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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/arch | |
| parent | 968aa7ae389d9e6cecb5fda6826bf889ed959fce (diff) | |
| download | fsf-binutils-gdb-6dc0ebde59dfb73eae507ced718bafa54023bf33.zip fsf-binutils-gdb-6dc0ebde59dfb73eae507ced718bafa54023bf33.tar.gz fsf-binutils-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/arch')
| -rw-r--r-- | gdb/arch/aarch64.c | 6 | ||||
| -rw-r--r-- | gdb/arch/aarch64.h | 5 |
2 files changed, 8 insertions, 3 deletions
diff --git a/gdb/arch/aarch64.c b/gdb/arch/aarch64.c index d36ed9d..11a15dd 100644 --- a/gdb/arch/aarch64.c +++ b/gdb/arch/aarch64.c @@ -22,11 +22,12 @@ #include "../features/aarch64-core.c" #include "../features/aarch64-fpu.c" #include "../features/aarch64-sve.c" +#include "../features/aarch64-pauth.c" /* See arch/aarch64.h. */ target_desc * -aarch64_create_target_description (uint64_t vq) +aarch64_create_target_description (uint64_t vq, bool pauth_p) { target_desc *tdesc = allocate_target_description (); @@ -43,5 +44,8 @@ aarch64_create_target_description (uint64_t vq) else regnum = create_feature_aarch64_sve (tdesc, regnum, vq); + if (pauth_p) + regnum = create_feature_aarch64_pauth (tdesc, regnum); + return tdesc; } diff --git a/gdb/arch/aarch64.h b/gdb/arch/aarch64.h index 807a4a6..4fe6d02 100644 --- a/gdb/arch/aarch64.h +++ b/gdb/arch/aarch64.h @@ -24,9 +24,10 @@ /* Create the aarch64 target description. A non zero VQ value indicates both the presence of SVE and the Vector Quotient - the number of 128bit chunks in - an SVE Z register. */ + an SVE Z register. HAS_PAUTH_P indicates the presence of the PAUTH + feature. */ -target_desc *aarch64_create_target_description (uint64_t vq); +target_desc *aarch64_create_target_description (uint64_t vq, bool has_pauth_p); /* Register numbers of various important registers. Note that on SVE, the Z registers reuse the V register numbers and the V |