diff options
Diffstat (limited to 'arm9/asm/MSL_math.s')
| -rw-r--r-- | arm9/asm/MSL_math.s | 116 |
1 files changed, 102 insertions, 14 deletions
diff --git a/arm9/asm/MSL_math.s b/arm9/asm/MSL_math.s index 36bb4071..862edb08 100644 --- a/arm9/asm/MSL_math.s +++ b/arm9/asm/MSL_math.s @@ -1,22 +1,110 @@ .include "global.inc"
.include "asm/macros.inc"
- .extern __float_nan
.text
- arm_func_start nan
-nan: ; 0x020DE2E4
- ldr r0, _020DE2F4 ; =__float_nan
- ldr ip, _020DE2F8 ; =_f2d
- ldr r0, [r0, #0x0]
- bx r12
+ arm_func_start __msl_generic_count_bits64
+__msl_generic_count_bits64: ; 0x020E998C
+ mov r3, r0, lsr #0x1
+ ldr r2, _020E9A14 ; =0x55555555
+ orr r3, r3, r1, lsl #0x1f
+ and r3, r3, r2
+ subs r12, r0, r3
+ and r2, r2, r1, lsr #0x1
+ ldr r0, _020E9A18 ; =0x33333333
+ sbc r3, r1, r2
+ mov r1, r12, lsr #0x2
+ orr r1, r1, r3, lsl #0x1e
+ and r2, r12, r0
+ and r1, r1, r0
+ adds r2, r2, r1
+ and r1, r3, r0
+ and r0, r0, r3, lsr #0x2
+ adc r1, r1, r0
+ mov r0, r2, lsr #0x4
+ orr r0, r0, r1, lsl #0x1c
+ adds r2, r2, r0
+ ldr r0, _020E9A1C ; =0x0F0F0F0F
+ adc r1, r1, r1, lsr #0x4
+ and r3, r2, r0
+ and r2, r1, r0
+ mov r0, r3, lsr #0x8
+ orr r0, r0, r2, lsl #0x18
+ adds r1, r3, r0
+ adc r2, r2, r2, lsr #0x8
+ mov r0, r1, lsr #0x10
+ orr r0, r0, r2, lsl #0x10
+ adds r1, r1, r0
+ adc r0, r2, r2, lsr #0x10
+ adds r0, r1, r0
+ and r0, r0, #0xff
+ bx lr
.balign 4
-_020DE2F4: .word __float_nan
-_020DE2F8: .word _f2d
- arm_func_end nan
+_020E9A14: .word 0x55555555
+_020E9A18: .word 0x33333333
+_020E9A1C: .word 0x0F0F0F0F
+ arm_func_end __msl_generic_count_bits64
- .section .exceptix,4
+ arm_func_start __signbitf
+__signbitf:
+ stmdb sp!, {r0-r3}
+ ldr r0, [sp, #0x4]
+ and r0, r0, #0x80000000
+ add sp, sp, #0x10
+ bx lr
+ arm_func_end __signbitf
+
+ arm_func_start __fpclassifyf
+__fpclassifyf: ; 0x020E9A34
+ stmdb sp!, {r0-r3}
+ ldr r2, [sp, #0x4]
+ ldr r0, _020E9A9C ; =0x7FF00000
+ ands r1, r2, r0
+ beq _020E9A70
+ cmp r1, r0
+ bne _020E9A90
+ ldr r0, _020E9AA0 ; =0x000FFFFF
+ tst r2, r0
+ ldreq r0, [sp, #0x0]
+ add sp, sp, #0x10
+ cmpeq r0, #0x0
+ movne r0, #0x1
+ moveq r0, #0x2
+ bx lr
+_020E9A70:
+ ldr r0, _020E9AA0 ; =0x000FFFFF
+ tst r2, r0
+ ldreq r0, [sp, #0x0]
+ add sp, sp, #0x10
+ cmpeq r0, #0x0
+ movne r0, #0x5
+ moveq r0, #0x3
+ bx lr
+_020E9A90:
+ mov r0, #0x4
+ add sp, sp, #0x10
+ bx lr
+ .balign 4
+_020E9A9C: .word 0x7FF00000
+_020E9AA0: .word 0x000FFFFF
+ arm_func_end __fpclassifyf
- .word nan
- .short 25
- .word 0x00000000
+ arm_func_start scalbn
+scalbn: ; 0x020E9AA4
+ stmdb sp!, {r3-r4,lr}
+ sub sp, sp, #0x4
+ mov r4, r2
+ add r2, sp, #0x0
+ bl frexp
+ ldr r2, [sp, #0x0]
+ add r2, r2, r4
+ str r2, [sp, #0x0]
+ bl ldexp
+ add sp, sp, #0x4
+ ldmia sp!, {r3-r4,pc}
+ arm_func_end scalbn
+
+ .section .exceptix,4
+ .word scalbn
+ .short 45
+ .word 0x00200100
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