void test_VG_IS_XYZ_ALIGNED(void)
{
CHECK( VG_IS_2_ALIGNED(0x0) );
CHECK( ! VG_IS_2_ALIGNED(0x1) );
CHECK( VG_IS_2_ALIGNED(0x2) );
CHECK( ! VG_IS_2_ALIGNED(0x3) );
CHECK( VG_IS_2_ALIGNED(0x4) );
CHECK( ! VG_IS_2_ALIGNED(0x5) );
CHECK( VG_IS_2_ALIGNED(0x6) );
CHECK( ! VG_IS_2_ALIGNED(0x7) );
CHECK( VG_IS_2_ALIGNED(0x8) );
CHECK( ! VG_IS_2_ALIGNED(0x9) );
CHECK( VG_IS_2_ALIGNED(0xa) );
CHECK( ! VG_IS_2_ALIGNED(0xb) );
CHECK( VG_IS_2_ALIGNED(0xc) );
CHECK( ! VG_IS_2_ALIGNED(0xd) );
CHECK( VG_IS_2_ALIGNED(0xe) );
CHECK( ! VG_IS_2_ALIGNED(0xf) );
CHECK( VG_IS_4_ALIGNED(0x0) );
CHECK( ! VG_IS_4_ALIGNED(0x1) );
CHECK( ! VG_IS_4_ALIGNED(0x2) );
CHECK( ! VG_IS_4_ALIGNED(0x3) );
CHECK( VG_IS_4_ALIGNED(0x4) );
CHECK( ! VG_IS_4_ALIGNED(0x5) );
CHECK( ! VG_IS_4_ALIGNED(0x6) );
CHECK( ! VG_IS_4_ALIGNED(0x7) );
CHECK( VG_IS_4_ALIGNED(0x8) );
CHECK( ! VG_IS_4_ALIGNED(0x9) );
CHECK( ! VG_IS_4_ALIGNED(0xa) );
CHECK( ! VG_IS_4_ALIGNED(0xb) );
CHECK( VG_IS_4_ALIGNED(0xc) );
CHECK( ! VG_IS_4_ALIGNED(0xd) );
CHECK( ! VG_IS_4_ALIGNED(0xe) );
CHECK( ! VG_IS_4_ALIGNED(0xf) );
CHECK( VG_IS_8_ALIGNED(0x0) );
CHECK( ! VG_IS_8_ALIGNED(0x1) );
CHECK( ! VG_IS_8_ALIGNED(0x2) );
CHECK( ! VG_IS_8_ALIGNED(0x3) );
CHECK( ! VG_IS_8_ALIGNED(0x4) );
CHECK( ! VG_IS_8_ALIGNED(0x5) );
CHECK( ! VG_IS_8_ALIGNED(0x6) );
CHECK( ! VG_IS_8_ALIGNED(0x7) );
CHECK( VG_IS_8_ALIGNED(0x8) );
CHECK( ! VG_IS_8_ALIGNED(0x9) );
CHECK( ! VG_IS_8_ALIGNED(0xa) );
CHECK( ! VG_IS_8_ALIGNED(0xb) );
CHECK( ! VG_IS_8_ALIGNED(0xc) );
CHECK( ! VG_IS_8_ALIGNED(0xd) );
CHECK( ! VG_IS_8_ALIGNED(0xe) );
CHECK( ! VG_IS_8_ALIGNED(0xf) );
CHECK( VG_IS_16_ALIGNED(0x0) );
CHECK( ! VG_IS_16_ALIGNED(0x1) );
CHECK( ! VG_IS_16_ALIGNED(0x2) );
CHECK( ! VG_IS_16_ALIGNED(0x3) );
CHECK( ! VG_IS_16_ALIGNED(0x4) );
CHECK( ! VG_IS_16_ALIGNED(0x5) );
CHECK( ! VG_IS_16_ALIGNED(0x6) );
CHECK( ! VG_IS_16_ALIGNED(0x7) );
CHECK( ! VG_IS_16_ALIGNED(0x8) );
CHECK( ! VG_IS_16_ALIGNED(0x9) );
CHECK( ! VG_IS_16_ALIGNED(0xa) );
CHECK( ! VG_IS_16_ALIGNED(0xb) );
CHECK( ! VG_IS_16_ALIGNED(0xc) );
CHECK( ! VG_IS_16_ALIGNED(0xd) );
CHECK( ! VG_IS_16_ALIGNED(0xe) );
CHECK( ! VG_IS_16_ALIGNED(0xf) );
CHECK( VG_IS_WORD_ALIGNED(0x0) );
CHECK( ! VG_IS_WORD_ALIGNED(0x1) );
CHECK( ! VG_IS_WORD_ALIGNED(0x2) );
CHECK( ! VG_IS_WORD_ALIGNED(0x3) );
// 0x4 case below
CHECK( ! VG_IS_WORD_ALIGNED(0x5) );
CHECK( ! VG_IS_WORD_ALIGNED(0x6) );
CHECK( ! VG_IS_WORD_ALIGNED(0x7) );
CHECK( VG_IS_WORD_ALIGNED(0x8) );
CHECK( ! VG_IS_WORD_ALIGNED(0x9) );
CHECK( ! VG_IS_WORD_ALIGNED(0xa) );
CHECK( ! VG_IS_WORD_ALIGNED(0xb) );
// 0xc case below
CHECK( ! VG_IS_WORD_ALIGNED(0xd) );
CHECK( ! VG_IS_WORD_ALIGNED(0xe) );
CHECK( ! VG_IS_WORD_ALIGNED(0xf) );
if (4 == sizeof(void*)) {
CHECK( VG_IS_WORD_ALIGNED(0x4) );
CHECK( VG_IS_WORD_ALIGNED(0xc) );
} else if (8 == sizeof(void*)) {
CHECK( ! VG_IS_WORD_ALIGNED(0x4) );
CHECK( ! VG_IS_WORD_ALIGNED(0xc) );
} else {
assert(0);
}
CHECK( VG_IS_PAGE_ALIGNED(0x0) );
CHECK( ! VG_IS_PAGE_ALIGNED(0x1) );
CHECK( ! VG_IS_PAGE_ALIGNED(0x2) );
CHECK( ! VG_IS_PAGE_ALIGNED(0x3) );
CHECK( ! VG_IS_PAGE_ALIGNED(0x4) );
CHECK( ! VG_IS_PAGE_ALIGNED(VKI_PAGE_SIZE-1) );
CHECK( VG_IS_PAGE_ALIGNED(VKI_PAGE_SIZE ) );
CHECK( ! VG_IS_PAGE_ALIGNED(VKI_PAGE_SIZE+1) );
}
/* EXPORTED */
void VG_(sigframe_create)( ThreadId tid,
Addr sp_top_of_frame,
const vki_siginfo_t *siginfo,
const struct vki_ucontext *siguc,
void *handler,
UInt flags,
const vki_sigset_t *mask,
void *restorer )
{
Addr sp;
ThreadState* tst = VG_(get_ThreadState)(tid);
Int sigNo = siginfo->si_signo;
struct vg_sig_private *priv;
/* Stack must be 8-byte aligned */
sp_top_of_frame &= ~0xf;
if (flags & VKI_SA_SIGINFO)
{
sp = sp_top_of_frame - sizeof(struct rt_sigframe);
}
else
{
sp = sp_top_of_frame - sizeof(struct sigframe);
}
tst = VG_(get_ThreadState)(tid);
if (!extend(tst, sp, sp_top_of_frame - sp))
return;
vg_assert(VG_IS_8_ALIGNED(sp));
if (flags & VKI_SA_SIGINFO)
{
struct rt_sigframe *frame = (struct rt_sigframe *) sp;
struct vki_ucontext *ucp = &frame->rs_uc;
if (VG_(clo_trace_signals))
VG_(printf)("rt_sigframe\n");
/* Create siginfo. */
VG_TRACK( pre_mem_write, Vg_CoreSignal, tid, "signal frame siginfo",
(Addr)&frame->rs_info, sizeof(frame->rs_info) );
VG_(memcpy)(&frame->rs_info, siginfo, sizeof(*siginfo));
VG_TRACK( post_mem_write, Vg_CoreSignal, tid,
(Addr)&frame->rs_info, sizeof(frame->rs_info) );
/* Create the ucontext. */
VG_TRACK( pre_mem_write, Vg_CoreSignal, tid, "signal frame ucontext",
(Addr)ucp, offsetof(struct vki_ucontext, uc_mcontext) );
ucp->uc_flags = 0;
ucp->uc_link = 0;
ucp->uc_stack = tst->altstack;
VG_TRACK( post_mem_write, Vg_CoreSignal, tid, (Addr)ucp,
offsetof(struct vki_ucontext, uc_mcontext) );
struct vki_sigcontext *scp = &(frame->rs_uc.uc_mcontext);
setup_sigcontext2(tst, &(scp), siginfo);
ucp->uc_sigmask = tst->sig_mask;
priv = &frame->priv;
/*
* Arguments to signal handler:
*
* a0 = signal number
* a1 = 0 (should be cause)
* a2 = pointer to ucontext
*
* $25 and c0_epc point to the signal handler, $29 points to
* the struct rt_sigframe.
*/
tst->arch.vex.guest_r4 = siginfo->si_signo;
tst->arch.vex.guest_r5 = (Addr) &frame->rs_info;
tst->arch.vex.guest_r6 = (Addr) &frame->rs_uc;
tst->arch.vex.guest_r29 = (Addr) frame;
tst->arch.vex.guest_r25 = (Addr) handler;
if (flags & VKI_SA_RESTORER)
{
tst->arch.vex.guest_r31 = (Addr) restorer;
}
else
{
tst->arch.vex.guest_r31 = (Addr)&VG_(mips32_linux_SUBST_FOR_rt_sigreturn);
}
}
else
{
if (VG_(clo_trace_signals))
/* EXPORTED */
void VG_(sigframe_create)( ThreadId tid,
Addr sp_top_of_frame,
const vki_siginfo_t *siginfo,
const struct vki_ucontext *siguc,
void *handler,
UInt flags,
const vki_sigset_t *mask,
void *restorer )
{
Addr sp;
ThreadState* tst;
Addr faultaddr;
Int sigNo = siginfo->si_signo;
struct vg_sig_private *priv;
/* Stack must be 8-byte aligned */
sp_top_of_frame &= ~0x7ULL;
sp = sp_top_of_frame - sizeof(struct rt_sigframe);
tst = VG_(get_ThreadState)(tid);
if (! ML_(sf_maybe_extend_stack)(tst, sp, sizeof(struct rt_sigframe), flags))
return;
vg_assert(VG_IS_8_ALIGNED(sp));
/* SIGILL defines addr to be the faulting address */
faultaddr = (Addr)siginfo->_sifields._sigfault._addr;
if (sigNo == VKI_SIGILL && siginfo->si_code > 0)
faultaddr = tst->arch.vex.guest_pc;
struct rt_sigframe *frame = (struct rt_sigframe *) sp;
struct vki_ucontext *ucp = &frame->rs_uc;
if (VG_(clo_trace_signals))
VG_(printf)("rt_sigframe\n");
/* Create siginfo. */
VG_TRACK( pre_mem_write, Vg_CoreSignal, tid, "signal frame siginfo",
(Addr)&frame->rs_info, sizeof(frame->rs_info) );
VG_(memcpy)(&frame->rs_info, siginfo, sizeof(*siginfo));
VG_TRACK( post_mem_write, Vg_CoreSignal, tid,
(Addr)&frame->rs_info, sizeof(frame->rs_info) );
/* Create the ucontext. */
VG_TRACK( pre_mem_write, Vg_CoreSignal, tid, "signal frame ucontext",
(Addr)ucp, offsetof(struct vki_ucontext, uc_mcontext) );
ucp->uc_flags = 0;
ucp->uc_link = 0;
ucp->uc_stack = tst->altstack;
VG_TRACK( post_mem_write, Vg_CoreSignal, tid, (Addr)ucp,
offsetof(struct vki_ucontext, uc_mcontext) );
struct vki_sigcontext *scp = &(frame->rs_uc.uc_mcontext);
setup_sigcontext2(tst, &(scp), siginfo);
ucp->uc_sigmask = tst->sig_mask;
priv = &frame->priv;
/*
* Arguments to signal handler:
*
* r0 = signal number
* r1 = 0 (should be cause)
* r2 = pointer to ucontext
*
* r54 points to the struct rt_sigframe.
*/
tst->arch.vex.guest_r0 = siginfo->si_signo;
tst->arch.vex.guest_r1 = (Addr) &frame->rs_info;
tst->arch.vex.guest_r2 = (Addr) &frame->rs_uc;
tst->arch.vex.guest_r54 = (Addr) frame;
if (flags & VKI_SA_RESTORER)
{
tst->arch.vex.guest_r55 = (Addr) restorer;
}
else
{
tst->arch.vex.guest_r55 = (Addr)&VG_(tilegx_linux_SUBST_FOR_rt_sigreturn);
}
priv->magicPI = 0x31415927;
priv->sigNo_private = sigNo;
priv->vex_shadow1 = tst->arch.vex_shadow1;
priv->vex_shadow2 = tst->arch.vex_shadow2;
/* Set the thread so it will next run the handler. */
/* tst->m_sp = sp; also notify the tool we've updated SP */
VG_TRACK( post_reg_write, Vg_CoreSignal, tid, VG_O_STACK_PTR, sizeof(Addr));
if (VG_(clo_trace_signals))
VG_(printf)("handler = %p\n", handler);
tst->arch.vex.guest_pc = (Addr) handler;
/* This thread needs to be marked runnable, but we leave that the
caller to do. */
if (0)
VG_(printf)("pushed signal frame; sp now = %lx, "
"next %pc = %lx, status=%d\n",
(Addr)frame, tst->arch.vex.guest_pc, tst->status);
}
void VG_(sigframe_create)( ThreadId tid,
Addr sp_top_of_frame,
const vki_siginfo_t *siginfo,
const struct vki_ucontext *siguc,
void *handler,
UInt flags,
const vki_sigset_t *mask,
void *restorer )
{
Addr sp;
ThreadState* tst = VG_(get_ThreadState)(tid);
Addr faultaddr;
Int sigNo = siginfo->si_signo;
struct vg_sig_private *priv;
sp_top_of_frame &= ~0xf;
if (flags & VKI_SA_SIGINFO)
{
sp = sp_top_of_frame - sizeof(struct rt_sigframe);
}
else
{
sp = sp_top_of_frame - sizeof(struct sigframe);
}
tst = VG_(get_ThreadState)(tid);
if (!extend(tst, sp, sp_top_of_frame - sp))
return;
vg_assert(VG_IS_8_ALIGNED(sp));
faultaddr = (Addr)siginfo->_sifields._sigfault._addr;
if (sigNo == VKI_SIGILL && siginfo->si_code > 0)
faultaddr = tst->arch.vex.guest_PC;
if (flags & VKI_SA_SIGINFO)
{
struct rt_sigframe *frame = (struct rt_sigframe *) sp;
struct vki_ucontext *ucp = &frame->rs_uc;
if (VG_(clo_trace_signals))
VG_(printf)("rt_sigframe\n");
VG_TRACK( pre_mem_write, Vg_CoreSignal, tid, "signal frame siginfo",
(Addr)&frame->rs_info, sizeof(frame->rs_info) );
VG_(memcpy)(&frame->rs_info, siginfo, sizeof(*siginfo));
VG_TRACK( post_mem_write, Vg_CoreSignal, tid,
(Addr)&frame->rs_info, sizeof(frame->rs_info) );
VG_TRACK( pre_mem_write, Vg_CoreSignal, tid, "signal frame ucontext",
(Addr)ucp, offsetof(struct vki_ucontext, uc_mcontext) );
ucp->uc_flags = 0;
ucp->uc_link = 0;
ucp->uc_stack = tst->altstack;
VG_TRACK( post_mem_write, Vg_CoreSignal, tid, (Addr)ucp,
offsetof(struct vki_ucontext, uc_mcontext) );
struct vki_sigcontext *scp = &(frame->rs_uc.uc_mcontext);
setup_sigcontext2(tst, &(scp), siginfo);
ucp->uc_sigmask = tst->sig_mask;
priv = &frame->priv;
tst->arch.vex.guest_r4 = siginfo->si_signo;
tst->arch.vex.guest_r5 = (Addr) &frame->rs_info;
tst->arch.vex.guest_r6 = (Addr) &frame->rs_uc;
tst->arch.vex.guest_r29 = (Addr) frame;
tst->arch.vex.guest_r25 = (Addr) handler;
if (flags & VKI_SA_RESTORER)
{
tst->arch.vex.guest_r31 = (Addr) restorer;
}
else
{
tst->arch.vex.guest_r31 = (Addr)&VG_(mips32_linux_SUBST_FOR_rt_sigreturn);
}
}
else
{
if (VG_(clo_trace_signals))