X-Git-Url: https://review.openocd.org/gitweb?p=openocd.git;a=blobdiff_plain;f=src%2Ftarget%2Fetm.c;h=53d31a1538421beb59d7381ad13fd53129d84e6e;hp=fe4ac77f6dd7386456b69edc828e17981a14a57d;hb=e740536568f5943748f2159f0ef8baa4ab37dcb9;hpb=687a9553c9cc74a7ca3d3ac5f2470b34e7cc623b diff --git a/src/target/etm.c b/src/target/etm.c index fe4ac77f6d..53d31a1538 100644 --- a/src/target/etm.c +++ b/src/target/etm.c @@ -1,1863 +1,2068 @@ -/*************************************************************************** - * Copyright (C) 2005 by Dominic Rath * - * Dominic.Rath@gmx.de * - * * - * 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 - -#include "etm.h" -#include "etb.h" - -#include "armv4_5.h" -#include "arm7_9_common.h" -#include "arm_disassembler.h" -#include "arm_simulator.h" - -#include "log.h" -#include "arm_jtag.h" -#include "types.h" -#include "binarybuffer.h" -#include "target.h" -#include "register.h" -#include "jtag.h" -#include "fileio.h" - -#include - -/* ETM register access functionality - * - */ - -bitfield_desc_t etm_comms_ctrl_bitfield_desc[] = -{ - {"R", 1}, - {"W", 1}, - {"reserved", 26}, - {"version", 4} -}; - -int etm_reg_arch_info[] = -{ - 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, - 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, - 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, - 0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f, - 0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27, - 0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d, 0x2e, 0x2f, - 0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, - 0x38, 0x39, 0x3a, 0x3b, 0x3c, 0x3d, 0x3e, 0x3f, - 0x40, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47, - 0x48, 0x49, 0x4a, 0x4b, 0x4c, 0x4d, 0x4e, 0x4f, - 0x50, 0x51, 0x52, 0x53, 0x54, 0x55, 0x56, 0x57, - 0x58, 0x59, 0x5a, 0x5b, 0x5c, 0x5d, 0x5e, 0x5f, - 0x60, 0x61, 0x62, 0x63, 0x64, 0x65, 0x67, - 0x68, 0x69, 0x6a, 0x6b, 0x6c, 0x6d, 0x6e, 0x6f, -}; - -int etm_reg_arch_size_info[] = -{ - 32, 32, 17, 8, 3, 9, 32, 16, - 17, 26, 25, 8, 17, 32, 32, 17, - 32, 32, 32, 32, 32, 32, 32, 32, - 32, 32, 32, 32, 32, 32, 32, 32, - 7, 7, 7, 7, 7, 7, 7, 7, - 7, 7, 7, 7, 7, 7, 7, 7, - 32, 32, 32, 32, 32, 32, 32, 32, - 32, 32, 32, 32, 32, 32, 32, 32, - 32, 32, 32, 32, 32, 32, 32, 32, - 32, 32, 32, 32, 32, 32, 32, 32, - 16, 16, 16, 16, 18, 18, 18, 18, - 17, 17, 17, 17, 16, 16, 16, 16, - 17, 17, 17, 17, 17, 17, 2, - 17, 17, 17, 17, 32, 32, 32, 32 -}; - -char* etm_reg_list[] = -{ - "ETM_CTRL", - "ETM_CONFIG", - "ETM_TRIG_EVENT", - "ETM_MMD_CTRL", - "ETM_STATUS", - "ETM_SYS_CONFIG", - "ETM_TRACE_RESOURCE_CTRL", - "ETM_TRACE_EN_CTRL2", - "ETM_TRACE_EN_EVENT", - "ETM_TRACE_EN_CTRL1", - "ETM_FIFOFULL_REGION", - "ETM_FIFOFULL_LEVEL", - "ETM_VIEWDATA_EVENT", - "ETM_VIEWDATA_CTRL1", - "ETM_VIEWDATA_CTRL2", - "ETM_VIEWDATA_CTRL3", - "ETM_ADDR_COMPARATOR_VALUE1", - "ETM_ADDR_COMPARATOR_VALUE2", - "ETM_ADDR_COMPARATOR_VALUE3", - "ETM_ADDR_COMPARATOR_VALUE4", - "ETM_ADDR_COMPARATOR_VALUE5", - "ETM_ADDR_COMPARATOR_VALUE6", - "ETM_ADDR_COMPARATOR_VALUE7", - "ETM_ADDR_COMPARATOR_VALUE8", - "ETM_ADDR_COMPARATOR_VALUE9", - "ETM_ADDR_COMPARATOR_VALUE10", - "ETM_ADDR_COMPARATOR_VALUE11", - "ETM_ADDR_COMPARATOR_VALUE12", - "ETM_ADDR_COMPARATOR_VALUE13", - "ETM_ADDR_COMPARATOR_VALUE14", - "ETM_ADDR_COMPARATOR_VALUE15", - "ETM_ADDR_COMPARATOR_VALUE16", - "ETM_ADDR_ACCESS_TYPE1", - "ETM_ADDR_ACCESS_TYPE2", - "ETM_ADDR_ACCESS_TYPE3", - "ETM_ADDR_ACCESS_TYPE4", - "ETM_ADDR_ACCESS_TYPE5", - "ETM_ADDR_ACCESS_TYPE6", - "ETM_ADDR_ACCESS_TYPE7", - "ETM_ADDR_ACCESS_TYPE8", - "ETM_ADDR_ACCESS_TYPE9", - "ETM_ADDR_ACCESS_TYPE10", - "ETM_ADDR_ACCESS_TYPE11", - "ETM_ADDR_ACCESS_TYPE12", - "ETM_ADDR_ACCESS_TYPE13", - "ETM_ADDR_ACCESS_TYPE14", - "ETM_ADDR_ACCESS_TYPE15", - "ETM_ADDR_ACCESS_TYPE16", - "ETM_DATA_COMPARATOR_VALUE1", - "ETM_DATA_COMPARATOR_VALUE2", - "ETM_DATA_COMPARATOR_VALUE3", - "ETM_DATA_COMPARATOR_VALUE4", - "ETM_DATA_COMPARATOR_VALUE5", - "ETM_DATA_COMPARATOR_VALUE6", - "ETM_DATA_COMPARATOR_VALUE7", - "ETM_DATA_COMPARATOR_VALUE8", - "ETM_DATA_COMPARATOR_VALUE9", - "ETM_DATA_COMPARATOR_VALUE10", - "ETM_DATA_COMPARATOR_VALUE11", - "ETM_DATA_COMPARATOR_VALUE12", - "ETM_DATA_COMPARATOR_VALUE13", - "ETM_DATA_COMPARATOR_VALUE14", - "ETM_DATA_COMPARATOR_VALUE15", - "ETM_DATA_COMPARATOR_VALUE16", - "ETM_DATA_COMPARATOR_MASK1", - "ETM_DATA_COMPARATOR_MASK2", - "ETM_DATA_COMPARATOR_MASK3", - "ETM_DATA_COMPARATOR_MASK4", - "ETM_DATA_COMPARATOR_MASK5", - "ETM_DATA_COMPARATOR_MASK6", - "ETM_DATA_COMPARATOR_MASK7", - "ETM_DATA_COMPARATOR_MASK8", - "ETM_DATA_COMPARATOR_MASK9", - "ETM_DATA_COMPARATOR_MASK10", - "ETM_DATA_COMPARATOR_MASK11", - "ETM_DATA_COMPARATOR_MASK12", - "ETM_DATA_COMPARATOR_MASK13", - "ETM_DATA_COMPARATOR_MASK14", - "ETM_DATA_COMPARATOR_MASK15", - "ETM_DATA_COMPARATOR_MASK16", - "ETM_COUNTER_INITAL_VALUE1", - "ETM_COUNTER_INITAL_VALUE2", - "ETM_COUNTER_INITAL_VALUE3", - "ETM_COUNTER_INITAL_VALUE4", - "ETM_COUNTER_ENABLE1", - "ETM_COUNTER_ENABLE2", - "ETM_COUNTER_ENABLE3", - "ETM_COUNTER_ENABLE4", - "ETM_COUNTER_RELOAD_VALUE1", - "ETM_COUNTER_RELOAD_VALUE2", - "ETM_COUNTER_RELOAD_VALUE3", - "ETM_COUNTER_RELOAD_VALUE4", - "ETM_COUNTER_VALUE1", - "ETM_COUNTER_VALUE2", - "ETM_COUNTER_VALUE3", - "ETM_COUNTER_VALUE4", - "ETM_SEQUENCER_CTRL1", - "ETM_SEQUENCER_CTRL2", - "ETM_SEQUENCER_CTRL3", - "ETM_SEQUENCER_CTRL4", - "ETM_SEQUENCER_CTRL5", - "ETM_SEQUENCER_CTRL6", - "ETM_SEQUENCER_STATE", - "ETM_EXTERNAL_OUTPUT1", - "ETM_EXTERNAL_OUTPUT2", - "ETM_EXTERNAL_OUTPUT3", - "ETM_EXTERNAL_OUTPUT4", - "ETM_CONTEXTID_COMPARATOR_VALUE1", - "ETM_CONTEXTID_COMPARATOR_VALUE2", - "ETM_CONTEXTID_COMPARATOR_VALUE3", - "ETM_CONTEXTID_COMPARATOR_MASK" -}; - -int etm_reg_arch_type = -1; - -int etm_get_reg(reg_t *reg); -int etm_set_reg(reg_t *reg, u32 value); -int etm_set_reg_w_exec(reg_t *reg, u8 *buf); - -int etm_write_reg(reg_t *reg, u32 value); -int etm_read_reg(reg_t *reg); - -command_t *etm_cmd = NULL; - -reg_cache_t* etm_build_reg_cache(target_t *target, arm_jtag_t *jtag_info, etm_context_t *etm_ctx) -{ - reg_cache_t *reg_cache = malloc(sizeof(reg_cache_t)); - reg_t *reg_list = NULL; - etm_reg_t *arch_info = NULL; - int num_regs = sizeof(etm_reg_arch_info)/sizeof(int); - int i; - u32 etm_ctrl_value; - - /* register a register arch-type for etm registers only once */ - if (etm_reg_arch_type == -1) - etm_reg_arch_type = register_reg_arch_type(etm_get_reg, etm_set_reg_w_exec); - - /* the actual registers are kept in two arrays */ - reg_list = calloc(num_regs, sizeof(reg_t)); - arch_info = calloc(num_regs, sizeof(etm_reg_t)); - - /* fill in values for the reg cache */ - reg_cache->name = "etm registers"; - reg_cache->next = NULL; - reg_cache->reg_list = reg_list; - reg_cache->num_regs = num_regs; - - /* set up registers */ - for (i = 0; i < num_regs; i++) - { - reg_list[i].name = etm_reg_list[i]; - reg_list[i].size = 32; - reg_list[i].dirty = 0; - reg_list[i].valid = 0; - reg_list[i].bitfield_desc = NULL; - reg_list[i].num_bitfields = 0; - reg_list[i].value = calloc(1, 4); - reg_list[i].arch_info = &arch_info[i]; - reg_list[i].arch_type = etm_reg_arch_type; - reg_list[i].size = etm_reg_arch_size_info[i]; - arch_info[i].addr = etm_reg_arch_info[i]; - arch_info[i].jtag_info = jtag_info; - } - - /* initialize some ETM control register settings */ - etm_get_reg(®_list[ETM_CTRL]); - etm_ctrl_value = buf_get_u32(reg_list[ETM_CTRL].value, 0, reg_list[ETM_CTRL].size); - - /* clear the ETM powerdown bit (0) */ - etm_ctrl_value &= ~0x1; - - /* configure port width (6:4), mode (17:16) and clocking (13) */ - etm_ctrl_value = (etm_ctrl_value & - ~ETM_PORT_WIDTH_MASK & ~ETM_PORT_MODE_MASK & ~ETM_PORT_CLOCK_MASK) - | etm_ctx->portmode; - - buf_set_u32(reg_list[ETM_CTRL].value, 0, reg_list[ETM_CTRL].size, etm_ctrl_value); - etm_store_reg(®_list[ETM_CTRL]); - - /* the ETM might have an ETB connected */ - if (strcmp(etm_ctx->capture_driver->name, "etb") == 0) - { - etb_t *etb = etm_ctx->capture_driver_priv; - - if (!etb) - { - ERROR("etb selected as etm capture driver, but no ETB configured"); - return ERROR_OK; - } - - reg_cache->next = etb_build_reg_cache(etb); - - etb->reg_cache = reg_cache->next; - } - - if (etm_ctx->capture_driver->init(etm_ctx) != ERROR_OK) - { - ERROR("ETM capture driver initialization failed"); - exit(-1); - } - - return reg_cache; -} - -int etm_get_reg(reg_t *reg) -{ - if (etm_read_reg(reg) != ERROR_OK) - { - ERROR("BUG: error scheduling etm register read"); - exit(-1); - } - - if (jtag_execute_queue() != ERROR_OK) - { - ERROR("register read failed"); - } - - return ERROR_OK; -} - -int etm_read_reg_w_check(reg_t *reg, u8* check_value, u8* check_mask) -{ - etm_reg_t *etm_reg = reg->arch_info; - u8 reg_addr = etm_reg->addr & 0x7f; - scan_field_t fields[3]; - - DEBUG("%i", etm_reg->addr); - - jtag_add_end_state(TAP_RTI); - arm_jtag_scann(etm_reg->jtag_info, 0x6); - arm_jtag_set_instr(etm_reg->jtag_info, etm_reg->jtag_info->intest_instr, NULL); - - fields[0].device = etm_reg->jtag_info->chain_pos; - fields[0].num_bits = 32; - fields[0].out_value = reg->value; - fields[0].out_mask = NULL; - fields[0].in_value = NULL; - fields[0].in_check_value = NULL; - fields[0].in_check_mask = NULL; - fields[0].in_handler = NULL; - fields[0].in_handler_priv = NULL; - - fields[1].device = etm_reg->jtag_info->chain_pos; - fields[1].num_bits = 7; - fields[1].out_value = malloc(1); - buf_set_u32(fields[1].out_value, 0, 7, reg_addr); - fields[1].out_mask = NULL; - fields[1].in_value = NULL; - fields[1].in_check_value = NULL; - fields[1].in_check_mask = NULL; - fields[1].in_handler = NULL; - fields[1].in_handler_priv = NULL; - - fields[2].device = etm_reg->jtag_info->chain_pos; - fields[2].num_bits = 1; - fields[2].out_value = malloc(1); - buf_set_u32(fields[2].out_value, 0, 1, 0); - fields[2].out_mask = NULL; - fields[2].in_value = NULL; - fields[2].in_check_value = NULL; - fields[2].in_check_mask = NULL; - fields[2].in_handler = NULL; - fields[2].in_handler_priv = NULL; - - jtag_add_dr_scan(3, fields, -1); - - fields[0].in_value = reg->value; - jtag_set_check_value(fields+0, check_value, check_mask, NULL); - - jtag_add_dr_scan(3, fields, -1); - - free(fields[1].out_value); - free(fields[2].out_value); - - return ERROR_OK; -} - -int etm_read_reg(reg_t *reg) -{ - return etm_read_reg_w_check(reg, NULL, NULL); -} - -int etm_set_reg(reg_t *reg, u32 value) -{ - if (etm_write_reg(reg, value) != ERROR_OK) - { - ERROR("BUG: error scheduling etm register write"); - exit(-1); - } - - buf_set_u32(reg->value, 0, reg->size, value); - reg->valid = 1; - reg->dirty = 0; - - return ERROR_OK; -} - -int etm_set_reg_w_exec(reg_t *reg, u8 *buf) -{ - etm_set_reg(reg, buf_get_u32(buf, 0, reg->size)); - - if (jtag_execute_queue() != ERROR_OK) - { - ERROR("register write failed"); - exit(-1); - } - return ERROR_OK; -} - -int etm_write_reg(reg_t *reg, u32 value) -{ - etm_reg_t *etm_reg = reg->arch_info; - u8 reg_addr = etm_reg->addr & 0x7f; - scan_field_t fields[3]; - - DEBUG("%i: 0x%8.8x", etm_reg->addr, value); - - jtag_add_end_state(TAP_RTI); - arm_jtag_scann(etm_reg->jtag_info, 0x6); - arm_jtag_set_instr(etm_reg->jtag_info, etm_reg->jtag_info->intest_instr, NULL); - - fields[0].device = etm_reg->jtag_info->chain_pos; - fields[0].num_bits = 32; - fields[0].out_value = malloc(4); - buf_set_u32(fields[0].out_value, 0, 32, value); - fields[0].out_mask = NULL; - fields[0].in_value = NULL; - fields[0].in_check_value = NULL; - fields[0].in_check_mask = NULL; - fields[0].in_handler = NULL; - fields[0].in_handler_priv = NULL; - - fields[1].device = etm_reg->jtag_info->chain_pos; - fields[1].num_bits = 7; - fields[1].out_value = malloc(1); - buf_set_u32(fields[1].out_value, 0, 7, reg_addr); - fields[1].out_mask = NULL; - fields[1].in_value = NULL; - fields[1].in_check_value = NULL; - fields[1].in_check_mask = NULL; - fields[1].in_handler = NULL; - fields[1].in_handler_priv = NULL; - - fields[2].device = etm_reg->jtag_info->chain_pos; - fields[2].num_bits = 1; - fields[2].out_value = malloc(1); - buf_set_u32(fields[2].out_value, 0, 1, 1); - fields[2].out_mask = NULL; - fields[2].in_value = NULL; - fields[2].in_check_value = NULL; - fields[2].in_check_mask = NULL; - fields[2].in_handler = NULL; - fields[2].in_handler_priv = NULL; - - jtag_add_dr_scan(3, fields, -1); - - free(fields[0].out_value); - free(fields[1].out_value); - free(fields[2].out_value); - - return ERROR_OK; -} - -int etm_store_reg(reg_t *reg) -{ - return etm_write_reg(reg, buf_get_u32(reg->value, 0, reg->size)); -} - -/* ETM trace analysis functionality - * - */ -extern etm_capture_driver_t etb_capture_driver; -extern etm_capture_driver_t etm_dummy_capture_driver; -#if BUILD_OOCD_TRACE == 1 -extern etm_capture_driver_t oocd_trace_capture_driver; -#endif - -etm_capture_driver_t *etm_capture_drivers[] = -{ - &etb_capture_driver, - &etm_dummy_capture_driver, -#if BUILD_OOCD_TRACE == 1 - &oocd_trace_capture_driver, -#endif - NULL -}; - -char *etmv1v1_branch_reason_strings[] = -{ - "normal PC change", - "tracing enabled", - "trace restarted after overflow", - "exit from debug", - "periodic synchronization", - "reserved", - "reserved", - "reserved", -}; - -int etm_read_instruction(etm_context_t *ctx, arm_instruction_t *instruction) -{ - int i; - int section = -1; - u32 size_read; - u32 opcode; - int retval; - - if (!ctx->image) - return ERROR_TRACE_IMAGE_UNAVAILABLE; - - /* search for the section the current instruction belongs to */ - for (i = 0; i < ctx->image->num_sections; i++) - { - if ((ctx->image->sections[i].base_address <= ctx->current_pc) && - (ctx->image->sections[i].base_address + ctx->image->sections[i].size > ctx->current_pc)) - { - section = i; - break; - } - } - - if (section == -1) - { - /* current instruction couldn't be found in the image */ - return ERROR_TRACE_INSTRUCTION_UNAVAILABLE; - } - - if (ctx->core_state == ARMV4_5_STATE_ARM) - { - u8 buf[4]; - if ((retval = image_read_section(ctx->image, section, - ctx->current_pc - ctx->image->sections[section].base_address, - 4, buf, &size_read)) != ERROR_OK) - { - ERROR("error while reading instruction: %i", retval); - return ERROR_TRACE_INSTRUCTION_UNAVAILABLE; - } - opcode = target_buffer_get_u32(ctx->target, buf); - arm_evaluate_opcode(opcode, ctx->current_pc, instruction); - } - else if (ctx->core_state == ARMV4_5_STATE_THUMB) - { - u8 buf[2]; - if ((retval = image_read_section(ctx->image, section, - ctx->current_pc - ctx->image->sections[section].base_address, - 2, buf, &size_read)) != ERROR_OK) - { - ERROR("error while reading instruction: %i", retval); - return ERROR_TRACE_INSTRUCTION_UNAVAILABLE; - } - opcode = target_buffer_get_u16(ctx->target, buf); - thumb_evaluate_opcode(opcode, ctx->current_pc, instruction); - } - else if (ctx->core_state == ARMV4_5_STATE_JAZELLE) - { - ERROR("BUG: tracing of jazelle code not supported"); - exit(-1); - } - else - { - ERROR("BUG: unknown core state encountered"); - exit(-1); - } - - return ERROR_OK; -} - -int etmv1_next_packet(etm_context_t *ctx, u8 *packet, int apo) -{ - while (ctx->data_index < ctx->trace_depth) - { - /* if the caller specified an address packet offset, skip until the - * we reach the n-th cycle marked with tracesync */ - if (apo > 0) - { - if (ctx->trace_data[ctx->data_index].flags & ETMV1_TRACESYNC_CYCLE) - apo--; - - if (apo > 0) - { - ctx->data_index++; - ctx->data_half = 0; - } - continue; - } - - /* no tracedata output during a TD cycle - * or in a trigger cycle */ - if ((ctx->trace_data[ctx->data_index].pipestat == STAT_TD) - || (ctx->trace_data[ctx->data_index].flags & ETMV1_TRIGGER_CYCLE)) - { - ctx->data_index++; - ctx->data_half = 0; - continue; - } - - if ((ctx->portmode & ETM_PORT_WIDTH_MASK) == ETM_PORT_16BIT) - { - if (ctx->data_half == 0) - { - *packet = ctx->trace_data[ctx->data_index].packet & 0xff; - ctx->data_half = 1; - } - else - { - *packet = (ctx->trace_data[ctx->data_index].packet & 0xff00) >> 8; - ctx->data_half = 0; - ctx->data_index++; - } - } - else if ((ctx->portmode & ETM_PORT_WIDTH_MASK) == ETM_PORT_8BIT) - { - *packet = ctx->trace_data[ctx->data_index].packet & 0xff; - ctx->data_index++; - } - else - { - /* on a 4-bit port, a packet will be output during two consecutive cycles */ - if (ctx->data_index > (ctx->trace_depth - 2)) - return -1; - - *packet = ctx->trace_data[ctx->data_index].packet & 0xf; - *packet |= (ctx->trace_data[ctx->data_index + 1].packet & 0xf) << 4; - ctx->data_index += 2; - } - - return 0; - } - - return -1; -} - -int etmv1_branch_address(etm_context_t *ctx) -{ - int retval; - u8 packet; - int shift = 0; - int apo; - int i; - - /* quit analysis if less than two cycles are left in the trace - * because we can't extract the APO */ - if (ctx->data_index > (ctx->trace_depth - 2)) - return -1; - - /* a BE could be output during an APO cycle, skip the current - * and continue with the new one */ - if (ctx->trace_data[ctx->pipe_index + 1].pipestat & 0x4) - return 1; - if (ctx->trace_data[ctx->pipe_index + 2].pipestat & 0x4) - return 2; - - /* address packet offset encoded in the next two cycles' pipestat bits */ - apo = ctx->trace_data[ctx->pipe_index + 1].pipestat & 0x3; - apo |= (ctx->trace_data[ctx->pipe_index + 2].pipestat & 0x3) << 2; - - /* count number of tracesync cycles between current pipe_index and data_index - * i.e. the number of tracesyncs that data_index already passed by - * to subtract them from the APO */ - for (i = ctx->pipe_index; i < ctx->data_index; i++) - { - if (ctx->trace_data[ctx->pipe_index + 1].pipestat & ETMV1_TRACESYNC_CYCLE) - apo--; - } - - /* extract up to four 7-bit packets */ - do { - if ((retval = etmv1_next_packet(ctx, &packet, (shift == 0) ? apo + 1 : 0)) != 0) - return -1; - ctx->last_branch &= ~(0x7f << shift); - ctx->last_branch |= (packet & 0x7f) << shift; - shift += 7; - } while ((packet & 0x80) && (shift < 28)); - - /* one last packet holding 4 bits of the address, plus the branch reason code */ - if ((shift == 28) && (packet & 0x80)) - { - if ((retval = etmv1_next_packet(ctx, &packet, 0)) != 0) - return -1; - ctx->last_branch &= 0x0fffffff; - ctx->last_branch |= (packet & 0x0f) << 28; - ctx->last_branch_reason = (packet & 0x70) >> 4; - shift += 4; - } - else - { - ctx->last_branch_reason = 0; - } - - if (shift == 32) - { - ctx->pc_ok = 1; - } - - /* if a full address was output, we might have branched into Jazelle state */ - if ((shift == 32) && (packet & 0x80)) - { - ctx->core_state = ARMV4_5_STATE_JAZELLE; - } - else - { - /* if we didn't branch into Jazelle state, the current processor state is - * encoded in bit 0 of the branch target address */ - if (ctx->last_branch & 0x1) - { - ctx->core_state = ARMV4_5_STATE_THUMB; - ctx->last_branch &= ~0x1; - } - else - { - ctx->core_state = ARMV4_5_STATE_ARM; - ctx->last_branch &= ~0x3; - } - } - - return 0; -} - -int etmv1_data(etm_context_t *ctx, int size, u32 *data) -{ - int j; - u8 buf[4]; - int retval; - - for (j = 0; j < size; j++) - { - if ((retval = etmv1_next_packet(ctx, &buf[j], 0)) != 0) - return -1; - } - - if (size == 8) - ERROR("TODO: add support for 64-bit values"); - else if (size == 4) - *data = target_buffer_get_u32(ctx->target, buf); - else if (size == 2) - *data = target_buffer_get_u16(ctx->target, buf); - else if (size == 1) - *data = buf[0]; - - return 0; -} - -int etmv1_analyze_trace(etm_context_t *ctx, struct command_context_s *cmd_ctx) -{ - int retval; - arm_instruction_t instruction; - - /* read the trace data if it wasn't read already */ - if (ctx->trace_depth == 0) - ctx->capture_driver->read_trace(ctx); - - /* start at the beginning of the captured trace */ - ctx->pipe_index = 0; - ctx->data_index = 0; - ctx->data_half = 0; - - /* neither the PC nor the data pointer are valid */ - ctx->pc_ok = 0; - ctx->ptr_ok = 0; - - while (ctx->pipe_index < ctx->trace_depth) - { - u8 pipestat = ctx->trace_data[ctx->pipe_index].pipestat; - u32 next_pc = ctx->current_pc; - u32 old_data_index = ctx->data_index; - u32 old_data_half = ctx->data_half; - u32 old_index = ctx->pipe_index; - u32 last_instruction = ctx->last_instruction; - u32 cycles = 0; - int current_pc_ok = ctx->pc_ok; - - if (ctx->trace_data[ctx->pipe_index].flags & ETMV1_TRIGGER_CYCLE) - { - command_print(cmd_ctx, "--- trigger ---"); - } - - /* instructions execute in IE/D or BE/D cycles */ - if ((pipestat == STAT_IE) || (pipestat == STAT_ID)) - ctx->last_instruction = ctx->pipe_index; - - /* if we don't have a valid pc skip until we reach an indirect branch */ - if ((!ctx->pc_ok) && (pipestat != STAT_BE)) - { - ctx->pipe_index++; - continue; - } - - /* any indirect branch could have interrupted instruction flow - * - the branch reason code could indicate a trace discontinuity - * - a branch to the exception vectors indicates an exception - */ - if ((pipestat == STAT_BE) || (pipestat == STAT_BD)) - { - /* backup current data index, to be able to consume the branch address - * before examining data address and values - */ - old_data_index = ctx->data_index; - old_data_half = ctx->data_half; - - ctx->last_instruction = ctx->pipe_index; - - if ((retval = etmv1_branch_address(ctx)) != 0) - { - /* negative return value from etmv1_branch_address means we ran out of packets, - * quit analysing the trace */ - if (retval < 0) - break; - - /* a positive return values means the current branch was abandoned, - * and a new branch was encountered in cycle ctx->pipe_index + retval; - */ - WARNING("abandoned branch encountered, correctnes of analysis uncertain"); - ctx->pipe_index += retval; - continue; - } - - /* skip over APO cycles */ - ctx->pipe_index += 2; - - switch (ctx->last_branch_reason) - { - case 0x0: /* normal PC change */ - next_pc = ctx->last_branch; - break; - case 0x1: /* tracing enabled */ - command_print(cmd_ctx, "--- tracing enabled at 0x%8.8x ---", ctx->last_branch); - ctx->current_pc = ctx->last_branch; - ctx->pipe_index++; - continue; - break; - case 0x2: /* trace restarted after FIFO overflow */ - command_print(cmd_ctx, "--- trace restarted after FIFO overflow at 0x%8.8x ---", ctx->last_branch); - ctx->current_pc = ctx->last_branch; - ctx->pipe_index++; - continue; - break; - case 0x3: /* exit from debug state */ - command_print(cmd_ctx, "--- exit from debug state at 0x%8.8x ---", ctx->last_branch); - ctx->current_pc = ctx->last_branch; - ctx->pipe_index++; - continue; - break; - case 0x4: /* periodic synchronization point */ - next_pc = ctx->last_branch; - /* if we had no valid PC prior to this synchronization point, - * we have to move on with the next trace cycle - */ - if (!current_pc_ok) - { - command_print(cmd_ctx, "--- periodic synchronization point at 0x%8.8x ---", next_pc); - ctx->current_pc = next_pc; - ctx->pipe_index++; - continue; - } - break; - default: /* reserved */ - ERROR("BUG: branch reason code 0x%x is reserved", ctx->last_branch_reason); - exit(-1); - break; - } - - /* if we got here the branch was a normal PC change - * (or a periodic synchronization point, which means the same for that matter) - * if we didn't accquire a complete PC continue with the next cycle - */ - if (!ctx->pc_ok) - continue; - - /* indirect branch to the exception vector means an exception occured */ - if (((ctx->last_branch >= 0x0) && (ctx->last_branch <= 0x20)) - || ((ctx->last_branch >= 0xffff0000) && (ctx->last_branch <= 0xffff0020))) - { - if ((ctx->last_branch & 0xff) == 0x10) - { - command_print(cmd_ctx, "data abort"); - } - else - { - command_print(cmd_ctx, "exception vector 0x%2.2x", ctx->last_branch); - ctx->current_pc = ctx->last_branch; - ctx->pipe_index++; - continue; - } - } - } - - /* an instruction was executed (or not, depending on the condition flags) - * retrieve it from the image for displaying */ - if (ctx->pc_ok && (pipestat != STAT_WT) && (pipestat != STAT_TD) && - !(((pipestat == STAT_BE) || (pipestat == STAT_BD)) && - ((ctx->last_branch_reason != 0x0) && (ctx->last_branch_reason != 0x4)))) - { - if ((retval = etm_read_instruction(ctx, &instruction)) != ERROR_OK) - { - /* can't continue tracing with no image available */ - if (retval == ERROR_TRACE_IMAGE_UNAVAILABLE) - { - return retval; - } - else if (retval == ERROR_TRACE_INSTRUCTION_UNAVAILABLE) - { - /* TODO: handle incomplete images - * for now we just quit the analsysis*/ - return retval; - } - } - - cycles = old_index - last_instruction; - } - - if ((pipestat == STAT_ID) || (pipestat == STAT_BD)) - { - u32 new_data_index = ctx->data_index; - u32 new_data_half = ctx->data_half; - - /* in case of a branch with data, the branch target address was consumed before - * we temporarily go back to the saved data index */ - if (pipestat == STAT_BD) - { - ctx->data_index = old_data_index; - ctx->data_half = old_data_half; - } - - if (ctx->tracemode & ETMV1_TRACE_ADDR) - { - u8 packet; - int shift = 0; - - do { - if ((retval = etmv1_next_packet(ctx, &packet, 0)) != 0) - return ERROR_ETM_ANALYSIS_FAILED; - ctx->last_ptr &= ~(0x7f << shift); - ctx->last_ptr |= (packet & 0x7f) << shift; - shift += 7; - } while ((packet & 0x80) && (shift < 32)); - - if (shift >= 32) - ctx->ptr_ok = 1; - - if (ctx->ptr_ok) - { - command_print(cmd_ctx, "address: 0x%8.8x", ctx->last_ptr); - } - } - - if (ctx->tracemode & ETMV1_TRACE_DATA) - { - if ((instruction.type == ARM_LDM) || (instruction.type == ARM_STM)) - { - int i; - for (i = 0; i < 16; i++) - { - if (instruction.info.load_store_multiple.register_list & (1 << i)) - { - u32 data; - if (etmv1_data(ctx, 4, &data) != 0) - return ERROR_ETM_ANALYSIS_FAILED; - command_print(cmd_ctx, "data: 0x%8.8x", data); - } - } - } - else if ((instruction.type >= ARM_LDR) && (instruction.type <= ARM_STRH)) - { - u32 data; - if (etmv1_data(ctx, arm_access_size(&instruction), &data) != 0) - return ERROR_ETM_ANALYSIS_FAILED; - command_print(cmd_ctx, "data: 0x%8.8x", data); - } - } - - /* restore data index after consuming BD address and data */ - if (pipestat == STAT_BD) - { - ctx->data_index = new_data_index; - ctx->data_half = new_data_half; - } - } - - /* adjust PC */ - if ((pipestat == STAT_IE) || (pipestat == STAT_ID)) - { - if (((instruction.type == ARM_B) || - (instruction.type == ARM_BL) || - (instruction.type == ARM_BLX)) && - (instruction.info.b_bl_bx_blx.target_address != -1)) - { - next_pc = instruction.info.b_bl_bx_blx.target_address; - } - else - { - next_pc += (ctx->core_state == ARMV4_5_STATE_ARM) ? 4 : 2; - } - } - else if (pipestat == STAT_IN) - { - next_pc += (ctx->core_state == ARMV4_5_STATE_ARM) ? 4 : 2; - } - - if ((pipestat != STAT_TD) && (pipestat != STAT_WT)) - { - char cycles_text[32] = ""; - - /* if the trace was captured with cycle accurate tracing enabled, - * output the number of cycles since the last executed instruction - */ - if (ctx->tracemode & ETMV1_CYCLE_ACCURATE) - { - snprintf(cycles_text, 32, " (%i %s)", - cycles, - (cycles == 1) ? "cycle" : "cycles"); - } - - command_print(cmd_ctx, "%s%s%s", - instruction.text, - (pipestat == STAT_IN) ? " (not executed)" : "", - cycles_text); - - ctx->current_pc = next_pc; - - /* packets for an instruction don't start on or before the preceding - * functional pipestat (i.e. other than WT or TD) - */ - if (ctx->data_index <= ctx->pipe_index) - { - ctx->data_index = ctx->pipe_index + 1; - ctx->data_half = 0; - } - } - - ctx->pipe_index += 1; - } - - return ERROR_OK; -} - -int handle_etm_tracemode_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc) -{ - target_t *target; - armv4_5_common_t *armv4_5; - arm7_9_common_t *arm7_9; - etmv1_tracemode_t tracemode; - - target = get_current_target(cmd_ctx); - - if (arm7_9_get_arch_pointers(target, &armv4_5, &arm7_9) != ERROR_OK) - { - command_print(cmd_ctx, "current target isn't an ARM7/ARM9 target"); - return ERROR_OK; - } - - if (!arm7_9->etm_ctx) - { - command_print(cmd_ctx, "current target doesn't have an ETM configured"); - return ERROR_OK; - } - - tracemode = arm7_9->etm_ctx->tracemode; - - if (argc == 4) - { - if (strcmp(args[0], "none") == 0) - { - tracemode = ETMV1_TRACE_NONE; - } - else if (strcmp(args[0], "data") == 0) - { - tracemode = ETMV1_TRACE_DATA; - } - else if (strcmp(args[0], "address") == 0) - { - tracemode = ETMV1_TRACE_ADDR; - } - else if (strcmp(args[0], "all") == 0) - { - tracemode = ETMV1_TRACE_DATA | ETMV1_TRACE_ADDR; - } - else - { - command_print(cmd_ctx, "invalid option '%s'", args[0]); - return ERROR_OK; - } - - switch (strtol(args[1], NULL, 0)) - { - case 0: - tracemode |= ETMV1_CONTEXTID_NONE; - break; - case 8: - tracemode |= ETMV1_CONTEXTID_8; - break; - case 16: - tracemode |= ETMV1_CONTEXTID_16; - break; - case 32: - tracemode |= ETMV1_CONTEXTID_32; - break; - default: - command_print(cmd_ctx, "invalid option '%s'", args[1]); - return ERROR_OK; - } - - if (strcmp(args[2], "enable") == 0) - { - tracemode |= ETMV1_CYCLE_ACCURATE; - } - else if (strcmp(args[2], "disable") == 0) - { - tracemode |= 0; - } - else - { - command_print(cmd_ctx, "invalid option '%s'", args[2]); - return ERROR_OK; - } - - if (strcmp(args[3], "enable") == 0) - { - tracemode |= ETMV1_BRANCH_OUTPUT; - } - else if (strcmp(args[3], "disable") == 0) - { - tracemode |= 0; - } - else - { - command_print(cmd_ctx, "invalid option '%s'", args[2]); - return ERROR_OK; - } - } - else if (argc != 0) - { - command_print(cmd_ctx, "usage: configure trace mode "); - return ERROR_OK; - } - - command_print(cmd_ctx, "current tracemode configuration:"); - - switch (tracemode & ETMV1_TRACE_MASK) - { - case ETMV1_TRACE_NONE: - command_print(cmd_ctx, "data tracing: none"); - break; - case ETMV1_TRACE_DATA: - command_print(cmd_ctx, "data tracing: data only"); - break; - case ETMV1_TRACE_ADDR: - command_print(cmd_ctx, "data tracing: address only"); - break; - case ETMV1_TRACE_DATA | ETMV1_TRACE_ADDR: - command_print(cmd_ctx, "data tracing: address and data"); - break; - } - - switch (tracemode & ETMV1_CONTEXTID_MASK) - { - case ETMV1_CONTEXTID_NONE: - command_print(cmd_ctx, "contextid tracing: none"); - break; - case ETMV1_CONTEXTID_8: - command_print(cmd_ctx, "contextid tracing: 8 bit"); - break; - case ETMV1_CONTEXTID_16: - command_print(cmd_ctx, "contextid tracing: 16 bit"); - break; - case ETMV1_CONTEXTID_32: - command_print(cmd_ctx, "contextid tracing: 32 bit"); - break; - } - - if (tracemode & ETMV1_CYCLE_ACCURATE) - { - command_print(cmd_ctx, "cycle-accurate tracing enabled"); - } - else - { - command_print(cmd_ctx, "cycle-accurate tracing disabled"); - } - - if (tracemode & ETMV1_BRANCH_OUTPUT) - { - command_print(cmd_ctx, "full branch address output enabled"); - } - else - { - command_print(cmd_ctx, "full branch address output disabled"); - } - - /* only update ETM_CTRL register if tracemode changed */ - if (arm7_9->etm_ctx->tracemode != tracemode) - { - reg_t *etm_ctrl_reg = &arm7_9->etm_ctx->reg_cache->reg_list[ETM_CTRL]; - - etm_get_reg(etm_ctrl_reg); - - buf_set_u32(etm_ctrl_reg->value, 2, 2, tracemode & ETMV1_TRACE_MASK); - buf_set_u32(etm_ctrl_reg->value, 14, 2, (tracemode & ETMV1_CONTEXTID_MASK) >> 4); - buf_set_u32(etm_ctrl_reg->value, 12, 1, (tracemode & ETMV1_CYCLE_ACCURATE) >> 8); - buf_set_u32(etm_ctrl_reg->value, 8, 1, (tracemode & ETMV1_BRANCH_OUTPUT) >> 9); - etm_store_reg(etm_ctrl_reg); - - arm7_9->etm_ctx->tracemode = tracemode; - - /* invalidate old trace data */ - arm7_9->etm_ctx->capture_status = TRACE_IDLE; - if (arm7_9->etm_ctx->trace_depth > 0) - { - free(arm7_9->etm_ctx->trace_data); - arm7_9->etm_ctx->trace_data = NULL; - } - arm7_9->etm_ctx->trace_depth = 0; - } - - return ERROR_OK; -} - -int handle_etm_config_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc) -{ - target_t *target; - armv4_5_common_t *armv4_5; - arm7_9_common_t *arm7_9; - etm_portmode_t portmode = 0x0; - etm_context_t *etm_ctx = malloc(sizeof(etm_context_t)); - int i; - - if (argc != 5) - { - ERROR("incomplete 'etm config ' command"); - exit(-1); - } - - target = get_target_by_num(strtoul(args[0], NULL, 0)); - - if (!target) - { - ERROR("target number '%s' not defined", args[0]); - exit(-1); - } - - if (arm7_9_get_arch_pointers(target, &armv4_5, &arm7_9) != ERROR_OK) - { - command_print(cmd_ctx, "current target isn't an ARM7/ARM9 target"); - return ERROR_OK; - } - - switch (strtoul(args[1], NULL, 0)) - { - case 4: - portmode |= ETM_PORT_4BIT; - break; - case 8: - portmode |= ETM_PORT_8BIT; - break; - case 16: - portmode |= ETM_PORT_16BIT; - break; - default: - command_print(cmd_ctx, "unsupported ETM port width '%s', must be 4, 8 or 16", args[1]); - return ERROR_OK; - } - - if (strcmp("normal", args[2]) == 0) - { - portmode |= ETM_PORT_NORMAL; - } - else if (strcmp("multiplexed", args[2]) == 0) - { - portmode |= ETM_PORT_MUXED; - } - else if (strcmp("demultiplexed", args[2]) == 0) - { - portmode |= ETM_PORT_DEMUXED; - } - else - { - command_print(cmd_ctx, "unsupported ETM port mode '%s', must be 'normal', 'multiplexed' or 'demultiplexed'", args[2]); - return ERROR_OK; - } - - if (strcmp("half", args[3]) == 0) - { - portmode |= ETM_PORT_HALF_CLOCK; - } - else if (strcmp("full", args[3]) == 0) - { - portmode |= ETM_PORT_FULL_CLOCK; - } - else - { - command_print(cmd_ctx, "unsupported ETM port clocking '%s', must be 'full' or 'half'", args[3]); - return ERROR_OK; - } - - for (i=0; etm_capture_drivers[i]; i++) - { - if (strcmp(args[4], etm_capture_drivers[i]->name) == 0) - { - if (etm_capture_drivers[i]->register_commands(cmd_ctx) != ERROR_OK) - { - free(etm_ctx); - exit(-1); - } - - etm_ctx->capture_driver = etm_capture_drivers[i]; - - break; - } - } - - if (!etm_capture_drivers[i]) - { - /* no supported capture driver found, don't register an ETM */ - free(etm_ctx); - ERROR("trace capture driver '%s' not found", args[4]); - return ERROR_OK; - } - - etm_ctx->target = target; - etm_ctx->trigger_percent = 50; - etm_ctx->trace_data = NULL; - etm_ctx->trace_depth = 0; - etm_ctx->portmode = portmode; - etm_ctx->tracemode = 0x0; - etm_ctx->core_state = ARMV4_5_STATE_ARM; - etm_ctx->image = NULL; - etm_ctx->pipe_index = 0; - etm_ctx->data_index = 0; - etm_ctx->current_pc = 0x0; - etm_ctx->pc_ok = 0; - etm_ctx->last_branch = 0x0; - etm_ctx->last_branch_reason = 0x0; - etm_ctx->last_ptr = 0x0; - etm_ctx->ptr_ok = 0x0; - etm_ctx->context_id = 0x0; - etm_ctx->last_instruction = 0; - - arm7_9->etm_ctx = etm_ctx; - - etm_register_user_commands(cmd_ctx); - - return ERROR_OK; -} - -int handle_etm_info_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc) -{ - target_t *target; - armv4_5_common_t *armv4_5; - arm7_9_common_t *arm7_9; - reg_t *etm_config_reg; - reg_t *etm_sys_config_reg; - - int max_port_size; - - target = get_current_target(cmd_ctx); - - if (arm7_9_get_arch_pointers(target, &armv4_5, &arm7_9) != ERROR_OK) - { - command_print(cmd_ctx, "current target isn't an ARM7/ARM9 target"); - return ERROR_OK; - } - - if (!arm7_9->etm_ctx) - { - command_print(cmd_ctx, "current target doesn't have an ETM configured"); - return ERROR_OK; - } - - etm_config_reg = &arm7_9->etm_ctx->reg_cache->reg_list[ETM_CONFIG]; - etm_sys_config_reg = &arm7_9->etm_ctx->reg_cache->reg_list[ETM_SYS_CONFIG]; - - etm_get_reg(etm_config_reg); - command_print(cmd_ctx, "pairs of address comparators: %i", buf_get_u32(etm_config_reg->value, 0, 4)); - command_print(cmd_ctx, "pairs of data comparators: %i", buf_get_u32(etm_config_reg->value, 4, 4)); - command_print(cmd_ctx, "memory map decoders: %i", buf_get_u32(etm_config_reg->value, 8, 5)); - command_print(cmd_ctx, "number of counters: %i", buf_get_u32(etm_config_reg->value, 13, 3)); - command_print(cmd_ctx, "sequencer %spresent", - (buf_get_u32(etm_config_reg->value, 16, 1) == 1) ? "" : "not "); - command_print(cmd_ctx, "number of ext. inputs: %i", buf_get_u32(etm_config_reg->value, 17, 3)); - command_print(cmd_ctx, "number of ext. outputs: %i", buf_get_u32(etm_config_reg->value, 20, 3)); - command_print(cmd_ctx, "FIFO full %spresent", - (buf_get_u32(etm_config_reg->value, 23, 1) == 1) ? "" : "not "); - command_print(cmd_ctx, "protocol version: %i", buf_get_u32(etm_config_reg->value, 28, 3)); - - etm_get_reg(etm_sys_config_reg); - - switch (buf_get_u32(etm_sys_config_reg->value, 0, 3)) - { - case 0: - max_port_size = 4; - break; - case 1: - max_port_size = 8; - break; - case 2: - max_port_size = 16; - break; - } - command_print(cmd_ctx, "max. port size: %i", max_port_size); - - command_print(cmd_ctx, "half-rate clocking %ssupported", - (buf_get_u32(etm_sys_config_reg->value, 3, 1) == 1) ? "" : "not "); - command_print(cmd_ctx, "full-rate clocking %ssupported", - (buf_get_u32(etm_sys_config_reg->value, 4, 1) == 1) ? "" : "not "); - command_print(cmd_ctx, "normal trace format %ssupported", - (buf_get_u32(etm_sys_config_reg->value, 5, 1) == 1) ? "" : "not "); - command_print(cmd_ctx, "multiplex trace format %ssupported", - (buf_get_u32(etm_sys_config_reg->value, 6, 1) == 1) ? "" : "not "); - command_print(cmd_ctx, "demultiplex trace format %ssupported", - (buf_get_u32(etm_sys_config_reg->value, 7, 1) == 1) ? "" : "not "); - command_print(cmd_ctx, "FIFO full %ssupported", - (buf_get_u32(etm_sys_config_reg->value, 8, 1) == 1) ? "" : "not "); - - return ERROR_OK; -} - -int handle_etm_status_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc) -{ - target_t *target; - armv4_5_common_t *armv4_5; - arm7_9_common_t *arm7_9; - trace_status_t trace_status; - - target = get_current_target(cmd_ctx); - - if (arm7_9_get_arch_pointers(target, &armv4_5, &arm7_9) != ERROR_OK) - { - command_print(cmd_ctx, "current target isn't an ARM7/ARM9 target"); - return ERROR_OK; - } - - if (!arm7_9->etm_ctx) - { - command_print(cmd_ctx, "current target doesn't have an ETM configured"); - return ERROR_OK; - } - - trace_status = arm7_9->etm_ctx->capture_driver->status(arm7_9->etm_ctx); - - if (trace_status == TRACE_IDLE) - { - command_print(cmd_ctx, "tracing is idle"); - } - else - { - static char *completed = " completed"; - static char *running = " is running"; - static char *overflowed = ", trace overflowed"; - static char *triggered = ", trace triggered"; - - command_print(cmd_ctx, "trace collection%s%s%s", - (trace_status & TRACE_RUNNING) ? running : completed, - (trace_status & TRACE_OVERFLOWED) ? overflowed : "", - (trace_status & TRACE_TRIGGERED) ? triggered : ""); - - if (arm7_9->etm_ctx->trace_depth > 0) - { - command_print(cmd_ctx, "%i frames of trace data read", arm7_9->etm_ctx->trace_depth); - } - } - - return ERROR_OK; -} - -int handle_etm_image_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc) -{ - target_t *target; - armv4_5_common_t *armv4_5; - arm7_9_common_t *arm7_9; - etm_context_t *etm_ctx; - - if (argc < 1) - { - command_print(cmd_ctx, "usage: etm image [base address] [type]"); - return ERROR_OK; - } - - target = get_current_target(cmd_ctx); - - if (arm7_9_get_arch_pointers(target, &armv4_5, &arm7_9) != ERROR_OK) - { - command_print(cmd_ctx, "current target isn't an ARM7/ARM9 target"); - return ERROR_OK; - } - - if (!(etm_ctx = arm7_9->etm_ctx)) - { - command_print(cmd_ctx, "current target doesn't have an ETM configured"); - return ERROR_OK; - } - - if (etm_ctx->image) - { - image_close(etm_ctx->image); - free(etm_ctx->image); - command_print(cmd_ctx, "previously loaded image found and closed"); - } - - etm_ctx->image = malloc(sizeof(image_t)); - etm_ctx->image->base_address_set = 0; - etm_ctx->image->start_address_set = 0; - - /* a base address isn't always necessary, default to 0x0 (i.e. don't relocate) */ - if (argc >= 2) - { - etm_ctx->image->base_address_set = 1; - etm_ctx->image->base_address = strtoul(args[1], NULL, 0); - } - else - { - etm_ctx->image->base_address_set = 0; - } - - if (image_open(etm_ctx->image, args[0], (argc >= 3) ? args[2] : NULL) != ERROR_OK) - { - command_print(cmd_ctx, "image opening error: %s", etm_ctx->image->error_str); - free(etm_ctx->image); - etm_ctx->image = NULL; - return ERROR_OK; - } - - return ERROR_OK; -} - -int handle_etm_dump_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc) -{ - fileio_t file; - target_t *target; - armv4_5_common_t *armv4_5; - arm7_9_common_t *arm7_9; - etm_context_t *etm_ctx; - int i; - - if (argc != 1) - { - command_print(cmd_ctx, "usage: etm dump "); - return ERROR_OK; - } - - target = get_current_target(cmd_ctx); - - if (arm7_9_get_arch_pointers(target, &armv4_5, &arm7_9) != ERROR_OK) - { - command_print(cmd_ctx, "current target isn't an ARM7/ARM9 target"); - return ERROR_OK; - } - - if (!(etm_ctx = arm7_9->etm_ctx)) - { - command_print(cmd_ctx, "current target doesn't have an ETM configured"); - return ERROR_OK; - } - - if (etm_ctx->capture_driver->status == TRACE_IDLE) - { - command_print(cmd_ctx, "trace capture wasn't enabled, no trace data captured"); - return ERROR_OK; - } - - if (etm_ctx->capture_driver->status(etm_ctx) & TRACE_RUNNING) - { - /* TODO: if on-the-fly capture is to be supported, this needs to be changed */ - command_print(cmd_ctx, "trace capture not completed"); - return ERROR_OK; - } - - /* read the trace data if it wasn't read already */ - if (etm_ctx->trace_depth == 0) - etm_ctx->capture_driver->read_trace(etm_ctx); - - if (fileio_open(&file, args[0], FILEIO_WRITE, FILEIO_BINARY) != ERROR_OK) - { - command_print(cmd_ctx, "file open error: %s", file.error_str); - return ERROR_OK; - } - - fileio_write_u32(&file, etm_ctx->capture_status); - fileio_write_u32(&file, etm_ctx->portmode); - fileio_write_u32(&file, etm_ctx->tracemode); - fileio_write_u32(&file, etm_ctx->trace_depth); - - for (i = 0; i < etm_ctx->trace_depth; i++) - { - fileio_write_u32(&file, etm_ctx->trace_data[i].pipestat); - fileio_write_u32(&file, etm_ctx->trace_data[i].packet); - fileio_write_u32(&file, etm_ctx->trace_data[i].flags); - } - - fileio_close(&file); - - return ERROR_OK; -} - -int handle_etm_load_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc) -{ - fileio_t file; - target_t *target; - armv4_5_common_t *armv4_5; - arm7_9_common_t *arm7_9; - etm_context_t *etm_ctx; - int i; - - if (argc != 1) - { - command_print(cmd_ctx, "usage: etm load "); - return ERROR_OK; - } - - target = get_current_target(cmd_ctx); - - if (arm7_9_get_arch_pointers(target, &armv4_5, &arm7_9) != ERROR_OK) - { - command_print(cmd_ctx, "current target isn't an ARM7/ARM9 target"); - return ERROR_OK; - } - - if (!(etm_ctx = arm7_9->etm_ctx)) - { - command_print(cmd_ctx, "current target doesn't have an ETM configured"); - return ERROR_OK; - } - - if (etm_ctx->capture_driver->status(etm_ctx) & TRACE_RUNNING) - { - command_print(cmd_ctx, "trace capture running, stop first"); - return ERROR_OK; - } - - if (fileio_open(&file, args[0], FILEIO_READ, FILEIO_BINARY) != ERROR_OK) - { - command_print(cmd_ctx, "file open error: %s", file.error_str); - return ERROR_OK; - } - - if (file.size % 4) - { - command_print(cmd_ctx, "size isn't a multiple of 4, no valid trace data"); - return ERROR_OK; - } - - if (etm_ctx->trace_depth > 0) - { - free(etm_ctx->trace_data); - } - - fileio_read_u32(&file, &etm_ctx->capture_status); - fileio_read_u32(&file, &etm_ctx->portmode); - fileio_read_u32(&file, &etm_ctx->tracemode); - fileio_read_u32(&file, &etm_ctx->trace_depth); - - etm_ctx->trace_data = malloc(sizeof(etmv1_trace_data_t) * etm_ctx->trace_depth); - - for (i = 0; i < etm_ctx->trace_depth; i++) - { - u32 pipestat, packet, flags; - fileio_read_u32(&file, &pipestat); - fileio_read_u32(&file, &packet); - fileio_read_u32(&file, &flags); - etm_ctx->trace_data[i].pipestat = pipestat & 0xff; - etm_ctx->trace_data[i].packet = packet & 0xffff; - etm_ctx->trace_data[i].flags = flags; - } - - fileio_close(&file); - - return ERROR_OK; -} - -int handle_etm_trigger_percent_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc) -{ - target_t *target; - armv4_5_common_t *armv4_5; - arm7_9_common_t *arm7_9; - etm_context_t *etm_ctx; - - target = get_current_target(cmd_ctx); - - if (arm7_9_get_arch_pointers(target, &armv4_5, &arm7_9) != ERROR_OK) - { - command_print(cmd_ctx, "current target isn't an ARM7/ARM9 target"); - return ERROR_OK; - } - - if (!(etm_ctx = arm7_9->etm_ctx)) - { - command_print(cmd_ctx, "current target doesn't have an ETM configured"); - return ERROR_OK; - } - - if (argc > 0) - { - u32 new_value = strtoul(args[0], NULL, 0); - - if ((new_value < 2) || (new_value > 100)) - { - command_print(cmd_ctx, "valid settings are 2% to 100%"); - } - else - { - etm_ctx->trigger_percent = new_value; - } - } - - command_print(cmd_ctx, "%i percent of the tracebuffer reserved for after the trigger", etm_ctx->trigger_percent); - - return ERROR_OK; -} - -int handle_etm_start_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc) -{ - target_t *target; - armv4_5_common_t *armv4_5; - arm7_9_common_t *arm7_9; - etm_context_t *etm_ctx; - reg_t *etm_ctrl_reg; - - target = get_current_target(cmd_ctx); - - if (arm7_9_get_arch_pointers(target, &armv4_5, &arm7_9) != ERROR_OK) - { - command_print(cmd_ctx, "current target isn't an ARM7/ARM9 target"); - return ERROR_OK; - } - - if (!(etm_ctx = arm7_9->etm_ctx)) - { - command_print(cmd_ctx, "current target doesn't have an ETM configured"); - return ERROR_OK; - } - - /* invalidate old tracing data */ - arm7_9->etm_ctx->capture_status = TRACE_IDLE; - if (arm7_9->etm_ctx->trace_depth > 0) - { - free(arm7_9->etm_ctx->trace_data); - arm7_9->etm_ctx->trace_data = NULL; - } - arm7_9->etm_ctx->trace_depth = 0; - - etm_ctrl_reg = &arm7_9->etm_ctx->reg_cache->reg_list[ETM_CTRL]; - etm_get_reg(etm_ctrl_reg); - - /* Clear programming bit (10), set port selection bit (11) */ - buf_set_u32(etm_ctrl_reg->value, 10, 2, 0x2); - - etm_store_reg(etm_ctrl_reg); - jtag_execute_queue(); - - etm_ctx->capture_driver->start_capture(etm_ctx); - - return ERROR_OK; -} - -int handle_etm_stop_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc) -{ - target_t *target; - armv4_5_common_t *armv4_5; - arm7_9_common_t *arm7_9; - etm_context_t *etm_ctx; - reg_t *etm_ctrl_reg; - - target = get_current_target(cmd_ctx); - - if (arm7_9_get_arch_pointers(target, &armv4_5, &arm7_9) != ERROR_OK) - { - command_print(cmd_ctx, "current target isn't an ARM7/ARM9 target"); - return ERROR_OK; - } - - if (!(etm_ctx = arm7_9->etm_ctx)) - { - command_print(cmd_ctx, "current target doesn't have an ETM configured"); - return ERROR_OK; - } - - etm_ctrl_reg = &arm7_9->etm_ctx->reg_cache->reg_list[ETM_CTRL]; - etm_get_reg(etm_ctrl_reg); - - /* Set programming bit (10), clear port selection bit (11) */ - buf_set_u32(etm_ctrl_reg->value, 10, 2, 0x1); - - etm_store_reg(etm_ctrl_reg); - jtag_execute_queue(); - - etm_ctx->capture_driver->stop_capture(etm_ctx); - - return ERROR_OK; -} - -int handle_etm_analyze_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc) -{ - target_t *target; - armv4_5_common_t *armv4_5; - arm7_9_common_t *arm7_9; - etm_context_t *etm_ctx; - int retval; - - target = get_current_target(cmd_ctx); - - if (arm7_9_get_arch_pointers(target, &armv4_5, &arm7_9) != ERROR_OK) - { - command_print(cmd_ctx, "current target isn't an ARM7/ARM9 target"); - return ERROR_OK; - } - - if (!(etm_ctx = arm7_9->etm_ctx)) - { - command_print(cmd_ctx, "current target doesn't have an ETM configured"); - return ERROR_OK; - } - - if ((retval = etmv1_analyze_trace(etm_ctx, cmd_ctx)) != ERROR_OK) - { - switch(retval) - { - case ERROR_ETM_ANALYSIS_FAILED: - command_print(cmd_ctx, "further analysis failed (corrupted trace data or just end of data"); - break; - case ERROR_TRACE_INSTRUCTION_UNAVAILABLE: - command_print(cmd_ctx, "no instruction for current address available, analysis aborted"); - break; - case ERROR_TRACE_IMAGE_UNAVAILABLE: - command_print(cmd_ctx, "no image available for trace analysis"); - break; - default: - command_print(cmd_ctx, "unknown error: %i", retval); - } - } - - return ERROR_OK; -} - -int etm_register_commands(struct command_context_s *cmd_ctx) -{ - etm_cmd = register_command(cmd_ctx, NULL, "etm", NULL, COMMAND_ANY, "Embedded Trace Macrocell"); - - register_command(cmd_ctx, etm_cmd, "config", handle_etm_config_command, COMMAND_CONFIG, NULL); - - return ERROR_OK; -} - -int etm_register_user_commands(struct command_context_s *cmd_ctx) -{ - register_command(cmd_ctx, etm_cmd, "tracemode", handle_etm_tracemode_command, - COMMAND_EXEC, "configure trace mode ", handle_etm_trigger_percent_command, - COMMAND_EXEC, "amount () of trace buffer to be filled after the trigger occured"); - register_command(cmd_ctx, etm_cmd, "status", handle_etm_status_command, - COMMAND_EXEC, "display current target's ETM status"); - register_command(cmd_ctx, etm_cmd, "start", handle_etm_start_command, - COMMAND_EXEC, "start ETM trace collection"); - register_command(cmd_ctx, etm_cmd, "stop", handle_etm_stop_command, - COMMAND_EXEC, "stop ETM trace collection"); - - register_command(cmd_ctx, etm_cmd, "analyze", handle_etm_analyze_command, - COMMAND_EXEC, "anaylze collected ETM trace"); - - register_command(cmd_ctx, etm_cmd, "image", handle_etm_image_command, - COMMAND_EXEC, "load image from [base address]"); - - register_command(cmd_ctx, etm_cmd, "dump", handle_etm_dump_command, - COMMAND_EXEC, "dump captured trace data "); - register_command(cmd_ctx, etm_cmd, "load", handle_etm_load_command, - COMMAND_EXEC, "load trace data for analysis "); - - return ERROR_OK; -} +/*************************************************************************** + * Copyright (C) 2005 by Dominic Rath * + * Dominic.Rath@gmx.de * + * * + * 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 "etm.h" +#include "etb.h" +#include "image.h" +#include "arm7_9_common.h" +#include "arm_disassembler.h" + + +/* + * ARM "Embedded Trace Macrocell" (ETM) support -- direct JTAG access. + * + * ETM modules collect instruction and/or data trace information, compress + * it, and transfer it to a debugging host through either a (buffered) trace + * port (often a 38-pin Mictor connector) or an Embedded Trace Buffer (ETB). + * + * There are several generations of these modules. Original versions have + * JTAG access through a dedicated scan chain. Recent versions have added + * access via coprocessor instructions, memory addressing, and the ARM Debug + * Interface v5 (ADIv5); and phased out direct JTAG access. + * + * This code supports up to the ETMv1.3 architecture, as seen in ETM9 and + * most common ARM9 systems. Note: "CoreSight ETM9" implements ETMv3.2, + * implying non-JTAG connectivity options. + * + * Relevant documentation includes: + * ARM DDI 0157G ... ETM9 (r2p2) Technical Reference Manual + * ARM DDI 0315B ... CoreSight ETM9 (r0p1) Technical Reference Manual + * ARM IHI 0014O ... Embedded Trace Macrocell, Architecture Specification + */ + +#define ARRAY_SIZE(x) ((int)(sizeof(x)/sizeof((x)[0]))) + +enum { + RO, /* read/only */ + WO, /* write/only */ + RW, /* read/write */ +}; + +struct etm_reg_info { + uint8_t addr; + uint8_t size; /* low-N of 32 bits */ + uint8_t mode; /* RO, WO, RW */ + uint8_t bcd_vers; /* 1.0, 2.0, etc */ + char *name; +}; + +/* + * Registers 0..0x7f are JTAG-addressable using scanchain 6. + * (Or on some processors, through coprocessor operations.) + * Newer versions of ETM make some W/O registers R/W, and + * provide definitions for some previously-unused bits. + */ + +/* basic registers that are always there given the right ETM version */ +static const struct etm_reg_info etm_core[] = { + /* NOTE: we "know" ETM_CONFIG is listed first */ + { ETM_CONFIG, 32, RO, 0x10, "ETM_config", }, + + /* ETM Trace Registers */ + { ETM_CTRL, 32, RW, 0x10, "ETM_ctrl", }, + { ETM_TRIG_EVENT, 17, WO, 0x10, "ETM_trig_event", }, + { ETM_ASIC_CTRL, 8, WO, 0x10, "ETM_asic_ctrl", }, + { ETM_STATUS, 3, RO, 0x11, "ETM_status", }, + { ETM_SYS_CONFIG, 9, RO, 0x12, "ETM_sys_config", }, + + /* TraceEnable configuration */ + { ETM_TRACE_RESOURCE_CTRL, 32, WO, 0x12, "ETM_trace_resource_ctrl", }, + { ETM_TRACE_EN_CTRL2, 16, WO, 0x12, "ETM_trace_en_ctrl2", }, + { ETM_TRACE_EN_EVENT, 17, WO, 0x10, "ETM_trace_en_event", }, + { ETM_TRACE_EN_CTRL1, 26, WO, 0x10, "ETM_trace_en_ctrl1", }, + + /* ViewData configuration (data trace) */ + { ETM_VIEWDATA_EVENT, 17, WO, 0x10, "ETM_viewdata_event", }, + { ETM_VIEWDATA_CTRL1, 32, WO, 0x10, "ETM_viewdata_ctrl1", }, + { ETM_VIEWDATA_CTRL2, 32, WO, 0x10, "ETM_viewdata_ctrl2", }, + { ETM_VIEWDATA_CTRL3, 17, WO, 0x10, "ETM_viewdata_ctrl3", }, + + /* REVISIT exclude VIEWDATA_CTRL2 when it's not there */ + + { 0x78, 12, WO, 0x20, "ETM_sync_freq", }, + { 0x79, 32, RO, 0x20, "ETM_id", }, +}; + +static const struct etm_reg_info etm_fifofull[] = { + /* FIFOFULL configuration */ + { ETM_FIFOFULL_REGION, 25, WO, 0x10, "ETM_fifofull_region", }, + { ETM_FIFOFULL_LEVEL, 8, WO, 0x10, "ETM_fifofull_level", }, +}; + +static const struct etm_reg_info etm_addr_comp[] = { + /* Address comparator register pairs */ +#define ADDR_COMPARATOR(i) \ + { ETM_ADDR_COMPARATOR_VALUE + (i) - 1, 32, WO, 0x10, \ + "ETM_addr_" #i "_comparator_value", }, \ + { ETM_ADDR_ACCESS_TYPE + (i) - 1, 7, WO, 0x10, \ + "ETM_addr_" #i "_access_type", } + ADDR_COMPARATOR(1), + ADDR_COMPARATOR(2), + ADDR_COMPARATOR(3), + ADDR_COMPARATOR(4), + ADDR_COMPARATOR(5), + ADDR_COMPARATOR(6), + ADDR_COMPARATOR(7), + ADDR_COMPARATOR(8), + + ADDR_COMPARATOR(9), + ADDR_COMPARATOR(10), + ADDR_COMPARATOR(11), + ADDR_COMPARATOR(12), + ADDR_COMPARATOR(13), + ADDR_COMPARATOR(14), + ADDR_COMPARATOR(15), + ADDR_COMPARATOR(16), +#undef ADDR_COMPARATOR +}; + +static const struct etm_reg_info etm_data_comp[] = { + /* Data Value Comparators (NOTE: odd addresses are reserved) */ +#define DATA_COMPARATOR(i) \ + { ETM_DATA_COMPARATOR_VALUE + 2*(i) - 1, 32, WO, 0x10, \ + "ETM_data_" #i "_comparator_value", }, \ + { ETM_DATA_COMPARATOR_MASK + 2*(i) - 1, 32, WO, 0x10, \ + "ETM_data_" #i "_comparator_mask", } + DATA_COMPARATOR(1), + DATA_COMPARATOR(2), + DATA_COMPARATOR(3), + DATA_COMPARATOR(4), + DATA_COMPARATOR(5), + DATA_COMPARATOR(6), + DATA_COMPARATOR(7), + DATA_COMPARATOR(8), +#undef DATA_COMPARATOR +}; + +static const struct etm_reg_info etm_counters[] = { +#define ETM_COUNTER(i) \ + { ETM_COUNTER_RELOAD_VALUE + (i) - 1, 16, WO, 0x10, \ + "ETM_counter_" #i "_reload_value", }, \ + { ETM_COUNTER_ENABLE + (i) - 1, 18, WO, 0x10, \ + "ETM_counter_" #i "_enable", }, \ + { ETM_COUNTER_RELOAD_EVENT + (i) - 1, 17, WO, 0x10, \ + "ETM_counter_" #i "_reload_event", }, \ + { ETM_COUNTER_VALUE + (i) - 1, 16, RO, 0x10, \ + "ETM_counter_" #i "_value", } + ETM_COUNTER(1), + ETM_COUNTER(2), + ETM_COUNTER(3), + ETM_COUNTER(4), +#undef ETM_COUNTER +}; + +static const struct etm_reg_info etm_sequencer[] = { +#define ETM_SEQ(i) \ + { ETM_SEQUENCER_EVENT + (i), 17, WO, 0x10, \ + "ETM_sequencer_event" #i, } + ETM_SEQ(0), /* 1->2 */ + ETM_SEQ(1), /* 2->1 */ + ETM_SEQ(2), /* 2->3 */ + ETM_SEQ(3), /* 3->1 */ + ETM_SEQ(4), /* 3->2 */ + ETM_SEQ(5), /* 1->3 */ +#undef ETM_SEQ + /* 0x66 reserved */ + { ETM_SEQUENCER_STATE, 2, RO, 0x10, "ETM_sequencer_state", }, +}; + +static const struct etm_reg_info etm_outputs[] = { +#define ETM_OUTPUT(i) \ + { ETM_EXTERNAL_OUTPUT + (i) - 1, 17, WO, 0x10, \ + "ETM_external_output" #i, } + + ETM_OUTPUT(1), + ETM_OUTPUT(2), + ETM_OUTPUT(3), + ETM_OUTPUT(4), +#undef ETM_OUTPUT +}; + +#if 0 + /* registers from 0x6c..0x7f were added after ETMv1.3 */ + + /* Context ID Comparators */ + { 0x6c, 32, RO, 0x20, "ETM_contextid_comparator_value1", } + { 0x6d, 32, RO, 0x20, "ETM_contextid_comparator_value2", } + { 0x6e, 32, RO, 0x20, "ETM_contextid_comparator_value3", } + { 0x6f, 32, RO, 0x20, "ETM_contextid_comparator_mask", } +#endif + +static int etm_reg_arch_type = -1; + +static int etm_get_reg(reg_t *reg); +static int etm_read_reg_w_check(reg_t *reg, + uint8_t* check_value, uint8_t* check_mask); +static int etm_register_user_commands(struct command_context_s *cmd_ctx); +static int etm_set_reg_w_exec(reg_t *reg, uint8_t *buf); +static int etm_write_reg(reg_t *reg, uint32_t value); + +static command_t *etm_cmd; + + +/* Look up register by ID ... most ETM instances only + * support a subset of the possible registers. + */ +static reg_t *etm_reg_lookup(etm_context_t *etm_ctx, unsigned id) +{ + reg_cache_t *cache = etm_ctx->reg_cache; + int i; + + for (i = 0; i < cache->num_regs; i++) { + struct etm_reg_s *reg = cache->reg_list[i].arch_info; + + if (reg->reg_info->addr == id) + return &cache->reg_list[i]; + } + + /* caller asking for nonexistent register is a bug! */ + /* REVISIT say which of the N targets was involved */ + LOG_ERROR("ETM: register 0x%02x not available", id); + return NULL; +} + +static void etm_reg_add(unsigned bcd_vers, arm_jtag_t *jtag_info, + reg_cache_t *cache, etm_reg_t *ereg, + const struct etm_reg_info *r, unsigned nreg) +{ + reg_t *reg = cache->reg_list; + + reg += cache->num_regs; + ereg += cache->num_regs; + + /* add up to "nreg" registers from "r", if supported by this + * version of the ETM, to the specified cache. + */ + for (; nreg--; r++) { + + /* this ETM may be too old to have some registers */ + if (r->bcd_vers > bcd_vers) + continue; + + reg->name = r->name; + reg->size = r->size; + reg->value = &ereg->value; + reg->arch_info = ereg; + reg->arch_type = etm_reg_arch_type; + reg++; + cache->num_regs++; + + ereg->reg_info = r; + ereg->jtag_info = jtag_info; + ereg++; + } +} + +reg_cache_t *etm_build_reg_cache(target_t *target, + arm_jtag_t *jtag_info, etm_context_t *etm_ctx) +{ + reg_cache_t *reg_cache = malloc(sizeof(reg_cache_t)); + reg_t *reg_list = NULL; + etm_reg_t *arch_info = NULL; + unsigned bcd_vers, config; + + /* register a register arch-type for etm registers only once */ + if (etm_reg_arch_type == -1) + etm_reg_arch_type = register_reg_arch_type(etm_get_reg, + etm_set_reg_w_exec); + + /* the actual registers are kept in two arrays */ + reg_list = calloc(128, sizeof(reg_t)); + arch_info = calloc(128, sizeof(etm_reg_t)); + + /* fill in values for the reg cache */ + reg_cache->name = "etm registers"; + reg_cache->next = NULL; + reg_cache->reg_list = reg_list; + reg_cache->num_regs = 0; + + /* add ETM_CONFIG, then parse its values to see + * which other registers exist in this ETM + */ + etm_reg_add(0x10, jtag_info, reg_cache, arch_info, + etm_core, 1); + + etm_get_reg(reg_list); + etm_ctx->config = buf_get_u32((void *)&arch_info->value, 0, 32); + config = etm_ctx->config; + + /* figure ETM version then add base registers */ + if (config & (1 << 31)) { + bcd_vers = 0x20; + LOG_WARNING("ETMv2+ support is incomplete"); + + /* REVISIT read ID register, distinguish ETMv3.3 etc; + * don't presume trace start/stop support is present; + * and include any context ID comparator registers. + */ + } else { + switch (config >> 28) { + case 7: + case 5: + case 3: + bcd_vers = 0x13; + break; + case 4: + case 2: + bcd_vers = 0x12; + break; + case 1: + bcd_vers = 0x11; + break; + case 0: + bcd_vers = 0x10; + break; + default: + LOG_WARNING("Bad ETMv1 protocol %d", config >> 28); + free(reg_cache); + free(reg_list); + free(arch_info); + return ERROR_OK; + } + } + etm_ctx->bcd_vers = bcd_vers; + LOG_INFO("ETM v%d.%d", bcd_vers >> 4, bcd_vers & 0xf); + + etm_reg_add(bcd_vers, jtag_info, reg_cache, arch_info, + etm_core + 1, ARRAY_SIZE(etm_core) - 1); + + /* address and data comparators; counters; outputs */ + etm_reg_add(bcd_vers, jtag_info, reg_cache, arch_info, + etm_addr_comp, 4 * (0x0f & (config >> 0))); + etm_reg_add(bcd_vers, jtag_info, reg_cache, arch_info, + etm_data_comp, 2 * (0x0f & (config >> 4))); + etm_reg_add(bcd_vers, jtag_info, reg_cache, arch_info, + etm_counters, 4 * (0x07 & (config >> 13))); + etm_reg_add(bcd_vers, jtag_info, reg_cache, arch_info, + etm_outputs, (0x07 & (config >> 20))); + + /* FIFOFULL presence is optional + * REVISIT for ETMv1.2 and later, don't bother adding this + * unless ETM_SYS_CONFIG says it's also *supported* ... + */ + if (config & (1 << 23)) + etm_reg_add(bcd_vers, jtag_info, reg_cache, arch_info, + etm_fifofull, ARRAY_SIZE(etm_fifofull)); + + /* sequencer is optional (for state-dependant triggering) */ + if (config & (1 << 16)) + etm_reg_add(bcd_vers, jtag_info, reg_cache, arch_info, + etm_sequencer, ARRAY_SIZE(etm_sequencer)); + + /* REVISIT could realloc and likely save half the memory + * in the two chunks we allocated... + */ + + /* the ETM might have an ETB connected */ + if (strcmp(etm_ctx->capture_driver->name, "etb") == 0) + { + etb_t *etb = etm_ctx->capture_driver_priv; + + if (!etb) + { + LOG_ERROR("etb selected as etm capture driver, but no ETB configured"); + free(reg_cache); + free(reg_list); + free(arch_info); + return ERROR_OK; + } + + reg_cache->next = etb_build_reg_cache(etb); + + etb->reg_cache = reg_cache->next; + } + + + return reg_cache; +} + +static int etm_read_reg(reg_t *reg) +{ + return etm_read_reg_w_check(reg, NULL, NULL); +} + +static int etm_store_reg(reg_t *reg) +{ + return etm_write_reg(reg, buf_get_u32(reg->value, 0, reg->size)); +} + +int etm_setup(target_t *target) +{ + int retval; + uint32_t etm_ctrl_value; + struct arm *arm = target_to_arm(target); + etm_context_t *etm_ctx = arm->etm; + reg_t *etm_ctrl_reg; + + etm_ctrl_reg = etm_reg_lookup(etm_ctx, ETM_CTRL); + if (!etm_ctrl_reg) + return ERROR_OK; + + /* initialize some ETM control register settings */ + etm_get_reg(etm_ctrl_reg); + etm_ctrl_value = buf_get_u32(etm_ctrl_reg->value, 0, etm_ctrl_reg->size); + + /* clear the ETM powerdown bit (0) */ + etm_ctrl_value &= ~0x1; + + /* configure port width (6:4), mode (17:16) and clocking (13) */ + etm_ctrl_value = (etm_ctrl_value & + ~ETM_PORT_WIDTH_MASK & ~ETM_PORT_MODE_MASK & ~ETM_PORT_CLOCK_MASK) + | etm_ctx->portmode; + + buf_set_u32(etm_ctrl_reg->value, 0, etm_ctrl_reg->size, etm_ctrl_value); + etm_store_reg(etm_ctrl_reg); + + if ((retval = jtag_execute_queue()) != ERROR_OK) + return retval; + + if ((retval = etm_ctx->capture_driver->init(etm_ctx)) != ERROR_OK) + { + LOG_ERROR("ETM capture driver initialization failed"); + return retval; + } + return ERROR_OK; +} + +static int etm_get_reg(reg_t *reg) +{ + int retval; + + if ((retval = etm_read_reg(reg)) != ERROR_OK) + { + LOG_ERROR("BUG: error scheduling etm register read"); + return retval; + } + + if ((retval = jtag_execute_queue()) != ERROR_OK) + { + LOG_ERROR("register read failed"); + return retval; + } + + return ERROR_OK; +} + +static int etm_read_reg_w_check(reg_t *reg, + uint8_t* check_value, uint8_t* check_mask) +{ + etm_reg_t *etm_reg = reg->arch_info; + const struct etm_reg_info *r = etm_reg->reg_info; + uint8_t reg_addr = r->addr & 0x7f; + scan_field_t fields[3]; + + if (etm_reg->reg_info->mode == WO) { + LOG_ERROR("BUG: can't read write-only register %s", r->name); + return ERROR_INVALID_ARGUMENTS; + } + + LOG_DEBUG("%s (%u)", r->name, reg_addr); + + jtag_set_end_state(TAP_IDLE); + arm_jtag_scann(etm_reg->jtag_info, 0x6); + arm_jtag_set_instr(etm_reg->jtag_info, etm_reg->jtag_info->intest_instr, NULL); + + fields[0].tap = etm_reg->jtag_info->tap; + fields[0].num_bits = 32; + fields[0].out_value = reg->value; + fields[0].in_value = NULL; + fields[0].check_value = NULL; + fields[0].check_mask = NULL; + + fields[1].tap = etm_reg->jtag_info->tap; + fields[1].num_bits = 7; + fields[1].out_value = malloc(1); + buf_set_u32(fields[1].out_value, 0, 7, reg_addr); + fields[1].in_value = NULL; + fields[1].check_value = NULL; + fields[1].check_mask = NULL; + + fields[2].tap = etm_reg->jtag_info->tap; + fields[2].num_bits = 1; + fields[2].out_value = malloc(1); + buf_set_u32(fields[2].out_value, 0, 1, 0); + fields[2].in_value = NULL; + fields[2].check_value = NULL; + fields[2].check_mask = NULL; + + jtag_add_dr_scan(3, fields, jtag_get_end_state()); + + fields[0].in_value = reg->value; + fields[0].check_value = check_value; + fields[0].check_mask = check_mask; + + jtag_add_dr_scan_check(3, fields, jtag_get_end_state()); + + free(fields[1].out_value); + free(fields[2].out_value); + + return ERROR_OK; +} + +static int etm_set_reg(reg_t *reg, uint32_t value) +{ + int retval; + + if ((retval = etm_write_reg(reg, value)) != ERROR_OK) + { + LOG_ERROR("BUG: error scheduling etm register write"); + return retval; + } + + buf_set_u32(reg->value, 0, reg->size, value); + reg->valid = 1; + reg->dirty = 0; + + return ERROR_OK; +} + +static int etm_set_reg_w_exec(reg_t *reg, uint8_t *buf) +{ + int retval; + + etm_set_reg(reg, buf_get_u32(buf, 0, reg->size)); + + if ((retval = jtag_execute_queue()) != ERROR_OK) + { + LOG_ERROR("register write failed"); + return retval; + } + return ERROR_OK; +} + +static int etm_write_reg(reg_t *reg, uint32_t value) +{ + etm_reg_t *etm_reg = reg->arch_info; + const struct etm_reg_info *r = etm_reg->reg_info; + uint8_t reg_addr = r->addr & 0x7f; + scan_field_t fields[3]; + + if (etm_reg->reg_info->mode == RO) { + LOG_ERROR("BUG: can't write read--only register %s", r->name); + return ERROR_INVALID_ARGUMENTS; + } + + LOG_DEBUG("%s (%u): 0x%8.8" PRIx32 "", r->name, reg_addr, value); + + jtag_set_end_state(TAP_IDLE); + arm_jtag_scann(etm_reg->jtag_info, 0x6); + arm_jtag_set_instr(etm_reg->jtag_info, etm_reg->jtag_info->intest_instr, NULL); + + fields[0].tap = etm_reg->jtag_info->tap; + fields[0].num_bits = 32; + uint8_t tmp1[4]; + fields[0].out_value = tmp1; + buf_set_u32(fields[0].out_value, 0, 32, value); + fields[0].in_value = NULL; + + fields[1].tap = etm_reg->jtag_info->tap; + fields[1].num_bits = 7; + uint8_t tmp2; + fields[1].out_value = &tmp2; + buf_set_u32(fields[1].out_value, 0, 7, reg_addr); + fields[1].in_value = NULL; + + fields[2].tap = etm_reg->jtag_info->tap; + fields[2].num_bits = 1; + uint8_t tmp3; + fields[2].out_value = &tmp3; + buf_set_u32(fields[2].out_value, 0, 1, 1); + fields[2].in_value = NULL; + + jtag_add_dr_scan(3, fields, jtag_get_end_state()); + + return ERROR_OK; +} + + +/* ETM trace analysis functionality + * + */ +extern etm_capture_driver_t etm_dummy_capture_driver; +#if BUILD_OOCD_TRACE == 1 +extern etm_capture_driver_t oocd_trace_capture_driver; +#endif + +static etm_capture_driver_t *etm_capture_drivers[] = +{ + &etb_capture_driver, + &etm_dummy_capture_driver, +#if BUILD_OOCD_TRACE == 1 + &oocd_trace_capture_driver, +#endif + NULL +}; + +static int etm_read_instruction(etm_context_t *ctx, arm_instruction_t *instruction) +{ + int i; + int section = -1; + uint32_t size_read; + uint32_t opcode; + int retval; + + if (!ctx->image) + return ERROR_TRACE_IMAGE_UNAVAILABLE; + + /* search for the section the current instruction belongs to */ + for (i = 0; i < ctx->image->num_sections; i++) + { + if ((ctx->image->sections[i].base_address <= ctx->current_pc) && + (ctx->image->sections[i].base_address + ctx->image->sections[i].size > ctx->current_pc)) + { + section = i; + break; + } + } + + if (section == -1) + { + /* current instruction couldn't be found in the image */ + return ERROR_TRACE_INSTRUCTION_UNAVAILABLE; + } + + if (ctx->core_state == ARMV4_5_STATE_ARM) + { + uint8_t buf[4]; + if ((retval = image_read_section(ctx->image, section, + ctx->current_pc - ctx->image->sections[section].base_address, + 4, buf, &size_read)) != ERROR_OK) + { + LOG_ERROR("error while reading instruction: %i", retval); + return ERROR_TRACE_INSTRUCTION_UNAVAILABLE; + } + opcode = target_buffer_get_u32(ctx->target, buf); + arm_evaluate_opcode(opcode, ctx->current_pc, instruction); + } + else if (ctx->core_state == ARMV4_5_STATE_THUMB) + { + uint8_t buf[2]; + if ((retval = image_read_section(ctx->image, section, + ctx->current_pc - ctx->image->sections[section].base_address, + 2, buf, &size_read)) != ERROR_OK) + { + LOG_ERROR("error while reading instruction: %i", retval); + return ERROR_TRACE_INSTRUCTION_UNAVAILABLE; + } + opcode = target_buffer_get_u16(ctx->target, buf); + thumb_evaluate_opcode(opcode, ctx->current_pc, instruction); + } + else if (ctx->core_state == ARMV4_5_STATE_JAZELLE) + { + LOG_ERROR("BUG: tracing of jazelle code not supported"); + return ERROR_FAIL; + } + else + { + LOG_ERROR("BUG: unknown core state encountered"); + return ERROR_FAIL; + } + + return ERROR_OK; +} + +static int etmv1_next_packet(etm_context_t *ctx, uint8_t *packet, int apo) +{ + while (ctx->data_index < ctx->trace_depth) + { + /* if the caller specified an address packet offset, skip until the + * we reach the n-th cycle marked with tracesync */ + if (apo > 0) + { + if (ctx->trace_data[ctx->data_index].flags & ETMV1_TRACESYNC_CYCLE) + apo--; + + if (apo > 0) + { + ctx->data_index++; + ctx->data_half = 0; + } + continue; + } + + /* no tracedata output during a TD cycle + * or in a trigger cycle */ + if ((ctx->trace_data[ctx->data_index].pipestat == STAT_TD) + || (ctx->trace_data[ctx->data_index].flags & ETMV1_TRIGGER_CYCLE)) + { + ctx->data_index++; + ctx->data_half = 0; + continue; + } + + if ((ctx->portmode & ETM_PORT_WIDTH_MASK) == ETM_PORT_16BIT) + { + if (ctx->data_half == 0) + { + *packet = ctx->trace_data[ctx->data_index].packet & 0xff; + ctx->data_half = 1; + } + else + { + *packet = (ctx->trace_data[ctx->data_index].packet & 0xff00) >> 8; + ctx->data_half = 0; + ctx->data_index++; + } + } + else if ((ctx->portmode & ETM_PORT_WIDTH_MASK) == ETM_PORT_8BIT) + { + *packet = ctx->trace_data[ctx->data_index].packet & 0xff; + ctx->data_index++; + } + else + { + /* on a 4-bit port, a packet will be output during two consecutive cycles */ + if (ctx->data_index > (ctx->trace_depth - 2)) + return -1; + + *packet = ctx->trace_data[ctx->data_index].packet & 0xf; + *packet |= (ctx->trace_data[ctx->data_index + 1].packet & 0xf) << 4; + ctx->data_index += 2; + } + + return 0; + } + + return -1; +} + +static int etmv1_branch_address(etm_context_t *ctx) +{ + int retval; + uint8_t packet; + int shift = 0; + int apo; + uint32_t i; + + /* quit analysis if less than two cycles are left in the trace + * because we can't extract the APO */ + if (ctx->data_index > (ctx->trace_depth - 2)) + return -1; + + /* a BE could be output during an APO cycle, skip the current + * and continue with the new one */ + if (ctx->trace_data[ctx->pipe_index + 1].pipestat & 0x4) + return 1; + if (ctx->trace_data[ctx->pipe_index + 2].pipestat & 0x4) + return 2; + + /* address packet offset encoded in the next two cycles' pipestat bits */ + apo = ctx->trace_data[ctx->pipe_index + 1].pipestat & 0x3; + apo |= (ctx->trace_data[ctx->pipe_index + 2].pipestat & 0x3) << 2; + + /* count number of tracesync cycles between current pipe_index and data_index + * i.e. the number of tracesyncs that data_index already passed by + * to subtract them from the APO */ + for (i = ctx->pipe_index; i < ctx->data_index; i++) + { + if (ctx->trace_data[ctx->pipe_index + 1].pipestat & ETMV1_TRACESYNC_CYCLE) + apo--; + } + + /* extract up to four 7-bit packets */ + do { + if ((retval = etmv1_next_packet(ctx, &packet, (shift == 0) ? apo + 1 : 0)) != 0) + return -1; + ctx->last_branch &= ~(0x7f << shift); + ctx->last_branch |= (packet & 0x7f) << shift; + shift += 7; + } while ((packet & 0x80) && (shift < 28)); + + /* one last packet holding 4 bits of the address, plus the branch reason code */ + if ((shift == 28) && (packet & 0x80)) + { + if ((retval = etmv1_next_packet(ctx, &packet, 0)) != 0) + return -1; + ctx->last_branch &= 0x0fffffff; + ctx->last_branch |= (packet & 0x0f) << 28; + ctx->last_branch_reason = (packet & 0x70) >> 4; + shift += 4; + } + else + { + ctx->last_branch_reason = 0; + } + + if (shift == 32) + { + ctx->pc_ok = 1; + } + + /* if a full address was output, we might have branched into Jazelle state */ + if ((shift == 32) && (packet & 0x80)) + { + ctx->core_state = ARMV4_5_STATE_JAZELLE; + } + else + { + /* if we didn't branch into Jazelle state, the current processor state is + * encoded in bit 0 of the branch target address */ + if (ctx->last_branch & 0x1) + { + ctx->core_state = ARMV4_5_STATE_THUMB; + ctx->last_branch &= ~0x1; + } + else + { + ctx->core_state = ARMV4_5_STATE_ARM; + ctx->last_branch &= ~0x3; + } + } + + return 0; +} + +static int etmv1_data(etm_context_t *ctx, int size, uint32_t *data) +{ + int j; + uint8_t buf[4]; + int retval; + + for (j = 0; j < size; j++) + { + if ((retval = etmv1_next_packet(ctx, &buf[j], 0)) != 0) + return -1; + } + + if (size == 8) + { + LOG_ERROR("TODO: add support for 64-bit values"); + return -1; + } + else if (size == 4) + *data = target_buffer_get_u32(ctx->target, buf); + else if (size == 2) + *data = target_buffer_get_u16(ctx->target, buf); + else if (size == 1) + *data = buf[0]; + else + return -1; + + return 0; +} + +static int etmv1_analyze_trace(etm_context_t *ctx, struct command_context_s *cmd_ctx) +{ + int retval; + arm_instruction_t instruction; + + /* read the trace data if it wasn't read already */ + if (ctx->trace_depth == 0) + ctx->capture_driver->read_trace(ctx); + + /* start at the beginning of the captured trace */ + ctx->pipe_index = 0; + ctx->data_index = 0; + ctx->data_half = 0; + + /* neither the PC nor the data pointer are valid */ + ctx->pc_ok = 0; + ctx->ptr_ok = 0; + + while (ctx->pipe_index < ctx->trace_depth) + { + uint8_t pipestat = ctx->trace_data[ctx->pipe_index].pipestat; + uint32_t next_pc = ctx->current_pc; + uint32_t old_data_index = ctx->data_index; + uint32_t old_data_half = ctx->data_half; + uint32_t old_index = ctx->pipe_index; + uint32_t last_instruction = ctx->last_instruction; + uint32_t cycles = 0; + int current_pc_ok = ctx->pc_ok; + + if (ctx->trace_data[ctx->pipe_index].flags & ETMV1_TRIGGER_CYCLE) + { + command_print(cmd_ctx, "--- trigger ---"); + } + + /* instructions execute in IE/D or BE/D cycles */ + if ((pipestat == STAT_IE) || (pipestat == STAT_ID)) + ctx->last_instruction = ctx->pipe_index; + + /* if we don't have a valid pc skip until we reach an indirect branch */ + if ((!ctx->pc_ok) && (pipestat != STAT_BE)) + { + ctx->pipe_index++; + continue; + } + + /* any indirect branch could have interrupted instruction flow + * - the branch reason code could indicate a trace discontinuity + * - a branch to the exception vectors indicates an exception + */ + if ((pipestat == STAT_BE) || (pipestat == STAT_BD)) + { + /* backup current data index, to be able to consume the branch address + * before examining data address and values + */ + old_data_index = ctx->data_index; + old_data_half = ctx->data_half; + + ctx->last_instruction = ctx->pipe_index; + + if ((retval = etmv1_branch_address(ctx)) != 0) + { + /* negative return value from etmv1_branch_address means we ran out of packets, + * quit analysing the trace */ + if (retval < 0) + break; + + /* a positive return values means the current branch was abandoned, + * and a new branch was encountered in cycle ctx->pipe_index + retval; + */ + LOG_WARNING("abandoned branch encountered, correctnes of analysis uncertain"); + ctx->pipe_index += retval; + continue; + } + + /* skip over APO cycles */ + ctx->pipe_index += 2; + + switch (ctx->last_branch_reason) + { + case 0x0: /* normal PC change */ + next_pc = ctx->last_branch; + break; + case 0x1: /* tracing enabled */ + command_print(cmd_ctx, "--- tracing enabled at 0x%8.8" PRIx32 " ---", ctx->last_branch); + ctx->current_pc = ctx->last_branch; + ctx->pipe_index++; + continue; + break; + case 0x2: /* trace restarted after FIFO overflow */ + command_print(cmd_ctx, "--- trace restarted after FIFO overflow at 0x%8.8" PRIx32 " ---", ctx->last_branch); + ctx->current_pc = ctx->last_branch; + ctx->pipe_index++; + continue; + break; + case 0x3: /* exit from debug state */ + command_print(cmd_ctx, "--- exit from debug state at 0x%8.8" PRIx32 " ---", ctx->last_branch); + ctx->current_pc = ctx->last_branch; + ctx->pipe_index++; + continue; + break; + case 0x4: /* periodic synchronization point */ + next_pc = ctx->last_branch; + /* if we had no valid PC prior to this synchronization point, + * we have to move on with the next trace cycle + */ + if (!current_pc_ok) + { + command_print(cmd_ctx, "--- periodic synchronization point at 0x%8.8" PRIx32 " ---", next_pc); + ctx->current_pc = next_pc; + ctx->pipe_index++; + continue; + } + break; + default: /* reserved */ + LOG_ERROR("BUG: branch reason code 0x%" PRIx32 " is reserved", ctx->last_branch_reason); + return ERROR_FAIL; + } + + /* if we got here the branch was a normal PC change + * (or a periodic synchronization point, which means the same for that matter) + * if we didn't accquire a complete PC continue with the next cycle + */ + if (!ctx->pc_ok) + continue; + + /* indirect branch to the exception vector means an exception occured */ + if ((ctx->last_branch <= 0x20) + || ((ctx->last_branch >= 0xffff0000) && (ctx->last_branch <= 0xffff0020))) + { + if ((ctx->last_branch & 0xff) == 0x10) + { + command_print(cmd_ctx, "data abort"); + } + else + { + command_print(cmd_ctx, "exception vector 0x%2.2" PRIx32 "", ctx->last_branch); + ctx->current_pc = ctx->last_branch; + ctx->pipe_index++; + continue; + } + } + } + + /* an instruction was executed (or not, depending on the condition flags) + * retrieve it from the image for displaying */ + if (ctx->pc_ok && (pipestat != STAT_WT) && (pipestat != STAT_TD) && + !(((pipestat == STAT_BE) || (pipestat == STAT_BD)) && + ((ctx->last_branch_reason != 0x0) && (ctx->last_branch_reason != 0x4)))) + { + if ((retval = etm_read_instruction(ctx, &instruction)) != ERROR_OK) + { + /* can't continue tracing with no image available */ + if (retval == ERROR_TRACE_IMAGE_UNAVAILABLE) + { + return retval; + } + else if (retval == ERROR_TRACE_INSTRUCTION_UNAVAILABLE) + { + /* TODO: handle incomplete images + * for now we just quit the analsysis*/ + return retval; + } + } + + cycles = old_index - last_instruction; + } + + if ((pipestat == STAT_ID) || (pipestat == STAT_BD)) + { + uint32_t new_data_index = ctx->data_index; + uint32_t new_data_half = ctx->data_half; + + /* in case of a branch with data, the branch target address was consumed before + * we temporarily go back to the saved data index */ + if (pipestat == STAT_BD) + { + ctx->data_index = old_data_index; + ctx->data_half = old_data_half; + } + + if (ctx->tracemode & ETMV1_TRACE_ADDR) + { + uint8_t packet; + int shift = 0; + + do { + if ((retval = etmv1_next_packet(ctx, &packet, 0)) != 0) + return ERROR_ETM_ANALYSIS_FAILED; + ctx->last_ptr &= ~(0x7f << shift); + ctx->last_ptr |= (packet & 0x7f) << shift; + shift += 7; + } while ((packet & 0x80) && (shift < 32)); + + if (shift >= 32) + ctx->ptr_ok = 1; + + if (ctx->ptr_ok) + { + command_print(cmd_ctx, "address: 0x%8.8" PRIx32 "", ctx->last_ptr); + } + } + + if (ctx->tracemode & ETMV1_TRACE_DATA) + { + if ((instruction.type == ARM_LDM) || (instruction.type == ARM_STM)) + { + int i; + for (i = 0; i < 16; i++) + { + if (instruction.info.load_store_multiple.register_list & (1 << i)) + { + uint32_t data; + if (etmv1_data(ctx, 4, &data) != 0) + return ERROR_ETM_ANALYSIS_FAILED; + command_print(cmd_ctx, "data: 0x%8.8" PRIx32 "", data); + } + } + } + else if ((instruction.type >= ARM_LDR) && (instruction.type <= ARM_STRH)) + { + uint32_t data; + if (etmv1_data(ctx, arm_access_size(&instruction), &data) != 0) + return ERROR_ETM_ANALYSIS_FAILED; + command_print(cmd_ctx, "data: 0x%8.8" PRIx32 "", data); + } + } + + /* restore data index after consuming BD address and data */ + if (pipestat == STAT_BD) + { + ctx->data_index = new_data_index; + ctx->data_half = new_data_half; + } + } + + /* adjust PC */ + if ((pipestat == STAT_IE) || (pipestat == STAT_ID)) + { + if (((instruction.type == ARM_B) || + (instruction.type == ARM_BL) || + (instruction.type == ARM_BLX)) && + (instruction.info.b_bl_bx_blx.target_address != 0xffffffff)) + { + next_pc = instruction.info.b_bl_bx_blx.target_address; + } + else + { + next_pc += (ctx->core_state == ARMV4_5_STATE_ARM) ? 4 : 2; + } + } + else if (pipestat == STAT_IN) + { + next_pc += (ctx->core_state == ARMV4_5_STATE_ARM) ? 4 : 2; + } + + if ((pipestat != STAT_TD) && (pipestat != STAT_WT)) + { + char cycles_text[32] = ""; + + /* if the trace was captured with cycle accurate tracing enabled, + * output the number of cycles since the last executed instruction + */ + if (ctx->tracemode & ETMV1_CYCLE_ACCURATE) + { + snprintf(cycles_text, 32, " (%i %s)", + (int)cycles, + (cycles == 1) ? "cycle" : "cycles"); + } + + command_print(cmd_ctx, "%s%s%s", + instruction.text, + (pipestat == STAT_IN) ? " (not executed)" : "", + cycles_text); + + ctx->current_pc = next_pc; + + /* packets for an instruction don't start on or before the preceding + * functional pipestat (i.e. other than WT or TD) + */ + if (ctx->data_index <= ctx->pipe_index) + { + ctx->data_index = ctx->pipe_index + 1; + ctx->data_half = 0; + } + } + + ctx->pipe_index += 1; + } + + return ERROR_OK; +} + +static int handle_etm_tracemode_command_update( + struct command_context_s *cmd_ctx, + char **args, etmv1_tracemode_t *mode) +{ + etmv1_tracemode_t tracemode; + + /* what parts of data access are traced? */ + if (strcmp(args[0], "none") == 0) + tracemode = ETMV1_TRACE_NONE; + else if (strcmp(args[0], "data") == 0) + tracemode = ETMV1_TRACE_DATA; + else if (strcmp(args[0], "address") == 0) + tracemode = ETMV1_TRACE_ADDR; + else if (strcmp(args[0], "all") == 0) + tracemode = ETMV1_TRACE_DATA | ETMV1_TRACE_ADDR; + else + { + command_print(cmd_ctx, "invalid option '%s'", args[0]); + return ERROR_INVALID_ARGUMENTS; + } + + uint8_t context_id; + COMMAND_PARSE_NUMBER(u8, args[1], context_id); + switch (context_id) + { + case 0: + tracemode |= ETMV1_CONTEXTID_NONE; + break; + case 8: + tracemode |= ETMV1_CONTEXTID_8; + break; + case 16: + tracemode |= ETMV1_CONTEXTID_16; + break; + case 32: + tracemode |= ETMV1_CONTEXTID_32; + break; + default: + command_print(cmd_ctx, "invalid option '%s'", args[1]); + return ERROR_INVALID_ARGUMENTS; + } + + if (strcmp(args[2], "enable") == 0) + tracemode |= ETMV1_CYCLE_ACCURATE; + else if (strcmp(args[2], "disable") == 0) + tracemode |= 0; + else + { + command_print(cmd_ctx, "invalid option '%s'", args[2]); + return ERROR_INVALID_ARGUMENTS; + } + + if (strcmp(args[3], "enable") == 0) + tracemode |= ETMV1_BRANCH_OUTPUT; + else if (strcmp(args[3], "disable") == 0) + tracemode |= 0; + else + { + command_print(cmd_ctx, "invalid option '%s'", args[3]); + return ERROR_INVALID_ARGUMENTS; + } + + /* IGNORED: + * - CPRT tracing (coprocessor register transfers) + * - debug request (causes debug entry on trigger) + * - stall on FIFOFULL (preventing tracedata lossage) + */ + *mode = tracemode; + + return ERROR_OK; +} + +static int handle_etm_tracemode_command(struct command_context_s *cmd_ctx, + char *cmd, char **args, int argc) +{ + target_t *target = get_current_target(cmd_ctx); + struct arm *arm = target_to_arm(target); + struct etm *etm; + + if (!is_arm(arm)) { + command_print(cmd_ctx, "ETM: current target isn't an ARM"); + return ERROR_FAIL; + } + + etm = arm->etm; + if (!etm) { + command_print(cmd_ctx, "current target doesn't have an ETM configured"); + return ERROR_FAIL; + } + + etmv1_tracemode_t tracemode = etm->tracemode; + + switch (argc) + { + case 0: + break; + case 4: + handle_etm_tracemode_command_update(cmd_ctx, args, &tracemode); + break; + default: + command_print(cmd_ctx, "usage: configure trace mode " + " " + " "); + return ERROR_FAIL; + } + + /** + * todo: fail if parameters were invalid for this hardware, + * or couldn't be written; display actual hardware state... + */ + + command_print(cmd_ctx, "current tracemode configuration:"); + + switch (tracemode & ETMV1_TRACE_MASK) + { + case ETMV1_TRACE_NONE: + command_print(cmd_ctx, "data tracing: none"); + break; + case ETMV1_TRACE_DATA: + command_print(cmd_ctx, "data tracing: data only"); + break; + case ETMV1_TRACE_ADDR: + command_print(cmd_ctx, "data tracing: address only"); + break; + case ETMV1_TRACE_DATA | ETMV1_TRACE_ADDR: + command_print(cmd_ctx, "data tracing: address and data"); + break; + } + + switch (tracemode & ETMV1_CONTEXTID_MASK) + { + case ETMV1_CONTEXTID_NONE: + command_print(cmd_ctx, "contextid tracing: none"); + break; + case ETMV1_CONTEXTID_8: + command_print(cmd_ctx, "contextid tracing: 8 bit"); + break; + case ETMV1_CONTEXTID_16: + command_print(cmd_ctx, "contextid tracing: 16 bit"); + break; + case ETMV1_CONTEXTID_32: + command_print(cmd_ctx, "contextid tracing: 32 bit"); + break; + } + + if (tracemode & ETMV1_CYCLE_ACCURATE) + { + command_print(cmd_ctx, "cycle-accurate tracing enabled"); + } + else + { + command_print(cmd_ctx, "cycle-accurate tracing disabled"); + } + + if (tracemode & ETMV1_BRANCH_OUTPUT) + { + command_print(cmd_ctx, "full branch address output enabled"); + } + else + { + command_print(cmd_ctx, "full branch address output disabled"); + } + + /* only update ETM_CTRL register if tracemode changed */ + if (etm->tracemode != tracemode) + { + reg_t *etm_ctrl_reg; + + etm_ctrl_reg = etm_reg_lookup(etm, ETM_CTRL); + if (!etm_ctrl_reg) + return ERROR_FAIL; + + etm_get_reg(etm_ctrl_reg); + + buf_set_u32(etm_ctrl_reg->value, 2, 2, tracemode & ETMV1_TRACE_MASK); + buf_set_u32(etm_ctrl_reg->value, 14, 2, (tracemode & ETMV1_CONTEXTID_MASK) >> 4); + buf_set_u32(etm_ctrl_reg->value, 12, 1, (tracemode & ETMV1_CYCLE_ACCURATE) >> 8); + buf_set_u32(etm_ctrl_reg->value, 8, 1, (tracemode & ETMV1_BRANCH_OUTPUT) >> 9); + etm_store_reg(etm_ctrl_reg); + + etm->tracemode = tracemode; + + /* invalidate old trace data */ + etm->capture_status = TRACE_IDLE; + if (etm->trace_depth > 0) + { + free(etm->trace_data); + etm->trace_data = NULL; + } + etm->trace_depth = 0; + } + + return ERROR_OK; +} + +static int handle_etm_config_command(struct command_context_s *cmd_ctx, + char *cmd, char **args, int argc) +{ + target_t *target; + struct arm *arm; + etm_portmode_t portmode = 0x0; + struct etm *etm_ctx; + int i; + + if (argc != 5) + return ERROR_COMMAND_SYNTAX_ERROR; + + target = get_target(args[0]); + if (!target) + { + LOG_ERROR("target '%s' not defined", args[0]); + return ERROR_FAIL; + } + + arm = target_to_arm(target); + if (!is_arm(arm)) { + command_print(cmd_ctx, "target '%s' is '%s'; not an ARM", + target->cmd_name, target_get_name(target)); + return ERROR_FAIL; + } + + uint8_t port_width; + COMMAND_PARSE_NUMBER(u8, args[1], port_width); + switch (port_width) + { + case 4: + portmode |= ETM_PORT_4BIT; + break; + case 8: + portmode |= ETM_PORT_8BIT; + break; + case 16: + portmode |= ETM_PORT_16BIT; + break; + default: + command_print(cmd_ctx, "unsupported ETM port width '%s', must be 4, 8 or 16", args[1]); + return ERROR_FAIL; + } + + if (strcmp("normal", args[2]) == 0) + { + portmode |= ETM_PORT_NORMAL; + } + else if (strcmp("multiplexed", args[2]) == 0) + { + portmode |= ETM_PORT_MUXED; + } + else if (strcmp("demultiplexed", args[2]) == 0) + { + portmode |= ETM_PORT_DEMUXED; + } + else + { + command_print(cmd_ctx, "unsupported ETM port mode '%s', must be 'normal', 'multiplexed' or 'demultiplexed'", args[2]); + return ERROR_FAIL; + } + + if (strcmp("half", args[3]) == 0) + { + portmode |= ETM_PORT_HALF_CLOCK; + } + else if (strcmp("full", args[3]) == 0) + { + portmode |= ETM_PORT_FULL_CLOCK; + } + else + { + command_print(cmd_ctx, "unsupported ETM port clocking '%s', must be 'full' or 'half'", args[3]); + return ERROR_FAIL; + } + + etm_ctx = calloc(1, sizeof(etm_context_t)); + if (!etm_ctx) { + LOG_DEBUG("out of memory"); + return ERROR_FAIL; + } + + for (i = 0; etm_capture_drivers[i]; i++) + { + if (strcmp(args[4], etm_capture_drivers[i]->name) == 0) + { + int retval; + if ((retval = etm_capture_drivers[i]->register_commands(cmd_ctx)) != ERROR_OK) + { + free(etm_ctx); + return retval; + } + + etm_ctx->capture_driver = etm_capture_drivers[i]; + + break; + } + } + + if (!etm_capture_drivers[i]) + { + /* no supported capture driver found, don't register an ETM */ + free(etm_ctx); + LOG_ERROR("trace capture driver '%s' not found", args[4]); + return ERROR_FAIL; + } + + etm_ctx->target = target; + etm_ctx->trigger_percent = 50; + etm_ctx->trace_data = NULL; + etm_ctx->portmode = portmode; + etm_ctx->core_state = ARMV4_5_STATE_ARM; + + arm->etm = etm_ctx; + + return etm_register_user_commands(cmd_ctx); +} + +static int handle_etm_info_command(struct command_context_s *cmd_ctx, + char *cmd, char **args, int argc) +{ + target_t *target; + struct arm *arm; + etm_context_t *etm; + reg_t *etm_sys_config_reg; + int max_port_size; + + target = get_current_target(cmd_ctx); + arm = target_to_arm(target); + if (!is_arm(arm)) + { + command_print(cmd_ctx, "ETM: current target isn't an ARM"); + return ERROR_FAIL; + } + + etm = arm->etm; + if (!etm) + { + command_print(cmd_ctx, "current target doesn't have an ETM configured"); + return ERROR_FAIL; + } + + command_print(cmd_ctx, "ETM v%d.%d", + etm->bcd_vers >> 4, etm->bcd_vers & 0xf); + command_print(cmd_ctx, "pairs of address comparators: %i", + (int) (etm->config >> 0) & 0x0f); + command_print(cmd_ctx, "data comparators: %i", + (int) (etm->config >> 4) & 0x0f); + command_print(cmd_ctx, "memory map decoders: %i", + (int) (etm->config >> 8) & 0x1f); + command_print(cmd_ctx, "number of counters: %i", + (int) (etm->config >> 13) & 0x07); + command_print(cmd_ctx, "sequencer %spresent", + (int) (etm->config & (1 << 16)) ? "" : "not "); + command_print(cmd_ctx, "number of ext. inputs: %i", + (int) (etm->config >> 17) & 0x07); + command_print(cmd_ctx, "number of ext. outputs: %i", + (int) (etm->config >> 20) & 0x07); + command_print(cmd_ctx, "FIFO full %spresent", + (int) (etm->config & (1 << 23)) ? "" : "not "); + if (etm->bcd_vers < 0x20) + command_print(cmd_ctx, "protocol version: %i", + (int) (etm->config >> 28) & 0x07); + else { + command_print(cmd_ctx, "trace start/stop %spresent", + (etm->config & (1 << 26)) ? "" : "not "); + command_print(cmd_ctx, "number of context comparators: %i", + (int) (etm->config >> 24) & 0x03); + } + + /* SYS_CONFIG isn't present before ETMv1.2 */ + etm_sys_config_reg = etm_reg_lookup(etm, ETM_SYS_CONFIG); + if (!etm_sys_config_reg) + return ERROR_OK; + + etm_get_reg(etm_sys_config_reg); + + switch (buf_get_u32(etm_sys_config_reg->value, 0, 3)) + { + case 0: + max_port_size = 4; + break; + case 1: + max_port_size = 8; + break; + case 2: + max_port_size = 16; + break; + default: + LOG_ERROR("Illegal max_port_size"); + return ERROR_FAIL; + } + command_print(cmd_ctx, "max. port size: %i", max_port_size); + + command_print(cmd_ctx, "half-rate clocking %ssupported", + (buf_get_u32(etm_sys_config_reg->value, 3, 1) == 1) ? "" : "not "); + command_print(cmd_ctx, "full-rate clocking %ssupported", + (buf_get_u32(etm_sys_config_reg->value, 4, 1) == 1) ? "" : "not "); + command_print(cmd_ctx, "normal trace format %ssupported", + (buf_get_u32(etm_sys_config_reg->value, 5, 1) == 1) ? "" : "not "); + command_print(cmd_ctx, "multiplex trace format %ssupported", + (buf_get_u32(etm_sys_config_reg->value, 6, 1) == 1) ? "" : "not "); + command_print(cmd_ctx, "demultiplex trace format %ssupported", + (buf_get_u32(etm_sys_config_reg->value, 7, 1) == 1) ? "" : "not "); + command_print(cmd_ctx, "FIFO full %ssupported", + (buf_get_u32(etm_sys_config_reg->value, 8, 1) == 1) ? "" : "not "); + + return ERROR_OK; +} + +static int handle_etm_status_command(struct command_context_s *cmd_ctx, + char *cmd, char **args, int argc) +{ + target_t *target; + struct arm *arm; + etm_context_t *etm; + trace_status_t trace_status; + + target = get_current_target(cmd_ctx); + arm = target_to_arm(target); + if (!is_arm(arm)) + { + command_print(cmd_ctx, "ETM: current target isn't an ARM"); + return ERROR_FAIL; + } + + etm = arm->etm; + if (!etm) + { + command_print(cmd_ctx, "current target doesn't have an ETM configured"); + return ERROR_FAIL; + } + + /* ETM status */ + if (etm->bcd_vers >= 0x11) { + reg_t *reg; + + reg = etm_reg_lookup(etm, ETM_STATUS); + if (!reg) + return ERROR_FAIL; + if (etm_get_reg(reg) == ERROR_OK) { + unsigned s = buf_get_u32(reg->value, 0, reg->size); + + command_print(cmd_ctx, "etm: %s%s%s%s", + /* bit(1) == progbit */ + (etm->bcd_vers >= 0x12) + ? ((s & (1 << 1)) + ? "disabled" : "enabled") + : "?", + ((s & (1 << 3)) && etm->bcd_vers >= 0x31) + ? " triggered" : "", + ((s & (1 << 2)) && etm->bcd_vers >= 0x12) + ? " start/stop" : "", + ((s & (1 << 0)) && etm->bcd_vers >= 0x11) + ? " untraced-overflow" : ""); + } /* else ignore and try showing trace port status */ + } + + /* Trace Port Driver status */ + trace_status = etm->capture_driver->status(etm); + if (trace_status == TRACE_IDLE) + { + command_print(cmd_ctx, "%s: idle", etm->capture_driver->name); + } + else + { + static char *completed = " completed"; + static char *running = " is running"; + static char *overflowed = ", overflowed"; + static char *triggered = ", triggered"; + + command_print(cmd_ctx, "%s: trace collection%s%s%s", + etm->capture_driver->name, + (trace_status & TRACE_RUNNING) ? running : completed, + (trace_status & TRACE_OVERFLOWED) ? overflowed : "", + (trace_status & TRACE_TRIGGERED) ? triggered : ""); + + if (etm->trace_depth > 0) + { + command_print(cmd_ctx, "%i frames of trace data read", + (int)(etm->trace_depth)); + } + } + + return ERROR_OK; +} + +static int handle_etm_image_command(struct command_context_s *cmd_ctx, + char *cmd, char **args, int argc) +{ + target_t *target; + struct arm *arm; + etm_context_t *etm_ctx; + + if (argc < 1) + { + command_print(cmd_ctx, "usage: etm image [base address] [type]"); + return ERROR_FAIL; + } + + target = get_current_target(cmd_ctx); + arm = target_to_arm(target); + if (!is_arm(arm)) + { + command_print(cmd_ctx, "ETM: current target isn't an ARM"); + return ERROR_FAIL; + } + + etm_ctx = arm->etm; + if (!etm_ctx) + { + command_print(cmd_ctx, "current target doesn't have an ETM configured"); + return ERROR_FAIL; + } + + if (etm_ctx->image) + { + image_close(etm_ctx->image); + free(etm_ctx->image); + command_print(cmd_ctx, "previously loaded image found and closed"); + } + + etm_ctx->image = malloc(sizeof(image_t)); + etm_ctx->image->base_address_set = 0; + etm_ctx->image->start_address_set = 0; + + /* a base address isn't always necessary, default to 0x0 (i.e. don't relocate) */ + if (argc >= 2) + { + etm_ctx->image->base_address_set = 1; + COMMAND_PARSE_NUMBER(int, args[1], etm_ctx->image->base_address); + } + else + { + etm_ctx->image->base_address_set = 0; + } + + if (image_open(etm_ctx->image, args[0], (argc >= 3) ? args[2] : NULL) != ERROR_OK) + { + free(etm_ctx->image); + etm_ctx->image = NULL; + return ERROR_FAIL; + } + + return ERROR_OK; +} + +static int handle_etm_dump_command(struct command_context_s *cmd_ctx, + char *cmd, char **args, int argc) +{ + fileio_t file; + target_t *target; + struct arm *arm; + etm_context_t *etm_ctx; + uint32_t i; + + if (argc != 1) + { + command_print(cmd_ctx, "usage: etm dump "); + return ERROR_FAIL; + } + + target = get_current_target(cmd_ctx); + arm = target_to_arm(target); + if (!is_arm(arm)) + { + command_print(cmd_ctx, "ETM: current target isn't an ARM"); + return ERROR_FAIL; + } + + etm_ctx = arm->etm; + if (!etm_ctx) + { + command_print(cmd_ctx, "current target doesn't have an ETM configured"); + return ERROR_FAIL; + } + + if (etm_ctx->capture_driver->status == TRACE_IDLE) + { + command_print(cmd_ctx, "trace capture wasn't enabled, no trace data captured"); + return ERROR_OK; + } + + if (etm_ctx->capture_driver->status(etm_ctx) & TRACE_RUNNING) + { + /* TODO: if on-the-fly capture is to be supported, this needs to be changed */ + command_print(cmd_ctx, "trace capture not completed"); + return ERROR_FAIL; + } + + /* read the trace data if it wasn't read already */ + if (etm_ctx->trace_depth == 0) + etm_ctx->capture_driver->read_trace(etm_ctx); + + if (fileio_open(&file, args[0], FILEIO_WRITE, FILEIO_BINARY) != ERROR_OK) + { + return ERROR_FAIL; + } + + fileio_write_u32(&file, etm_ctx->capture_status); + fileio_write_u32(&file, etm_ctx->portmode); + fileio_write_u32(&file, etm_ctx->tracemode); + fileio_write_u32(&file, etm_ctx->trace_depth); + + for (i = 0; i < etm_ctx->trace_depth; i++) + { + fileio_write_u32(&file, etm_ctx->trace_data[i].pipestat); + fileio_write_u32(&file, etm_ctx->trace_data[i].packet); + fileio_write_u32(&file, etm_ctx->trace_data[i].flags); + } + + fileio_close(&file); + + return ERROR_OK; +} + +static int handle_etm_load_command(struct command_context_s *cmd_ctx, + char *cmd, char **args, int argc) +{ + fileio_t file; + target_t *target; + struct arm *arm; + etm_context_t *etm_ctx; + uint32_t i; + + if (argc != 1) + { + command_print(cmd_ctx, "usage: etm load "); + return ERROR_FAIL; + } + + target = get_current_target(cmd_ctx); + arm = target_to_arm(target); + if (!is_arm(arm)) + { + command_print(cmd_ctx, "ETM: current target isn't an ARM"); + return ERROR_FAIL; + } + + etm_ctx = arm->etm; + if (!etm_ctx) + { + command_print(cmd_ctx, "current target doesn't have an ETM configured"); + return ERROR_FAIL; + } + + if (etm_ctx->capture_driver->status(etm_ctx) & TRACE_RUNNING) + { + command_print(cmd_ctx, "trace capture running, stop first"); + return ERROR_FAIL; + } + + if (fileio_open(&file, args[0], FILEIO_READ, FILEIO_BINARY) != ERROR_OK) + { + return ERROR_FAIL; + } + + if (file.size % 4) + { + command_print(cmd_ctx, "size isn't a multiple of 4, no valid trace data"); + fileio_close(&file); + return ERROR_FAIL; + } + + if (etm_ctx->trace_depth > 0) + { + free(etm_ctx->trace_data); + etm_ctx->trace_data = NULL; + } + + { + uint32_t tmp; + fileio_read_u32(&file, &tmp); etm_ctx->capture_status = tmp; + fileio_read_u32(&file, &tmp); etm_ctx->portmode = tmp; + fileio_read_u32(&file, &tmp); etm_ctx->tracemode = tmp; + fileio_read_u32(&file, &etm_ctx->trace_depth); + } + etm_ctx->trace_data = malloc(sizeof(etmv1_trace_data_t) * etm_ctx->trace_depth); + if (etm_ctx->trace_data == NULL) + { + command_print(cmd_ctx, "not enough memory to perform operation"); + fileio_close(&file); + return ERROR_FAIL; + } + + for (i = 0; i < etm_ctx->trace_depth; i++) + { + uint32_t pipestat, packet, flags; + fileio_read_u32(&file, &pipestat); + fileio_read_u32(&file, &packet); + fileio_read_u32(&file, &flags); + etm_ctx->trace_data[i].pipestat = pipestat & 0xff; + etm_ctx->trace_data[i].packet = packet & 0xffff; + etm_ctx->trace_data[i].flags = flags; + } + + fileio_close(&file); + + return ERROR_OK; +} + +static int handle_etm_trigger_percent_command(struct command_context_s *cmd_ctx, + char *cmd, char **args, int argc) +{ + target_t *target; + struct arm *arm; + etm_context_t *etm_ctx; + + target = get_current_target(cmd_ctx); + arm = target_to_arm(target); + if (!is_arm(arm)) + { + command_print(cmd_ctx, "ETM: current target isn't an ARM"); + return ERROR_FAIL; + } + + etm_ctx = arm->etm; + if (!etm_ctx) + { + command_print(cmd_ctx, "current target doesn't have an ETM configured"); + return ERROR_FAIL; + } + + if (argc > 0) + { + uint32_t new_value; + COMMAND_PARSE_NUMBER(u32, args[0], new_value); + + if ((new_value < 2) || (new_value > 100)) + { + command_print(cmd_ctx, "valid settings are 2%% to 100%%"); + } + else + { + etm_ctx->trigger_percent = new_value; + } + } + + command_print(cmd_ctx, "%i percent of the tracebuffer reserved for after the trigger", ((int)(etm_ctx->trigger_percent))); + + return ERROR_OK; +} + +static int handle_etm_start_command(struct command_context_s *cmd_ctx, + char *cmd, char **args, int argc) +{ + target_t *target; + struct arm *arm; + etm_context_t *etm_ctx; + reg_t *etm_ctrl_reg; + + target = get_current_target(cmd_ctx); + arm = target_to_arm(target); + if (!is_arm(arm)) + { + command_print(cmd_ctx, "ETM: current target isn't an ARM"); + return ERROR_FAIL; + } + + etm_ctx = arm->etm; + if (!etm_ctx) + { + command_print(cmd_ctx, "current target doesn't have an ETM configured"); + return ERROR_FAIL; + } + + /* invalidate old tracing data */ + etm_ctx->capture_status = TRACE_IDLE; + if (etm_ctx->trace_depth > 0) + { + free(etm_ctx->trace_data); + etm_ctx->trace_data = NULL; + } + etm_ctx->trace_depth = 0; + + etm_ctrl_reg = etm_reg_lookup(etm_ctx, ETM_CTRL); + if (!etm_ctrl_reg) + return ERROR_FAIL; + + etm_get_reg(etm_ctrl_reg); + + /* Clear programming bit (10), set port selection bit (11) */ + buf_set_u32(etm_ctrl_reg->value, 10, 2, 0x2); + + etm_store_reg(etm_ctrl_reg); + jtag_execute_queue(); + + etm_ctx->capture_driver->start_capture(etm_ctx); + + return ERROR_OK; +} + +static int handle_etm_stop_command(struct command_context_s *cmd_ctx, + char *cmd, char **args, int argc) +{ + target_t *target; + struct arm *arm; + etm_context_t *etm_ctx; + reg_t *etm_ctrl_reg; + + target = get_current_target(cmd_ctx); + arm = target_to_arm(target); + if (!is_arm(arm)) + { + command_print(cmd_ctx, "ETM: current target isn't an ARM"); + return ERROR_FAIL; + } + + etm_ctx = arm->etm; + if (!etm_ctx) + { + command_print(cmd_ctx, "current target doesn't have an ETM configured"); + return ERROR_FAIL; + } + + etm_ctrl_reg = etm_reg_lookup(etm_ctx, ETM_CTRL); + if (!etm_ctrl_reg) + return ERROR_FAIL; + + etm_get_reg(etm_ctrl_reg); + + /* Set programming bit (10), clear port selection bit (11) */ + buf_set_u32(etm_ctrl_reg->value, 10, 2, 0x1); + + etm_store_reg(etm_ctrl_reg); + jtag_execute_queue(); + + etm_ctx->capture_driver->stop_capture(etm_ctx); + + return ERROR_OK; +} + +static int handle_etm_analyze_command(struct command_context_s *cmd_ctx, + char *cmd, char **args, int argc) +{ + target_t *target; + struct arm *arm; + etm_context_t *etm_ctx; + int retval; + + target = get_current_target(cmd_ctx); + arm = target_to_arm(target); + if (!is_arm(arm)) + { + command_print(cmd_ctx, "ETM: current target isn't an ARM"); + return ERROR_FAIL; + } + + etm_ctx = arm->etm; + if (!etm_ctx) + { + command_print(cmd_ctx, "current target doesn't have an ETM configured"); + return ERROR_FAIL; + } + + if ((retval = etmv1_analyze_trace(etm_ctx, cmd_ctx)) != ERROR_OK) + { + switch (retval) + { + case ERROR_ETM_ANALYSIS_FAILED: + command_print(cmd_ctx, "further analysis failed (corrupted trace data or just end of data"); + break; + case ERROR_TRACE_INSTRUCTION_UNAVAILABLE: + command_print(cmd_ctx, "no instruction for current address available, analysis aborted"); + break; + case ERROR_TRACE_IMAGE_UNAVAILABLE: + command_print(cmd_ctx, "no image available for trace analysis"); + break; + default: + command_print(cmd_ctx, "unknown error: %i", retval); + } + } + + return retval; +} + +int etm_register_commands(struct command_context_s *cmd_ctx) +{ + etm_cmd = register_command(cmd_ctx, NULL, "etm", NULL, COMMAND_ANY, "Embedded Trace Macrocell"); + + register_command(cmd_ctx, etm_cmd, "config", handle_etm_config_command, + COMMAND_CONFIG, "etm config "); + + return ERROR_OK; +} + +static int etm_register_user_commands(struct command_context_s *cmd_ctx) +{ + register_command(cmd_ctx, etm_cmd, "tracemode", handle_etm_tracemode_command, + COMMAND_EXEC, "configure/display trace mode: " + " " + " "); + + register_command(cmd_ctx, etm_cmd, "info", handle_etm_info_command, + COMMAND_EXEC, "display info about the current target's ETM"); + + register_command(cmd_ctx, etm_cmd, "trigger_percent", handle_etm_trigger_percent_command, + COMMAND_EXEC, "amount () of trace buffer to be filled after the trigger occured"); + register_command(cmd_ctx, etm_cmd, "status", handle_etm_status_command, + COMMAND_EXEC, "display current target's ETM status"); + register_command(cmd_ctx, etm_cmd, "start", handle_etm_start_command, + COMMAND_EXEC, "start ETM trace collection"); + register_command(cmd_ctx, etm_cmd, "stop", handle_etm_stop_command, + COMMAND_EXEC, "stop ETM trace collection"); + + register_command(cmd_ctx, etm_cmd, "analyze", handle_etm_analyze_command, + COMMAND_EXEC, "anaylze collected ETM trace"); + + register_command(cmd_ctx, etm_cmd, "image", handle_etm_image_command, + COMMAND_EXEC, "load image from [base address]"); + + register_command(cmd_ctx, etm_cmd, "dump", handle_etm_dump_command, + COMMAND_EXEC, "dump captured trace data "); + register_command(cmd_ctx, etm_cmd, "load", handle_etm_load_command, + COMMAND_EXEC, "load trace data for analysis "); + + return ERROR_OK; +}