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| author | Alan Hayward <alan.hayward@arm.com> | 2019-03-22 09:58:42 +0000 |
|---|---|---|
| committer | Alan Hayward <alan.hayward@arm.com> | 2019-03-22 09:58:42 +0000 |
| commit | 6dc0ebde59dfb73eae507ced718bafa54023bf33 (patch) | |
| tree | 9cc851b66b4b94d633e576f1b955edfe9b63d81c /gdb/aarch64-linux-nat.c | |
| parent | 968aa7ae389d9e6cecb5fda6826bf889ed959fce (diff) | |
| download | gdb-6dc0ebde59dfb73eae507ced718bafa54023bf33.zip gdb-6dc0ebde59dfb73eae507ced718bafa54023bf33.tar.gz gdb-6dc0ebde59dfb73eae507ced718bafa54023bf33.tar.bz2 | |
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.
Diffstat (limited to 'gdb/aarch64-linux-nat.c')
| -rw-r--r-- | gdb/aarch64-linux-nat.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/gdb/aarch64-linux-nat.c b/gdb/aarch64-linux-nat.c index 6f91e95..f58a41e 100644 --- a/gdb/aarch64-linux-nat.c +++ b/gdb/aarch64-linux-nat.c @@ -605,8 +605,9 @@ aarch64_linux_nat_target::read_description () ret = ptrace (PTRACE_GETREGSET, tid, NT_ARM_VFP, &iovec); if (ret == 0) return tdesc_arm_with_neon; - else - return aarch64_read_description (aarch64_sve_get_vq (tid)); + + /* pauth not yet supported. */ + return aarch64_read_description (aarch64_sve_get_vq (tid), false); } /* Convert a native/host siginfo object, into/from the siginfo in the |