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//===-- aeabi_idivmod.S - EABI idivmod implementation ---------------------===//
//
//                     The LLVM Compiler Infrastructure
//
// This file is dual licensed under the MIT and the University of Illinois Open
// Source Licenses. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//

#include "../assembly.h"

// struct { int quot, int rem} __aeabi_idivmod(int numerator, int denominator) {
//   int rem, quot;
//   quot = __divmodsi4(numerator, denominator, &rem);
//   return {quot, rem};
// }

#if defined(__MINGW32__)
#define __aeabi_idivmod __rt_sdiv
#endif

        .syntax unified
        .p2align 2
DEFINE_COMPILERRT_FUNCTION(__aeabi_idivmod)
#if __ARM_ARCH_ISA_THUMB == 1
        push    {r0, r1, lr}
        bl      SYMBOL_NAME(__divsi3)
        pop     {r1, r2, r3} // now r0 = quot, r1 = num, r2 = denom
        muls    r2, r2, r0   // r2 = quot * denom
        subs    r1, r1, r2
        JMP     (r3)
#else
        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(__divmodsi4)
        ldr     r1, [sp]
        add     sp, sp, #4
        pop     { pc }
#endif // __ARM_ARCH_ISA_THUMB == 1
END_COMPILERRT_FUNCTION(__aeabi_idivmod)

NO_EXEC_STACK_DIRECTIVE