2010-12-23 Yao Qi <yao@codesourcery.com>
* gdb.arch/arm-disp-step.exp: New. * gdb.arch/arm-disp-step.S: New.
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2010-12-23 Yao Qi <yao@codesourcery.com>
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* gdb.arch/arm-disp-step.exp: New.
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* gdb.arch/arm-disp-step.S: New.
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2010-12-21 Tom Tromey <tromey@redhat.com>
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* gdb.threads/execl.exp: Update.
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/* Copyright 2010 Free Software Foundation, Inc.
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This file is part of GDB.
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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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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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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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.syntax unified
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.text
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.type main,%function
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#if defined (__thumb__) || defined (__thumb2__)
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.code 16
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.thumb_func
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#endif
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.globl main
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main:
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push {r7, lr}
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add sp, sp, #4
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mov r7, sp
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/* Test call and return */
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.global test_call
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test_call:
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bl test_call_subr
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.global test_ret_end
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test_ret_end:
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nop @ Location test_ret_end
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/* Test branch */
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bl test_branch
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/* Test ldr from pc */
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bl test_ldr_pc
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/* Test ldm/stm only in ARM mode */
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#if !defined (__thumb__) && !defined (__thumb2__)
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bl test_ldm_stm_pc
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#endif
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/* Return */
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mov sp, r7
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sub sp, sp, #4
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movs r0, #0
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pop {r7, pc}
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.size main, .-main
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.global test_call_subr
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#if defined (__thumb__) || defined (__thumb2__)
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.code 16
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.thumb_func
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#endif
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.type test_call_subr, %function
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test_call_subr:
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nop
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.global test_call_end
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test_call_end:
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nop @ Location test_call_end
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.global test_ret
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test_ret:
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bx lr
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.size test_call_subr, .-test_call_subr
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.global test_branch
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#if defined (__thumb__) || defined (__thumb2__)
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.code 16
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.thumb_func
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#endif
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.type test_branch, %function
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test_branch:
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b L_branch
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.global
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L_branch:
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bx lr
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.size test_branch, .-test_branch
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.global test_ldr_pc
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#if defined (__thumb__) || defined (__thumb2__)
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.code 16
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.thumb_func
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#endif
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.type test_ldr_pc, %function
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test_ldr_pc:
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ldr r1, [pc, #0]
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.global
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test_ldr_pc_ret:
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bx lr
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.size test_ldr_pc, .-test_ldr_pc
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#if !defined (__thumb__) && !defined (__thumb2__)
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.global test_ldm_stm_pc
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.type test_ldm_stm_pc, %function
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test_ldm_stm_pc:
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stmdb sp!, {lr, pc}
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ldmia sp!, {r0, r1}
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ldr r0, .L1
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stmdb sp!, {r0}
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.global
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test_ldm_pc:
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ldmia sp!, {pc}
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.global
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test_ldm_stm_pc_ret:
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bx lr
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.align 2
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.L1:
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.word test_ldm_stm_pc_ret
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.size test_ldm_stm_pc, .-test_ldm_stm_pc
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#endif
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@ -0,0 +1,172 @@
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# Copyright 2010 Free Software Foundation, Inc.
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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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# This file is part of the gdb testsuite.
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# Test arm displaced stepping.
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if $tracelevel {
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strace $tracelevel
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}
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if {![istarget "arm*-*-*"]} then {
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verbose "Skipping arm displaced stepping tests."
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return
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}
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set testfile "arm-disp-step"
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set srcfile ${testfile}.S
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set binfile ${objdir}/${subdir}/${testfile}
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set additional_flags "-Wa,-g"
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if { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable [list debug $additional_flags]] != "" } {
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untested arm-disp-step.exp
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return -1
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}
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#########################################
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# Test ldm/stm related to PC.
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proc test_ldm_stm_pc {} {
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global srcfile
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# Try to set breakpoint on test_ldm_stm_pc. If symbol 'test_ldm_stm_pc'
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# can't be resolved, test case is compiled in Thumb mode, skip it.
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gdb_test_multiple "break *test_ldm_stm_pc" "break test_ldm_stm_pc" {
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-re "Breakpoint.*at.* file .*$srcfile, line.*" {
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pass "break test_ldm_stm_pc"
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}
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-re "Function \"test_ldm_stm_pc\" not defined\..*Make breakpoint pending on future shared library load.*y or .n.. $" {
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gdb_test "n" "" "Test case is compiled in Thumb mode"
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return
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}
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}
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gdb_test "break *test_ldm_pc" \
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"Breakpoint.*at.* file .*$srcfile, line.*" \
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"break test_ldm_pc"
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gdb_test "break *test_ldm_stm_pc_ret" \
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"Breakpoint.*at.* file .*$srcfile, line.*" \
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"break test_ldm_stm_pc_ret"
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gdb_continue_to_breakpoint "continue to test_ldm_stm_pc" \
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".*stmdb.*sp\!\,.*\{lr\, pc\}.*"
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gdb_continue_to_breakpoint "continue to test_ldm_pc" \
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".*ldmia.*sp\!\,.*\{pc\}.*"
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gdb_continue_to_breakpoint "continue to test_ldm_stm_pc_ret" \
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".*bx lr.*"
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}
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##########################################
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# Test call/ret.
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proc test_call_ret {} {
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global srcfile
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gdb_test "break *test_call_end" \
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"Breakpoint.*at.* file .*$srcfile, line.*" \
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"break test_call_end"
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gdb_test "break *test_ret" \
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"Breakpoint.*at.* file .*$srcfile, line.*" \
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"break test_ret"
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gdb_test "break *test_ret_end" \
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"Breakpoint.*at.* file .*$srcfile, line.*" \
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"break test_ret_end"
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gdb_continue_to_breakpoint "continue to test_call_end" \
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".*@ Location test_call_end.*"
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gdb_continue_to_breakpoint "continue to test_ret" \
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".*bx lr.*"
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gdb_continue_to_breakpoint "continue to test_ret_end" \
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".*@ Location test_ret_end.*"
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}
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#########################################
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# Test branch
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proc test_branch {} {
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global srcfile
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gdb_test "break *test_branch" \
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"Breakpoint.*at.* file .*$srcfile, line.*" \
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"break test_branch"
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gdb_test "break *L_branch" \
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"Breakpoint.*at.* file .*$srcfile, line.*" \
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"break Lbranch"
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gdb_continue_to_breakpoint "continue to test_branch" \
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".*b.*L_branch.*"
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gdb_continue_to_breakpoint "continue to Lbranch" \
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".*bx lr.*"
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}
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#########################################
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# Test ldr from pc
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proc test_ldr_from_pc {} {
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global srcfile
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gdb_test "break *test_ldr_pc" \
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"Breakpoint.*at.* file .*$srcfile, line.*" \
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"break test_ldr_pc"
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gdb_test "break test_ldr_pc_ret" \
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"Breakpoint.*at.* file .*$srcfile, line.*" \
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"break test_ldr_pc_ret"
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gdb_continue_to_breakpoint "continue to test_ldr_pc" \
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".*ldr.*r1\,.*\[pc, #0\].*"
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gdb_continue_to_breakpoint "continue to Lbranch" \
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".*bx lr.*"
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}
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# Get things started.
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clean_restart ${testfile}
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# Turn displaced stepping off before runto main. When displaced stepping
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# is on, and we type 'run', GDB will first try to single step on _dl_debug_state,
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# which is in library might be compiled in Thumb.
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gdb_test_no_output "set displaced-stepping off"
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if ![runto_main] then {
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fail "Can't run to main"
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return 0
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}
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gdb_test_no_output "set displaced-stepping on"
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gdb_test "show displaced-stepping" ".* displaced stepping .* is on.*"
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gdb_test "break *test_call" \
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"Breakpoint.*at.* file .*$srcfile, line.*" \
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"break test_call"
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gdb_test_multiple "continue" "continue to test_call" {
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-re ".*bl test_call_subr.*" {
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pass "continue to test_call"
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}
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-re "Displaced stepping is only supported in" {
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kfail "gdb/NNNN" $testfile
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return
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}
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}
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test_call_ret
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test_branch
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test_ldr_from_pc
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test_ldm_stm_pc
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##########################################
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# Done, run program to exit.
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gdb_continue_to_end "arm-disp-step"
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