Please note that the version 2 ESD buffer has been significantly
changed from the Version 1 buffer.
Field Field Off Leng Description
Name Type set
IEWBESD Binder ESD buffer, Version 2
ESDH_BUFFER_ID Char 0 8 Buffer identifier "IEWBESD"
ESDH_BUFFER_LENG Binary 8 4 Length of the buffer,
including the header
ESDH_VERSION Binary 12 1 Version identifier (Constant 2)
*** RESERVED *** Binary 13 3 Reserved, must be zeros
ESDH_ENTRY_LENG Binary 16 4 Length of each entry
ESDH_ENTRY_COUNT Binary 20 4 Number of entries in the buffer
*** RESERVED *** Binary 24 8 Reserved
ESDH_ENTRY_ORIGIN 32 First ESD entry
ESD_ENTRY ESD entry
ESD_TYPE Char 0 2 ESD Type
C' ' Null Entry
C'SD' Control Section
C'LD' Label Definition
C'ER' External Reference
C'PR' Part Reference
C'PD' Part Definition
C'ED' Element Definition
ESD_TYPE_QUAL Char 2 2 ESD Type Qualifier
C' ' (no qualification)
C'SD' Section Definition (SD)
C'CM' Common (SD)
C'ST' Segment Table (SD)
C'ET' Entry Table (SD)
C'PC' Unnamed Section (SD)
C'PR' Part Reference (PR, PD)
C'PD' Part Definition (PR, PD)
C'ER' External Reference (ER)
C'WX' Weak Reference (ER)
ESD_NAME_SPACE Binary 4 1 Name Space for symbols
X'00' Section names
X'01' Labels and references (LD, ER)
X'02' Pseudoregisters (PR, PD)
X'03' Parts (PR, PD) or ED record for
merge class
X'04'-x'07' Reserved
ESD_SCOPE Char 5 1 Scope of Name
' ' Not applicable
'S' Section (Types SD/private,ST,ET)
'M' Module (Types SD/CSECT,LD,
ER/weak,CM,PR,DS,PD)
'L' Library (Type ER/strong)
ESD_NAME Name 6 6 Symbol represented by ESD record
ESD_NAME_CHARS Binary 6 2 length of name in bytes
ESD_NAME_PTR Pointer 8 4 pointer to name string
*** RESERVED *** Char 12 2 Reserved
1 ESD_RES_SECTION Name 14 6 Name of containing section
ESD_RESIDENT_CHARS Binary 14 2 length of name in bytes
ESD_RESIDENT_PTR Pointer 16 4 pointer to name string
ESD_LENG Binary 20 4 Length of defined element
(ED, PD, PR)
ESD_ALIGN Binary 24 1 Alignment specification from
language processor. Indicates
Alignment of section contribution
within class segment (ED, PD, PR)
X'00' Byte alignment (PD, PR)
X'01' Halfword (PD, PR)
X'02' Fullword (PD, PR)
X'03' Doubleword (PD, PR, ED)
X'04' Quadword (PR, PD, ED)
X'0C' 4K page (ED)
Field Field Off Leng Description
Name Type set
ESD_USABILITY Binary 25 1 Reusability of Section (SD)
X'00' Unspecified
X'01' Nonreusable
X'02' Reusable
X'03' Reentrant
X'04' Refreshable
ESD_AMODE Bit 26 1 Addressing Mode for Section or
label (SD, LD)
X'00' Unspecified
X'01' AMODE 24
X'02' AMODE 31
X'03' AMODE ANY (24 or 31)
X'04' AMODE MIN
ESD_RMODE Bit 27 1 Residence Mode for class element
(ED)
X'01' RMODE 24
X'03' RMODE ANY (24 or 31)
ESD_RECORD_FMT Binary 28 2 Record format for class (ED)
H'1' Byte stream
H'>1' Fixed length records
Field Field Off Leng Description
Name Type set
ESD_LOAD_FLAGS Bit 30 1 Load Attributes (ED)
1... .... Read-only
.1.. .... Do not load with module
..1. .... Moveable
...1 .... Shareable
.... 1111 ** Reserved **
ESD_BIND_FLAGS Bit 31 1 Bind Attributes
2 1... .... Binder generated (SD, ED, LD)
2 .1.. .... No class data available (ED)
2 ..1. .... Variable length records (ED)
...1 .... Descriptive data (not text) (ED)
.... 1111 ** Reserved **
ESD_BIND_CNTL Bit 32 1 Bind control information
1 1... .... Removable class(ED)
1 .x.. .... ** Reserved **
1 ..xx .... Binding method (ED)
1 ..00 .... CAT (Catenated text)
1 ..01 .... MRG (Merged parts)
1 ..1x .... ** Reserved **
*** RESERVED *** Char 33 1 Reserved
ESD_XATTR_CLASS Name 34 6 Extended attributes class
(LD, ER)
ESD_XATTR_CLASS_CHARS
Binary 34 2 length of name in bytes
ESD_XATTR_CLASS_PTR
Pointer 36 4 pointer to name string
ESD_XATTR_OFFSET Binary 40 4 Extended attributes element offset
(LD, ER)
2 ESD_SEGMENT Binary 44 2 Overlay segment number (SD)
2 ESD_REGION Binary 46 2 Overlay region number (SD)
ESD_SIGNATURE Char 48 8 Interface signature
2 ESD_AUTOCALL Binary 56 1 Autocall specification (ER)
x... .... ** Reserved **
.1.. .... Entry in LPA. If ON, name is
an alias.
..xx xxxx ** Reserved **
2 ESD_STATUS Bit 57 1 Resolution status (ER)
1... .... Symbol is resolved
.1.. .... Processed by autocall
..xx xxxx Reserved
2 ESD_TGT_SECTION Name 58 6 Target section (ER)
ESD_TARGET_CHARS Binary 58 2 length of name in bytes
ESD_TARGET_PTR Pointer 60 4 pointer to name string
*** RESERVED *** Char 64 2 Reserved
ESD_RES_CLASS Name 66 6 Name of containing class
(LD, PD) or target class (ER)
ESD_RES_CLASS_CHARS
Binary 66 2 length of name in bytes
ESD_RES_CLASS_PTR
Pointer 68 4 pointer to name string
3 ESD_ELEM_OFFSET Binary 72 4 Offset within class element
(LD, ER)
2 ESD_CLASS_OFFSET Binary 76 4 Offset within class segment
(ED, LD, PD, ER)
Note: - This entry is ignored on input to the binder.
- Recalculated by the binder.
- Calculated on the ED and ER records, required input to LD.