Assembler Directives and Pseudo-Operations
.ALLOW Directive
.ALLOW Directive
The .ALLOW directive tells the Assembler to temporarily allow PA-RISC features from a higher version level of the PA-RISC architecture. The
.ALLOW directive also tells the Assembler to temporarily allow implementation-specific features in the assembly source file.
Syntax
.ALLOW 1.1
Lines of source code
.ALLOW
Parameters
1.1Allows PA-RISC 1.1 features.
2.0Allows PA-RISC 2.0 features.
Discussion
Use the .ALLOW directive with the .LEVEL directive. The Assembler uses the .LEVEL directive to mark the relocatable object file with the proper PA-RISC architecture version level. In the source file, the Assembler emits warning messages whenever a feature is used that is not appropriate for the specified .LEVEL directive.
Use the .ALLOW directive when it is necessary to include features or instructions from a later version of PA-RISC while leaving the relocatable object file marked as an earlier PA-RISC architecture version. For example, use the .ALLOW directive when you need to include PA-RISC 2.0 features or instructions while leaving the relocatable object file marked as a PA-RISC 1.1 architecture version.
A 2.0W parameter is not permitted with .ALLOW, because the code generated for 2.0W(64-bit mode) is incompatible with other levels.
