, 2005, 2009, 2013 Red Hat, Inc. + Copyright (C) 2002, 2005, 2009, 2013, 2014 Red Hat, Inc. This file is part of elfutils. Written by Ulrich Drepper <drepper@redhat.com>, 2002. @@ -64,5 +64,9 @@ arm_init (elf, machine, eh, ehlen) HOOK (eh, return_value_location); HOOK (eh, abi_cfi); + /* We only unwind the core integer registers. */ + eh->frame_nregs = 16; + HOOK (eh, set_initial_registers_tid); + return MODVERSION; } diff --git a/backends/arm_initreg.c b/backends/arm_initreg.c new file mode 100644 index 00000000..c03146eb --- /dev/null +++ b/backends/arm_initreg.c @@ -0,0 +1,58 @@ +/* Fetch live process registers from TID. + Copyright (C) 2014 Red Hat, Inc. + 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 + +#if defined __arm__ +# include <sys/types.h> +# include <sys/user.h> +# include <sys/ptrace.h> +#endif + +#define BACKEND arm_ +#include "libebl_CPU.h" + +bool +arm_set_initial_registers_tid (pid_t tid __attribute__ ((unused)), + ebl_tid_registers_t *setfunc __attribute__ ((unused)), + void *arg __attribute__ ((unused))) +{ +#if ! defined __arm__ + return false; +#else + struct user_regs user_regs; + if (ptrace (PTRACE_GETREGS, tid, NULL, &user_regs) != 0) + return false; + Dwarf_Word dwarf_regs[16]; + for (int i = 0; i < 16; i++) + dwarf_regs[i] = user_regs.uregs[i]; + return setfunc (0, 16, dwarf_regs, arg); +#endif +} |