diff options
Diffstat (limited to 'ld/testsuite/lib/ld-lib.exp')
| -rw-r--r-- | ld/testsuite/lib/ld-lib.exp | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/ld/testsuite/lib/ld-lib.exp b/ld/testsuite/lib/ld-lib.exp index 6904499..364c6fa 100644 --- a/ld/testsuite/lib/ld-lib.exp +++ b/ld/testsuite/lib/ld-lib.exp @@ -1960,6 +1960,51 @@ proc check_ifunc_available { } { return $ifunc_available_saved } +# Returns true if ifunc attribute works. + +proc check_ifunc_attribute_available { } { + global ifunc_attribute_available_saved + global CC + + if {![info exists ifunc_attribute_available_saved]} { + if { [which $CC] == 0 } { + set ifunc_attribute_available_saved 0 + return 0 + } + # Check if gcc supports -flto -fuse-linker-plugin + 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 basename "tmpdir/ifunc[pid]" + set src ${basename}.c + set output ${basename}.out + set f [open $src "w"] + puts $f "extern int library_func2 (void) __attribute__ ((ifunc (\"foo\")));" + puts $f "int main (void)" + puts $f "{" + puts $f " if (library_func2 () != 2) __builtin_abort ();" + puts $f " return 0; " + puts $f "}" + puts $f "static int library_func1 (void) {return 2; }" + puts $f "void *foo (void) { return library_func1; }" + close $f + remote_download host $src + set ifunc_attribute_available_saved [run_host_cmd_yesno "$CC" "$flags $src -o $output"] + if { $ifunc_attribute_available_saved == 1 } { + set ifunc_attribute_available_saved [run_host_cmd_yesno "$output" ""] + } + remote_file host delete $src + remote_file host delete $output + file delete $src + } + return $ifunc_attribute_available_saved +} + # Provide virtual target "cfi" for targets supporting CFI. rename "istarget" "istarget_ld" |