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gdb_server: gdb_memory_map() rework 

Use sector sizes instead of bank size.

Detect a gap between sectors and emit xml blocks accordingly.

Detect sector overflow over the bank size.

Change-Id: If0e0e44b0c3b93067b4d717c9c7b07c08582e57b
Signed-off-by: Tomas Vanek <vanekt@fbl.cz>
Reviewed-on: http://openocd.zylin.com/4436
Tested-by: jenkins
Reviewed-by: Matthias Welwarsky <matthias@welwarsky.de>
riscv-compliance-dev^2
Tomas Vanek 2018-02-27 09:44:07 +01:00 committed by Tim Newsome
parent 3c7fd99832
commit 5a591c9857
1 changed files with 21 additions and 17 deletions
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38
src/server/gdb_server.c
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@ -1806,7 +1806,7 @@ static int gdb_memory_map(struct connection *connection,
int offset;
int length;
char *separator;
uint32_t ram_start = 0;
target_addr_t ram_start = 0;
int i;
int target_flash_banks = 0;
@ -1821,9 +1821,6 @@ static int gdb_memory_map(struct connection *connection,
/* Sort banks in ascending order. We need to report non-flash
* memory as ram (or rather read/write) by default for GDB, since
* it has no concept of non-cacheable read/write memory (i/o etc).
*
* FIXME Most non-flash addresses are *NOT* RAM! Don't lie.
* Current versions of GDB assume unlisted addresses are RAM...
*/
banks = malloc(sizeof(struct flash_bank *)*flash_get_bank_count());
@ -1846,14 +1843,13 @@ static int gdb_memory_map(struct connection *connection,
for (i = 0; i < target_flash_banks; i++) {
int j;
unsigned sector_size = 0;
uint32_t start;
unsigned group_len = 0;
p = banks[i];
start = p->base;
if (ram_start < p->base)
xml_printf(&retval, &xml, &pos, &size,
"<memory type=\"ram\" start=\"0x%x\" "
"<memory type=\"ram\" start=\"" TARGET_ADDR_FMT "\" "
"length=\"0x%x\"/>\n",
ram_start, p->base - ram_start);
@ -1864,27 +1860,35 @@ static int gdb_memory_map(struct connection *connection,
* regions with 8KB, 32KB, and 64KB sectors; etc.
*/
for (j = 0; j < p->num_sectors; j++) {
unsigned group_len;
/* Maybe start a new group of sectors. */
if (sector_size == 0) {
if (p->sectors[j].offset + p->sectors[j].size > p->size) {
LOG_WARNING("The flash sector at offset 0x%08" PRIx32
" overflows the end of %s bank.",
p->sectors[j].offset, p->name);
LOG_WARNING("The rest of bank will not show in gdb memory map.");
break;
}
target_addr_t start;
start = p->base + p->sectors[j].offset;
xml_printf(&retval, &xml, &pos, &size,
"<memory type=\"flash\" "
"start=\"0x%x\" ",
"start=\"" TARGET_ADDR_FMT "\" ",
start);
sector_size = p->sectors[j].size;
group_len = sector_size;
} else {
group_len += sector_size; /* equal to p->sectors[j].size */
}
/* Does this finish a group of sectors?
* If not, continue an already-started group.
*/
if (j == p->num_sectors - 1)
group_len = (p->base + p->size) - start;
else if (p->sectors[j + 1].size != sector_size)
group_len = p->base + p->sectors[j + 1].offset
- start;
else
if (j < p->num_sectors - 1
&& p->sectors[j + 1].size == sector_size
&& p->sectors[j + 1].offset == p->sectors[j].offset + sector_size
&& p->sectors[j + 1].offset + p->sectors[j + 1].size <= p->size)
continue;
xml_printf(&retval, &xml, &pos, &size,
@ -1902,7 +1906,7 @@ static int gdb_memory_map(struct connection *connection,
if (ram_start != 0)
xml_printf(&retval, &xml, &pos, &size,
"<memory type=\"ram\" start=\"0x%x\" "
"<memory type=\"ram\" start=\"" TARGET_ADDR_FMT "\" "
"length=\"0x%x\"/>\n",
ram_start, 0-ram_start);
/* ELSE a flash chip could be at the very end of the 32 bit address
@ -1910,11 +1914,11 @@ static int gdb_memory_map(struct connection *connection,
*/
free(banks);
banks = NULL;
xml_printf(&retval, &xml, &pos, &size, "</memory-map>\n");
if (retval != ERROR_OK) {
free(xml);
gdb_error(connection, retval);
return retval;
}