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/*
* GRUB -- GRand Unified Bootloader
* Copyright (C) 2013 Free Software Foundation, Inc.
*
* GRUB is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* GRUB is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GRUB. If not, see <http://www.gnu.org/licenses/>.
*/
#include <grub/symbol.h>
#include <grub/dl.h>
.file "misc.S"
.text
.syntax unified
#if !defined (__thumb2__)
.arm
#else
.thumb
#endif
.align 2
FUNCTION(__muldi3)
FUNCTION(__aeabi_lmul)
stmfd sp!, {r4, fp}
add fp, sp, #4
sub sp, sp, #16
str r0, [fp, #-12]
str r1, [fp, #-8]
str r2, [fp, #-20]
str r3, [fp, #-16]
ldr r3, [fp, #-8]
ldr r2, [fp, #-20]
mul r2, r3, r2
ldr r3, [fp, #-16]
ldr r1, [fp, #-12]
mul r3, r1, r3
add r2, r2, r3
ldr r0, [fp, #-12]
ldr r1, [fp, #-20]
umull r3, r4, r0, r1
add r2, r2, r4
mov r4, r2
mov r0, r3
mov r1, r4
mov sp, fp
sub sp, sp, #4
ldmfd sp!, {r4, fp}
bx lr
.macro division32 parent
sub sp, sp, #8 @ Allocate naturally aligned 64-bit space
stmfd sp!, {r3,lr} @ Dummy r3 to maintain stack alignment
add r2, sp, #8 @ Set r2 to address of 64-bit space
bl \parent
ldr r1, [sp, #8] @ Extract remainder
ldmfd sp!, {r3,lr} @ Pop into an unused arg/scratch register
add sp, sp, #8
bx lr
.endm
FUNCTION(__aeabi_uidivmod)
division32 grub_divmod32
FUNCTION(__aeabi_idivmod)
division32 grub_divmod32s
/*
* Null divide-by-zero handler
*/
FUNCTION(__aeabi_unwind_cpp_pr0)
FUNCTION(raise)
mov r0, #0
bx lr
END
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