mirror of
https://sourceware.org/git/binutils-gdb.git
synced 2025-01-18 12:24:38 +08:00
58afddc6c7
The M7 processor supports an Application Data Integrity (ADI) feature that detects invalid data accesses. When software allocates data, it chooses a 4-bit version number, sets the version in the upper 4 bits of the 64-bit pointer to that data, and stores the 4-bit version in every cacheline of the object. Hardware saves the latter in spare bits in the cache and memory hierarchy. On each load and store, the processor compares the upper 4 VA (virtual address) bits to the cacheline's version. If there is a mismatch, the processor generates a version mismatch trap which can be either precise or disrupting. The trap is an error condition which the kernel delivers to the process as a SIGSEGV signal. The upper 4 bits of the VA represent a version and are not part of the true address. The processor clears these bits and sign extends bit 59 to generate the true address. Note that 32-bit applications cannot use ADI. This patch adds ADI support in gdb which allows the user to examine current version tags and assign new version tags in the program. It also catches and reports precise or disrupting memory corruption traps. gdb/ChangeLog: 2017-08-07 Weimin Pan <weimin.pan@oracle.com> * sparc64-tdep.h: (adi_normalize_address): New export. * sparc-nat.h: (open_adi_tag_fd): New export. * sparc64-linux-nat.c: (open_adi_tag_fd): New function. * sparc64-linux-tdep.c: (SEGV_ACCADI, SEGV_ADIDERR, SEGV_ADIPERR) New defines. (sparc64_linux_handle_segmentation_fault): New function. (sparc64_linux_init_abi): Register sparc64_linux_handle_segmentation_fault * sparc64-tdep.c: Include cli-utils.h,gdbcmd.h,auxv.h. (sparc64_addr_bits_remove): New function. (sparc64_init_abi): Register sparc64_addr_bits_remove. (MAX_PROC_NAME_SIZE): New macro. (AT_ADI_BLKSZ, AT_ADI_NBITS, AT_ADI_UEONADI) New defines. (sparc64adilist): New variable. (adi_proc_list): New variable. (find_adi_info): New function. (add_adi_info): New function. (get_adi_info_proc): New function. (get_adi_info): New function. (info_adi_command): New function. (read_maps_entry): New function. (adi_available): New function. (adi_normalize_address): New function. (adi_align_address): New function. (adi_convert_byte_count): New function. (adi_tag_fd): New function. (adi_is_addr_mapped): New function. (adi_read_versions): New function. (adi_write_versions): New function. (adi_print_versions): New function. (do_examine): New function. (do_assign): New function. (adi_examine_command): New function. (adi_assign_command): New function. (_initialize_sparc64_adi_tdep): New function. gdb/doc/ChangeLog: 2017-08-07 Weimin Pan <weimin.pan@oracle.com> * gdb.texinfo (Architectures): Add new Sparc64 section to document ADI support. * NEWS: Add "adi examine" and "adi assign" commands. gdb/testsuite/ChangeLog: 2017-08-07 Weimin Pan <weimin.pan@oracle.com> * gdb.arch/sparc64-adi.exp: New file. * gdb.arch/sparc64-adi.c: New file. |
||
---|---|---|
bfd | ||
binutils | ||
config | ||
cpu | ||
elfcpp | ||
etc | ||
gas | ||
gdb | ||
gold | ||
gprof | ||
include | ||
intl | ||
ld | ||
libdecnumber | ||
libiberty | ||
opcodes | ||
readline | ||
sim | ||
texinfo | ||
zlib | ||
.cvsignore | ||
.gitattributes | ||
.gitignore | ||
ChangeLog | ||
compile | ||
config-ml.in | ||
config.guess | ||
config.rpath | ||
config.sub | ||
configure | ||
configure.ac | ||
COPYING | ||
COPYING3 | ||
COPYING3.LIB | ||
COPYING.LIB | ||
COPYING.LIBGLOSS | ||
COPYING.NEWLIB | ||
depcomp | ||
djunpack.bat | ||
install-sh | ||
libtool.m4 | ||
lt~obsolete.m4 | ||
ltgcc.m4 | ||
ltmain.sh | ||
ltoptions.m4 | ||
ltsugar.m4 | ||
ltversion.m4 | ||
MAINTAINERS | ||
Makefile.def | ||
Makefile.in | ||
Makefile.tpl | ||
makefile.vms | ||
missing | ||
mkdep | ||
mkinstalldirs | ||
move-if-change | ||
README | ||
README-maintainer-mode | ||
setup.com | ||
src-release.sh | ||
symlink-tree | ||
ylwrap |
README for GNU development tools This directory contains various GNU compilers, assemblers, linkers, debuggers, etc., plus their support routines, definitions, and documentation. If you are receiving this as part of a GDB release, see the file gdb/README. If with a binutils release, see binutils/README; if with a libg++ release, see libg++/README, etc. That'll give you info about this package -- supported targets, how to use it, how to report bugs, etc. It is now possible to automatically configure and build a variety of tools with one command. To build all of the tools contained herein, run the ``configure'' script here, e.g.: ./configure make To install them (by default in /usr/local/bin, /usr/local/lib, etc), then do: make install (If the configure script can't determine your type of computer, give it the name as an argument, for instance ``./configure sun4''. You can use the script ``config.sub'' to test whether a name is recognized; if it is, config.sub translates it to a triplet specifying CPU, vendor, and OS.) If you have more than one compiler on your system, it is often best to explicitly set CC in the environment before running configure, and to also set CC when running make. For example (assuming sh/bash/ksh): CC=gcc ./configure make A similar example using csh: setenv CC gcc ./configure make Much of the code and documentation enclosed is copyright by the Free Software Foundation, Inc. See the file COPYING or COPYING.LIB in the various directories, for a description of the GNU General Public License terms under which you can copy the files. REPORTING BUGS: Again, see gdb/README, binutils/README, etc., for info on where and how to report problems.