target-microblaze: Use tcg_gen_movcond in eval_cond_jmp
[qemu/ar7.git] / include / exec / memory-internal.h
blob58399b93182f3c2509b7318bba1559eb38e63a99
1 /*
2 * Declarations for functions which are internal to the memory subsystem.
4 * Copyright 2011 Red Hat, Inc. and/or its affiliates
6 * Authors:
7 * Avi Kivity <avi@redhat.com>
9 * This work is licensed under the terms of the GNU GPL, version 2 or
10 * later. See the COPYING file in the top-level directory.
15 * This header is for use by exec.c, memory.c and accel/tcg/cputlb.c ONLY,
16 * for declarations which are shared between the memory subsystem's
17 * internals and the TCG TLB code. Do not include it from elsewhere.
20 #ifndef MEMORY_INTERNAL_H
21 #define MEMORY_INTERNAL_H
23 #ifndef CONFIG_USER_ONLY
24 static inline AddressSpaceDispatch *flatview_to_dispatch(FlatView *fv)
26 return fv->dispatch;
29 static inline AddressSpaceDispatch *address_space_to_dispatch(AddressSpace *as)
31 return flatview_to_dispatch(address_space_to_flatview(as));
34 FlatView *address_space_get_flatview(AddressSpace *as);
35 void flatview_unref(FlatView *view);
37 extern const MemoryRegionOps unassigned_mem_ops;
39 bool memory_region_access_valid(MemoryRegion *mr, hwaddr addr,
40 unsigned size, bool is_write);
42 void flatview_add_to_dispatch(FlatView *fv, MemoryRegionSection *section);
43 AddressSpaceDispatch *address_space_dispatch_new(FlatView *fv);
44 void address_space_dispatch_compact(AddressSpaceDispatch *d);
45 void address_space_dispatch_free(AddressSpaceDispatch *d);
47 void mtree_print_dispatch(fprintf_function mon, void *f,
48 struct AddressSpaceDispatch *d,
49 MemoryRegion *root);
51 /* Opaque struct for passing info from memory_notdirty_write_prepare()
52 * to memory_notdirty_write_complete(). Callers should treat all fields
53 * as private, with the exception of @active.
55 * @active is a field which is not touched by either the prepare or
56 * complete functions, but which the caller can use if it wishes to
57 * track whether it has called prepare for this struct and so needs
58 * to later call the complete function.
60 typedef struct {
61 CPUState *cpu;
62 ram_addr_t ram_addr;
63 vaddr mem_vaddr;
64 unsigned size;
65 bool locked;
66 bool active;
67 } NotDirtyInfo;
69 /**
70 * memory_notdirty_write_prepare: call before writing to non-dirty memory
71 * @ndi: pointer to opaque NotDirtyInfo struct
72 * @cpu: CPU doing the write
73 * @mem_vaddr: virtual address of write
74 * @ram_addr: the ram address of the write
75 * @size: size of write in bytes
77 * Any code which writes to the host memory corresponding to
78 * guest RAM which has been marked as NOTDIRTY must wrap those
79 * writes in calls to memory_notdirty_write_prepare() and
80 * memory_notdirty_write_complete():
82 * NotDirtyInfo ndi;
83 * memory_notdirty_write_prepare(&ndi, ....);
84 * ... perform write here ...
85 * memory_notdirty_write_complete(&ndi);
87 * These calls will ensure that we flush any TCG translated code for
88 * the memory being written, update the dirty bits and (if possible)
89 * remove the slowpath callback for writing to the memory.
91 * This must only be called if we are using TCG; it will assert otherwise.
93 * We may take a lock in the prepare call, so callers must ensure that
94 * they don't exit (via longjump or otherwise) without calling complete.
96 * This call must only be made inside an RCU critical section.
97 * (Note that while we're executing a TCG TB we're always in an
98 * RCU critical section, which is likely to be the case for callers
99 * of these functions.)
101 void memory_notdirty_write_prepare(NotDirtyInfo *ndi,
102 CPUState *cpu,
103 vaddr mem_vaddr,
104 ram_addr_t ram_addr,
105 unsigned size);
107 * memory_notdirty_write_complete: finish write to non-dirty memory
108 * @ndi: pointer to the opaque NotDirtyInfo struct which was initialized
109 * by memory_not_dirty_write_prepare().
111 void memory_notdirty_write_complete(NotDirtyInfo *ndi);
113 #endif
114 #endif