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# Copyright 2009-2015 Free Software Foundation, Inc.
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
# This file is part of the gdb testsuite.
# Test amd64 displaced stepping.
if { ![istarget x86_64-*-* ] || ![is_lp64_target] } {
verbose "Skipping x86_64 displaced stepping tests."
return
}
set newline "\[\r\n\]*"
standard_testfile .S
set additional_flags "-Wa,-g"
if { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable [list debug $additional_flags]] != "" } {
untested amd64-disp-step.exp
return -1
}
# Get things started.
gdb_exit
gdb_start
gdb_reinitialize_dir $srcdir/$subdir
gdb_load ${binfile}
gdb_test "set displaced-stepping on" ""
gdb_test "show displaced-stepping" ".* displaced stepping .* is on.*"
if ![runto_main] then {
fail "Can't run to main"
return 0
}
##########################################
# Test call/ret.
gdb_test "break test_call" \
"Breakpoint.*at.* file .*$srcfile, line.*" \
"break test_call"
gdb_test "break test_call_end" \
"Breakpoint.*at.* file .*$srcfile, line.*" \
"break test_call_end"
gdb_test "break test_ret" \
"Breakpoint.*at.* file .*$srcfile, line.*" \
"break test_ret"
gdb_test "break test_ret_end" \
"Breakpoint.*at.* file .*$srcfile, line.*" \
"break test_ret_end"
gdb_test "continue" \
"Continuing.*Breakpoint.*, test_call ().*" \
"continue to test_call"
gdb_test "continue" \
"Continuing.*Breakpoint.*, test_call_end ().*" \
"continue to test_call_end"
gdb_test "continue" \
"Continuing.*Breakpoint.*, test_ret ().*" \
"continue to test_ret"
gdb_test "continue" \
"Continuing.*Breakpoint.*, test_ret_end ().*" \
"continue to test_ret_end"
##########################################
# Test abs-jmp/rep-ret.
gdb_test "break test_abs_jmp" \
"Breakpoint.*at.* file .*$srcfile, line.*" \
"break test_abs_jmp"
gdb_test "break test_abs_jmp_end" \
"Breakpoint.*at.* file .*$srcfile, line.*" \
"break test_abs_jmp_end"
gdb_test "break test_rep_ret" \
"Breakpoint.*at.* file .*$srcfile, line.*" \
"break test_rep_ret"
gdb_test "break test_rep_ret_end" \
"Breakpoint.*at.* file .*$srcfile, line.*" \
"break test_rep_ret_end"
gdb_test "continue" \
"Continuing.*Breakpoint.*, test_abs_jmp ().*" \
"continue to test_abs_jmp"
gdb_test "continue" \
"Continuing.*Breakpoint.*, test_abs_jmp_end ().*" \
"continue to test_abs_jmp_end"
gdb_test "continue" \
"Continuing.*Breakpoint.*, test_rep_ret ().*" \
"continue to test_rep_ret"
gdb_test "continue" \
"Continuing.*Breakpoint.*, test_rep_ret_end ().*" \
"continue to test_rep_ret_end"
##########################################
# Test syscall.
gdb_test "break test_syscall" \
"Breakpoint.*at.* file .*$srcfile, line.*" \
"break test_syscall"
gdb_test "break test_syscall_end" \
"Breakpoint.*at.* file .*$srcfile, line.*" \
"break test_syscall_end"
gdb_test "continue" \
"Continuing.*Breakpoint.*, test_syscall ().*" \
"continue to test_syscall"
gdb_test "continue" \
"Continuing.*Breakpoint.*, test_syscall_end ().*" \
"continue to test_syscall_end"
##########################################
# int3 (with prefixes)
# These don't occur in normal code, but gdb should still DTRT.
gdb_test "break test_int3" \
"Breakpoint.*at.* file .*$srcfile, line.*" \
"break test_int3"
gdb_test "break test_int3_end" \
"Breakpoint.*at.* file .*$srcfile, line.*" \
"break test_int3_end"
gdb_test "continue" \
"Continuing.*Breakpoint.*, test_int3 ().*" \
"continue to test_int3"
gdb_test "continue" \
"Continuing.*Breakpoint.*, test_int3_end ().*" \
"continue to test_int3_end"
##########################################
# Test rip-relative.
# GDB picks a spare register to hold the rip-relative address.
# Exercise all the possibilities (rax-rdi, sans rsp).
# The order must much the order in srcfile.
set rip_regs { "rax" "rbx" "rcx" "rdx" "rbp" "rsi" "rdi" }
# Assign val to all specified regs.
proc set_regs { regs val } {
global gdb_prompt
foreach reg ${regs} {
# Use send_gdb/gdb_expect so that these aren't logged as pass/fail.
send_gdb "set \$${reg} = ${val}\n"
gdb_expect 10 {
-re "$gdb_prompt $" {
verbose "Setting ${reg} to ${val}." 2
}
timeout {
warning "Couldn't set ${reg} to ${val}."
}
}
}
}
# Verify all REGS equal VAL, except REG which equals REG_VAL.
proc verify_regs { test_name regs val except_reg except_reg_val } {
global newline
foreach reg ${regs} {
set expected ${val}
if { "${reg}" == "${except_reg}" } {
set expected ${except_reg_val}
}
# The cast to (int) is because RBP is printed as a pointer.
gdb_test "p (int) \$${reg}" " = ${expected}${newline}" "${test_name} ${reg} expected value"
}
}
proc rip_test { reg } {
global srcfile rip_regs
set test_start_label "test_rip_${reg}"
set test_end_label "test_rip_${reg}_end"
gdb_test "break ${test_start_label}" \
"Breakpoint.*at.* file .*$srcfile, line.*" \
"break ${test_start_label}"
gdb_test "break ${test_end_label}" \
"Breakpoint.*at.* file .*$srcfile, line.*" \
"break ${test_end_label}"
gdb_test "continue" \
"Continuing.*Breakpoint.*, ${test_start_label} ().*" \
"continue to ${test_start_label}"
set_regs ${rip_regs} 0
gdb_test "continue" \
"Continuing.*Breakpoint.*, ${test_end_label} ().*" \
"continue to ${test_end_label}"
verify_regs "test rip w/${reg}" ${rip_regs} 0 ${reg} 42
}
foreach reg ${rip_regs} {
rip_test $reg
}
##########################################
# Done, run program to exit.
gdb_continue_to_end "amd64-disp-step"
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