DEF_HELPER_FLAGS_3(stby_e, TCG_CALL_NO_WG, void, env, tl, tr)
DEF_HELPER_FLAGS_3(stby_e_parallel, TCG_CALL_NO_WG, void, env, tl, tr)
+DEF_HELPER_FLAGS_1(ldc_check, TCG_CALL_NO_RWG, void, tl)
+
DEF_HELPER_FLAGS_4(probe, TCG_CALL_NO_WG, tr, env, tl, i32, i32)
DEF_HELPER_FLAGS_1(loaded_fr0, TCG_CALL_NO_RWG, void, env)
do_stby_e(env, addr, val, true, GETPC());
}
+void HELPER(ldc_check)(target_ulong addr)
+{
+ if (unlikely(addr & 0xf)) {
+ qemu_log_mask(LOG_GUEST_ERROR,
+ "Undefined ldc to unaligned address mod 16: "
+ TARGET_FMT_lx "\n", addr);
+ }
+}
+
target_ureg HELPER(probe)(CPUHPPAState *env, target_ulong addr,
uint32_t level, uint32_t want)
{
static bool trans_ldc(DisasContext *ctx, arg_ldst *a)
{
- MemOp mop = MO_TEUL | MO_ALIGN_16 | a->size;
+ MemOp mop = MO_TE | MO_ALIGN | a->size;
TCGv_reg zero, dest, ofs;
TCGv_tl addr;
form_gva(ctx, &addr, &ofs, a->b, a->x, a->scale ? a->size : 0,
a->disp, a->sp, a->m, ctx->mmu_idx == MMU_PHYS_IDX);
+
+ /*
+ * For hppa1.1, LDCW is undefined unless aligned mod 16.
+ * However actual hardware succeeds with aligned mod 4.
+ * Detect this case and log a GUEST_ERROR.
+ *
+ * TODO: HPPA64 relaxes the over-alignment requirement
+ * with the ,co completer.
+ */
+ gen_helper_ldc_check(addr);
+
zero = tcg_const_reg(0);
tcg_gen_atomic_xchg_reg(dest, addr, zero, ctx->mmu_idx, mop);
+ tcg_temp_free(zero);
+
if (a->m) {
save_gpr(ctx, a->b, ofs);
}