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-frwpi, -fno-rwpi
Enables or disables the generation of Read-Write Position-Independent (RWPI) code.
Usage
When generating RWPI code, the compiler:
- Addresses the writable data using offsets from the static base register
sb. This means that:- The base address of the RW data region can be fixed at runtime.
- Data can have multiple instances.
- Data can be, but does not have to be, position-independent.
- Sets the PI attribute on read/write output sections.
Note
- This option is independent from
-fropi, meaning that these two options can be used individually or together. - When using
-frwpi,-frwpi-loweringand-fropi-loweringare automatically enabled.
Restrictions
The following restrictions apply:
- This option is not supported in AArch64 state.
- This option is not compatible with
-fpic,-fpie, or-fbare-metal-pieoptions.
Default
The default is -fno-rwpi.