Looking at the ARMv7a spec, the two instructions 0xdf004667 look like the following two 16b thumb instructions:
0xdf00 SVC #0 0x4667 MOV R7, R12
Looking at the ARMv7a spec, the two instructions 0xdf004667 look like the following two 16b thumb instructions:
0xdf00 SVC #0
0x4667 MOV R7, R12