Section 1: General Information
21
TI
-
89 / TI
-
92 Plus Sierra C Assembler Reference Manual
Not for Distribution
Beta Version February 2, 2001
1.4.7.3. Symbols and Functions
For each function, a special symbol
.bf
is put between the function name and the
first local symbol of the function name in the symbol table. Correspondingly, a
special symbol
.ef
is put immediately after the last symbol of the function in the
symbol table. Associated with the
.bf
and
.ef
symbols (as defined by their
auxiliary symbol table entries) are the absolute line numbers of the function's
open brace ' { ' and close brace ' } ', respectively. The example in Table 1.15 (in
addition to showing nested inner blocks) shows a pair of C language functions
and the associated symbol table.
1.4.8. Symbol Table Entries
All symbols, regardless of their type and storage class, use the same symbol
table format. Every symbol table entry occupies 18 bytes. Table 1.16 describes
the fields within a symbol table entry. It should be noted that the indices for
symbol table entries begin with 0 (not 1). Also, auxiliary entries count as symbol
entries for purposes of indexing into the symbol table. Defined in
file_fmt.txt
are
SYM_ENT
and
SYM_ENT_SIZE
, the typedefs for the symbol table entry
structure and symbol table entry size, respectively.
BytesDeclaration Name Description
0-7
char sym_name
8-character null padded symbol name
0-3
unsigned long sym_zeroes
Zero in this field indicates the name is in the
string table
4-7
unsigned long sym_offset
Offset of the name in the string table
8-11
unsigned long sym_value
Symbol value (storage class dependent)
12-13
unsigned short sym_sec_nbr
Section number of symbol
14-15
unsigned short sym_type
Basic and derived type information
16
char sym_sclass
Storage class of symbol
17
char sym_nbr_aux
Number of auxiliary entries
Table 1.16: Symbol Table Entry
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