[binutils-gdb] Fix tag_ctl register size in the core file.

[Luis Machado]

https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=0a3b55a669ecde094afde207ba57ce478f9e1f6b

commit 0a3b55a669ecde094afde207ba57ce478f9e1f6b
Author: Luis Machado <luis.machado@linaro.org>
Date:   Wed Jun 23 14:27:14 2021 -0300

    Fix tag_ctl register size in the core file.
    
    This register should be 64 bits in size, but the current code only saves
    32 bits. This is due to an early assumption that tag_ctl would be 32 bits
    in size.
    
    gdb/ChangeLog:
    
    2021-06-28  Luis Machado  <luis.machado@linaro.org>
    
            * aarch64-linux-tdep.c
            (aarch64_linux_iterate_over_regset_sections): Update tag_ctl register
            size.
            * aarch64-linux-tdep.h (AARCH64_LINUX_SIZEOF_MTE_REGSET): Set to
            8 and update comments.

Diff:
---
 gdb/ChangeLog            | 8 ++++++++
 gdb/aarch64-linux-tdep.c | 2 +-
 gdb/aarch64-linux-tdep.h | 4 ++--
 3 files changed, 11 insertions(+), 3 deletions(-)

diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index 2c4719781aa..0d80f3dda0b 100644
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,3 +1,11 @@
+2021-06-28  Luis Machado  <luis.machado@linaro.org>
+
+	* aarch64-linux-tdep.c
+	(aarch64_linux_iterate_over_regset_sections): Update tag_ctl register
+	size.
+	* aarch64-linux-tdep.h (AARCH64_LINUX_SIZEOF_MTE_REGSET): Set to
+	8 and update comments.
+
 2021-06-28  Simon Marchi  <simon.marchi@polymtl.ca>
 
 	* gdbarch.sh (struct gdbarch_info): Initialize fields, add
diff --git a/gdb/aarch64-linux-tdep.c b/gdb/aarch64-linux-tdep.c
index 9602fc4b29a..d541c6a32d0 100644
--- a/gdb/aarch64-linux-tdep.c
+++ b/gdb/aarch64-linux-tdep.c
@@ -735,7 +735,7 @@ aarch64_linux_iterate_over_regset_sections (struct gdbarch *gdbarch,
       /* Create this on the fly in order to handle the variable location.  */
       const struct regcache_map_entry mte_regmap[] =
 	{
-	  { 1, tdep->mte_reg_base, 4},
+	  { 1, tdep->mte_reg_base, 8},
 	  { 0 }
 	};
 
diff --git a/gdb/aarch64-linux-tdep.h b/gdb/aarch64-linux-tdep.h
index 62a6da83494..0c731ca470b 100644
--- a/gdb/aarch64-linux-tdep.h
+++ b/gdb/aarch64-linux-tdep.h
@@ -36,8 +36,8 @@
 /* The pauth regset consists of 2 X sized registers.  */
 #define AARCH64_LINUX_SIZEOF_PAUTH (2 * X_REGISTER_SIZE)
 
-/* The MTE regset consists of a 32-bit register.  */
-#define AARCH64_LINUX_SIZEOF_MTE_REGSET (4)
+/* The MTE regset consists of a 64-bit register.  */
+#define AARCH64_LINUX_SIZEOF_MTE_REGSET (8)
 
 extern const struct regset aarch64_linux_gregset;
 extern const struct regset aarch64_linux_fpregset;