| //===-- aeabi_uidivmod.S - EABI uidivmod implementation -------------------===// |
| // |
| // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
| // See https://llvm.org/LICENSE.txt for license information. |
| // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #include "../assembly.h" |
| |
| // struct { unsigned quot, unsigned rem} |
| // __aeabi_uidivmod(unsigned numerator, unsigned denominator) { |
| // unsigned rem, quot; |
| // quot = __udivmodsi4(numerator, denominator, &rem); |
| // return {quot, rem}; |
| // } |
| |
| #if defined(__MINGW32__) |
| #define __aeabi_uidivmod __rt_udiv |
| #endif |
| |
| .syntax unified |
| .text |
| DEFINE_CODE_STATE |
| .p2align 2 |
| DEFINE_COMPILERRT_FUNCTION(__aeabi_uidivmod) |
| #if defined(USE_THUMB_1) |
| cmp r0, r1 |
| bcc LOCAL_LABEL(case_denom_larger) |
| push {r0, r1, lr} |
| bl SYMBOL_NAME(__aeabi_uidiv) |
| pop {r1, r2, r3} |
| muls r2, r0, r2 // r2 = quot * denom |
| subs r1, r1, r2 |
| JMP (r3) |
| LOCAL_LABEL(case_denom_larger): |
| movs r1, r0 |
| movs r0, #0 |
| JMP (lr) |
| #else // defined(USE_THUMB_1) |
| push { lr } |
| sub sp, sp, #4 |
| mov r2, sp |
| #if defined(__MINGW32__) |
| mov r3, r0 |
| mov r0, r1 |
| mov r1, r3 |
| #endif |
| bl SYMBOL_NAME(__udivmodsi4) |
| ldr r1, [sp] |
| add sp, sp, #4 |
| pop { pc } |
| #endif |
| END_COMPILERRT_FUNCTION(__aeabi_uidivmod) |
| |
| NO_EXEC_STACK_DIRECTIVE |
| |
