summaryrefslogtreecommitdiff
path: root/ArmPkg/Library/CompilerIntrinsicsLib/Arm/uldiv.S
diff options
context:
space:
mode:
Diffstat (limited to 'ArmPkg/Library/CompilerIntrinsicsLib/Arm/uldiv.S')
-rwxr-xr-xArmPkg/Library/CompilerIntrinsicsLib/Arm/uldiv.S267
1 files changed, 267 insertions, 0 deletions
diff --git a/ArmPkg/Library/CompilerIntrinsicsLib/Arm/uldiv.S b/ArmPkg/Library/CompilerIntrinsicsLib/Arm/uldiv.S
new file mode 100755
index 0000000000..ab2a3b40f7
--- /dev/null
+++ b/ArmPkg/Library/CompilerIntrinsicsLib/Arm/uldiv.S
@@ -0,0 +1,267 @@
+//------------------------------------------------------------------------------
+//
+// Copyright (c) 2008 - 2009, Apple Inc. All rights reserved.<BR>
+//
+// This program and the accompanying materials
+// are licensed and made available under the terms and conditions of the BSD License
+// which accompanies this distribution. The full text of the license may be found at
+// http://opensource.org/licenses/bsd-license.php
+//
+// THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+// WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+//
+//------------------------------------------------------------------------------
+
+
+
+ .text
+ .align 2
+ .globl ASM_PFX(__aeabi_uldivmod)
+
+//
+//UINT64
+//EFIAPI
+//__aeabi_uldivmod (
+// IN UINT64 Dividend
+// IN UINT64 Divisor
+// )
+//
+ASM_PFX(__aeabi_uldivmod):
+ stmdb sp!, {r4, r5, r6, lr}
+ mov r4, r1
+ mov r5, r0
+ mov r6, #0 // 0x0
+ orrs ip, r3, r2, lsr #31
+ bne ASM_PFX(__aeabi_uldivmod_label1)
+ tst r2, r2
+ beq ASM_PFX(_ll_div0)
+ movs ip, r2, lsr #15
+ addeq r6, r6, #16 // 0x10
+ mov ip, r2, lsl r6
+ movs lr, ip, lsr #23
+ moveq ip, ip, lsl #8
+ addeq r6, r6, #8 // 0x8
+ movs lr, ip, lsr #27
+ moveq ip, ip, lsl #4
+ addeq r6, r6, #4 // 0x4
+ movs lr, ip, lsr #29
+ moveq ip, ip, lsl #2
+ addeq r6, r6, #2 // 0x2
+ movs lr, ip, lsr #30
+ moveq ip, ip, lsl #1
+ addeq r6, r6, #1 // 0x1
+ b ASM_PFX(_ll_udiv_small)
+ASM_PFX(__aeabi_uldivmod_label1):
+ tst r3, #-2147483648 // 0x80000000
+ bne ASM_PFX(__aeabi_uldivmod_label2)
+ movs ip, r3, lsr #15
+ addeq r6, r6, #16 // 0x10
+ mov ip, r3, lsl r6
+ movs lr, ip, lsr #23
+ moveq ip, ip, lsl #8
+ addeq r6, r6, #8 // 0x8
+ movs lr, ip, lsr #27
+ moveq ip, ip, lsl #4
+ addeq r6, r6, #4 // 0x4
+ movs lr, ip, lsr #29
+ moveq ip, ip, lsl #2
+ addeq r6, r6, #2 // 0x2
+ movs lr, ip, lsr #30
+ addeq r6, r6, #1 // 0x1
+ rsb r3, r6, #32 // 0x20
+ moveq ip, ip, lsl #1
+ orr ip, ip, r2, lsr r3
+ mov lr, r2, lsl r6
+ b ASM_PFX(_ll_udiv_big)
+ASM_PFX(__aeabi_uldivmod_label2):
+ mov ip, r3
+ mov lr, r2
+ b ASM_PFX(_ll_udiv_ginormous)
+
+ASM_PFX(_ll_udiv_small):
+ cmp r4, ip, lsl #1
+ mov r3, #0 // 0x0
+ subcs r4, r4, ip, lsl #1
+ addcs r3, r3, #2 // 0x2
+ cmp r4, ip
+ subcs r4, r4, ip
+ adcs r3, r3, #0 // 0x0
+ add r2, r6, #32 // 0x20
+ cmp r2, #32 // 0x20
+ rsb ip, ip, #0 // 0x0
+ bcc ASM_PFX(_ll_udiv_small_label1)
+ orrs r0, r4, r5, lsr #30
+ moveq r4, r5
+ moveq r5, #0 // 0x0
+ subeq r2, r2, #32 // 0x20
+ASM_PFX(_ll_udiv_small_label1):
+ mov r1, #0 // 0x0
+ cmp r2, #16 // 0x10
+ bcc ASM_PFX(_ll_udiv_small_label2)
+ movs r0, r4, lsr #14
+ moveq r4, r4, lsl #16
+ addeq r1, r1, #16 // 0x10
+ASM_PFX(_ll_udiv_small_label2):
+ sub lr, r2, r1
+ cmp lr, #8 // 0x8
+ bcc ASM_PFX(_ll_udiv_small_label3)
+ movs r0, r4, lsr #22
+ moveq r4, r4, lsl #8
+ addeq r1, r1, #8 // 0x8
+ASM_PFX(_ll_udiv_small_label3):
+ rsb r0, r1, #32 // 0x20
+ sub r2, r2, r1
+ orr r4, r4, r5, lsr r0
+ mov r5, r5, lsl r1
+ cmp r2, #1 // 0x1
+ bcc ASM_PFX(_ll_udiv_small_label5)
+ sub r2, r2, #1 // 0x1
+ and r0, r2, #7 // 0x7
+ eor r0, r0, #7 // 0x7
+ adds r0, r0, r0, lsl #1
+ add pc, pc, r0, lsl #2
+ nop // (mov r0,r0)
+ASM_PFX(_ll_udiv_small_label4):
+ adcs r5, r5, r5
+ adcs r4, ip, r4, lsl #1
+ rsbcc r4, ip, r4
+ adcs r5, r5, r5
+ adcs r4, ip, r4, lsl #1
+ rsbcc r4, ip, r4
+ adcs r5, r5, r5
+ adcs r4, ip, r4, lsl #1
+ rsbcc r4, ip, r4
+ adcs r5, r5, r5
+ adcs r4, ip, r4, lsl #1
+ rsbcc r4, ip, r4
+ adcs r5, r5, r5
+ adcs r4, ip, r4, lsl #1
+ rsbcc r4, ip, r4
+ adcs r5, r5, r5
+ adcs r4, ip, r4, lsl #1
+ rsbcc r4, ip, r4
+ adcs r5, r5, r5
+ adcs r4, ip, r4, lsl #1
+ rsbcc r4, ip, r4
+ adcs r5, r5, r5
+ adcs r4, ip, r4, lsl #1
+ sub r2, r2, #8 // 0x8
+ tst r2, r2
+ rsbcc r4, ip, r4
+ bpl ASM_PFX(_ll_udiv_small_label4)
+ASM_PFX(_ll_udiv_small_label5):
+ mov r2, r4, lsr r6
+ bic r4, r4, r2, lsl r6
+ adcs r0, r5, r5
+ adc r1, r4, r4
+ add r1, r1, r3, lsl r6
+ mov r3, #0 // 0x0
+ ldmia sp!, {r4, r5, r6, pc}
+
+ASM_PFX(_ll_udiv_big):
+ subs r0, r5, lr
+ mov r3, #0 // 0x0
+ sbcs r1, r4, ip
+ movcs r5, r0
+ movcs r4, r1
+ adcs r3, r3, #0 // 0x0
+ subs r0, r5, lr
+ sbcs r1, r4, ip
+ movcs r5, r0
+ movcs r4, r1
+ adcs r3, r3, #0 // 0x0
+ subs r0, r5, lr
+ sbcs r1, r4, ip
+ movcs r5, r0
+ movcs r4, r1
+ adcs r3, r3, #0 // 0x0
+ mov r1, #0 // 0x0
+ rsbs lr, lr, #0 // 0x0
+ rsc ip, ip, #0 // 0x0
+ cmp r6, #16 // 0x10
+ bcc ASM_PFX(_ll_udiv_big_label1)
+ movs r0, r4, lsr #14
+ moveq r4, r4, lsl #16
+ addeq r1, r1, #16 // 0x10
+ASM_PFX(_ll_udiv_big_label1):
+ sub r2, r6, r1
+ cmp r2, #8 // 0x8
+ bcc ASM_PFX(_ll_udiv_big_label2)
+ movs r0, r4, lsr #22
+ moveq r4, r4, lsl #8
+ addeq r1, r1, #8 // 0x8
+ASM_PFX(_ll_udiv_big_label2):
+ rsb r0, r1, #32 // 0x20
+ sub r2, r6, r1
+ orr r4, r4, r5, lsr r0
+ mov r5, r5, lsl r1
+ cmp r2, #1 // 0x1
+ bcc ASM_PFX(_ll_udiv_big_label4)
+ sub r2, r2, #1 // 0x1
+ and r0, r2, #3 // 0x3
+ rsb r0, r0, #3 // 0x3
+ adds r0, r0, r0, lsl #1
+ add pc, pc, r0, lsl #3
+ nop // (mov r0,r0)
+ASM_PFX(_ll_udiv_big_label3):
+ adcs r5, r5, r5
+ adcs r4, r4, r4
+ adcs r0, lr, r5
+ adcs r1, ip, r4
+ movcs r5, r0
+ movcs r4, r1
+ adcs r5, r5, r5
+ adcs r4, r4, r4
+ adcs r0, lr, r5
+ adcs r1, ip, r4
+ movcs r5, r0
+ movcs r4, r1
+ adcs r5, r5, r5
+ adcs r4, r4, r4
+ adcs r0, lr, r5
+ adcs r1, ip, r4
+ movcs r5, r0
+ movcs r4, r1
+ sub r2, r2, #4 // 0x4
+ adcs r5, r5, r5
+ adcs r4, r4, r4
+ adcs r0, lr, r5
+ adcs r1, ip, r4
+ tst r2, r2
+ movcs r5, r0
+ movcs r4, r1
+ bpl ASM_PFX(_ll_udiv_big_label3)
+ASM_PFX(_ll_udiv_big_label4):
+ mov r1, #0 // 0x0
+ mov r2, r5, lsr r6
+ bic r5, r5, r2, lsl r6
+ adcs r0, r5, r5
+ adc r1, r1, #0 // 0x0
+ movs lr, r3, lsl r6
+ mov r3, r4, lsr r6
+ bic r4, r4, r3, lsl r6
+ adc r1, r1, #0 // 0x0
+ adds r0, r0, lr
+ orr r2, r2, r4, ror r6
+ adc r1, r1, #0 // 0x0
+ ldmia sp!, {r4, r5, r6, pc}
+
+ASM_PFX(_ll_udiv_ginormous):
+ subs r2, r5, lr
+ mov r1, #0 // 0x0
+ sbcs r3, r4, ip
+ adc r0, r1, r1
+ movcc r2, r5
+ movcc r3, r4
+ ldmia sp!, {r4, r5, r6, pc}
+
+ASM_PFX(_ll_div0):
+ ldmia sp!, {r4, r5, r6, lr}
+ mov r0, #0 // 0x0
+ mov r1, #0 // 0x0
+ b ASM_PFX(__aeabi_ldiv0)
+
+ASM_PFX(__aeabi_ldiv0):
+ BX r14
+
+
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-29 13:28:47 +0000