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Allow building x32 DSO from x86-64 object file. 

bfd/

2011-06-08  H.J. Lu  <hongjiu.lu@intel.com>

	* elf64-x86-64.c (elf_x86_64_check_relocs): Allow R_X86_64_64
	relocations in SEC_DEBUGGING sections when building shared
	libraries.

ld/testsuite/

2011-06-08  H.J. Lu  <hongjiu.lu@intel.com>

	* ld-x86-64/simple.c: New.
	* ld-x86-64/x86-64-x32.rd: Likewise.

	* ld-x86-64/x86-64.exp: Check building x32 DSO from x86-64
	object file.
This commit is contained in:
H.J. Lu 2011-06-09 05:51:11 +00:00
parent 2400775011
commit adc7571d31
6 changed files with 54 additions and 0 deletions
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6
bfd/ChangeLog
View File

@ -1,3 +1,9 @@
2011-06-08 H.J. Lu <hongjiu.lu@intel.com>
* elf64-x86-64.c (elf_x86_64_check_relocs): Allow R_X86_64_64
relocations in SEC_DEBUGGING sections when building shared
libraries.
2011-06-08 H.J. Lu <hongjiu.lu@intel.com>
PR ld/12851

7
bfd/elf64-x86-64.c
View File

@ -1217,6 +1217,13 @@ elf_x86_64_check_relocs (bfd *abfd, struct bfd_link_info *info,
break;
case R_X86_64_64:
/* Allow R_X86_64_64 relocations in SEC_DEBUGGING sections
when building shared libraries. */
if (info->shared
&& !info->executable
&& (sec->flags & SEC_DEBUGGING) != 0)
break;
case R_X86_64_DTPOFF64:
case R_X86_64_TPOFF64:
case R_X86_64_PC64:

8
ld/testsuite/ChangeLog
View File

@ -1,3 +1,11 @@
2011-06-08 H.J. Lu <hongjiu.lu@intel.com>
* ld-x86-64/simple.c: New.
* ld-x86-64/x86-64-x32.rd: Likewise.
* ld-x86-64/x86-64.exp: Check building x32 DSO from x86-64
object file.
2011-06-08 H.J. Lu <hongjiu.lu@intel.com>
PR ld/12851

5
ld/testsuite/ld-x86-64/simple.c Normal file
View File

@ -0,0 +1,5 @@
int
foo (int x)
{
return x * 4;
}

5
ld/testsuite/ld-x86-64/x86-64-x32.rd Normal file
View File

@ -0,0 +1,5 @@
Symbol table '\.dynsym' contains [0-9]+ entries:
+Num: +Value +Size Type +Bind +Vis +Ndx Name
#...
+[0-9]+: +[0-9a-f]+ +[0-9a-f]+ +FUNC +GLOBAL +DEFAULT +[0-9]+ +foo
#...

23
ld/testsuite/ld-x86-64/x86-64.exp
View File

@ -203,3 +203,26 @@ run_dump_test "ia32-3"
run_dump_test "lp64-1"
run_dump_test "lp64-2"
run_dump_test "lp64-3"
# Need the C compiler
if { [which $CC] != 0 } {
run_cc_link_tests {
{"Helper X32 DSO from x86-64 object" "" "-m64 -fPIC -g"
{simple.c} {} "libsimple.a"}
}
set convertx32 "$objcopy -O elf32-x86-64 tmpdir/simple.o tmpdir/simple-x32.o"
send_log "$convertx32\n"
set got [remote_exec host "$convertx32"]
if { [lindex $got 0] != 0 || ![string match "" [lindex $got 1]] } then {
send_log "$got\n"
fail "Convert x86-64 object to x32"
return
}
run_ld_link_tests {
{"X32 DSO from x86-64 object"
"-shared -melf32_x86_64 tmpdir/simple-x32.o" "--x32"
{dummy.s} {{readelf {-s --wide} x86-64-x32.rd}} "x86-64-x32"}
}
}