* Copyright (C) 2007,2008 Øyvind Harboe *
* oyvind.harboe@zylin.com *
* *
+ * Copyright (C) 2011 by Drasko DRASKOVIC *
+ * drasko.draskovic@gmail.com *
+ * *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
#include "algorithm.h"
#include "register.h"
-char* mips32_core_reg_list[] =
+static char* mips32_core_reg_list[] =
{
"zero", "at", "v0", "v1", "a0", "a1", "a2", "a3",
"t0", "t1", "t2", "t3", "t4", "t5", "t6", "t7",
"status", "lo", "hi", "badvaddr", "cause", "pc"
};
-const char *mips_isa_strings[] =
+static const char *mips_isa_strings[] =
{
"MIPS32", "MIPS16e"
};
-struct mips32_core_reg mips32_core_reg_list_arch_info[MIPS32NUMCOREREGS] =
+static struct mips32_core_reg mips32_core_reg_list_arch_info[MIPS32NUMCOREREGS] =
{
{0, NULL, NULL},
{1, NULL, NULL},
#define MIPS32NUMFPREGS 34 + 18
-uint8_t mips32_gdb_dummy_fp_value[] = {0, 0, 0, 0};
+static uint8_t mips32_gdb_dummy_fp_value[] = {0, 0, 0, 0};
-struct reg mips32_gdb_dummy_fp_reg =
+static struct reg mips32_gdb_dummy_fp_reg =
{
.name = "GDB dummy floating-point register",
.value = mips32_gdb_dummy_fp_value,
.arch_info = NULL,
};
-int mips32_get_core_reg(struct reg *reg)
+static int mips32_get_core_reg(struct reg *reg)
{
int retval;
struct mips32_core_reg *mips32_reg = reg->arch_info;
return retval;
}
-int mips32_set_core_reg(struct reg *reg, uint8_t *buf)
+static int mips32_set_core_reg(struct reg *reg, uint8_t *buf)
{
struct mips32_core_reg *mips32_reg = reg->arch_info;
struct target *target = mips32_reg->target;
return ERROR_OK;
}
-int mips32_read_core_reg(struct target *target, int num)
+static int mips32_read_core_reg(struct target *target, int num)
{
uint32_t reg_value;
- struct mips32_core_reg *mips_core_reg;
/* get pointers to arch-specific information */
struct mips32_common *mips32 = target_to_mips32(target);
if ((num < 0) || (num >= MIPS32NUMCOREREGS))
return ERROR_INVALID_ARGUMENTS;
- mips_core_reg = mips32->core_cache->reg_list[num].arch_info;
reg_value = mips32->core_regs[num];
buf_set_u32(mips32->core_cache->reg_list[num].value, 0, 32, reg_value);
mips32->core_cache->reg_list[num].valid = 1;
return ERROR_OK;
}
-int mips32_write_core_reg(struct target *target, int num)
+static int mips32_write_core_reg(struct target *target, int num)
{
uint32_t reg_value;
- struct mips32_core_reg *mips_core_reg;
/* get pointers to arch-specific information */
struct mips32_common *mips32 = target_to_mips32(target);
return ERROR_INVALID_ARGUMENTS;
reg_value = buf_get_u32(mips32->core_cache->reg_list[num].value, 0, 32);
- mips_core_reg = mips32->core_cache->reg_list[num].arch_info;
mips32->core_regs[num] = reg_value;
LOG_DEBUG("write core reg %i value 0x%" PRIx32 "", num , reg_value);
mips32->core_cache->reg_list[num].valid = 1;
{
target->arch_info = mips32;
mips32->common_magic = MIPS32_COMMON_MAGIC;
+ mips32->fast_data_area = NULL;
/* has breakpoint/watchpint unit been scanned */
mips32->bp_scanned = 0;
}
pc = buf_get_u32(mips32->core_cache->reg_list[MIPS32_PC].value, 0, 32);
- if (pc != exit_point)
+ if (exit_point && (pc != exit_point))
{
- LOG_DEBUG("failed algoritm halted at 0x%" PRIx32 " ", pc);
+ LOG_DEBUG("failed algorithm halted at 0x%" PRIx32 " ", pc);
return ERROR_TARGET_TIMEOUT;
}
}
/* refresh core register cache */
- for (unsigned i = 0; i < MIPS32NUMCOREREGS; i++)
+ for (i = 0; i < MIPS32NUMCOREREGS; i++)
{
if (!mips32->core_cache->reg_list[i].valid)
mips32->read_core_reg(target, i);
}
}
- for (int i = 0; i < num_reg_params; i++)
+ for (i = 0; i < num_reg_params; i++)
{
struct reg *reg = register_get_by_name(mips32->core_cache, reg_params[i].reg_name, 0);
return retval;
}
+ /* check if target endianness settings matches debug control register */
+ if ( ( (dcr & EJTAG_DCR_ENM) && (target->endianness == TARGET_LITTLE_ENDIAN) ) ||
+ ( !(dcr & EJTAG_DCR_ENM) && (target->endianness == TARGET_BIG_ENDIAN) ) )
+ {
+ LOG_WARNING("DCR endianness settings does not match target settings");
+ }
+
LOG_DEBUG("DCR 0x%" PRIx32 " numinst %i numdata %i", dcr, mips32->num_inst_bpoints,
mips32->num_data_bpoints);
int retval;
uint32_t i;
+ /* see contib/loaders/checksum/mips32.s for src */
+
static const uint32_t mips_crc_code[] =
{
0x248C0000, /* addiu $t4, $a0, 0 */
init_reg_param(®_params[1], "a1", 32, PARAM_OUT);
buf_set_u32(reg_params[1].value, 0, 32, count);
+ int timeout = 20000 * (1 + (count / (1024 * 1024)));
+
if ((retval = target_run_algorithm(target, 0, NULL, 2, reg_params,
- crc_algorithm->address, crc_algorithm->address + (sizeof(mips_crc_code)-4), 10000,
+ crc_algorithm->address, crc_algorithm->address + (sizeof(mips_crc_code)-4), timeout,
&mips32_info)) != ERROR_OK)
{
destroy_reg_param(®_params[0]);
return ERROR_OK;
}
+
+static int mips32_verify_pointer(struct command_context *cmd_ctx,
+ struct mips32_common *mips32)
+{
+ if (mips32->common_magic != MIPS32_COMMON_MAGIC) {
+ command_print(cmd_ctx, "target is not an MIPS32");
+ return ERROR_TARGET_INVALID;
+ }
+ return ERROR_OK;
+}
+
+/**
+ * MIPS32 targets expose command interface
+ * to manipulate CP0 registers
+ */
+COMMAND_HANDLER(mips32_handle_cp0_command)
+{
+ int retval;
+ struct target *target = get_current_target(CMD_CTX);
+ struct mips32_common *mips32 = target_to_mips32(target);
+ struct mips_ejtag *ejtag_info = &mips32->ejtag_info;
+
+
+ retval = mips32_verify_pointer(CMD_CTX, mips32);
+ if (retval != ERROR_OK)
+ return retval;
+
+ if (target->state != TARGET_HALTED)
+ {
+ command_print(CMD_CTX, "target must be stopped for \"%s\" command", CMD_NAME);
+ return ERROR_OK;
+ }
+
+ /* two or more argument, access a single register/select (write if third argument is given) */
+ if (CMD_ARGC < 2)
+ {
+ command_print(CMD_CTX, "command requires more arguments.");
+ }
+ else
+ {
+ uint32_t cp0_reg, cp0_sel;
+ COMMAND_PARSE_NUMBER(u32, CMD_ARGV[0], cp0_reg);
+ COMMAND_PARSE_NUMBER(u32, CMD_ARGV[1], cp0_sel);
+
+ if (CMD_ARGC == 2)
+ {
+ uint32_t value;
+
+ if ((retval = mips32_cp0_read(ejtag_info, &value, cp0_reg, cp0_sel)) != ERROR_OK)
+ {
+ command_print(CMD_CTX,
+ "couldn't access reg %" PRIi32,
+ cp0_reg);
+ return ERROR_OK;
+ }
+ if ((retval = jtag_execute_queue()) != ERROR_OK)
+ {
+ return retval;
+ }
+
+ command_print(CMD_CTX, "cp0 reg %" PRIi32 ", select %" PRIi32 ": %8.8" PRIx32,
+ cp0_reg, cp0_sel, value);
+ }
+ else if (CMD_ARGC == 3)
+ {
+ uint32_t value;
+ COMMAND_PARSE_NUMBER(u32, CMD_ARGV[2], value);
+ if ((retval = mips32_cp0_write(ejtag_info, value, cp0_reg, cp0_sel)) != ERROR_OK)
+ {
+ command_print(CMD_CTX,
+ "couldn't access cp0 reg %" PRIi32 ", select %" PRIi32,
+ cp0_reg, cp0_sel);
+ return ERROR_OK;
+ }
+ command_print(CMD_CTX, "cp0 reg %" PRIi32 ", select %" PRIi32 ": %8.8" PRIx32,
+ cp0_reg, cp0_sel, value);
+ }
+ }
+
+ return ERROR_OK;
+}
+
+static const struct command_registration mips32_exec_command_handlers[] = {
+ {
+ .name = "cp0",
+ .handler = mips32_handle_cp0_command,
+ .mode = COMMAND_EXEC,
+ .usage = "regnum select [value]",
+ .help = "display/modify cp0 register",
+ },
+ COMMAND_REGISTRATION_DONE
+};
+
+const struct command_registration mips32_command_handlers[] = {
+ {
+ .name = "mips32",
+ .mode = COMMAND_ANY,
+ .help = "mips32 command group",
+ .chain = mips32_exec_command_handlers,
+ },
+ COMMAND_REGISTRATION_DONE
+};
+
projects / fw / openocd / blobdiff