util/libunwind/x86_32.c

0001 // SPDX-License-Identifier: GPL-2.0
0002 /*
0003  * This file setups defines to compile arch specific binary from the
0004  * generic one.
0005  *
0006  * The function 'LIBUNWIND__ARCH_REG_ID' name is set according to arch
0007  * name and the definition of this function is included directly from
0008  * 'arch/x86/util/unwind-libunwind.c', to make sure that this function
0009  * is defined no matter what arch the host is.
0010  *
0011  * Finally, the arch specific unwind methods are exported which will
0012  * be assigned to each x86 thread.
0013  */
0014
0015 #define REMOTE_UNWIND_LIBUNWIND
0016
0017 /* Define arch specific functions & regs for libunwind, should be
0018  * defined before including "unwind.h"
0019  */
0020 #define LIBUNWIND__ARCH_REG_ID(regnum) libunwind__x86_reg_id(regnum)
0021 #define LIBUNWIND__ARCH_REG_IP PERF_REG_X86_IP
0022 #define LIBUNWIND__ARCH_REG_SP PERF_REG_X86_SP
0023
0024 #include "unwind.h"
0025 #include "libunwind-x86.h"
0026 #include <../../../../arch/x86/include/uapi/asm/perf_regs.h>
0027
0028 /* HAVE_ARCH_X86_64_SUPPORT is used in'arch/x86/util/unwind-libunwind.c'
0029  * for x86_32, we undef it to compile code for x86_32 only.
0030  */
0031 #undef HAVE_ARCH_X86_64_SUPPORT
0032 #include "../../arch/x86/util/unwind-libunwind.c"
0033
0034 /* Explicitly define NO_LIBUNWIND_DEBUG_FRAME, because non-ARM has no
0035  * dwarf_find_debug_frame() function.
0036  */
0037 #ifndef NO_LIBUNWIND_DEBUG_FRAME
0038 #define NO_LIBUNWIND_DEBUG_FRAME
0039 #endif
0040 #include "util/unwind-libunwind-local.c"
0041
0042 struct unwind_libunwind_ops *
0043 x86_32_unwind_libunwind_ops = &_unwind_libunwind_ops;