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[PATCH v2 8/8] AArch64: Read pauth section from core files
- From: Alan Hayward <Alan dot Hayward at arm dot com>
- To: "gdb-patches at sourceware dot org" <gdb-patches at sourceware dot org>
- Cc: nd <nd at arm dot com>, Alan Hayward <Alan dot Hayward at arm dot com>
- Date: Wed, 6 Mar 2019 13:33:37 +0000
- Subject: [PATCH v2 8/8] AArch64: Read pauth section from core files
- References: <20190306133325.2531-1-alan.hayward@arm.com>
2019-03-06 Alan Hayward <alan.hayward@arm.com>
Jiong Wang <jiong.wang@arm.com>
* aarch64-linux-tdep.c
(aarch64_linux_iterate_over_regset_sections): Check for pauth
section.
* aarch64-linux-tdep.h (AARCH64_LINUX_SIZEOF_PAUTH): New define.
---
gdb/aarch64-linux-tdep.c | 20 ++++++++++++++++++++
gdb/aarch64-linux-tdep.h | 3 +++
2 files changed, 23 insertions(+)
diff --git a/gdb/aarch64-linux-tdep.c b/gdb/aarch64-linux-tdep.c
index 5eeafa456c..32c5eefa35 100644
--- a/gdb/aarch64-linux-tdep.c
+++ b/gdb/aarch64-linux-tdep.c
@@ -627,6 +627,26 @@ aarch64_linux_iterate_over_regset_sections (struct gdbarch *gdbarch,
else
cb (".reg2", AARCH64_LINUX_SIZEOF_FPREGSET, AARCH64_LINUX_SIZEOF_FPREGSET,
&aarch64_linux_fpregset, NULL, cb_data);
+
+
+ if (tdep->has_pauth ())
+ {
+ /* Create this on the fly in order to handle the variable location. */
+ const struct regcache_map_entry pauth_regmap[] =
+ {
+ { 2, AARCH64_PAUTH_DMASK_REGNUM (tdep->pauth_reg_base), 8},
+ { 0 }
+ };
+
+ const struct regset aarch64_linux_pauth_regset =
+ {
+ pauth_regmap, regcache_supply_regset, regcache_collect_regset
+ };
+
+ cb (".reg-aarch-pauth", AARCH64_LINUX_SIZEOF_PAUTH,
+ AARCH64_LINUX_SIZEOF_PAUTH, &aarch64_linux_pauth_regset,
+ "pauth registers", cb_data);
+ }
}
/* Implement the "core_read_description" gdbarch method. */
diff --git a/gdb/aarch64-linux-tdep.h b/gdb/aarch64-linux-tdep.h
index 244095cbca..a8c9443cbe 100644
--- a/gdb/aarch64-linux-tdep.h
+++ b/gdb/aarch64-linux-tdep.h
@@ -33,6 +33,9 @@
alignment. */
#define AARCH64_LINUX_SIZEOF_FPREGSET (33 * V_REGISTER_SIZE)
+/* The pauth regset consists of 2 X sized registers. */
+#define AARCH64_LINUX_SIZEOF_PAUTH (2 * X_REGISTER_SIZE)
+
extern const struct regset aarch64_linux_gregset;
extern const struct regset aarch64_linux_fpregset;
--
2.17.2 (Apple Git-113)