test

Linker and Libraries Guide

SPARC: 32-bit and 64-bit Local Executable (LE)

This code sequence can only be used from within a dynamic executable to reference a TLS variable defined within the executable. If this is the case, the static tlsoffset is known at link-edit time and no runtime relocations are required.

Table 8–6 SPARC: 32-bit and 64-bit Local Executable Thread-Local Variable Access Codes

Code Sequence 

Initial Relocations 

Symbol 

 
0x00 sethi %hix(@tpoff(x)), %o0
0x04 xor   %o0,%lo(@tpoff(x)),%o0
0x08 add   %g7, %o0, %o0
 
# %o0 - contains address of TLS variable
 
R_SPARC_TLS_LE_HIX22
R_SPARC_TLS_LE_LOX10
<none>
 
x
x

The sethi and or instructions generate R_SPARC_TLS_LE_HIX22 and R_SPARC_TLS_LE_LOX10 relocations respectively. The link-editor binds these relocations directly to the static TLS offset for the symbol defined in the executable. No relocation processing is required at runtime.