gdb_server: support gdb target description 82/1382/9
authorHsiangkai Wang <hsiangkai@gmail.com>
Tue, 7 May 2013 13:43:35 +0000 (21:43 +0800)
committerSpencer Oliver <spen@spen-soft.co.uk>
Wed, 7 Aug 2013 21:00:40 +0000 (21:00 +0000)
* Add a parameter in .get_gdb_reg_list() to return different
  register lists as generating target description.
* Modify STRUCT REG to let gdb generate target description
  according to register information.

The modified structure of register is
struct reg {
        const char *name;
        uint32_t number;  /* for regnum="num" */
        struct reg_feature *feature;  /* for register group feature name */
        bool caller_save;  /* for save-restore="yes|no" */
        void *value;
        bool dirty;
        bool valid;
        bool exist;
        uint32_t size;
        struct reg_data_type *reg_data_type;  /* for type="type" */
        const char *group;  /* for group="general|float|vector" */
        void *arch_info;
        const struct reg_arch_type *type;
};

Change-Id: I2096b67adf94518ba0b8b23d8c6a9f64ad7932b8
Signed-off-by: Hsiangkai Wang <hsiangkai@gmail.com>
Reviewed-on: http://openocd.zylin.com/1382
Tested-by: jenkins
Reviewed-by: Franck Jullien <franck.jullien@gmail.com>
Reviewed-by: Spencer Oliver <spen@spen-soft.co.uk>
Reviewed-by: Andreas Fritiofson <andreas.fritiofson@gmail.com>
16 files changed:
src/rtos/linux.c
src/server/gdb_server.c
src/target/arm.h
src/target/armv4_5.c
src/target/armv7m.c
src/target/armv7m.h
src/target/avr32_ap7k.c
src/target/dsp563xx.c
src/target/mips32.c
src/target/mips32.h
src/target/nds32.c
src/target/nds32.h
src/target/register.h
src/target/target.c
src/target/target.h
src/target/target_type.h

index 0fc7635..80d84d7 100644 (file)
@@ -226,7 +226,8 @@ static int linux_os_thread_reg_list(struct rtos *rtos,
                /*LOG_INFO("thread %lx current on core %x",thread_id,
                 * target->coreid);*/
                retval =
-                       target_get_gdb_reg_list(target, &reg_list, &reg_list_size);
+                       target_get_gdb_reg_list(target, &reg_list, &reg_list_size,
+                                       REG_CLASS_GENERAL);
 
                if (retval != ERROR_OK)
                        return retval;
@@ -498,7 +499,7 @@ int get_current(struct target *target, int create)
                int retval;
 
                if (target_get_gdb_reg_list(head->target, &reg_list,
-                               &reg_list_size) != ERROR_OK) {
+                               &reg_list_size, REG_CLASS_GENERAL) != ERROR_OK) {
                        free(buffer);
                        return ERROR_TARGET_FAILURE;
                }
index e17ccff..beeeedc 100644 (file)
  *   Copyright (C) ST-Ericsson SA 2011                                     *
  *   michel.jaouen@stericsson.com : smp minimum support                    *
  *                                                                         *
+ *   Copyright (C) 2013 Andes Technology                                   *
+ *   Hsiangkai Wang <hkwang@andestech.com>                                 *
+ *                                                                         *
+ *   Copyright (C) 2013 Franck Jullien                                     *
+ *   elec4fun@gmail.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     *
@@ -114,6 +120,11 @@ static int gdb_flash_program = 1;
  */
 static int gdb_report_data_abort;
 
+/* set if we are sending target descriptions to gdb
+ * via qXfer:features:read packet */
+/* disabled by default */
+static int gdb_use_target_description;
+
 static int gdb_last_signal(struct target *target)
 {
        switch (target->debug_reason) {
@@ -968,7 +979,8 @@ static int gdb_get_registers_packet(struct connection *connection,
        if ((target->rtos != NULL) && (ERROR_OK == rtos_get_gdb_reg_list(connection)))
                return ERROR_OK;
 
-       retval = target_get_gdb_reg_list(target, &reg_list, &reg_list_size);
+       retval = target_get_gdb_reg_list(target, &reg_list, &reg_list_size,
+                       REG_CLASS_GENERAL);
        if (retval != ERROR_OK)
                return gdb_error(connection, retval);
 
@@ -1027,7 +1039,8 @@ static int gdb_set_registers_packet(struct connection *connection,
                return ERROR_SERVER_REMOTE_CLOSED;
        }
 
-       retval = target_get_gdb_reg_list(target, &reg_list, &reg_list_size);
+       retval = target_get_gdb_reg_list(target, &reg_list, &reg_list_size,
+                       REG_CLASS_GENERAL);
        if (retval != ERROR_OK)
                return gdb_error(connection, retval);
 
@@ -1072,7 +1085,8 @@ static int gdb_get_register_packet(struct connection *connection,
        LOG_DEBUG("-");
 #endif
 
-       retval = target_get_gdb_reg_list(target, &reg_list, &reg_list_size);
+       retval = target_get_gdb_reg_list(target, &reg_list, &reg_list_size,
+                       REG_CLASS_ALL);
        if (retval != ERROR_OK)
                return gdb_error(connection, retval);
 
@@ -1109,7 +1123,8 @@ static int gdb_set_register_packet(struct connection *connection,
 
        LOG_DEBUG("-");
 
-       retval = target_get_gdb_reg_list(target, &reg_list, &reg_list_size);
+       retval = target_get_gdb_reg_list(target, &reg_list, &reg_list_size,
+                       REG_CLASS_ALL);
        if (retval != ERROR_OK)
                return gdb_error(connection, retval);
 
@@ -1670,6 +1685,331 @@ static int gdb_memory_map(struct connection *connection,
        return ERROR_OK;
 }
 
+static const char *gdb_get_reg_type_name(enum reg_type type)
+{
+       switch (type) {
+               case REG_TYPE_INT8:
+                       return "int8";
+               case REG_TYPE_INT16:
+                       return "int16";
+               case REG_TYPE_INT32:
+                       return "int32";
+               case REG_TYPE_INT64:
+                       return "int64";
+               case REG_TYPE_INT128:
+                       return "int128";
+               case REG_TYPE_UINT8:
+                       return "uint8";
+               case REG_TYPE_UINT16:
+                       return "uint16";
+               case REG_TYPE_UINT32:
+                       return "uint32";
+               case REG_TYPE_UINT64:
+                       return "uint64";
+               case REG_TYPE_UINT128:
+                       return "uint128";
+               case REG_TYPE_CODE_PTR:
+                       return "code_ptr";
+               case REG_TYPE_DATA_PTR:
+                       return "data_ptr";
+               case REG_TYPE_IEEE_SINGLE:
+                       return "ieee_single";
+               case REG_TYPE_IEEE_DOUBLE:
+                       return "ieee_double";
+               case REG_TYPE_ARCH_DEFINED:
+                       return "int"; /* return arbitrary string to avoid compile warning. */
+       }
+
+       return "int"; /* "int" as default value */
+}
+
+static int gdb_generate_reg_type_description(struct target *target,
+               char **tdesc, int *pos, int *size, struct reg_data_type *type)
+{
+       int retval = ERROR_OK;
+
+       if (type->type_class == REG_TYPE_CLASS_VECTOR) {
+               /* <vector id="id" type="type" count="count"/> */
+               xml_printf(&retval, tdesc, pos, size,
+                               "<vector id=\"%s\" type=\"%s\" count=\"%d\"/>\n",
+                               type->id, type->reg_type_vector->type->id,
+                               type->reg_type_vector->count);
+
+       } else if (type->type_class == REG_TYPE_CLASS_UNION) {
+               /* <union id="id">
+                *  <field name="name" type="type"/> ...
+                * </union> */
+               xml_printf(&retval, tdesc, pos, size,
+                               "<union id=\"%s\">\n",
+                               type->id);
+
+               struct reg_data_type_union_field *field;
+               field = type->reg_type_union->fields;
+               while (field != NULL) {
+                       xml_printf(&retval, tdesc, pos, size,
+                                       "<field name=\"%s\" type=\"%s\"/>\n",
+                                       field->name, field->type->id);
+
+                       field = field->next;
+               }
+
+               xml_printf(&retval, tdesc, pos, size,
+                               "</union>\n");
+
+       } else if (type->type_class == REG_TYPE_CLASS_STRUCT) {
+               struct reg_data_type_struct_field *field;
+               field = type->reg_type_struct->fields;
+
+               if (field->use_bitfields) {
+                       /* <struct id="id" size="size">
+                        *  <field name="name" start="start" end="end"/> ...
+                        * </struct> */
+                       xml_printf(&retval, tdesc, pos, size,
+                                       "<struct id=\"%s\" size=\"%d\">\n",
+                                       type->id, type->reg_type_struct->size);
+                       while (field != NULL) {
+                               xml_printf(&retval, tdesc, pos, size,
+                                               "<field name=\"%s\" start=\"%d\" end=\"%d\"/>\n",
+                                               field->name, field->bitfield->start,
+                                               field->bitfield->end);
+
+                               field = field->next;
+                       }
+               } else {
+                       /* <struct id="id">
+                        *  <field name="name" type="type"/> ...
+                        * </struct> */
+                       xml_printf(&retval, tdesc, pos, size,
+                                       "<struct id=\"%s\">\n",
+                                       type->id);
+                       while (field != NULL) {
+                               xml_printf(&retval, tdesc, pos, size,
+                                               "<field name=\"%s\" type=\"%s\"/>\n",
+                                               field->name, field->type->id);
+
+                               field = field->next;
+                       }
+               }
+
+               xml_printf(&retval, tdesc, pos, size,
+                               "</struct>\n");
+
+       } else if (type->type_class == REG_TYPE_CLASS_FLAGS) {
+               /* <flags id="id" size="size">
+                *  <field name="name" start="start" end="end"/> ...
+                * </flags> */
+               xml_printf(&retval, tdesc, pos, size,
+                               "<flags id=\"%s\" size=\"%d\">\n",
+                               type->id, type->reg_type_flags->size);
+
+               struct reg_data_type_flags_field *field;
+               field = type->reg_type_flags->fields;
+               while (field != NULL) {
+                       xml_printf(&retval, tdesc, pos, size,
+                                       "<field name=\"%s\" start=\"%d\" end=\"%d\"/>\n",
+                                       field->name, field->bitfield->start, field->bitfield->end);
+
+                       field = field->next;
+               }
+
+               xml_printf(&retval, tdesc, pos, size,
+                               "</flags>\n");
+
+       }
+
+       return ERROR_OK;
+}
+
+/* Get a list of available target registers features. feature_list must
+ * be freed by caller.
+ */
+int get_reg_features_list(struct target *target, char **feature_list[], int *feature_list_size,
+               struct reg **reg_list, int reg_list_size)
+{
+       int tbl_sz = 0;
+
+       /* Start with only one element */
+       *feature_list = calloc(1, sizeof(char *));
+
+       for (int i = 0; i < reg_list_size; i++) {
+               if (reg_list[i]->exist == false)
+                       continue;
+
+               if ((reg_list[i]->feature->name != NULL)
+                       && (strcmp(reg_list[i]->feature->name, ""))) {
+                       /* We found a feature, check if the feature is already in the
+                        * table. If not, allocate a new entry for the table and
+                        * put the new feature in it.
+                        */
+                       for (int j = 0; j < (tbl_sz + 1); j++) {
+                               if (!((*feature_list)[j])) {
+                                       (*feature_list)[tbl_sz++] = strdup(reg_list[i]->feature->name);
+                                       *feature_list = realloc(*feature_list, sizeof(char *) * (tbl_sz + 1));
+                                       (*feature_list)[tbl_sz] = NULL;
+                                       break;
+                               } else {
+                                       if (!strcmp((*feature_list)[j], reg_list[i]->feature->name))
+                                               break;
+                               }
+                       }
+               }
+       }
+
+       if (feature_list_size)
+               *feature_list_size = tbl_sz;
+
+       return ERROR_OK;
+}
+
+static int gdb_generate_target_description(struct target *target, char **tdesc)
+{
+       int retval = ERROR_OK;
+       struct reg **reg_list;
+       int reg_list_size;
+       int pos = 0;
+       int size = 0;
+
+       xml_printf(&retval, tdesc, &pos, &size,
+                       "<?xml version=\"1.0\"?>\n"
+                       "<!DOCTYPE target SYSTEM \"gdb-target.dtd\">\n"
+                       "<target version=\"1.0\">\n");
+
+       retval = target_get_gdb_reg_list(target, &reg_list,
+                       &reg_list_size, REG_CLASS_ALL);
+
+       if (retval != ERROR_OK) {
+               LOG_ERROR("get register list failed");
+               return ERROR_FAIL;
+       }
+
+       if (reg_list_size <= 0)
+               return ERROR_FAIL;
+
+       char **features = NULL;
+       /* Get a list of available target registers features */
+       retval = get_reg_features_list(target, &features, NULL, reg_list, reg_list_size);
+       if (retval != ERROR_OK) {
+               LOG_ERROR("Can't get the registers feature list");
+               return ERROR_FAIL;
+       }
+
+       /* If we found some features associated with registers, create sections */
+       int current_feature = 0;
+
+       /* generate target description according to register list */
+       if (features != NULL) {
+               while (features[current_feature]) {
+
+                       xml_printf(&retval, tdesc, &pos, &size,
+                                       "<feature name=\"%s\">\n",
+                                       features[current_feature]);
+
+                       int i;
+                       for (i = 0; i < reg_list_size; i++) {
+
+                               if (reg_list[i]->exist == false)
+                                       continue;
+
+                               if (strcmp(reg_list[i]->feature->name, features[current_feature]))
+                                       continue;
+
+                               const char *type_str;
+                               if (reg_list[i]->reg_data_type != NULL) {
+                                       if (reg_list[i]->reg_data_type->type == REG_TYPE_ARCH_DEFINED) {
+                                               /* generate <type... first, if there are architecture-defined types. */
+                                               gdb_generate_reg_type_description(target, tdesc, &pos, &size,
+                                                               reg_list[i]->reg_data_type);
+
+                                               type_str = reg_list[i]->reg_data_type->id;
+                                       } else {
+                                               /* predefined type */
+                                               type_str = gdb_get_reg_type_name(
+                                                               reg_list[i]->reg_data_type->type);
+                                       }
+                               } else {
+                                       /* Default type is "int" */
+                                       type_str = "int";
+                               }
+
+                               xml_printf(&retval, tdesc, &pos, &size,
+                                               "<reg name=\"%s\"", reg_list[i]->name);
+                               xml_printf(&retval, tdesc, &pos, &size,
+                                               " bitsize=\"%d\"", reg_list[i]->size);
+                               xml_printf(&retval, tdesc, &pos, &size,
+                                               " regnum=\"%d\"", reg_list[i]->number);
+                               if (reg_list[i]->caller_save)
+                                       xml_printf(&retval, tdesc, &pos, &size,
+                                                       " save-restore=\"yes\"");
+                               else
+                                       xml_printf(&retval, tdesc, &pos, &size,
+                                                       " save-restore=\"no\"");
+
+                               xml_printf(&retval, tdesc, &pos, &size,
+                                               " type=\"%s\"", type_str);
+
+                               if (reg_list[i]->group != NULL)
+                                       xml_printf(&retval, tdesc, &pos, &size,
+                                                       " group=\"%s\"", reg_list[i]->group);
+
+                               xml_printf(&retval, tdesc, &pos, &size,
+                                               "/>\n");
+                       }
+
+                       xml_printf(&retval, tdesc, &pos, &size,
+                                       "</feature>\n");
+
+                       current_feature++;
+               }
+       }
+
+       xml_printf(&retval, tdesc, &pos, &size,
+                       "</target>\n");
+
+       if (reg_list != NULL)
+               free(reg_list);
+
+       if (features != NULL)
+               free(features);
+
+       return ERROR_OK;
+}
+
+static int gdb_get_target_description_chunk(struct target *target, char **chunk,
+               int32_t offset, uint32_t length)
+{
+       static char *tdesc;
+       static uint32_t tdesc_length;
+
+       if (tdesc == NULL) {
+               gdb_generate_target_description(target, &tdesc);
+               tdesc_length = strlen(tdesc);
+       }
+
+       char transfer_type;
+
+       if (length < (tdesc_length - offset))
+               transfer_type = 'm';
+       else
+               transfer_type = 'l';
+
+       *chunk = malloc(length + 2);
+       (*chunk)[0] = transfer_type;
+       if (transfer_type == 'm') {
+               strncpy((*chunk) + 1, tdesc + offset, length);
+               (*chunk)[1 + length] = '\0';
+       } else {
+               strncpy((*chunk) + 1, tdesc + offset, tdesc_length - offset);
+               (*chunk)[1 + (tdesc_length - offset)] = '\0';
+
+               /* After gdb-server sends out last chunk, invalidate tdesc. */
+               free(tdesc);
+               tdesc = NULL;
+               tdesc_length = 0;
+       }
+
+       return ERROR_OK;
+}
+
 static int gdb_query_packet(struct connection *connection,
                char *packet, int packet_size)
 {
@@ -1744,9 +2084,10 @@ static int gdb_query_packet(struct connection *connection,
                        &buffer,
                        &pos,
                        &size,
-                       "PacketSize=%x;qXfer:memory-map:read%c;qXfer:features:read-;QStartNoAckMode+",
+                       "PacketSize=%x;qXfer:memory-map:read%c;qXfer:features:read%c;QStartNoAckMode+",
                        (GDB_BUFFER_SIZE - 1),
-                       ((gdb_use_memory_map == 1) && (flash_get_bank_count() > 0)) ? '+' : '-');
+                       ((gdb_use_memory_map == 1) && (flash_get_bank_count() > 0)) ? '+' : '-',
+                       (gdb_use_target_description == 1) ? '+' : '-');
 
                if (retval != ERROR_OK) {
                        gdb_send_error(connection, 01);
@@ -1762,8 +2103,6 @@ static int gdb_query_packet(struct connection *connection,
                return gdb_memory_map(connection, packet, packet_size);
        else if (strncmp(packet, "qXfer:features:read:", 20) == 0) {
                char *xml = NULL;
-               int size = 0;
-               int pos = 0;
                int retval = ERROR_OK;
 
                int offset;
@@ -1778,17 +2117,12 @@ static int gdb_query_packet(struct connection *connection,
                        return ERROR_OK;
                }
 
-               if (strcmp(annex, "target.xml") != 0) {
-                       gdb_send_error(connection, 01);
-                       return ERROR_OK;
-               }
-
-               xml_printf(&retval,
-                       &xml,
-                       &pos,
-                       &size, \
-                       "l < target version=\"1.0\">\n < architecture > arm</architecture>\n</target>\n");
-
+               /* Target should prepare correct target description for annex.
+                * The first character of returned xml is 'm' or 'l'. 'm' for
+                * there are *more* chunks to transfer. 'l' for it is the *last*
+                * chunk of target description.
+                */
+               retval = gdb_get_target_description_chunk(target, &xml, offset, length);
                if (retval != ERROR_OK) {
                        gdb_error(connection, retval);
                        return retval;
@@ -2372,6 +2706,54 @@ COMMAND_HANDLER(handle_gdb_breakpoint_override_command)
        return ERROR_OK;
 }
 
+COMMAND_HANDLER(handle_gdb_target_description_command)
+{
+       if (CMD_ARGC != 1)
+               return ERROR_COMMAND_SYNTAX_ERROR;
+
+       COMMAND_PARSE_ENABLE(CMD_ARGV[0], gdb_use_target_description);
+       return ERROR_OK;
+}
+
+COMMAND_HANDLER(handle_gdb_save_tdesc_command)
+{
+       static char *tdesc;
+       static uint32_t tdesc_length;
+       struct target *target = get_current_target(CMD_CTX);
+       char *tdesc_filename;
+
+       if (tdesc == NULL) {
+               gdb_generate_target_description(target, &tdesc);
+               tdesc_length = strlen(tdesc);
+       }
+
+       struct fileio fileio;
+       size_t size_written;
+
+       tdesc_filename = malloc(strlen(target_type_name(target)) + 5);
+       sprintf(tdesc_filename, "%s.xml", target_type_name(target));
+
+       int retval = fileio_open(&fileio, tdesc_filename, FILEIO_WRITE, FILEIO_TEXT);
+
+       free(tdesc_filename);
+
+       if (retval != ERROR_OK) {
+               LOG_WARNING("Can't open %s for writing", tdesc_filename);
+               return ERROR_FAIL;
+       }
+
+       retval = fileio_write(&fileio, tdesc_length, tdesc, &size_written);
+
+       fileio_close(&fileio);
+
+       if (retval != ERROR_OK) {
+               LOG_WARNING("Error while writing the tdesc file");
+               return ERROR_FAIL;
+       }
+
+       return ERROR_OK;
+}
+
 static const struct command_registration gdb_command_handlers[] = {
        {
                .name = "gdb_sync",
@@ -2424,6 +2806,19 @@ static const struct command_registration gdb_command_handlers[] = {
                        "to be used by gdb 'break' commands.",
                .usage = "('hard'|'soft'|'disable')"
        },
+       {
+               .name = "gdb_target_description",
+               .handler = handle_gdb_target_description_command,
+               .mode = COMMAND_CONFIG,
+               .help = "enable or disable target description",
+               .usage = "('enable'|'disable')"
+       },
+       {
+               .name = "gdb_save_tdesc",
+               .handler = handle_gdb_save_tdesc_command,
+               .mode = COMMAND_EXEC,
+               .help = "Save the target description file",
+       },
        COMMAND_REGISTRATION_DONE
 };
 
index 4a4d928..e2d2646 100644 (file)
@@ -211,7 +211,8 @@ extern const struct command_registration arm_command_handlers[];
 
 int arm_arch_state(struct target *target);
 int arm_get_gdb_reg_list(struct target *target,
-               struct reg **reg_list[], int *reg_list_size);
+               struct reg **reg_list[], int *reg_list_size,
+               enum target_register_class reg_class);
 
 int arm_init_arch_info(struct target *target, struct arm *arm);
 
index 91830f5..a2f0557 100644 (file)
@@ -1051,7 +1051,8 @@ const struct command_registration arm_command_handlers[] = {
 };
 
 int arm_get_gdb_reg_list(struct target *target,
-       struct reg **reg_list[], int *reg_list_size)
+       struct reg **reg_list[], int *reg_list_size,
+       enum target_register_class reg_class)
 {
        struct arm *arm = target_to_arm(target);
        int i;
index 622de49..d32352a 100644 (file)
@@ -259,7 +259,8 @@ static int armv7m_write_core_reg(struct target *target, struct reg *r,
  * hardware, so this also fakes a set of long-obsolete FPA registers that
  * are not used in EABI based software stacks.
  */
-int armv7m_get_gdb_reg_list(struct target *target, struct reg **reg_list[], int *reg_list_size)
+int armv7m_get_gdb_reg_list(struct target *target, struct reg **reg_list[],
+               int *reg_list_size, enum target_register_class reg_class)
 {
        struct armv7m_common *armv7m = target_to_armv7m(target);
        int i;
index bc245fb..d028f4e 100644 (file)
@@ -195,7 +195,8 @@ int armv7m_mode_to_number(enum armv7m_mode mode);
 
 int armv7m_arch_state(struct target *target);
 int armv7m_get_gdb_reg_list(struct target *target,
-               struct reg **reg_list[], int *reg_list_size);
+               struct reg **reg_list[], int *reg_list_size,
+               enum target_register_class reg_class);
 
 int armv7m_init_arch_info(struct target *target, struct armv7m_common *armv7m);
 
index cc9ab5a..7c97234 100644 (file)
@@ -576,7 +576,8 @@ int avr32_ap7k_arch_state(struct target *target)
        return ERROR_OK;
 }
 
-int avr32_ap7k_get_gdb_reg_list(struct target *target, struct reg **reg_list[], int *reg_list_size)
+int avr32_ap7k_get_gdb_reg_list(struct target *target, struct reg **reg_list[],
+               int *reg_list_size, enum target_register_class reg_class)
 {
 #if 0
        /* get pointers to arch-specific information */
index 1211ac5..8c47016 100644 (file)
@@ -354,7 +354,8 @@ static uint8_t gdb_reg_list_idx[] = {
 
 static int dsp563xx_get_gdb_reg_list(struct target *target,
        struct reg **reg_list[],
-       int *reg_list_size)
+       int *reg_list_size,
+       enum target_register_class reg_class)
 {
        int i;
        struct dsp563xx_common *dsp563xx = target_to_dsp563xx(target);
index 1067f7b..c9cbf86 100644 (file)
@@ -173,7 +173,8 @@ static int mips32_write_core_reg(struct target *target, int num)
        return ERROR_OK;
 }
 
-int mips32_get_gdb_reg_list(struct target *target, struct reg **reg_list[], int *reg_list_size)
+int mips32_get_gdb_reg_list(struct target *target, struct reg **reg_list[],
+               int *reg_list_size, enum target_register_class reg_class)
 {
        /* get pointers to arch-specific information */
        struct mips32_common *mips32 = target_to_mips32(target);
index 97fb5d0..951b2ed 100644 (file)
@@ -243,7 +243,8 @@ int mips32_examine(struct target *target);
 int mips32_register_commands(struct command_context *cmd_ctx);
 
 int mips32_get_gdb_reg_list(struct target *target,
-               struct reg **reg_list[], int *reg_list_size);
+               struct reg **reg_list[], int *reg_list_size,
+               enum target_register_class reg_class);
 int mips32_checksum_memory(struct target *target, uint32_t address,
                uint32_t count, uint32_t *checksum);
 int mips32_blank_check_memory(struct target *target,
index 2d47709..95a249d 100644 (file)
@@ -91,21 +91,23 @@ static int nds32_get_core_reg(struct reg *reg)
                return ERROR_OK;
        }
 
+       int mapped_regnum = nds32->register_map(nds32, reg_arch_info->num);
+
        if (reg_arch_info->enable == false) {
                reg_arch_info->value = NDS32_REGISTER_DISABLE;
                retval = ERROR_FAIL;
        } else {
                if ((nds32->fpu_enable == false) &&
-                       (NDS32_REG_TYPE_FPU == nds32_reg_type(reg_arch_info->num))) {
+                       (NDS32_REG_TYPE_FPU == nds32_reg_type(mapped_regnum))) {
                        reg_arch_info->value = 0;
                        retval = ERROR_OK;
                } else if ((nds32->audio_enable == false) &&
-                       (NDS32_REG_TYPE_AUMR == nds32_reg_type(reg_arch_info->num))) {
+                       (NDS32_REG_TYPE_AUMR == nds32_reg_type(mapped_regnum))) {
                        reg_arch_info->value = 0;
                        retval = ERROR_OK;
                } else {
                        retval = aice_read_register(aice,
-                                       reg_arch_info->num, &(reg_arch_info->value));
+                                       mapped_regnum, &(reg_arch_info->value));
                }
 
                LOG_DEBUG("reading register %i(%s), value: 0x%8.8" PRIx32,
@@ -301,44 +303,46 @@ static int nds32_set_core_reg(struct reg *reg, uint8_t *buf)
                return ERROR_TARGET_NOT_HALTED;
        }
 
+       int mapped_regnum = nds32->register_map(nds32, reg_arch_info->num);
+
        /* ignore values that will generate exception */
-       if (nds32_reg_exception(reg_arch_info->num, value))
+       if (nds32_reg_exception(mapped_regnum, value))
                return ERROR_OK;
 
        LOG_DEBUG("writing register %i(%s) with value 0x%8.8" PRIx32,
                        reg_arch_info->num, reg->name, value);
 
        if ((nds32->fpu_enable == false) &&
-               (NDS32_REG_TYPE_FPU == nds32_reg_type(reg_arch_info->num))) {
+               (NDS32_REG_TYPE_FPU == nds32_reg_type(mapped_regnum))) {
 
                buf_set_u32(reg->value, 0, 32, 0);
        } else if ((nds32->audio_enable == false) &&
-               (NDS32_REG_TYPE_AUMR == nds32_reg_type(reg_arch_info->num))) {
+               (NDS32_REG_TYPE_AUMR == nds32_reg_type(mapped_regnum))) {
 
                buf_set_u32(reg->value, 0, 32, 0);
        } else {
                buf_set_u32(reg->value, 0, 32, value);
-               aice_write_register(aice, reg_arch_info->num, reg_arch_info->value);
+               aice_write_register(aice, mapped_regnum, reg_arch_info->value);
 
                /* After set value to registers, read the value from target
                 * to avoid W1C inconsistency. */
-               aice_read_register(aice, reg_arch_info->num, &(reg_arch_info->value));
+               aice_read_register(aice, mapped_regnum, &(reg_arch_info->value));
        }
 
        reg->valid = true;
        reg->dirty = false;
 
        /* update registers to take effect right now */
-       if (IR0 == reg_arch_info->num) {
+       if (IR0 == mapped_regnum) {
                nds32_update_psw(nds32);
-       } else if (MR0 == reg_arch_info->num) {
+       } else if (MR0 == mapped_regnum) {
                nds32_update_mmu_info(nds32);
-       } else if ((MR6 == reg_arch_info->num) || (MR7 == reg_arch_info->num)) {
+       } else if ((MR6 == mapped_regnum) || (MR7 == mapped_regnum)) {
                /* update lm information */
                nds32_update_lm_info(nds32);
-       } else if (MR8 == reg_arch_info->num) {
+       } else if (MR8 == mapped_regnum) {
                nds32_update_cache_info(nds32);
-       } else if (FUCPR == reg_arch_info->num) {
+       } else if (FUCPR == mapped_regnum) {
                /* update audio/fpu setting */
                nds32_check_extension(nds32);
        }
@@ -415,17 +419,62 @@ static struct reg_cache *nds32_build_reg_cache(struct target *target,
                reg_arch_info[i].enable = false;
 
                reg_list[i].name = nds32_reg_simple_name(i);
+               reg_list[i].number = reg_arch_info[i].num;
                reg_list[i].size = nds32_reg_size(i);
                reg_list[i].arch_info = &reg_arch_info[i];
 
+               reg_list[i].reg_data_type = malloc(sizeof(struct reg_data_type));
+
                if (FD0 <= reg_arch_info[i].num && reg_arch_info[i].num <= FD31) {
                        reg_list[i].value = &(reg_arch_info[i].value_64);
                        reg_list[i].type = &nds32_reg_access_type_64;
+
+                       reg_list[i].reg_data_type->type = REG_TYPE_IEEE_DOUBLE;
+                       reg_list[i].reg_data_type->id = "ieee_double";
+                       reg_list[i].group = "float";
                } else {
                        reg_list[i].value = &(reg_arch_info[i].value);
                        reg_list[i].type = &nds32_reg_access_type;
+                       reg_list[i].group = "general";
+
+                       if ((FS0 <= reg_arch_info[i].num) && (reg_arch_info[i].num <= FS31)) {
+                               reg_list[i].reg_data_type->type = REG_TYPE_IEEE_SINGLE;
+                               reg_list[i].reg_data_type->id = "ieee_single";
+                               reg_list[i].group = "float";
+                       } else if ((reg_arch_info[i].num == FPCSR) ||
+                                  (reg_arch_info[i].num == FPCFG)) {
+                               reg_list[i].group = "float";
+                       } else if ((reg_arch_info[i].num == R28) ||
+                                  (reg_arch_info[i].num == R29) ||
+                                  (reg_arch_info[i].num == R31)) {
+                               reg_list[i].reg_data_type->type = REG_TYPE_DATA_PTR;
+                               reg_list[i].reg_data_type->id = "data_ptr";
+                       } else if ((reg_arch_info[i].num == R30) ||
+                                  (reg_arch_info[i].num == PC)) {
+                               reg_list[i].reg_data_type->type = REG_TYPE_CODE_PTR;
+                               reg_list[i].reg_data_type->id = "code_ptr";
+                       } else {
+                               reg_list[i].reg_data_type->type = REG_TYPE_UINT32;
+                               reg_list[i].reg_data_type->id = "uint32";
+                       }
                }
 
+               if (R16 <= reg_arch_info[i].num && reg_arch_info[i].num <= R25)
+                       reg_list[i].caller_save = true;
+               else
+                       reg_list[i].caller_save = false;
+
+               reg_list[i].feature = malloc(sizeof(struct reg_feature));
+
+               if (R0 <= reg_arch_info[i].num && reg_arch_info[i].num <= IFC_LP)
+                       reg_list[i].feature->name = "org.gnu.gdb.nds32.core";
+               else if (CR0 <= reg_arch_info[i].num && reg_arch_info[i].num <= SECUR0)
+                       reg_list[i].feature->name = "org.gnu.gdb.nds32.system";
+               else if (D0L24 <= reg_arch_info[i].num && reg_arch_info[i].num <= CBE3)
+                       reg_list[i].feature->name = "org.gnu.gdb.nds32.audio";
+               else if (FPCSR <= reg_arch_info[i].num && reg_arch_info[i].num <= FD31)
+                       reg_list[i].feature->name = "org.gnu.gdb.nds32.fpu";
+
                cache->num_regs++;
        }
 
@@ -451,9 +500,7 @@ static struct reg *nds32_reg_current(struct nds32 *nds32, unsigned regnum)
 {
        struct reg *r;
 
-       /* Register mapping, pass user-view registers to gdb */
-       int mapped_regnum = nds32->register_map(nds32, regnum);
-       r = nds32->core_cache->reg_list + mapped_regnum;
+       r = nds32->core_cache->reg_list + regnum;
 
        return r;
 }
@@ -512,12 +559,36 @@ int nds32_set_mapped_reg(struct nds32 *nds32, unsigned regnum, uint32_t value)
        return r->type->set(r, set_value);
 }
 
+/** get general register list */
+static int nds32_get_general_reg_list(struct nds32 *nds32,
+               struct reg **reg_list[], int *reg_list_size)
+{
+       struct reg *reg_current;
+       int i;
+       int current_idx;
+
+       /** freed in gdb_server.c */
+       *reg_list = malloc(sizeof(struct reg *) * (IFC_LP - R0 + 1));
+       current_idx = 0;
+
+       for (i = R0; i < IFC_LP + 1; i++) {
+               reg_current = nds32_reg_current(nds32, i);
+               if (((struct nds32_reg *)reg_current->arch_info)->enable) {
+                       (*reg_list)[current_idx] = reg_current;
+                       current_idx++;
+               }
+       }
+       *reg_list_size = current_idx;
+
+       return ERROR_OK;
+}
+
 /** get all register list */
-int nds32_get_gdb_reg_list(struct target *target,
+static int nds32_get_all_reg_list(struct nds32 *nds32,
                struct reg **reg_list[], int *reg_list_size)
 {
-       struct nds32 *nds32 = target_to_nds32(target);
        struct reg_cache *reg_cache = nds32->core_cache;
+       struct reg *reg_current;
        unsigned int i;
 
        *reg_list_size = reg_cache->num_regs;
@@ -525,12 +596,35 @@ int nds32_get_gdb_reg_list(struct target *target,
        /** freed in gdb_server.c */
        *reg_list = malloc(sizeof(struct reg *) * (*reg_list_size));
 
-       for (i = 0; i < reg_cache->num_regs; i++)
-               (*reg_list)[i] = nds32_reg_current(nds32, i);
+       for (i = 0; i < reg_cache->num_regs; i++) {
+               reg_current = nds32_reg_current(nds32, i);
+               reg_current->exist = ((struct nds32_reg *)
+                               reg_current->arch_info)->enable;
+               (*reg_list)[i] = reg_current;
+       }
 
        return ERROR_OK;
 }
 
+/** get all register list */
+int nds32_get_gdb_reg_list(struct target *target,
+               struct reg **reg_list[], int *reg_list_size,
+               enum target_register_class reg_class)
+{
+       struct nds32 *nds32 = target_to_nds32(target);
+
+       switch (reg_class) {
+               case REG_CLASS_ALL:
+                       return nds32_get_all_reg_list(nds32, reg_list, reg_list_size);
+               case REG_CLASS_GENERAL:
+                       return nds32_get_general_reg_list(nds32, reg_list, reg_list_size);
+               default:
+                       return ERROR_FAIL;
+       }
+
+       return ERROR_FAIL;
+}
+
 static int nds32_select_memory_mode(struct target *target, uint32_t address,
                uint32_t length, uint32_t *end_address)
 {
index f585c2d..b7e787c 100644 (file)
@@ -341,7 +341,7 @@ struct nds32 {
 };
 
 struct nds32_reg {
-       uint32_t num;
+       int32_t num;
        uint32_t value;
        uint64_t value_64;
        struct target *target;
@@ -364,7 +364,8 @@ extern int nds32_remove_software_breakpoint(struct target *target,
                struct breakpoint *breakpoint);
 
 extern int nds32_get_gdb_reg_list(struct target *target,
-               struct reg **reg_list[], int *reg_list_size);
+               struct reg **reg_list[], int *reg_list_size,
+               enum target_register_class reg_class);
 
 extern int nds32_write_buffer(struct target *target, uint32_t address,
                uint32_t size, const uint8_t *buffer);
index 3810d14..9e0f1ce 100644 (file)
 
 struct target;
 
+enum reg_type {
+       REG_TYPE_INT8,
+       REG_TYPE_INT16,
+       REG_TYPE_INT32,
+       REG_TYPE_INT64,
+       REG_TYPE_INT128,
+       REG_TYPE_UINT8,
+       REG_TYPE_UINT16,
+       REG_TYPE_UINT32,
+       REG_TYPE_UINT64,
+       REG_TYPE_UINT128,
+       REG_TYPE_CODE_PTR,
+       REG_TYPE_DATA_PTR,
+       REG_TYPE_IEEE_SINGLE,
+       REG_TYPE_IEEE_DOUBLE,
+       REG_TYPE_ARCH_DEFINED,
+};
+
+struct reg_feature {
+       const char *name;
+};
+
+struct reg_data_type_vector {
+       struct reg_data_type *type;
+       uint32_t count;
+};
+
+struct reg_data_type_union_field {
+       const char *name;
+       struct reg_data_type *type;
+       struct reg_data_type_union_field *next;
+};
+
+struct reg_data_type_union {
+       struct reg_data_type_union_field *fields;
+};
+
+struct reg_data_type_bitfield {
+       uint32_t start;
+       uint32_t end;
+};
+
+struct reg_data_type_struct_field {
+       const char *name;
+       bool use_bitfields;
+       union {
+               struct reg_data_type_bitfield *bitfield;
+               struct reg_data_type *type;
+       };
+       struct reg_data_type_struct_field *next;
+};
+
+struct reg_data_type_struct {
+       uint32_t size;
+       struct reg_data_type_struct_field *fields;
+};
+
+struct reg_data_type_flags_field {
+       const char *name;
+       struct reg_data_type_bitfield *bitfield;
+       struct reg_data_type_flags_field *next;
+};
+
+struct reg_data_type_flags {
+       uint32_t size;
+       struct reg_data_type_flags_field *fields;
+};
+
+enum reg_data_type_class {
+       REG_TYPE_CLASS_VECTOR,
+       REG_TYPE_CLASS_UNION,
+       REG_TYPE_CLASS_STRUCT,
+       REG_TYPE_CLASS_FLAGS,
+};
+
+struct reg_data_type {
+       enum reg_type type;
+       const char *id;
+       enum reg_data_type_class type_class;
+       union {
+               struct reg_data_type_vector *reg_type_vector;
+               struct reg_data_type_union *reg_type_union;
+               struct reg_data_type_struct *reg_type_struct;
+               struct reg_data_type_flags *reg_type_flags;
+       };
+};
+
 struct reg {
        const char *name;
+       uint32_t number;
+       struct reg_feature *feature;
+       bool caller_save;
        void *value;
        bool dirty;
        bool valid;
+       bool exist;
        uint32_t size;
+       struct reg_data_type *reg_data_type;
+       const char *group;
        void *arch_info;
        const struct reg_arch_type *type;
 };
index 1f517ac..c5b80d6 100644 (file)
@@ -1037,9 +1037,10 @@ int target_remove_watchpoint(struct target *target,
 }
 
 int target_get_gdb_reg_list(struct target *target,
-               struct reg **reg_list[], int *reg_list_size)
+               struct reg **reg_list[], int *reg_list_size,
+               enum target_register_class reg_class)
 {
-       return target->type->get_gdb_reg_list(target, reg_list, reg_list_size);
+       return target->type->get_gdb_reg_list(target, reg_list, reg_list_size, reg_class);
 }
 int target_step(struct target *target,
                int current, uint32_t address, int handle_breakpoints)
index 38bb875..42414c6 100644 (file)
@@ -114,6 +114,12 @@ struct backoff_timer {
        int count;
 };
 
+/* split target registers into multiple class */
+enum target_register_class {
+       REG_CLASS_ALL,
+       REG_CLASS_GENERAL,
+};
+
 /* target_type.h contains the full definition of struct target_type */
 struct target {
        struct target_type *type;                       /* target type definition (name, access functions) */
@@ -399,7 +405,8 @@ int target_remove_watchpoint(struct target *target,
  * This routine is a wrapper for target->type->get_gdb_reg_list.
  */
 int target_get_gdb_reg_list(struct target *target,
-               struct reg **reg_list[], int *reg_list_size);
+               struct reg **reg_list[], int *reg_list_size,
+               enum target_register_class reg_class);
 
 /**
  * Step the target.
index 3a3de7a..4d9a33f 100644 (file)
@@ -101,7 +101,8 @@ struct target_type {
         * list, however it is after GDB is connected that monitor commands can
         * be run to properly initialize the target
         */
-       int (*get_gdb_reg_list)(struct target *target, struct reg **reg_list[], int *reg_list_size);
+       int (*get_gdb_reg_list)(struct target *target, struct reg **reg_list[],
+                       int *reg_list_size, enum target_register_class reg_class);
 
        /* target memory access
        * size: 1 = byte (8bit), 2 = half-word (16bit), 4 = word (32bit)