1 /* Self tests for disassembler for GDB, the GNU debugger.
3 Copyright (C) 2017 Free Software Foundation, Inc.
5 This file is part of GDB.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program. If not, see <http://www.gnu.org/licenses/>. */
25 #include "selftest-arch.h"
29 /* Test disassembly of one instruction. */
32 print_one_insn_test (struct gdbarch *gdbarch)
35 const gdb_byte *insn = NULL;
37 switch (gdbarch_bfd_arch_info (gdbarch)->arch)
41 static const gdb_byte bfin_insn[] = {0x17, 0xe1, 0xff, 0xff};
44 len = sizeof (bfin_insn);
48 static const gdb_byte arm_insn[] = {0x0, 0x0, 0xa0, 0xe3};
51 len = sizeof (arm_insn);
61 static const gdb_byte s390_insn[] = {0x07, 0x07};
64 len = sizeof (s390_insn);
66 case bfd_arch_xstormy16:
68 static const gdb_byte xstormy16_insn[] = {0x0, 0x0};
70 insn = xstormy16_insn;
71 len = sizeof (xstormy16_insn);
75 if (gdbarch_bfd_arch_info (gdbarch)->mach == bfd_mach_arc_arc601)
80 /* nios2 and score need to know the current instruction to select
81 breakpoint instruction. Give the breakpoint instruction kind
84 insn = gdbarch_sw_breakpoint_from_kind (gdbarch, 4, &bplen);
89 /* Test disassemble breakpoint instruction. */
91 int kind = gdbarch_breakpoint_kind_from_pc (gdbarch, &pc);
94 insn = gdbarch_sw_breakpoint_from_kind (gdbarch, kind, &bplen);
100 SELF_CHECK (len > 0);
102 /* Test gdb_disassembler for a given gdbarch by reading data from a
103 pre-allocated buffer. If you want to see the disassembled
104 instruction printed to gdb_stdout, set verbose to true. */
106 class gdb_disassembler_test : public gdb_disassembler
110 const bool verbose = false;
112 explicit gdb_disassembler_test (struct gdbarch *gdbarch,
113 const gdb_byte *insn,
115 : gdb_disassembler (gdbarch,
116 (verbose ? gdb_stdout : null_stream ()),
117 gdb_disassembler_test::read_memory),
118 m_insn (insn), m_len (len)
123 print_insn (CORE_ADDR memaddr)
127 fprintf_unfiltered (stream (), "%s ",
128 gdbarch_bfd_arch_info (arch ())->arch_name);
131 int len = gdb_disassembler::print_insn (memaddr);
134 fprintf_unfiltered (stream (), "\n");
140 /* A buffer contain one instruction. */
141 const gdb_byte *m_insn;
143 /* Length of the buffer. */
146 static int read_memory (bfd_vma memaddr, gdb_byte *myaddr,
147 unsigned int len, struct disassemble_info *info)
149 gdb_disassembler_test *self
150 = static_cast<gdb_disassembler_test *>(info->application_data);
152 /* The disassembler in opcodes may read more data than one
153 instruction. Supply infinite consecutive copies
154 of the same instruction. */
155 for (size_t i = 0; i < len; i++)
156 myaddr[i] = self->m_insn[(memaddr + i) % self->m_len];
162 gdb_disassembler_test di (gdbarch, insn, len);
164 SELF_CHECK (di.print_insn (0) == len);
167 /* Test disassembly on memory error. */
170 memory_error_test (struct gdbarch *gdbarch)
172 class gdb_disassembler_test : public gdb_disassembler
175 gdb_disassembler_test (struct gdbarch *gdbarch)
176 : gdb_disassembler (gdbarch, null_stream (),
177 gdb_disassembler_test::read_memory)
181 static int read_memory (bfd_vma memaddr, gdb_byte *myaddr,
183 struct disassemble_info *info)
185 /* Always return an error. */
190 gdb_disassembler_test di (gdbarch);
191 bool saw_memory_error = false;
197 CATCH (ex, RETURN_MASK_ERROR)
199 if (ex.error == MEMORY_ERROR)
200 saw_memory_error = true;
204 /* Expect MEMORY_ERROR. */
205 SELF_CHECK (saw_memory_error);
208 } // namespace selftests
209 #endif /* GDB_SELF_TEST */
211 /* Suppress warning from -Wmissing-prototypes. */
212 extern initialize_file_ftype _initialize_disasm_selftests;
215 _initialize_disasm_selftests (void)
218 register_self_test_foreach_arch (selftests::print_one_insn_test);
219 register_self_test_foreach_arch (selftests::memory_error_test);