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 definition 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;
44