166e63ce3Schristos /* Memory attributes support, for GDB. 266e63ce3Schristos 3*1424dfb3Schristos Copyright (C) 2001-2020 Free Software Foundation, Inc. 466e63ce3Schristos 566e63ce3Schristos This file is part of GDB. 666e63ce3Schristos 766e63ce3Schristos This program is free software; you can redistribute it and/or modify 866e63ce3Schristos it under the terms of the GNU General Public License as published by 966e63ce3Schristos the Free Software Foundation; either version 3 of the License, or 1066e63ce3Schristos (at your option) any later version. 1166e63ce3Schristos 1266e63ce3Schristos This program is distributed in the hope that it will be useful, 1366e63ce3Schristos but WITHOUT ANY WARRANTY; without even the implied warranty of 1466e63ce3Schristos MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 1566e63ce3Schristos GNU General Public License for more details. 1666e63ce3Schristos 1766e63ce3Schristos You should have received a copy of the GNU General Public License 1866e63ce3Schristos along with this program. If not, see <http://www.gnu.org/licenses/>. */ 1966e63ce3Schristos 2066e63ce3Schristos #ifndef MEMATTR_H 2166e63ce3Schristos #define MEMATTR_H 2266e63ce3Schristos 2366e63ce3Schristos enum mem_access_mode 2466e63ce3Schristos { 2566e63ce3Schristos MEM_NONE, /* Memory that is not physically present. */ 2666e63ce3Schristos MEM_RW, /* read/write */ 2766e63ce3Schristos MEM_RO, /* read only */ 2866e63ce3Schristos MEM_WO, /* write only */ 2966e63ce3Schristos 3066e63ce3Schristos /* Read/write, but special steps are required to write to it. */ 3166e63ce3Schristos MEM_FLASH 3266e63ce3Schristos }; 3366e63ce3Schristos 3466e63ce3Schristos enum mem_access_width 3566e63ce3Schristos { 3666e63ce3Schristos MEM_WIDTH_UNSPECIFIED, 3766e63ce3Schristos MEM_WIDTH_8, /* 8 bit accesses */ 3866e63ce3Schristos MEM_WIDTH_16, /* 16 " " */ 3966e63ce3Schristos MEM_WIDTH_32, /* 32 " " */ 4066e63ce3Schristos MEM_WIDTH_64 /* 64 " " */ 4166e63ce3Schristos }; 4266e63ce3Schristos 4366e63ce3Schristos /* The set of all attributes that can be set for a memory region. 4466e63ce3Schristos 4566e63ce3Schristos This structure was created so that memory attributes can be passed 4666e63ce3Schristos to target_ functions without exposing the details of memory region 4766e63ce3Schristos list, which would be necessary if these fields were simply added to 4866e63ce3Schristos the mem_region structure. 4966e63ce3Schristos 5066e63ce3Schristos FIXME: It would be useful if there was a mechanism for targets to 5166e63ce3Schristos add their own attributes. For example, the number of wait states. */ 5266e63ce3Schristos 5366e63ce3Schristos struct mem_attrib 5466e63ce3Schristos { unknownmem_attrib5507163879Schristos static mem_attrib unknown () 5607163879Schristos { 5707163879Schristos mem_attrib attrib; 5866e63ce3Schristos 5907163879Schristos attrib.mode = MEM_NONE; 6007163879Schristos 6107163879Schristos return attrib; 6207163879Schristos } 6307163879Schristos 6407163879Schristos /* read/write, read-only, or write-only */ 6507163879Schristos enum mem_access_mode mode = MEM_RW; 6607163879Schristos 6707163879Schristos enum mem_access_width width = MEM_WIDTH_UNSPECIFIED; 6866e63ce3Schristos 6966e63ce3Schristos /* enables hardware breakpoints */ 7007163879Schristos int hwbreak = 0; 7166e63ce3Schristos 7266e63ce3Schristos /* enables host-side caching of memory region data */ 7307163879Schristos int cache = 0; 7466e63ce3Schristos 7566e63ce3Schristos /* Enables memory verification. After a write, memory is re-read 7666e63ce3Schristos to verify that the write was successful. */ 7707163879Schristos int verify = 0; 7866e63ce3Schristos 7966e63ce3Schristos /* Block size. Only valid if mode == MEM_FLASH. */ 8007163879Schristos int blocksize = -1; 8166e63ce3Schristos }; 8266e63ce3Schristos 8366e63ce3Schristos struct mem_region 8466e63ce3Schristos { 8507163879Schristos /* Create a mem_region with default attributes. */ 8607163879Schristos mem_regionmem_region8707163879Schristos mem_region (CORE_ADDR lo_, CORE_ADDR hi_) 8807163879Schristos : lo (lo_), hi (hi_) 8907163879Schristos {} 9007163879Schristos 9107163879Schristos /* Create a mem_region with access mode MODE_, but otherwise default 9207163879Schristos attributes. */ 9307163879Schristos mem_regionmem_region9407163879Schristos mem_region (CORE_ADDR lo_, CORE_ADDR hi_, mem_access_mode mode_) 9507163879Schristos : lo (lo_), hi (hi_) 9607163879Schristos { 9707163879Schristos attrib.mode = mode_; 9807163879Schristos } 9907163879Schristos 10007163879Schristos /* Create a mem_region with attributes ATTRIB_. */ 10107163879Schristos mem_regionmem_region10207163879Schristos mem_region (CORE_ADDR lo_, CORE_ADDR hi_, const mem_attrib &attrib_) 10307163879Schristos : lo (lo_), hi (hi_), attrib (attrib_) 10407163879Schristos {} 10507163879Schristos 10607163879Schristos bool operator< (const mem_region &other) const 10707163879Schristos { 10807163879Schristos return this->lo < other.lo; 10907163879Schristos } 11007163879Schristos 11166e63ce3Schristos /* Lowest address in the region. */ 11266e63ce3Schristos CORE_ADDR lo; 11366e63ce3Schristos /* Address past the highest address of the region. 11466e63ce3Schristos If 0, upper bound is "infinity". */ 11566e63ce3Schristos CORE_ADDR hi; 11666e63ce3Schristos 11766e63ce3Schristos /* Item number of this memory region. */ 11807163879Schristos int number = 0; 11966e63ce3Schristos 12007163879Schristos /* Status of this memory region (enabled if true, otherwise 12166e63ce3Schristos disabled). */ 12207163879Schristos bool enabled_p = true; 12366e63ce3Schristos 12466e63ce3Schristos /* Attributes for this region. */ 12507163879Schristos mem_attrib attrib; 12666e63ce3Schristos }; 12766e63ce3Schristos 12866e63ce3Schristos extern struct mem_region *lookup_mem_region (CORE_ADDR); 12966e63ce3Schristos 13066e63ce3Schristos void invalidate_target_mem_regions (void); 13166e63ce3Schristos 13266e63ce3Schristos #endif /* MEMATTR_H */ 133