Texas Instruments TMS320C54x, User Manual

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Symbol Table Structure and Content
A-19 Common Object File Format
A.7.4 Storage Classes
Byte 16 of the symbol table entry indicates the storage class of the symbol.
Storage classes refer to the method in which the C compiler accesses a
symbol. Table A–12 lists valid storage classes.
Table A–12. Symbol Storage Classes
Mnemonic Value Storage Class Mnemonic Value Storage Class
C_NULL 0 No storage class C_UNTAG 12 Union tag
C_AUTO 1 Automatic variable C_TPDEF 13 Type definition
C_EXT 2 External symbol C_USTATIC 14 Uninitialized static
C_STAT 3 Static C_ENTAG 15 Enumeration tag
C_REG 4 Register variable C_MOE 16 Member of an enumeration
C_EXTDEF 5 External definition C_REGPARM 17 Register parameter
C_LABEL 6 Label C_FIELD 18 Bit field
C_ULABEL 7 Undefined label C_BLOCK 100 Beginning or end of a block;
used only for the .bb and .eb
special symbols
C_MOS 8 Member of a structure C_FCN 101 Beginning or end of a func-
tion; used only for the .bf and
.ef special symbols
C_ARG 9 Function argument C_EOS 102 End of structure; used only
for the .eos special symbol
C_STRTAG 10 Structure tag C_FILE 103 Filename; used only for the
.file special symbol
C_MOU 11 Member of a union C_LINE 104 Used only by utility programs
Some special symbols are restricted to certain storage classes. Table A–13
lists these symbols and their storage classes.