src/libcompiler_builtins/compiler-rt/lib/builtins/arm/aeabi_ldivmod.S

   1 //===-- aeabi_ldivmod.S - EABI ldivmod 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 { int64_t quot, int64_t rem}
  13 //        __aeabi_ldivmod(int64_t numerator, int64_t denominator) {
  14 //   int64_t rem, quot;
  15 //   quot = __divmoddi4(numerator, denominator, &rem);
  16 //   return {quot, rem};
  17 // }
  18
  19 #if defined(__MINGW32__)
  20 #define __aeabi_ldivmod __rt_sdiv64
  21 #endif
  22
  23         .syntax unified
  24         .p2align 2
  25 DEFINE_COMPILERRT_FUNCTION(__aeabi_ldivmod)
  26         push    {r6, lr}
  27         sub     sp, sp, #16
  28         add     r6, sp, #8
  29         str     r6, [sp]
  30 #if defined(__MINGW32__)
  31         movs    r6, r0
  32         movs    r0, r2
  33         movs    r2, r6
  34         movs    r6, r1
  35         movs    r1, r3
  36         movs    r3, r6
  37 #endif
  38         bl      SYMBOL_NAME(__divmoddi4)
  39         ldr     r2, [sp, #8]
  40         ldr     r3, [sp, #12]
  41         add     sp, sp, #16
  42         pop     {r6, pc}
  43 END_COMPILERRT_FUNCTION(__aeabi_ldivmod)
  44
  45 NO_EXEC_STACK_DIRECTIVE
  46