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-rw-r--r--arm9/asm/libmath.s320
1 files changed, 320 insertions, 0 deletions
diff --git a/arm9/asm/libmath.s b/arm9/asm/libmath.s
new file mode 100644
index 00000000..02dcfbcf
--- /dev/null
+++ b/arm9/asm/libmath.s
@@ -0,0 +1,320 @@
+ .include "asm/macros.inc"
+ .include "global.inc"
+
+ .text
+
+ arm_func_start MATH_CountPopulation
+MATH_CountPopulation: ; 0x020DDC5C
+ ldr r1, _020DDC94 ; =0x55555555
+ ldr r2, _020DDC98 ; =0x33333333
+ and r1, r1, r0, lsr #0x1
+ sub r0, r0, r1
+ and r1, r0, r2
+ and r0, r2, r0, lsr #0x2
+ add r1, r1, r0
+ ldr r0, _020DDC9C ; =0x0F0F0F0F
+ add r1, r1, r1, lsr #0x4
+ and r0, r1, r0
+ add r0, r0, r0, lsr #0x8
+ add r0, r0, r0, lsr #0x10
+ and r0, r0, #0xff
+ bx lr
+ .balign 4
+_020DDC94: .word 0x55555555
+_020DDC98: .word 0x33333333
+_020DDC9C: .word 0x0F0F0F0F
+
+ arm_func_start MATH_CalcSHA1
+MATH_CalcSHA1: ; 0x020DDCA0
+ stmdb sp!, {r4-r6,lr}
+ sub sp, sp, #0x68
+ mov r6, r0
+ add r0, sp, #0x0
+ mov r5, r1
+ mov r4, r2
+ bl MATH_SHA1Init
+_020DDCBC: ; 0x020DDCBC
+ add r0, sp, #0x0
+ mov r1, r5
+ mov r2, r4
+ bl MATH_SHA1Update
+_020DDCCC: ; 0x020DDCCC
+ add r0, sp, #0x0
+ mov r1, r6
+ bl MATH_SHA1GetHash
+ add sp, sp, #0x68
+ ldmia sp!, {r4-r6,lr}
+ bx lr
+
+ arm_func_start MATH_CalcMD5
+MATH_CalcMD5: ; 0x020DDCE4
+ stmdb sp!, {r4-r6,lr}
+ sub sp, sp, #0x58
+ mov r6, r0
+ add r0, sp, #0x0
+ mov r5, r1
+ mov r4, r2
+ bl DGT_Hash1Reset
+_020DDD00: ; 0x020DDD00
+ add r0, sp, #0x0
+ mov r1, r5
+ mov r2, r4
+ bl DGT_Hash1SetSource
+ add r1, sp, #0x0
+ mov r0, r6
+ bl DGT_Hash1GetDigest_R
+ add sp, sp, #0x58
+ ldmia sp!, {r4-r6,lr}
+ bx lr
+
+ arm_func_start MATH_CalcCRC32
+MATH_CalcCRC32: ; 0x020DDD28
+ stmdb sp!, {lr}
+ sub sp, sp, #0x4
+ mov lr, r1
+ mvn r12, #0x0
+ mov r3, r2
+ add r1, sp, #0x0
+ mov r2, lr
+ str r12, [sp, #0x0]
+ bl MATHi_CRC32UpdateRev
+_020DDD4C: ; 0x020DDD4C
+ ldr r0, [sp, #0x0]
+ mvn r0, r0
+ add sp, sp, #0x4
+ ldmia sp!, {lr}
+ bx lr
+
+ arm_func_start MATH_CalcCRC16CCITT
+MATH_CalcCRC16CCITT: ; 0x020DDD60
+ stmdb sp!, {lr}
+ sub sp, sp, #0x4
+ ldr ip, _020DDD94 ; =0x0000FFFF
+ mov lr, r1
+ mov r3, r2
+ add r1, sp, #0x0
+ mov r2, lr
+ strh r12, [sp, #0x0]
+ bl MATHi_CRC16Update
+ ldrh r0, [sp, #0x0]
+ add sp, sp, #0x4
+ ldmia sp!, {lr}
+ bx lr
+ .balign 4
+_020DDD94: .word 0x0000FFFF
+
+ arm_func_start MATH_CalcCRC16
+MATH_CalcCRC16: ; 0x020DDD98
+ stmdb sp!, {lr}
+ sub sp, sp, #0x4
+ mov lr, r1
+ mov r12, #0x0
+ mov r3, r2
+ add r1, sp, #0x0
+ mov r2, lr
+ strh r12, [sp, #0x0]
+ bl MATHi_CRC16UpdateRev
+ ldrh r0, [sp, #0x0]
+ add sp, sp, #0x4
+ ldmia sp!, {lr}
+ bx lr
+
+ arm_func_start MATH_CalcCRC8
+MATH_CalcCRC8: ; 0x020DDDCC
+ stmdb sp!, {lr}
+ sub sp, sp, #0x4
+ mov lr, r1
+ mov r12, #0x0
+ mov r3, r2
+ add r1, sp, #0x0
+ mov r2, lr
+ strb r12, [sp, #0x0]
+ bl MATHi_CRC8Update
+_020DDDF0: ; 0x020DDDF0
+ ldrb r0, [sp, #0x0]
+ add sp, sp, #0x4
+ ldmia sp!, {lr}
+ bx lr
+
+ arm_func_start MATHi_CRC32UpdateRev
+MATHi_CRC32UpdateRev:
+ stmdb sp!, {r4,lr}
+ cmp r3, #0x0
+ ldr r4, [r1, #0x0]
+ mov lr, #0x0
+ bls _020DDE38
+_020DDE14:
+ ldrb r12, [r2, #0x0]
+ add lr, lr, #0x1
+ cmp lr, r3
+ eor r12, r4, r12
+ and r12, r12, #0xff
+ ldr r12, [r0, r12, lsl #0x2]
+ add r2, r2, #0x1
+ eor r4, r12, r4, lsr #0x8
+ blo _020DDE14
+_020DDE38:
+ str r4, [r1, #0x0]
+ ldmia sp!, {r4,lr}
+ bx lr
+
+ arm_func_start MATHi_CRC32InitTableRev
+MATHi_CRC32InitTableRev: ; 0x020DDE44
+ stmdb sp!, {r4,lr}
+ mov lr, #0x0
+ mov r3, lr
+_020DDE50:
+ mov r4, lr
+ mov r12, r3
+_020DDE58:
+ ands r2, r4, #0x1
+ eorne r4, r1, r4, lsr #0x1
+ add r12, r12, #0x1
+ moveq r4, r4, lsr #0x1
+ cmp r12, #0x8
+ blo _020DDE58
+ str r4, [r0, lr, lsl #0x2]
+ add lr, lr, #0x1
+ cmp lr, #0x100
+ blo _020DDE50
+ ldmia sp!, {r4,lr}
+ bx lr
+
+ arm_func_start MATHi_CRC16UpdateRev
+MATHi_CRC16UpdateRev: ; 0x020DDE88
+ stmdb sp!, {r4,lr}
+ cmp r3, #0x0
+ ldrh r4, [r1, #0x0]
+ mov lr, #0x0
+ bls _020DDEC4
+_020DDE9C:
+ ldrb r12, [r2, #0x0]
+ add lr, lr, #0x1
+ cmp lr, r3
+ eor r12, r4, r12
+ and r12, r12, #0xff
+ mov r12, r12, lsl #0x1
+ ldrh r12, [r0, r12]
+ add r2, r2, #0x1
+ eor r4, r12, r4, lsr #0x8
+ blo _020DDE9C
+_020DDEC4:
+ strh r4, [r1, #0x0]
+ ldmia sp!, {r4,lr}
+ bx lr
+
+ arm_func_start MATHi_CRC16Update
+MATHi_CRC16Update: ; 0x020DDED0
+ stmdb sp!, {r4,lr}
+ cmp r3, #0x0
+ ldrh r4, [r1, #0x0]
+ mov lr, #0x0
+ bls _020DDF0C
+_020DDEE4:
+ ldrb r12, [r2, #0x0]
+ add lr, lr, #0x1
+ cmp lr, r3
+ eor r12, r12, r4, lsr #0x8
+ and r12, r12, #0xff
+ mov r12, r12, lsl #0x1
+ ldrh r12, [r0, r12]
+ add r2, r2, #0x1
+ eor r4, r12, r4, lsl #0x8
+ blo _020DDEE4
+_020DDF0C:
+ strh r4, [r1, #0x0]
+ ldmia sp!, {r4,lr}
+ bx lr
+
+ arm_func_start MATHi_CRC16InitTableRev
+MATHi_CRC16InitTableRev: ; 0x020DDF18
+ stmdb sp!, {r4,lr}
+ mov lr, #0x0
+ mov r3, lr
+_020DDF24:
+ mov r4, lr
+ mov r12, r3
+_020DDF2C:
+ ands r2, r4, #0x1
+ eorne r4, r1, r4, lsr #0x1
+ add r12, r12, #0x1
+ moveq r4, r4, lsr #0x1
+ cmp r12, #0x8
+ blo _020DDF2C
+ mov r2, lr, lsl #0x1
+ add lr, lr, #0x1
+ strh r4, [r0, r2]
+ cmp lr, #0x100
+ blo _020DDF24
+ ldmia sp!, {r4,lr}
+ bx lr
+
+ arm_func_start MATHi_CRC16InitTable
+MATHi_CRC16InitTable: ; 0x020DDF60
+ stmdb sp!, {r4-r5,lr}
+ sub sp, sp, #0x4
+ mov r4, #0x0
+ mov r12, r4
+ mov r3, r4
+_020DDF74:
+ mov r5, r12
+ mov lr, r3
+_020DDF7C:
+ ands r2, r5, #0x8000
+ eorne r5, r1, r5, lsl #0x1
+ add lr, lr, #0x1
+ moveq r5, r5, lsl #0x1
+ cmp lr, #0x8
+ blo _020DDF7C
+ mov r2, r4, lsl #0x1
+ add r4, r4, #0x1
+ strh r5, [r0, r2]
+ cmp r4, #0x100
+ add r12, r12, #0x100
+ blo _020DDF74
+ add sp, sp, #0x4
+ ldmia sp!, {r4-r5,lr}
+ bx lr
+
+ arm_func_start MATHi_CRC8Update
+MATHi_CRC8Update:
+ stmdb sp!, {r4,lr}
+ cmp r3, #0x0
+ ldrb r4, [r1, #0x0]
+ mov lr, #0x0
+ bls _020DDFEC
+_020DDFCC:
+ ldrb r12, [r2, #0x0]
+ add lr, lr, #0x1
+ cmp lr, r3
+ eor r12, r4, r12
+ and r12, r12, #0xff
+ add r2, r2, #0x1
+ ldrb r4, [r0, r12]
+ blo _020DDFCC
+_020DDFEC:
+ strb r4, [r1, #0x0]
+ ldmia sp!, {r4,lr}
+ bx lr
+
+ arm_func_start MATHi_CRC8InitTable
+MATHi_CRC8InitTable: ; 0x020DDFF8
+ stmdb sp!, {r4,lr}
+ mov lr, #0x0
+ mov r3, lr
+_020DE004:
+ mov r4, lr
+ mov r12, r3
+_020DE00C:
+ ands r2, r4, #0x80
+ eorne r4, r1, r4, lsl #0x1
+ add r12, r12, #0x1
+ moveq r4, r4, lsl #0x1
+ cmp r12, #0x8
+ blo _020DE00C
+ strb r4, [r0, lr]
+ add lr, lr, #0x1
+ cmp lr, #0x100
+ blo _020DE004
+ ldmia sp!, {r4,lr}
+ bx lr
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