diff --git a/include/nuttx/binfmt/ieee695.h b/include/nuttx/binfmt/ieee695.h
index 884049b7590..a459d4f3f30 100644
--- a/include/nuttx/binfmt/ieee695.h
+++ b/include/nuttx/binfmt/ieee695.h
@@ -239,7 +239,7 @@
 #define IEEE695_CMD_AS               0xe2 /* Assign Value to variable (ASvn) */
 #define IEEE695_CMD_IR               0xe3
 #define IEEE695_CMD_LR               0xe4
-#define IEEE695_CMD_SB               0xe5
+#define IEEE695_CMD_SB               0xe5 /* Set Current Section (SB) */
 #define IEEE695_CMD_ST               0xe6 /* Section Type (ST) */
 #define IEEE695_CMD_SA               0xe7 /* Section Alignment (SA) */
 #define IEEE695_CMD_NI               0xe8 /* Public (External) Symbol (NI) */
@@ -286,26 +286,26 @@
 #define IEEE695_ATTR_COMMENTS        55 /* Comments, string follows */
 #define IEEE695_ATTR_UNKNOWN         56 /* What is this? 1 byte follows */
 
-#define IEEE695_OBJFORMT_ABSOLUTE    1 /* Absolute (not relinkable) */
-#define IEEE695_OBJFORMT_RELOCATABLE 2 /* Relocatable */
-#define IEEE695_OBJFORMT_LOADABLE    3 /* Loadable */
-#define IEEE695_OBJFORMT_LIBRARY     4 /* Library */
+#define IEEE695_OBJFORMT_ABSOLUTE    1  /* Absolute (not relinkable) */
+#define IEEE695_OBJFORMT_RELOCATABLE 2  /* Relocatable */
+#define IEEE695_OBJFORMT_LOADABLE    3  /* Loadable */
+#define IEEE695_OBJFORMT_LIBRARY     4  /* Library */
 
-#define IEEE695_CASE_SENSITIVE       1 /* Treat all symbols as if they were upper case */
-#define IEEE695_CASE_INSENSITIVE     2 /* Do not change the case of symbols */
+#define IEEE695_CASE_SENSITIVE       1  /* Treat all symbols as if they were upper case */
+#define IEEE695_CASE_INSENSITIVE     2  /* Do not change the case of symbols */
 
-#define IEEE695_MEMORYMODEL_TINY     0 /* Code and data: Same single 64K segment */
-#define IEEE695_MEMORYMODEL_SMALL    1 /* Code and data: Each have a single 64K segment */
-#define IEEE695_MEMORYMODEL_MEDIUM   2 /* Data: Single 64K segment; Code: Multiple 64K segments */
-#define IEEE695_MEMORYMODEL_COMPACT  3 /* Data: Multiple 64K segments; Code: Single 64K segment */
-#define IEEE695_MEMORYMODEL_LARGE    4 /* Data and code: Both have multiple 64K segments */
-#define IEEE695_MEMORYMODEL_BIG      5 /* Code has multiple 64K segments with common "near" data area */
-#define IEEE695_MEMORYMODEL_HUGE     6 /* All large arrays and structures are in their own section */
+#define IEEE695_MEMORYMODEL_TINY     0  /* Code and data: Same single 64K segment */
+#define IEEE695_MEMORYMODEL_SMALL    1  /* Code and data: Each have a single 64K segment */
+#define IEEE695_MEMORYMODEL_MEDIUM   2  /* Data: Single 64K segment; Code: Multiple 64K segments */
+#define IEEE695_MEMORYMODEL_COMPACT  3  /* Data: Multiple 64K segments; Code: Single 64K segment */
+#define IEEE695_MEMORYMODEL_LARGE    4  /* Data and code: Both have multiple 64K segments */
+#define IEEE695_MEMORYMODEL_BIG      5  /* Code has multiple 64K segments with common "near" data area */
+#define IEEE695_MEMORYMODEL_HUGE     6  /* All large arrays and structures are in their own section */
 
-#define IEEE695_EXECSTATUS_SUCCESS   0 /* Success */
-#define IEEE695_EXECSTATUS_WARNINGS  1 /* Warning(s) */
-#define IEEE695_EXECSTATUS_ERRORS    2 /* Error(s) */
-#define IEEE695_EXECSTATUS_FATAL     3 /* Fatal error(s) */
+#define IEEE695_EXECSTATUS_SUCCESS   0  /* Success */
+#define IEEE695_EXECSTATUS_WARNINGS  1  /* Warning(s) */
+#define IEEE695_EXECSTATUS_ERRORS    2  /* Error(s) */
+#define IEEE695_EXECSTATUS_FATAL     3  /* Fatal error(s) */
 
 #define IEEE695_HOSTENVIRON_UNKNOWN  0
 #define IEEE695_HOSTENVIRON_VMS      1
@@ -313,6 +313,39 @@
 #define IEEE695_HOSTENVIRON_UNIX     3
 #define IEEE695_HOSTENVIRON_HPUX     4
 
+/* Symbol Type */
+
+#define IEEE695_SYMTYPE_UNKNOWN      0  /* Unspecified */
+#define IEEE695_SYMTYPE_BYTE         3  /* 8-bit data byte */
+#define IEEE695_SYMTYPE_SHORT        5  /* 16-bit short data word */
+#define IEEE695_SYMTYPE_LONG         7  /* 32-bit long data word */
+#define IEEE695_SYMTYPE_FLOAT        10 /* 32-bit floating point */
+#define IEEE695_SYMTYPE_DOUBLE       11 /* 64-bit floating point */
+#define IEEE695_SYMTYPE_FLOAT12      12 /* 10 or 12 byte floating point */
+#define IEEE695_SYMTYPE_ADDRESS      15 /* Instruction address */
+
+/* Symbol Attributes */
+
+#define IEEE695_SYMATTR_GLOBAL       8  /* Global compiler symbol */
+#define IEEE695_SYMATTR_CONSTANT     16 /* Constant (see additional attributes below */
+#define IEEE695_SYMATTR_STATIC       19 /* Static symbol generated by assembler */
+
+/* Constant Symbol Attributes.  Constant symbols have four additional arguments:
+ *
+ * 1. Symbol class
+ * 2. Public/local indicator (optional).  One means public.
+ * 3. Numeric value (optional)
+ * 4. String value (optional)
+ *
+ * Either 3 or 4 should be present, but not both.
+ */
+
+#define IEEE695_SYMCLASS_UNKNOWN     0  /* Unknown class */
+#define IEEE695_SYMCLASS_EQU         1  /* EQU constant */
+#define IEEE695_SYMCLASS_SET         2  /* SET constant */
+#define IEEE695_SYMCLASS_PASCAL      3  /* Pascal CONST constant */
+#define IEEE695_SYMCLASS_DEFINE      4  /* C #define constant */
+
 /* Helper Macros ********************************************************************/
 /* These macros extract un-aligned, little-endian values from the object file */