diff options
Diffstat (limited to 'gcc-4.9/gcc/testsuite/lib/target-supports.exp')
| -rw-r--r-- | gcc-4.9/gcc/testsuite/lib/target-supports.exp | 64 |
1 files changed, 64 insertions, 0 deletions
diff --git a/gcc-4.9/gcc/testsuite/lib/target-supports.exp b/gcc-4.9/gcc/testsuite/lib/target-supports.exp index 36a0b6c1b..8995fb0b3 100644 --- a/gcc-4.9/gcc/testsuite/lib/target-supports.exp +++ b/gcc-4.9/gcc/testsuite/lib/target-supports.exp @@ -869,6 +869,19 @@ proc check_effective_target_fpic { } { return 0 } +# Return 1 if -shared is supported, as in no warnings or errors +# emitted, 0 otherwise. + +proc check_effective_target_shared { } { + # Note that M68K has a multilib that supports -fpic but not + # -fPIC, so we need to check both. We test with a program that + # requires GOT references. + return [check_no_compiler_messages shared executable { + extern int foo (void); extern int bar; + int baz (void) { return foo () + bar; } + } "-shared -fpic"] +} + # Return 1 if -pie, -fpie and -fPIE are supported, 0 otherwise. proc check_effective_target_pie { } { @@ -5993,3 +6006,54 @@ proc force_conventional_output_for { test } { } } +# Return 1 if the x86-64 target supports PIE with copy reloc, 0 +# otherwise. Cache the result. + +proc check_effective_target_pie_copyreloc { } { + global pie_copyreloc_available_saved + global tool + global GCC_UNDER_TEST + + if { !([istarget x86_64-*-*] || [istarget i?86-*-*]) } { + return 0 + } + + # Need auto-host.h to check linker support. + if { ![file exists ../../auto-host.h ] } { + return 0 + } + + if [info exists pie_copyreloc_available_saved] { + verbose "check_effective_target_pie_copyreloc returning saved $pie_copyreloc_available_saved" 2 + } else { + # Set up and compile to see if linker supports PIE with copy + # reloc. Include the current process ID in the file names to + # prevent conflicts with invocations for multiple testsuites. + + set src pie[pid].c + set obj pie[pid].o + + set f [open $src "w"] + puts $f "#include \"../../auto-host.h\"" + puts $f "#if HAVE_LD_PIE_COPYRELOC == 0" + puts $f "# error Linker does not support PIE with copy reloc." + puts $f "#endif" + close $f + + verbose "check_effective_target_pie_copyreloc compiling testfile $src" 2 + set lines [${tool}_target_compile $src $obj object ""] + + file delete $src + file delete $obj + + if [string match "" $lines] then { + verbose "check_effective_target_pie_copyreloc testfile compilation passed" 2 + set pie_copyreloc_available_saved 1 + } else { + verbose "check_effective_target_pie_copyreloc testfile compilation failed" 2 + set pie_copyreloc_available_saved 0 + } + } + + return $pie_copyreloc_available_saved +} |