coredump: support coredump save to block device when crash

Signed-off-by: anjiahao <anjiahao@xiaomi.com>

include/nuttx/binfmt/binfmt.h

@@ -29,6 +29,7 @@
 
 #include <spawn.h>
 #include <sys/types.h>
+#include <sys/utsname.h>
 
 #include <nuttx/sched.h>
 #include <nuttx/streams.h>
@@ -38,7 +39,8 @@
  * Pre-processor Definitions
  ****************************************************************************/
 
-#define BINFMT_NALLOC 4
+#define BINFMT_NALLOC     4
+#define COREDUMP_MAGIC    0x434f5245
 
 /****************************************************************************
  * Public Types
@@ -138,6 +140,16 @@ struct binfmt_s
                        pid_t pid);
 };
 
+/* Coredump information for block header */
+
+struct coredump_info_s
+{
+  uint32_t       magic;
+  struct utsname name;
+  time_t         time;
+  size_t         size;
+};
+
 /****************************************************************************
  * Public Data
  ****************************************************************************/

include/nuttx/memoryregion.h

@@ -63,4 +63,34 @@ ssize_t parse_memory_region(FAR const char *format,
                             FAR struct memory_region_s *region,
                             size_t num);
 
+/****************************************************************************
+ * Name: alloc_memory_region
+ *
+ * Input Parameters:
+ *   format - The format string to parse. <start>,<end>,<flags>,...
+ *            start - The start address of the memory region
+ *            end   - The end address of the memory region
+ *            flags - Readable 0x1, writable 0x2, executable 0x4
+ *  example: 0x1000,0x2000,0x1,0x2000,0x3000,0x3,0x3000,0x4000,0x7
+ *
+ * Return:
+ *   The parsed memory region list on success; NULL on failure.
+ *   The boundary value of the memory region is zero.
+ *   The return value need free by caller.
+ *
+ ****************************************************************************/
+
+FAR struct memory_region_s *
+alloc_memory_region(FAR const char *format);
+
+/****************************************************************************
+ * Name: free_memory_region
+ *
+ * Input Parameters:
+ *   region - The memory region list to free.
+ *
+ ****************************************************************************/
+
+void free_memory_region(FAR struct memory_region_s *region);
+
 #endif /* __INCLUDE_MEMORYREGION_H */