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

Subversion Repositories plasma

[/] [plasma/] [trunk/] [tools/] [opcodes.asm] - Diff between revs 23 and 29

Go to most recent revision | Show entire file | Details | Blame | View Log

Rev 23	Rev 29
Line 18...	Line 18...
`.globl entry`	`.globl entry`
`.ent entry`	`.ent entry`
`entry:`	`entry:`
`.set noreorder`	`.set noreorder`

	`#These four instructions must be the first instructions`
	`#convert.exe will correctly initialize $gp`
	`lui $gp,0`
	`ori $gp,$gp,0`
	`#convert.exe will set $4=.sbss_start $5=.bss_end`
	`ori $4,$0,0`
	`ori $5,$0,0`

`mtc0 $0,$12 #disable interrupts`	`mtc0 $0,$12 #disable interrupts`
`ori $20,$0,0xffff #serial port write address`	`ori $20,$0,0xffff #serial port write address`
`ori $21,$0,'\n' # letter`	`ori $21,$0,'\n' # letter`
`ori $22,$0,'X' #'X' letter`	`ori $22,$0,'X' #'X' letter`

Line 666...	Line 674...
`sb $21,0($20)`	`sb $21,0($20)`

`#h: SH`	`#h: SH`
`ori $2,$0,'h'`	`ori $2,$0,'h'`
`sb $2,0($20)`	`sb $2,0($20)`
`ori $2,$0,0xf000`	`ori $4,$0,0xf000`
`ori $2,$0,0x4142`	`ori $2,$0,0x4142`
`sw $2,16($2)`	`sh $2,16($4)`
`lb $3,16($2)`	`lb $3,16($4)`
`sb $3,0($20)`	`sb $3,0($20)`
`lb $2,17($2)`	`lb $2,17($4)`
`sb $2,0($20)`	`sb $2,0($20)`
`sb $21,0($20)`	`sb $21,0($20)`

`#i: SW`	`#i: SW`
`ori $2,$0,'i'`	`ori $2,$0,'i'`
Line 898...	Line 906...
`ori $3,$0,16`	`ori $3,$0,16`
`srav $3,$2,$3`	`srav $3,$2,$3`
`sb $3,0($20)`	`sb $3,0($20)`
`ori $3,$0,25`	`ori $3,$0,25`
`li $2,0x84000000`	`li $2,0x84000000`
`sra $3,$2,$3`	`srav $3,$2,$3`
`sub $3,$3,0x80`	`sub $3,$3,0x80`
`sb $3,0($20)`	`sb $3,0($20)`
`sb $21,0($20)`	`sb $21,0($20)`

`#e: SRL`	`#e: SRL`
Line 910...	Line 918...
`sb $2,0($20)`	`sb $2,0($20)`
`li $2,0x40414243`	`li $2,0x40414243`
`srl $3,$2,16`	`srl $3,$2,16`
`sb $3,0($20)`	`sb $3,0($20)`
`li $2,0x84000000`	`li $2,0x84000000`
`sra $3,$2,25`	`srl $3,$2,25`
`sb $3,0($20)`	`sb $3,0($20)`
`sb $21,0($20)`	`sb $21,0($20)`

`#f: SRLV`	`#f: SRLV`
`ori $2,$0,'f'`	`ori $2,$0,'f'`
Line 923...	Line 931...
`ori $3,$0,16`	`ori $3,$0,16`
`srlv $4,$2,$3`	`srlv $4,$2,$3`
`sb $4,0($20)`	`sb $4,0($20)`
`ori $3,$0,25`	`ori $3,$0,25`
`li $2,0x84000000`	`li $2,0x84000000`
`sra $3,$2,$3`	`srlv $3,$2,$3`
`sub $3,$3,0x80`
`sb $3,0($20)`	`sb $3,0($20)`
`sb $21,0($20)`	`sb $21,0($20)`


`ori $2,$0,'D'`	`ori $2,$0,'D'`

Browse

Tools

Subversion Repositories plasma

[/] [plasma/] [trunk/] [tools/] [opcodes.asm] - Diff between revs 23 and 29