HelenOS sources

OP_SHIFT           98 kernel/arch/mips32/src/debug/stacktrace.c 	((0x0 << OP_SHIFT) | (SP << RS_SHIFT) | (R0 << RT_SHIFT) | 0x21)
OP_SHIFT          100 kernel/arch/mips32/src/debug/stacktrace.c 	((0x0 << OP_SHIFT) | (SP << RD_SHIFT) | (R0 << RT_SHIFT) | 0x21)
OP_SHIFT          102 kernel/arch/mips32/src/debug/stacktrace.c 	((0x8 << OP_SHIFT) | (SP << RS_SHIFT) | (SP << RT_SHIFT))
OP_SHIFT          104 kernel/arch/mips32/src/debug/stacktrace.c 	((0x9 << OP_SHIFT) | (SP << RS_SHIFT) | (SP << RT_SHIFT))
OP_SHIFT          106 kernel/arch/mips32/src/debug/stacktrace.c 	((0x0 << OP_SHIFT) | (RA << RS_SHIFT) | (0x0 << HINT_SHIFT) | 0x8)
OP_SHIFT          108 kernel/arch/mips32/src/debug/stacktrace.c 	((0x2b << OP_SHIFT) | (RA << RT_SHIFT))