gdb/testsuite/gdb.asm/asm-source.exp

   1 # Copyright 1998-2015 Free Software Foundation, Inc.
   2 #
   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.
   7 #
   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.
  12 #
  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/>.
  15 #
  16 # This file was written by Kendra.
  17
  18 #
  19 # Test debugging assembly level programs.
  20 # This file uses asmsrc[12].s for input.
  21 #
  22
  23
  24 set asm-arch ""
  25 set asm-note "empty"
  26 set asm-flags ""
  27 set link-flags "-e _start"
  28 set debug-flags ""
  29
  30 set obj_include -I[standard_output_file {}]
  31
  32 switch -glob -- [istarget] {
  33     "alpha*-*-*" {
  34         set asm-arch alpha
  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"
  39     }
  40     "arm*-*-*" {
  41         set asm-arch arm
  42     }
  43     "bfin-*-*" {
  44         set asm-arch bfin
  45     }
  46     "frv-*-*" {
  47         set asm-arch frv
  48     }
  49     "s390-*-*" {
  50         set asm-arch s390
  51     }
  52     "s390x-*-*" {
  53         set asm-arch s390x
  54     }
  55     "x86_64-*-*" {
  56         set asm-arch x86_64
  57         set debug-flags "-gdwarf-2"
  58     }
  59     "i\[3456\]86-*-*" {
  60         set asm-arch i386
  61     }
  62     "lm32-*" {
  63         set asm-arch lm32
  64     }
  65     "m32r*-linux*" {
  66         set asm-arch m32r-linux
  67     }
  68     "m32c-*-*" {
  69         set asm-arch m32c
  70     }
  71     "m32r*-*" {
  72         set asm-arch m32r
  73         append link-flags "--whole-archive -lgloss --no-whole-archive"
  74     }
  75     "m6811-*-*" {
  76         set asm-arch m68hc11
  77         set asm-flags "-mshort-double -m68hc11 --no-warn -I${srcdir}/${subdir} $obj_include"
  78         set debug-flags "-gdwarf-2"
  79         # This asm test is specific and uses the linker directly.
  80         # We must not use the target board linker script defined for other
  81         # tests.  Remove it and restore it later on.
  82         set board [target_info name]
  83         set old_ldscript [board_info $board ldscript]
  84         unset_board_info "ldscript"
  85     }
  86     "m6812-*-*" {
  87         set asm-arch m68hc11
  88         set asm-flags "-mshort-double -m68hc12 --no-warn -I${srcdir}/${subdir} $obj_include"
  89         set debug-flags "-gdwarf-2"
  90         # This asm test is specific and uses the linker directly.
  91         # We must not use the target board linker script defined for other
  92         # tests.  Remove it and restore it later on.
  93         set board [target_info name]
  94         set old_ldscript [board_info $board ldscript]
  95         set_board_info ldscript ""
  96     }
  97     "mips*-*" {
  98         set asm-arch mips
  99     }
 100     "powerpc64le-*" {
 101         set asm-arch powerpc64le
 102         set asm-flags "-a64 -I${srcdir}/${subdir} $obj_include"
 103         append link-flags " -m elf64lppc"
 104     }
 105     "powerpc*-*" {
 106         if { [is_lp64_target] } {
 107             set asm-arch powerpc64
 108             set asm-flags "-a64 -I${srcdir}/${subdir} $obj_include"
 109             append link-flags " -m elf64ppc"
 110         } else {
 111             set asm-arch powerpc
 112             set asm-flags "-a32 -I${srcdir}/${subdir} $obj_include"
 113             append link-flags " -m elf32ppc"
 114         }
 115     }
 116     "sh*-*-*" {
 117         set asm-arch sh
 118         set debug-flags "-gdwarf-2"
 119     }
 120     "sparc-*-*" {
 121         set asm-arch sparc
 122     }
 123     "sparc64-*-*" {
 124         set asm-arch sparc64
 125         set asm-flags "-xarch=v9 -I${srcdir}/${subdir} $obj_include"
 126         set debug-flags "-gdwarf-2"
 127     }
 128     "spu*-*-*" {
 129        set asm-arch spu
 130        set asm-flags "-I${srcdir}/${subdir} $obj_include --no-warn"
 131        set debug-flags "-gdwarf-2"
 132     }
 133     "xstormy16-*-*" {
 134         set asm-arch xstormy16
 135         set debug-flags "-gdwarf-2"
 136     }
 137     "v850-*-*" {
 138         set asm-arch v850
 139         set gdb_wrapper_initialized 1
 140     }
 141     "m68k-*-*" {
 142         set asm-arch m68k
 143     }
 144     "ia64-*-*" {
 145         set asm-arch ia64
 146         set debug-flags "-gdwarf-2"
 147     }
 148     "iq2000-*-*" {
 149         set asm-arch iq2000
 150     }
 151     "hppa*-linux-*" {
 152         set asm-arch pa
 153         set debug-flags "-gdwarf-2"
 154     }
 155     "hppa-*-openbsd*" {
 156         set asm-arch pa
 157         set debug-flags "-gdwarf-2"
 158     }
 159     "hppa64-*-hpux*" {
 160         set asm-arch pa64
 161         set debug-flags "-gdwarf-2"
 162     }
 163     "h83*-*" {
 164         set asm-arch h8300
 165         set debug-flags "-gdwarf-2"
 166     }
 167 }
 168
 169 if { "${asm-arch}" == "" } {
 170     untested asm-source.exp
 171     return -1
 172 }
 173
 174 # On NetBSD/ELF we need a special NetBSD-identifying note section.
 175 if { [istarget "*-*-netbsdelf*"]
 176      || [istarget "alpha-*-netbsd*"]
 177      || [istarget "mips*-*-netbsd*"]
 178      || [istarget "powerpc-*-netbsd*"]
 179      || [istarget "x86_64-*-netbsd*"] } then {
 180     set asm-note "netbsd"
 181 }
 182
 183 # On OpenBSD/ELF we need a similar note section.  We make no attempt
 184 # of handing a.out here since most OpenBSD/a.out systems use a rather
 185 # outdated assembler that doesn't assemble this test's code anyway.
 186 if { [istarget "*-*-openbsd*"] } then {
 187     set asm-note "openbsd"
 188 }
 189
 190 # Watch out, we are invoking the assembler, but the testsuite sets multilib
 191 # switches according to compiler syntax.  If we pass these options straight
 192 # to the assembler, they won't always make sense.  If we don't pass them to
 193 # the assembler, the final link will complain that the object files were
 194 # built with different defaults.  So no matter what we do, we lose.  We may as
 195 # well get out of this test sooner rather than later.
 196 set dest [target_info name]
 197 if [board_info $dest exists multilib_flags] {
 198         set multilib_flags [board_info $dest multilib_flags]
 199         if { "${multilib_flags}" != "" } {
 200            untested asm-source.exp
 201            return -1
 202            return
 203          }
 204 }
 205
 206 standard_testfile asmsrc1.s asmsrc2.s
 207
 208 set arch_inc [standard_output_file arch.inc]
 209 set note_inc [standard_output_file note.inc]
 210
 211 remote_exec build "rm -f $arch_inc"
 212 remote_download host ${srcdir}/${subdir}/${asm-arch}.inc $arch_inc
 213 remote_exec build "rm -f $note_inc"
 214 remote_download host ${srcdir}/${subdir}/${asm-note}.inc $note_inc
 215
 216 if { [string equal ${asm-flags} ""] } {
 217     set asm-flags "-I${srcdir}/${subdir} $obj_include"
 218 }
 219
 220 if { [string equal ${debug-flags} ""] } {
 221     set debug-flags "-gstabs"
 222 }
 223
 224 # Allow the target board to override the debug flags.
 225 if { [board_info $dest exists debug_flags] } then {
 226     set debug-flags "[board_info $dest debug_flags]"
 227 }
 228
 229 # The debug flags are in the format that gcc expects:
 230 # "-gdwarf-2", "-gstabs+", or "-gstabs".  To be compatible with the
 231 # other languages in the test suite, we accept this input format.
 232 # So the user can run the test suite with:
 233 #
 234 #   runtest --target_board unix/gdb:debug_flags=-gdwarf-2
 235 #   make check RUNTESTFLAGS="--target_board unix/gdb:debug_flags=-gdwarf-2"
 236 #
 237 # However, the GNU assembler has different spellings than gcc.
 238 # So I adjust the debug flags here.
 239
 240 # The GNU assembler spells "dwarf-2" as "dwarf2".
 241 regsub "--" "-gdwarf-2" "${debug-flags}" "-gdwarf2" debug-flags
 242
 243 # The GNU assembler before 2.15 did not support "stabs+".
 244 regsub "--" "-gstabs\[+\]" "${debug-flags}" "-gstabs" debug-flags
 245
 246 # The GNU assembler does not support level options like "-g2" or "-g3".
 247 regsub "--" "-g\[0-9\]" "${debug-flags}" "" debug-flags
 248
 249 set asm1obj [standard_output_file asmrc1.o]
 250 set asm2obj [standard_output_file asmrc2.o]
 251
 252 if {[target_assemble ${srcdir}/${subdir}/${srcfile} $asm1obj "${asm-flags} ${debug-flags}"] != ""} then {
 253      untested asm-source.exp
 254      return -1
 255 }
 256 if {[target_assemble ${srcdir}/${subdir}/${srcfile2} $asm2obj "${asm-flags} ${debug-flags}"] != ""} then {
 257      untested asm-source.exp
 258      return -1
 259 }
 260
 261 # We deliberately don't use gdb_compile here to link together the
 262 # assembled object files.  Using gdb_compile, and therefore the C
 263 # compiler, is conceptually wrong, since we're testing raw assembler
 264 # code here that provides its own startup code.  Using target_link
 265 # also avoids a lot of problems on many systems, most notably on
 266 # *-*-*bsd* and *-*-solaris2*.
 267 if {[target_link [list $asm1obj $asm2obj] "${binfile}" ${link-flags}] != "" } then {
 268      untested asm-source.exp
 269      return -1
 270 }
 271
 272 # Restore the target board linker script for HC11/HC12.
 273 if { [istarget "m6811-*-*"] || [istarget "m6812-*-*"] } {
 274     set_board_info ldscript $old_ldscript
 275 }
 276
 277 # Collect some line numbers.
 278 set line_main       [expr [gdb_get_line_number "main start" "asmsrc1.s"] + 1]
 279 set line_call_foo2  [expr [gdb_get_line_number "call foo2"  "asmsrc1.s"] + 1]
 280 set line_search_comment [expr [gdb_get_line_number "search" "asmsrc1.s"] + 1]
 281 set line_foo3       [expr [gdb_get_line_number "foo3 start" "asmsrc1.s"] + 1]
 282 set line_main_exit  [expr [gdb_get_line_number "main exit"  "asmsrc1.s"] + 1]
 283 set line_foo2       [expr [gdb_get_line_number "foo2 start" "asmsrc2.s"] + 1]
 284 set line_call_foo3  [expr [gdb_get_line_number "call foo3"  "asmsrc2.s"] + 1]
 285 set line_call_foo3_again [expr $line_call_foo3 + 1]
 286 set line_foo2_leave [expr [gdb_get_line_number "foo2 leave" "asmsrc2.s"] + 1]
 287
 288 gdb_start
 289 gdb_reinitialize_dir $srcdir/$subdir
 290 gdb_load ${binfile}
 291
 292 #
 293 # Run to `main' where we begin our tests.
 294 #
 295
 296 if ![runto_main] then {
 297     gdb_suppress_tests
 298 }
 299
 300 # Execute the `f' command and see if the result includes source info.
 301 gdb_test "f" "asmsrc1\[.\]s:$line_main.*several_nops" "f at main"
 302
 303 # See if we properly `next' over a macro with several insns.
 304 gdb_test "n" "$line_call_foo2\[         \]*.*foo2" "next over macro"
 305
 306 # See if we can properly `step' into a subroutine call.
 307 gdb_test "s" "$line_foo2\[      \]*.*" "step into foo2"
 308
 309 # Test 'info target', and incidentally capture the entry point address.
 310 set entry_point 0
 311 gdb_test_multiple "info target" "info target" {
 312     -re "Symbols from .*asm-source.*Entry point: 0x(\[01232456789abcdefABCDEF\]+).*$gdb_prompt $" {
 313         set entry_point $expect_out(1,string)
 314         pass "info target"
 315     }
 316 }
 317
 318 # Capture the start symbol (may be '_start' or 'start')
 319 set entry_symbol ""
 320 gdb_test_multiple "info symbol 0x$entry_point" "info symbol" {
 321     -re "info symbol 0x$entry_point\[\r\n\]+(\[^\r\n\]*) in section .*$gdb_prompt $" {
 322         # We match the echoed `info symbol' command here, to help us
 323         # reliably identify the beginning of the start symbol in the
 324         # command's output.  You might think we could just use '^' to
 325         # start matching at the beginning of the line, but
 326         # unfortunately, in Expect, '^' matches the beginning of the
 327         # input that hasn't been matched by any expect clause yet.  If
 328         # every expect clause consumes a complete line, along with its
 329         # terminating CR/LF, this is equivalent to the beginning of a
 330         # line.  But expect clauses that end with `.*' will consume as
 331         # much as happened to arrive from the TTY --- exactly where
 332         # they leave you depends on inter-process timing.  :(
 333         set entry_symbol $expect_out(1,string)
 334         pass "info symbol"
 335     }
 336 }
 337
 338 # Now try a 'list' from the other source file.
 339 gdb_test "list $entry_symbol" ".*gdbasm_startup.*" "list"
 340
 341 # Now try a source file search
 342 gdb_test "search A routine for foo2 to call" \
 343         "$line_search_comment\[ \t\]+comment \"A routine for foo2 to call.\"" "search"
 344
 345 # See if `f' prints the right source file.
 346 gdb_test "f" ".*asmsrc2\[.\]s:$line_foo2.*" "f in foo2"
 347
 348 # `next' one insn (or macro) to set up our stackframe (for the following bt).
 349 gdb_test "n" "$line_call_foo3\[         \]*.*foo3" "n in foo2"
 350
 351 # See if a simple `bt' prints the right source files and
 352 # doesn't fall off the stack.
 353
 354 gdb_test "bt 10" \
 355         "\#0.*foo2.*asmsrc2\[.\]s:$line_call_foo3.*\#1.*main.*asmsrc1\[.\]s:$line_call_foo2" \
 356         "bt ALL in foo2"
 357
 358 # See if a capped `bt' prints the right source files.
 359 gdb_test "bt 2" "\#0.*foo2.*asmsrc2\[.\]s:$line_call_foo3.*\#1.*main.*asmsrc1\[.\]s:$line_call_foo2.*" "bt 2 in foo2"
 360
 361 # Step into another subroutine which lives back in the first source file.
 362 gdb_test "s" ".*" "s 2"
 363
 364 # Next over insns to set up the stack frame.
 365 gdb_test "n" ".*" "n 2"
 366
 367 # Now see if a capped `bt' is correct.
 368 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
 370 # Try 'info source' from asmsrc1.s
 371 gdb_test "info source" \
 372         "Current source file is .*asmsrc1.s.*Source language is asm.*" \
 373         "info source asmsrc1.s"
 374
 375 # Try 'finishing' from foo3
 376 # Some architectures will have one or more instructions after the
 377 # call instruction which still is part of the call sequence, so we
 378 # must be prepared for a "finish" to show us the caller line
 379 # again as well as the statement after.
 380 gdb_test_multiple "finish" "finish from foo3" {
 381     -re "Run till exit from.*\[\r\n\]$line_call_foo3\[ \t\]+gdbasm_call foo3.*$gdb_prompt $" {
 382         pass "finish from foo3"
 383         gdb_test "s" ".*" "s after finish"
 384     }
 385     -re "Run till exit from.*\[\r\n\]$line_call_foo3_again\[ \t\]+gdbasm_call foo3.*$gdb_prompt $" {
 386         pass "finish from foo3"
 387     }
 388 }
 389
 390 # Try 'info source' from asmsrc2.s
 391 gdb_test "info source" \
 392         "Current source file is .*asmsrc2.s.*Source language is asm.*" \
 393         "info source asmsrc2.s"
 394
 395 # Try 'info sources'.  This can produce a lot of output on systems
 396 # with dynamic linking, where the system's shared libc was compiled
 397 # with debugging info; for example, on Linux, this produces 47kb of
 398 # output.  So we consume it as we go.
 399 set seen_asmsrc_1 0
 400 set seen_asmsrc_2 0
 401 gdb_test_multiple "info sources" "info sources" {
 402     -re "^\[^,\]*asmsrc1.s(, |\[\r\n\]+)" {
 403         set seen_asmsrc_1 1
 404         exp_continue
 405     }
 406     -re "^\[^,\]*asmsrc2.s(, |\[\r\n\]+)" {
 407         set seen_asmsrc_2 1
 408         exp_continue
 409     }
 410     -re ", " {
 411         exp_continue
 412     }
 413     -re "$gdb_prompt $" {
 414         if {$seen_asmsrc_1 && $seen_asmsrc_2} {
 415             pass "info sources"
 416         } else {
 417             fail "info sources"
 418         }
 419     }
 420 }
 421
 422
 423 # Try 'info line'
 424 gdb_test "info line" \
 425         "Line $line_call_foo3_again of.*asmsrc2.s.*starts at.*<\\.?foo2+.*> and ends at.*<\\.?foo2+.*>." \
 426         "info line"
 427
 428 # Try 'nexting' over next call to foo3
 429 gdb_test "next" "$line_foo2_leave\[ \t\]+gdbasm_leave" "next over foo3"
 430
 431 # Try 'return' from foo2
 432 # Like "finish", "return" command also can return to the caller
 433 # line again or the statement after, depending on the architecture.
 434 gdb_test_multiple "return" "return from foo2" {
 435     -re "Make (foo2|selected stack frame) return now\?.*" {
 436         send_gdb "y\n"
 437         exp_continue
 438     }
 439     -re "\#0.*main .*$line_call_foo2\[ \t\]+gdbasm_call foo2.*$gdb_prompt $" {
 440         pass "return from foo2"
 441         gdb_test "s" ".*" "s after return"
 442     }
 443     -re "\#0.*main .*$line_main_exit\[ \t\]+gdbasm_exit0.*$gdb_prompt $" {
 444         pass "return from foo2"
 445     }
 446 }
 447
 448 # Disassemble something, check the output
 449 proc test_dis { command var } {
 450     global gdb_prompt
 451     gdb_test_multiple "${command}" "${command}" {
 452         -re "${var}.*:.*(Cannot access|Bad address)" {
 453             # The "disassembler" was only accessing the local
 454             # executable and that would cause attempts to disassemble
 455             # variables to fail (memory not valid).
 456             fail "${command} (memory read error)"
 457         }
 458         -re "${var}.*:.*${gdb_prompt}" {
 459             pass "${command}"
 460         }
 461     }
 462 }
 463
 464 # See if we can look at a global variable, three ways
 465 gdb_test "print globalvar" ".* = 11" "look at global variable"
 466 test_dis "x/i &globalvar" "globalvar"
 467 test_dis "disassem &globalvar, &globalvar+1" "globalvar"
 468
 469 # See if we can look at a static variable, three ways
 470 gdb_test "print staticvar" ".* = 5" "look at static variable"
 471 test_dis "x/i &staticvar" "staticvar"
 472 test_dis "disassem &staticvar, &staticvar+1" "staticvar"
 473
 474 # See if we can look at a static function
 475 gdb_test "disassem foostatic" ".*<\\+0>:.*End of assembler dump." \
 476         "look at static function"
 477
 478 remote_exec build "rm -f $arch_inc"
 479 remote_exec build "rm -f $note_inc"