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riscv-openocd/src/target/arc_cmd.c

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/***************************************************************************
* Copyright (C) 2013-2015,2019-2020 Synopsys, Inc. *
* Frank Dols <frank.dols@synopsys.com> *
* Mischa Jonker <mischa.jonker@synopsys.com> *
* Anton Kolesov <anton.kolesov@synopsys.com> *
* Evgeniy Didin <didin@synopsys.com> *
* *
* SPDX-License-Identifier: GPL-2.0-or-later *
***************************************************************************/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "arc.h"
/* --------------------------------------------------------------------------
*
* ARC targets expose command interface.
* It can be accessed via GDB through the (gdb) monitor command.
*
* ------------------------------------------------------------------------- */
static int arc_cmd_jim_get_uint32(Jim_GetOptInfo *goi, uint32_t *value)
{
jim_wide value_wide;
JIM_CHECK_RETVAL(Jim_GetOpt_Wide(goi, &value_wide));
*value = (uint32_t)value_wide;
return JIM_OK;
}
enum add_reg_types {
CFG_ADD_REG_TYPE_FLAG,
CFG_ADD_REG_TYPE_STRUCT,
};
/* Add flags register data type */
enum add_reg_type_flags {
CFG_ADD_REG_TYPE_FLAGS_NAME,
CFG_ADD_REG_TYPE_FLAGS_FLAG,
};
static Jim_Nvp nvp_add_reg_type_flags_opts[] = {
{ .name = "-name", .value = CFG_ADD_REG_TYPE_FLAGS_NAME },
{ .name = "-flag", .value = CFG_ADD_REG_TYPE_FLAGS_FLAG },
{ .name = NULL, .value = -1 }
};
/* Helper function to check if all field required for register
* are set up */
static const char *validate_register(const struct arc_reg_desc * const reg, bool arch_num_set)
{
/* Check that required fields are set */
if (!reg->name)
return "-name option is required";
if (!reg->gdb_xml_feature)
return "-feature option is required";
if (!arch_num_set)
return "-num option is required";
if (reg->is_bcr && reg->is_core)
return "Register cannot be both -core and -bcr.";
return NULL;
}
/* Helper function to read the name of register type or register from
* configure files */
static int jim_arc_read_reg_name_field(Jim_GetOptInfo *goi,
const char **name, int *name_len)
{
int e = JIM_OK;
if (!goi->argc) {
Jim_WrongNumArgs(goi->interp, goi->argc, goi->argv, "-name <name> ...");
return JIM_ERR;
}
e = Jim_GetOpt_String(goi, name, name_len);
return e;
}
/* Helper function to read bitfields/flags of register type. */
static int jim_arc_read_reg_type_field(Jim_GetOptInfo *goi, const char **field_name, int *field_name_len,
struct arc_reg_bitfield *bitfields, int cur_field, int type)
{
jim_wide start_pos, end_pos;
int e = JIM_OK;
if ((type == CFG_ADD_REG_TYPE_STRUCT && goi->argc < 3) ||
(type == CFG_ADD_REG_TYPE_FLAG && goi->argc < 2)) {
Jim_SetResultFormatted(goi->interp, "Not enough arguments after -flag/-bitfield");
return JIM_ERR;
}
e = Jim_GetOpt_String(goi, field_name, field_name_len);
if (e != JIM_OK)
return e;
/* read start position of bitfield/flag */
e = Jim_GetOpt_Wide(goi, &start_pos);
if (e != JIM_OK)
return e;
end_pos = start_pos;
/* Check if any arguments remain,
* set bitfields[cur_field].end if flag is multibit */
if (goi->argc > 0)
/* Check current argv[0], if it is equal to "-flag",
* than bitfields[cur_field].end remains start */
if ((strcmp(Jim_String(goi->argv[0]), "-flag") && type == CFG_ADD_REG_TYPE_FLAG)
|| (type == CFG_ADD_REG_TYPE_STRUCT)) {
e = Jim_GetOpt_Wide(goi, &end_pos);
if (e != JIM_OK) {
Jim_SetResultFormatted(goi->interp, "Error reading end position");
return e;
}
}
bitfields[cur_field].bitfield.start = start_pos;
bitfields[cur_field].bitfield.end = end_pos;
if ((end_pos != start_pos) || (type == CFG_ADD_REG_TYPE_STRUCT))
bitfields[cur_field].bitfield.type = REG_TYPE_INT;
return e;
}
static int jim_arc_add_reg_type_flags(Jim_Interp *interp, int argc,
Jim_Obj * const *argv)
{
Jim_GetOptInfo goi;
JIM_CHECK_RETVAL(Jim_GetOpt_Setup(&goi, interp, argc-1, argv+1));
LOG_DEBUG("-");
struct command_context *ctx;
struct target *target;
ctx = current_command_context(interp);
assert(ctx);
target = get_current_target(ctx);
if (!target) {
Jim_SetResultFormatted(goi.interp, "No current target");
return JIM_ERR;
}
int e = JIM_OK;
/* Check if the amount of arguments is not zero */
if (goi.argc <= 0) {
Jim_SetResultFormatted(goi.interp, "The command has no arguments");
return JIM_ERR;
}
/* Estimate number of registers as (argc - 2)/3 as each -flag option has 2
* arguments while -name is required. */
unsigned int fields_sz = (goi.argc - 2) / 3;
unsigned int cur_field = 0;
/* The maximum amount of bitfields is 32 */
if (fields_sz > 32) {
Jim_SetResultFormatted(goi.interp, "The amount of bitfields exceed 32");
return JIM_ERR;
}
struct arc_reg_data_type *type = calloc(1, sizeof(*type));
struct reg_data_type_flags *flags = &type->data_type_flags;
struct reg_data_type_flags_field *fields = calloc(fields_sz, sizeof(*fields));
type->reg_type_flags_field = fields;
struct arc_reg_bitfield *bitfields = calloc(fields_sz, sizeof(*bitfields));
if (!(type && fields && bitfields)) {
Jim_SetResultFormatted(goi.interp, "Failed to allocate memory.");
goto fail;
}
/* Initialize type */
type->bitfields = bitfields;
type->data_type.id = type->data_type_id;
type->data_type.type = REG_TYPE_ARCH_DEFINED;
type->data_type.type_class = REG_TYPE_CLASS_FLAGS;
type->data_type.reg_type_flags = flags;
flags->size = 4; /* For now ARC has only 32-bit registers */
while (goi.argc > 0 && e == JIM_OK) {
Jim_Nvp *n;
e = Jim_GetOpt_Nvp(&goi, nvp_add_reg_type_flags_opts, &n);
if (e != JIM_OK) {
Jim_GetOpt_NvpUnknown(&goi, nvp_add_reg_type_flags_opts, 0);
continue;
}
switch (n->value) {
case CFG_ADD_REG_TYPE_FLAGS_NAME:
{
const char *name = NULL;
int name_len = 0;
e = jim_arc_read_reg_name_field(&goi, &name, &name_len);
if (e != JIM_OK) {
Jim_SetResultFormatted(goi.interp, "Unable to read reg name.");
goto fail;
}
if (name_len > REG_TYPE_MAX_NAME_LENGTH) {
Jim_SetResultFormatted(goi.interp, "Reg type name is too big.");
goto fail;
}
strncpy((void *)type->data_type.id, name, name_len);
if (!type->data_type.id) {
Jim_SetResultFormatted(goi.interp, "Unable to setup reg type name.");
goto fail;
}
break;
}
case CFG_ADD_REG_TYPE_FLAGS_FLAG:
{
const char *field_name = NULL;
int field_name_len = 0;
e = jim_arc_read_reg_type_field(&goi, &field_name, &field_name_len, bitfields,
cur_field, CFG_ADD_REG_TYPE_FLAG);
if (e != JIM_OK) {
Jim_SetResultFormatted(goi.interp, "Unable to add reg_type_flag field.");
goto fail;
}
if (field_name_len > REG_TYPE_MAX_NAME_LENGTH) {
Jim_SetResultFormatted(goi.interp, "Reg type field_name_len is too big.");
goto fail;
}
fields[cur_field].name = bitfields[cur_field].name;
strncpy(bitfields[cur_field].name, field_name, field_name_len);
if (!fields[cur_field].name) {
Jim_SetResultFormatted(goi.interp, "Unable to setup field name. ");
goto fail;
}
fields[cur_field].bitfield = &(bitfields[cur_field].bitfield);
if (cur_field > 0)
fields[cur_field - 1].next = &(fields[cur_field]);
else
flags->fields = fields;
cur_field += 1;
break;
}
}
}
if (!type->data_type.id) {
Jim_SetResultFormatted(goi.interp, "-name is a required option");
goto fail;
}
arc_reg_data_type_add(target, type);
LOG_DEBUG("added flags type {name=%s}", type->data_type.id);
return JIM_OK;
fail:
free(type);
free(fields);
free(bitfields);
return JIM_ERR;
}
/* Add struct register data type */
enum add_reg_type_struct {
CFG_ADD_REG_TYPE_STRUCT_NAME,
CFG_ADD_REG_TYPE_STRUCT_BITFIELD,
};
static Jim_Nvp nvp_add_reg_type_struct_opts[] = {
{ .name = "-name", .value = CFG_ADD_REG_TYPE_STRUCT_NAME },
{ .name = "-bitfield", .value = CFG_ADD_REG_TYPE_STRUCT_BITFIELD },
{ .name = NULL, .value = -1 }
};
static int jim_arc_set_aux_reg(Jim_Interp *interp, int argc, Jim_Obj * const *argv)
{
struct command_context *context;
struct target *target;
uint32_t regnum;
uint32_t value;
Jim_GetOptInfo goi;
JIM_CHECK_RETVAL(Jim_GetOpt_Setup(&goi, interp, argc-1, argv+1));
if (goi.argc != 2) {
Jim_SetResultFormatted(goi.interp,
"usage: %s <aux_reg_num> <aux_reg_value>", Jim_GetString(argv[0], NULL));
return JIM_ERR;
}
context = current_command_context(interp);
assert(context);
target = get_current_target(context);
if (!target) {
Jim_SetResultFormatted(goi.interp, "No current target");
return JIM_ERR;
}
/* Register number */
JIM_CHECK_RETVAL(arc_cmd_jim_get_uint32(&goi, &regnum));
/* Register value */
JIM_CHECK_RETVAL(arc_cmd_jim_get_uint32(&goi, &value));
struct arc_common *arc = target_to_arc(target);
assert(arc);
CHECK_RETVAL(arc_jtag_write_aux_reg_one(&arc->jtag_info, regnum, value));
return ERROR_OK;
}
static int jim_arc_get_aux_reg(Jim_Interp *interp, int argc, Jim_Obj * const *argv)
{
struct command_context *context;
struct target *target;
uint32_t regnum;
uint32_t value;
Jim_GetOptInfo goi;
JIM_CHECK_RETVAL(Jim_GetOpt_Setup(&goi, interp, argc-1, argv+1));
if (goi.argc != 1) {
Jim_SetResultFormatted(goi.interp,
"usage: %s <aux_reg_num>", Jim_GetString(argv[0], NULL));
return JIM_ERR;
}
context = current_command_context(interp);
assert(context);
target = get_current_target(context);
if (!target) {
Jim_SetResultFormatted(goi.interp, "No current target");
return JIM_ERR;
}
/* Register number */
JIM_CHECK_RETVAL(arc_cmd_jim_get_uint32(&goi, &regnum));
struct arc_common *arc = target_to_arc(target);
assert(arc);
CHECK_RETVAL(arc_jtag_read_aux_reg_one(&arc->jtag_info, regnum, &value));
Jim_SetResultInt(interp, value);
return ERROR_OK;
}
static int jim_arc_get_core_reg(Jim_Interp *interp, int argc, Jim_Obj * const *argv)
{
struct command_context *context;
struct target *target;
uint32_t regnum;
uint32_t value;
Jim_GetOptInfo goi;
JIM_CHECK_RETVAL(Jim_GetOpt_Setup(&goi, interp, argc-1, argv+1));
if (goi.argc != 1) {
Jim_SetResultFormatted(goi.interp,
"usage: %s <core_reg_num>", Jim_GetString(argv[0], NULL));
return JIM_ERR;
}
context = current_command_context(interp);
assert(context);
target = get_current_target(context);
if (!target) {
Jim_SetResultFormatted(goi.interp, "No current target");
return JIM_ERR;
}
/* Register number */
JIM_CHECK_RETVAL(arc_cmd_jim_get_uint32(&goi, &regnum));
if (regnum > CORE_REG_MAX_NUMBER || regnum == CORE_R61_NUM || regnum == CORE_R62_NUM) {
Jim_SetResultFormatted(goi.interp, "Core register number %i "
"is invalid. Must less then 64 and not 61 and 62.", regnum);
return JIM_ERR;
}
struct arc_common *arc = target_to_arc(target);
assert(arc);
/* Read value */
CHECK_RETVAL(arc_jtag_read_core_reg_one(&arc->jtag_info, regnum, &value));
Jim_SetResultInt(interp, value);
return ERROR_OK;
}
static int jim_arc_set_core_reg(Jim_Interp *interp, int argc, Jim_Obj * const *argv)
{
struct command_context *context;
struct target *target;
uint32_t regnum;
uint32_t value;
Jim_GetOptInfo goi;
JIM_CHECK_RETVAL(Jim_GetOpt_Setup(&goi, interp, argc-1, argv+1));
if (goi.argc != 2) {
Jim_SetResultFormatted(goi.interp,
"usage: %s <core_reg_num> <core_reg_value>", Jim_GetString(argv[0], NULL));
return JIM_ERR;
}
context = current_command_context(interp);
assert(context);
target = get_current_target(context);
if (!target) {
Jim_SetResultFormatted(goi.interp, "No current target");
return JIM_ERR;
}
/* Register number */
JIM_CHECK_RETVAL(arc_cmd_jim_get_uint32(&goi, &regnum));
if (regnum > CORE_REG_MAX_NUMBER || regnum == CORE_R61_NUM || regnum == CORE_R62_NUM) {
Jim_SetResultFormatted(goi.interp, "Core register number %i "
"is invalid. Must less then 64 and not 61 and 62.", regnum);
return JIM_ERR;
}
/* Register value */
JIM_CHECK_RETVAL(arc_cmd_jim_get_uint32(&goi, &value));
struct arc_common *arc = target_to_arc(target);
assert(arc);
CHECK_RETVAL(arc_jtag_write_core_reg_one(&arc->jtag_info, regnum, value));
return ERROR_OK;
}
static const struct command_registration arc_jtag_command_group[] = {
{
.name = "get-aux-reg",
.jim_handler = jim_arc_get_aux_reg,
.mode = COMMAND_EXEC,
.help = "Get AUX register by number. This command does a "
"raw JTAG request that bypasses OpenOCD register cache "
"and thus is unsafe and can have unexpected consequences. "
"Use at your own risk.",
.usage = "<regnum>"
},
{
.name = "set-aux-reg",
.jim_handler = jim_arc_set_aux_reg,
.mode = COMMAND_EXEC,
.help = "Set AUX register by number. This command does a "
"raw JTAG request that bypasses OpenOCD register cache "
"and thus is unsafe and can have unexpected consequences. "
"Use at your own risk.",
.usage = "<regnum> <value>"
},
{
.name = "get-core-reg",
.jim_handler = jim_arc_get_core_reg,
.mode = COMMAND_EXEC,
.help = "Get/Set core register by number. This command does a "
"raw JTAG request that bypasses OpenOCD register cache "
"and thus is unsafe and can have unexpected consequences. "
"Use at your own risk.",
.usage = "<regnum> [<value>]"
},
{
.name = "set-core-reg",
.jim_handler = jim_arc_set_core_reg,
.mode = COMMAND_EXEC,
.help = "Get/Set core register by number. This command does a "
"raw JTAG request that bypasses OpenOCD register cache "
"and thus is unsafe and can have unexpected consequences. "
"Use at your own risk.",
.usage = "<regnum> [<value>]"
},
COMMAND_REGISTRATION_DONE
};
/* This function supports only bitfields. */
static int jim_arc_add_reg_type_struct(Jim_Interp *interp, int argc,
Jim_Obj * const *argv)
{
Jim_GetOptInfo goi;
JIM_CHECK_RETVAL(Jim_GetOpt_Setup(&goi, interp, argc-1, argv+1));
LOG_DEBUG("-");
struct command_context *ctx;
struct target *target;
ctx = current_command_context(interp);
assert(ctx);
target = get_current_target(ctx);
if (!target) {
Jim_SetResultFormatted(goi.interp, "No current target");
return JIM_ERR;
}
int e = JIM_OK;
/* Check if the amount of arguments is not zero */
if (goi.argc <= 0) {
Jim_SetResultFormatted(goi.interp, "The command has no arguments");
return JIM_ERR;
}
/* Estimate number of registers as (argc - 2)/4 as each -bitfield option has 3
* arguments while -name is required. */
unsigned int fields_sz = (goi.argc - 2) / 4;
unsigned int cur_field = 0;
/* The maximum amount of bitfields is 32 */
if (fields_sz > 32) {
Jim_SetResultFormatted(goi.interp, "The amount of bitfields exceed 32");
return JIM_ERR;
}
struct arc_reg_data_type *type = calloc(1, sizeof(*type));
struct reg_data_type_struct *struct_type = &type->data_type_struct;
struct reg_data_type_struct_field *fields = calloc(fields_sz, sizeof(*fields));
type->reg_type_struct_field = fields;
struct arc_reg_bitfield *bitfields = calloc(fields_sz, sizeof(*bitfields));
if (!(type && fields && bitfields)) {
Jim_SetResultFormatted(goi.interp, "Failed to allocate memory.");
goto fail;
}
/* Initialize type */
type->data_type.id = type->data_type_id;
type->bitfields = bitfields;
type->data_type.type = REG_TYPE_ARCH_DEFINED;
type->data_type.type_class = REG_TYPE_CLASS_STRUCT;
type->data_type.reg_type_struct = struct_type;
struct_type->size = 4; /* For now ARC has only 32-bit registers */
while (goi.argc > 0 && e == JIM_OK) {
Jim_Nvp *n;
e = Jim_GetOpt_Nvp(&goi, nvp_add_reg_type_struct_opts, &n);
if (e != JIM_OK) {
Jim_GetOpt_NvpUnknown(&goi, nvp_add_reg_type_struct_opts, 0);
continue;
}
switch (n->value) {
case CFG_ADD_REG_TYPE_STRUCT_NAME:
{
const char *name = NULL;
int name_len = 0;
e = jim_arc_read_reg_name_field(&goi, &name, &name_len);
if (e != JIM_OK) {
Jim_SetResultFormatted(goi.interp, "Unable to read reg name.");
goto fail;
}
if (name_len > REG_TYPE_MAX_NAME_LENGTH) {
Jim_SetResultFormatted(goi.interp, "Reg type name is too big.");
goto fail;
}
strncpy((void *)type->data_type.id, name, name_len);
if (!type->data_type.id) {
Jim_SetResultFormatted(goi.interp, "Unable to setup reg type name.");
goto fail;
}
break;
}
case CFG_ADD_REG_TYPE_STRUCT_BITFIELD:
{
const char *field_name = NULL;
int field_name_len = 0;
e = jim_arc_read_reg_type_field(&goi, &field_name, &field_name_len, bitfields,
cur_field, CFG_ADD_REG_TYPE_STRUCT);
if (e != JIM_OK) {
Jim_SetResultFormatted(goi.interp, "Unable to add reg_type_struct field.");
goto fail;
}
if (field_name_len > REG_TYPE_MAX_NAME_LENGTH) {
Jim_SetResultFormatted(goi.interp, "Reg type field_name_len is too big.");
goto fail;
}
fields[cur_field].name = bitfields[cur_field].name;
strncpy(bitfields[cur_field].name, field_name, field_name_len);
if (!fields[cur_field].name) {
Jim_SetResultFormatted(goi.interp, "Unable to setup field name. ");
goto fail;
}
fields[cur_field].bitfield = &(bitfields[cur_field].bitfield);
fields[cur_field].use_bitfields = true;
if (cur_field > 0)
fields[cur_field - 1].next = &(fields[cur_field]);
else
struct_type->fields = fields;
cur_field += 1;
break;
}
}
}
if (!type->data_type.id) {
Jim_SetResultFormatted(goi.interp, "-name is a required option");
goto fail;
}
arc_reg_data_type_add(target, type);
LOG_DEBUG("added struct type {name=%s}", type->data_type.id);
return JIM_OK;
fail:
free(type);
free(fields);
free(bitfields);
return JIM_ERR;
}
/* Add register */
enum opts_add_reg {
CFG_ADD_REG_NAME,
CFG_ADD_REG_ARCH_NUM,
CFG_ADD_REG_IS_CORE,
CFG_ADD_REG_IS_BCR,
CFG_ADD_REG_GDB_FEATURE,
CFG_ADD_REG_TYPE,
CFG_ADD_REG_GENERAL,
};
static Jim_Nvp opts_nvp_add_reg[] = {
{ .name = "-name", .value = CFG_ADD_REG_NAME },
{ .name = "-num", .value = CFG_ADD_REG_ARCH_NUM },
{ .name = "-core", .value = CFG_ADD_REG_IS_CORE },
{ .name = "-bcr", .value = CFG_ADD_REG_IS_BCR },
{ .name = "-feature", .value = CFG_ADD_REG_GDB_FEATURE },
{ .name = "-type", .value = CFG_ADD_REG_TYPE },
{ .name = "-g", .value = CFG_ADD_REG_GENERAL },
{ .name = NULL, .value = -1 }
};
void free_reg_desc(struct arc_reg_desc *r)
{
free(r->name);
free(r->gdb_xml_feature);
free(r);
}
static int jim_arc_add_reg(Jim_Interp *interp, int argc, Jim_Obj * const *argv)
{
Jim_GetOptInfo goi;
JIM_CHECK_RETVAL(Jim_GetOpt_Setup(&goi, interp, argc-1, argv+1));
struct arc_reg_desc *reg = calloc(1, sizeof(*reg));
if (!reg) {
Jim_SetResultFormatted(goi.interp, "Failed to allocate memory.");
return JIM_ERR;
}
/* There is no architecture number that we could treat as invalid, so
* separate variable required to ensure that arch num has been set. */
bool arch_num_set = false;
const char *type_name = "int"; /* Default type */
int type_name_len = strlen(type_name);
int e = ERROR_OK;
/* At least we need to specify 4 parameters: name, number and gdb_feature,
* which means there should be 6 arguments. Also there can be additional parameters
* "-type <type>", "-g" and "-core" or "-bcr" which makes maximum 10 parameters. */
if (goi.argc < 6 || goi.argc > 10) {
free_reg_desc(reg);
Jim_SetResultFormatted(goi.interp,
"Should be at least 6 arguments and not greater than 10: "
" -name <name> -num <num> -feature <gdb_feature> "
" [-type <type_name>] [-core|-bcr] [-g].");
return JIM_ERR;
}
/* Parse options. */
while (goi.argc > 0) {
Jim_Nvp *n;
e = Jim_GetOpt_Nvp(&goi, opts_nvp_add_reg, &n);
if (e != JIM_OK) {
Jim_GetOpt_NvpUnknown(&goi, opts_nvp_add_reg, 0);
free_reg_desc(reg);
return e;
}
switch (n->value) {
case CFG_ADD_REG_NAME:
{
const char *reg_name = NULL;
int reg_name_len = 0;
e = jim_arc_read_reg_name_field(&goi, &reg_name, &reg_name_len);
if (e != JIM_OK) {
Jim_SetResultFormatted(goi.interp, "Unable to read register name.");
free_reg_desc(reg);
return e;
}
reg->name = strndup(reg_name, reg_name_len);
break;
}
case CFG_ADD_REG_IS_CORE:
reg->is_core = true;
break;
case CFG_ADD_REG_IS_BCR:
reg->is_bcr = true;
break;
case CFG_ADD_REG_ARCH_NUM:
{
jim_wide archnum;
if (!goi.argc) {
free_reg_desc(reg);
Jim_WrongNumArgs(interp, goi.argc, goi.argv, "-num <int> ...");
return JIM_ERR;
}
e = Jim_GetOpt_Wide(&goi, &archnum);
if (e != JIM_OK) {
free_reg_desc(reg);
return e;
}
reg->arch_num = archnum;
arch_num_set = true;
break;
}
case CFG_ADD_REG_GDB_FEATURE:
{
const char *feature = NULL;
int feature_len = 0;
e = jim_arc_read_reg_name_field(&goi, &feature, &feature_len);
if (e != JIM_OK) {
Jim_SetResultFormatted(goi.interp, "Unable to read gdb_feature.");
free_reg_desc(reg);
return e;
}
reg->gdb_xml_feature = strndup(feature, feature_len);
break;
}
case CFG_ADD_REG_TYPE:
e = jim_arc_read_reg_name_field(&goi, &type_name, &type_name_len);
if (e != JIM_OK) {
Jim_SetResultFormatted(goi.interp, "Unable to read register type.");
free_reg_desc(reg);
return e;
}
break;
case CFG_ADD_REG_GENERAL:
reg->is_general = true;
break;
default:
LOG_DEBUG("Error: Unknown parameter");
free_reg_desc(reg);
return JIM_ERR;
}
}
/* Check that required fields are set */
const char * const errmsg = validate_register(reg, arch_num_set);
if (errmsg) {
Jim_SetResultFormatted(goi.interp, errmsg);
free_reg_desc(reg);
return JIM_ERR;
}
/* Add new register */
struct command_context *ctx;
struct target *target;
ctx = current_command_context(interp);
assert(ctx);
target = get_current_target(ctx);
if (!target) {
Jim_SetResultFormatted(goi.interp, "No current target");
free_reg_desc(reg);
return JIM_ERR;
}
reg->target = target;
e = arc_reg_add(target, reg, type_name, type_name_len);
if (e == ERROR_ARC_REGTYPE_NOT_FOUND) {
Jim_SetResultFormatted(goi.interp,
"Cannot find type `%s' for register `%s'.",
type_name, reg->name);
free_reg_desc(reg);
return JIM_ERR;
}
return e;
}
/* arc set-reg-exists ($reg_name)+
* Accepts any amount of register names - will set them as existing in a loop.*/
COMMAND_HANDLER(arc_set_reg_exists)
{
struct target * const target = get_current_target(CMD_CTX);
if (!target) {
command_print(CMD, "Unable to get current target.");
return JIM_ERR;
}
if (!CMD_ARGC) {
command_print(CMD, "At least one register name must be specified.");
return ERROR_COMMAND_SYNTAX_ERROR;
}
for (unsigned int i = 0; i < CMD_ARGC; i++) {
const char * const reg_name = CMD_ARGV[i];
struct reg * const r = arc_reg_get_by_name(target->reg_cache, reg_name, true);
if (!r) {
command_print(CMD, "Register `%s' is not found.", reg_name);
return ERROR_COMMAND_ARGUMENT_INVALID;
}
r->exist = true;
}
return JIM_OK;
}
/* arc reg-field ($reg_name) ($reg_field)
* Reads struct type register field */
static int jim_arc_get_reg_field(Jim_Interp *interp, int argc, Jim_Obj * const *argv)
{
Jim_GetOptInfo goi;
const char *reg_name, *field_name;
uint32_t value;
int retval;
JIM_CHECK_RETVAL(Jim_GetOpt_Setup(&goi, interp, argc-1, argv+1));
LOG_DEBUG("Reading register field");
if (goi.argc != 2) {
if (!goi.argc)
Jim_WrongNumArgs(interp, goi.argc, goi.argv, "<regname> <fieldname>");
else if (goi.argc == 1)
Jim_WrongNumArgs(interp, goi.argc, goi.argv, "<fieldname>");
else
Jim_WrongNumArgs(interp, goi.argc, goi.argv, "<regname> <fieldname>");
return ERROR_COMMAND_SYNTAX_ERROR;
}
JIM_CHECK_RETVAL(Jim_GetOpt_String(&goi, &reg_name, NULL));
JIM_CHECK_RETVAL(Jim_GetOpt_String(&goi, &field_name, NULL));
assert(reg_name);
assert(field_name);
struct command_context * const ctx = current_command_context(interp);
assert(ctx);
struct target * const target = get_current_target(ctx);
if (!target) {
Jim_SetResultFormatted(goi.interp, "No current target");
return JIM_ERR;
}
retval = arc_reg_get_field(target, reg_name, field_name, &value);
switch (retval) {
case ERROR_OK:
break;
case ERROR_ARC_REGISTER_NOT_FOUND:
Jim_SetResultFormatted(goi.interp,
"Register `%s' has not been found.", reg_name);
return ERROR_COMMAND_ARGUMENT_INVALID;
case ERROR_ARC_REGISTER_IS_NOT_STRUCT:
Jim_SetResultFormatted(goi.interp,
"Register `%s' must have 'struct' type.", reg_name);
return ERROR_COMMAND_ARGUMENT_INVALID;
case ERROR_ARC_REGISTER_FIELD_NOT_FOUND:
Jim_SetResultFormatted(goi.interp,
"Field `%s' has not been found in register `%s'.",
field_name, reg_name);
return ERROR_COMMAND_ARGUMENT_INVALID;
case ERROR_ARC_FIELD_IS_NOT_BITFIELD:
Jim_SetResultFormatted(goi.interp,
"Field `%s' is not a 'bitfield' field in a structure.",
field_name);
return ERROR_COMMAND_ARGUMENT_INVALID;
default:
/* Pass through other errors. */
return retval;
}
Jim_SetResultInt(interp, value);
return JIM_OK;
}
COMMAND_HANDLER(arc_l1_cache_disable_auto_cmd)
{
bool value;
int retval = 0;
struct arc_common *arc = target_to_arc(get_current_target(CMD_CTX));
retval = CALL_COMMAND_HANDLER(handle_command_parse_bool,
&value, "target has caches enabled");
arc->has_l2cache = value;
arc->has_dcache = value;
arc->has_icache = value;
return retval;
}
COMMAND_HANDLER(arc_l2_cache_disable_auto_cmd)
{
struct arc_common *arc = target_to_arc(get_current_target(CMD_CTX));
return CALL_COMMAND_HANDLER(handle_command_parse_bool,
&arc->has_l2cache, "target has l2 cache enabled");
}
static int jim_handle_actionpoints_num(Jim_Interp *interp, int argc,
Jim_Obj * const *argv)
{
Jim_GetOptInfo goi;
Jim_GetOpt_Setup(&goi, interp, argc - 1, argv + 1);
LOG_DEBUG("-");
if (goi.argc >= 2) {
Jim_WrongNumArgs(interp, goi.argc, goi.argv, "[<unsigned integer>]");
return JIM_ERR;
}
struct command_context *context = current_command_context(interp);
assert(context);
struct target *target = get_current_target(context);
if (!target) {
Jim_SetResultFormatted(goi.interp, "No current target");
return JIM_ERR;
}
struct arc_common *arc = target_to_arc(target);
/* It is not possible to pass &arc->actionpoints_num directly to
* handle_command_parse_uint, because this value should be valid during
* "actionpoint reset, initiated by arc_set_actionpoints_num. */
uint32_t ap_num = arc->actionpoints_num;
if (goi.argc == 1) {
JIM_CHECK_RETVAL(arc_cmd_jim_get_uint32(&goi, &ap_num));
int e = arc_set_actionpoints_num(target, ap_num);
if (e != ERROR_OK) {
Jim_SetResultFormatted(goi.interp,
"Failed to set number of actionpoints");
return JIM_ERR;
}
}
Jim_SetResultInt(interp, ap_num);
return JIM_OK;
}
/* ----- Exported target commands ------------------------------------------ */
const struct command_registration arc_l2_cache_group_handlers[] = {
{
.name = "auto",
.handler = arc_l2_cache_disable_auto_cmd,
.mode = COMMAND_ANY,
.usage = "(1|0)",
.help = "Disable or enable L2",
},
COMMAND_REGISTRATION_DONE
};
const struct command_registration arc_cache_group_handlers[] = {
{
.name = "auto",
.handler = arc_l1_cache_disable_auto_cmd,
.mode = COMMAND_ANY,
.help = "Disable or enable L1",
.usage = "(1|0)",
},
{
.name = "l2",
.mode = COMMAND_ANY,
.help = "L2 cache command group",
.usage = "",
.chain = arc_l2_cache_group_handlers,
},
COMMAND_REGISTRATION_DONE
};
static const struct command_registration arc_core_command_handlers[] = {
{
.name = "add-reg-type-flags",
.jim_handler = jim_arc_add_reg_type_flags,
.mode = COMMAND_CONFIG,
.usage = "-name <string> -flag <name> <position> "
"[-flag <name> <position>]...",
.help = "Add new 'flags' register data type. Only single bit flags "
"are supported. Type name is global. Bitsize of register is fixed "
"at 32 bits.",
},
{
.name = "add-reg-type-struct",
.jim_handler = jim_arc_add_reg_type_struct,
.mode = COMMAND_CONFIG,
.usage = "-name <string> -bitfield <name> <start> <end> "
"[-bitfield <name> <start> <end>]...",
.help = "Add new 'struct' register data type. Only bit-fields are "
"supported so far, which means that for each bitfield start and end "
"position bits must be specified. GDB also support type-fields, "
"where common type can be used instead. Type name is global. Bitsize of "
"register is fixed at 32 bits.",
},
{
.name = "add-reg",
.jim_handler = jim_arc_add_reg,
.mode = COMMAND_CONFIG,
.usage = "-name <string> -num <int> -feature <string> [-gdbnum <int>] "
"[-core|-bcr] [-type <type_name>] [-g]",
.help = "Add new register. Name, architectural number and feature name "
"are required options. GDB regnum will default to previous register "
"(gdbnum + 1) and shouldn't be specified in most cases. Type "
"defaults to default GDB 'int'.",
},
{
.name = "set-reg-exists",
.handler = arc_set_reg_exists,
.mode = COMMAND_ANY,
.usage = "<register-name> [<register-name>]...",
.help = "Set that register exists. Accepts multiple register names as "
"arguments.",
},
{
.name = "get-reg-field",
.jim_handler = jim_arc_get_reg_field,
.mode = COMMAND_ANY,
.usage = "<regname> <field_name>",
.help = "Returns value of field in a register with 'struct' type.",
},
{
.name = "jtag",
.mode = COMMAND_ANY,
.help = "ARC JTAG specific commands",
.usage = "",
.chain = arc_jtag_command_group,
},
{
.name = "cache",
.mode = COMMAND_ANY,
.help = "cache command group",
.usage = "",
.chain = arc_cache_group_handlers,
},
{
.name = "num-actionpoints",
.jim_handler = jim_handle_actionpoints_num,
.mode = COMMAND_ANY,
.usage = "[<unsigned integer>]",
.help = "Prints or sets amount of actionpoints in the processor.",
},
COMMAND_REGISTRATION_DONE
};
const struct command_registration arc_monitor_command_handlers[] = {
{
.name = "arc",
.mode = COMMAND_ANY,
.help = "ARC monitor command group",
.usage = "",
.chain = arc_core_command_handlers,
},
COMMAND_REGISTRATION_DONE
};
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