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/* |
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* Cisco router simulation platform. |
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* Copyright (c) 2006 Christophe Fillot. All rights reserved. |
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* |
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* RAM emulation. |
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*/ |
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#include <stdio.h> |
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#include <stdlib.h> |
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#include <string.h> |
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#include <time.h> |
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#include <errno.h> |
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#include <unistd.h> |
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#include "cpu.h" |
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#include "vm.h" |
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#include "dynamips.h" |
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#include "memory.h" |
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#include "device.h" |
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/* RAM private data */ |
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struct ram_data { |
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vm_obj_t vm_obj; |
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struct vdevice *dev; |
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char *filename; |
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int delete_file; |
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}; |
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/* Shutdown a RAM device */ |
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void dev_ram_shutdown(vm_instance_t *vm,struct ram_data *d) |
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{ |
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if (d != NULL) { |
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/* Remove the device */ |
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dev_remove(vm,d->dev); |
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free(d->dev); |
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/* Remove filename used to virtualize RAM */ |
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if (d->filename && d->delete_file) { |
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unlink(d->filename); |
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free(d->filename); |
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} |
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/* Free the structure itself */ |
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free(d); |
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} |
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} |
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/* Initialize a RAM zone */ |
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int dev_ram_init(vm_instance_t *vm,char *name,int use_mmap,int delete_file, |
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char *alternate_name,int sparse, |
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m_uint64_t paddr,m_uint32_t len) |
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{ |
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struct ram_data *d; |
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/* allocate the private data structure */ |
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if (!(d = malloc(sizeof(*d)))) { |
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fprintf(stderr,"RAM: unable to create device.\n"); |
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return(-1); |
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} |
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memset(d,0,sizeof(*d)); |
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d->delete_file = delete_file; |
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vm_object_init(&d->vm_obj); |
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d->vm_obj.name = name; |
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d->vm_obj.data = d; |
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d->vm_obj.shutdown = (vm_shutdown_t)dev_ram_shutdown; |
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if (use_mmap) { |
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if (!alternate_name) |
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d->filename = vm_build_filename(vm,name); |
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else |
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d->filename = strdup(alternate_name); |
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if (!d->filename) { |
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fprintf(stderr,"RAM: unable to create filename.\n"); |
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goto err_filename; |
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} |
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} |
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if (!(d->dev = dev_create_ram(vm,name,sparse,d->filename,paddr,len))) { |
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fprintf(stderr,"RAM: unable to create device.\n"); |
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goto err_dev_create; |
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} |
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vm_object_add(vm,&d->vm_obj); |
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return(0); |
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err_dev_create: |
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free(d->filename); |
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err_filename: |
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free(d); |
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return(-1); |
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} |
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/* Initialize a ghosted RAM zone */ |
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int dev_ram_ghost_init(vm_instance_t *vm,char *name,int sparse,char *filename, |
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m_uint64_t paddr,m_uint32_t len) |
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{ |
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struct ram_data *d; |
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/* allocate the private data structure */ |
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if (!filename || !(d = malloc(sizeof(*d)))) { |
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fprintf(stderr,"RAM_ghost: unable to create device.\n"); |
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return(-1); |
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} |
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memset(d,0,sizeof(*d)); |
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d->delete_file = FALSE; |
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if (!(d->filename = strdup(filename))) |
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goto err_filename; |
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vm_object_init(&d->vm_obj); |
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d->vm_obj.name = name; |
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d->vm_obj.data = d; |
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d->vm_obj.shutdown = (vm_shutdown_t)dev_ram_shutdown; |
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if (!(d->dev = dev_create_ghost_ram(vm,name,sparse,d->filename, |
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paddr,len))) |
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{ |
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fprintf(stderr,"RAM_ghost: unable to create device.\n"); |
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goto err_dev_create; |
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} |
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vm_object_add(vm,&d->vm_obj); |
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return(0); |
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err_dev_create: |
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free(d->filename); |
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err_filename: |
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free(d); |
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return(-1); |
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} |