Module flags 

Definition of some constants for easier readability of the steps. When they refer to single bit flagsets, only one constant is needed.

Constants

AP_ADD

Update ap by adding a number of positions

AP_ONE

Update ap by self increment

AP_Z2

Update by 2 in call instructions or zero behaviour for other instructions

DST_AP

Destination refers to ap register

NUM_FLAGS

Number of Cairo flags

OP0_AP

First operand refers to ap register

OP1_AP

Second operand refers to ap register

OP1_DBL

Second operand is double indexing

OP1_FP

Second operand refers to fp register

OP1_VAL

Second operand is immediate value

OPC_AEQ

Operation code is an assert-equal

OPC_CALL

Operation code is a call

OPC_JMP_INC

Operation code is a jump or an increment

OPC_RET

Operation code is a return

PC_ABS

Update pc by an absolute jump

PC_JNZ

Update pc by a conditional relative jump

PC_REL

Update pc by a relative jump

PC_SIZ

Default increase of pc by adding instruction size

POS_DST

Position of destination offset of 16 bits within instruction decomposition

POS_FLAGS

Bit position of the beginning of the flags in a Cairo instruction

POS_OP0

Position of first operand offset of 16 bits within instruction decomposition

POS_OP1

Position of second operand offset of 16 bits within instruction decomposition

RES_ADD

Result is an addition

RES_MUL

Result is a multiplication

RES_ONE

Result is a single operand