* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301 USA
+ * License along with this library; if not, see <http://www.gnu.org/licenses/>.
*/
#include <assert.h>
{
if (b == 0) {
env->sregs[SR_MSR] |= MSR_DZ;
- /* FIXME: Raise the div by zero exception. */
+
+ if ((env->sregs[SR_MSR] & MSR_EE)
+ && !(env->pvr.regs[2] & PVR2_DIV_ZERO_EXC_MASK)) {
+ env->sregs[SR_ESR] = ESR_EC_DIVZERO;
+ helper_raise_exception(EXCP_HW_EXCP);
+ }
return 0;
}
env->sregs[SR_MSR] &= ~MSR_DZ;
return 0;
}
+void helper_memalign(uint32_t addr, uint32_t dr, uint32_t wr, uint32_t mask)
+{
+ if (addr & mask) {
+ qemu_log_mask(CPU_LOG_INT,
+ "unaligned access addr=%x mask=%x, wr=%d dr=r%d\n",
+ addr, mask, wr, dr);
+ env->sregs[SR_EAR] = addr;
+ env->sregs[SR_ESR] = ESR_EC_UNALIGNED_DATA | (wr << 10) \
+ | (dr & 31) << 5;
+ if (mask == 3) {
+ env->sregs[SR_ESR] |= 1 << 11;
+ }
+ if (!(env->sregs[SR_MSR] & MSR_EE)) {
+ return;
+ }
+ helper_raise_exception(EXCP_HW_EXCP);
+ }
+}
+
#if !defined(CONFIG_USER_ONLY)
/* Writes/reads to the MMU's special regs end up here. */
uint32_t helper_mmu_read(uint32_t rn)
mmu_write(env, rn, v);
}
#endif
+
+void do_unassigned_access(target_phys_addr_t addr, int is_write, int is_exec,
+ int is_asi, int size)
+{
+ CPUState *saved_env;
+ /* XXX: hack to restore env in all cases, even if not called from
+ generated code */
+ saved_env = env;
+ env = cpu_single_env;
+ qemu_log_mask(CPU_LOG_INT, "Unassigned " TARGET_FMT_plx " wr=%d exe=%d\n",
+ addr, is_write, is_exec);
+ if (!(env->sregs[SR_MSR] & MSR_EE)) {
+ return;
+ }
+
+ env->sregs[SR_EAR] = addr;
+ if (is_exec) {
+ if ((env->pvr.regs[2] & PVR2_IOPB_BUS_EXC_MASK)) {
+ env->sregs[SR_ESR] = ESR_EC_INSN_BUS;
+ helper_raise_exception(EXCP_HW_EXCP);
+ }
+ } else {
+ if ((env->pvr.regs[2] & PVR2_DOPB_BUS_EXC_MASK)) {
+ env->sregs[SR_ESR] = ESR_EC_DATA_BUS;
+ helper_raise_exception(EXCP_HW_EXCP);
+ }
+ }
+}