| /* |
| * 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 |