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MSORT STMED R13!, {R4-R7, LR}
SUB R3, R1, R0
CMP R3, #4
LDMEDLS R13!, {R4-R7, PC}
MOV R3, R3, LSR #3
MOV R3, R3, LSL #2
ADD R3, R3, R0
MOV R4, R0
MOV R5, R1
MOV R6, R3
MOV R7, R2
MOV R1, R6
BL MSORT
MOV R2, R7
MOV R1, R5
MOV R0, R6
BL MSORT
MOV R0, R4
MOV R1, R6
MOV R2, R5
MOV R3, R7
BL MERGE
LDMED R13!, {R4-R7, PC}
MERGE
STMED R13!, {R4-R7, R14}
MOV R4, R3
MOV R5, R3
MOV R3, R2
MOV R2, R1
MLOOP CMP R0, R1
LDRHS R7, [R2]
BHS M2SEL
CMP R2, R3
LDRHS R6, [R0]
BHS M1SEL
LDR R6, [R0]
LDR R7, [R2]
CMP R6, R7
BLO M1SEL
M2SEL ADDHS R2, R2, #4
STRHS R7, [R5],#4
MEND CMP R0, R1
CMPEQ R2, R3
BNE MLOOP
CLOOP LDR R6, [R5, #-4]!
STR R6, [R2, #-4]!
CMP R4, R5
BNE CLOOP
MOV R0, R2
MOV R1, R3
LDMED R13!, {R4-R7, PC}
M1SEL ADD R0, R0, #4
STR R6, [R5],#4
B MEND
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