ld/testsuite/ld-elf/sec-to-seg.exp

# Test the assigment of sections to segments.
#
# Copyright (C) 2008-2021 Free Software Foundation, Inc.
# Contributed by Red Hat.
#
# This file is part of the GNU Binutils.
#
# 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, write to the Free Software
# Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
# MA 02110-1301, USA.

set testname "assignment of ELF sections to segments"

if {! [is_elf_format] } {
    unsupported $testname
    return
}

if {   ! [ld_assemble $as $srcdir/$subdir/sec-to-seg1.s tmpdir/sec-to-seg1.o]
    || ! [ld_assemble $as $srcdir/$subdir/sec-to-seg2.s tmpdir/sec-to-seg2.o]} then {
    unsupported $testname
    return
}

proc sec_to_seg_test { testname scriptname same_seg } {
    global srcdir
    global subdir
    global ld
    global exec_output
    global READELF
    
    if {! [ld_link $ld tmpdir/sec-to-seg "-T $srcdir/$subdir/$scriptname tmpdir/sec-to-seg1.o tmpdir/sec-to-seg2.o"] } then {
	fail $testname
	return 0
    }

    send_log "$READELF --program-headers --section-headers tmpdir/sec-to-seg\n"
    set exec_output [run_host_cmd "$READELF" "--program-headers --section-headers tmpdir/sec-to-seg"]

    if { $same_seg == 1 } {
      if {! [regexp ".*.sec1 .sec2" $exec_output] } {
	  fail $testname
	  return 0
      }
    } else {
      if {  [regexp ".*.sec1 .sec2" $exec_output] } {
	  fail $testname
	  return 0
      }
    }

    pass $testname
    return 1
}

# Assuming a pagesize of 0x1000 then:
#
# Test  Sec1 End  Sec 2 Start    Expected Result
# ----  --------  -----------    ---------------
#  A    00001042   00001043      Both sections on same page: assign to same segment.
#  B    00001042   00002044      Sections on adjacent pages: assign to same segment.
#  C    00001042   00003044      Sections on disjoint pages: assign to separate segments.

# These targets have a pagesize of 1, so they will always end up
# placing the two sections in separate segments in the B test.
if {    [istarget avr-*-*]
     || [istarget cr16-*-*]
     || [istarget crx-*-*]
     || [istarget dlx-*-*]
     || [istarget ft32-*-*]
     || [istarget h8300-*-*]
     || [istarget ip2k-*-*]
     || [istarget m32r-*-*]
     || [istarget moxie-*-*]
     || [istarget msp430-*-*]
     || [istarget mt-*-*]
     || [istarget pru-*-*]
     || [istarget visium-*-*]
    } {
    set B_test_same_seg 0
} else {
    set B_test_same_seg 1
}

sec_to_seg_test "assignment of ELF sections to segments (same page)"      "sec-to-seg-script-same-page.t" 1
sec_to_seg_test "assignment of ELF sections to segments (adjacent pages)" "sec-to-seg-script-adjoining-pages.t" $B_test_same_seg
sec_to_seg_test "assignment of ELF sections to segments (disjoint pages)" "sec-to-seg-script-disjoint-pages.t" 0


# FIXME: Add more tests to check other rules of section to segment assignment.