URL https://opencores.org/ocsvn/eco32/eco32/trunk

Subversion Repositories eco32

[/] [eco32/] [tags/] [eco32-0.24/] [hwtests/] [jalrtest/] [jalrtest.s] - Diff between revs 14 and 211

Rev 14	Rev 211
`;`	`;`
`; jalrtest.s -- test the special case 'jalr $31'`	`; jalrtest.s -- test the special case 'jalr $31'`
`;`	`;`

`; One of the following 4 possibilities is displayed:`	`; One of the following 4 possibilities is displayed:`
`; 0 = jump not executed, return address not stored in $31`	`; 0 = jump not executed, return address not stored in $31`
`; 1 = jump was executed, return address not stored in $31`	`; 1 = jump was executed, return address not stored in $31`
`; 2 = jump not executed, return address stored in $31`	`; 2 = jump not executed, return address stored in $31`
`; 3 = jump was executed, return address stored in $31`	`; 3 = jump was executed, return address stored in $31`

`.set io_base,0xF0300000`	`.set io_base,0xF0300000`

`add $16,$0,x`	`add $16,$0,x`
`add $31,$0,$16`	`add $31,$0,$16`
`jalr $31`	`jalr $31`
`add $4,$0,0`	`add $4,$0,0`
`j y`	`j y`
`x:`	`x:`
`add $4,$0,1`	`add $4,$0,1`
`y:`	`y:`
`beq $31,$16,z`	`beq $31,$16,z`
`add $4,$4,2`	`add $4,$4,2`
`z:`	`z:`
`add $4,$4,0x30`	`add $4,$4,0x30`
`jal out`	`jal out`
`halt:`	`halt:`
`j halt`	`j halt`

`out:`	`out:`
`add $8,$0,io_base`	`add $8,$0,io_base`
`out1:`	`out1:`
`ldw $9,$8,8`	`ldw $9,$8,8`
`and $9,$9,1`	`and $9,$9,1`
`beq $9,$0,out1`	`beq $9,$0,out1`
`stw $4,$8,12`	`stw $4,$8,12`
`jr $31`	`jr $31`