MACRO_Compiler_Directives

   You can use certain arguments to these directives to indicate
   register sets. You express a register set by listing the
   registers, separated by commas, within angle brackets. For
   example:

   <R1,R2,R3>

   If only one register is in the set, no angle brackets are needed.
   For example:

   R1
 

Additional information available:

.BRANCH_LIKELY  .BRANCH_UNLIKELY                .CALL_ENTRY     .CALL_LINKAGE
.DEFINE_LINKAGE .DISABLE        .ENABLE         .GLOBAL_LABEL   .JSB_ENTRY
.JSB32_ENTRY    .PRESERVE       .SET_REGISTERS  .SYMBOL_ALIGNMENT
.USE_LINKAGE