* Copyright (C) 2008 by Spencer Oliver *
* spen@spen-soft.co.uk *
* *
- * Copyright (C) 2007,2008 Øyvind Harboe *
+ * Copyright (C) 2007,2008 Øyvind Harboe *
* oyvind.harboe@zylin.com *
* *
* This program is free software; you can redistribute it and/or modify *
* along with this program; if not, write to the *
* Free Software Foundation, Inc., *
* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
+ * *
+ * ARMv7-M Architecture, Application Level Reference Manual *
+ * ARM DDI 0405C (September 2008) *
+ * *
***************************************************************************/
#ifdef HAVE_CONFIG_H
#include "config.h"
#include "armv7m.h"
+#define ARRAY_SIZE(x) ((int)(sizeof(x)/sizeof((x)[0])))
+
#if 0
#define _DEBUG_INSTRUCTION_EXECUTION_
"Thread", "Thread (User)", "Handler",
};
-char* armv7m_exception_strings[] =
-{
- "", "Reset", "NMI", "HardFault", "MemManage", "BusFault", "UsageFault", "RESERVED", "RESERVED", "RESERVED", "RESERVED",
- "SVCall", "DebugMonitor", "RESERVED", "PendSV", "SysTick"
-};
-
-char* armv7m_core_reg_list[] =
+static char *armv7m_exception_strings[] =
{
- /* Registers accessed through core debug */
- "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7", "r8", "r9", "r10", "r11", "r12",
- "sp", "lr", "pc",
- "xPSR", "msp", "psp",
- /* Registers accessed through special reg 20 */
- "primask", "basepri", "faultmask", "control"
+ "", "Reset", "NMI", "HardFault",
+ "MemManage", "BusFault", "UsageFault", "RESERVED",
+ "RESERVED", "RESERVED", "RESERVED", "SVCall",
+ "DebugMonitor", "RESERVED", "PendSV", "SysTick"
};
uint8_t armv7m_gdb_dummy_fp_value[] = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0};
};
#endif
-armv7m_core_reg_t armv7m_core_reg_list_arch_info[] =
-{
- /* CORE_GP are accesible using the core debug registers */
- {0, ARMV7M_REGISTER_CORE_GP, ARMV7M_MODE_ANY, NULL, NULL},
- {1, ARMV7M_REGISTER_CORE_GP, ARMV7M_MODE_ANY, NULL, NULL},
- {2, ARMV7M_REGISTER_CORE_GP, ARMV7M_MODE_ANY, NULL, NULL},
- {3, ARMV7M_REGISTER_CORE_GP, ARMV7M_MODE_ANY, NULL, NULL},
- {4, ARMV7M_REGISTER_CORE_GP, ARMV7M_MODE_ANY, NULL, NULL},
- {5, ARMV7M_REGISTER_CORE_GP, ARMV7M_MODE_ANY, NULL, NULL},
- {6, ARMV7M_REGISTER_CORE_GP, ARMV7M_MODE_ANY, NULL, NULL},
- {7, ARMV7M_REGISTER_CORE_GP, ARMV7M_MODE_ANY, NULL, NULL},
- {8, ARMV7M_REGISTER_CORE_GP, ARMV7M_MODE_ANY, NULL, NULL},
- {9, ARMV7M_REGISTER_CORE_GP, ARMV7M_MODE_ANY, NULL, NULL},
- {10, ARMV7M_REGISTER_CORE_GP, ARMV7M_MODE_ANY, NULL, NULL},
- {11, ARMV7M_REGISTER_CORE_GP, ARMV7M_MODE_ANY, NULL, NULL},
- {12, ARMV7M_REGISTER_CORE_GP, ARMV7M_MODE_ANY, NULL, NULL},
- {13, ARMV7M_REGISTER_CORE_GP, ARMV7M_MODE_ANY, NULL, NULL},
- {14, ARMV7M_REGISTER_CORE_GP, ARMV7M_MODE_ANY, NULL, NULL},
- {15, ARMV7M_REGISTER_CORE_GP, ARMV7M_MODE_ANY, NULL, NULL},
-
- {16, ARMV7M_REGISTER_CORE_GP, ARMV7M_MODE_ANY, NULL, NULL}, /* xPSR */
- {17, ARMV7M_REGISTER_CORE_GP, ARMV7M_MODE_ANY, NULL, NULL}, /* MSP */
- {18, ARMV7M_REGISTER_CORE_GP, ARMV7M_MODE_ANY, NULL, NULL}, /* PSP */
-
- /* CORE_SP are accesible using coreregister 20 */
- {19, ARMV7M_REGISTER_CORE_SP, ARMV7M_MODE_ANY, NULL, NULL}, /* PRIMASK */
- {20, ARMV7M_REGISTER_CORE_SP, ARMV7M_MODE_ANY, NULL, NULL}, /* BASEPRI */
- {21, ARMV7M_REGISTER_CORE_SP, ARMV7M_MODE_ANY, NULL, NULL}, /* FAULTMASK */
- {22, ARMV7M_REGISTER_CORE_SP, ARMV7M_MODE_ANY, NULL, NULL} /* CONTROL */
+/*
+ * These registers are not memory-mapped. The ARMv7-M profile includes
+ * memory mapped registers too, such as for the NVIC (interrupt controller)
+ * and SysTick (timer) modules; those can mostly be treated as peripherals.
+ */
+static const struct {
+ unsigned id;
+ char *name;
+ unsigned bits;
+} armv7m_regs[] = {
+ { ARMV7M_R0, "r0", 32 },
+ { ARMV7M_R1, "r1", 32 },
+ { ARMV7M_R2, "r2", 32 },
+ { ARMV7M_R3, "r3", 32 },
+
+ { ARMV7M_R4, "r4", 32 },
+ { ARMV7M_R5, "r5", 32 },
+ { ARMV7M_R6, "r6", 32 },
+ { ARMV7M_R7, "r7", 32 },
+
+ { ARMV7M_R8, "r8", 32 },
+ { ARMV7M_R9, "r9", 32 },
+ { ARMV7M_R10, "r10", 32 },
+ { ARMV7M_R11, "r11", 32 },
+
+ { ARMV7M_R12, "r12", 32 },
+ { ARMV7M_R13, "sp", 32 },
+ { ARMV7M_R14, "lr", 32 },
+ { ARMV7M_PC, "pc", 32 },
+
+ { ARMV7M_xPSR, "xPSR", 32 },
+ { ARMV7M_MSP, "msp", 32 },
+ { ARMV7M_PSP, "psp", 32 },
+
+ { ARMV7M_PRIMASK, "primask", 1 },
+ { ARMV7M_BASEPRI, "basepri", 8 },
+ { ARMV7M_FAULTMASK, "faultmask", 1 },
+ { ARMV7M_CONTROL, "control", 2 },
};
+#define ARMV7M_NUM_REGS ARRAY_SIZE(armv7m_regs)
+
int armv7m_core_reg_arch_type = -1;
int armv7m_dummy_core_reg_arch_type = -1;
if (armv7m->pre_restore_context)
armv7m->pre_restore_context(target);
- for (i = ARMV7NUMCOREREGS-1; i >= 0; i--)
+ for (i = ARMV7M_NUM_REGS - 1; i >= 0; i--)
{
if (armv7m->core_cache->reg_list[i].dirty)
{
/* get pointers to arch-specific information */
armv7m_common_t *armv7m = target->arch_info;
- if ((num < 0) || (num >= ARMV7NUMCOREREGS))
+ if ((num < 0) || (num >= ARMV7M_NUM_REGS))
return ERROR_INVALID_ARGUMENTS;
armv7m_core_reg = armv7m->core_cache->reg_list[num].arch_info;
/* get pointers to arch-specific information */
armv7m_common_t *armv7m = target->arch_info;
- if ((num < 0) || (num >= ARMV7NUMCOREREGS))
+ if ((num < 0) || (num >= ARMV7M_NUM_REGS))
return ERROR_INVALID_ARGUMENTS;
reg_value = buf_get_u32(armv7m->core_cache->reg_list[num].value, 0, 32);
*reg_list_size = 26;
*reg_list = malloc(sizeof(reg_t*) * (*reg_list_size));
+ /*
+ * GDB register packet format for ARM:
+ * - the first 16 registers are r0..r15
+ * - (obsolete) 8 FPA registers
+ * - (obsolete) FPA status
+ * - CPSR
+ */
for (i = 0; i < 16; i++)
{
(*reg_list)[i] = &armv7m->core_cache->reg_list[i];
enum armv7m_mode core_mode = armv7m->core_mode;
int retval = ERROR_OK;
int i;
- uint32_t context[ARMV7NUMCOREREGS];
+ uint32_t context[ARMV7M_NUM_REGS];
if (armv7m_algorithm_info->common_magic != ARMV7M_COMMON_MAGIC)
{
/* refresh core register cache */
/* Not needed if core register cache is always consistent with target process state */
- for (i = 0; i < ARMV7NUMCOREREGS; i++)
+ for (i = 0; i < ARMV7M_NUM_REGS; i++)
{
if (!armv7m->core_cache->reg_list[i].valid)
armv7m->read_core_reg(target, i);
if (armv7m_algorithm_info->core_mode != ARMV7M_MODE_ANY)
{
LOG_DEBUG("setting core_mode: 0x%2.2x", armv7m_algorithm_info->core_mode);
- buf_set_u32(armv7m->core_cache->reg_list[ARMV7M_CONTROL].value, 0, 1, armv7m_algorithm_info->core_mode);
+ buf_set_u32(armv7m->core_cache->reg_list[ARMV7M_CONTROL].value,
+ 0, 1, armv7m_algorithm_info->core_mode);
armv7m->core_cache->reg_list[ARMV7M_CONTROL].dirty = 1;
armv7m->core_cache->reg_list[ARMV7M_CONTROL].valid = 1;
}
}
}
- for (i = ARMV7NUMCOREREGS-1; i >= 0; i--)
+ for (i = ARMV7M_NUM_REGS - 1; i >= 0; i--)
{
uint32_t regvalue;
regvalue = buf_get_u32(armv7m->core_cache->reg_list[i].value, 0, 32);
if (regvalue != context[i])
{
- LOG_DEBUG("restoring register %s with value 0x%8.8" PRIx32 "", armv7m->core_cache->reg_list[i].name, context[i]);
- buf_set_u32(armv7m->core_cache->reg_list[i].value, 0, 32, context[i]);
+ LOG_DEBUG("restoring register %s with value 0x%8.8" PRIx32,
+ armv7m->core_cache->reg_list[i].name, context[i]);
+ buf_set_u32(armv7m->core_cache->reg_list[i].value,
+ 0, 32, context[i]);
armv7m->core_cache->reg_list[i].valid = 1;
armv7m->core_cache->reg_list[i].dirty = 1;
}
{
/* get pointers to arch-specific information */
armv7m_common_t *armv7m = target->arch_info;
+ uint32_t ctrl, sp;
- LOG_USER("target halted due to %s, current mode: %s %s\nxPSR: 0x%8.8" PRIx32 " pc: 0x%8.8" PRIx32 "",
- Jim_Nvp_value2name_simple( nvp_target_debug_reason,target->debug_reason)->name,
+ ctrl = buf_get_u32(armv7m->core_cache->reg_list[ARMV7M_CONTROL].value, 0, 32);
+ sp = buf_get_u32(armv7m->core_cache->reg_list[ARMV7M_R13].value, 0, 32);
+
+ LOG_USER("target halted due to %s, current mode: %s %s\n"
+ "xPSR: %#8.8" PRIx32 " pc: %#8.8" PRIx32 " %csp: %#8.8" PRIx32,
+ Jim_Nvp_value2name_simple(nvp_target_debug_reason,
+ target->debug_reason)->name,
armv7m_mode_strings[armv7m->core_mode],
armv7m_exception_string(armv7m->exception_number),
buf_get_u32(armv7m->core_cache->reg_list[ARMV7M_xPSR].value, 0, 32),
- buf_get_u32(armv7m->core_cache->reg_list[15].value, 0, 32));
+ buf_get_u32(armv7m->core_cache->reg_list[ARMV7M_PC].value, 0, 32),
+ (ctrl & 0x02) ? 'p' : 'm',
+ sp);
return ERROR_OK;
}
/* get pointers to arch-specific information */
armv7m_common_t *armv7m = target->arch_info;
- int num_regs = ARMV7NUMCOREREGS;
+ int num_regs = ARMV7M_NUM_REGS;
reg_cache_t **cache_p = register_get_last_cache_p(&target->reg_cache);
reg_cache_t *cache = malloc(sizeof(reg_cache_t));
- reg_t *reg_list = malloc(sizeof(reg_t) * num_regs);
- armv7m_core_reg_t *arch_info = malloc(sizeof(armv7m_core_reg_t) * num_regs);
+ reg_t *reg_list = calloc(num_regs, sizeof(reg_t));
+ armv7m_core_reg_t *arch_info = calloc(num_regs, sizeof(armv7m_core_reg_t));
int i;
if (armv7m_core_reg_arch_type == -1)
for (i = 0; i < num_regs; i++)
{
- arch_info[i] = armv7m_core_reg_list_arch_info[i];
+ arch_info[i].num = armv7m_regs[i].id;
arch_info[i].target = target;
arch_info[i].armv7m_common = armv7m;
- reg_list[i].name = armv7m_core_reg_list[i];
- reg_list[i].size = 32;
+ reg_list[i].name = armv7m_regs[i].name;
+ reg_list[i].size = armv7m_regs[i].bits;
reg_list[i].value = calloc(1, 4);
reg_list[i].dirty = 0;
reg_list[i].valid = 0;
return ERROR_OK;
}
-int armv7m_register_commands(struct command_context_s *cmd_ctx)
-{
- command_t *arm_adi_v5_dap_cmd;
-
- arm_adi_v5_dap_cmd = register_command(cmd_ctx, NULL, "dap", NULL, COMMAND_ANY, "cortex dap specific commands");
- register_command(cmd_ctx, arm_adi_v5_dap_cmd, "info", handle_dap_info_command, COMMAND_EXEC, "Displays dap info for ap [num], default currently selected AP");
- register_command(cmd_ctx, arm_adi_v5_dap_cmd, "apsel", handle_dap_apsel_command, COMMAND_EXEC, "Select a different AP [num] (default 0)");
- register_command(cmd_ctx, arm_adi_v5_dap_cmd, "apid", handle_dap_apid_command, COMMAND_EXEC, "Displays id reg from AP [num], default currently selected AP");
- register_command(cmd_ctx, arm_adi_v5_dap_cmd, "baseaddr", handle_dap_baseaddr_command, COMMAND_EXEC, "Displays debug base address from AP [num], default currently selected AP");
- register_command(cmd_ctx, arm_adi_v5_dap_cmd, "memaccess", handle_dap_memaccess_command, COMMAND_EXEC, "set/get number of extra tck for mem-ap memory bus access [0-255]");
-
- return ERROR_OK;
-}
-
int armv7m_checksum_memory(struct target_s *target, uint32_t address, uint32_t count, uint32_t* checksum)
{
working_area_t *crc_algorithm;
reg_param_t reg_params[2];
int retval;
- uint16_t cortex_m3_crc_code[] = {
+ static const uint16_t cortex_m3_crc_code[] = {
0x4602, /* mov r2, r0 */
0xF04F, 0x30FF, /* mov r0, #0xffffffff */
0x460B, /* mov r3, r1 */
int retval;
uint32_t i;
- uint16_t erase_check_code[] =
+ static const uint16_t erase_check_code[] =
{
/* loop: */
- 0xF810, 0x3B01, /* ldrb r3, [r0], #1 */
- 0xEA02, 0x0203, /* and r2, r2, r3 */
+ 0xF810, 0x3B01, /* ldrb r3, [r0], #1 */
+ 0xEA02, 0x0203, /* and r2, r2, r3 */
0x3901, /* subs r1, r1, #1 */
0xD1F9, /* bne loop */
/* end: */
return ERROR_OK;
}
-/********************************************************************************************************************
-* Return the debug ap baseaddress in hexadecimal, no extra output to simplify script processing
-*********************************************************************************************************************/
-int handle_dap_baseaddr_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
+/*
+ * Return the debug ap baseaddress in hexadecimal;
+ * no extra output to simplify script processing
+ */
+static int handle_dap_baseaddr_command(struct command_context_s *cmd_ctx,
+ char *cmd, char **args, int argc)
{
target_t *target = get_current_target(cmd_ctx);
armv7m_common_t *armv7m = target->arch_info;
apsel = swjdp->apsel;
apselsave = swjdp->apsel;
if (argc > 0)
- {
+ {
apsel = strtoul(args[0], NULL, 0);
}
if (apselsave != apsel)
}
-/********************************************************************************************************************
-* Return the debug ap id in hexadecimal, no extra output to simplify script processing
-*********************************************************************************************************************/
-extern int handle_dap_apid_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
+/*
+ * Return the debug ap id in hexadecimal;
+ * no extra output to simplify script processing
+ */
+extern int handle_dap_apid_command(struct command_context_s *cmd_ctx,
+ char *cmd, char **args, int argc)
{
target_t *target = get_current_target(cmd_ctx);
armv7m_common_t *armv7m = target->arch_info;
swjdp_common_t *swjdp = &armv7m->swjdp_info;
- uint32_t apsel, apselsave, apid;
- int retval;
- apsel = swjdp->apsel;
- apselsave = swjdp->apsel;
- if (argc > 0)
- {
- apsel = strtoul(args[0], NULL, 0);
- }
-
- if (apselsave != apsel)
- {
- dap_ap_select(swjdp, apsel);
- }
-
- dap_ap_read_reg_u32(swjdp, 0xFC, &apid);
- retval = swjdp_transaction_endcheck(swjdp);
- command_print(cmd_ctx, "0x%8.8" PRIx32 "", apid);
- if (apselsave != apsel)
- {
- dap_ap_select(swjdp, apselsave);
- }
-
- return retval;
+ return dap_apid_command(cmd_ctx, swjdp, args, argc);
}
-int handle_dap_apsel_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
+static int handle_dap_apsel_command(struct command_context_s *cmd_ctx,
+ char *cmd, char **args, int argc)
{
target_t *target = get_current_target(cmd_ctx);
armv7m_common_t *armv7m = target->arch_info;
swjdp_common_t *swjdp = &armv7m->swjdp_info;
- uint32_t apsel, apid;
- int retval;
- apsel = 0;
- if (argc > 0)
- {
- apsel = strtoul(args[0], NULL, 0);
- }
-
- dap_ap_select(swjdp, apsel);
- dap_ap_read_reg_u32(swjdp, 0xFC, &apid);
- retval = swjdp_transaction_endcheck(swjdp);
- command_print(cmd_ctx, "ap %i selected, identification register 0x%8.8" PRIx32 "", (int)apsel, apid);
-
- return retval;
+ return dap_apsel_command(cmd_ctx, swjdp, args, argc);
}
-int handle_dap_memaccess_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
+static int handle_dap_memaccess_command(struct command_context_s *cmd_ctx,
+ char *cmd, char **args, int argc)
{
target_t *target = get_current_target(cmd_ctx);
armv7m_common_t *armv7m = target->arch_info;
swjdp_common_t *swjdp = &armv7m->swjdp_info;
- uint32_t memaccess_tck;
-
- memaccess_tck = swjdp->memaccess_tck;
- if (argc > 0)
- {
- memaccess_tck = strtoul(args[0], NULL, 0);
- }
- swjdp->memaccess_tck = memaccess_tck;
- command_print(cmd_ctx, "memory bus access delay set to %i tck", (int)(swjdp->memaccess_tck));
-
- return ERROR_OK;
+ return dap_memaccess_command(cmd_ctx, swjdp, args, argc);
}
-int handle_dap_info_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
+
+static int handle_dap_info_command(struct command_context_s *cmd_ctx,
+ char *cmd, char **args, int argc)
{
target_t *target = get_current_target(cmd_ctx);
armv7m_common_t *armv7m = target->arch_info;
swjdp_common_t *swjdp = &armv7m->swjdp_info;
- int retval;
uint32_t apsel;
apsel = swjdp->apsel;
if (argc > 0)
- {
apsel = strtoul(args[0], NULL, 0);
- }
-
- retval = dap_info_command(cmd_ctx, swjdp, apsel);
- return retval;
+ return dap_info_command(cmd_ctx, swjdp, apsel);
}
+int armv7m_register_commands(struct command_context_s *cmd_ctx)
+{
+ command_t *arm_adi_v5_dap_cmd;
+
+ arm_adi_v5_dap_cmd = register_command(cmd_ctx, NULL, "dap",
+ NULL, COMMAND_ANY,
+ "cortex dap specific commands");
+
+ register_command(cmd_ctx, arm_adi_v5_dap_cmd, "info",
+ handle_dap_info_command, COMMAND_EXEC,
+ "Displays dap info for ap [num],"
+ "default currently selected AP");
+ register_command(cmd_ctx, arm_adi_v5_dap_cmd, "apsel",
+ handle_dap_apsel_command, COMMAND_EXEC,
+ "Select a different AP [num] (default 0)");
+ register_command(cmd_ctx, arm_adi_v5_dap_cmd, "apid",
+ handle_dap_apid_command, COMMAND_EXEC,
+ "Displays id reg from AP [num], "
+ "default currently selected AP");
+ register_command(cmd_ctx, arm_adi_v5_dap_cmd, "baseaddr",
+ handle_dap_baseaddr_command, COMMAND_EXEC,
+ "Displays debug base address from AP [num],"
+ "default currently selected AP");
+ register_command(cmd_ctx, arm_adi_v5_dap_cmd, "memaccess",
+ handle_dap_memaccess_command, COMMAND_EXEC,
+ "set/get number of extra tck for mem-ap "
+ "memory bus access [0-255]");
+
+ return ERROR_OK;
+}
Code Review / openocd.git / blobdiff