Register Symbols
The SPARC architecture supports register symbols, which are symbols that initialize a
global register. A symbol table entry for a register symbol contains the entries that are listed in
the following table.
Table 12-25 SPARC: ELF Symbol Table Entry: Register Symbol
|
|
|
st_name
|
Index into the string table for the name of the symbol, or the value 0 for
a scratch register.
|
|
st_value
|
Register number. See the ABI manual for integer register
assignments.
|
|
st_size
|
Unused (0).
|
|
st_info
|
Bind is typically STB_GLOBAL, type must be
STT_SPARC_REGISTER.
|
|
st_other
|
Unused (0).
|
|
st_shndx
|
SHN_ABS if this object initializes this register
symbol,SHN_UNDEF otherwise.
|
|
The register values that are defined for SPARC are listed in the following table.
Table 12-26 SPARC: ELF Register Numbers
|
|
|
|
STO_SPARC_REGISTER_G2
|
0x2
|
%g2
|
|
STO_SPARC_REGISTER_G3
|
0x3
|
%g3
|
|
Absence of an entry for a particular global register means that the particular global register
is not used at all by the object.