From 6dc0ebde59dfb73eae507ced718bafa54023bf33 Mon Sep 17 00:00:00 2001 From: Alan Hayward Date: Fri, 22 Mar 2019 09:58:42 +0000 Subject: AArch64: Add pointer authentication feature Pointer Authentication is a new feature in AArch64 v8.3-a. When enabled in the compiler, function return addresses will be mangled by the kernel. Add register description xml and wire up to aarch64_linux_read_description. This description includes the two pauth user registers. Nothing yet uses the feature - that is added in later patches. gdb/ChangeLog: * aarch64-linux-nat.c (aarch64_linux_nat_target::read_description): Add pauth param. * aarch64-linux-tdep.c (aarch64_linux_core_read_description): Likewise. * aarch64-tdep.c (struct target_desc): Add in pauth. (aarch64_read_description): Add pauth param. (aarch64_gdbarch_init): Likewise. * aarch64-tdep.h (aarch64_read_description): Likewise. * arch/aarch64.c (aarch64_create_target_description): Likewise. * arch/aarch64.h (aarch64_create_target_description): Likewise. * features/Makefile: Add new files. * features/aarch64-pauth.c: New file. * features/aarch64-pauth.xml: New file. gdb/doc/ChangeLog: * gdb.texinfo: Describe pauth feature. gdb/gdbserver/ChangeLog: * linux-aarch64-ipa.c (get_ipa_tdesc): Add pauth param. (initialize_low_tracepoint): Likewise. * linux-aarch64-low.c (aarch64_arch_setup): Likewise. * linux-aarch64-tdesc-selftest.c (aarch64_tdesc_test): Likewise. * linux-aarch64-tdesc.c (struct target_desc): Likewise. (aarch64_linux_read_description): Likewise. * linux-aarch64-tdesc.h (aarch64_linux_read_description): Likewise. --- gdb/doc/ChangeLog | 5 +++++ gdb/doc/gdb.texinfo | 3 +++ 2 files changed, 8 insertions(+) (limited to 'gdb/doc') diff --git a/gdb/doc/ChangeLog b/gdb/doc/ChangeLog index 447d74e..1f41498 100644 --- a/gdb/doc/ChangeLog +++ b/gdb/doc/ChangeLog @@ -1,3 +1,8 @@ +2019-03-22 Alan Hayward + Jiong Wang + + * gdb.texinfo (AArch64 Features): Describe pauth feature. + 2019-03-20 Tom Tromey * python.texi (Selecting Pretty-Printers): Use @defvar for diff --git a/gdb/doc/gdb.texinfo b/gdb/doc/gdb.texinfo index 271739b..4c1d5e8 100644 --- a/gdb/doc/gdb.texinfo +++ b/gdb/doc/gdb.texinfo @@ -43162,6 +43162,9 @@ The @samp{org.gnu.gdb.aarch64.sve} feature is optional. If present, it should contain registers @samp{z0} through @samp{z31}, @samp{p0} through @samp{p15}, @samp{ffr} and @samp{vg}. +The @samp{org.gnu.gdb.aarch64.pauth} feature is optional. If present, +it should contain registers @samp{pauth_dmask} and @samp{pauth_cmask}. + @node ARC Features @subsection ARC Features @cindex target descriptions, ARC Features -- cgit v1.1