pool/libsigsegv
SHA256
4
0
Fork 1
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Fat LTO objects

Browse Source 
OBS-URL: https://build.opensuse.org/package/show/devel:libraries:c_c++/libsigsegv?expand=0&rev=21
This commit is contained in:
Dr. Werner Fink 2019-04-26 11:20:58 +00:00 committed by Git OBS Bridge
parent 3bd6c62933
commit f004738409
3 changed files with 56 additions and 174 deletions

211
libsigsegv-2.12-lto.dif

@ -1,24 +1,19 @@
---
configure | 42 +++++++++++++++++++++++++++---------------
1 file changed, 27 insertions(+), 15 deletions(-)
--- configure
+++ configure 2019-04-25 11:02:56.690127942 +0000
+++ configure 2019-04-25 13:27:06.323370748 +0000
@@ -12587,7 +12587,7 @@ static int zero_fd;
# define SIGSEGV_FAULT_ADDRESS_ROUNDOFF_BITS 0UL
#endif
unsigned long page;
-int handler_called = 0;
+sig_atomic_t handler_called;
+volatile sig_atomic_t handler_called = 0;
void sigsegv_handler (int sig, siginfo_t *sip, void *ucp)
{
void *fault_address = (void *) (sip->si_addr);
@@ -12642,6 +12642,8 @@ action.sa_sigaction = &sigsegv_handler;
crasher (page);
/* The second write access should not invoke the handler. */
crasher (page);
+ /* LTO may move resulting assembler code around */
+ __asm__ __volatile__("": : :"memory");
/* Check that the handler was called only once. */
if (handler_called != 1)
exit (1);
@@ -12683,7 +12685,9 @@ else
@@ -12683,7 +12683,9 @@ else
#include <signal.h>
@ -28,7 +23,7 @@
void sigsegv_handler (int sig, struct sigcontext sc)
{
void *fault_address = (void *) (sc.cr2);
@@ -12718,7 +12722,9 @@ else
@@ -12718,7 +12720,9 @@ else
#if HAVE_SYS_SIGNAL_H
# include <sys/signal.h>
#endif
@ -38,43 +33,25 @@
#include <sys/types.h>
#include <sys/mman.h>
#if HAVE_MMAP_DEVZERO
@@ -12750,7 +12756,7 @@ static int zero_fd;
@@ -12750,7 +12754,7 @@ static int zero_fd;
# define SIGSEGV_FAULT_ADDRESS_ROUNDOFF_BITS 0UL
#endif
unsigned long page;
-int handler_called = 0;
+sig_atomic_t handler_called = 0;
+volatile sig_atomic_t handler_called = 0;
void sigsegv_handler (int sig, struct sigcontext sc)
{
void *fault_address = (void *) (sc.cr2);
@@ -12807,6 +12813,8 @@ int main ()
crasher (page);
/* The second write access should not invoke the handler. */
crasher (page);
+ /* LTO may move resulting assembler code around */
+ __asm__ __volatile__("": : :"memory");
/* Check that the handler was called only once. */
if (handler_called != 1)
exit (1);
@@ -12915,7 +12923,7 @@ static int zero_fd;
@@ -12915,7 +12919,7 @@ static int zero_fd;
# define SIGSEGV_FAULT_ADDRESS_ROUNDOFF_BITS 0UL
#endif
unsigned long page;
-int handler_called = 0;
+sig_atomic_t handler_called = 0;
+volatile sig_atomic_t handler_called = 0;
void sigsegv_handler (int sig, unsigned int more)
{
void *fault_address = (void *) (((unsigned long *) &more) [21]);
@@ -12972,6 +12980,8 @@ int main ()
crasher (page);
/* The second write access should not invoke the handler. */
crasher (page);
+ /* LTO may move resulting assembler code around */
+ __asm__ __volatile__("": : :"memory");
/* Check that the handler was called only once. */
if (handler_called != 1)
exit (1);
@@ -13013,7 +13023,9 @@ else
@@ -13013,7 +13017,9 @@ else
#include <signal.h>
@ -84,7 +61,7 @@
#include "$srcdir/src/fault-linux-m68k-old.c"
void sigsegv_handler (int sig, int code, struct sigcontext *scp)
{
@@ -13049,7 +13061,9 @@ else
@@ -13049,7 +13055,9 @@ else
#if HAVE_SYS_SIGNAL_H
# include <sys/signal.h>
#endif
@ -94,25 +71,16 @@
#include "$srcdir/src/fault-linux-m68k-old.c"
#include <sys/types.h>
#include <sys/mman.h>
@@ -13082,7 +13096,7 @@ static int zero_fd;
@@ -13082,7 +13090,7 @@ static int zero_fd;
# define SIGSEGV_FAULT_ADDRESS_ROUNDOFF_BITS 0UL
#endif
unsigned long page;
-int handler_called = 0;
+sig_atomic_t handler_called = 0;
+volatile sig_atomic_t handler_called = 0;
void sigsegv_handler (int sig, int code, struct sigcontext *scp)
{
void *fault_address = (void *) (get_fault_addr (scp));
@@ -13139,6 +13153,8 @@ int main ()
crasher (page);
/* The second write access should not invoke the handler. */
crasher (page);
+ /* LTO may move resulting assembler code around */
+ __asm__ __volatile__("": : :"memory");
/* Check that the handler was called only once. */
if (handler_called != 1)
exit (1);
@@ -13180,7 +13196,9 @@ else
@@ -13180,7 +13188,9 @@ else
#include <signal.h>
@ -122,7 +90,7 @@
void sigsegv_handler (int sig, struct sigcontext *scp)
{
void *fault_address = (void *) (scp->regs->dar);
@@ -13215,7 +13233,9 @@ else
@@ -13215,7 +13225,9 @@ else
#if HAVE_SYS_SIGNAL_H
# include <sys/signal.h>
#endif
@ -132,201 +100,102 @@
#include <sys/types.h>
#include <sys/mman.h>
#if HAVE_MMAP_DEVZERO
@@ -13247,7 +13267,7 @@ static int zero_fd;
@@ -13247,7 +13259,7 @@ static int zero_fd;
# define SIGSEGV_FAULT_ADDRESS_ROUNDOFF_BITS 0UL
#endif
unsigned long page;
-int handler_called = 0;
+sig_atomic_t handler_called = 0;
+volatile sig_atomic_t handler_called = 0;
void sigsegv_handler (int sig, struct sigcontext *scp)
{
void *fault_address = (void *) (scp->regs->dar);
@@ -13304,6 +13324,8 @@ int main ()
crasher (page);
/* The second write access should not invoke the handler. */
crasher (page);
+ /* LTO may move resulting assembler code around */
+ __asm__ __volatile__("": : :"memory");
/* Check that the handler was called only once. */
if (handler_called != 1)
exit (1);
@@ -13413,7 +13435,7 @@ static int zero_fd;
@@ -13413,7 +13425,7 @@ static int zero_fd;
# define SIGSEGV_FAULT_ADDRESS_ROUNDOFF_BITS 0UL
#endif
unsigned long page;
-int handler_called = 0;
+sig_atomic_t handler_called = 0;
+volatile sig_atomic_t handler_called = 0;
void sigsegv_handler (int sig, siginfo_t *sip, void *ucp)
{
void *fault_address = (void *) (sip->si_ptr);
@@ -13468,6 +13490,8 @@ action.sa_sigaction = &sigsegv_handler;
crasher (page);
/* The second write access should not invoke the handler. */
crasher (page);
+ /* LTO may move resulting assembler code around */
+ __asm__ __volatile__("": : :"memory");
/* Check that the handler was called only once. */
if (handler_called != 1)
exit (1);
@@ -13576,7 +13600,7 @@ static int zero_fd;
@@ -13576,7 +13588,7 @@ static int zero_fd;
# define SIGSEGV_FAULT_ADDRESS_ROUNDOFF_BITS 0UL
#endif
unsigned long page;
-int handler_called = 0;
+sig_atomic_t handler_called = 0;
+volatile sig_atomic_t handler_called = 0;
void sigsegv_handler (int sig, int code, struct sigcontext *scp, void *addr)
{
void *fault_address = (void *) (addr);
@@ -13633,6 +13657,8 @@ int main ()
crasher (page);
/* The second write access should not invoke the handler. */
crasher (page);
+ /* LTO may move resulting assembler code around */
+ __asm__ __volatile__("": : :"memory");
/* Check that the handler was called only once. */
if (handler_called != 1)
exit (1);
@@ -13741,7 +13767,7 @@ static int zero_fd;
@@ -13741,7 +13753,7 @@ static int zero_fd;
# define SIGSEGV_FAULT_ADDRESS_ROUNDOFF_BITS 0UL
#endif
unsigned long page;
-int handler_called = 0;
+sig_atomic_t handler_called = 0;
+volatile sig_atomic_t handler_called = 0;
void sigsegv_handler (int sig, int code, struct sigcontext *scp)
{
void *fault_address = (void *) ((unsigned long) scp->sc_badvaddr);
@@ -13798,6 +13824,8 @@ int main ()
crasher (page);
/* The second write access should not invoke the handler. */
crasher (page);
+ /* LTO may move resulting assembler code around */
+ __asm__ __volatile__("": : :"memory");
/* Check that the handler was called only once. */
if (handler_called != 1)
exit (1);
@@ -13916,7 +13944,7 @@ static int zero_fd;
@@ -13916,7 +13928,7 @@ static int zero_fd;
# define SIGSEGV_FAULT_ADDRESS_ROUNDOFF_BITS 0UL
#endif
unsigned long page;
-int handler_called = 0;
+sig_atomic_t handler_called = 0;
+volatile sig_atomic_t handler_called = 0;
void sigsegv_handler (int sig, int code, struct sigcontext *scp)
{
void *fault_address = (void *) (GET_CR21 (scp->sc_sl.sl_ss));
@@ -13974,6 +14002,8 @@ int main ()
/* The second write access should not invoke the handler. */
crasher (page);
/* Check that the handler was called only once. */
+ /* LTO may move resulting assembler code around */
+ __asm__ __volatile__("": : :"memory");
if (handler_called != 1)
exit (1);
/* Test passed! */
@@ -14081,7 +14111,7 @@ static int zero_fd;
@@ -14081,7 +14093,7 @@ static int zero_fd;
# define SIGSEGV_FAULT_ADDRESS_ROUNDOFF_BITS 0UL
#endif
unsigned long page;
-int handler_called = 0;
+sig_atomic_t handler_called = 0;
+volatile sig_atomic_t handler_called = 0;
void sigsegv_handler (int sig, int code, struct sigcontext *scp)
{
void *fault_address = (void *) (scp->sc_traparg_a0);
@@ -14138,6 +14168,8 @@ int main ()
crasher (page);
/* The second write access should not invoke the handler. */
crasher (page);
+ /* LTO may move resulting assembler code around */
+ __asm__ __volatile__("": : :"memory");
/* Check that the handler was called only once. */
if (handler_called != 1)
exit (1);
@@ -14246,7 +14278,7 @@ static int zero_fd;
@@ -14246,7 +14258,7 @@ static int zero_fd;
# define SIGSEGV_FAULT_ADDRESS_ROUNDOFF_BITS 0UL
#endif
unsigned long page;
-int handler_called = 0;
+sig_atomic_t handler_called = 0;
+volatile sig_atomic_t handler_called = 0;
void sigsegv_handler (int sig, int code, struct sigcontext *scp)
{
void *fault_address = (void *) (get_fault_addr (scp));
@@ -14303,6 +14335,8 @@ int main ()
crasher (page);
/* The second write access should not invoke the handler. */
crasher (page);
+ /* LTO may move resulting assembler code around */
+ __asm__ __volatile__("": : :"memory");
/* Check that the handler was called only once. */
if (handler_called != 1)
exit (1);
@@ -14411,7 +14445,7 @@ static int zero_fd;
@@ -14411,7 +14423,7 @@ static int zero_fd;
# define SIGSEGV_FAULT_ADDRESS_ROUNDOFF_BITS 0UL
#endif
unsigned long page;
-int handler_called = 0;
+sig_atomic_t handler_called = 0;
+volatile sig_atomic_t handler_called = 0;
void sigsegv_handler (int sig, int code, struct sigcontext *scp)
{
void *fault_address = (void *) (scp->sc_jmpbuf.jmp_context.o_vaddr);
@@ -14468,6 +14502,8 @@ int main ()
crasher (page);
/* The second write access should not invoke the handler. */
crasher (page);
+ /* LTO may move resulting assembler code around */
+ __asm__ __volatile__("": : :"memory");
/* Check that the handler was called only once. */
if (handler_called != 1)
exit (1);
@@ -14577,7 +14613,7 @@ static int zero_fd;
@@ -14577,7 +14589,7 @@ static int zero_fd;
# define SIGSEGV_FAULT_ADDRESS_ROUNDOFF_BITS 0UL
#endif
unsigned long page;
-int handler_called = 0;
+sig_atomic_t handler_called;
+volatile sig_atomic_t handler_called = 0;
void sigsegv_handler (int sig, siginfo_t *sip, ucontext_t *ucp)
{
void *fault_address = (void *) (get_fault_addr (sip, ucp));
@@ -14632,6 +14668,8 @@ action.sa_sigaction = &sigsegv_handler;
crasher (page);
/* The second write access should not invoke the handler. */
crasher (page);
+ /* LTO may move resulting assembler code around */
+ __asm__ __volatile__("": : :"memory");
/* Check that the handler was called only once. */
if (handler_called != 1)
exit (1);
@@ -14741,7 +14779,7 @@ static int zero_fd;
@@ -14741,7 +14753,7 @@ static int zero_fd;
# define SIGSEGV_FAULT_ADDRESS_ROUNDOFF_BITS 0UL
#endif
unsigned long page;
-int handler_called = 0;
+sig_atomic_t handler_called;
+volatile sig_atomic_t handler_called = 0;
void sigsegv_handler (int sig, int code, struct sigcontext *scp)
{
void *fault_address = (void *) (get_fault_addr (scp));
@@ -14798,6 +14836,8 @@ int main ()
crasher (page);
/* The second write access should not invoke the handler. */
crasher (page);
+ /* LTO may move resulting assembler code around */
+ __asm__ __volatile__("": : :"memory");
/* Check that the handler was called only once. */
if (handler_called != 1)
exit (1);
@@ -14907,7 +14947,7 @@ static int zero_fd;
@@ -14907,7 +14919,7 @@ static int zero_fd;
# define SIGSEGV_FAULT_ADDRESS_ROUNDOFF_BITS 0UL
#endif
unsigned long page;
-int handler_called = 0;
+sig_atomic_t handler_called;
+volatile sig_atomic_t handler_called = 0;
void sigsegv_handler (int sig, int code, struct sigcontext *scp)
{
void *fault_address = (void *) (code);
@@ -14964,6 +15004,8 @@ int main ()
crasher (page);
/* The second write access should not invoke the handler. */
crasher (page);
+ /* LTO may move resulting assembler code around */
+ __asm__ __volatile__("": : :"memory");
/* Check that the handler was called only once. */
if (handler_called != 1)
exit (1);

5
libsigsegv.changes

@ -1,3 +1,8 @@
-------------------------------------------------------------------
Fri Apr 26 11:19:16 UTC 2019 - Dr. Werner Fink <werner@suse.de>
- Allow LTO but only FAT LTO OBJECTS (boo#1133245)
-------------------------------------------------------------------
Thu Apr 25 11:18:04 UTC 2019 - Dr. Werner Fink <werner@suse.de>

14
libsigsegv.spec

@ -69,14 +69,22 @@ available.
%prep
%setup -q
%patch0
%patch0 -b .p0
%build
%define _lto_cflags %{nil}
%add_optflags -D_DEFAULT_SOURCE -D_XOPEN_SOURCE
%add_optflags -g3 -D_DEFAULT_SOURCE -D_XOPEN_SOURCE
%if 0%(case "%optflags" in (*-flto*) echo 1;; esac)
%global optflags %(echo -n "%optflags" | sed -r "s@-flto@-ffat-lto-objects@")
%endif
%configure \
--with-gnu-ld \
--enable-shared \
--enable-static
sed -ri 's@^((old_striplib|striplib)=)".*"@\1""@' libtool
sed -ri 's@^(hardcode_libdir_flag_spec=)".*"@\1""@' libtool
mkdir bin/
ln -sf /bin/true bin/strip
PATH=${PWD}/bin:$PATH; export PATH
make %{?_smp_mflags}
%install