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#------------------------------------------------------------------------------
#
# Replacement for Math64.c that is coded to use older GCC intrinsics.
# Doing this reduces the number of intrinsics that are required when
# you port to a new version of gcc.
#
# Need to split this into multple files to size optimize the image.
#
# Copyright (c) 2009 - 2010, 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
GCC_ASM_EXPORT(InternalMathLShiftU64)
ASM_PFX(InternalMathLShiftU64):
stmfd sp!, {r4, r5, r6}
mov r6, r1
rsb ip, r2, #32
mov r4, r6, asl r2
subs r1, r2, #32
orr r4, r4, r0, lsr ip
mov r3, r0, asl r2
movpl r4, r0, asl r1
mov r5, r0
mov r0, r3
mov r1, r4
ldmfd sp!, {r4, r5, r6}
bx lr
.align 2
GCC_ASM_EXPORT(InternalMathRShiftU64)
ASM_PFX(InternalMathRShiftU64):
stmfd sp!, {r4, r5, r6}
mov r5, r0
rsb ip, r2, #32
mov r3, r5, lsr r2
subs r0, r2, #32
orr r3, r3, r1, asl ip
mov r4, r1, lsr r2
movpl r3, r1, lsr r0
mov r6, r1
mov r0, r3
mov r1, r4
ldmfd sp!, {r4, r5, r6}
bx lr
.align 2
GCC_ASM_EXPORT(InternalMathARShiftU64)
ASM_PFX(InternalMathARShiftU64):
stmfd sp!, {r4, r5, r6}
mov r5, r0
rsb ip, r2, #32
mov r3, r5, lsr r2
subs r0, r2, #32
orr r3, r3, r1, asl ip
mov r4, r1, asr r2
movpl r3, r1, asr r0
mov r6, r1
mov r0, r3
mov r1, r4
ldmfd sp!, {r4, r5, r6}
bx lr
.align 2
GCC_ASM_EXPORT(InternalMathLRotU64)
ASM_PFX(InternalMathLRotU64):
stmfd sp!, {r4, r5, r6, r7, lr}
add r7, sp, #12
mov r6, r1
rsb ip, r2, #32
mov r4, r6, asl r2
rsb lr, r2, #64
subs r1, r2, #32
orr r4, r4, r0, lsr ip
mov r3, r0, asl r2
movpl r4, r0, asl r1
sub ip, r2, #32
mov r5, r0
mov r0, r0, lsr lr
rsbs r2, r2, #32
orr r0, r0, r6, asl ip
mov r1, r6, lsr lr
movpl r0, r6, lsr r2
orr r1, r1, r4
orr r0, r0, r3
ldmfd sp!, {r4, r5, r6, r7, pc}
.align 2
GCC_ASM_EXPORT(InternalMathRRotU64)
ASM_PFX(InternalMathRRotU64):
stmfd sp!, {r4, r5, r6, r7, lr}
add r7, sp, #12
mov r5, r0
rsb ip, r2, #32
mov r3, r5, lsr r2
rsb lr, r2, #64
subs r0, r2, #32
orr r3, r3, r1, asl ip
mov r4, r1, lsr r2
movpl r3, r1, lsr r0
sub ip, r2, #32
mov r6, r1
mov r1, r1, asl lr
rsbs r2, r2, #32
orr r1, r1, r5, lsr ip
mov r0, r5, asl lr
movpl r1, r5, asl r2
orr r0, r0, r3
orr r1, r1, r4
ldmfd sp!, {r4, r5, r6, r7, pc}
.align 2
GCC_ASM_EXPORT(InternalMathMultU64x32)
ASM_PFX(InternalMathMultU64x32):
stmfd sp!, {r7, lr}
add r7, sp, #0
mov r3, #0
mov ip, r0
mov lr, r1
umull r0, r1, ip, r2
mla r1, lr, r2, r1
mla r1, ip, r3, r1
ldmfd sp!, {r7, pc}
.align 2
GCC_ASM_EXPORT(InternalMathMultU64x64)
ASM_PFX(InternalMathMultU64x64):
stmfd sp!, {r7, lr}
add r7, sp, #0
mov ip, r0
mov lr, r1
umull r0, r1, ip, r2
mla r1, lr, r2, r1
mla r1, ip, r3, r1
ldmfd sp!, {r7, pc}
.align 2
GCC_ASM_EXPORT(InternalMathDivU64x32)
ASM_PFX(InternalMathDivU64x32):
stmfd sp!, {r7, lr}
add r7, sp, #0
mov r3, #0
bl ASM_PFX(__udivdi3)
ldmfd sp!, {r7, pc}
.align 2
GCC_ASM_EXPORT(InternalMathModU64x32)
ASM_PFX(InternalMathModU64x32):
stmfd sp!, {r7, lr}
add r7, sp, #0
mov r3, #0
bl ASM_PFX(__umoddi3)
ldmfd sp!, {r7, pc}
.align 2
GCC_ASM_EXPORT(InternalMathDivRemU64x32)
ASM_PFX(InternalMathDivRemU64x32):
stmfd sp!, {r4, r5, r6, r7, lr}
add r7, sp, #12
stmfd sp!, {r10, r11}
subs r6, r3, #0
mov r10, r0
mov r11, r1
moveq r4, r2
moveq r5, #0
beq L22
mov r4, r2
mov r5, #0
mov r3, #0
bl ASM_PFX(__umoddi3)
str r0, [r6, #0]
L22:
mov r0, r10
mov r1, r11
mov r2, r4
mov r3, r5
bl ASM_PFX(__udivdi3)
ldmfd sp!, {r10, r11}
ldmfd sp!, {r4, r5, r6, r7, pc}
.align 2
GCC_ASM_EXPORT(InternalMathDivRemU64x64)
ASM_PFX(InternalMathDivRemU64x64):
stmfd sp!, {r4, r5, r6, r7, lr}
add r7, sp, #12
stmfd sp!, {r10, r11}
ldr r6, [sp, #28]
mov r4, r0
cmp r6, #0
mov r5, r1
mov r10, r2
mov r11, r3
beq L26
bl ASM_PFX(__umoddi3)
stmia r6, {r0-r1}
L26:
mov r0, r4
mov r1, r5
mov r2, r10
mov r3, r11
bl ASM_PFX(__udivdi3)
ldmfd sp!, {r10, r11}
ldmfd sp!, {r4, r5, r6, r7, pc}
.align 2
GCC_ASM_EXPORT(InternalMathDivRemS64x64)
ASM_PFX(InternalMathDivRemS64x64):
stmfd sp!, {r4, r5, r6, r7, lr}
add r7, sp, #12
stmfd sp!, {r10, r11}
ldr r6, [sp, #28]
mov r4, r0
cmp r6, #0
mov r5, r1
mov r10, r2
mov r11, r3
beq L30
bl ASM_PFX(__moddi3)
stmia r6, {r0-r1}
L30:
mov r0, r4
mov r1, r5
mov r2, r10
mov r3, r11
bl ASM_PFX(__divdi3)
ldmfd sp!, {r10, r11}
ldmfd sp!, {r4, r5, r6, r7, pc}
.align 2
GCC_ASM_EXPORT(InternalMathSwapBytes64)
ASM_PFX(InternalMathSwapBytes64):
stmfd sp!, {r4, r5, r7, lr}
mov r5, r1
bl ASM_PFX(SwapBytes32)
mov r4, r0
mov r0, r5
bl ASM_PFX(SwapBytes32)
mov r1, r4
ldmfd sp!, {r4, r5, r7, pc}
ASM_FUNCTION_REMOVE_IF_UNREFERENCED
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