Embedded Instructions

51 PowerISA instructions in this extension - click any row for encoding, pseudocode, and full documentation.

Mnemonic ⇅	Syntax	Format ⇅	Summary
dcblc	dcblc CT, RA, RB	X-form	Clears a cache line lock.
dccci	dccci RA, RB	X-form	Invalidates a congruence class in the data cache (Embedded).
dcread	dcread RT, RA, RB	X-form	Reads a data cache tag or data (Debug).
ehpriv	ehpriv OC	X-form	Enters embedded hypervisor privileged state.
icblc	icblc CT, RA, RB	X-form	Clears an instruction cache line lock.
iccci	iccci RA, RB	X-form	Invalidates a congruence class in the instruction cache (Embedded).
icread	icread RA, RB	X-form	Reads an instruction cache tag or data (Debug).
lbzepx	lbzepx RT, RA, RB	X-form	Loads a byte using the External PID (for OS kernels accessing user memory).
lhzepx	lhzepx RT, RA, RB	X-form	Loads a halfword using the External PID.
lwdi	lwdi RT, RA, RB	X-form	Loads a word and sends decoration sideband signals to the bus.
lwzepx	lwzepx RT, RA, RB	X-form	Loads a word using the External PID.
macchw	macchw RT, RA, RB	XO-form	Multiply bottom half of RA by top half of RB, add to RT.
macchws	macchws RT, RA, RB	XO-form	Signed Multiply Accumulate Cross Halfword with Saturation.
macchwsu	macchwsu RT, RA, RB	XO-form	Mixed Sign Multiply Accumulate Cross Halfword with Saturation.
macchwu	macchwu RT, RA, RB	XO-form	Unsigned Multiply Accumulate Cross Halfword.
machhw	machhw RT, RA, RB	XO-form	Multiply top half of RA by top half of RB, add to RT.
machhws	machhws RT, RA, RB	XO-form	Signed Multiply Accumulate High Halfword with Saturation.
machhwsu	machhwsu RT, RA, RB	XO-form	Mixed Sign Multiply Accumulate High Halfword with Saturation.
machhwu	machhwu RT, RA, RB	XO-form	Unsigned Multiply Accumulate High Halfword.
maclhw	maclhw RT, RA, RB	XO-form	Multiply bottom half of RA by bottom half of RB, add to RT.
maclhws	maclhws RT, RA, RB	XO-form	Signed Multiply Accumulate Low Halfword with Saturation.
maclhwsu	maclhwsu RT, RA, RB	XO-form	Mixed Sign Multiply Accumulate Low Halfword with Saturation.
maclhwu	maclhwu RT, RA, RB	XO-form	Unsigned Multiply Accumulate Low Halfword.
mfdcr	mfdcr RT, DCRN	XFX-form	Reads an on-chip peripheral register (DCR).
mfpmr	mfpmr RT, PMRN	X-form	Reads a performance monitor register (Embedded).
msync	msync	X-form	Synchronizes memory accesses (Alias for sync).
mtdcr	mtdcr DCRN, RS	XFX-form	Writes an on-chip peripheral register (DCR).
mtpmr	mtpmr PMRN, RS	X-form	Writes a performance monitor register (Embedded).
mulchw	mulchw RT, RA, RB	XO-form	Multiply bottom half of RA by top half of RB.
mulchwu	mulchwu RT, RA, RB	XO-form	Unsigned Multiply Cross Halfword.
mulhhw	mulhhw RT, RA, RB	XO-form	Multiply top half of RA by top half of RB.
mulhhwu	mulhhwu RT, RA, RB	XO-form	Unsigned Multiply High Halfword.
mullhw	mullhw RT, RA, RB	XO-form	Multiply bottom half of RA by bottom half of RB.
mullhwu	mullhwu RT, RA, RB	XO-form	Unsigned Multiply Low Halfword.
nmacchw	nmacchw RT, RA, RB	XO-form	Negate product of cross halfwords and add to accumulator.
nmacchws	nmacchws RT, RA, RB	XO-form	Negate product of cross halfwords and add to accumulator (Signed Saturation).
nmachhw	nmachhw RT, RA, RB	XO-form	Negate product of high halfwords and add to accumulator.
nmachhws	nmachhws RT, RA, RB	XO-form	Negate product of high halfwords and add to accumulator (Signed Saturation).
nmaclhw	nmaclhw RT, RA, RB	XO-form	Negate product of low halfwords and add to accumulator.
nmaclhws	nmaclhws RT, RA, RB	XO-form	Negate product of low halfwords and add to accumulator (Signed Saturation).
stbepx	stbepx RS, RA, RB	X-form	Stores a byte using the External PID.
stdi	stdi RS, RA, RB	X-form	Stores a word and sends decoration sideband signals.
sthep	sthepx RS, RA, RB	X-form	Stores a halfword using the External PID.
stwepx	stwepx RS, RA, RB	X-form	Stores a word using the External PID.
tlbilx	tlbilx T, RA, RB	X-form	Invalidates TLB entries on the local processor based on Process ID (PID).
tlbivax	tlbivax RA, RB	X-form	Invalidates a TLB entry by virtual address.
tlbre	tlbre	X-form	Reads a TLB entry into MAS registers.
tlbsx	tlbsx RA, RB	X-form	Searches the TLB for an address.
tlbwe	tlbwe	X-form	Writes a TLB entry from MAS registers.
wrtee	wrtee RS	X-form	Updates the EE bit of the MSR from a GPR.
wrteei	wrteei E	X-form	Updates the EE bit of the MSR from an immediate.