atmos/RAP-optimizations
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new check code fragment

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This commit is contained in:
fanfuqiang 2018-09-25 10:14:03 +08:00
parent c5b1d1a62e
commit 4eefb82dd0
1 changed files with 35 additions and 6 deletions
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41
src/rap_plugin/rap-fe-cfi.c
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@ -43,6 +43,8 @@ static bitmap sensi_funcs;
static struct pointer_set_t *pointer_types; static struct pointer_set_t *pointer_types;
// //
static bool will_call_ipa_pta; static bool will_call_ipa_pta;
/* For compatiable with the original RAP */
typedef rap_hash_t.hash rap_hash_value_type;
/* Test GCC will call some passes which is benefit. */ /* Test GCC will call some passes which is benefit. */
void void
@ -54,7 +56,7 @@ rap_check_will_call_passes (void* gcc_data, void* user_data)
(! strcmp (((struct opt_pass *)current_pass)->name, "inline"))) (! strcmp (((struct opt_pass *)current_pass)->name, "inline")))
{ {
if (*(bool*)gcc_data) if (*(bool*)gcc_data)
fprintf(dump_rap_opt_statistics_fd, "[+] NOT call pass inline\n"); fprintf(dump_rap_opt_statistics_fd, "[+] NOT call pass 'inline'\n");
} }
return; return;
@ -266,6 +268,20 @@ rap_optimization_clean ()
return; return;
} }
/* Build the check statement:
if ((int *)(cs->target_function - sizeof(rap_hash_value_type)) != hash)
error () */
static void
build_cfi_check (gimple cs, rap_hash_value_type hash)
{
tree decl; type;
gcc_assert (is_gimple_call (cs));
decl = gimple_call_fn (cs);
/* We must be indirect call */
gcc_assert (DECL_CODE (decl) == SSA_NAME);
type = cs->gimple_call.u.fntype;
}
// types_compatible_p // types_compatible_p
/* /*
@ -300,21 +316,34 @@ rap_fe_cfi_execute ()
func = DECL_STRUCT_FUNCTION (node->symbol.decl); func = DECL_STRUCT_FUNCTION (node->symbol.decl);
push_cfun (func); push_cfun (func);
//
FOR_EACH_BB_FN (bb, func) FOR_EACH_BB_FN (bb, func)
{ {
gimple_stmt_iterator gsi; gimple_stmt_iterator gsi;
for (gsi = gsi_start_bb (bb); !gsi_end_p (gsi); gsi_next (&gsi)) for (gsi = gsi_start_bb (bb); !gsi_end_p (gsi); gsi_next (&gsi))
{ {
gimple stmt = gsi_stmt (gsi); tree decl;
gimple cs;
rap_hash_value_type hash;
cs = gsi_stmt (gsi);
/* We are in forward cfi only cares about function call */
if (! is_gimple_call (cs))
continue;
/* direct call, nothing todo */
if (gimple_call_fndecl (cs))
;
/* indirect call */
else
{
decl = gimple_call_fn (cs);
hash = find_cfi_hash (decl);
gcc_assert (hash);
build_cfi_check (cs, hash);
}
} }
} }
pop_cfun (); pop_cfun ();
} }
indirect_function_maps = pointer_map_create (); indirect_function_maps = pointer_map_create ();