Branch and Jump Instructions

In all instructions below, Src2 can either be a register or an immediate value (integer). Branch instructions use a signed 16-bit offset field; hence they can jump instructions (not bytes) forward or instructions backwards. The jump instruction contains a 26 bit address field.

b label

Branch instruction

Unconditionally branch to the instruction at the label.

bczt label

Branch Coprocessor z True

bczf label

Branch Coprocessor z False

Conditionally branch to the instruction at the label if coprocessor z's condition flag is true (false).

beq Rsrc1, Src2, label

Branch on Equal

Conditionally branch to the instruction at the label if the contents of register Rsrc1 equals Src2.

beqz Rsrc, label

Branch on Equal Zero

Conditionally branch to the instruction at the label if the contents of Rsrc equals 0.

bge Rsrc1, Src2, label

Branch on Greater Than Equal

bgeu Rsrc1, Src2, label

Branch on GTE Unsigned

Conditionally branch to the instruction at the label if the contents of register Rsrc1 are greater than or equal to Src2.

bgez Rsrc, label

Branch on Greater Than Equal Zero

Conditionally branch to the instruction at the label if the contents of Rsrc are greater than or equal to 0.

bgezal Rsrc, label

Branch on Greater Than Equal Zero And Link

Conditionally branch to the instruction at the label if the contents of Rsrc are greater than or equal to 0. Save the address of the next instruction in register 31.

bgt Rsrc1, Src2, label

Branch on Greater Than

bgtu Rsrc1, Src2, label

Branch on Greater Than Unsigned

Conditionally branch to the instruction at the label if the contents of register Rsrc1 are greater than Src2.

bgtz Rsrc, label

Branch on Greater Than Zero

Conditionally branch to the instruction at the label if the contents of Rsrc are greater than 0.

ble Rsrc1, Src2, label

Branch on Less Than Equal

bleu Rsrc1, Src2, label

Branch on LTE Unsigned

Conditionally branch to the instruction at the label if the contents of register Rsrc1 are less than or equal to Src2.

blez Rsrc, label

Branch on Less Than Equal Zero

Conditionally branch to the instruction at the label if the contents of Rsrc are less than or equal to 0.

bgezal Rsrc, label

Branch on Greater Than Equal Zero And Link

bltzal Rsrc, label

Branch on Less Than And Link

Conditionally branch to the instruction at the label if the contents of Rsrc are greater or equal to 0 or less than 0, respectively. Save the address of the next instruction in register 31.

blt Rsrc1, Src2, label

Branch on Less Than

bltu Rsrc1, Src2, label

Branch on Less Than Unsigned

Conditionally branch to the instruction at the label if the contents of register Rsrc1 are less than Src2.

bltz Rsrc, label

Branch on Less Than Zero

Conditionally branch to the instruction at the label if the contents of Rsrc are less than 0.

bne Rsrc1, Src2, label

Branch on Not Equal

Conditionally branch to the instruction at the label if the contents of register Rsrc1 are not equal to Src2.

bnez Rsrc, label

Branch on Not Equal Zero

Conditionally branch to the instruction at the label if the contents of Rsrc are not equal to 0.

j label

Jump

Unconditionally jump to the instruction at the label.

jal label

Jump and Link

jalr Rsrc

Jump and Link Register

Unconditionally jump to the instruction at the label or whose address is in register Rsrc. Save the address of the next instruction in register 31.

jr Rsrc

Jump Register

Unconditionally jump to the instruction whose address is in register Rsrc.