src/hotspot/os_cpu/linux_x86/os_linux_x86.cpp

8205199: more Linux clang compile failures
Contributed-by: <Arthur Eubanks> aeubanks@google.com, Thomas Stuefe <thomas.stuefe@gmail.com>
Reviewed-by: dholmes, kbarrett, stuefe

*** 94,108 ****
  #endif // AMD64
  
  address os::current_stack_pointer() {
  #ifdef SPARC_WORKS
    register void *esp;
!   __asm__("mov %%"SPELL_REG_SP", %0":"=r"(esp));
    return (address) ((char*)esp + sizeof(long)*2);
  #elif defined(__clang__)
    intptr_t* esp;
!   __asm__ __volatile__ ("mov %%"SPELL_REG_SP", %0":"=r"(esp):);
    return (address) esp;
  #else
    register void *esp __asm__ (SPELL_REG_SP);
    return (address) esp;
  #endif
--- 94,108 ----
  #endif // AMD64
  
  address os::current_stack_pointer() {
  #ifdef SPARC_WORKS
    register void *esp;
!   __asm__("mov %%" SPELL_REG_SP ", %0":"=r"(esp));
    return (address) ((char*)esp + sizeof(long)*2);
  #elif defined(__clang__)
    intptr_t* esp;
!   __asm__ __volatile__ ("mov %%" SPELL_REG_SP ", %0":"=r"(esp):);
    return (address) esp;
  #else
    register void *esp __asm__ (SPELL_REG_SP);
    return (address) esp;
  #endif
*** 232,245 ****
  }
  
  intptr_t* _get_previous_fp() {
  #ifdef SPARC_WORKS
    register intptr_t **ebp;
!   __asm__("mov %%"SPELL_REG_FP", %0":"=r"(ebp));
  #elif defined(__clang__)
    intptr_t **ebp;
!   __asm__ __volatile__ ("mov %%"SPELL_REG_FP", %0":"=r"(ebp):);
  #else
    register intptr_t **ebp __asm__ (SPELL_REG_FP);
  #endif
    // ebp is for this frame (_get_previous_fp). We want the ebp for the
    // caller of os::current_frame*(), so go up two frames. However, for
--- 232,245 ----
  }
  
  intptr_t* _get_previous_fp() {
  #ifdef SPARC_WORKS
    register intptr_t **ebp;
!   __asm__("mov %%" SPELL_REG_FP ", %0":"=r"(ebp));
  #elif defined(__clang__)
    intptr_t **ebp;
!   __asm__ __volatile__ ("mov %%" SPELL_REG_FP ", %0":"=r"(ebp):);
  #else
    register intptr_t **ebp __asm__ (SPELL_REG_FP);
  #endif
    // ebp is for this frame (_get_previous_fp). We want the ebp for the
    // caller of os::current_frame*(), so go up two frames. However, for