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Annotation of qemu/target-s390x/op_helper.c, revision 1.1.1.2

1.1       root        1: /*
                      2:  *  S/390 helper routines
                      3:  *
                      4:  *  Copyright (c) 2009 Alexander Graf
                      5:  *
                      6:  * This library is free software; you can redistribute it and/or
                      7:  * modify it under the terms of the GNU Lesser General Public
                      8:  * License as published by the Free Software Foundation; either
                      9:  * version 2 of the License, or (at your option) any later version.
                     10:  *
                     11:  * This library is distributed in the hope that it will be useful,
                     12:  * but WITHOUT ANY WARRANTY; without even the implied warranty of
                     13:  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
                     14:  * Lesser General Public License for more details.
                     15:  *
                     16:  * You should have received a copy of the GNU Lesser General Public
1.1.1.2 ! root       17:  * License along with this library; if not, see <http://www.gnu.org/licenses/>.
1.1       root       18:  */
                     19: 
                     20: #include "exec.h"
                     21: 
                     22: /*****************************************************************************/
                     23: /* Softmmu support */
                     24: #if !defined (CONFIG_USER_ONLY)
                     25: 
                     26: #define MMUSUFFIX _mmu
                     27: 
                     28: #define SHIFT 0
                     29: #include "softmmu_template.h"
                     30: 
                     31: #define SHIFT 1
                     32: #include "softmmu_template.h"
                     33: 
                     34: #define SHIFT 2
                     35: #include "softmmu_template.h"
                     36: 
                     37: #define SHIFT 3
                     38: #include "softmmu_template.h"
                     39: 
                     40: /* try to fill the TLB and return an exception if error. If retaddr is
                     41:    NULL, it means that the function was called in C code (i.e. not
                     42:    from generated code or from helper.c) */
                     43: /* XXX: fix it to restore all registers */
                     44: void tlb_fill (target_ulong addr, int is_write, int mmu_idx, void *retaddr)
                     45: {
                     46:     TranslationBlock *tb;
                     47:     CPUState *saved_env;
                     48:     unsigned long pc;
                     49:     int ret;
                     50: 
                     51:     /* XXX: hack to restore env in all cases, even if not called from
                     52:        generated code */
                     53:     saved_env = env;
                     54:     env = cpu_single_env;
                     55:     ret = cpu_s390x_handle_mmu_fault(env, addr, is_write, mmu_idx, 1);
                     56:     if (unlikely(ret != 0)) {
                     57:         if (likely(retaddr)) {
                     58:             /* now we have a real cpu fault */
                     59:             pc = (unsigned long)retaddr;
                     60:             tb = tb_find_pc(pc);
                     61:             if (likely(tb)) {
                     62:                 /* the PC is inside the translated code. It means that we have
                     63:                    a virtual CPU fault */
                     64:                 cpu_restore_state(tb, env, pc, NULL);
                     65:             }
                     66:         }
                     67:         /* XXX */
                     68:         /* helper_raise_exception_err(env->exception_index, env->error_code); */
                     69:     }
                     70:     env = saved_env;
                     71: }
                     72: 
                     73: #endif

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