Instruction Listing - philpax/skiron GitHub Wiki
load
Loads the value located in [src] into dst.
- Opcode:
0x00 - Operand Format: Destination, source (
DstSrc)
store
Stores the value located in src into [dst].
- Opcode:
0x01 - Operand Format: Destination, source (
DstSrc)
loadli
Load the immediate into the lower half of src.
- Opcode:
0x02 - Operand Format: Destination, unsigned immediate (
DstUimm)
loadui
Load the immediate into the upper half of src.
- Opcode:
0x03 - Operand Format: Destination, unsigned immediate (
DstUimm)
add
Add src1 and src2 together, and store the result in dst.
- Opcode:
0x04 - Operand Format: Destination, source, source (
DstSrcSrc)
Unallocated opcode
add
Add the immediate to src, and store the result in dst.
- Opcode:
0x06 - Operand Format: Destination, source, immediate (
DstSrcImm)
sub
Subtract src2 from src1, and store the result in dst.
- Opcode:
0x07 - Operand Format: Destination, source, source (
DstSrcSrc)
mul
Multiply src1 by src2, and store the result in dst.
- Opcode:
0x08 - Operand Format: Destination, source, source (
DstSrcSrc)
div
Divide src1 by src2, and store the result in dst.
- Opcode:
0x09 - Operand Format: Destination, source, source (
DstSrcSrc)
not
Bitwise-NOT src, and store the result in dst.
- Opcode:
0x0A - Operand Format: Destination, source (
DstSrc)
and
Bitwise-AND src1 with src2, and store the result in dst.
- Opcode:
0x0B - Operand Format: Destination, source, source (
DstSrcSrc)
or
Bitwise-OR src1 with src2, and store the result in dst.
- Opcode:
0x0C - Operand Format: Destination, source, source (
DstSrcSrc)
xor
Bitwise-XOR src1 with src2, and store the result in dst.
- Opcode:
0x0D - Operand Format: Destination, source, source (
DstSrcSrc)
shl
Shift src1 by src2 bits to the left, and store the result in dst.
- Opcode:
0x0E - Operand Format: Destination, source, source (
DstSrcSrc)
shr
Shift src1 by src2 bits to the right, and store the result in dst.
- Opcode:
0x0F - Operand Format: Destination, source, source (
DstSrcSrc)
cmp
Compare dst to src, and update the flags register appropriately.
- Opcode:
0x10 - Operand Format: Destination, source (
DstSrc)
j
Jump to the given label unconditionally.
- Opcode:
0x11 - Operand Format: Label (
Label)
je
If the zero flag is set, jump to the given label.
- Opcode:
0x12 - Operand Format: Label (
Label)
jne
If the zero flag is not set, jump to the given label.
- Opcode:
0x13 - Operand Format: Label (
Label)
jgt
If the greater flag is set, jump to the given label.
- Opcode:
0x14 - Operand Format: Label (
Label)
jlt
If the less flag is set, jump to the given label.
- Opcode:
0x15 - Operand Format: Label (
Label)
Unallocated opcodes (41 free)
halt
Halt operation.
- Opcode:
0x3F - Operand Format: None (
None)
call
Store the current instruction pointer in ra, and then jump to the given label.
- Opcode: Pseudo
- Operand Format: Label (
Label)
callsv
Push the current return address, call the given label, and pop the return address.
- Opcode: Pseudo
- Operand Format: Label (
Label)
dw
Create a word containing arg2.
- Opcode: Pseudo
- Operand Format: None (
None)
jr
Jump to the given register.
- Opcode: Pseudo
- Operand Format: Label (
Label)
loadi
Load the given 32-bit immediate, or label, into a register.
- Opcode: Pseudo
- Operand Format: Unsigned immediate (
Uimm)
move
Copy the value in src to dst.
- Opcode: Pseudo
- Operand Format: Destination, source (
DstSrc)
pop
Pop the given register from the stack (i.e. load register, sp; add sp, 4).
- Opcode: Pseudo
- Operand Format: Destination (
Dst)
push
Push the given register onto the stack (i.e. add sp, -4; store sp, register).
- Opcode: Pseudo
- Operand Format: Destination (
Dst)
rep
Repeat the following instruction arg1 times.
- Opcode: Pseudo
- Operand Format: Unsigned immediate (
Uimm)