src/libcompiler_builtins/compiler-rt/test/builtins/Unit/arm/call_apsr.S

   1 //===-- call_apsr.S - Helpers for ARM EABI floating point tests -----------===//
   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 // This file implements helpers for ARM EABI floating point tests for the
  11 // compiler_rt library.
  12 //
  13 //===----------------------------------------------------------------------===//
  14
  15 #include "../../../../lib/builtins/assembly.h"
  16
  17 .syntax unified
  18 // __attribute__((pcs("aapcs")))
  19 // int32_t call_apsr_d(double a, double b, void(*fn)(double, double)) {
  20 //   fn(a, b);
  21 //   return apsr;
  22 // }
  23
  24 DEFINE_COMPILERRT_PRIVATE_FUNCTION(call_apsr_d)
  25     push {r7, lr}
  26     ldr r7, [sp, #8]
  27     blx r7
  28     mrs r0, apsr
  29     pop {r7, pc}
  30 END_COMPILERRT_FUNCTION(call_apsr_d)
  31
  32 // __attribute__((pcs("aapcs")))
  33 // int32_t call_apsr_f(float a, float b, void(*fn)(float, float)) {
  34 //   fn(a, b);
  35 //   return apsr;
  36 // }
  37
  38 DEFINE_COMPILERRT_PRIVATE_FUNCTION(call_apsr_f)
  39     push {lr}
  40     blx r2
  41     mrs r0, apsr
  42     pop {pc}
  43 END_COMPILERRT_FUNCTION(call_apsr_f)