Difference between revisions of "JOBSTTS.OUT 001e4ed0 - 001e4f78"
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(Created page with "beq r4,r0,end #if passed in value is 0, skip routine addu r2,r0,r0 #clear r2 lui r2,0x801f lbu r2,0x0044(r2) #r2 = byte at 0x801f0044 nop beq r2,r0,forward...") |
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| − | beq r4,r0,end | + | beq r4,r0,end |
| − | addu r2,r0,r0 #clear r2 | + | addu r2,r0,r0 #clear r2 |
| − | lui r2,0x801f | + | lui r2,0x801f |
| − | lbu r2,0x0044(r2) #r2 = byte at 0x801f0044 | + | lbu r2,0x0044(r2) #r2 = byte at 0x801f0044 |
| − | nop | + | nop |
| − | beq r2,r0,forward #jump forward if r2 is empty | + | beq r2,r0,forward #jump forward if r2 is empty |
| − | addu r7,r0,r0 #clear r7 | + | addu r7,r0,r0 #clear r7 |
| − | ori r2,r0,0x0007 #r2 = 7 | + | ori r2,r0,0x0007 #r2 = 7 |
| − | lui r1,0x801f | + | lui r1,0x801f |
| − | sw r2,0x0048(r1) #store 7 in 0x801f0048 | + | sw r2,0x0048(r1) #store 7 in 0x801f0048 |
| − | lui r1,0x801f | + | lui r1,0x801f |
| − | sb r0,0x0044(r1) #clear 0x801f0044 | + | sb r0,0x0044(r1) #clear 0x801f0044 |
| − | forward: #0x801f0044 is always empty at this point | + | forward: #0x801f0044 is always empty at this point |
| − | addiu r4,r4,-0x0001 #r4-- | + | addiu r4,r4,-0x0001 #r4-- |
| − | addiu r2,r0,-0x0001 #r2 = -1 | + | addiu r2,r0,-0x0001 #r2 = -1 |
| − | beq r4,r2,end #end routine if r4 is -1 | + | beq r4,r2,end #end routine if r4 is -1 |
| − | addu r2,r7,r0 #r7 is return value | + | addu r2,r7,r0 #r7 is return value |
| − | ori r10,r0,0x0001 #r10 is 1 | + | ori r10,r0,0x0001 #r10 is 1 |
| − | ori r9,r0,0x0007 #r9 is 7 | + | ori r9,r0,0x0007 #r9 is 7 |
| − | addiu r8,r0,-0x0001 #r8 is -1 | + | addiu r8,r0,-0x0001 #r8 is -1 |
| − | backwards: | + | backwards: |
| − | lui r6,0x8020 | + | lui r6,0x8020 |
| − | lw r6,-0x58ec(r6) #r6 = word at 0x801fa714 | + | lw r6,-0x58ec(r6) #r6 = word at 0x801fa714 |
| − | lui r3,0x801f | + | lui r3,0x801f |
| − | lw r3,0x0048(r3) #r3 = word at 0x801f0048 (could be 7?) | + | lw r3,0x0048(r3) #r3 = word at 0x801f0048 (could be 7?) |
| − | lbu r2,0x0000(r6) #r2 = value pointed at from 0x801fa714 pointer | + | lbu r2,0x0000(r6) #r2 = value pointed at from 0x801fa714 pointer |
| − | addiu r5,r3,-0x0001 #r5 = r3 - 1 | + | addiu r5,r3,-0x0001 #r5 = r3 - 1 |
| − | lui r1,0x801f | + | lui r1,0x801f |
| − | sw r5,0x0048(r1) #store r5 at 0x801f0048 | + | sw r5,0x0048(r1) #store r5 at 0x801f0048 |
| − | srav r2,r2,r3 #rightshift r2 by r3 bytes (could be 7?) | + | srav r2,r2,r3 #rightshift r2 by r3 bytes (could be 7?) |
| − | andi r2,r2,0x0001 #r2 = far right byte | + | andi r2,r2,0x0001 #r2 = far right byte |
| − | beq r2,r0,skip #skip if r2 is odd | + | beq r2,r0,skip #skip if r2 is odd |
| − | sllv r2,r10,r4 #r2 = r10 leftshifted r4 | + | sllv r2,r10,r4 #r2 = r10 leftshifted r4 |
| − | or r7,r7,r2 #r7 = r7 U r2 | + | or r7,r7,r2 #r7 = r7 U r2 |
| − | skip: | + | skip: |
| − | bgez r5,skip2 #skip this if r5 is positive | + | bgez r5,skip2 #skip this if r5 is positive |
| − | addiu r4,r4,-0x0001 #r4-- | + | addiu r4,r4,-0x0001 #r4-- |
| − | addiu r2,r6,0x0001 #r2 is r6 + 1 | + | addiu r2,r6,0x0001 #r2 is r6 + 1 |
| − | lui r1,0x801f | + | lui r1,0x801f |
| − | sw r9,0x0048(r1) #store r9 in 0x801f0048 | + | sw r9,0x0048(r1) #store r9 in 0x801f0048 |
| − | lui r1,0x8020 | + | lui r1,0x8020 |
| − | sw r2,-0x58ec(r1) #store r2 in 0x801fa714 | + | sw r2,-0x58ec(r1) #store r2 in 0x801fa714 |
| − | skip2: | + | skip2: |
| − | bne r4,r8,backwards #loop if r4 and r8 aren't equal | + | bne r4,r8,backwards #loop if r4 and r8 aren't equal |
| − | addu r2,r7,r0 #return value is r7 | + | addu r2,r7,r0 #return value is r7 |
| − | end: | + | end: |
| − | jr r31 #finally over | + | jr r31 #finally over |
| − | nop | + | nop |
Revision as of 07:17, 21 May 2024
beq r4,r0,end addu r2,r0,r0 #clear r2 lui r2,0x801f lbu r2,0x0044(r2) #r2 = byte at 0x801f0044 nop beq r2,r0,forward #jump forward if r2 is empty addu r7,r0,r0 #clear r7 ori r2,r0,0x0007 #r2 = 7 lui r1,0x801f sw r2,0x0048(r1) #store 7 in 0x801f0048 lui r1,0x801f sb r0,0x0044(r1) #clear 0x801f0044 forward: #0x801f0044 is always empty at this point addiu r4,r4,-0x0001 #r4-- addiu r2,r0,-0x0001 #r2 = -1 beq r4,r2,end #end routine if r4 is -1 addu r2,r7,r0 #r7 is return value ori r10,r0,0x0001 #r10 is 1 ori r9,r0,0x0007 #r9 is 7 addiu r8,r0,-0x0001 #r8 is -1 backwards: lui r6,0x8020 lw r6,-0x58ec(r6) #r6 = word at 0x801fa714 lui r3,0x801f lw r3,0x0048(r3) #r3 = word at 0x801f0048 (could be 7?) lbu r2,0x0000(r6) #r2 = value pointed at from 0x801fa714 pointer addiu r5,r3,-0x0001 #r5 = r3 - 1 lui r1,0x801f sw r5,0x0048(r1) #store r5 at 0x801f0048 srav r2,r2,r3 #rightshift r2 by r3 bytes (could be 7?) andi r2,r2,0x0001 #r2 = far right byte beq r2,r0,skip #skip if r2 is odd sllv r2,r10,r4 #r2 = r10 leftshifted r4 or r7,r7,r2 #r7 = r7 U r2 skip: bgez r5,skip2 #skip this if r5 is positive addiu r4,r4,-0x0001 #r4-- addiu r2,r6,0x0001 #r2 is r6 + 1 lui r1,0x801f sw r9,0x0048(r1) #store r9 in 0x801f0048 lui r1,0x8020 sw r2,-0x58ec(r1) #store r2 in 0x801fa714 skip2: bne r4,r8,backwards #loop if r4 and r8 aren't equal addu r2,r7,r0 #return value is r7 end: jr r31 #finally over nop
