Re: -fipa-cp-clone and valgrind

[Ryan Hill <dirtyepic at gentoo dot org>]

On Tue, 3 Mar 2009 15:53:09 -0600
Ryan Hill <dirtyepic@gentoo.org> wrote:

> The code in question is:
> 
>   48 #if defined(VGP_x86_linux)
>   49 #  define GET_REAL_PC_SP_AND_FP(pc, sp, fp)      \
>   50       asm("call m_libcassert_get_ip;" \
>   51           "m_libcassert_get_ip: popl %0;" \
>   52           "movl %%esp, %1;" \
>   53           "movl %%ebp, %2;" \
>   54           : "=r" (pc),\
>   55             "=r" (sp),\
>   56             "=r" (fp));

whoops, also:

 128 __attribute__ ((noreturn))
 129 static void report_and_quit ( const Char* report,
 130                               Addr ip, Addr sp, Addr fp, Addr lr )
 131 {
 132    Addr stacktop;
 133    Addr ips[BACKTRACE_DEPTH];
 134    ThreadState *tst
 135       = VG_(get_ThreadState)( VG_(lwpid_to_vgtid)( VG_(gettid)() ) );
 136
 137    // If necessary, fake up an ExeContext which is of our actual real CPU
 138    // state.  Could cause problems if we got the panic/exception within the
 139    // execontext/stack dump/symtab code.  But it's better than nothing.
 140    if (0 == ip && 0 == sp && 0 == fp) {
 141        GET_REAL_PC_SP_AND_FP(ip, sp, fp);
 142    }


-- 
gcc-porting,                                      by design, by neglect
treecleaner,                              for a fact or just for effect
wxwidgets @ gentoo     EFFD 380E 047A 4B51 D2BD C64F 8AA8 8346 F9A4 0662

Attachment: signature.asc
Description: PGP signature