Archipelago » qemu

/*

 * Declarations for obsolete exec.c functions

 *

 * Copyright 2011 Red Hat, Inc. and/or its affiliates

 *

 * Authors:

 *  Avi Kivity <avi@redhat.com>

 *

 * This work is licensed under the terms of the GNU GPL, version 2 or

 * later.  See the COPYING file in the top-level directory.

 *

 */

/*

 * This header is for use by exec.c and memory.c ONLY.  Do not include it.

 * The functions declared here will be removed soon.

 */

#ifndef EXEC_OBSOLETE_H

#define EXEC_OBSOLETE_H

#ifndef WANT_EXEC_OBSOLETE

#error Do not include exec-obsolete.h

#endif

#ifndef CONFIG_USER_ONLY

#include "hw/xen.h"

ram_addr_t qemu_ram_alloc_from_ptr(ram_addr_t size, void *host,

                                   MemoryRegion *mr);

ram_addr_t qemu_ram_alloc(ram_addr_t size, MemoryRegion *mr);

void qemu_ram_free(ram_addr_t addr);

void qemu_ram_free_from_ptr(ram_addr_t addr);

struct MemoryRegion;

struct MemoryRegionSection;

void cpu_register_physical_memory_log(struct MemoryRegionSection *section,

                                      bool readonly);

void qemu_register_coalesced_mmio(target_phys_addr_t addr, ram_addr_t size);

void qemu_unregister_coalesced_mmio(target_phys_addr_t addr, ram_addr_t size);

int cpu_physical_memory_set_dirty_tracking(int enable);

#define VGA_DIRTY_FLAG       0x01

#define CODE_DIRTY_FLAG      0x02

#define MIGRATION_DIRTY_FLAG 0x08

static inline int cpu_physical_memory_get_dirty_flags(ram_addr_t addr)

{

    return ram_list.phys_dirty[addr >> TARGET_PAGE_BITS];

}

/* read dirty bit (return 0 or 1) */

static inline int cpu_physical_memory_is_dirty(ram_addr_t addr)

{

    return cpu_physical_memory_get_dirty_flags(addr) == 0xff;

}

static inline int cpu_physical_memory_get_dirty(ram_addr_t start,

                                                ram_addr_t length,

                                                int dirty_flags)

{

    int ret = 0;

    ram_addr_t addr, end;

    end = TARGET_PAGE_ALIGN(start + length);

    start &= TARGET_PAGE_MASK;

    for (addr = start; addr < end; addr += TARGET_PAGE_SIZE) {

        ret |= cpu_physical_memory_get_dirty_flags(addr) & dirty_flags;

    }

    return ret;

}

static inline int cpu_physical_memory_set_dirty_flags(ram_addr_t addr,

                                                      int dirty_flags)

{

    if ((dirty_flags & MIGRATION_DIRTY_FLAG) &&

        !cpu_physical_memory_get_dirty(addr, TARGET_PAGE_SIZE,

                                       MIGRATION_DIRTY_FLAG)) {

        ram_list.dirty_pages++;

    }

    return ram_list.phys_dirty[addr >> TARGET_PAGE_BITS] |= dirty_flags;

}

static inline void cpu_physical_memory_set_dirty(ram_addr_t addr)

{

    cpu_physical_memory_set_dirty_flags(addr, 0xff);

}

static inline int cpu_physical_memory_clear_dirty_flags(ram_addr_t addr,

                                                        int dirty_flags)

{

    int mask = ~dirty_flags;

    if ((dirty_flags & MIGRATION_DIRTY_FLAG) &&

        cpu_physical_memory_get_dirty(addr, TARGET_PAGE_SIZE,

                                      MIGRATION_DIRTY_FLAG)) {

        ram_list.dirty_pages--;

    }

    return ram_list.phys_dirty[addr >> TARGET_PAGE_BITS] &= mask;

}

static inline void cpu_physical_memory_set_dirty_range(ram_addr_t start,

                                                       ram_addr_t length,

                                                       int dirty_flags)

{

    ram_addr_t addr, end;

    end = TARGET_PAGE_ALIGN(start + length);

    start &= TARGET_PAGE_MASK;

    for (addr = start; addr < end; addr += TARGET_PAGE_SIZE) {

        cpu_physical_memory_set_dirty_flags(addr, dirty_flags);

    }

    xen_modified_memory(addr, length);

}

static inline void cpu_physical_memory_mask_dirty_range(ram_addr_t start,

                                                        ram_addr_t length,

                                                        int dirty_flags)

{

    ram_addr_t addr, end;

    end = TARGET_PAGE_ALIGN(start + length);

    start &= TARGET_PAGE_MASK;

    for (addr = start; addr < end; addr += TARGET_PAGE_SIZE) {

        cpu_physical_memory_clear_dirty_flags(addr, dirty_flags);

    }

}

void cpu_physical_memory_reset_dirty(ram_addr_t start, ram_addr_t end,

                                     int dirty_flags);

extern const IORangeOps memory_region_iorange_ops;

#endif

#endif