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rtos: uCOS-III: split struct ucos_iii_params 

The static analyser 'sparse' complains about using sizeof() on a
struct that has variable size:
	src/rtos/uCOS-III.c:267:32: warning: using sizeof on a flexible structure
	src/rtos/uCOS-III.c:269:41: warning: using sizeof on a flexible structure
	src/rtos/uCOS-III.c:275:66: warning: using sizeof on a flexible structure
The struct ucos_iii_params contains either constants values for
different target type and variable fields. The last field is an
variable size array, always allocated to UCOS_III_MAX_THREADS
items. It's not practical to fix this size because we would get
too huge initialization in data segment.

Split away from struct ucos_iii_params all the variable fields and
put them in struct ucos_iii_private. Add in the new struct a
pointer to the selected element of ucos_iii_params_list[] and fix
the size of array threads[] to its maximum value; this would be
allocated at run-time, avoiding impacts to data segment.

Change-Id: I569011a257783d35a8795adbda06e942b4157f2a
Signed-off-by: Antonio Borneo <borneo.antonio@gmail.com>
Reviewed-on: https://review.openocd.org/c/openocd/+/7678
Tested-by: jenkins
This commit is contained in:
Antonio Borneo 2023-05-07 15:50:26 +02:00
parent aaa67f733d
commit 17f86fdedf
1 changed files with 35 additions and 47 deletions
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82
src/rtos/uCOS-III.c
View File

@ -29,6 +29,12 @@
struct ucos_iii_params {
const char *target_name;
const unsigned char pointer_width;
size_t threadid_start;
const struct rtos_register_stacking *stacking_info;
};
struct ucos_iii_private {
const struct ucos_iii_params *params;
symbol_address_t thread_stack_offset;
symbol_address_t thread_name_offset;
symbol_address_t thread_state_offset;
@ -36,40 +42,22 @@ struct ucos_iii_params {
symbol_address_t thread_prev_offset;
symbol_address_t thread_next_offset;
bool thread_offsets_updated;
size_t threadid_start;
const struct rtos_register_stacking *stacking_info;
size_t num_threads;
symbol_address_t threads[];
symbol_address_t threads[UCOS_III_MAX_THREADS];
};
static const struct ucos_iii_params ucos_iii_params_list[] = {
{
"cortex_m", /* target_name */
sizeof(uint32_t), /* pointer_width */
0, /* thread_stack_offset */
0, /* thread_name_offset */
0, /* thread_state_offset */
0, /* thread_priority_offset */
0, /* thread_prev_offset */
0, /* thread_next_offset */
false, /* thread_offsets_updated */
1, /* threadid_start */
&rtos_ucos_iii_cortex_m_stacking, /* stacking_info */
0, /* num_threads */
.target_name = "cortex_m",
.pointer_width = sizeof(uint32_t),
.threadid_start = 1,
.stacking_info = &rtos_ucos_iii_cortex_m_stacking,
},
{
"esirisc", /* target_name */
sizeof(uint32_t), /* pointer_width */
0, /* thread_stack_offset */
0, /* thread_name_offset */
0, /* thread_state_offset */
0, /* thread_priority_offset */
0, /* thread_prev_offset */
0, /* thread_next_offset */
false, /* thread_offsets_updated */
1, /* threadid_start */
&rtos_ucos_iii_esi_risc_stacking, /* stacking_info */
0, /* num_threads */
.target_name = "esirisc",
.pointer_width = sizeof(uint32_t),
.threadid_start = 1,
.stacking_info = &rtos_ucos_iii_esi_risc_stacking,
},
};
@ -118,7 +106,7 @@ static const char * const ucos_iii_thread_state_list[] = {
static int ucos_iii_find_or_create_thread(struct rtos *rtos, symbol_address_t thread_address,
threadid_t *threadid)
{
struct ucos_iii_params *params = rtos->rtos_specific_params;
struct ucos_iii_private *params = rtos->rtos_specific_params;
size_t thread_index;
for (thread_index = 0; thread_index < params->num_threads; thread_index++)
@ -133,17 +121,17 @@ static int ucos_iii_find_or_create_thread(struct rtos *rtos, symbol_address_t th
params->threads[thread_index] = thread_address;
params->num_threads++;
found:
*threadid = thread_index + params->threadid_start;
*threadid = thread_index + params->params->threadid_start;
return ERROR_OK;
}
static int ucos_iii_find_thread_address(struct rtos *rtos, threadid_t threadid,
symbol_address_t *thread_address)
{
struct ucos_iii_params *params = rtos->rtos_specific_params;
struct ucos_iii_private *params = rtos->rtos_specific_params;
size_t thread_index;
thread_index = threadid - params->threadid_start;
thread_index = threadid - params->params->threadid_start;
if (thread_index >= params->num_threads) {
LOG_ERROR("uCOS-III: failed to find thread address");
return ERROR_FAIL;
@ -155,7 +143,7 @@ static int ucos_iii_find_thread_address(struct rtos *rtos, threadid_t threadid,
static int ucos_iii_find_last_thread_address(struct rtos *rtos, symbol_address_t *thread_address)
{
struct ucos_iii_params *params = rtos->rtos_specific_params;
struct ucos_iii_private *params = rtos->rtos_specific_params;
int retval;
/* read the thread list head */
@ -163,7 +151,7 @@ static int ucos_iii_find_last_thread_address(struct rtos *rtos, symbol_address_t
retval = target_read_memory(rtos->target,
rtos->symbols[UCOS_III_VAL_OS_TASK_DBG_LIST_PTR].address,
params->pointer_width,
params->params->pointer_width,
1,
(void *)&thread_list_address);
if (retval != ERROR_OK) {
@ -177,7 +165,7 @@ static int ucos_iii_find_last_thread_address(struct rtos *rtos, symbol_address_t
retval = target_read_memory(rtos->target,
thread_list_address + params->thread_next_offset,
params->pointer_width,
params->params->pointer_width,
1,
(void *)&thread_list_address);
if (retval != ERROR_OK) {
@ -191,7 +179,7 @@ static int ucos_iii_find_last_thread_address(struct rtos *rtos, symbol_address_t
static int ucos_iii_update_thread_offsets(struct rtos *rtos)
{
struct ucos_iii_params *params = rtos->rtos_specific_params;
struct ucos_iii_private *params = rtos->rtos_specific_params;
if (params->thread_offsets_updated)
return ERROR_OK;
@ -231,7 +219,7 @@ static int ucos_iii_update_thread_offsets(struct rtos *rtos)
int retval = target_read_memory(rtos->target,
rtos->symbols[thread_offset_map->symbol_value].address,
params->pointer_width,
params->params->pointer_width,
1,
(void *)thread_offset_map->thread_offset);
if (retval != ERROR_OK) {
@ -252,7 +240,7 @@ static bool ucos_iii_detect_rtos(struct target *target)
static int ucos_iii_reset_handler(struct target *target, enum target_reset_mode reset_mode, void *priv)
{
struct ucos_iii_params *params = target->rtos->rtos_specific_params;
struct ucos_iii_private *params = target->rtos->rtos_specific_params;
params->thread_offsets_updated = false;
params->num_threads = 0;
@ -262,17 +250,17 @@ static int ucos_iii_reset_handler(struct target *target, enum target_reset_mode
static int ucos_iii_create(struct target *target)
{
struct ucos_iii_params *params;
struct ucos_iii_private *params;
for (size_t i = 0; i < ARRAY_SIZE(ucos_iii_params_list); i++)
if (strcmp(ucos_iii_params_list[i].target_name, target->type->name) == 0) {
params = malloc(sizeof(*params) + (UCOS_III_MAX_THREADS * sizeof(*params->threads)));
params = calloc(1, sizeof(*params));
if (!params) {
LOG_ERROR("uCOS-III: out of memory");
return ERROR_FAIL;
}
memcpy(params, &ucos_iii_params_list[i], sizeof(ucos_iii_params_list[i]));
params->params = &ucos_iii_params_list[i];
target->rtos->rtos_specific_params = (void *)params;
target_register_reset_callback(ucos_iii_reset_handler, NULL);
@ -286,7 +274,7 @@ static int ucos_iii_create(struct target *target)
static int ucos_iii_update_threads(struct rtos *rtos)
{
struct ucos_iii_params *params = rtos->rtos_specific_params;
struct ucos_iii_private *params = rtos->rtos_specific_params;
int retval;
if (!rtos->symbols) {
@ -340,7 +328,7 @@ static int ucos_iii_update_threads(struct rtos *rtos)
retval = target_read_memory(rtos->target,
rtos->symbols[UCOS_III_VAL_OS_TCB_CUR_PTR].address,
params->pointer_width,
params->params->pointer_width,
1,
(void *)&current_thread_address);
if (retval != ERROR_OK) {
@ -396,7 +384,7 @@ static int ucos_iii_update_threads(struct rtos *rtos)
retval = target_read_memory(rtos->target,
thread_address + params->thread_name_offset,
params->pointer_width,
params->params->pointer_width,
1,
(void *)&thread_name_address);
if (retval != ERROR_OK) {
@ -450,7 +438,7 @@ static int ucos_iii_update_threads(struct rtos *rtos)
/* read previous thread address */
retval = target_read_memory(rtos->target,
thread_address + params->thread_prev_offset,
params->pointer_width,
params->params->pointer_width,
1,
(void *)&thread_address);
if (retval != ERROR_OK) {
@ -465,7 +453,7 @@ static int ucos_iii_update_threads(struct rtos *rtos)
static int ucos_iii_get_thread_reg_list(struct rtos *rtos, threadid_t threadid,
struct rtos_reg **reg_list, int *num_regs)
{
struct ucos_iii_params *params = rtos->rtos_specific_params;
struct ucos_iii_private *params = rtos->rtos_specific_params;
int retval;
/* find thread address for threadid */
@ -482,7 +470,7 @@ static int ucos_iii_get_thread_reg_list(struct rtos *rtos, threadid_t threadid,
retval = target_read_memory(rtos->target,
thread_address + params->thread_stack_offset,
params->pointer_width,
params->params->pointer_width,
1,
(void *)&stack_address);
if (retval != ERROR_OK) {
@ -491,7 +479,7 @@ static int ucos_iii_get_thread_reg_list(struct rtos *rtos, threadid_t threadid,
}
return rtos_generic_stack_read(rtos->target,
params->stacking_info,
params->params->stacking_info,
stack_address,
reg_list,
num_regs);