| 1 | // REQUIRES: arm-target-arch || armv6m-target-arch |
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| 2 | // RUN: %clang_builtins %s %librt -o %t && %run %t |
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| 3 | |
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| 4 | #include "int_lib.h" |
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| 5 | #include <stdio.h> |
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| 6 | |
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| 7 | #if __arm__ |
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| 8 | // Based on divmodsi4_test.c |
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| 9 | |
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| 10 | extern du_int __aeabi_idivmod(si_int a, si_int b); |
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| 11 | |
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| 12 | int test__aeabi_idivmod(si_int a, si_int b, |
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| 13 | si_int expected_result, si_int expected_rem) |
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| 14 | { |
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| 15 | si_int rem; |
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| 16 | du_int ret = __aeabi_idivmod(a, b); |
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| 17 | // __aeabi_idivmod actually returns a struct { quotient; remainder; } using |
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| 18 | // value_in_regs calling convention. Due to the ABI rules, struct fields |
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| 19 | // come in the same order regardless of endianness. However since the |
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| 20 | // result is received here as a 64-bit integer, in which endianness does |
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| 21 | // matter, the position of each component (quotient and remainder) varies |
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| 22 | // depending on endianness. |
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| 23 | # if _YUGA_BIG_ENDIAN |
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| 24 | rem = ret & 0xFFFFFFFF; |
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| 25 | si_int result = ret >> 32; |
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| 26 | # else |
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| 27 | rem = ret >> 32; |
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| 28 | si_int result = ret & 0xFFFFFFFF; |
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| 29 | # endif |
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| 30 | if (result != expected_result) { |
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| 31 | printf("error in __aeabi_idivmod: %d / %d = %d, expected %d\n" , |
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| 32 | a, b, result, expected_result); |
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| 33 | return 1; |
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| 34 | } |
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| 35 | if (rem != expected_rem) { |
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| 36 | printf("error in __aeabi_idivmod: %d mod %d = %d, expected %d\n" , |
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| 37 | a, b, rem, expected_rem); |
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| 38 | return 1; |
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| 39 | } |
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| 40 | |
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| 41 | return 0; |
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| 42 | } |
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| 43 | #endif |
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| 44 | |
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| 45 | |
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| 46 | int main() |
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| 47 | { |
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| 48 | #if __arm__ |
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| 49 | if (test__aeabi_idivmod(0, 1, 0, 0)) |
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| 50 | return 1; |
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| 51 | if (test__aeabi_idivmod(0, -1, 0, 0)) |
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| 52 | return 1; |
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| 53 | |
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| 54 | if (test__aeabi_idivmod(2, 1, 2, 0)) |
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| 55 | return 1; |
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| 56 | if (test__aeabi_idivmod(2, -1, -2, 0)) |
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| 57 | return 1; |
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| 58 | if (test__aeabi_idivmod(-2, 1, -2, 0)) |
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| 59 | return 1; |
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| 60 | if (test__aeabi_idivmod(-2, -1, 2, 0)) |
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| 61 | return 1; |
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| 62 | |
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| 63 | if (test__aeabi_idivmod(7, 5, 1, 2)) |
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| 64 | return 1; |
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| 65 | if (test__aeabi_idivmod(-7, 5, -1, -2)) |
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| 66 | return 1; |
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| 67 | if (test__aeabi_idivmod(19, 5, 3, 4)) |
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| 68 | return 1; |
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| 69 | if (test__aeabi_idivmod(19, -5, -3, 4)) |
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| 70 | return 1; |
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| 71 | |
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| 72 | if (test__aeabi_idivmod(0x80000000, 8, 0xf0000000, 0)) |
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| 73 | return 1; |
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| 74 | if (test__aeabi_idivmod(0x80000007, 8, 0xf0000001, -1)) |
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| 75 | return 1; |
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| 76 | #else |
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| 77 | printf(format: "skipped\n" ); |
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| 78 | #endif |
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| 79 | |
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| 80 | return 0; |
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| 81 | } |
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| 82 | |
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