# Basic expect script for LD Regression Tests
#   Copyright (C) 1993-2023 Free Software Foundation, Inc.
#
# This file is part of the GNU Binutils.
#
# This file 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, write to the Free Software
# Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
# MA 02110-1301, USA.
#
# Written by Jeffrey Wheat (cassidy@cygnus.com)
#

if ![info exists ld] then {
    set ld [findfile $base_dir/ld-new $base_dir/ld-new [transform ld]]
}

if ![info exists as] then {
    set as [findfile $base_dir/../gas/as-new $base_dir/../gas/as-new [transform as]]
}

if ![info exists nm] then {
    set nm [findfile $base_dir/../binutils/nm-new $base_dir/../binutils/nm-new [transform nm]]
}

if ![info exists objdump] then {
    set objdump [findfile $base_dir/../binutils/objdump]
}

if ![info exists objcopy] then {
    set objcopy [findfile $base_dir/../binutils/objcopy]
}

if ![info exists ar] then {
    set ar [findfile $base_dir/../binutils/ar]
}

if ![info exists strip] then {
    set strip [findfile $base_dir/../binutils/strip-new $base_dir/../binutils/strip-new [transform strip]]
}

if ![info exists size] then {
    set size [findfile $base_dir/../binutils/size]
}

remote_exec host "mkdir -p tmpdir"

# Make symlinks from tmpdir/ld to the linker and assembler in the
# build tree, so that we can use a -B option to gcc to force it to use
# the newly built linker and assembler.
# The variable ld_testsuite_bindir allows to provide another directory
# for -B option. This can be useful when launching the testsuite outside
# the build tree as the symlinks will be wrong in this case.
if {[info exists ld_testsuite_bindir]} {
    set gcc_B_opt "-B$ld_testsuite_bindir/"
} else {
    if {![file isdirectory tmpdir/ld]} then {
	catch "exec mkdir tmpdir/ld" status
	catch "exec ln -s ../../ld-new tmpdir/ld/ld" status
	catch "exec ln -s ld tmpdir/ld/collect-ld" status
	catch "exec ln -s ../../../gas/as-new tmpdir/ld/as" status
    }
    set gcc_B_opt "-B[pwd]/tmpdir/ld/"
}

# load the linker path
set ld_L_opt ""
if {[file exists tmpdir/libpath.exp]} {
    load_lib tmpdir/libpath.exp

    foreach dir $libpath {
	append ld_L_opt " -L$dir"
    }
}

if {![info exists CC]} {
    set CC gcc
}
if {![info exists CFLAGS]} {
    set CFLAGS "-g -O2"
}
if {![info exists CC_FOR_TARGET]} {
    set CC_FOR_TARGET [find_gcc]
}
if {![info exists CFLAGS_FOR_TARGET]} {
    set CFLAGS_FOR_TARGET "-g -O2"
}
if {![info exists CXX_FOR_TARGET]} {
    set CXX_FOR_TARGET [find_g++]
}
if {![info exists CXXFLAGS_FOR_TARGET]} {
    set CXXFLAGS_FOR_TARGET ""
}

# This allows us to run the linker testsuite with clang as the compilation
# driver instead of gcc.  The syntax of the overrides are as follows, one
# per line:
#
#  '#': Silence information about the changes to the command line arguments.
#
#  '^': Add FOO as a new argument at the beginning of the command line.
#
#  '+': Add FOO as a new argument at the end of the command line.
#
#  's/XXX/YYY/': Substitute the regular expression XXX with YYY in the command
#  line.
#
#  'xOPTION': Removes all instances of the literal argument OPTION.
#
#  'XOPTION': Removes all instances of the literal argument OPTION,
#  and the following argument.
#
#  'Ox': Removes all flags matching 'O' or 'O[sz0-9]' and adds 'Ox'
#  at the end of the command line.
#
# \param OS - The stream to write edit information to.
# \param Args - The vector of command line arguments.
# \param Edit - The override command to perform.
# \param SavedStrings - Set to use for storing string representations.

# Only set up the environment variable if the user has not already provided one.
if {! [info exists env(CCC_OVERRIDE_OPTIONS)]} {
    set env(CCC_OVERRIDE_OPTIONS) "#\
  +-Wno-unused-command-line-argument \
  +-Wno-unknown-attributes \
  +-Wno-tautological-compare \
  +-Wno-ignored-optimization-argument \
  +-Wno-deprecated \
  +-fuse-ld=$ld \
  x-Wa,--elf-stt-common=yes \
  x-Wa,-mx86-used-note=no \
  x-Wa,-mx86-used-note=yes \
  x-Wa,-madd-bnd-prefix \
  x-fno-early-inlining \
  x-fno-toplevel-reorder \
  x-flto-partition=none \
  x-feliminate-dwarf2-dups \
  s/-Wa,-mrelax-relocations=yes,-mx86-used-note=yes/-Wa,-mrelax-relocations=yes/ \
  s/-Wa,--compress-debug-sections=zlib/-Wa,-compress-debug-sections=zlib/ \
  s/-Wa,--compress-debug-sections=zlib-gabi/-Wa,-compress-debug-sections=zlib-gabi/ \
"
}

# The mips64-*-linux-gnu compiler defaults to the N32 ABI after
# installed, but to the O32 ABI in the build tree, because of some
# specs-file hacks.  Make sure we use an ABI that is compatible with
# the one we expect.
if {[istarget mips64*-*-linux*] &&
    (![board_info [target_info name] exists multilib_flags] ||
     ![string match "*-mabi" [board_info [target_info name] multilib_flags]])
   } {
    append gcc_B_opt " -mabi=n32"
}

if { [istarget rx-*-*] } {
    global ASFLAGS
    set ASFLAGS "-muse-conventional-section-names"
}

# Blackfin ELF targets require selection of an explicit CPU.  Use the sim.
if {[istarget bfin*-elf*]} {
    append gcc_B_opt " -msim"
}

# load the utility procedures
load_lib ld-lib.exp

proc get_target_emul {} {
    global target_triplet
    global srcdir
    set status [catch "exec sh -c \"targ='$target_triplet' && . $srcdir/../configure.tgt && echo \\\$targ_emul\"" result]
    if $status { error "Error getting emulation name: $result" }
    return $result
}

if ![info exists HOSTING_EMU] { set HOSTING_EMU "-m [get_target_emul]" }

#
# ld_version -- extract and print the version number of ld compiler (GCC)
#
proc ld_version {} {
    global ld
    default_ld_version $ld
}

#
# ld_exit -- just a stub for ld
#
proc ld_exit {} {
}

#
# ld_start 
#	relink the linker
#
proc ld_start { ld target } {
	#
}

#
# ld_relocate 
#	link an object using relocation
#
proc ld_relocate { ld target objects } {
	default_ld_relocate $ld $target $objects
}

#
# ld_link 
#	link a program using ld
#
proc ld_link { ld target objects } {
	default_ld_link $ld $target $objects
}

#
# ld_compile 
#	compile an object using $cc
#
proc ld_compile { cc source object } {
	default_ld_compile $cc $source $object 
}

#
# ld_assemble
#	assemble a file
#
proc ld_assemble { as source object } {
	default_ld_assemble $as "" $source $object 
}

#
# ld_assemble_flags
#	assemble a file with extra flags
#
proc ld_assemble_flags { as flags source object } {
	default_ld_assemble $as $flags $source $object 
}

#
# ld_nm
#	run nm on a file
#
proc ld_nm { nm nmflags object } {
	default_ld_nm $nm $nmflags $object
}

#
# ld_exec
#	execute ithe target
#
proc ld_exec { target output } {
	default_ld_exec $target $output
}

# From gas-defs.exp, to support run_dump_test.
if ![info exists AS] then {
    set AS $as
}

if ![info exists ASFLAGS] then {
    set ASFLAGS ""
}

if ![info exists OBJDUMP] then {
    set OBJDUMP $objdump
}

if ![info exists OBJDUMPFLAGS] then {
    set OBJDUMPFLAGS {}
}

if ![info exists NM] then {
    set NM $nm
}

if ![info exists NMFLAGS] then {
    set NMFLAGS {}
}

if ![info exists OBJCOPY] then {
    set OBJCOPY $objcopy
}

if ![info exists OBJCOPYFLAGS] then {
    set OBJCOPYFLAGS {}
}

if ![info exists RANLIB] then {
    set RANLIB [findfile $base_dir/../binutils/ranlib]
}

if ![info exists READELF] then {
    set READELF [findfile $base_dir/../binutils/readelf]
}

if ![info exists READELFFLAGS] then {
    set READELFFLAGS {}
}

if ![info exists SIZE] then {
    set SIZE [findfile $base_dir/../binutils/size]
}

if ![info exists SIZEFLAGS] then {
    set SIZEFLAGS ""
}

if ![info exists ELFEDIT] then {
    set ELFEDIT [findfile $base_dir/../binutils/elfedit]
}

if ![info exists LD] then {
    set LD [findfile $base_dir/ld-new ./ld-new [transform ld]]
}

if ![info exists LDFLAGS] then {
    set LDFLAGS {}
}

if { ![info exists DT_RELR_LDFLAGS] } then {
    if { [supports_dt_relr] } then {
	set DT_RELR_LDFLAGS "-z pack-relative-relocs"
    } else {
	set DT_RELR_LDFLAGS {}
    }
}

if { ![info exists DT_RELR_CC_LDFLAGS] } then {
    if { [supports_dt_relr] } then {
	set DT_RELR_CC_LDFLAGS "-Wl,-z,pack-relative-relocs"
    } else {
	set DT_RELR_CC_LDFLAGS {}
    }
}

if { ![info exists NO_DT_RELR_LDFLAGS] } then {
    if { [supports_dt_relr] } then {
	set NO_DT_RELR_LDFLAGS "-z nopack-relative-relocs"
    } else {
	set NO_DT_RELR_LDFLAGS {}
    }
}

if { ![info exists NO_DT_RELR_CC_LDFLAGS] } then {
    if { [supports_dt_relr] } then {
	set NO_DT_RELR_CC_LDFLAGS "-Wl,-z,nopack-relative-relocs"
    } else {
	set NO_DT_RELR_CC_LDFLAGS {}
    }
}

# Set LD_CLASS to "64bit" for a 64-bit *host* linker.
if { ![info exists LD_CLASS] } then {
    set REAL_LD [findfile $base_dir/.libs/ld-new .libs/ld-new $LD [transform ld]]
    set readelf_output [run_host_cmd "$READELF" "-h $REAL_LD"]
    if { [regexp {[ \t]+Class:[ \t]+ELF64} $readelf_output] } then {
	set LD_CLASS "64bit"
    } else {
	set LD_CLASS "32bit"
    }
}

# Compiler tests
proc compiler_supports { flag args } {
    if { [check_compiler_available] } {
	global CC_FOR_TARGET
	set flags ""
	if [board_info [target_info name] exists cflags] {
	    append flags " [board_info [target_info name] cflags]"
	}
	if [board_info [target_info name] exists ldflags] {
	    append flags " [board_info [target_info name] ldflags]"
	}
	set fn "cs[pid].c"
	set f [open $fn "w"]
	if { [llength $args] > 0 } {
	    puts $f [lindex $args 0]
	} else {
	    puts $f "int main (void) { return 0; }"
	}
	close $f
	set rfn [remote_download host $fn]
	set avail [run_host_cmd_yesno "$CC_FOR_TARGET" "$flags $flag $rfn -o /dev/null"]
	remote_file host delete $rfn
	file delete $fn
	return $avail
    }
    return 0
}

if { ![info exists PLT_CFLAGS] } then {
    set PLT_CFLAGS ""
    if [compiler_supports "-c -fplt"] {
	set PLT_CFLAGS "-fplt"
    }
}

if { ![info exists NOPIE_CFLAGS] || ![info exists NOPIE_LDFLAGS] } then {
    set NOPIE_CFLAGS ""
    set NOPIE_LDFLAGS ""
    if [compiler_supports "-fno-PIE -no-pie"] {
	set NOPIE_CFLAGS "-fno-PIE"
	set NOPIE_LDFLAGS "-no-pie"
    }
}

if { ![info exists NOCF_PROTECTION_CFLAGS] } then {
    set NOCF_PROTECTION_CFLAGS ""
    if [compiler_supports "-fcf-protection=none"] {
	set NOCF_PROTECTION_CFLAGS "-fcf-protection=none"
    }
}

if { ![info exists GNU2_CFLAGS] } then {
    set GNU2_CFLAGS ""
    if [compiler_supports "-c -mtls-dialect=gnu2" "__thread int y = 1;"] {
	set GNU2_CFLAGS "-mtls-dialect=gnu2"
    }
}

if { ![info exists INT128_CFLAGS] } then {
    set INT128_CFLAGS ""
    if [compiler_supports "-c" "__int128 a = 42;"] {
	set INT128_CFLAGS "-DHAS_INT128"
    }
}

if { ![info exists STATIC_LDFLAGS] } then {
    set STATIC_LDFLAGS ""
    if [compiler_supports "-static"] {
	set STATIC_LDFLAGS "-static"
    }
}

if { ![info exists STATIC_PIE_LDFLAGS] } then {
    set STATIC_PIE_LDFLAGS ""
    if [compiler_supports "-static-pie"] {
	set STATIC_PIE_LDFLAGS "-static-pie"
    }
}

if { ![info exists NOSANITIZE_CFLAGS] } then {
    set NOSANITIZE_CFLAGS ""
    if [compiler_supports "-fno-sanitize=all"] {
	set NOSANITIZE_CFLAGS "-fno-sanitize=all"
    }
}

if { ![info exists NOLTO_CFLAGS] } then {
    set NOLTO_CFLAGS ""
    if [compiler_supports "-fno-lto"] {
	set NOLTO_CFLAGS "-fno-lto"
    }
}

# Provide dummy libraries that alpha-vms-ld always loads
if { [istarget alpha*-*-*vms*] } {
    set src tmpdir/empty.s
    set f [open $src "w"]
    close $f
    if { [ld_assemble $as $src tmpdir/empty.o]
	 && ![ld_link $LD tmpdir/empty tmpdir/empty.o]
	 && [regsub -all {[^\n]*: cannot find -l([^\n]*)} $exec_output {tmpdir/lib\1.a } missing_libs] } {
	regsub -all {\$} $missing_libs {\\\$} missing_libs
	for { set i 0 } { $i < [llength $missing_libs] } { incr i } {
	    set f [lindex $missing_libs $i]
	    verbose -log "creating dummy $f"
	    ar_simple_create $ar {} $f tmpdir/empty.o
	}
	append LDFLAGS " -Ltmpdir"
	unset i missing_libs
    }
    unset f src
}

set plug_opt ""
if { [check_compiler_available] } {
    set plugin_names {
	liblto_plugin.so
	liblto_plugin-0.dll
	cyglto_plugin-0.dll
    }
    foreach plug $plugin_names {
	set plug_so [run_host_cmd $CC_FOR_TARGET "--print-prog-name $plug"]
	if { $plug_so eq $plug } then {
	    set plug_so [run_host_cmd $CC_FOR_TARGET "--print-file-name $plug"]
	}
	if { $plug_so ne $plug } then {
	    set plug_opt "--plugin $plug_so"
	    break
	}
    }
}

if {[file exists .libs/libdep.so]} {
  set dep_plug_opt "--plugin .libs/libdep.so"
} elseif {[file exists .libs/libdep.dll]} {
  set dep_plug_opt "--plugin .libs/libdep.dll"
} else {
    set dep_plug_opt ""
}