[PATCH v1] Synchronize siginfo type described in GDB with the kernel and glibc ones.

Walfred Tedeschi
2015-10-26T12:55:22Z

New kernel and glibc patches have introduced fields in the
segmentation fault fields.

Kernel patch:
http://git.kernel.org/cgit/linux/kernel/git/tip/tip.git/commit/?id=ee1b58d36aa1b5a79eaba11f5c3633c88231da83

Glibc patch:
http://repo.or.cz/w/glibc.git/commit/d4358b51c26a634eb885955aea06cad26af6f696

2015-07-21 Walfred Tedeschi <walfred.tedeschi@intel.com>

* linux-tdep.c (linux_get_siginfo_type): Add the _addr_bnd
structure to the siginfo.

---
gdb/linux-tdep.c | 12 ++++++++++--
1 file changed, 10 insertions(+), 2 deletions(-)

diff --git a/gdb/linux-tdep.c b/gdb/linux-tdep.c
index 7c24eaa..de773ae 100644
--- a/gdb/linux-tdep.c
+++ b/gdb/linux-tdep.c
@@ -248,10 +248,10 @@ static struct type *
linux_get_siginfo_type (struct gdbarch *gdbarch)
{
struct linux_gdbarch_data *linux_gdbarch_data;
- struct type *int_type, *uint_type, *long_type, *void_ptr_type;
+ struct type *int_type, *uint_type, *long_type, *void_ptr_type, *short_type;
struct type *uid_type, *pid_type;
struct type *sigval_type, *clock_type;
- struct type *siginfo_type, *sifields_type;
+ struct type *siginfo_type, *sifields_type, *sigfault_bnd_fields;
struct type *type;

linux_gdbarch_data = get_linux_gdbarch_data (gdbarch);
@@ -264,6 +264,8 @@ linux_get_siginfo_type (struct gdbarch *gdbarch)
1, "unsigned int");
long_type = arch_integer_type (gdbarch, gdbarch_long_bit (gdbarch),
0, "long");
+ short_type = arch_integer_type (gdbarch, gdbarch_long_bit (gdbarch),
+ 0, "short");
void_ptr_type = lookup_pointer_type (builtin_type (gdbarch)->builtin_void);

/* sival_t */
@@ -339,6 +341,12 @@ linux_get_siginfo_type (struct gdbarch *gdbarch)
/* _sigfault */
type = arch_composite_type (gdbarch, NULL, TYPE_CODE_STRUCT);
append_composite_type_field (type, "si_addr", void_ptr_type);
+ append_composite_type_field (type, "_addr_lsb", short_type);
+
+ sigfault_bnd_fields = arch_composite_type (gdbarch, NULL, TYPE_CODE_STRUCT);
+ append_composite_type_field (sigfault_bnd_fields, "_lower", void_ptr_type);
+ append_composite_type_field (sigfault_bnd_fields, "_upper", void_ptr_type);
+ append_composite_type_field (type, "_addr_bnd", sigfault_bnd_fields);
append_composite_type_field (sifields_type, "_sigfault", type);

/* _sigpoll */
--
2.1.4