1 # Copyright 1998-2020 Free Software Foundation, Inc.
3 # This program is free software; you can redistribute it and/or modify
4 # it under the terms of the GNU General Public License as published by
5 # the Free Software Foundation; either version 3 of the License, or
6 # (at your option) any later version.
8 # This program is distributed in the hope that it will be useful,
9 # but WITHOUT ANY WARRANTY; without even the implied warranty of
10 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11 # GNU General Public License for more details.
13 # You should have received a copy of the GNU General Public License
14 # along with this program. If not, see <http://www.gnu.org/licenses/>.
16 # This file was written by Kendra.
19 # Test debugging assembly level programs.
20 # This file uses asmsrc[12].s for input.
27 set link-flags "-e _start"
30 set obj_include -I[standard_output_file {}]
32 switch -glob -- [istarget] {
35 # ??? Won't work with ecoff systems like Tru64, but then we also
36 # don't have any other -g flag that creates mdebug output.
37 set asm-flags "-no-mdebug -I${srcdir}/${subdir} $obj_include"
38 set debug-flags "-gdwarf-2"
60 set debug-flags "-gdwarf-2"
69 set asm-arch m32r-linux
76 append link-flags "--whole-archive -lgloss --no-whole-archive"
80 set asm-flags "-mshort-double -m68hc11 --no-warn -I${srcdir}/${subdir} $obj_include"
81 set debug-flags "-gdwarf-2"
82 # This asm test is specific and uses the linker directly.
83 # We must not use the target board linker script defined for other
84 # tests. Remove it and restore it later on.
85 set board [target_info name]
86 set old_ldscript [board_info $board ldscript]
87 unset_board_info "ldscript"
91 set asm-flags "-mshort-double -m68hc12 --no-warn -I${srcdir}/${subdir} $obj_include"
92 set debug-flags "-gdwarf-2"
93 # This asm test is specific and uses the linker directly.
94 # We must not use the target board linker script defined for other
95 # tests. Remove it and restore it later on.
96 set board [target_info name]
97 set old_ldscript [board_info $board ldscript]
98 set_board_info ldscript ""
104 set asm-arch powerpc64le
105 set asm-flags "-a64 -I${srcdir}/${subdir} $obj_include"
106 append link-flags " -m elf64lppc"
109 if { [is_lp64_target] } {
110 set asm-arch powerpc64
111 set asm-flags "-a64 -I${srcdir}/${subdir} $obj_include"
112 append link-flags " -m elf64ppc"
115 set asm-flags "-a32 -I${srcdir}/${subdir} $obj_include"
116 append link-flags " -m elf32ppc"
121 set debug-flags "-gdwarf-2"
128 set asm-flags "-xarch=v9 -I${srcdir}/${subdir} $obj_include"
129 set debug-flags "-gdwarf-2"
132 set asm-arch xstormy16
133 set debug-flags "-gdwarf-2"
137 set gdb_wrapper_initialized 1
144 set debug-flags "-gdwarf-2"
151 set debug-flags "-gdwarf-2"
155 set debug-flags "-gdwarf-2"
159 set debug-flags "-gdwarf-2"
163 if { "${asm-arch}" == "" } {
164 untested "skipping tests due to no asm architecture"
168 # On NetBSD/ELF we need a special NetBSD-identifying note section.
169 if { [istarget "*-*-netbsdelf*"]
170 || [istarget "alpha-*-netbsd*"]
171 || [istarget "mips*-*-netbsd*"]
172 || [istarget "powerpc-*-netbsd*"]
173 || [istarget "x86_64-*-netbsd*"] } then {
174 set asm-note "netbsd"
177 # On OpenBSD/ELF we need a similar note section. We make no attempt
178 # of handing a.out here since most OpenBSD/a.out systems use a rather
179 # outdated assembler that doesn't assemble this test's code anyway.
180 if { [istarget "*-*-openbsd*"] } then {
181 set asm-note "openbsd"
184 # Watch out, we are invoking the assembler, but the testsuite sets multilib
185 # switches according to compiler syntax. If we pass these options straight
186 # to the assembler, they won't always make sense. If we don't pass them to
187 # the assembler, the final link will complain that the object files were
188 # built with different defaults. So no matter what we do, we lose. We may as
189 # well get out of this test sooner rather than later.
190 set dest [target_info name]
191 if [board_info $dest exists multilib_flags] {
192 set multilib_flags [board_info $dest multilib_flags]
193 if { "${multilib_flags}" != "" } {
194 untested "failed to compile"
200 standard_testfile asmsrc1.s asmsrc2.s
202 set arch_inc [standard_output_file arch.inc]
203 set note_inc [standard_output_file note.inc]
205 remote_exec build "rm -f $arch_inc"
206 remote_download host ${srcdir}/${subdir}/${asm-arch}.inc $arch_inc
207 remote_exec build "rm -f $note_inc"
208 remote_download host ${srcdir}/${subdir}/${asm-note}.inc $note_inc
210 if { [string equal ${asm-flags} ""] } {
211 set asm-flags "-I${srcdir}/${subdir} $obj_include"
214 if { [string equal ${debug-flags} ""] } {
215 set debug-flags "-gstabs"
218 # Allow the target board to override the debug flags.
219 if { [board_info $dest exists debug_flags] } then {
220 set debug-flags "[board_info $dest debug_flags]"
223 # The debug flags are in the format that gcc expects:
224 # "-gdwarf-2", "-gstabs+", or "-gstabs". To be compatible with the
225 # other languages in the test suite, we accept this input format.
226 # So the user can run the test suite with:
228 # runtest --target_board unix/gdb:debug_flags=-gdwarf-2
229 # make check RUNTESTFLAGS="--target_board unix/gdb:debug_flags=-gdwarf-2"
231 # However, the GNU assembler has different spellings than gcc.
232 # So I adjust the debug flags here.
234 # The GNU assembler spells "dwarf-2" as "dwarf2".
235 regsub "--" "-gdwarf-2" "${debug-flags}" "-gdwarf2" debug-flags
237 # The GNU assembler before 2.15 did not support "stabs+".
238 regsub "--" "-gstabs\[+\]" "${debug-flags}" "-gstabs" debug-flags
240 # The GNU assembler does not support level options like "-g2" or "-g3".
241 regsub "--" "-g\[0-9\]" "${debug-flags}" "" debug-flags
243 set asm1obj [standard_output_file asmrc1.o]
244 set asm2obj [standard_output_file asmrc2.o]
246 if {[target_assemble ${srcdir}/${subdir}/${srcfile} $asm1obj "${asm-flags} ${debug-flags}"] != ""} then {
247 untested "failed to assemble"
250 if {[target_assemble ${srcdir}/${subdir}/${srcfile2} $asm2obj "${asm-flags} ${debug-flags}"] != ""} then {
251 untested "failed to assemble"
255 # We deliberately don't use gdb_compile here to link together the
256 # assembled object files. Using gdb_compile, and therefore the C
257 # compiler, is conceptually wrong, since we're testing raw assembler
258 # code here that provides its own startup code. Using target_link
259 # also avoids a lot of problems on many systems, most notably on
260 # *-*-*bsd* and *-*-solaris2*.
261 if {[target_link [list $asm1obj $asm2obj] "${binfile}" ${link-flags}] != "" } then {
262 untested "failed to link"
266 # Restore the target board linker script for HC11/HC12.
267 if { [istarget "m6811-*-*"] || [istarget "m6812-*-*"] } {
268 set_board_info ldscript $old_ldscript
271 # Collect some line numbers.
272 set line_enter [expr [gdb_get_line_number "main enter" "asmsrc1.s"] + 1]
273 set line_main [expr [gdb_get_line_number "main start" "asmsrc1.s"] + 1]
274 set line_call_foo2 [expr [gdb_get_line_number "call foo2" "asmsrc1.s"] + 1]
275 set line_search_comment [expr [gdb_get_line_number "search" "asmsrc1.s"] + 1]
276 set line_foo3 [expr [gdb_get_line_number "foo3 start" "asmsrc1.s"] + 1]
277 set line_main_exit [expr [gdb_get_line_number "main exit" "asmsrc1.s"] + 1]
278 set line_foo2 [expr [gdb_get_line_number "foo2 start" "asmsrc2.s"] + 1]
279 set line_call_foo3 [expr [gdb_get_line_number "call foo3" "asmsrc2.s"] + 1]
280 set line_call_foo3_again [expr $line_call_foo3 + 1]
281 set line_foo2_leave [expr [gdb_get_line_number "foo2 leave" "asmsrc2.s"] + 1]
284 gdb_reinitialize_dir $srcdir/$subdir
288 # Run to `main' where we begin our tests.
291 if ![runto_main] then {
292 fail "can't run to main"
296 # Execute the `f' command and see if the result includes source info.
297 gdb_test "f" "asmsrc1\[.\]s:$line_enter.*gdbasm_enter" "f at main"
299 # Execute the `n' command.
300 gdb_test "n" "$line_main\[ \]*.*several_nops" "n at main"
302 # See if we properly `next' over a macro with several insns.
303 gdb_test "n" "$line_call_foo2\[ \]*.*foo2" "next over macro"
305 # See if we can properly `step' into a subroutine call.
306 gdb_test "s" "$line_foo2\[ \]*.*" "step into foo2"
308 # Test 'info target', and incidentally capture the entry point address.
310 gdb_test_multiple "info target" "info target" {
311 -re "Symbols from .*asm-source.*Entry point: 0x(\[01232456789abcdefABCDEF\]+).*$gdb_prompt $" {
312 set entry_point $expect_out(1,string)
317 # Capture the start symbol (may be '_start' or 'start')
319 gdb_test_multiple "info symbol 0x$entry_point" "info symbol" {
320 -re "info symbol 0x$entry_point\[\r\n\]+(\[^\r\n\]*) in section .*$gdb_prompt $" {
321 # We match the echoed `info symbol' command here, to help us
322 # reliably identify the beginning of the start symbol in the
323 # command's output. You might think we could just use '^' to
324 # start matching at the beginning of the line, but
325 # unfortunately, in Expect, '^' matches the beginning of the
326 # input that hasn't been matched by any expect clause yet. If
327 # every expect clause consumes a complete line, along with its
328 # terminating CR/LF, this is equivalent to the beginning of a
329 # line. But expect clauses that end with `.*' will consume as
330 # much as happened to arrive from the TTY --- exactly where
331 # they leave you depends on inter-process timing. :(
332 set entry_symbol $expect_out(1,string)
337 # Now try a 'list' from the other source file.
338 gdb_test "list $entry_symbol" ".*gdbasm_startup.*" "list"
340 # Now try a source file search
341 gdb_test "search A routine for foo2 to call" \
342 "$line_search_comment\[ \t\]+comment \"A routine for foo2 to call.\"" "search"
344 # See if `f' prints the right source file.
345 gdb_test "f" ".*asmsrc2\[.\]s:$line_foo2.*" "f in foo2"
347 # `next' one insn (or macro) to set up our stackframe (for the following bt).
348 gdb_test "n" "$line_call_foo3\[ \]*.*foo3" "n in foo2"
350 # See if a simple `bt' prints the right source files and
351 # doesn't fall off the stack.
354 "\#0.*foo2.*asmsrc2\[.\]s:$line_call_foo3.*\#1.*main.*asmsrc1\[.\]s:$line_call_foo2" \
357 # See if a capped `bt' prints the right source files.
358 gdb_test "bt 2" "\#0.*foo2.*asmsrc2\[.\]s:$line_call_foo3.*\#1.*main.*asmsrc1\[.\]s:$line_call_foo2.*" "bt 2 in foo2"
360 # Step into another subroutine which lives back in the first source file.
361 gdb_test "s" ".*" "s 2"
363 # Next over insns to set up the stack frame.
364 gdb_test "n" ".*" "n 2"
366 # Now see if a capped `bt' is correct.
367 gdb_test "bt 3" "\#0.*foo3.*asmsrc1\[.\]s:$line_foo3.*\#1.*foo2.*asmsrc2\[.\]s:$line_call_foo3.*\#2.*main.*asmsrc1\[.\]s:$line_call_foo2.*" "bt 3 in foo3"
369 # Try 'info source' from asmsrc1.s
370 gdb_test "info source" \
371 "Current source file is .*asmsrc1.s.*Source language is asm.*" \
372 "info source asmsrc1.s"
374 # Try 'finishing' from foo3
375 # Some architectures will have one or more instructions after the
376 # call instruction which still is part of the call sequence, so we
377 # must be prepared for a "finish" to show us the caller line
378 # again as well as the statement after.
379 gdb_test_multiple "finish" "finish from foo3" {
380 -re "Run till exit from.*\[\r\n\]$line_call_foo3\[ \t\]+gdbasm_call foo3.*$gdb_prompt $" {
381 pass "finish from foo3"
382 gdb_test "s" ".*" "s after finish"
384 -re "Run till exit from.*\[\r\n\]$line_call_foo3_again\[ \t\]+gdbasm_call foo3.*$gdb_prompt $" {
385 pass "finish from foo3"
389 # Try 'info source' from asmsrc2.s
390 gdb_test "info source" \
391 "Current source file is .*asmsrc2.s.*Source language is asm.*" \
392 "info source asmsrc2.s"
394 # Try 'info sources'. This can produce a lot of output on systems
395 # with dynamic linking, where the system's shared libc was compiled
396 # with debugging info; for example, on Linux, this produces 47kb of
397 # output. So we consume it as we go.
400 gdb_test_multiple "info sources" "info sources" {
401 -re "^\[^,\]*asmsrc1.s(, |\[\r\n\]+)" {
405 -re "^\[^,\]*asmsrc2.s(, |\[\r\n\]+)" {
412 -re "$gdb_prompt $" {
413 if {$seen_asmsrc_1 && $seen_asmsrc_2} {
423 gdb_test "info line" \
424 "Line $line_call_foo3_again of.*asmsrc2.s.*starts at.*<\\.?foo2+.*> and ends at.*<\\.?foo2+.*>."
426 # Try 'nexting' over next call to foo3
427 gdb_test "next" "$line_foo2_leave\[ \t\]+gdbasm_leave" "next over foo3"
429 # Try 'return' from foo2
430 # Like "finish", "return" command also can return to the caller
431 # line again or the statement after, depending on the architecture.
432 gdb_test_multiple "return" "return from foo2" {
433 -re "Make (foo2|selected stack frame) return now\\? .y or n. " {
437 -re "\#0.*main .*$line_call_foo2\[ \t\]+gdbasm_call foo2.*$gdb_prompt $" {
438 pass "return from foo2"
439 gdb_test "s" ".*" "s after return"
441 -re "\#0.*main .*$line_main_exit\[ \t\]+gdbasm_exit0.*$gdb_prompt $" {
442 pass "return from foo2"
446 # Disassemble something, check the output
447 proc test_dis { command var } {
449 gdb_test_multiple "${command}" "${command}" {
450 -re "${var}.*:.*(Cannot access|Bad address)" {
451 # The "disassembler" was only accessing the local
452 # executable and that would cause attempts to disassemble
453 # variables to fail (memory not valid).
454 fail "${command} (memory read error)"
456 -re "${var}.*:.*${gdb_prompt}" {
462 # See if we can look at a global variable, three ways
463 gdb_test "print (int) globalvar" ".* = 11" "look at global variable"
464 test_dis "x/i &globalvar" "globalvar"
465 test_dis "disassem &globalvar, (int *) &globalvar+1" "globalvar"
467 # See if we can look at a static variable, three ways
468 gdb_test "print (int) staticvar" ".* = 5" "look at static variable"
469 test_dis "x/i &staticvar" "staticvar"
470 test_dis "disassem &staticvar, (int *) &staticvar+1" "staticvar"
472 # See if we can look at a static function
473 gdb_test "disassem foostatic" ".*<\\+0>:.*End of assembler dump." \
474 "look at static function"
476 remote_exec build "rm -f $arch_inc"
477 remote_exec build "rm -f $note_inc"