diff options
| -rwxr-xr-x | configure | 3 | ||||
| -rw-r--r-- | linux-user/main.c | 21 |
2 files changed, 23 insertions, 1 deletions
@@ -2364,9 +2364,10 @@ if test "$target_softmmu" = "yes" ; then fi if test "$target_user_only" = "yes" -a "$static" = "no" -a \ - "$user_pie" = "yes" ; then + "$user_pie" = "yes" ; then cflags="-fpie $cflags" ldflags="-pie $ldflags" + echo "CONFIG_USER_PIE=y" >> $config_mak fi if test "$target_softmmu" = "yes" -a \( \ diff --git a/linux-user/main.c b/linux-user/main.c index 81a1ada50b..f3455c5a3e 100644 --- a/linux-user/main.c +++ b/linux-user/main.c @@ -48,6 +48,27 @@ int have_guest_base; static const char *interp_prefix = CONFIG_QEMU_PREFIX; const char *qemu_uname_release = CONFIG_UNAME_RELEASE; +/* for recent libc, we add these dummy symbols which are not declared + when generating a linked object (bug in ld ?) */ +#if ((__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 3)) && \ + !defined(CONFIG_STATIC)) && !defined(CONFIG_USER_PIE) +asm(".globl __preinit_array_start\n" + ".globl __preinit_array_end\n" + ".globl __init_array_start\n" + ".globl __init_array_end\n" + ".globl __fini_array_start\n" + ".globl __fini_array_end\n" + ".section \".rodata\"\n" + "__preinit_array_start:\n" + "__preinit_array_end:\n" + "__init_array_start:\n" + "__init_array_end:\n" + "__fini_array_start:\n" + "__fini_array_end:\n" + ".long 0\n" + ".previous\n"); +#endif + /* XXX: on x86 MAP_GROWSDOWN only works if ESP <= address + 32, so we allocate a bigger stack. Need a better solution, for example by remapping the process stack directly at the right place */ |