[PATCH V2 2/5] Preparation for new siginfo on Linux.

Walfred Tedeschi
2015-12-17T16:57:04Z

First add new structure and function to allow architecture customization
for the siginfo structure.

2015-12-15 Walfred Tedeschi <walfred.tedeschi@intel.com>

* linux-tdep.h (linux_siginfo_extra_field_values): New enum values.
(linux_siginfo_extra_fields): New enum type.
* linux-tdep.c (linux_get_siginfo_type_with_fields): New function.
(linux_get_siginfo_type): Uses new function.

---
gdb/linux-tdep.c | 16 +++++++++++++---
gdb/linux-tdep.h | 9 +++++++++
2 files changed, 22 insertions(+), 3 deletions(-)

diff --git a/gdb/linux-tdep.c b/gdb/linux-tdep.c
index 000efc8..a7e85c5 100644
--- a/gdb/linux-tdep.c
+++ b/gdb/linux-tdep.c
@@ -243,11 +243,12 @@ get_linux_inferior_data (void)
return info;
}

-/* This function is suitable for architectures that don't
- extend/override the standard siginfo structure. */
+/* This function is suitable for architectures that
+ extend/override the standard siginfo in an specific way. */

static struct type *
-linux_get_siginfo_type (struct gdbarch *gdbarch)
+linux_get_siginfo_type_with_fields (struct gdbarch *gdbarch,
+ linux_siginfo_extra_fields extra_fields)
{
struct linux_gdbarch_data *linux_gdbarch_data;
struct type *int_type, *uint_type, *long_type, *void_ptr_type;
@@ -364,6 +365,15 @@ linux_get_siginfo_type (struct gdbarch *gdbarch)
return siginfo_type;
}

+/* This function is suitable for architectures that don't
+ extend/override the standard siginfo structure. */
+
+static struct type *
+linux_get_siginfo_type (struct gdbarch *gdbarch)
+{
+ return linux_get_siginfo_type_with_fields (gdbarch, 0);
+}
+
/* Return true if the target is running on uClinux instead of normal
Linux kernel. */

diff --git a/gdb/linux-tdep.h b/gdb/linux-tdep.h
index 9beb6f6..c0c9d91 100644
--- a/gdb/linux-tdep.h
+++ b/gdb/linux-tdep.h
@@ -24,6 +24,15 @@

struct regcache;

+/* Enum used to define which kind of siginfo is used by the architecture. */
+enum linux_siginfo_extra_field_values
+{
+ LINUX_SIGINFO_FIELD_ADDR_BND = 1
+};
+
+/* Defines a type for the values defined in linux_siginfo_extra_field_values. */
+DEF_ENUM_FLAGS_TYPE (enum linux_siginfo_extra_field_values, linux_siginfo_extra_fields);
+
typedef char *(*linux_collect_thread_registers_ftype) (const struct regcache *,
ptid_t,
bfd *, char *, int *,
--
2.1.4