OS_Hardware 1 (changes)

Showing changes from revision #1 to #2: Added | Removed | Changed

Hardware Abstraction Layer

» Other documentation

» OS_Hardware

» OS_Hardware 1

OS_Hardware 1

(SWI &7A)

Use

This call looks up the address of a HAL routine. If it does not exist, an error is returned. Otherwise, the address of the routine is returned in R0. Calls made to the routine should be in a privileged mode, with R9 (sb) set to the static base value returned by this SWI. Refer to the HAL calling standards documentation for more details of calling conditions.

Notes

Error &6C1 (Hardware call not available) is returned if the requested call is unknown by this kernel/HAL version, or is a null entry (was (Null implemented offset as in a the ‘MOV pc,lr’ within the HAL ) entry table). Entries which are present but do nothing (i.e. implemented as ‘MOV pc,lr’) do not return an error.

See also

• OS_Hardware
• OS_Hardware 0