configure chmod 755 etc.

lib/tcov.c:
- can't be cross-compiled (needs stdio.h)
- can be included in libtcc1.a

Reason why bt-xxx.o/bcheck.o are linked separatly is because we
don't want then to linked into exe's and dlls at the same time.

Makefile

@@ -334,12 +334,11 @@ IR = $(IM) mkdir -p $2 && cp -r $1/. $2
 IM = $(info -> $2 : $1)@
 
 B_O = bcheck.o bt-exe.o bt-log.o bt-dll.o
-T_O = tcov.o
 
 # install progs & libs
 install-unx:
 	$(call IBw,$(PROGS) $(PROGS_CROSS),"$(bindir)")
-	$(call IFw,$(LIBTCC1) $(B_O) $(T_O) $(LIBTCC1_U),"$(tccdir)")
+	$(call IFw,$(LIBTCC1) $(B_O) $(LIBTCC1_U),"$(tccdir)")
 	$(call IF,$(TOPSRC)/include/*.h $(TOPSRC)/tcclib.h,"$(tccdir)/include")
 	$(call $(if $(findstring .so,$(LIBTCC)),IBw,IFw),$(LIBTCC),"$(libdir)")
 	$(call IF,$(TOPSRC)/libtcc.h,"$(includedir)")
@@ -364,7 +363,7 @@ uninstall-unx:
 install-win:
 	$(call IBw,$(PROGS) $(PROGS_CROSS) $(subst libtcc.a,,$(LIBTCC)),"$(bindir)")
 	$(call IF,$(TOPSRC)/win32/lib/*.def,"$(tccdir)/lib")
-	$(call IFw,libtcc1.a $(B_O) $(T_O) $(LIBTCC1_W),"$(tccdir)/lib")
+	$(call IFw,libtcc1.a $(B_O) $(LIBTCC1_W),"$(tccdir)/lib")
 	$(call IF,$(TOPSRC)/include/*.h $(TOPSRC)/tcclib.h,"$(tccdir)/include")
 	$(call IR,$(TOPSRC)/win32/include,"$(tccdir)/include")
 	$(call IR,$(TOPSRC)/win32/examples,"$(tccdir)/examples")

c67-gen.c

@@ -108,6 +108,8 @@ enum {
 /* maximum alignment (for aligned attribute support) */
 #define MAX_ALIGN     8
 
+#undef CONFIG_TCC_BCHECK
+
 /******************************************************/
 #else /* ! TARGET_DEFS_ONLY */
 /******************************************************/

lib/Makefile

@@ -38,6 +38,7 @@ endif
 $(X)BT_O = bt-exe.o bt-log.o
 $(X)B_O = $(BCHECK_O) bt-exe.o bt-log.o bt-dll.o
 endif
+$(X)BT_O += tcov.o
 
 DSO_O = dsohandle.o
 
@@ -64,7 +65,6 @@ OBJ-arm-wince = $(ARM_O) $(WIN_O)
 OBJ-riscv64 = $(RISCV64_O) $(BCHECK_O) $(DSO_O)
 
 OBJ-extra = $(filter $(B_O),$(OBJ-$T))
-OBJ-extra += tcov.o
 OBJ-libtcc1 = $(addprefix $(X),$(filter-out $(OBJ-extra),$(OBJ-$T)))
 
 ALL = $(addprefix $(TOP)/,$(X)libtcc1.a $(OBJ-extra))

lib/bcheck.c

@@ -1367,6 +1367,10 @@ int sigaction(int signum, const struct sigaction *act, struct sigaction *oldact)
 
     dprintf (stderr, "%s, %s() %d %p %p\n", __FILE__, __FUNCTION__,
              signum, act, oldact);
+
+    if (sigaction_redir == NULL)
+        __bound_init(0,-1);
+
     if (act) {
         nact = *act;
         if (nact.sa_flags & SA_SIGINFO)

lib/bt-exe.c

@@ -18,11 +18,6 @@ void __bt_init(rt_context *p, int num_callers)
     __attribute__((weak)) void __bound_init(void*, int);
     struct rt_context *rc = &g_rtctxt;
     //fprintf(stderr, "__bt_init %d %p %p\n", num_callers, p->stab_sym, p->bounds_start), fflush(stderr);
-#ifdef __APPLE__
-    /* call __bound_init here due to redirection of sigaction */
-    if (__bound_init && p->bounds_start)
-        __bound_init(p->bounds_start, 0);
-#endif
     if (num_callers) {
         memcpy(rc, p, offsetof(rt_context, next));
         rc->num_callers = num_callers - 1;

tccelf.c

@@ -1479,8 +1479,6 @@ ST_FUNC void tcc_add_runtime(TCCState *s1)
     if (!s1->nostdlib) {
         if (s1->option_pthread)
             tcc_add_library_err(s1, "pthread");
-        if (s1->test_coverage)
-            tcc_add_support(s1, "tcov.o");
         tcc_add_library_err(s1, "c");
 #ifdef TCC_LIBGCC
         if (!s1->static_link) {

tccgen.c

@@ -2949,6 +2949,12 @@ static void gen_opic(int op)
 
 #if defined TCC_TARGET_X86_64 || defined TCC_TARGET_I386
 # define gen_negf gen_opf
+#elif defined TCC_TARGET_ARM
+void gen_negf(int op)
+{
+    /* arm will detect 0-x and replace by vneg */
+    vpushi(0), vswap(), gen_op('-');
+}
 #else
 /* XXX: implement in gen_opf() for other backends too */
 void gen_negf(int op)

tccpe.c

@@ -1915,10 +1915,8 @@ static void pe_add_runtime(TCCState *s1, struct pe_info *pe)
             tcc_add_btstub(s1);
     }
 #endif
-    if (s1->test_coverage) {
-	tcc_add_support(s1, "tcov.o");
+    if (s1->test_coverage)
         tcc_add_tcov(s1);
-    }
 
     /* grab the startup code from libtcc1.a */
 #ifdef TCC_IS_NATIVE

tests/tests2/96_nodata_wanted.c

@@ -58,7 +58,11 @@ ts1:;
         void *p = (void*)&main;
         char cc[] = "static string";
         double d = 8.0;
-        struct __attribute__((packed)) {
+        struct
+#ifndef __arm__
+        __attribute__((packed))
+#endif
+        {
             unsigned x : 12;
             unsigned char y : 7;
             unsigned z : 28, a: 4, b: 5;