Mono Intermediate Representation Documentation

Operation: OP_ADDCC_IMM

Add immediate that will set the carry flag.

dreg:

Destination register

inst_imm

Immediate value to add.

sreg1:

Source register to add.

Operation: OP_CALL_HANDLER.

cil_code:

Points to the CIL where the LEAVE or LEAVE_S

instruction was found.

inst_target_bb:

The target basic block for this invocation.

This instruction must call the target basic block.

Operation: OP_CISINST

Implements the CEE_MONO_CISINST opcode that is decoded from

the CIL stream.

This opcode takes as input an object reference and a class,

and leaves on the assigned register:

0. if the object is an instance of the class,

1. if the object is not instance of the class,

2. if the object is a proxy whose type cannot be determined.

Operation: OP_CCASTCLASS

Implements the CEE_MONO_CCASTCLASS opcode that is decoded from

the CIL stream.

This opcode takes as input an object reference and a class,

and leaves on the assigned register:

0. if the object is an instance of the class,

1. if the object is a proxy whose type cannot be determined

throws an InvalidCastException exception otherwise.

Operation: OP_LOCALLOC

inst_left:

The value

ins->inst_left = *sp;

ins->cil_code = ip;

This is the equivalent of alloca() in a C implementation: it

allocates a bunch of bytes on the stack dynamically. Local

variables are allocated statically in the stack instead.

It is implemented by moving the stack pointer according to the

platform ABI: you may need to keep a specific frame register

to address local variables when LOCALLOC is used (the PPC code

does this, for example: ifyou're doing the s390 port I suggest

starting from that)

Operation: OP_SUBCC_IMM

Substract immediate that will set the borrow flag.

dreg:

Destination register

inst_imm

Immediate value to add.

sreg1:

Source register to add.