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483 lines
16 KiB
Plaintext
483 lines
16 KiB
Plaintext
# Copyright 1998-2018 Free Software Foundation, Inc.
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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#
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# This file was written by Kendra.
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#
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# Test debugging assembly level programs.
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# This file uses asmsrc[12].s for input.
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#
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set asm-arch ""
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set asm-note "empty"
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set asm-flags ""
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set link-flags "-e _start"
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set debug-flags ""
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set obj_include -I[standard_output_file {}]
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switch -glob -- [istarget] {
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"alpha*-*-*" {
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set asm-arch alpha
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# ??? Won't work with ecoff systems like Tru64, but then we also
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# don't have any other -g flag that creates mdebug output.
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set asm-flags "-no-mdebug -I${srcdir}/${subdir} $obj_include"
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set debug-flags "-gdwarf-2"
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}
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"arm*-*-*" {
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set asm-arch arm
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}
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"aarch64*-*-*" {
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set asm-arch aarch64
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}
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"bfin-*-*" {
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set asm-arch bfin
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}
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"frv-*-*" {
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set asm-arch frv
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}
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"s390-*-*" {
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set asm-arch s390
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}
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"s390x-*-*" {
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set asm-arch s390x
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}
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"x86_64-*-*" {
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set asm-arch x86_64
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set debug-flags "-gdwarf-2"
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}
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"i\[3456\]86-*-*" {
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set asm-arch i386
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}
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"lm32-*" {
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set asm-arch lm32
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}
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"m32r*-linux*" {
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set asm-arch m32r-linux
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}
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"m32c-*-*" {
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set asm-arch m32c
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}
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"m32r*-*" {
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set asm-arch m32r
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append link-flags "--whole-archive -lgloss --no-whole-archive"
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}
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"m6811-*-*" {
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set asm-arch m68hc11
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set asm-flags "-mshort-double -m68hc11 --no-warn -I${srcdir}/${subdir} $obj_include"
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set debug-flags "-gdwarf-2"
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# This asm test is specific and uses the linker directly.
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# We must not use the target board linker script defined for other
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# tests. Remove it and restore it later on.
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set board [target_info name]
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set old_ldscript [board_info $board ldscript]
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unset_board_info "ldscript"
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}
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"m6812-*-*" {
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set asm-arch m68hc11
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set asm-flags "-mshort-double -m68hc12 --no-warn -I${srcdir}/${subdir} $obj_include"
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set debug-flags "-gdwarf-2"
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# This asm test is specific and uses the linker directly.
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# We must not use the target board linker script defined for other
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# tests. Remove it and restore it later on.
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set board [target_info name]
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set old_ldscript [board_info $board ldscript]
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set_board_info ldscript ""
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}
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"mips*-*" {
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set asm-arch mips
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}
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"powerpc64le-*" {
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set asm-arch powerpc64le
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set asm-flags "-a64 -I${srcdir}/${subdir} $obj_include"
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append link-flags " -m elf64lppc"
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}
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"powerpc*-*" {
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if { [is_lp64_target] } {
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set asm-arch powerpc64
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set asm-flags "-a64 -I${srcdir}/${subdir} $obj_include"
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append link-flags " -m elf64ppc"
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} else {
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set asm-arch powerpc
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set asm-flags "-a32 -I${srcdir}/${subdir} $obj_include"
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append link-flags " -m elf32ppc"
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}
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}
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"sh*-*-*" {
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set asm-arch sh
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set debug-flags "-gdwarf-2"
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}
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"sparc-*-*" {
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set asm-arch sparc
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}
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"sparc64-*-*" {
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set asm-arch sparc64
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set asm-flags "-xarch=v9 -I${srcdir}/${subdir} $obj_include"
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set debug-flags "-gdwarf-2"
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}
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"spu*-*-*" {
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set asm-arch spu
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set asm-flags "-I${srcdir}/${subdir} $obj_include --no-warn"
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set debug-flags "-gdwarf-2"
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}
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"xstormy16-*-*" {
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set asm-arch xstormy16
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set debug-flags "-gdwarf-2"
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}
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"v850-*-*" {
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set asm-arch v850
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set gdb_wrapper_initialized 1
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}
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"m68k-*-*" {
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set asm-arch m68k
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}
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"ia64-*-*" {
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set asm-arch ia64
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set debug-flags "-gdwarf-2"
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}
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"iq2000-*-*" {
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set asm-arch iq2000
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}
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"hppa*-linux-*" {
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set asm-arch pa
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set debug-flags "-gdwarf-2"
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}
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"hppa-*-openbsd*" {
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set asm-arch pa
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set debug-flags "-gdwarf-2"
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}
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"h83*-*" {
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set asm-arch h8300
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set debug-flags "-gdwarf-2"
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}
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}
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if { "${asm-arch}" == "" } {
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untested "skipping tests due to no asm architecture"
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return -1
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}
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# On NetBSD/ELF we need a special NetBSD-identifying note section.
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if { [istarget "*-*-netbsdelf*"]
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|| [istarget "alpha-*-netbsd*"]
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|| [istarget "mips*-*-netbsd*"]
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|| [istarget "powerpc-*-netbsd*"]
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|| [istarget "x86_64-*-netbsd*"] } then {
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set asm-note "netbsd"
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}
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# On OpenBSD/ELF we need a similar note section. We make no attempt
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# of handing a.out here since most OpenBSD/a.out systems use a rather
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# outdated assembler that doesn't assemble this test's code anyway.
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if { [istarget "*-*-openbsd*"] } then {
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set asm-note "openbsd"
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}
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# Watch out, we are invoking the assembler, but the testsuite sets multilib
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# switches according to compiler syntax. If we pass these options straight
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# to the assembler, they won't always make sense. If we don't pass them to
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# the assembler, the final link will complain that the object files were
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# built with different defaults. So no matter what we do, we lose. We may as
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# well get out of this test sooner rather than later.
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set dest [target_info name]
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if [board_info $dest exists multilib_flags] {
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set multilib_flags [board_info $dest multilib_flags]
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if { "${multilib_flags}" != "" } {
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untested "failed to compile"
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return -1
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return
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}
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}
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standard_testfile asmsrc1.s asmsrc2.s
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set arch_inc [standard_output_file arch.inc]
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set note_inc [standard_output_file note.inc]
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remote_exec build "rm -f $arch_inc"
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remote_download host ${srcdir}/${subdir}/${asm-arch}.inc $arch_inc
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remote_exec build "rm -f $note_inc"
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remote_download host ${srcdir}/${subdir}/${asm-note}.inc $note_inc
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if { [string equal ${asm-flags} ""] } {
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set asm-flags "-I${srcdir}/${subdir} $obj_include"
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}
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if { [string equal ${debug-flags} ""] } {
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set debug-flags "-gstabs"
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}
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# Allow the target board to override the debug flags.
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if { [board_info $dest exists debug_flags] } then {
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set debug-flags "[board_info $dest debug_flags]"
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}
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# The debug flags are in the format that gcc expects:
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# "-gdwarf-2", "-gstabs+", or "-gstabs". To be compatible with the
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# other languages in the test suite, we accept this input format.
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# So the user can run the test suite with:
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#
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# runtest --target_board unix/gdb:debug_flags=-gdwarf-2
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# make check RUNTESTFLAGS="--target_board unix/gdb:debug_flags=-gdwarf-2"
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#
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# However, the GNU assembler has different spellings than gcc.
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# So I adjust the debug flags here.
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# The GNU assembler spells "dwarf-2" as "dwarf2".
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regsub "--" "-gdwarf-2" "${debug-flags}" "-gdwarf2" debug-flags
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# The GNU assembler before 2.15 did not support "stabs+".
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regsub "--" "-gstabs\[+\]" "${debug-flags}" "-gstabs" debug-flags
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# The GNU assembler does not support level options like "-g2" or "-g3".
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regsub "--" "-g\[0-9\]" "${debug-flags}" "" debug-flags
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set asm1obj [standard_output_file asmrc1.o]
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set asm2obj [standard_output_file asmrc2.o]
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if {[target_assemble ${srcdir}/${subdir}/${srcfile} $asm1obj "${asm-flags} ${debug-flags}"] != ""} then {
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untested "failed to assemble"
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return -1
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}
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if {[target_assemble ${srcdir}/${subdir}/${srcfile2} $asm2obj "${asm-flags} ${debug-flags}"] != ""} then {
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untested "failed to assemble"
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return -1
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}
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# We deliberately don't use gdb_compile here to link together the
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# assembled object files. Using gdb_compile, and therefore the C
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# compiler, is conceptually wrong, since we're testing raw assembler
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# code here that provides its own startup code. Using target_link
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# also avoids a lot of problems on many systems, most notably on
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# *-*-*bsd* and *-*-solaris2*.
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if {[target_link [list $asm1obj $asm2obj] "${binfile}" ${link-flags}] != "" } then {
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untested "failed to link"
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return -1
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}
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# Restore the target board linker script for HC11/HC12.
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if { [istarget "m6811-*-*"] || [istarget "m6812-*-*"] } {
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set_board_info ldscript $old_ldscript
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}
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# Collect some line numbers.
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set line_enter [expr [gdb_get_line_number "main enter" "asmsrc1.s"] + 1]
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set line_main [expr [gdb_get_line_number "main start" "asmsrc1.s"] + 1]
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set line_call_foo2 [expr [gdb_get_line_number "call foo2" "asmsrc1.s"] + 1]
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set line_search_comment [expr [gdb_get_line_number "search" "asmsrc1.s"] + 1]
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set line_foo3 [expr [gdb_get_line_number "foo3 start" "asmsrc1.s"] + 1]
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set line_main_exit [expr [gdb_get_line_number "main exit" "asmsrc1.s"] + 1]
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set line_foo2 [expr [gdb_get_line_number "foo2 start" "asmsrc2.s"] + 1]
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set line_call_foo3 [expr [gdb_get_line_number "call foo3" "asmsrc2.s"] + 1]
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set line_call_foo3_again [expr $line_call_foo3 + 1]
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set line_foo2_leave [expr [gdb_get_line_number "foo2 leave" "asmsrc2.s"] + 1]
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gdb_start
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gdb_reinitialize_dir $srcdir/$subdir
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gdb_load ${binfile}
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#
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# Run to `main' where we begin our tests.
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#
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if ![runto_main] then {
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gdb_suppress_tests
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}
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# Execute the `f' command and see if the result includes source info.
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gdb_test "f" "asmsrc1\[.\]s:$line_enter.*gdbasm_enter" "f at main"
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# Execute the `n' command.
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gdb_test "n" "$line_main\[ \]*.*several_nops" "n at main"
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# See if we properly `next' over a macro with several insns.
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gdb_test "n" "$line_call_foo2\[ \]*.*foo2" "next over macro"
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# See if we can properly `step' into a subroutine call.
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gdb_test "s" "$line_foo2\[ \]*.*" "step into foo2"
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# Test 'info target', and incidentally capture the entry point address.
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set entry_point 0
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gdb_test_multiple "info target" "info target" {
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-re "Symbols from .*asm-source.*Entry point: 0x(\[01232456789abcdefABCDEF\]+).*$gdb_prompt $" {
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set entry_point $expect_out(1,string)
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pass "info target"
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}
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}
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# Capture the start symbol (may be '_start' or 'start')
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set entry_symbol ""
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gdb_test_multiple "info symbol 0x$entry_point" "info symbol" {
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-re "info symbol 0x$entry_point\[\r\n\]+(\[^\r\n\]*) in section .*$gdb_prompt $" {
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# We match the echoed `info symbol' command here, to help us
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# reliably identify the beginning of the start symbol in the
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# command's output. You might think we could just use '^' to
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# start matching at the beginning of the line, but
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# unfortunately, in Expect, '^' matches the beginning of the
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# input that hasn't been matched by any expect clause yet. If
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# every expect clause consumes a complete line, along with its
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# terminating CR/LF, this is equivalent to the beginning of a
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# line. But expect clauses that end with `.*' will consume as
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# much as happened to arrive from the TTY --- exactly where
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# they leave you depends on inter-process timing. :(
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set entry_symbol $expect_out(1,string)
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pass "info symbol"
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}
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}
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# Now try a 'list' from the other source file.
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gdb_test "list $entry_symbol" ".*gdbasm_startup.*" "list"
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# Now try a source file search
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gdb_test "search A routine for foo2 to call" \
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"$line_search_comment\[ \t\]+comment \"A routine for foo2 to call.\"" "search"
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# See if `f' prints the right source file.
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gdb_test "f" ".*asmsrc2\[.\]s:$line_foo2.*" "f in foo2"
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# `next' one insn (or macro) to set up our stackframe (for the following bt).
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gdb_test "n" "$line_call_foo3\[ \]*.*foo3" "n in foo2"
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# See if a simple `bt' prints the right source files and
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# doesn't fall off the stack.
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gdb_test "bt 10" \
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"\#0.*foo2.*asmsrc2\[.\]s:$line_call_foo3.*\#1.*main.*asmsrc1\[.\]s:$line_call_foo2" \
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"bt ALL in foo2"
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# See if a capped `bt' prints the right source files.
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gdb_test "bt 2" "\#0.*foo2.*asmsrc2\[.\]s:$line_call_foo3.*\#1.*main.*asmsrc1\[.\]s:$line_call_foo2.*" "bt 2 in foo2"
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# Step into another subroutine which lives back in the first source file.
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gdb_test "s" ".*" "s 2"
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# Next over insns to set up the stack frame.
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gdb_test "n" ".*" "n 2"
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# Now see if a capped `bt' is correct.
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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"
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# Try 'info source' from asmsrc1.s
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gdb_test "info source" \
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"Current source file is .*asmsrc1.s.*Source language is asm.*" \
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"info source asmsrc1.s"
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# Try 'finishing' from foo3
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# Some architectures will have one or more instructions after the
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# call instruction which still is part of the call sequence, so we
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# must be prepared for a "finish" to show us the caller line
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# again as well as the statement after.
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gdb_test_multiple "finish" "finish from foo3" {
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-re "Run till exit from.*\[\r\n\]$line_call_foo3\[ \t\]+gdbasm_call foo3.*$gdb_prompt $" {
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pass "finish from foo3"
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gdb_test "s" ".*" "s after finish"
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}
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-re "Run till exit from.*\[\r\n\]$line_call_foo3_again\[ \t\]+gdbasm_call foo3.*$gdb_prompt $" {
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pass "finish from foo3"
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}
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}
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# Try 'info source' from asmsrc2.s
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gdb_test "info source" \
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"Current source file is .*asmsrc2.s.*Source language is asm.*" \
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"info source asmsrc2.s"
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# Try 'info sources'. This can produce a lot of output on systems
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# with dynamic linking, where the system's shared libc was compiled
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# with debugging info; for example, on Linux, this produces 47kb of
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# output. So we consume it as we go.
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set seen_asmsrc_1 0
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set seen_asmsrc_2 0
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gdb_test_multiple "info sources" "info sources" {
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-re "^\[^,\]*asmsrc1.s(, |\[\r\n\]+)" {
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set seen_asmsrc_1 1
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exp_continue
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}
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-re "^\[^,\]*asmsrc2.s(, |\[\r\n\]+)" {
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set seen_asmsrc_2 1
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exp_continue
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}
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-re ", " {
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exp_continue
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}
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-re "$gdb_prompt $" {
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if {$seen_asmsrc_1 && $seen_asmsrc_2} {
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pass "info sources"
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} else {
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fail "info sources"
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}
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}
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}
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# Try 'info line'
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gdb_test "info line" \
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"Line $line_call_foo3_again of.*asmsrc2.s.*starts at.*<\\.?foo2+.*> and ends at.*<\\.?foo2+.*>." \
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"info line"
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# Try 'nexting' over next call to foo3
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gdb_test "next" "$line_foo2_leave\[ \t\]+gdbasm_leave" "next over foo3"
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# Try 'return' from foo2
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# Like "finish", "return" command also can return to the caller
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# line again or the statement after, depending on the architecture.
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gdb_test_multiple "return" "return from foo2" {
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-re "Make (foo2|selected stack frame) return now\\? .y or n. " {
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send_gdb "y\n"
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exp_continue
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}
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-re "\#0.*main .*$line_call_foo2\[ \t\]+gdbasm_call foo2.*$gdb_prompt $" {
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pass "return from foo2"
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gdb_test "s" ".*" "s after return"
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}
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-re "\#0.*main .*$line_main_exit\[ \t\]+gdbasm_exit0.*$gdb_prompt $" {
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pass "return from foo2"
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}
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}
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# Disassemble something, check the output
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proc test_dis { command var } {
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global gdb_prompt
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gdb_test_multiple "${command}" "${command}" {
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-re "${var}.*:.*(Cannot access|Bad address)" {
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# The "disassembler" was only accessing the local
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# executable and that would cause attempts to disassemble
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# variables to fail (memory not valid).
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fail "${command} (memory read error)"
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}
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-re "${var}.*:.*${gdb_prompt}" {
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pass "${command}"
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}
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}
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}
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# See if we can look at a global variable, three ways
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gdb_test "print (int) globalvar" ".* = 11" "look at global variable"
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test_dis "x/i &globalvar" "globalvar"
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test_dis "disassem &globalvar, (int *) &globalvar+1" "globalvar"
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|
|
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# See if we can look at a static variable, three ways
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|
gdb_test "print (int) staticvar" ".* = 5" "look at static variable"
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|
test_dis "x/i &staticvar" "staticvar"
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test_dis "disassem &staticvar, (int *) &staticvar+1" "staticvar"
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|
|
|
# See if we can look at a static function
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|
gdb_test "disassem foostatic" ".*<\\+0>:.*End of assembler dump." \
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|
"look at static function"
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|
|
|
remote_exec build "rm -f $arch_inc"
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|
remote_exec build "rm -f $note_inc"
|