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S3C2440A RISC MICROPROCESSOR ARM INSTRUCTION SET
3-19
MSR (transfer register contents or immediate value to PSR flag bits only)
Cond Source operand
Pd
101001111
31 222728 11122123
I1000
26 25 24 0
Cond 00000000
00010
Pd
101001111
31 222728 11122123
Rm
MSR (transfer register contents to PSR)
43 0
Cond 000000000000
00010 Rd
Ps
001111
31 2227 1528 16 11122123
MRS (transfer PSR contents to a register)
0
[3:0] Source Register
[22] Destination PSR
0 = CPSR 1 = SPSR_<current mode>
[31:28] Condition Field
[15:12] Destination Register
[22] Source PSR
0 = CPSR 1 = SPSR_<current mode>
[31:28] Condition Field
[3:0] Source Register
[11:4] Source operand is an immediate value
[7:0] Unsigned 8 bit immediate value
[11:8] Shift applied to Imm
[22] Destination PSR
0 = CPSR 1 = SPSR_<current mode>
[25] Immediate Operand
0 = Source operand is a register
1 = SPSR_<current mode>
[11:0] Source Operand
[31:28] Condition Field
00000000 Rm
11 4 3 0
Rotate Imm
11 087
Figure 3-11. PSR Transfer