Projet_SETI_RISC-V/riscv-gnu-toolchain/binutils/gdb/testsuite/gdb.arch/mips16-thunks.exp
2023-03-06 14:48:14 +01:00

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# Copyright 2012-2022 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/>.
# Contributed by Mentor Graphics, written by Maciej W. Rozycki.
# Test MIPS16 thunk support.
# This should work on any targets that support MIPS16 execution, including
# Linux and bare-iron ones, but not all of them do, for example MIPS16
# support has been added to Linux relatively late in the game. Also besides
# environment support, the target processor has to support the MIPS16 ASE.
# Finally as of this writing MIPS16 support has only been implemented in the
# toolchain for a subset of ABIs, so we need to check that a MIPS16
# executable can be built and run at all before we attempt the actual test.
if { ![istarget "mips*-*-*"] } then {
verbose "Skipping MIPS16 thunk support tests."
return
}
# A helper to set caller's SRCFILE and OBJFILE based on FILENAME and SUFFIX.
proc set_src_and_obj { filename { suffix "" } } {
upvar srcfile srcfile
upvar objfile objfile
global srcdir
global subdir
if ![string equal "$suffix" ""] then {
set suffix "-$suffix"
}
set srcfile ${srcdir}/${subdir}/${filename}.c
set objfile [standard_output_file ${filename}${suffix}.o]
}
# First check if a trivial MIPS16 program can be built and debugged. This
# verifies environment and processor support, any failure here must be
# classed as the lack of support.
set testname mips16-thunks-main
set_src_and_obj mips16-thunks-inmain
set options [list debug nowarnings additional_flags=-mips16]
set objfiles ${objfile}
gdb_compile ${srcfile} ${objfile} object ${options}
set_src_and_obj mips16-thunks-main
set options [list debug nowarnings additional_flags=-mips16]
lappend objfiles ${objfile}
gdb_compile ${srcfile} ${objfile} object ${options}
set binfile [standard_output_file ${testname}]
set options [list debug nowarnings]
if { [gdb_compile ${objfiles} ${binfile} executable ${options}] != "" } then {
unsupported "no MIPS16 support in the toolchain."
return
}
clean_restart ${testname}
gdb_breakpoint inmain
gdb_run_cmd
gdb_test_multiple "" "check for MIPS16 support in the processor" {
-re "Breakpoint 1.*inmain .*$gdb_prompt $" {
gdb_test_multiple "finish" \
"check for MIPS16 support in the processor" {
-re "Value returned is \\\$\[0-9\]+ = 0\[^0-9\].*$gdb_prompt $" {
verbose "MIPS16 support check successful."
}
-re "$gdb_prompt $" {
unsupported "no MIPS16 support in the processor."
return
}
default {
unsupported "no MIPS16 support in the processor."
return
}
}
}
-re "$gdb_prompt $" {
unsupported "no MIPS16 support in the processor."
return
}
default {
unsupported "no MIPS16 support in the processor."
return
}
}
# Check if MIPS16 PIC code can be built and debugged. We want to check
# PIC and MIPS16 thunks are handled correctly together if possible, but
# on targets that do not support PIC code, e.g. bare iron, we still want
# to test the rest of functionality.
set testname mips16-thunks-pic
set picflag ""
set_src_and_obj mips16-thunks-inmain pic
set options [list \
debug nowarnings additional_flags=-mips16 additional_flags=-fPIC]
set objfiles ${objfile}
gdb_compile ${srcfile} ${objfile} object ${options}
set_src_and_obj mips16-thunks-main pic
set options [list \
debug nowarnings additional_flags=-mips16 additional_flags=-fPIC]
lappend objfiles ${objfile}
gdb_compile ${srcfile} ${objfile} object ${options}
set binfile [standard_output_file ${testname}]
set options [list debug nowarnings additional_flags=-fPIC]
if { [gdb_compile ${objfiles} ${binfile} executable ${options}] == "" } then {
clean_restart ${testname}
gdb_breakpoint inmain
gdb_run_cmd
gdb_test_multiple "" "check for PIC support" {
-re "Breakpoint 1.*inmain .*$gdb_prompt $" {
note "PIC support present, will make additional PIC thunk checks."
set picflag additional_flags=-fPIC
}
-re "$gdb_prompt $" {
note "No PIC support, skipping additional PIC thunk checks."
}
default {
note "No PIC support, skipping additional PIC thunk checks."
}
}
} else {
note "No PIC support, skipping additional PIC thunk checks."
}
# OK, build the twisted executable. This program contains the following
# MIPS16 thunks:
# - __call_stub_fp_sin,
# - __call_stub_fp_sinblah,
# - __call_stub_fp_sinfrob,
# - __call_stub_fp_sinhelper,
# - __call_stub_lsinhelper,
# - __fn_stub_lsinmips16,
# - __fn_stub_sinblah16,
# - __fn_stub_sinfrob16,
# - __fn_stub_sinmips16,
# - __mips16_call_stub_df_2,
# - __mips16_ret_df.
# Additionally, if PIC code is supported, it contains the following PIC thunks:
# - .pic.__mips16_call_stub_df_2,
# - .pic.__mips16_ret_df,
# - .pic.sinblah,
# - .pic.sinblah16,
# - .pic.sinfrob,
# - .pic.sinfrob16.
set testname mips16-thunks-sin
set_src_and_obj mips16-thunks-sinmain
set options [list debug nowarnings additional_flags=-mips16]
set objfiles ${objfile}
gdb_compile ${srcfile} ${objfile} object ${options}
set_src_and_obj mips16-thunks-sin
set options [list debug nowarnings additional_flags=-mno-mips16]
lappend objfiles ${objfile}
gdb_compile ${srcfile} ${objfile} object ${options}
set_src_and_obj mips16-thunks-sinmips16
set options [list debug nowarnings additional_flags=-mips16]
lappend objfiles ${objfile}
gdb_compile ${srcfile} ${objfile} object ${options}
set_src_and_obj mips16-thunks-sinfrob
set options [list \
debug nowarnings additional_flags=-mno-mips16 ${picflag}]
lappend objfiles ${objfile}
gdb_compile ${srcfile} ${objfile} object ${options}
set_src_and_obj mips16-thunks-sinfrob16
set options [list \
debug nowarnings additional_flags=-mips16 ${picflag}]
lappend objfiles ${objfile}
gdb_compile ${srcfile} ${objfile} object ${options}
set binfile [standard_output_file ${testname}]
set options [list debug nowarnings]
gdb_compile ${objfiles} ${binfile} executable ${options}
clean_restart ${testname}
if ![runto_main] then {
return
}
# Build some useful regular expressions out of a list of functions FUNCS
# to be used to match against backtraces.
proc build_frames_re { funcs } {
upvar anyframe anyframe
upvar frames frames
upvar frame frame
upvar func func
set fid 0
set argsandsource " +\\\(.*\\\) +at +\[^\r\n\]+\r\n"
set addrin "(?:\[^ \]+ +in +)?"
set anyframe "#${fid} +${addrin}(\[^ \]+)${argsandsource}"
set frame "#${fid} +${addrin}${func}${argsandsource}"
set frames "$frame"
foreach f [lrange $funcs 1 end] {
incr fid
append frames "#${fid} +${addrin}${f}${argsandsource}"
}
}
# Single-step through the function that is at the head of function list
# FUNCS until a different function (frame) is reached. Before each step
# check the backtrace against FUNCS. ID is used for reporting, to tell
# apart different calls to this procedure for the same function. If
# successful, then return the name of the function we have stopped in.
proc step_through { id funcs } {
global gdb_prompt
set func [lindex $funcs 0]
build_frames_re "$funcs"
set msg "single-stepping through \"${func}\" ($id)"
# Arbitrarily limit the maximium number of steps made to avoid looping
# indefinitely in the case something goes wrong, increase as (if)
# necessary.
set count 8
while { $count > 0 } {
if { [gdb_test_multiple "backtrace" "$msg (backtrace)" {
-re "${frames}$gdb_prompt $" {
if { [gdb_test_multiple "step" "$msg (step)" {
-re "$gdb_prompt $" {
if { [gdb_test_multiple "frame" "$msg (frame)" {
-re "${frame}.*$gdb_prompt $" {
}
-re "${anyframe}.*$gdb_prompt $" {
pass "$msg"
return $expect_out(1,string)
}
}] != 0 } then {
return ""
}
}
}] != 0 } then {
return ""
}
}
}] != 0 } then {
return ""
}
incr count -1
}
fail "$msg (too many steps)"
return ""
}
# Finish the current function that must be one that is at the head of
# function list FUNCS. Before that check the backtrace against FUNCS.
# ID is used for reporting, to tell apart different calls to this
# procedure for the same function. If successful, then return the name
# of the function we have stopped in.
proc finish_through { id funcs } {
global gdb_prompt
set func [lindex $funcs 0]
build_frames_re "$funcs"
set msg "finishing \"${func}\" ($id)"
gdb_test_multiple "backtrace" "$msg (backtrace)" {
-re "${frames}$gdb_prompt $" {
gdb_test_multiple "finish" "$msg (finish)" {
-re "Run till exit from ${frame}.*$gdb_prompt $" {
gdb_test_multiple "frame" "$msg (frame)" {
-re "${anyframe}.*$gdb_prompt $" {
pass "$msg"
return $expect_out(1,string)
}
}
}
}
}
}
return ""
}
# Report PASS if VAL is equal to EXP, otherwise report FAIL, using MSG.
proc pass_if_eq { val exp msg } {
if [string equal "$val" "$exp"] then {
pass "$msg"
} else {
fail "$msg"
}
}
# Check if FUNC is equal to WANT. If not, then assume that we have stepped
# into a library call. In this case finish it, then step out of the caller.
# ID is used for reporting, to tell apart different calls to this procedure
# for the same function. If successful, then return the name of the
# function we have stopped in.
proc finish_if_ne { id func want funcs } {
if ![string equal "$func" "$want"] then {
set call "$func"
set want [lindex $funcs 0]
set func [finish_through "$id" [linsert $funcs 0 "$func"]]
pass_if_eq "$func" "$want" "\"${call}\" finishing to \"${want}\" ($id)"
set func [step_through "$id" $funcs]
}
return "$func"
}
# Now single-step through the program, making sure all thunks are correctly
# stepped over and omitted from backtraces.
set id 1
set func [step_through $id [list main]]
pass_if_eq "$func" sinfrob16 "stepping from \"main\" into \"sinfrob16\" ($id)"
incr id
set func [step_through $id [list sinfrob16 main]]
set func [finish_if_ne $id "$func" main [list sinfrob16 main]]
pass_if_eq "$func" main "stepping from \"sinfrob16\" back to \"main\" ($id)"
incr id
set func [step_through $id [list main]]
pass_if_eq "$func" sinfrob "stepping from \"main\" into \"sinfrob\" ($id)"
incr id
set func [step_through $id [list sinfrob main]]
set func [finish_if_ne $id "$func" main [list sinfrob main]]
pass_if_eq "$func" main "stepping from \"sinfrob\" back to \"main\" ($id)"
# 5
incr id
set func [step_through $id [list main]]
pass_if_eq "$func" sinhelper "stepping from \"main\" into \"sinhelper\" ($id)"
incr id
set func [step_through $id [list sinhelper main]]
set func [finish_if_ne $id "$func" sinfrob16 [list sinhelper main]]
pass_if_eq "$func" sinfrob16 \
"stepping from \"sinhelper\" into \"sinfrob16\" ($id)"
incr id
set func [step_through $id [list sinfrob16 sinhelper main]]
set func [finish_if_ne $id "$func" sinhelper [list sinfrob16 sinhelper main]]
pass_if_eq "$func" sinhelper \
"stepping from \"sinfrob16\" back to \"sinhelper\" ($id)"
incr id
set func [step_through $id [list sinhelper main]]
pass_if_eq "$func" sinfrob "stepping from \"sinhelper\" into \"sinfrob\" ($id)"
incr id
set func [step_through $id [list sinfrob sinhelper main]]
set func [finish_if_ne $id "$func" sinhelper [list sinfrob sinhelper main]]
pass_if_eq "$func" sinhelper \
"stepping from \"sinfrob\" back to \"sinhelper\" ($id)"
# 10
incr id
set func [step_through $id [list sinhelper main]]
pass_if_eq "$func" sinmips16 \
"stepping from \"sinhelper\" into \"sinmips16\" ($id)"
incr id
set func [step_through $id [list sinmips16 sinhelper main]]
set func [finish_if_ne $id "$func" sinfrob16 [list sinmips16 sinhelper main]]
pass_if_eq "$func" sinfrob16 \
"stepping from \"sinmips16\" into \"sinfrob16\" ($id)"
incr id
set func [step_through $id [list sinfrob16 sinmips16 sinhelper main]]
set func [finish_if_ne $id "$func" sinmips16 \
[list sinfrob16 sinmips16 sinhelper main]]
pass_if_eq "$func" sinmips16 \
"stepping from \"sinfrob16\" back to \"sinmips16\" ($id)"
incr id
set func [step_through $id [list sinmips16 sinhelper main]]
pass_if_eq "$func" sinfrob "stepping from \"sinmips16\" into \"sinfrob\" ($id)"
incr id
set func [step_through $id [list sinfrob sinmips16 sinhelper main]]
set func [finish_if_ne $id "$func" sinhelper \
[list sinfrob sinmips16 sinhelper main]]
pass_if_eq "$func" sinmips16 \
"stepping from \"sinfrob\" back to \"sinmips16\" ($id)"
# 15
incr id
set func [step_through $id [list sinmips16 sinhelper main]]
pass_if_eq "$func" sinfrob16 \
"stepping from \"sinmips16\" into \"sinfrob16\" (indirectly) ($id)"
incr id
set func [step_through $id [list sinfrob16 sinmips16 sinhelper main]]
set func [finish_if_ne $id "$func" sinmips16 \
[list sinfrob16 sinmips16 sinhelper main]]
pass_if_eq "$func" sinmips16 \
"stepping from \"sinfrob16\" back to \"sinmips16\" (indirectly) ($id)"
incr id
set func [step_through $id [list sinmips16 sinhelper main]]
pass_if_eq "$func" sinfrob \
"stepping from \"sinmips16\" into \"sinfrob\" (indirectly) ($id)"
incr id
set func [step_through $id [list sinfrob sinmips16 sinhelper main]]
set func [finish_if_ne $id "$func" sinhelper \
[list sinfrob sinmips16 sinhelper main]]
pass_if_eq "$func" sinmips16 \
"stepping from \"sinfrob\" back to \"sinmips16\" (indirectly) ($id)"
incr id
set func [step_through $id [list sinmips16 sinhelper main]]
pass_if_eq "$func" sinhelper \
"stepping from \"sinmips16\" back to \"sinhelper\" ($id)"
# 20
incr id
set func [step_through $id [list sinhelper main]]
pass_if_eq "$func" main "stepping from \"sinhelper\" back to \"main\" ($id)"
incr id
set func [step_through $id [list main]]
pass_if_eq "$func" sinblah "stepping from \"main\" into \"sinblah\" ($id)"
incr id
set func [step_through $id [list sinblah main]]
set func [finish_if_ne $id "$func" main [list sinblah main]]
pass_if_eq "$func" main "stepping from \"sinblah\" back to \"main\" ($id)"
incr id
set func [step_through $id [list main]]
pass_if_eq "$func" sinblah16 "stepping from \"main\" into \"sinblah16\" ($id)"
incr id
set func [step_through $id [list sinblah16 main]]
set func [finish_if_ne $id "$func" main [list sinblah16 main]]
pass_if_eq "$func" main "stepping from \"sinblah16\" back to \"main\" ($id)"
# 25
incr id
set func [step_through $id [list main]]
pass_if_eq "$func" lsinhelper \
"stepping from \"main\" into \"lsinhelper\" ($id)"
incr id
set func [step_through $id [list lsinhelper main]]
set func [finish_if_ne $id "$func" sinblah [list lsinhelper main]]
pass_if_eq "$func" sinblah \
"stepping from \"lsinhelper\" into \"sinblah\" ($id)"
incr id
set func [step_through $id [list sinblah lsinhelper main]]
set func [finish_if_ne $id "$func" lsinhelper [list sinblah lsinhelper main]]
pass_if_eq "$func" lsinhelper \
"stepping from \"sinblah\" back to \"lsinhelper\" ($id)"
incr id
set func [step_through $id [list lsinhelper main]]
pass_if_eq "$func" sinblah16 \
"stepping from \"lsinhelper\" into \"sinblah16\" ($id)"
incr id
set func [step_through $id [list sinblah16 lsinhelper main]]
set func [finish_if_ne $id "$func" lsinhelper [list sinblah16 lsinhelper main]]
pass_if_eq "$func" lsinhelper \
"stepping from \"sinblah16\" back to \"lsinhelper\" ($id)"
# 30
incr id
set func [step_through $id [list lsinhelper main]]
pass_if_eq "$func" lsinmips16 \
"stepping from \"lsinhelper\" into \"lsinmips16\" ($id)"
incr id
set func [step_through $id [list lsinmips16 lsinhelper main]]
set func [finish_if_ne $id "$func" sinblah [list lsinmips16 lsinhelper main]]
pass_if_eq "$func" sinblah \
"stepping from \"lsinmips16\" into \"sinblah\" ($id)"
incr id
set func [step_through $id [list sinblah lsinmips16 lsinhelper main]]
set func [finish_if_ne $id "$func" lsinmips16 \
[list sinblah lsinmips16 lsinhelper main]]
pass_if_eq "$func" lsinmips16 \
"stepping from \"sinblah\" back to \"lsinmips16\" ($id)"
incr id
set func [step_through $id [list lsinmips16 lsinhelper main]]
pass_if_eq "$func" sinblah16 \
"stepping from \"lsinmips16\" into \"sinblah16\" ($id)"
incr id
set func [step_through $id [list sinblah16 lsinmips16 lsinhelper main]]
set func [finish_if_ne $id "$func" lsinhelper \
[list sinblah16 lsinmips16 lsinhelper main]]
pass_if_eq "$func" lsinmips16 \
"stepping from \"sinblah16\" back to \"lsinmips16\" ($id)"
# 35
incr id
set func [step_through $id [list lsinmips16 lsinhelper main]]
pass_if_eq "$func" sinblah \
"stepping from \"lsinmips16\" into \"sinblah\" (indirectly) ($id)"
incr id
set func [step_through $id [list sinblah lsinmips16 lsinhelper main]]
set func [finish_if_ne $id "$func" lsinmips16 \
[list sinblah lsinmips16 lsinhelper main]]
pass_if_eq "$func" lsinmips16 \
"stepping from \"sinblah\" back to \"lsinmips16\" (indirectly) ($id)"
incr id
set func [step_through $id [list lsinmips16 lsinhelper main]]
pass_if_eq "$func" sinblah16 \
"stepping from \"lsinmips16\" into \"sinblah16\" (indirectly) ($id)"
incr id
set func [step_through $id [list sinblah16 lsinmips16 lsinhelper main]]
set func [finish_if_ne $id "$func" lsinhelper \
[list sinblah16 lsinmips16 lsinhelper main]]
pass_if_eq "$func" lsinmips16 \
"stepping from \"sinblah16\" back to \"lsinmips16\" (indirectly) ($id)"
incr id
set func [step_through $id [list lsinmips16 lsinhelper main]]
pass_if_eq "$func" lsinhelper \
"stepping from \"lsinmips16\" back to \"lsinhelper\" ($id)"
# 40
incr id
set func [step_through $id [list lsinhelper main]]
pass_if_eq "$func" main "stepping from \"lsinhelper\" back to \"main\" ($id)"