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/* |
/* |
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* Copyright (C) 2003-2005 Anders Gavare. All rights reserved. |
* Copyright (C) 2003-2006 Anders Gavare. All rights reserved. |
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* |
* |
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* Redistribution and use in source and binary forms, with or without |
* Redistribution and use in source and binary forms, with or without |
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* modification, are permitted provided that the following conditions are met: |
* modification, are permitted provided that the following conditions are met: |
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* SUCH DAMAGE. |
* SUCH DAMAGE. |
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* |
* |
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* |
* |
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* $Id: memory.c,v 1.182 2005/11/22 16:26:36 debug Exp $ |
* $Id: memory.c,v 1.187 2006/01/14 12:51:59 debug Exp $ |
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* |
* |
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* Functions for handling the memory of an emulated machine. |
* Functions for handling the memory of an emulated machine. |
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*/ |
*/ |
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#include <sys/types.h> |
#include <sys/types.h> |
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#include <sys/mman.h> |
#include <sys/mman.h> |
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#include "bintrans.h" |
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#include "cop0.h" |
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#include "cpu.h" |
#include "cpu.h" |
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#include "machine.h" |
#include "machine.h" |
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#include "memory.h" |
#include "memory.h" |
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#include "mips_cpu_types.h" |
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#include "misc.h" |
#include "misc.h" |
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extern int quiet_mode; |
extern int verbose; |
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extern volatile int single_step; |
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/* |
/* |
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/* |
/* |
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* memory_points_to_string(): |
* memory_points_to_string(): |
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* |
* |
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* Returns 1 if there's something string-like at addr, otherwise 0. |
* Returns 1 if there's something string-like in emulated memory at address |
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* addr, otherwise 0. |
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*/ |
*/ |
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int memory_points_to_string(struct cpu *cpu, struct memory *mem, uint64_t addr, |
int memory_points_to_string(struct cpu *cpu, struct memory *mem, uint64_t addr, |
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int min_string_length) |
int min_string_length) |
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/* |
/* |
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* memory_conv_to_string(): |
* memory_conv_to_string(): |
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* |
* |
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* Convert virtual memory contents to a string, placing it in a |
* Convert emulated memory contents to a string, placing it in a buffer |
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* buffer provided by the caller. |
* provided by the caller. |
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*/ |
*/ |
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char *memory_conv_to_string(struct cpu *cpu, struct memory *mem, uint64_t addr, |
char *memory_conv_to_string(struct cpu *cpu, struct memory *mem, uint64_t addr, |
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char *buf, int bufsize) |
char *buf, int bufsize) |
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/* |
/* |
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* memory_device_dyntrans_access(): |
* memory_device_dyntrans_access(): |
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* |
* |
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* Get the lowest and highest dyntrans (or bintrans) access since last time. |
* Get the lowest and highest dyntrans access since last time. |
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*/ |
*/ |
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void memory_device_dyntrans_access(struct cpu *cpu, struct memory *mem, |
void memory_device_dyntrans_access(struct cpu *cpu, struct memory *mem, |
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void *extra, uint64_t *low, uint64_t *high) |
void *extra, uint64_t *low, uint64_t *high) |
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for (i=0; i<mem->n_mmapped_devices; i++) { |
for (i=0; i<mem->n_mmapped_devices; i++) { |
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if (mem->dev_extra[i] == extra && |
if (mem->dev_extra[i] == extra && |
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mem->dev_flags[i] & DM_DYNTRANS_WRITE_OK && |
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mem->dev_dyntrans_data[i] != NULL) { |
mem->dev_dyntrans_data[i] != NULL) { |
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if (mem->dev_dyntrans_write_low[i] != (uint64_t) -1) |
if (mem->dev_dyntrans_write_low[i] != (uint64_t) -1) |
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need_inval = 1; |
need_inval = 1; |
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/* |
/* |
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* memory_device_register_statefunction(): |
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* |
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* TODO: Hm. This is semi-ugly. Should probably be rewritten/redesigned |
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* some day. |
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*/ |
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void memory_device_register_statefunction( |
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struct memory *mem, void *extra, |
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int (*dev_f_state)(struct cpu *, |
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struct memory *, void *extra, int wf, int nr, |
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int *type, char **namep, void **data, size_t *len)) |
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{ |
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int i; |
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for (i=0; i<mem->n_mmapped_devices; i++) |
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if (mem->dev_extra[i] == extra) { |
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mem->dev_f_state[i] = dev_f_state; |
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return; |
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} |
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printf("memory_device_register_statefunction(): " |
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"couldn't find the device\n"); |
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exit(1); |
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} |
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/* |
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* memory_device_register(): |
* memory_device_register(): |
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* |
* |
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* Register a (memory mapped) device by adding it to the dev_* fields of a |
* Register a (memory mapped) device by adding it to the dev_* fields of a |
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size_t,int,void *), |
size_t,int,void *), |
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void *extra, int flags, unsigned char *dyntrans_data) |
void *extra, int flags, unsigned char *dyntrans_data) |
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{ |
{ |
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int i; |
int i, newi = 0; |
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if (mem->n_mmapped_devices >= MAX_DEVICES) { |
if (mem->n_mmapped_devices >= MAX_DEVICES) { |
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fprintf(stderr, "memory_device_register(): too many " |
fprintf(stderr, "memory_device_register(): too many " |
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exit(1); |
exit(1); |
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} |
} |
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/* Check for collisions: */ |
/* |
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* Figure out at which index to insert this device, and simultaneously |
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* check for collisions: |
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*/ |
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newi = -1; |
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for (i=0; i<mem->n_mmapped_devices; i++) { |
for (i=0; i<mem->n_mmapped_devices; i++) { |
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if (i == 0 && baseaddr + len <= mem->dev_baseaddr[i]) |
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newi = i; |
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if (i > 0 && baseaddr + len <= mem->dev_baseaddr[i] && |
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baseaddr >= mem->dev_endaddr[i-1]) |
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newi = i; |
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if (i == mem->n_mmapped_devices - 1 && |
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baseaddr >= mem->dev_endaddr[i]) |
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newi = i + 1; |
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/* If we are not colliding with device i, then continue: */ |
/* If we are not colliding with device i, then continue: */ |
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if (baseaddr + len <= mem->dev_baseaddr[i]) |
if (baseaddr + len <= mem->dev_baseaddr[i]) |
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continue; |
continue; |
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if (baseaddr >= mem->dev_baseaddr[i] + mem->dev_length[i]) |
if (baseaddr >= mem->dev_endaddr[i]) |
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continue; |
continue; |
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fatal("\nWARNING! \"%s\" collides with device %i (\"%s\")!\n" |
fatal("\nERROR! \"%s\" collides with device %i (\"%s\")!\n", |
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" Run-time behaviour will be undefined!\n\n", |
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device_name, i, mem->dev_name[i]); |
device_name, i, mem->dev_name[i]); |
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exit(1); |
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} |
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if (mem->n_mmapped_devices == 0) |
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newi = 0; |
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if (newi == -1) { |
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fatal("INTERNAL ERROR\n"); |
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exit(1); |
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} |
} |
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/* (40 bits of physical address is displayed) */ |
if (verbose >= 2) { |
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debug("device %2i at 0x%010llx: %s", |
/* (40 bits of physical address is displayed) */ |
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mem->n_mmapped_devices, (long long)baseaddr, device_name); |
debug("device at 0x%010llx: %s", (long long)baseaddr, |
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device_name); |
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if (flags & (DM_DYNTRANS_OK | DM_DYNTRANS_WRITE_OK) |
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&& (baseaddr & mem->dev_dyntrans_alignment) != 0) { |
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fatal("\nWARNING: Device dyntrans access, but unaligned" |
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" baseaddr 0x%llx.\n", (long long)baseaddr); |
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} |
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if (flags & (DM_DYNTRANS_OK | DM_DYNTRANS_WRITE_OK) |
if (flags & (DM_DYNTRANS_OK | DM_DYNTRANS_WRITE_OK)) { |
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&& (baseaddr & mem->dev_dyntrans_alignment) != 0) { |
debug(" (dyntrans %s)", |
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fatal("\nWARNING: Device dyntrans access, but unaligned" |
(flags & DM_DYNTRANS_WRITE_OK)? "R/W" : "R"); |
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" baseaddr 0x%llx.\n", (long long)baseaddr); |
} |
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debug("\n"); |
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} |
} |
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if (flags & (DM_DYNTRANS_OK | DM_DYNTRANS_WRITE_OK)) { |
for (i=0; i<mem->n_mmapped_devices; i++) { |
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debug(" (dyntrans %s)", |
if (dyntrans_data == mem->dev_dyntrans_data[i] && |
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(flags & DM_DYNTRANS_WRITE_OK)? "R/W" : "R"); |
mem->dev_flags[i] & (DM_DYNTRANS_OK | DM_DYNTRANS_WRITE_OK) |
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&& flags & (DM_DYNTRANS_OK | DM_DYNTRANS_WRITE_OK)) { |
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fatal("ERROR: the data pointer used for dyntrans " |
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"accesses must only be used once!\n"); |
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fatal("(%p cannot be used by '%s'; already in use by '" |
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"%s')\n", dyntrans_data, device_name, |
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mem->dev_name[i]); |
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exit(1); |
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} |
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} |
} |
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debug("\n"); |
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mem->dev_name[mem->n_mmapped_devices] = strdup(device_name); |
mem->n_mmapped_devices++; |
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mem->dev_baseaddr[mem->n_mmapped_devices] = baseaddr; |
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mem->dev_endaddr[mem->n_mmapped_devices] = baseaddr + len; |
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mem->dev_length[mem->n_mmapped_devices] = len; |
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mem->dev_flags[mem->n_mmapped_devices] = flags; |
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mem->dev_dyntrans_data[mem->n_mmapped_devices] = dyntrans_data; |
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if (mem->dev_name[mem->n_mmapped_devices] == NULL) { |
/* |
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* YUCK! This is ugly. TODO: fix |
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*/ |
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/* Make space for the new entry: */ |
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memmove(&mem->dev_name[newi+1], &mem->dev_name[newi], sizeof(char *) * |
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(MAX_DEVICES - newi - 1)); |
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memmove(&mem->dev_baseaddr[newi+1], &mem->dev_baseaddr[newi], |
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sizeof(uint64_t) * (MAX_DEVICES - newi - 1)); |
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memmove(&mem->dev_endaddr[newi+1], &mem->dev_endaddr[newi], |
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sizeof(uint64_t) * (MAX_DEVICES - newi - 1)); |
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memmove(&mem->dev_length[newi+1], &mem->dev_length[newi], |
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sizeof(uint64_t) * (MAX_DEVICES - newi - 1)); |
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memmove(&mem->dev_flags[newi+1], &mem->dev_flags[newi], sizeof(int) * |
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(MAX_DEVICES - newi - 1)); |
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memmove(&mem->dev_extra[newi+1], &mem->dev_extra[newi], sizeof(void *) * |
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(MAX_DEVICES - newi - 1)); |
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memmove(&mem->dev_f[newi+1], &mem->dev_f[newi], sizeof(void *) * |
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(MAX_DEVICES - newi - 1)); |
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memmove(&mem->dev_dyntrans_data[newi+1], &mem->dev_dyntrans_data[newi], |
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sizeof(void *) * (MAX_DEVICES - newi - 1)); |
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memmove(&mem->dev_dyntrans_write_low[newi+1], |
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&mem->dev_dyntrans_write_low[newi], |
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sizeof(uint64_t) * (MAX_DEVICES - newi - 1)); |
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memmove(&mem->dev_dyntrans_write_high[newi+1], |
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&mem->dev_dyntrans_write_high[newi], |
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sizeof(uint64_t) * (MAX_DEVICES - newi - 1)); |
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mem->dev_name[newi] = strdup(device_name); |
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mem->dev_baseaddr[newi] = baseaddr; |
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mem->dev_endaddr[newi] = baseaddr + len; |
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mem->dev_length[newi] = len; |
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mem->dev_flags[newi] = flags; |
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mem->dev_dyntrans_data[newi] = dyntrans_data; |
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if (mem->dev_name[newi] == NULL) { |
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fprintf(stderr, "out of memory\n"); |
fprintf(stderr, "out of memory\n"); |
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exit(1); |
exit(1); |
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} |
} |
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exit(1); |
exit(1); |
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} |
} |
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mem->dev_dyntrans_write_low[mem->n_mmapped_devices] = (uint64_t)-1; |
mem->dev_dyntrans_write_low[newi] = (uint64_t)-1; |
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mem->dev_dyntrans_write_high[mem->n_mmapped_devices] = 0; |
mem->dev_dyntrans_write_high[newi] = 0; |
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mem->dev_f[mem->n_mmapped_devices] = f; |
mem->dev_f[newi] = f; |
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mem->dev_extra[mem->n_mmapped_devices] = extra; |
mem->dev_extra[newi] = extra; |
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mem->n_mmapped_devices++; |
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if (baseaddr < mem->mmap_dev_minaddr) |
if (baseaddr < mem->mmap_dev_minaddr) |
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mem->mmap_dev_minaddr = baseaddr & ~mem->dev_dyntrans_alignment; |
mem->mmap_dev_minaddr = baseaddr & ~mem->dev_dyntrans_alignment; |
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(MAX_DEVICES - i - 1)); |
(MAX_DEVICES - i - 1)); |
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memmove(&mem->dev_baseaddr[i], &mem->dev_baseaddr[i+1], |
memmove(&mem->dev_baseaddr[i], &mem->dev_baseaddr[i+1], |
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sizeof(uint64_t) * (MAX_DEVICES - i - 1)); |
sizeof(uint64_t) * (MAX_DEVICES - i - 1)); |
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memmove(&mem->dev_endaddr[i], &mem->dev_endaddr[i+1], |
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sizeof(uint64_t) * (MAX_DEVICES - i - 1)); |
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memmove(&mem->dev_length[i], &mem->dev_length[i+1], sizeof(uint64_t) * |
memmove(&mem->dev_length[i], &mem->dev_length[i+1], sizeof(uint64_t) * |
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(MAX_DEVICES - i - 1)); |
(MAX_DEVICES - i - 1)); |
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memmove(&mem->dev_flags[i], &mem->dev_flags[i+1], sizeof(int) * |
memmove(&mem->dev_flags[i], &mem->dev_flags[i+1], sizeof(int) * |
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(MAX_DEVICES - i - 1)); |
(MAX_DEVICES - i - 1)); |
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memmove(&mem->dev_f[i], &mem->dev_f[i+1], sizeof(void *) * |
memmove(&mem->dev_f[i], &mem->dev_f[i+1], sizeof(void *) * |
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(MAX_DEVICES - i - 1)); |
(MAX_DEVICES - i - 1)); |
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memmove(&mem->dev_f_state[i], &mem->dev_f_state[i+1], sizeof(void *) * |
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(MAX_DEVICES - i - 1)); |
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memmove(&mem->dev_dyntrans_data[i], &mem->dev_dyntrans_data[i+1], |
memmove(&mem->dev_dyntrans_data[i], &mem->dev_dyntrans_data[i+1], |
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sizeof(void *) * (MAX_DEVICES - i - 1)); |
sizeof(void *) * (MAX_DEVICES - i - 1)); |
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memmove(&mem->dev_dyntrans_write_low[i], &mem->dev_dyntrans_write_low |
memmove(&mem->dev_dyntrans_write_low[i], &mem->dev_dyntrans_write_low |
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[i+1], sizeof(void *) * (MAX_DEVICES - i - 1)); |
[i+1], sizeof(uint64_t) * (MAX_DEVICES - i - 1)); |
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memmove(&mem->dev_dyntrans_write_high[i], &mem->dev_dyntrans_write_high |
memmove(&mem->dev_dyntrans_write_high[i], &mem->dev_dyntrans_write_high |
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[i+1], sizeof(void *) * (MAX_DEVICES - i - 1)); |
[i+1], sizeof(uint64_t) * (MAX_DEVICES - i - 1)); |
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} |
} |
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/* Anonymous mmap() should return zero-filled memory, |
/* Anonymous mmap() should return zero-filled memory, |
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try malloc + memset if mmap failed. */ |
try malloc + memset if mmap failed. */ |
581 |
table[entry] = (void *) mmap(NULL, alloclen, |
table[entry] = (void *) mmap(NULL, alloclen, |
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PROT_READ | PROT_WRITE, MAP_ANON | MAP_PRIVATE, |
PROT_READ | PROT_WRITE, MAP_ANON | MAP_PRIVATE, -1, 0); |
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-1, 0); |
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if (table[entry] == NULL) { |
if (table[entry] == NULL) { |
584 |
table[entry] = malloc(alloclen); |
table[entry] = malloc(alloclen); |
585 |
if (table[entry] == NULL) { |
if (table[entry] == NULL) { |