Module cortex_a::registers::SPSR_EL2::M [−][src]
Expand description
AArch64 state (Exception level and selected SP) that an exception was taken from. The possible values are:
M[3:0] | State
0b0000 | EL0t 0b0100 | EL1t 0b0101 | EL1h 0b1000 | EL2t 0b1001 | EL2h
Other values are reserved, and returning to an Exception level that is using AArch64 with a reserved value in this field is treated as an illegal exception return.
The bits in this field are interpreted as follows:
- M[3:2] holds the Exception Level.
- M[1] is unused and is RES 0 for all non-reserved values.
- M[0] is used to select the SP:
- 0 means the SP is always SP0.
- 1 means the exception SP is determined by the EL.
Enums
AArch64 state (Exception level and selected SP) that an exception was taken from. The possible values are: