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1a4d82fc JJ |
1 | //===-- aeabi_uidivmod.S - EABI uidivmod implementation -------------------===// |
2 | // | |
3 | // The LLVM Compiler Infrastructure | |
4 | // | |
5 | // This file is dual licensed under the MIT and the University of Illinois Open | |
6 | // Source Licenses. See LICENSE.TXT for details. | |
7 | // | |
8 | //===----------------------------------------------------------------------===// | |
9 | ||
10 | #include "../assembly.h" | |
11 | ||
12 | // struct { unsigned quot, unsigned rem} | |
13 | // __aeabi_uidivmod(unsigned numerator, unsigned denominator) { | |
14 | // unsigned rem, quot; | |
15 | // quot = __udivmodsi4(numerator, denominator, &rem); | |
16 | // return {quot, rem}; | |
17 | // } | |
18 | ||
7cac9316 XL |
19 | #if defined(__MINGW32__) |
20 | #define __aeabi_uidivmod __rt_udiv | |
21 | #endif | |
22 | ||
1a4d82fc | 23 | .syntax unified |
2c00a5a8 XL |
24 | .text |
25 | DEFINE_CODE_STATE | |
92a42be0 | 26 | .p2align 2 |
1a4d82fc | 27 | DEFINE_COMPILERRT_FUNCTION(__aeabi_uidivmod) |
2c00a5a8 | 28 | #if defined(USE_THUMB_1) |
7cac9316 XL |
29 | cmp r0, r1 |
30 | bcc LOCAL_LABEL(case_denom_larger) | |
31 | push {r0, r1, lr} | |
32 | bl SYMBOL_NAME(__aeabi_uidiv) | |
33 | pop {r1, r2, r3} | |
2c00a5a8 | 34 | muls r2, r0, r2 // r2 = quot * denom |
7cac9316 XL |
35 | subs r1, r1, r2 |
36 | JMP (r3) | |
37 | LOCAL_LABEL(case_denom_larger): | |
38 | movs r1, r0 | |
39 | movs r0, #0 | |
40 | JMP (lr) | |
2c00a5a8 | 41 | #else // defined(USE_THUMB_1) |
1a4d82fc JJ |
42 | push { lr } |
43 | sub sp, sp, #4 | |
44 | mov r2, sp | |
7cac9316 XL |
45 | #if defined(__MINGW32__) |
46 | mov r3, r0 | |
47 | mov r0, r1 | |
48 | mov r1, r3 | |
49 | #endif | |
1a4d82fc JJ |
50 | bl SYMBOL_NAME(__udivmodsi4) |
51 | ldr r1, [sp] | |
52 | add sp, sp, #4 | |
53 | pop { pc } | |
7cac9316 | 54 | #endif |
1a4d82fc | 55 | END_COMPILERRT_FUNCTION(__aeabi_uidivmod) |
3157f602 XL |
56 | |
57 | NO_EXEC_STACK_DIRECTIVE | |
58 |