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openocd/src/rtos/rtos.c

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/***************************************************************************
* Copyright (C) 2011 by Broadcom Corporation *
* Evan Hunter - ehunter@broadcom.com *
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
* *
* This program is distributed in the hope that it will be useful, *
* but WITHOUT ANY WARRANTY; without even the implied warranty of *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
* GNU General Public License for more details. *
* *
* You should have received a copy of the GNU General Public License *
* along with this program; if not, write to the *
* Free Software Foundation, Inc., *
* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
***************************************************************************/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "rtos.h"
#include "target/target.h"
#include "helper/log.h"
#include "server/gdb_server.h"
static long long current_threadid = -1;
static void hex_to_str( char* dst, char * hex_src );
static int str_to_hex( char* hex_dst, char* src );
/* RTOSs */
extern struct rtos_type FreeRTOS_rtos;
extern struct rtos_type ThreadX_rtos;
static struct rtos_type *rtos_types[] =
{
&ThreadX_rtos,
&FreeRTOS_rtos,
NULL
};
int rtos_create(Jim_GetOptInfo *goi, struct target * target)
{
int x;
char *cp;
if (! goi->isconfigure) {
if (goi->argc != 0) {
if (goi->argc != 0) {
Jim_WrongNumArgs(goi->interp,
goi->argc, goi->argv,
"NO PARAMS");
return JIM_ERR;
}
Jim_SetResultString(goi->interp,
target_type_name(target), -1);
}
}
if (target->rtos) {
free((void *)(target->rtos));
}
// e = Jim_GetOpt_String(goi, &cp, NULL);
// target->rtos = strdup(cp);
Jim_GetOpt_String(goi, &cp, NULL);
/* now does target type exist */
if ( 0 == strcmp( cp, "auto") )
{
// auto detection of RTOS
target->rtos_auto_detect = true;
x = 0;
}
else
{
for (x = 0 ; rtos_types[x] ; x++) {
if (0 == strcmp(cp, rtos_types[x]->name)) {
/* found */
break;
}
}
if (rtos_types[x] == NULL) {
Jim_SetResultFormatted(goi->interp, "Unknown rtos type %s, try one of ", cp);
for (x = 0 ; rtos_types[x] ; x++) {
if (rtos_types[x + 1]) {
Jim_AppendStrings(goi->interp,
Jim_GetResult(goi->interp),
rtos_types[x]->name,
", ", NULL);
} else {
Jim_AppendStrings(goi->interp,
Jim_GetResult(goi->interp),
" or ",
rtos_types[x]->name,NULL);
}
}
return JIM_ERR;
}
}
/* Create it */
target->rtos = calloc(1,sizeof(struct rtos));
target->rtos->type = rtos_types[x];
target->rtos->current_thread = 0;
target->rtos->symbols = NULL;
target->rtos->target = target;
if ( 0 != strcmp( cp, "auto") )
{
target->rtos->type->create( target );
}
return JIM_OK;
}
int gdb_thread_packet(struct connection *connection, struct target *target, char *packet, int packet_size)
{
if (strstr(packet, "qP"))
{
#define TAG_THREADID 1 /* Echo the thread identifier */
#define TAG_EXISTS 2 /* Is this process defined enough to
fetch registers and its stack */
#define TAG_DISPLAY 4 /* A short thing maybe to put on a window */
#define TAG_THREADNAME 8 /* string, maps 1-to-1 with a thread is */
#define TAG_MOREDISPLAY 16 /* Whatever the kernel wants to say about */
// TODO: need to scanf the mode variable (or it with the tags), and the threadid
unsigned long mode;
threadid_t threadid = 0;
struct thread_detail* detail;
sscanf(packet, "qP%8lx%16" SCNx64, &mode, &threadid);
int found = -1;
if ((target->rtos != NULL) && (target->rtos->thread_details
!= NULL)) {
int thread_num;
for (thread_num = 0; thread_num
< target->rtos->thread_count; thread_num++) {
if (target->rtos->thread_details[thread_num].threadid
== threadid) {
if (target->rtos->thread_details[thread_num].exists) {
found = thread_num;
}
}
}
}
if (found == -1) {
gdb_put_packet(connection, "E01", 3); // thread not found
return ERROR_OK;
}
detail = &target->rtos->thread_details[found];
if ( detail->display_str != NULL )
{
mode &= TAG_DISPLAY;
}
if ( detail->thread_name_str != NULL )
{
mode &= TAG_THREADNAME;
}
if ( detail->extra_info_str != NULL )
{
mode &= TAG_MOREDISPLAY;
}
mode &= TAG_THREADID | TAG_EXISTS;
char thread_str[1000];
sprintf(thread_str, "%08lx", mode);
sprintf(thread_str, "%016" PRIx64, threadid);
if (mode & TAG_THREADID) {
sprintf(thread_str, "%08" PRIx32 "10%016" PRIx64, TAG_THREADID, threadid);
}
if (mode & TAG_EXISTS) {
sprintf(thread_str, "%08" PRIx32 "08%08" PRIx32, TAG_EXISTS, (detail->exists==true)?1:0);
}
if (mode & TAG_DISPLAY) {
sprintf(thread_str, "%08" PRIx32 "%02x%s", TAG_DISPLAY, (unsigned char)strlen(detail->display_str), detail->display_str );
}
if (mode & TAG_MOREDISPLAY) {
sprintf(thread_str, "%08" PRIx32 "%02x%s", TAG_MOREDISPLAY, (unsigned char)strlen(detail->extra_info_str), detail->extra_info_str );
}
if (mode & TAG_THREADNAME) {
sprintf(thread_str, "%08" PRIx32 "%02x%s", TAG_THREADNAME, (unsigned char)strlen(detail->thread_name_str), detail->thread_name_str );
}
//gdb_put_packet(connection, tmpstr, sizeof(tmpstr)-1);
gdb_put_packet(connection, thread_str, strlen(thread_str));
// gdb_put_packet(connection, "", 0);
// gdb_put_packet(connection, "OK", 2); // all threads alive
return ERROR_OK;
}
else if (strstr(packet, "qThreadExtraInfo,"))
{
if ((target->rtos != NULL) && (target->rtos->thread_details != NULL) && (target->rtos->thread_count != 0))
{
threadid_t threadid = 0;
int found = -1;
sscanf(packet, "qThreadExtraInfo,%" SCNx64, &threadid );
if ((target->rtos != NULL) && (target->rtos->thread_details
!= NULL)) {
int thread_num;
for (thread_num = 0; thread_num
< target->rtos->thread_count; thread_num++) {
if (target->rtos->thread_details[thread_num].threadid
== threadid) {
if (target->rtos->thread_details[thread_num].exists) {
found = thread_num;
}
}
}
}
if (found == -1) {
gdb_put_packet(connection, "E01", 3); // thread not found
return ERROR_OK;
}
struct thread_detail* detail = &target->rtos->thread_details[found];
int str_size = 0;
if ( detail->display_str != NULL )
{
str_size += strlen(detail->display_str);
}
if ( detail->thread_name_str != NULL )
{
str_size += strlen(detail->thread_name_str);
}
if ( detail->extra_info_str != NULL )
{
str_size += strlen(detail->extra_info_str);
}
char * tmp_str = (char*) malloc( str_size + 7 );
char* tmp_str_ptr = tmp_str;
if ( detail->display_str != NULL )
{
tmp_str_ptr += sprintf( tmp_str_ptr, "%s", detail->display_str );
}
if ( detail->thread_name_str != NULL )
{
if ( tmp_str_ptr != tmp_str )
{
tmp_str_ptr += sprintf( tmp_str_ptr, " : " );
}
tmp_str_ptr += sprintf( tmp_str_ptr, "%s", detail->thread_name_str );
}
if ( detail->extra_info_str != NULL )
{
if ( tmp_str_ptr != tmp_str )
{
tmp_str_ptr += sprintf( tmp_str_ptr, " : " );
}
tmp_str_ptr += sprintf( tmp_str_ptr, " : %s", detail->extra_info_str );
}
char * hex_str = (char*) malloc( strlen(tmp_str)*2 +1 );
str_to_hex( hex_str, tmp_str );
gdb_put_packet(connection, hex_str, strlen(hex_str));
free(hex_str);
free(tmp_str);
return ERROR_OK;
}
gdb_put_packet(connection, "", 0);
return ERROR_OK;
}
else if (strstr(packet, "qSymbol"))
{
if ( target->rtos != NULL )
{
int next_symbol_num = -1;
if (target->rtos->symbols == NULL)
{
target->rtos->type->get_symbol_list_to_lookup( &target->rtos->symbols );
}
if (0 == strcmp( "qSymbol::", packet ) )
{
// first query -
next_symbol_num = 0;
}
else
{
long long value = 0;
char * hex_name_str = malloc( strlen(packet));
char * name_str;
int symbol_num;
char* found = strstr( packet, "qSymbol::" );
int numconv;
if (0 == found )
{
numconv =sscanf(packet, "qSymbol:%" SCNx64 ":%s", &value, hex_name_str);
}
else
{
// No value returned by GDB - symbol was not found
numconv =sscanf(packet, "qSymbol::%s", hex_name_str);
}
name_str = (char*) malloc( 1+ strlen(hex_name_str) / 2 );
hex_to_str( name_str, hex_name_str );
symbol_num = 0;
while ( ( target->rtos->symbols[ symbol_num ].symbol_name != NULL ) && ( 0 != strcmp( target->rtos->symbols[ symbol_num ].symbol_name, name_str ) ) )
{
symbol_num++;
}
if ( target->rtos->symbols[ symbol_num ].symbol_name == NULL )
{
LOG_OUTPUT("ERROR: unknown symbol\r\n");
gdb_put_packet(connection, "OK", 2);
return ERROR_OK;
}
target->rtos->symbols[ symbol_num ].address = value;
next_symbol_num = symbol_num+1;
free( hex_name_str );
free( name_str );
}
int symbols_done = 0;
if ( target->rtos->symbols[ next_symbol_num ].symbol_name == NULL )
{
if ( ( target->rtos_auto_detect == false ) ||
( 1 == target->rtos->type->detect_rtos( target ) ) )
{
// Found correct RTOS or not autodetecting
if ( target->rtos_auto_detect == true )
{
LOG_OUTPUT( "Auto-detected RTOS: %s\r\n",target->rtos->type->name );
}
symbols_done = 1;
}
else
{
// Auto detecting RTOS and currently not found
if( 1 != rtos_try_next( target ) )
{
// No more RTOS's to try
symbols_done = 1;
}
else
{
next_symbol_num = 0;
target->rtos->type->get_symbol_list_to_lookup( &target->rtos->symbols );
}
}
}
if ( symbols_done == 1 )
{
target->rtos_auto_detect = false;
target->rtos->type->create( target );
target->rtos->type->update_threads(target->rtos);
// No more symbols needed
gdb_put_packet(connection, "OK", 2);
return ERROR_OK;
}
else
{
char* symname = target->rtos->symbols[ next_symbol_num ].symbol_name;
char qsymstr[] = "qSymbol:";
char * opstring = (char*)malloc(sizeof(qsymstr)+strlen(symname)*2+1);
char * posptr = opstring;
posptr += sprintf( posptr, "%s", qsymstr );
str_to_hex( posptr, symname );
gdb_put_packet(connection, opstring, strlen(opstring));
free(opstring);
return ERROR_OK;
}
}
gdb_put_packet(connection, "OK", 2);
return ERROR_OK;
}
else if (strstr(packet, "qfThreadInfo"))
{
int i;
if ( ( target->rtos != NULL ) && ( target->rtos->thread_count != 0 ) )
{
char* out_str = (char*) malloc(17 * target->rtos->thread_count + 5);
char* tmp_str = out_str;
tmp_str += sprintf(tmp_str, "m");
for (i = 0; i < target->rtos->thread_count; i++) {
if (i != 0) {
tmp_str += sprintf(tmp_str, ",");
}
tmp_str += sprintf(tmp_str, "%016" PRIx64,
target->rtos->thread_details[i].threadid);
}
tmp_str[0] = 0;
gdb_put_packet(connection, out_str, strlen(out_str));
}
else
{
gdb_put_packet(connection, "", 0);
}
return ERROR_OK;
}
else if (strstr(packet, "qsThreadInfo"))
{
gdb_put_packet(connection, "l", 1);
return ERROR_OK;
}
else if (strstr(packet, "qAttached"))
{
gdb_put_packet(connection, "1", 1);
return ERROR_OK;
}
else if (strstr(packet, "qOffsets"))
{
char offsets[] = "Text=0;Data=0;Bss=0";
gdb_put_packet(connection, offsets, sizeof(offsets)-1);
return ERROR_OK;
}
else if (strstr(packet, "qC"))
{
gdb_put_packet(connection, "QC0", 3);
return ERROR_OK;
}
else if ( packet[0] == 'T' ) // Is thread alive?
{
threadid_t threadid;
int found = -1;
sscanf(packet, "T%" SCNx64, &threadid);
if ((target->rtos != NULL) && (target->rtos->thread_details
!= NULL)) {
int thread_num;
for (thread_num = 0; thread_num
< target->rtos->thread_count; thread_num++) {
if (target->rtos->thread_details[thread_num].threadid
== threadid) {
if (target->rtos->thread_details[thread_num].exists) {
found = thread_num;
}
}
}
}
if (found != -1) {
gdb_put_packet(connection, "OK", 2); // thread alive
} else {
gdb_put_packet(connection, "E01", 3); // thread not found
}
}
else if ( packet[0] == 'H') // Set current thread ( 'c' for step and continue, 'g' for all other operations )
{
if (packet[1] == 'g')
{
sscanf(packet, "Hg%16" SCNx64, &current_threadid);
}
gdb_put_packet(connection, "OK", 2);
}
return GDB_THREAD_PACKET_NOT_CONSUMED;
}
int rtos_get_gdb_reg_list(struct connection *connection, struct target *target, struct reg **reg_list[], int *reg_list_size)
{
if ( ( target->rtos != NULL ) &&
( current_threadid != 1 ) &&
( current_threadid != 0 ) &&
( current_threadid != target->rtos->current_thread ) )
{
char * hex_reg_list;
target->rtos->type->get_thread_reg_list( target->rtos, current_threadid, &hex_reg_list );
if ( hex_reg_list != NULL )
{
gdb_put_packet(connection, hex_reg_list, strlen(hex_reg_list));
free(hex_reg_list);
return ERROR_OK;
}
}
return ERROR_FAIL;
}
int rtos_generic_stack_read( struct target * target, const struct rtos_register_stacking* stacking, long long stack_ptr, char ** hex_reg_list )
{
int list_size = 0;
char * tmp_str_ptr;
long long new_stack_ptr;
int i;
int retval;
if ( stack_ptr == 0)
{
LOG_OUTPUT("Error: null stack pointer in thread\r\n");
return -5;
}
// Read the stack
uint8_t * stack_data = (uint8_t*) malloc( stacking->stack_registers_size );
uint32_t address = stack_ptr;
if ( stacking->stack_growth_direction == 1 )
{
address -= stacking->stack_registers_size;
}
retval = target_read_buffer( target, stack_ptr, stacking->stack_registers_size, stack_data);
if ( retval != ERROR_OK )
{
LOG_OUTPUT("Error reading stack frame from FreeRTOS thread\r\n");
return retval;
}
/*
LOG_OUTPUT("Stack Data :");
for(i = 0; i < stacking->stack_registers_size; i++ )
{
LOG_OUTPUT("%02X",stack_data[i]);
}
LOG_OUTPUT("\r\n");
*/
for( i = 0; i < stacking->num_output_registers; i++ )
{
list_size += stacking->register_offsets[i].width_bits/8;
}
*hex_reg_list = (char*)malloc( list_size*2 +1 );
tmp_str_ptr = *hex_reg_list;
new_stack_ptr = stack_ptr + stacking->stack_growth_direction * stacking->stack_registers_size;
for( i = 0; i < stacking->num_output_registers; i++ )
{
int j;
for ( j = 0; j < stacking->register_offsets[i].width_bits/8; j++ )
{
if ( stacking->register_offsets[i].offset == -1 )
{
tmp_str_ptr += sprintf( tmp_str_ptr, "%02x", 0 );
}
else if ( stacking->register_offsets[i].offset == -2 )
{
tmp_str_ptr += sprintf( tmp_str_ptr, "%02x", ((uint8_t*)&new_stack_ptr)[j] );
}
else
{
tmp_str_ptr += sprintf( tmp_str_ptr,"%02x", stack_data[ stacking->register_offsets[i].offset + j ] );
}
}
}
// LOG_OUTPUT("Output register string: %s\r\n", *hex_reg_list);
return ERROR_OK;
}
int rtos_try_next( struct target * target )
{
int x;
if ( target->rtos == NULL )
{
return -1;
}
for (x = 0 ; rtos_types[x] ; x++) {
if (target->rtos->type == rtos_types[x] ) {
/* found */
if ( rtos_types[x+1] != NULL )
{
target->rtos->type = rtos_types[x+1];
if ( target->rtos->symbols != NULL )
{
free( target->rtos->symbols );
}
return 1;
}
else
{
// No more rtos types
return 0;
}
}
}
return 0;
}
static void hex_to_str( char* dst, char * hex_src )
{
int src_pos = 0;
int dst_pos = 0;
while ( hex_src[src_pos] != '\x00' )
{
char hex_char = hex_src[src_pos];
char hex_digit_val = (hex_char>='a')?hex_char-'a'+10:(hex_char>='A')?hex_char-'A'+10:hex_char-'0';
if ( 0 == (src_pos & 0x01) )
{
dst[dst_pos] = hex_digit_val;
dst[dst_pos+1] = 0;
}
else
{
((unsigned char*)dst)[dst_pos] <<= 4;
((unsigned char*)dst)[dst_pos] += hex_digit_val;
dst_pos++;
}
src_pos++;
}
}
static int str_to_hex( char* hex_dst, char* src )
{
char * posptr = hex_dst;
unsigned i;
for( i = 0; i < strlen(src); i++)
{
posptr += sprintf( posptr, "%02x", (unsigned char)src[i] );
}
return (posptr-hex_dst);
}
int rtos_update_threads( struct target* target )
{
if ((target->rtos != NULL) && (target->rtos->type != NULL))
{
target->rtos->type->update_threads(target->rtos);
}
return ERROR_OK;
}
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