diff options
Diffstat (limited to 'src/target/target.c')
| -rw-r--r-- | src/target/target.c | 321 |
1 files changed, 321 insertions, 0 deletions
diff --git a/src/target/target.c b/src/target/target.c index b72dc53..473538a 100644 --- a/src/target/target.c +++ b/src/target/target.c @@ -4604,6 +4604,161 @@ static int target_mem2array(Jim_Interp *interp, struct target *target, int argc, return e; } +static int target_jim_read_memory(Jim_Interp *interp, int argc, + Jim_Obj * const *argv) +{ + /* + * argv[1] = memory address + * argv[2] = desired element width in bits + * argv[3] = number of elements to read + * argv[4] = optional "phys" + */ + + if (argc < 4 || argc > 5) { + Jim_WrongNumArgs(interp, 1, argv, "address width count ['phys']"); + return JIM_ERR; + } + + /* Arg 1: Memory address. */ + jim_wide wide_addr; + int e; + e = Jim_GetWide(interp, argv[1], &wide_addr); + + if (e != JIM_OK) + return e; + + target_addr_t addr = (target_addr_t)wide_addr; + + /* Arg 2: Bit width of one element. */ + long l; + e = Jim_GetLong(interp, argv[2], &l); + + if (e != JIM_OK) + return e; + + const unsigned int width_bits = l; + + /* Arg 3: Number of elements to read. */ + e = Jim_GetLong(interp, argv[3], &l); + + if (e != JIM_OK) + return e; + + size_t count = l; + + /* Arg 4: Optional 'phys'. */ + bool is_phys = false; + + if (argc > 4) { + const char *phys = Jim_GetString(argv[4], NULL); + + if (strcmp(phys, "phys")) { + Jim_SetResultFormatted(interp, "invalid argument '%s', must be 'phys'", phys); + return JIM_ERR; + } + + is_phys = true; + } + + switch (width_bits) { + case 8: + case 16: + case 32: + case 64: + break; + default: + Jim_SetResultString(interp, "invalid width, must be 8, 16, 32 or 64", -1); + return JIM_ERR; + } + + const unsigned int width = width_bits / 8; + + if ((addr + (count * width)) < addr) { + Jim_SetResultString(interp, "read_memory: addr + count wraps to zero", -1); + return JIM_ERR; + } + + if (count > 65536) { + Jim_SetResultString(interp, "read_memory: too large read request, exeeds 64K elements", -1); + return JIM_ERR; + } + + struct command_context *cmd_ctx = current_command_context(interp); + assert(cmd_ctx != NULL); + struct target *target = get_current_target(cmd_ctx); + + const size_t buffersize = 4096; + uint8_t *buffer = malloc(buffersize); + + if (!buffer) { + LOG_ERROR("Failed to allocate memory"); + return JIM_ERR; + } + + Jim_Obj *result_list = Jim_NewListObj(interp, NULL, 0); + Jim_IncrRefCount(result_list); + + while (count > 0) { + const unsigned int max_chunk_len = buffersize / width; + const size_t chunk_len = MIN(count, max_chunk_len); + + int retval; + + if (is_phys) + retval = target_read_phys_memory(target, addr, width, chunk_len, buffer); + else + retval = target_read_memory(target, addr, width, chunk_len, buffer); + + if (retval != ERROR_OK) { + LOG_ERROR("read_memory: read at " TARGET_ADDR_FMT " with width=%u and count=%zu failed", + addr, width_bits, chunk_len); + Jim_SetResultString(interp, "read_memory: failed to read memory", -1); + e = JIM_ERR; + break; + } + + for (size_t i = 0; i < chunk_len ; i++) { + uint64_t v = 0; + + switch (width) { + case 8: + v = target_buffer_get_u64(target, &buffer[i * width]); + break; + case 4: + v = target_buffer_get_u32(target, &buffer[i * width]); + break; + case 2: + v = target_buffer_get_u16(target, &buffer[i * width]); + break; + case 1: + v = buffer[i]; + break; + } + + char value_buf[11]; + snprintf(value_buf, sizeof(value_buf), "0x%" PRIx64, v); + + Jim_ListAppendElement(interp, result_list, + Jim_NewStringObj(interp, value_buf, -1)); + } + + count -= chunk_len; + addr += chunk_len * width; + } + + free(buffer); + + if (e != JIM_OK) { + Jim_DecrRefCount(interp, result_list); + return e; + } + + Jim_SetResult(interp, result_list); + Jim_DecrRefCount(interp, result_list); + + return JIM_OK; +} + static int get_u64_array_element(Jim_Interp *interp, const char *varname, size_t idx, uint64_t *val) { char *namebuf = alloc_printf("%s(%zu)", varname, idx); @@ -4814,6 +4969,144 @@ static int target_array2mem(Jim_Interp *interp, struct target *target, return e; } +static int target_jim_write_memory(Jim_Interp *interp, int argc, + Jim_Obj * const *argv) +{ + /* + * argv[1] = memory address + * argv[2] = desired element width in bits + * argv[3] = list of data to write + * argv[4] = optional "phys" + */ + + if (argc < 4 || argc > 5) { + Jim_WrongNumArgs(interp, 1, argv, "address width data ['phys']"); + return JIM_ERR; + } + + /* Arg 1: Memory address. */ + int e; + jim_wide wide_addr; + e = Jim_GetWide(interp, argv[1], &wide_addr); + + if (e != JIM_OK) + return e; + + target_addr_t addr = (target_addr_t)wide_addr; + + /* Arg 2: Bit width of one element. */ + long l; + e = Jim_GetLong(interp, argv[2], &l); + + if (e != JIM_OK) + return e; + + const unsigned int width_bits = l; + size_t count = Jim_ListLength(interp, argv[3]); + + /* Arg 4: Optional 'phys'. */ + bool is_phys = false; + + if (argc > 4) { + const char *phys = Jim_GetString(argv[4], NULL); + + if (strcmp(phys, "phys")) { + Jim_SetResultFormatted(interp, "invalid argument '%s', must be 'phys'", phys); + return JIM_ERR; + } + + is_phys = true; + } + + switch (width_bits) { + case 8: + case 16: + case 32: + case 64: + break; + default: + Jim_SetResultString(interp, "invalid width, must be 8, 16, 32 or 64", -1); + return JIM_ERR; + } + + const unsigned int width = width_bits / 8; + + if ((addr + (count * width)) < addr) { + Jim_SetResultString(interp, "write_memory: addr + len wraps to zero", -1); + return JIM_ERR; + } + + if (count > 65536) { + Jim_SetResultString(interp, "write_memory: too large memory write request, exceeds 64K elements", -1); + return JIM_ERR; + } + + struct command_context *cmd_ctx = current_command_context(interp); + assert(cmd_ctx != NULL); + struct target *target = get_current_target(cmd_ctx); + + const size_t buffersize = 4096; + uint8_t *buffer = malloc(buffersize); + + if (!buffer) { + LOG_ERROR("Failed to allocate memory"); + return JIM_ERR; + } + + size_t j = 0; + + while (count > 0) { + const unsigned int max_chunk_len = buffersize / width; + const size_t chunk_len = MIN(count, max_chunk_len); + + for (size_t i = 0; i < chunk_len; i++, j++) { + Jim_Obj *tmp = Jim_ListGetIndex(interp, argv[3], j); + jim_wide element_wide; + Jim_GetWide(interp, tmp, &element_wide); + + const uint64_t v = element_wide; + + switch (width) { + case 8: + target_buffer_set_u64(target, &buffer[i * width], v); + break; + case 4: + target_buffer_set_u32(target, &buffer[i * width], v); + break; + case 2: + target_buffer_set_u16(target, &buffer[i * width], v); + break; + case 1: + buffer[i] = v & 0x0ff; + break; + } + } + + count -= chunk_len; + + int retval; + + if (is_phys) + retval = target_write_phys_memory(target, addr, width, chunk_len, buffer); + else + retval = target_write_memory(target, addr, width, chunk_len, buffer); + + if (retval != ERROR_OK) { + LOG_ERROR("write_memory: write at " TARGET_ADDR_FMT " with width=%u and count=%zu failed", + addr, width_bits, chunk_len); + Jim_SetResultString(interp, "write_memory: failed to write memory", -1); + e = JIM_ERR; + break; + } + + addr += chunk_len * width; + } + + free(buffer); + + return e; +} + /* FIX? should we propagate errors here rather than printing them * and continuing? */ @@ -5798,6 +6091,20 @@ static const struct command_registration target_instance_command_handlers[] = { .usage = "dict", }, { + .name = "read_memory", + .mode = COMMAND_EXEC, + .jim_handler = target_jim_read_memory, + .help = "Read Tcl list of 8/16/32/64 bit numbers from target memory", + .usage = "address width count ['phys']", + }, + { + .name = "write_memory", + .mode = COMMAND_EXEC, + .jim_handler = target_jim_write_memory, + .help = "Write Tcl list of 8/16/32/64 bit numbers to target memory", + .usage = "address width data ['phys']", + }, + { .name = "eventlist", .handler = handle_target_event_list, .mode = COMMAND_EXEC, @@ -6894,6 +7201,20 @@ static const struct command_registration target_exec_command_handlers[] = { .usage = "dict", }, { + .name = "read_memory", + .mode = COMMAND_EXEC, + .jim_handler = target_jim_read_memory, + .help = "Read Tcl list of 8/16/32/64 bit numbers from target memory", + .usage = "address width count ['phys']", + }, + { + .name = "write_memory", + .mode = COMMAND_EXEC, + .jim_handler = target_jim_write_memory, + .help = "Write Tcl list of 8/16/32/64 bit numbers to target memory", + .usage = "address width data ['phys']", + }, + { .name = "reset_nag", .handler = handle_target_reset_nag, .mode = COMMAND_ANY, |