root/tools/perf/util/libunwind/x86_32.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 /*
   3  * This file setups defines to compile arch specific binary from the
   4  * generic one.
   5  *
   6  * The function 'LIBUNWIND__ARCH_REG_ID' name is set according to arch
   7  * name and the defination of this function is included directly from
   8  * 'arch/x86/util/unwind-libunwind.c', to make sure that this function
   9  * is defined no matter what arch the host is.
  10  *
  11  * Finally, the arch specific unwind methods are exported which will
  12  * be assigned to each x86 thread.
  13  */
  14 
  15 #define REMOTE_UNWIND_LIBUNWIND
  16 
  17 /* Define arch specific functions & regs for libunwind, should be
  18  * defined before including "unwind.h"
  19  */
  20 #define LIBUNWIND__ARCH_REG_ID(regnum) libunwind__x86_reg_id(regnum)
  21 #define LIBUNWIND__ARCH_REG_IP PERF_REG_X86_IP
  22 #define LIBUNWIND__ARCH_REG_SP PERF_REG_X86_SP
  23 
  24 #include "unwind.h"
  25 #include "libunwind-x86.h"
  26 #include <../../../../arch/x86/include/uapi/asm/perf_regs.h>
  27 
  28 /* HAVE_ARCH_X86_64_SUPPORT is used in'arch/x86/util/unwind-libunwind.c'
  29  * for x86_32, we undef it to compile code for x86_32 only.
  30  */
  31 #undef HAVE_ARCH_X86_64_SUPPORT
  32 #include "../../arch/x86/util/unwind-libunwind.c"
  33 
  34 /* Explicitly define NO_LIBUNWIND_DEBUG_FRAME, because non-ARM has no
  35  * dwarf_find_debug_frame() function.
  36  */
  37 #ifndef NO_LIBUNWIND_DEBUG_FRAME
  38 #define NO_LIBUNWIND_DEBUG_FRAME
  39 #endif
  40 #include "util/unwind-libunwind-local.c"
  41 
  42 struct unwind_libunwind_ops *
  43 x86_32_unwind_libunwind_ops = &_unwind_libunwind_ops;