Remove unaligned accesses in ia64_apply_fixes().

Make sure that the static variables are not optimized away in GOTO_TB. (patch by Andreas Schwab)

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@3042 c046a42c-6fe2-441c-8c8c-71466251a162

diff --git a/dyngen.h b/dyngen.h
index 48e4019..86dd3d6 100644 (file)
--- a/dyngen.h
+++ b/dyngen.h
@@ -392,7 +392,8 @@ static inline void ia64_apply_fixes (uint8_t **gen_code_pp,
        0x05, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, /* nop 0; brl IP */
        0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xc0
     };
-    uint8_t *gen_code_ptr = *gen_code_pp, *plt_start, *got_start, *vp;
+    uint8_t *gen_code_ptr = *gen_code_pp, *plt_start, *got_start;
+    uint64_t *vp;
     struct ia64_fixup *fixup;
     unsigned int offset = 0;
     struct fdesc {
@@ -429,12 +430,12 @@ static inline void ia64_apply_fixes (uint8_t **gen_code_pp,
     /* First, create the GOT: */
     for (fixup = ltoff_fixes; fixup; fixup = fixup->next) {
        /* first check if we already have this value in the GOT: */
-       for (vp = got_start; vp < gen_code_ptr; ++vp)
-           if (*(uint64_t *) vp == fixup->value)
+       for (vp = (uint64_t *) got_start; vp < (uint64_t *) gen_code_ptr; ++vp)
+           if (*vp == fixup->value)
                break;
-       if (vp == gen_code_ptr) {
+       if (vp == (uint64_t *) gen_code_ptr) {
            /* Nope, we need to put the value in the GOT: */
-           *(uint64_t *) vp = fixup->value;
+           *vp = fixup->value;
            gen_code_ptr += 8;
        }
        ia64_imm22(fixup->addr, (long) vp - gp);

diff --git a/exec-all.h b/exec-all.h
index dbfe457..8ea057b 100644 (file)
--- a/exec-all.h
+++ b/exec-all.h
@@ -346,8 +346,8 @@ do {\
    cache flushing, but slower because of indirect jump) */
 #define GOTO_TB(opname, tbparam, n)\
 do {\
-    static void __attribute__((unused)) *dummy ## n = &&dummy_label ## n;\
-    static void __attribute__((unused)) *__op_label ## n \
+    static void __attribute__((used)) *dummy ## n = &&dummy_label ## n;\
+    static void __attribute__((used)) *__op_label ## n \
         __asm__(ASM_OP_LABEL_NAME(n, opname)) = &&label ## n;\
     goto *(void *)(((TranslationBlock *)tbparam)->tb_next[n]);\
 label ## n: ;\