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15658.mc

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; Assembly listing for method System.Security.Cryptography.CryptographicOperations:FixedTimeEquals(System.ReadOnlySpan`1[ubyte],System.ReadOnlySpan`1[ubyte]):ubyte (MinOpts)

; Emitting BLENDED_CODE for generic ARM64 - Windows

; MinOpts code

; fp based frame

; partially interruptible

G_M000_IG01:

stp fp, lr, [sp, #-0x50]!

stp fp, lr, [sp, #-0x60]!

mov fp, sp

str x0, [fp, #0x40] //

str x0, [fp, #0x50] //

str x1, [fp, #0x48] //

str x1, [fp, #0x58] //

str x2, [fp, #0x30] //

str x2, [fp, #0x40] //

str x3, [fp, #0x38] //

str x3, [fp, #0x48] //

G_M000_IG02:

add x0, fp, #80 //

str x0, [fp, #0x1C] //

movz x0, #0xD1FFAB1E

movk x0, #0xD1FFAB1E LSL #16

movk x0, #0xD1FFAB1E LSL #32

ldr x0, [x0]

str x0, [fp, #0x14] //

ldr x0, [fp, #0x1C] //

ldr x1, [fp, #0x14] //

blr x1

str w0, [fp, #0x30] //

add x0, fp, #64 //

movz x1, #0xD1FFAB1E

str x0, [fp, #0x14] //

movk x1, #0xD1FFAB1E LSL #16

movz x0, #0xD1FFAB1E

movk x1, #0xD1FFAB1E LSL #32

movk x0, #0xD1FFAB1E LSL #16

ldr x1, [x1]

movk x0, #0xD1FFAB1E LSL #32

blr x1

ldr x0, [x0]

str w0, [fp, #0x20] //

str x0, [fp, #0x1C] //

add x0, fp, #48 //

ldr x0, [fp, #0x14] //

movz x1, #0xD1FFAB1E

ldr x1, [fp, #0x1C] //

movk x1, #0xD1FFAB1E LSL #16

movk x1, #0xD1FFAB1E LSL #32

ldr x1, [x1]

blr x1

ldr w1, [fp, #0x20] //

str w0, [fp, #0x28] //

ldr w0, [fp, #0x30] //

str w0, [fp, #0x24] //

ldr w0, [fp, #0x28] //

ldr w1, [fp, #0x24] //

cmp w0, w1

beq G_M000_IG04

mov w0, wzr

G_M000_IG03:

ldp fp, lr, [sp], #0x50

ldp fp, lr, [sp], #0x60

ret lr

G_M000_IG04:

add x0, fp, #64 //

add x0, fp, #80 //

movz x1, #0xD1FFAB1E

str x0, [fp, #0x1C] //

movk x1, #0xD1FFAB1E LSL #16

movz x0, #0xD1FFAB1E

movk x1, #0xD1FFAB1E LSL #32

movk x0, #0xD1FFAB1E LSL #16

ldr x1, [x1]

movk x0, #0xD1FFAB1E LSL #32

ldr x0, [x0]

str x0, [fp, #0x14] //

ldr x0, [fp, #0x1C] //

ldr x1, [fp, #0x14] //

blr x1

str w0, [fp, #0x2C] //

str w0, [fp, #0x3C] //

str wzr, [fp, #0x28] //

str wzr, [fp, #0x38] //

str wzr, [fp, #0x24] //

str wzr, [fp, #0x34] //

b G_M000_IG06

G_M000_IG05:

add x0, fp, #64 //

add x0, fp, #80 //

ldr w1, [fp, #0x24] //

str x0, [fp, #0x14] //

movz x2, #0xD1FFAB1E

ldr w1, [fp, #0x34] //

movk x2, #0xD1FFAB1E LSL #16

movz x0, #0xD1FFAB1E

movk x2, #0xD1FFAB1E LSL #32

movk x0, #0xD1FFAB1E LSL #16

ldr x2, [x2]

movk x0, #0xD1FFAB1E LSL #32

ldr x0, [x0]

str x0, [fp, #0x1C] //

ldr x0, [fp, #0x14] //

ldr x2, [fp, #0x1C] //

blr x2

ldrb w0, [x0]

str w0, [fp, #0x1C] //

str w0, [fp, #0x2C] //

add x0, fp, #48 //

add x0, fp, #64 //

ldr w1, [fp, #0x24] //

str x0, [fp, #0x1C] //

movz x2, #0xD1FFAB1E

ldr w1, [fp, #0x34] //

movk x2, #0xD1FFAB1E LSL #16

movz x0, #0xD1FFAB1E

movk x2, #0xD1FFAB1E LSL #32

movk x0, #0xD1FFAB1E LSL #16

ldr x2, [x2]

movk x0, #0xD1FFAB1E LSL #32

ldr x0, [x0]

str x0, [fp, #0x14] //

ldr x0, [fp, #0x1C] //

ldr x2, [fp, #0x14] //

blr x2

ldrb w0, [x0]

ldr w1, [fp, #0x1C] //

str w0, [fp, #0x24] //

sub w0, w1, w0

ldr w0, [fp, #0x2C] //

ldr w1, [fp, #0x28] //

ldrb w1, [fp, #0x24] //

orr w0, w0, w1

sub w0, w0, w1

str w0, [fp, #0x24] //

ldr w0, [fp, #0x38] //

str w0, [fp, #0x28] //

ldr w0, [fp, #0x24] //

ldr w1, [fp, #0x28] //

orr w0, w0, w1

str w0, [fp, #0x38] //

ldr w0, [fp, #0x34] //

add w0, w0, #1

str w0, [fp, #0x24] //

str w0, [fp, #0x34] //

G_M000_IG06:

ldr w0, [fp, #0x24] //

ldr w0, [fp, #0x34] //

ldr w1, [fp, #0x2C] //

str w0, [fp, #0x28] //

ldr w0, [fp, #0x3C] //

str w0, [fp, #0x24] //

ldr w0, [fp, #0x28] //

ldr w1, [fp, #0x24] //

cmp w0, w1

blt G_M000_IG05

ldr w0, [fp, #0x28] //

ldr w0, [fp, #0x38] //

cmp w0, #0

cset x0, eq

G_M000_IG07:

ldp fp, lr, [sp], #0x50

ldp fp, lr, [sp], #0x60

ret lr

; Total bytes of code 276

; Total bytes of code 412

저장된 비교 결과

원본

파일 열기

; Assembly listing for method System.Security.Cryptography.CryptographicOperations:FixedTimeEquals(System.ReadOnlySpan`1[ubyte],System.ReadOnlySpan`1[ubyte]):ubyte (MinOpts)
; Emitting BLENDED_CODE for generic ARM64 - Windows
; MinOpts code
; fp based frame
; partially interruptible

G_M000_IG01:
            stp     fp, lr, [sp, #-0x50]!
            mov     fp, sp
            str     x0, [fp, #0x40]	// 
            str     x1, [fp, #0x48]	// 
            str     x2, [fp, #0x30]	// 
            str     x3, [fp, #0x38]	// 
 
G_M000_IG02:
            add     x0, fp, #64	// 
            movz    x1, #0xD1FFAB1E
            movk    x1, #0xD1FFAB1E LSL #16
            movk    x1, #0xD1FFAB1E LSL #32
            ldr     x1, [x1]
            blr     x1
            str     w0, [fp, #0x20]	// 
            add     x0, fp, #48	// 
            movz    x1, #0xD1FFAB1E
            movk    x1, #0xD1FFAB1E LSL #16
            movk    x1, #0xD1FFAB1E LSL #32
            ldr     x1, [x1]
            blr     x1
            ldr     w1, [fp, #0x20]	// 
            cmp     w0, w1
            beq     G_M000_IG04
            mov     w0, wzr
 
G_M000_IG03:
            ldp     fp, lr, [sp], #0x50
            ret     lr
 
G_M000_IG04:
            add     x0, fp, #64	// 
            movz    x1, #0xD1FFAB1E
            movk    x1, #0xD1FFAB1E LSL #16
            movk    x1, #0xD1FFAB1E LSL #32
            ldr     x1, [x1]
            blr     x1
            str     w0, [fp, #0x2C]	// 
            str     wzr, [fp, #0x28]	// 
            str     wzr, [fp, #0x24]	// 
            b       G_M000_IG06
 
G_M000_IG05:
            add     x0, fp, #64	// 
            ldr     w1, [fp, #0x24]	// 
            movz    x2, #0xD1FFAB1E
            movk    x2, #0xD1FFAB1E LSL #16
            movk    x2, #0xD1FFAB1E LSL #32
            ldr     x2, [x2]
            blr     x2
            ldrb    w0, [x0]
            str     w0, [fp, #0x1C]	// 
            add     x0, fp, #48	// 
            ldr     w1, [fp, #0x24]	// 
            movz    x2, #0xD1FFAB1E
            movk    x2, #0xD1FFAB1E LSL #16
            movk    x2, #0xD1FFAB1E LSL #32
            ldr     x2, [x2]
            blr     x2
            ldrb    w0, [x0]
            ldr     w1, [fp, #0x1C]	// 
            sub     w0, w1, w0
            ldr     w1, [fp, #0x28]	// 
            orr     w0, w0, w1
            str     w0, [fp, #0x28]	// 
            ldr     w0, [fp, #0x24]	// 
            add     w0, w0, #1
            str     w0, [fp, #0x24]	// 
 
G_M000_IG06:
            ldr     w0, [fp, #0x24]	// 
            ldr     w1, [fp, #0x2C]	// 
            cmp     w0, w1
            blt     G_M000_IG05
            ldr     w0, [fp, #0x28]	// 
            cmp     w0, #0
            cset    x0, eq
 
G_M000_IG07:
            ldp     fp, lr, [sp], #0x50
            ret     lr
 
; Total bytes of code 276

수정본

파일 열기

G_M000_IG01:
            stp     fp, lr, [sp, #-0x60]!
            mov     fp, sp
            str     x0, [fp, #0x50]	// 
            str     x1, [fp, #0x58]	// 
            str     x2, [fp, #0x40]	// 
            str     x3, [fp, #0x48]	// 
 
G_M000_IG02:
            add     x0, fp, #80	// 
            str     x0, [fp, #0x1C]	// 
            movz    x0, #0xD1FFAB1E
            movk    x0, #0xD1FFAB1E LSL #16
            movk    x0, #0xD1FFAB1E LSL #32
            ldr     x0, [x0]
            str     x0, [fp, #0x14]	// 
            ldr     x0, [fp, #0x1C]	// 
            ldr     x1, [fp, #0x14]	// 
            blr     x1
            str     w0, [fp, #0x30]	// 
            add     x0, fp, #64	// 
            str     x0, [fp, #0x14]	// 
            movz    x0, #0xD1FFAB1E
            movk    x0, #0xD1FFAB1E LSL #16
            movk    x0, #0xD1FFAB1E LSL #32
            ldr     x0, [x0]
            str     x0, [fp, #0x1C]	// 
            ldr     x0, [fp, #0x14]	// 
            ldr     x1, [fp, #0x1C]	// 
            blr     x1
            str     w0, [fp, #0x28]	// 
            ldr     w0, [fp, #0x30]	// 
            str     w0, [fp, #0x24]	// 
            ldr     w0, [fp, #0x28]	// 
            ldr     w1, [fp, #0x24]	// 
            cmp     w0, w1
            beq     G_M000_IG04
            mov     w0, wzr
 
G_M000_IG03:
            ldp     fp, lr, [sp], #0x60
            ret     lr
 
G_M000_IG04:
            add     x0, fp, #80	// 
            str     x0, [fp, #0x1C]	// 
            movz    x0, #0xD1FFAB1E
            movk    x0, #0xD1FFAB1E LSL #16
            movk    x0, #0xD1FFAB1E LSL #32
            ldr     x0, [x0]
            str     x0, [fp, #0x14]	// 
            ldr     x0, [fp, #0x1C]	// 
            ldr     x1, [fp, #0x14]	// 
            blr     x1
            str     w0, [fp, #0x3C]	// 
            str     wzr, [fp, #0x38]	// 
            str     wzr, [fp, #0x34]	// 
            b       G_M000_IG06
 
G_M000_IG05:
            add     x0, fp, #80	// 
            str     x0, [fp, #0x14]	// 
            ldr     w1, [fp, #0x34]	// 
            movz    x0, #0xD1FFAB1E
            movk    x0, #0xD1FFAB1E LSL #16
            movk    x0, #0xD1FFAB1E LSL #32
            ldr     x0, [x0]
            str     x0, [fp, #0x1C]	// 
            ldr     x0, [fp, #0x14]	// 
            ldr     x2, [fp, #0x1C]	// 
            blr     x2
            ldrb    w0, [x0]
            str     w0, [fp, #0x2C]	// 
            add     x0, fp, #64	// 
            str     x0, [fp, #0x1C]	// 
            ldr     w1, [fp, #0x34]	// 
            movz    x0, #0xD1FFAB1E
            movk    x0, #0xD1FFAB1E LSL #16
            movk    x0, #0xD1FFAB1E LSL #32
            ldr     x0, [x0]
            str     x0, [fp, #0x14]	// 
            ldr     x0, [fp, #0x1C]	// 
            ldr     x2, [fp, #0x14]	// 
            blr     x2
            ldrb    w0, [x0]
            str     w0, [fp, #0x24]	// 
            ldr     w0, [fp, #0x2C]	// 
            ldrb    w1, [fp, #0x24]	// 
            sub     w0, w0, w1
            str     w0, [fp, #0x24]	// 
            ldr     w0, [fp, #0x38]	// 
            str     w0, [fp, #0x28]	// 
            ldr     w0, [fp, #0x24]	// 
            ldr     w1, [fp, #0x28]	// 
            orr     w0, w0, w1
            str     w0, [fp, #0x38]	// 
            ldr     w0, [fp, #0x34]	// 
            add     w0, w0, #1
            str     w0, [fp, #0x34]	// 
 
G_M000_IG06:
            ldr     w0, [fp, #0x34]	// 
            str     w0, [fp, #0x28]	// 
            ldr     w0, [fp, #0x3C]	// 
            str     w0, [fp, #0x24]	// 
            ldr     w0, [fp, #0x28]	// 
            ldr     w1, [fp, #0x24]	// 
            cmp     w0, w1
            blt     G_M000_IG05
            ldr     w0, [fp, #0x38]	// 
            cmp     w0, #0
            cset    x0, eq
 
G_M000_IG07:
            ldp     fp, lr, [sp], #0x60
            ret     lr
 
; Total bytes of code 412