The JOSCR characteristics are:
- Provides operating system control of the use of the Jazelle
- Usage constraints
The JOSCR is:
- A read/write register
- Accessible only from EL1 or higher.
Available in all configurations.
- See the register summary in table Table 3-3 Summary of Jazelle registers.
The JOSCR is a 32-bit register with all bits[31:0] as RES0. Writes are ignored, and all bits read as zero.
To access the JOSCR in the AArch32 state, read or write the register
MRC p14, 7, <Rd>, c1, c0, 0; Read Jazelle OS Control Register
MCR p14, 7, <Rd>, c1, c0, 0; Write Jazelle OS Control Register