37 lines
1.4 KiB
C++
37 lines
1.4 KiB
C++
//===-- sanitizer_asm.h -----------------------------------------*- C++ -*-===//
|
|
//
|
|
// This file is distributed under the University of Illinois Open Source
|
|
// License. See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
//
|
|
// Various support for assemebler.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
// Some toolchains do not support .cfi asm directives, so we have to hide
|
|
// them inside macros.
|
|
#if defined(__clang__) || \
|
|
(defined(__GNUC__) && defined(__GCC_HAVE_DWARF2_CFI_ASM))
|
|
// GCC defined __GCC_HAVE_DWARF2_CFI_ASM if it supports CFI.
|
|
// Clang seems to support CFI by default (or not?).
|
|
// We need two versions of macros: for inline asm and standalone asm files.
|
|
# define CFI_INL_ADJUST_CFA_OFFSET(n) ".cfi_adjust_cfa_offset " #n ";"
|
|
|
|
# define CFI_STARTPROC .cfi_startproc
|
|
# define CFI_ENDPROC .cfi_endproc
|
|
# define CFI_ADJUST_CFA_OFFSET(n) .cfi_adjust_cfa_offset n
|
|
# define CFI_REL_OFFSET(reg, n) .cfi_rel_offset reg, n
|
|
# define CFI_DEF_CFA_REGISTER(reg) .cfi_def_cfa_register reg
|
|
# define CFI_RESTORE(reg) .cfi_restore reg
|
|
|
|
#else // No CFI
|
|
# define CFI_INL_ADJUST_CFA_OFFSET(n)
|
|
# define CFI_STARTPROC
|
|
# define CFI_ENDPROC
|
|
# define CFI_ADJUST_CFA_OFFSET(n)
|
|
# define CFI_REL_OFFSET(reg, n)
|
|
# define CFI_DEF_CFA_REGISTER(reg)
|
|
# define CFI_RESTORE(reg)
|
|
#endif
|