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# Copyright 2005-2020 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/>.
if ![istarget "alpha*-*-*"] then {
verbose "Skipping alpha step tests."
return
}
set testfile "alpha-step"
set srcfile ${testfile}.c
set binfile ${objdir}/${subdir}/${testfile}
if { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable {}] != "" } {
unsupported "failed to compile"
return -1
}
gdb_exit
gdb_start
gdb_reinitialize_dir $srcdir/$subdir
gdb_load ${binfile}
proc test_stepi {function } {
# Restart the program from scratch. If GDB got confused during one
# of the previous tests, this makes sure that it doesn't affect
# this series of tests.
if ![runto_main] then {
fail "can't run to main"
return 0
}
# Insert a breakpoint on the FP branch instruction inside FUNCTION.
# Since the function has been hand written, we know this instruction
# is a "fb$function" located at FUNCTION+4.
gdb_test "break *$function+4" \
"Breakpoint .* at .*" \
"breakpoint on fb$function instruction"
gdb_test "continue" \
"Breakpoint .*, 0x\[0-9a-fA-F\]+ in $function\(\).*" \
"continue to fb$function instruction (first call)"
# Extra check to make sure we stopped on the FP branch instruction.
gdb_test "x /i \$pc" \
"0x\[0-9a-fA-F\]+ <.*>:\[ \t\]+fb$function.*" \
"Check breakpoint on fb$function instruction (first call)"
# Step test, followed by the check that we landed on the expected
# instruction (the testcase should be written in such a way that
# the branch is taken on the first call to this function.
gdb_test "stepi" \
"0x\[0-9a-fA-F\]+.*" \
"stepi on fb$function (first call)"
gdb_test "x /i \$pc" \
"0x\[0-9a-fA-F\]+ <.*>:\[ \t\]+ret.*" \
"Check stepi over fb$function stopped on ret"
# Continue again. FUNCTION should be called a second time, this time
# with an argument such that the FP branch will not be taken.
gdb_test "continue" \
"Breakpoint .*, 0x\[0-9a-fA-F\]+ in $function\(\).*" \
"continue to fb$function instruction (second call)"
# Extra check to make sure we stopped on the FP branch instruction.
gdb_test "x /i \$pc" \
"0x\[0-9a-fA-F\]+ <.*>:\[ \t\]+fb$function.*" \
"Check breakpoint on fb$function instruction (second call)"
# Step test, branch should not be taken.
gdb_test "stepi" \
"0x\[0-9a-fA-F\]+.*" \
"stepi on fb$function (branch not taken)"
# Extra check to verify that we landed on the instruction we expected.
gdb_test "x /i \$pc" \
"0x\[0-9a-fA-F\]+ <.*>:\[ \t\]+fneg.*" \
"check stepi over fb$function stopped on fneg instruction"
}
test_stepi "gt"
test_stepi "ge"
test_stepi "lt"
test_stepi "le"
test_stepi "eq"
test_stepi "ne"
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