1 /***************************************************************************
2 * Copyright (C) 2005 by Dominic Rath *
3 * Dominic.Rath@gmx.de *
5 * Copyright (C) 2006 by Magnus Lundin *
8 * Copyright (C) 2008 by Spencer Oliver *
9 * spen@spen-soft.co.uk *
11 * This program is free software; you can redistribute it and/or modify *
12 * it under the terms of the GNU General Public License as published by *
13 * the Free Software Foundation; either version 2 of the License, or *
14 * (at your option) any later version. *
16 * This program is distributed in the hope that it will be useful, *
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of *
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
19 * GNU General Public License for more details. *
21 * You should have received a copy of the GNU General Public License *
22 * along with this program; if not, write to the *
23 * Free Software Foundation, Inc., *
24 * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
27 * Cortex-M3(tm) TRM, ARM DDI 0337E (r1p1) and 0337G (r2p0) *
29 ***************************************************************************/
34 #include "breakpoints.h"
35 #include "cortex_m3.h"
36 #include "target_request.h"
37 #include "target_type.h"
38 #include "arm_disassembler.h"
40 #include "arm_opcodes.h"
41 #include "arm_semihosting.h"
43 /* NOTE: most of this should work fine for the Cortex-M1 and
44 * Cortex-M0 cores too, although they're ARMv6-M not ARMv7-M.
45 * Some differences: M0/M1 doesn't have FBP remapping or the
46 * DWT tracing/profiling support. (So the cycle counter will
47 * not be usable; the other stuff isn't currently used here.)
49 * Although there are some workarounds for errata seen only in r0p0
50 * silicon, such old parts are hard to find and thus not much tested
55 /* forward declarations */
56 static int cortex_m3_set_breakpoint(struct target
*target
, struct breakpoint
*breakpoint
);
57 static int cortex_m3_unset_breakpoint(struct target
*target
, struct breakpoint
*breakpoint
);
58 static void cortex_m3_enable_watchpoints(struct target
*target
);
59 static int cortex_m3_store_core_reg_u32(struct target
*target
,
60 enum armv7m_regtype type
, uint32_t num
, uint32_t value
);
62 static int cortexm3_dap_read_coreregister_u32(struct adiv5_dap
*swjdp
,
63 uint32_t *value
, int regnum
)
68 /* because the DCB_DCRDR is used for the emulated dcc channel
69 * we have to save/restore the DCB_DCRDR when used */
71 retval
= mem_ap_read_u32(swjdp
, DCB_DCRDR
, &dcrdr
);
72 if (retval
!= ERROR_OK
)
75 /* mem_ap_write_u32(swjdp, DCB_DCRSR, regnum); */
76 retval
= dap_setup_accessport(swjdp
, CSW_32BIT
| CSW_ADDRINC_OFF
, DCB_DCRSR
& 0xFFFFFFF0);
77 if (retval
!= ERROR_OK
)
79 retval
= dap_queue_ap_write(swjdp
, AP_REG_BD0
| (DCB_DCRSR
& 0xC), regnum
);
80 if (retval
!= ERROR_OK
)
83 /* mem_ap_read_u32(swjdp, DCB_DCRDR, value); */
84 retval
= dap_setup_accessport(swjdp
, CSW_32BIT
| CSW_ADDRINC_OFF
, DCB_DCRDR
& 0xFFFFFFF0);
85 if (retval
!= ERROR_OK
)
87 retval
= dap_queue_ap_read(swjdp
, AP_REG_BD0
| (DCB_DCRDR
& 0xC), value
);
88 if (retval
!= ERROR_OK
)
91 retval
= dap_run(swjdp
);
92 if (retval
!= ERROR_OK
)
95 /* restore DCB_DCRDR - this needs to be in a seperate
96 * transaction otherwise the emulated DCC channel breaks */
97 if (retval
== ERROR_OK
)
98 retval
= mem_ap_write_atomic_u32(swjdp
, DCB_DCRDR
, dcrdr
);
103 static int cortexm3_dap_write_coreregister_u32(struct adiv5_dap
*swjdp
,
104 uint32_t value
, int regnum
)
109 /* because the DCB_DCRDR is used for the emulated dcc channel
110 * we have to save/restore the DCB_DCRDR when used */
112 retval
= mem_ap_read_u32(swjdp
, DCB_DCRDR
, &dcrdr
);
113 if (retval
!= ERROR_OK
)
116 /* mem_ap_write_u32(swjdp, DCB_DCRDR, core_regs[i]); */
117 retval
= dap_setup_accessport(swjdp
, CSW_32BIT
| CSW_ADDRINC_OFF
, DCB_DCRDR
& 0xFFFFFFF0);
118 if (retval
!= ERROR_OK
)
120 retval
= dap_queue_ap_write(swjdp
, AP_REG_BD0
| (DCB_DCRDR
& 0xC), value
);
123 /* mem_ap_write_u32(swjdp, DCB_DCRSR, i | DCRSR_WnR); */
124 retval
= dap_setup_accessport(swjdp
, CSW_32BIT
| CSW_ADDRINC_OFF
, DCB_DCRSR
& 0xFFFFFFF0);
125 if (retval
!= ERROR_OK
)
127 retval
= dap_queue_ap_write(swjdp
, AP_REG_BD0
| (DCB_DCRSR
& 0xC), regnum
| DCRSR_WnR
);
130 retval
= dap_run(swjdp
);
132 /* restore DCB_DCRDR - this needs to be in a seperate
133 * transaction otherwise the emulated DCC channel breaks */
134 if (retval
== ERROR_OK
)
135 retval
= mem_ap_write_atomic_u32(swjdp
, DCB_DCRDR
, dcrdr
);
140 static int cortex_m3_write_debug_halt_mask(struct target
*target
,
141 uint32_t mask_on
, uint32_t mask_off
)
143 struct cortex_m3_common
*cortex_m3
= target_to_cm3(target
);
144 struct adiv5_dap
*swjdp
= &cortex_m3
->armv7m
.dap
;
146 /* mask off status bits */
147 cortex_m3
->dcb_dhcsr
&= ~((0xFFFF << 16) | mask_off
);
148 /* create new register mask */
149 cortex_m3
->dcb_dhcsr
|= DBGKEY
| C_DEBUGEN
| mask_on
;
151 return mem_ap_write_atomic_u32(swjdp
, DCB_DHCSR
, cortex_m3
->dcb_dhcsr
);
154 static int cortex_m3_clear_halt(struct target
*target
)
156 struct cortex_m3_common
*cortex_m3
= target_to_cm3(target
);
157 struct adiv5_dap
*swjdp
= &cortex_m3
->armv7m
.dap
;
159 /* clear step if any */
160 cortex_m3_write_debug_halt_mask(target
, C_HALT
, C_STEP
);
162 /* Read Debug Fault Status Register */
163 mem_ap_read_atomic_u32(swjdp
, NVIC_DFSR
, &cortex_m3
->nvic_dfsr
);
165 /* Clear Debug Fault Status */
166 mem_ap_write_atomic_u32(swjdp
, NVIC_DFSR
, cortex_m3
->nvic_dfsr
);
167 LOG_DEBUG(" NVIC_DFSR 0x%" PRIx32
"", cortex_m3
->nvic_dfsr
);
172 static int cortex_m3_single_step_core(struct target
*target
)
174 struct cortex_m3_common
*cortex_m3
= target_to_cm3(target
);
175 struct adiv5_dap
*swjdp
= &cortex_m3
->armv7m
.dap
;
178 /* backup dhcsr reg */
179 dhcsr_save
= cortex_m3
->dcb_dhcsr
;
181 /* Mask interrupts before clearing halt, if done already. This avoids
182 * Erratum 377497 (fixed in r1p0) where setting MASKINTS while clearing
183 * HALT can put the core into an unknown state.
185 if (!(cortex_m3
->dcb_dhcsr
& C_MASKINTS
))
186 mem_ap_write_atomic_u32(swjdp
, DCB_DHCSR
,
187 DBGKEY
| C_MASKINTS
| C_HALT
| C_DEBUGEN
);
188 mem_ap_write_atomic_u32(swjdp
, DCB_DHCSR
,
189 DBGKEY
| C_MASKINTS
| C_STEP
| C_DEBUGEN
);
192 /* restore dhcsr reg */
193 cortex_m3
->dcb_dhcsr
= dhcsr_save
;
194 cortex_m3_clear_halt(target
);
199 static int cortex_m3_endreset_event(struct target
*target
)
204 struct cortex_m3_common
*cortex_m3
= target_to_cm3(target
);
205 struct armv7m_common
*armv7m
= &cortex_m3
->armv7m
;
206 struct adiv5_dap
*swjdp
= &cortex_m3
->armv7m
.dap
;
207 struct cortex_m3_fp_comparator
*fp_list
= cortex_m3
->fp_comparator_list
;
208 struct cortex_m3_dwt_comparator
*dwt_list
= cortex_m3
->dwt_comparator_list
;
210 /* REVISIT The four debug monitor bits are currently ignored... */
211 mem_ap_read_atomic_u32(swjdp
, DCB_DEMCR
, &dcb_demcr
);
212 LOG_DEBUG("DCB_DEMCR = 0x%8.8" PRIx32
"",dcb_demcr
);
214 /* this register is used for emulated dcc channel */
215 mem_ap_write_u32(swjdp
, DCB_DCRDR
, 0);
217 /* Enable debug requests */
218 mem_ap_read_atomic_u32(swjdp
, DCB_DHCSR
, &cortex_m3
->dcb_dhcsr
);
219 if (!(cortex_m3
->dcb_dhcsr
& C_DEBUGEN
))
220 mem_ap_write_u32(swjdp
, DCB_DHCSR
, DBGKEY
| C_DEBUGEN
);
222 /* clear any interrupt masking */
223 cortex_m3_write_debug_halt_mask(target
, 0, C_MASKINTS
);
225 /* Enable features controlled by ITM and DWT blocks, and catch only
226 * the vectors we were told to pay attention to.
228 * Target firmware is responsible for all fault handling policy
229 * choices *EXCEPT* explicitly scripted overrides like "vector_catch"
230 * or manual updates to the NVIC SHCSR and CCR registers.
232 mem_ap_write_u32(swjdp
, DCB_DEMCR
, TRCENA
| armv7m
->demcr
);
234 /* Paranoia: evidently some (early?) chips don't preserve all the
235 * debug state (including FBP, DWT, etc) across reset...
239 target_write_u32(target
, FP_CTRL
, 3);
240 cortex_m3
->fpb_enabled
= 1;
242 /* Restore FPB registers */
243 for (i
= 0; i
< cortex_m3
->fp_num_code
+ cortex_m3
->fp_num_lit
; i
++)
245 target_write_u32(target
, fp_list
[i
].fpcr_address
, fp_list
[i
].fpcr_value
);
248 /* Restore DWT registers */
249 for (i
= 0; i
< cortex_m3
->dwt_num_comp
; i
++)
251 target_write_u32(target
, dwt_list
[i
].dwt_comparator_address
+ 0,
253 target_write_u32(target
, dwt_list
[i
].dwt_comparator_address
+ 4,
255 target_write_u32(target
, dwt_list
[i
].dwt_comparator_address
+ 8,
256 dwt_list
[i
].function
);
258 retval
= dap_run(swjdp
);
259 if (retval
!= ERROR_OK
)
262 register_cache_invalidate(cortex_m3
->armv7m
.core_cache
);
264 /* make sure we have latest dhcsr flags */
265 mem_ap_read_atomic_u32(swjdp
, DCB_DHCSR
, &cortex_m3
->dcb_dhcsr
);
270 static int cortex_m3_examine_debug_reason(struct target
*target
)
272 struct cortex_m3_common
*cortex_m3
= target_to_cm3(target
);
274 /* THIS IS NOT GOOD, TODO - better logic for detection of debug state reason */
275 /* only check the debug reason if we don't know it already */
277 if ((target
->debug_reason
!= DBG_REASON_DBGRQ
)
278 && (target
->debug_reason
!= DBG_REASON_SINGLESTEP
))
280 if (cortex_m3
->nvic_dfsr
& DFSR_BKPT
)
282 target
->debug_reason
= DBG_REASON_BREAKPOINT
;
283 if (cortex_m3
->nvic_dfsr
& DFSR_DWTTRAP
)
284 target
->debug_reason
= DBG_REASON_WPTANDBKPT
;
286 else if (cortex_m3
->nvic_dfsr
& DFSR_DWTTRAP
)
287 target
->debug_reason
= DBG_REASON_WATCHPOINT
;
288 else if (cortex_m3
->nvic_dfsr
& DFSR_VCATCH
)
289 target
->debug_reason
= DBG_REASON_BREAKPOINT
;
290 else /* EXTERNAL, HALTED */
291 target
->debug_reason
= DBG_REASON_UNDEFINED
;
297 static int cortex_m3_examine_exception_reason(struct target
*target
)
299 uint32_t shcsr
, except_sr
, cfsr
= -1, except_ar
= -1;
300 struct armv7m_common
*armv7m
= target_to_armv7m(target
);
301 struct adiv5_dap
*swjdp
= &armv7m
->dap
;
304 retval
= mem_ap_read_u32(swjdp
, NVIC_SHCSR
, &shcsr
);
305 if (retval
!= ERROR_OK
)
307 switch (armv7m
->exception_number
)
311 case 3: /* Hard Fault */
312 retval
= mem_ap_read_atomic_u32(swjdp
, NVIC_HFSR
, &except_sr
);
313 if (retval
!= ERROR_OK
)
315 if (except_sr
& 0x40000000)
317 retval
= mem_ap_read_u32(swjdp
, NVIC_CFSR
, &cfsr
);
318 if (retval
!= ERROR_OK
)
322 case 4: /* Memory Management */
323 retval
= mem_ap_read_u32(swjdp
, NVIC_CFSR
, &except_sr
);
324 if (retval
!= ERROR_OK
)
326 retval
= mem_ap_read_u32(swjdp
, NVIC_MMFAR
, &except_ar
);
327 if (retval
!= ERROR_OK
)
330 case 5: /* Bus Fault */
331 retval
= mem_ap_read_u32(swjdp
, NVIC_CFSR
, &except_sr
);
332 if (retval
!= ERROR_OK
)
334 retval
= mem_ap_read_u32(swjdp
, NVIC_BFAR
, &except_ar
);
335 if (retval
!= ERROR_OK
)
338 case 6: /* Usage Fault */
339 retval
= mem_ap_read_u32(swjdp
, NVIC_CFSR
, &except_sr
);
340 if (retval
!= ERROR_OK
)
343 case 11: /* SVCall */
345 case 12: /* Debug Monitor */
346 retval
= mem_ap_read_u32(swjdp
, NVIC_DFSR
, &except_sr
);
347 if (retval
!= ERROR_OK
)
350 case 14: /* PendSV */
352 case 15: /* SysTick */
358 retval
= dap_run(swjdp
);
359 if (retval
== ERROR_OK
)
360 LOG_DEBUG("%s SHCSR 0x%" PRIx32
", SR 0x%" PRIx32
361 ", CFSR 0x%" PRIx32
", AR 0x%" PRIx32
,
362 armv7m_exception_string(armv7m
->exception_number
),
363 shcsr
, except_sr
, cfsr
, except_ar
);
367 /* PSP is used in some thread modes */
368 static const int armv7m_psp_reg_map
[17] = {
369 ARMV7M_R0
, ARMV7M_R1
, ARMV7M_R2
, ARMV7M_R3
,
370 ARMV7M_R4
, ARMV7M_R5
, ARMV7M_R6
, ARMV7M_R7
,
371 ARMV7M_R8
, ARMV7M_R9
, ARMV7M_R10
, ARMV7M_R11
,
372 ARMV7M_R12
, ARMV7M_PSP
, ARMV7M_R14
, ARMV7M_PC
,
376 /* MSP is used in handler and some thread modes */
377 static const int armv7m_msp_reg_map
[17] = {
378 ARMV7M_R0
, ARMV7M_R1
, ARMV7M_R2
, ARMV7M_R3
,
379 ARMV7M_R4
, ARMV7M_R5
, ARMV7M_R6
, ARMV7M_R7
,
380 ARMV7M_R8
, ARMV7M_R9
, ARMV7M_R10
, ARMV7M_R11
,
381 ARMV7M_R12
, ARMV7M_MSP
, ARMV7M_R14
, ARMV7M_PC
,
385 static int cortex_m3_debug_entry(struct target
*target
)
390 struct cortex_m3_common
*cortex_m3
= target_to_cm3(target
);
391 struct armv7m_common
*armv7m
= &cortex_m3
->armv7m
;
392 struct arm
*arm
= &armv7m
->arm
;
393 struct adiv5_dap
*swjdp
= &armv7m
->dap
;
398 cortex_m3_clear_halt(target
);
399 mem_ap_read_atomic_u32(swjdp
, DCB_DHCSR
, &cortex_m3
->dcb_dhcsr
);
401 if ((retval
= armv7m
->examine_debug_reason(target
)) != ERROR_OK
)
404 /* Examine target state and mode */
405 /* First load register acessible through core debug port*/
406 int num_regs
= armv7m
->core_cache
->num_regs
;
408 for (i
= 0; i
< num_regs
; i
++)
410 if (!armv7m
->core_cache
->reg_list
[i
].valid
)
411 armv7m
->read_core_reg(target
, i
);
414 r
= armv7m
->core_cache
->reg_list
+ ARMV7M_xPSR
;
415 xPSR
= buf_get_u32(r
->value
, 0, 32);
417 #ifdef ARMV7_GDB_HACKS
418 /* FIXME this breaks on scan chains with more than one Cortex-M3.
419 * Instead, each CM3 should have its own dummy value...
421 /* copy real xpsr reg for gdb, setting thumb bit */
422 buf_set_u32(armv7m_gdb_dummy_cpsr_value
, 0, 32, xPSR
);
423 buf_set_u32(armv7m_gdb_dummy_cpsr_value
, 5, 1, 1);
424 armv7m_gdb_dummy_cpsr_reg
.valid
= r
->valid
;
425 armv7m_gdb_dummy_cpsr_reg
.dirty
= r
->dirty
;
428 /* For IT instructions xPSR must be reloaded on resume and clear on debug exec */
432 cortex_m3_store_core_reg_u32(target
, ARMV7M_REGISTER_CORE_GP
, 16, xPSR
&~ 0xff);
435 /* Are we in an exception handler */
438 armv7m
->core_mode
= ARMV7M_MODE_HANDLER
;
439 armv7m
->exception_number
= (xPSR
& 0x1FF);
441 arm
->core_mode
= ARM_MODE_HANDLER
;
442 arm
->map
= armv7m_msp_reg_map
;
446 unsigned control
= buf_get_u32(armv7m
->core_cache
447 ->reg_list
[ARMV7M_CONTROL
].value
, 0, 2);
449 /* is this thread privileged? */
450 armv7m
->core_mode
= control
& 1;
451 arm
->core_mode
= armv7m
->core_mode
452 ? ARM_MODE_USER_THREAD
455 /* which stack is it using? */
457 arm
->map
= armv7m_psp_reg_map
;
459 arm
->map
= armv7m_msp_reg_map
;
461 armv7m
->exception_number
= 0;
464 if (armv7m
->exception_number
)
466 cortex_m3_examine_exception_reason(target
);
469 LOG_DEBUG("entered debug state in core mode: %s at PC 0x%" PRIx32
", target->state: %s",
470 armv7m_mode_strings
[armv7m
->core_mode
],
471 *(uint32_t*)(arm
->pc
->value
),
472 target_state_name(target
));
474 if (armv7m
->post_debug_entry
)
476 retval
= armv7m
->post_debug_entry(target
);
477 if (retval
!= ERROR_OK
)
484 static int cortex_m3_poll(struct target
*target
)
487 enum target_state prev_target_state
= target
->state
;
488 struct cortex_m3_common
*cortex_m3
= target_to_cm3(target
);
489 struct adiv5_dap
*swjdp
= &cortex_m3
->armv7m
.dap
;
491 /* Read from Debug Halting Control and Status Register */
492 retval
= mem_ap_read_atomic_u32(swjdp
, DCB_DHCSR
, &cortex_m3
->dcb_dhcsr
);
493 if (retval
!= ERROR_OK
)
495 target
->state
= TARGET_UNKNOWN
;
499 /* Recover from lockup. See ARMv7-M architecture spec,
500 * section B1.5.15 "Unrecoverable exception cases".
502 * REVISIT Is there a better way to report and handle this?
504 if (cortex_m3
->dcb_dhcsr
& S_LOCKUP
) {
505 LOG_WARNING("%s -- clearing lockup after double fault",
506 target_name(target
));
507 cortex_m3_write_debug_halt_mask(target
, C_HALT
, 0);
508 target
->debug_reason
= DBG_REASON_DBGRQ
;
510 /* refresh status bits */
511 mem_ap_read_atomic_u32(swjdp
, DCB_DHCSR
, &cortex_m3
->dcb_dhcsr
);
514 if (cortex_m3
->dcb_dhcsr
& S_RESET_ST
)
516 /* check if still in reset */
517 mem_ap_read_atomic_u32(swjdp
, DCB_DHCSR
, &cortex_m3
->dcb_dhcsr
);
519 if (cortex_m3
->dcb_dhcsr
& S_RESET_ST
)
521 target
->state
= TARGET_RESET
;
526 if (target
->state
== TARGET_RESET
)
528 /* Cannot switch context while running so endreset is
529 * called with target->state == TARGET_RESET
531 LOG_DEBUG("Exit from reset with dcb_dhcsr 0x%" PRIx32
,
532 cortex_m3
->dcb_dhcsr
);
533 cortex_m3_endreset_event(target
);
534 target
->state
= TARGET_RUNNING
;
535 prev_target_state
= TARGET_RUNNING
;
538 if (cortex_m3
->dcb_dhcsr
& S_HALT
)
540 target
->state
= TARGET_HALTED
;
542 if ((prev_target_state
== TARGET_RUNNING
) || (prev_target_state
== TARGET_RESET
))
544 if ((retval
= cortex_m3_debug_entry(target
)) != ERROR_OK
)
547 if (arm_semihosting(target
, &retval
) != 0)
550 target_call_event_callbacks(target
, TARGET_EVENT_HALTED
);
552 if (prev_target_state
== TARGET_DEBUG_RUNNING
)
555 if ((retval
= cortex_m3_debug_entry(target
)) != ERROR_OK
)
558 target_call_event_callbacks(target
, TARGET_EVENT_DEBUG_HALTED
);
562 /* REVISIT when S_SLEEP is set, it's in a Sleep or DeepSleep state.
563 * How best to model low power modes?
566 if (target
->state
== TARGET_UNKNOWN
)
568 /* check if processor is retiring instructions */
569 if (cortex_m3
->dcb_dhcsr
& S_RETIRE_ST
)
571 target
->state
= TARGET_RUNNING
;
579 static int cortex_m3_halt(struct target
*target
)
581 LOG_DEBUG("target->state: %s",
582 target_state_name(target
));
584 if (target
->state
== TARGET_HALTED
)
586 LOG_DEBUG("target was already halted");
590 if (target
->state
== TARGET_UNKNOWN
)
592 LOG_WARNING("target was in unknown state when halt was requested");
595 if (target
->state
== TARGET_RESET
)
597 if ((jtag_get_reset_config() & RESET_SRST_PULLS_TRST
) && jtag_get_srst())
599 LOG_ERROR("can't request a halt while in reset if nSRST pulls nTRST");
600 return ERROR_TARGET_FAILURE
;
604 /* we came here in a reset_halt or reset_init sequence
605 * debug entry was already prepared in cortex_m3_prepare_reset_halt()
607 target
->debug_reason
= DBG_REASON_DBGRQ
;
613 /* Write to Debug Halting Control and Status Register */
614 cortex_m3_write_debug_halt_mask(target
, C_HALT
, 0);
616 target
->debug_reason
= DBG_REASON_DBGRQ
;
621 static int cortex_m3_soft_reset_halt(struct target
*target
)
623 struct cortex_m3_common
*cortex_m3
= target_to_cm3(target
);
624 struct adiv5_dap
*swjdp
= &cortex_m3
->armv7m
.dap
;
625 uint32_t dcb_dhcsr
= 0;
626 int retval
, timeout
= 0;
628 /* Enter debug state on reset; restore DEMCR in endreset_event() */
629 mem_ap_write_u32(swjdp
, DCB_DEMCR
,
630 TRCENA
| VC_HARDERR
| VC_BUSERR
| VC_CORERESET
);
632 /* Request a core-only reset */
633 mem_ap_write_atomic_u32(swjdp
, NVIC_AIRCR
,
634 AIRCR_VECTKEY
| AIRCR_VECTRESET
);
635 target
->state
= TARGET_RESET
;
637 /* registers are now invalid */
638 register_cache_invalidate(cortex_m3
->armv7m
.core_cache
);
640 while (timeout
< 100)
642 retval
= mem_ap_read_atomic_u32(swjdp
, DCB_DHCSR
, &dcb_dhcsr
);
643 if (retval
== ERROR_OK
)
645 mem_ap_read_atomic_u32(swjdp
, NVIC_DFSR
,
646 &cortex_m3
->nvic_dfsr
);
647 if ((dcb_dhcsr
& S_HALT
)
648 && (cortex_m3
->nvic_dfsr
& DFSR_VCATCH
))
650 LOG_DEBUG("system reset-halted, DHCSR 0x%08x, "
652 (unsigned) dcb_dhcsr
,
653 (unsigned) cortex_m3
->nvic_dfsr
);
654 cortex_m3_poll(target
);
655 /* FIXME restore user's vector catch config */
659 LOG_DEBUG("waiting for system reset-halt, "
660 "DHCSR 0x%08x, %d ms",
661 (unsigned) dcb_dhcsr
, timeout
);
670 static void cortex_m3_enable_breakpoints(struct target
*target
)
672 struct breakpoint
*breakpoint
= target
->breakpoints
;
674 /* set any pending breakpoints */
677 if (!breakpoint
->set
)
678 cortex_m3_set_breakpoint(target
, breakpoint
);
679 breakpoint
= breakpoint
->next
;
683 static int cortex_m3_resume(struct target
*target
, int current
,
684 uint32_t address
, int handle_breakpoints
, int debug_execution
)
686 struct armv7m_common
*armv7m
= target_to_armv7m(target
);
687 struct breakpoint
*breakpoint
= NULL
;
691 if (target
->state
!= TARGET_HALTED
)
693 LOG_WARNING("target not halted");
694 return ERROR_TARGET_NOT_HALTED
;
697 if (!debug_execution
)
699 target_free_all_working_areas(target
);
700 cortex_m3_enable_breakpoints(target
);
701 cortex_m3_enable_watchpoints(target
);
706 r
= armv7m
->core_cache
->reg_list
+ ARMV7M_PRIMASK
;
708 /* Disable interrupts */
709 /* We disable interrupts in the PRIMASK register instead of
710 * masking with C_MASKINTS. This is probably the same issue
711 * as Cortex-M3 Erratum 377493 (fixed in r1p0): C_MASKINTS
712 * in parallel with disabled interrupts can cause local faults
715 * REVISIT this clearly breaks non-debug execution, since the
716 * PRIMASK register state isn't saved/restored... workaround
717 * by never resuming app code after debug execution.
719 buf_set_u32(r
->value
, 0, 1, 1);
723 /* Make sure we are in Thumb mode */
724 r
= armv7m
->core_cache
->reg_list
+ ARMV7M_xPSR
;
725 buf_set_u32(r
->value
, 24, 1, 1);
730 /* current = 1: continue on current pc, otherwise continue at <address> */
734 buf_set_u32(r
->value
, 0, 32, address
);
739 /* if we halted last time due to a bkpt instruction
740 * then we have to manually step over it, otherwise
741 * the core will break again */
743 if (!breakpoint_find(target
, buf_get_u32(r
->value
, 0, 32))
746 armv7m_maybe_skip_bkpt_inst(target
, NULL
);
749 resume_pc
= buf_get_u32(r
->value
, 0, 32);
751 armv7m_restore_context(target
);
753 /* the front-end may request us not to handle breakpoints */
754 if (handle_breakpoints
)
756 /* Single step past breakpoint at current address */
757 if ((breakpoint
= breakpoint_find(target
, resume_pc
)))
759 LOG_DEBUG("unset breakpoint at 0x%8.8" PRIx32
" (ID: %d)",
761 breakpoint
->unique_id
);
762 cortex_m3_unset_breakpoint(target
, breakpoint
);
763 cortex_m3_single_step_core(target
);
764 cortex_m3_set_breakpoint(target
, breakpoint
);
769 cortex_m3_write_debug_halt_mask(target
, 0, C_HALT
);
771 target
->debug_reason
= DBG_REASON_NOTHALTED
;
773 /* registers are now invalid */
774 register_cache_invalidate(armv7m
->core_cache
);
776 if (!debug_execution
)
778 target
->state
= TARGET_RUNNING
;
779 target_call_event_callbacks(target
, TARGET_EVENT_RESUMED
);
780 LOG_DEBUG("target resumed at 0x%" PRIx32
"", resume_pc
);
784 target
->state
= TARGET_DEBUG_RUNNING
;
785 target_call_event_callbacks(target
, TARGET_EVENT_DEBUG_RESUMED
);
786 LOG_DEBUG("target debug resumed at 0x%" PRIx32
"", resume_pc
);
792 /* int irqstepcount = 0; */
793 static int cortex_m3_step(struct target
*target
, int current
,
794 uint32_t address
, int handle_breakpoints
)
796 struct cortex_m3_common
*cortex_m3
= target_to_cm3(target
);
797 struct armv7m_common
*armv7m
= &cortex_m3
->armv7m
;
798 struct adiv5_dap
*swjdp
= &armv7m
->dap
;
799 struct breakpoint
*breakpoint
= NULL
;
800 struct reg
*pc
= armv7m
->arm
.pc
;
801 bool bkpt_inst_found
= false;
803 if (target
->state
!= TARGET_HALTED
)
805 LOG_WARNING("target not halted");
806 return ERROR_TARGET_NOT_HALTED
;
809 /* current = 1: continue on current pc, otherwise continue at <address> */
811 buf_set_u32(pc
->value
, 0, 32, address
);
813 /* the front-end may request us not to handle breakpoints */
814 if (handle_breakpoints
) {
815 breakpoint
= breakpoint_find(target
,
816 buf_get_u32(pc
->value
, 0, 32));
818 cortex_m3_unset_breakpoint(target
, breakpoint
);
821 armv7m_maybe_skip_bkpt_inst(target
, &bkpt_inst_found
);
823 target
->debug_reason
= DBG_REASON_SINGLESTEP
;
825 armv7m_restore_context(target
);
827 target_call_event_callbacks(target
, TARGET_EVENT_RESUMED
);
829 /* if no bkpt instruction is found at pc then we can perform
830 * a normal step, otherwise we have to manually step over the bkpt
831 * instruction - as such simulate a step */
832 if (bkpt_inst_found
== false)
834 /* set step and clear halt */
835 cortex_m3_write_debug_halt_mask(target
, C_STEP
, C_HALT
);
838 mem_ap_read_atomic_u32(swjdp
, DCB_DHCSR
, &cortex_m3
->dcb_dhcsr
);
840 /* registers are now invalid */
841 register_cache_invalidate(cortex_m3
->armv7m
.core_cache
);
844 cortex_m3_set_breakpoint(target
, breakpoint
);
846 LOG_DEBUG("target stepped dcb_dhcsr = 0x%" PRIx32
847 " nvic_icsr = 0x%" PRIx32
,
848 cortex_m3
->dcb_dhcsr
, cortex_m3
->nvic_icsr
);
851 retval
= cortex_m3_debug_entry(target
);
852 if (retval
!= ERROR_OK
)
854 target_call_event_callbacks(target
, TARGET_EVENT_HALTED
);
856 LOG_DEBUG("target stepped dcb_dhcsr = 0x%" PRIx32
857 " nvic_icsr = 0x%" PRIx32
,
858 cortex_m3
->dcb_dhcsr
, cortex_m3
->nvic_icsr
);
863 static int cortex_m3_assert_reset(struct target
*target
)
865 struct cortex_m3_common
*cortex_m3
= target_to_cm3(target
);
866 struct adiv5_dap
*swjdp
= &cortex_m3
->armv7m
.dap
;
869 LOG_DEBUG("target->state: %s",
870 target_state_name(target
));
872 enum reset_types jtag_reset_config
= jtag_get_reset_config();
875 * We can reset Cortex-M3 targets using just the NVIC without
876 * requiring SRST, getting a SoC reset (or a core-only reset)
877 * instead of a system reset.
879 if (!(jtag_reset_config
& RESET_HAS_SRST
))
882 /* Enable debug requests */
883 mem_ap_read_atomic_u32(swjdp
, DCB_DHCSR
, &cortex_m3
->dcb_dhcsr
);
884 if (!(cortex_m3
->dcb_dhcsr
& C_DEBUGEN
))
885 mem_ap_write_u32(swjdp
, DCB_DHCSR
, DBGKEY
| C_DEBUGEN
);
887 mem_ap_write_u32(swjdp
, DCB_DCRDR
, 0);
889 if (!target
->reset_halt
)
891 /* Set/Clear C_MASKINTS in a separate operation */
892 if (cortex_m3
->dcb_dhcsr
& C_MASKINTS
)
893 mem_ap_write_atomic_u32(swjdp
, DCB_DHCSR
,
894 DBGKEY
| C_DEBUGEN
| C_HALT
);
896 /* clear any debug flags before resuming */
897 cortex_m3_clear_halt(target
);
899 /* clear C_HALT in dhcsr reg */
900 cortex_m3_write_debug_halt_mask(target
, 0, C_HALT
);
904 /* Halt in debug on reset; endreset_event() restores DEMCR.
906 * REVISIT catching BUSERR presumably helps to defend against
907 * bad vector table entries. Should this include MMERR or
910 mem_ap_write_atomic_u32(swjdp
, DCB_DEMCR
,
911 TRCENA
| VC_HARDERR
| VC_BUSERR
| VC_CORERESET
);
915 * When nRST is asserted on most Stellaris devices, it clears some of
916 * the debug state. The ARMv7M and Cortex-M3 TRMs say that's wrong;
917 * and OpenOCD depends on those TRMs. So we won't use SRST on those
918 * chips. (Only power-on reset should affect debug state, beyond a
919 * few specified bits; not the chip's nRST input, wired to SRST.)
921 * REVISIT current errata specs don't seem to cover this issue.
922 * Do we have more details than this email?
923 * https://lists.berlios.de/pipermail
924 * /openocd-development/2008-August/003065.html
926 if (strcmp(target
->variant
, "lm3s") == 0)
928 /* Check for silicon revisions with the issue. */
931 if (target_read_u32(target
, 0x400fe000, &did0
) == ERROR_OK
)
933 switch ((did0
>> 16) & 0xff)
936 /* all Sandstorm suffer issue */
942 /* Fury and DustDevil rev A have
943 * this nRST problem. It should
944 * be fixed in rev B silicon.
946 if (((did0
>> 8) & 0xff) == 0)
950 /* Tempest should be fine. */
958 /* default to asserting srst */
959 if (jtag_reset_config
& RESET_SRST_PULLS_TRST
)
961 jtag_add_reset(1, 1);
965 jtag_add_reset(0, 1);
970 /* Use a standard Cortex-M3 software reset mechanism.
971 * SYSRESETREQ will reset SoC peripherals outside the
972 * core, like watchdog timers, if the SoC wires it up
973 * correctly. Else VECRESET can reset just the core.
975 mem_ap_write_atomic_u32(swjdp
, NVIC_AIRCR
,
976 AIRCR_VECTKEY
| AIRCR_SYSRESETREQ
);
977 LOG_DEBUG("Using Cortex-M3 SYSRESETREQ");
980 /* I do not know why this is necessary, but it
981 * fixes strange effects (step/resume cause NMI
982 * after reset) on LM3S6918 -- Michael Schwingen
985 mem_ap_read_atomic_u32(swjdp
, NVIC_AIRCR
, &tmp
);
989 target
->state
= TARGET_RESET
;
990 jtag_add_sleep(50000);
992 register_cache_invalidate(cortex_m3
->armv7m
.core_cache
);
994 if (target
->reset_halt
)
997 if ((retval
= target_halt(target
)) != ERROR_OK
)
1004 static int cortex_m3_deassert_reset(struct target
*target
)
1006 LOG_DEBUG("target->state: %s",
1007 target_state_name(target
));
1009 /* deassert reset lines */
1010 jtag_add_reset(0, 0);
1016 cortex_m3_set_breakpoint(struct target
*target
, struct breakpoint
*breakpoint
)
1021 struct cortex_m3_common
*cortex_m3
= target_to_cm3(target
);
1022 struct cortex_m3_fp_comparator
*comparator_list
= cortex_m3
->fp_comparator_list
;
1024 if (breakpoint
->set
)
1026 LOG_WARNING("breakpoint (BPID: %d) already set", breakpoint
->unique_id
);
1030 if (cortex_m3
->auto_bp_type
)
1032 breakpoint
->type
= (breakpoint
->address
< 0x20000000) ? BKPT_HARD
: BKPT_SOFT
;
1035 if (breakpoint
->type
== BKPT_HARD
)
1037 while (comparator_list
[fp_num
].used
&& (fp_num
< cortex_m3
->fp_num_code
))
1039 if (fp_num
>= cortex_m3
->fp_num_code
)
1041 LOG_ERROR("Can not find free FPB Comparator!");
1044 breakpoint
->set
= fp_num
+ 1;
1045 hilo
= (breakpoint
->address
& 0x2) ? FPCR_REPLACE_BKPT_HIGH
: FPCR_REPLACE_BKPT_LOW
;
1046 comparator_list
[fp_num
].used
= 1;
1047 comparator_list
[fp_num
].fpcr_value
= (breakpoint
->address
& 0x1FFFFFFC) | hilo
| 1;
1048 target_write_u32(target
, comparator_list
[fp_num
].fpcr_address
, comparator_list
[fp_num
].fpcr_value
);
1049 LOG_DEBUG("fpc_num %i fpcr_value 0x%" PRIx32
"", fp_num
, comparator_list
[fp_num
].fpcr_value
);
1050 if (!cortex_m3
->fpb_enabled
)
1052 LOG_DEBUG("FPB wasn't enabled, do it now");
1053 target_write_u32(target
, FP_CTRL
, 3);
1056 else if (breakpoint
->type
== BKPT_SOFT
)
1060 /* NOTE: on ARMv6-M and ARMv7-M, BKPT(0xab) is used for
1061 * semihosting; don't use that. Otherwise the BKPT
1062 * parameter is arbitrary.
1064 buf_set_u32(code
, 0, 32, ARMV5_T_BKPT(0x11));
1065 retval
= target_read_memory(target
,
1066 breakpoint
->address
& 0xFFFFFFFE,
1067 breakpoint
->length
, 1,
1068 breakpoint
->orig_instr
);
1069 if (retval
!= ERROR_OK
)
1071 retval
= target_write_memory(target
,
1072 breakpoint
->address
& 0xFFFFFFFE,
1073 breakpoint
->length
, 1,
1075 if (retval
!= ERROR_OK
)
1077 breakpoint
->set
= true;
1080 LOG_DEBUG("BPID: %d, Type: %d, Address: 0x%08" PRIx32
" Length: %d (set=%d)",
1081 breakpoint
->unique_id
,
1082 (int)(breakpoint
->type
),
1083 breakpoint
->address
,
1091 cortex_m3_unset_breakpoint(struct target
*target
, struct breakpoint
*breakpoint
)
1094 struct cortex_m3_common
*cortex_m3
= target_to_cm3(target
);
1095 struct cortex_m3_fp_comparator
* comparator_list
= cortex_m3
->fp_comparator_list
;
1097 if (!breakpoint
->set
)
1099 LOG_WARNING("breakpoint not set");
1103 LOG_DEBUG("BPID: %d, Type: %d, Address: 0x%08" PRIx32
" Length: %d (set=%d)",
1104 breakpoint
->unique_id
,
1105 (int)(breakpoint
->type
),
1106 breakpoint
->address
,
1110 if (breakpoint
->type
== BKPT_HARD
)
1112 int fp_num
= breakpoint
->set
- 1;
1113 if ((fp_num
< 0) || (fp_num
>= cortex_m3
->fp_num_code
))
1115 LOG_DEBUG("Invalid FP Comparator number in breakpoint");
1118 comparator_list
[fp_num
].used
= 0;
1119 comparator_list
[fp_num
].fpcr_value
= 0;
1120 target_write_u32(target
, comparator_list
[fp_num
].fpcr_address
, comparator_list
[fp_num
].fpcr_value
);
1124 /* restore original instruction (kept in target endianness) */
1125 if (breakpoint
->length
== 4)
1127 if ((retval
= target_write_memory(target
, breakpoint
->address
& 0xFFFFFFFE, 4, 1, breakpoint
->orig_instr
)) != ERROR_OK
)
1134 if ((retval
= target_write_memory(target
, breakpoint
->address
& 0xFFFFFFFE, 2, 1, breakpoint
->orig_instr
)) != ERROR_OK
)
1140 breakpoint
->set
= false;
1146 cortex_m3_add_breakpoint(struct target
*target
, struct breakpoint
*breakpoint
)
1148 struct cortex_m3_common
*cortex_m3
= target_to_cm3(target
);
1150 if (cortex_m3
->auto_bp_type
)
1152 breakpoint
->type
= (breakpoint
->address
< 0x20000000) ? BKPT_HARD
: BKPT_SOFT
;
1153 #ifdef ARMV7_GDB_HACKS
1154 if (breakpoint
->length
!= 2) {
1155 /* XXX Hack: Replace all breakpoints with length != 2 with
1156 * a hardware breakpoint. */
1157 breakpoint
->type
= BKPT_HARD
;
1158 breakpoint
->length
= 2;
1163 if ((breakpoint
->type
== BKPT_HARD
) && (breakpoint
->address
>= 0x20000000))
1165 LOG_INFO("flash patch comparator requested outside code memory region");
1166 return ERROR_TARGET_RESOURCE_NOT_AVAILABLE
;
1169 if ((breakpoint
->type
== BKPT_SOFT
) && (breakpoint
->address
< 0x20000000))
1171 LOG_INFO("soft breakpoint requested in code (flash) memory region");
1172 return ERROR_TARGET_RESOURCE_NOT_AVAILABLE
;
1175 if ((breakpoint
->type
== BKPT_HARD
) && (cortex_m3
->fp_code_available
< 1))
1177 LOG_INFO("no flash patch comparator unit available for hardware breakpoint");
1178 return ERROR_TARGET_RESOURCE_NOT_AVAILABLE
;
1181 if ((breakpoint
->length
!= 2))
1183 LOG_INFO("only breakpoints of two bytes length supported");
1184 return ERROR_TARGET_RESOURCE_NOT_AVAILABLE
;
1187 if (breakpoint
->type
== BKPT_HARD
)
1188 cortex_m3
->fp_code_available
--;
1189 cortex_m3_set_breakpoint(target
, breakpoint
);
1195 cortex_m3_remove_breakpoint(struct target
*target
, struct breakpoint
*breakpoint
)
1197 struct cortex_m3_common
*cortex_m3
= target_to_cm3(target
);
1199 /* REVISIT why check? FBP can be updated with core running ... */
1200 if (target
->state
!= TARGET_HALTED
)
1202 LOG_WARNING("target not halted");
1203 return ERROR_TARGET_NOT_HALTED
;
1206 if (cortex_m3
->auto_bp_type
)
1208 breakpoint
->type
= (breakpoint
->address
< 0x20000000) ? BKPT_HARD
: BKPT_SOFT
;
1211 if (breakpoint
->set
)
1213 cortex_m3_unset_breakpoint(target
, breakpoint
);
1216 if (breakpoint
->type
== BKPT_HARD
)
1217 cortex_m3
->fp_code_available
++;
1223 cortex_m3_set_watchpoint(struct target
*target
, struct watchpoint
*watchpoint
)
1226 uint32_t mask
, temp
;
1227 struct cortex_m3_common
*cortex_m3
= target_to_cm3(target
);
1229 /* watchpoint params were validated earlier */
1231 temp
= watchpoint
->length
;
1238 /* REVISIT Don't fully trust these "not used" records ... users
1239 * may set up breakpoints by hand, e.g. dual-address data value
1240 * watchpoint using comparator #1; comparator #0 matching cycle
1241 * count; send data trace info through ITM and TPIU; etc
1243 struct cortex_m3_dwt_comparator
*comparator
;
1245 for (comparator
= cortex_m3
->dwt_comparator_list
;
1246 comparator
->used
&& dwt_num
< cortex_m3
->dwt_num_comp
;
1247 comparator
++, dwt_num
++)
1249 if (dwt_num
>= cortex_m3
->dwt_num_comp
)
1251 LOG_ERROR("Can not find free DWT Comparator");
1254 comparator
->used
= 1;
1255 watchpoint
->set
= dwt_num
+ 1;
1257 comparator
->comp
= watchpoint
->address
;
1258 target_write_u32(target
, comparator
->dwt_comparator_address
+ 0,
1261 comparator
->mask
= mask
;
1262 target_write_u32(target
, comparator
->dwt_comparator_address
+ 4,
1265 switch (watchpoint
->rw
) {
1267 comparator
->function
= 5;
1270 comparator
->function
= 6;
1273 comparator
->function
= 7;
1276 target_write_u32(target
, comparator
->dwt_comparator_address
+ 8,
1277 comparator
->function
);
1279 LOG_DEBUG("Watchpoint (ID %d) DWT%d 0x%08x 0x%x 0x%05x",
1280 watchpoint
->unique_id
, dwt_num
,
1281 (unsigned) comparator
->comp
,
1282 (unsigned) comparator
->mask
,
1283 (unsigned) comparator
->function
);
1288 cortex_m3_unset_watchpoint(struct target
*target
, struct watchpoint
*watchpoint
)
1290 struct cortex_m3_common
*cortex_m3
= target_to_cm3(target
);
1291 struct cortex_m3_dwt_comparator
*comparator
;
1294 if (!watchpoint
->set
)
1296 LOG_WARNING("watchpoint (wpid: %d) not set",
1297 watchpoint
->unique_id
);
1301 dwt_num
= watchpoint
->set
- 1;
1303 LOG_DEBUG("Watchpoint (ID %d) DWT%d address: 0x%08x clear",
1304 watchpoint
->unique_id
, dwt_num
,
1305 (unsigned) watchpoint
->address
);
1307 if ((dwt_num
< 0) || (dwt_num
>= cortex_m3
->dwt_num_comp
))
1309 LOG_DEBUG("Invalid DWT Comparator number in watchpoint");
1313 comparator
= cortex_m3
->dwt_comparator_list
+ dwt_num
;
1314 comparator
->used
= 0;
1315 comparator
->function
= 0;
1316 target_write_u32(target
, comparator
->dwt_comparator_address
+ 8,
1317 comparator
->function
);
1319 watchpoint
->set
= false;
1325 cortex_m3_add_watchpoint(struct target
*target
, struct watchpoint
*watchpoint
)
1327 struct cortex_m3_common
*cortex_m3
= target_to_cm3(target
);
1329 if (cortex_m3
->dwt_comp_available
< 1)
1331 LOG_DEBUG("no comparators?");
1332 return ERROR_TARGET_RESOURCE_NOT_AVAILABLE
;
1335 /* hardware doesn't support data value masking */
1336 if (watchpoint
->mask
!= ~(uint32_t)0) {
1337 LOG_DEBUG("watchpoint value masks not supported");
1338 return ERROR_TARGET_RESOURCE_NOT_AVAILABLE
;
1341 /* hardware allows address masks of up to 32K */
1344 for (mask
= 0; mask
< 16; mask
++) {
1345 if ((1u << mask
) == watchpoint
->length
)
1349 LOG_DEBUG("unsupported watchpoint length");
1350 return ERROR_TARGET_RESOURCE_NOT_AVAILABLE
;
1352 if (watchpoint
->address
& ((1 << mask
) - 1)) {
1353 LOG_DEBUG("watchpoint address is unaligned");
1354 return ERROR_TARGET_RESOURCE_NOT_AVAILABLE
;
1357 /* Caller doesn't seem to be able to describe watching for data
1358 * values of zero; that flags "no value".
1360 * REVISIT This DWT may well be able to watch for specific data
1361 * values. Requires comparator #1 to set DATAVMATCH and match
1362 * the data, and another comparator (DATAVADDR0) matching addr.
1364 if (watchpoint
->value
) {
1365 LOG_DEBUG("data value watchpoint not YET supported");
1366 return ERROR_TARGET_RESOURCE_NOT_AVAILABLE
;
1369 cortex_m3
->dwt_comp_available
--;
1370 LOG_DEBUG("dwt_comp_available: %d", cortex_m3
->dwt_comp_available
);
1376 cortex_m3_remove_watchpoint(struct target
*target
, struct watchpoint
*watchpoint
)
1378 struct cortex_m3_common
*cortex_m3
= target_to_cm3(target
);
1380 /* REVISIT why check? DWT can be updated with core running ... */
1381 if (target
->state
!= TARGET_HALTED
)
1383 LOG_WARNING("target not halted");
1384 return ERROR_TARGET_NOT_HALTED
;
1387 if (watchpoint
->set
)
1389 cortex_m3_unset_watchpoint(target
, watchpoint
);
1392 cortex_m3
->dwt_comp_available
++;
1393 LOG_DEBUG("dwt_comp_available: %d", cortex_m3
->dwt_comp_available
);
1398 static void cortex_m3_enable_watchpoints(struct target
*target
)
1400 struct watchpoint
*watchpoint
= target
->watchpoints
;
1402 /* set any pending watchpoints */
1405 if (!watchpoint
->set
)
1406 cortex_m3_set_watchpoint(target
, watchpoint
);
1407 watchpoint
= watchpoint
->next
;
1411 static int cortex_m3_load_core_reg_u32(struct target
*target
,
1412 enum armv7m_regtype type
, uint32_t num
, uint32_t * value
)
1415 struct armv7m_common
*armv7m
= target_to_armv7m(target
);
1416 struct adiv5_dap
*swjdp
= &armv7m
->dap
;
1418 /* NOTE: we "know" here that the register identifiers used
1419 * in the v7m header match the Cortex-M3 Debug Core Register
1420 * Selector values for R0..R15, xPSR, MSP, and PSP.
1424 /* read a normal core register */
1425 retval
= cortexm3_dap_read_coreregister_u32(swjdp
, value
, num
);
1427 if (retval
!= ERROR_OK
)
1429 LOG_ERROR("JTAG failure %i",retval
);
1430 return ERROR_JTAG_DEVICE_ERROR
;
1432 LOG_DEBUG("load from core reg %i value 0x%" PRIx32
"",(int)num
,*value
);
1435 case ARMV7M_PRIMASK
:
1436 case ARMV7M_BASEPRI
:
1437 case ARMV7M_FAULTMASK
:
1438 case ARMV7M_CONTROL
:
1439 /* Cortex-M3 packages these four registers as bitfields
1440 * in one Debug Core register. So say r0 and r2 docs;
1441 * it was removed from r1 docs, but still works.
1443 cortexm3_dap_read_coreregister_u32(swjdp
, value
, 20);
1447 case ARMV7M_PRIMASK
:
1448 *value
= buf_get_u32((uint8_t*)value
, 0, 1);
1451 case ARMV7M_BASEPRI
:
1452 *value
= buf_get_u32((uint8_t*)value
, 8, 8);
1455 case ARMV7M_FAULTMASK
:
1456 *value
= buf_get_u32((uint8_t*)value
, 16, 1);
1459 case ARMV7M_CONTROL
:
1460 *value
= buf_get_u32((uint8_t*)value
, 24, 2);
1464 LOG_DEBUG("load from special reg %i value 0x%" PRIx32
"", (int)num
, *value
);
1468 return ERROR_INVALID_ARGUMENTS
;
1474 static int cortex_m3_store_core_reg_u32(struct target
*target
,
1475 enum armv7m_regtype type
, uint32_t num
, uint32_t value
)
1479 struct armv7m_common
*armv7m
= target_to_armv7m(target
);
1480 struct adiv5_dap
*swjdp
= &armv7m
->dap
;
1482 #ifdef ARMV7_GDB_HACKS
1483 /* If the LR register is being modified, make sure it will put us
1484 * in "thumb" mode, or an INVSTATE exception will occur. This is a
1485 * hack to deal with the fact that gdb will sometimes "forge"
1486 * return addresses, and doesn't set the LSB correctly (i.e., when
1487 * printing expressions containing function calls, it sets LR = 0.)
1488 * Valid exception return codes have bit 0 set too.
1490 if (num
== ARMV7M_R14
)
1494 /* NOTE: we "know" here that the register identifiers used
1495 * in the v7m header match the Cortex-M3 Debug Core Register
1496 * Selector values for R0..R15, xPSR, MSP, and PSP.
1500 retval
= cortexm3_dap_write_coreregister_u32(swjdp
, value
, num
);
1501 if (retval
!= ERROR_OK
)
1505 LOG_ERROR("JTAG failure %i", retval
);
1506 r
= armv7m
->core_cache
->reg_list
+ num
;
1507 r
->dirty
= r
->valid
;
1508 return ERROR_JTAG_DEVICE_ERROR
;
1510 LOG_DEBUG("write core reg %i value 0x%" PRIx32
"", (int)num
, value
);
1513 case ARMV7M_PRIMASK
:
1514 case ARMV7M_BASEPRI
:
1515 case ARMV7M_FAULTMASK
:
1516 case ARMV7M_CONTROL
:
1517 /* Cortex-M3 packages these four registers as bitfields
1518 * in one Debug Core register. So say r0 and r2 docs;
1519 * it was removed from r1 docs, but still works.
1521 cortexm3_dap_read_coreregister_u32(swjdp
, ®
, 20);
1525 case ARMV7M_PRIMASK
:
1526 buf_set_u32((uint8_t*)®
, 0, 1, value
);
1529 case ARMV7M_BASEPRI
:
1530 buf_set_u32((uint8_t*)®
, 8, 8, value
);
1533 case ARMV7M_FAULTMASK
:
1534 buf_set_u32((uint8_t*)®
, 16, 1, value
);
1537 case ARMV7M_CONTROL
:
1538 buf_set_u32((uint8_t*)®
, 24, 2, value
);
1542 cortexm3_dap_write_coreregister_u32(swjdp
, reg
, 20);
1544 LOG_DEBUG("write special reg %i value 0x%" PRIx32
" ", (int)num
, value
);
1548 return ERROR_INVALID_ARGUMENTS
;
1554 static int cortex_m3_read_memory(struct target
*target
, uint32_t address
,
1555 uint32_t size
, uint32_t count
, uint8_t *buffer
)
1557 struct armv7m_common
*armv7m
= target_to_armv7m(target
);
1558 struct adiv5_dap
*swjdp
= &armv7m
->dap
;
1559 int retval
= ERROR_INVALID_ARGUMENTS
;
1561 /* cortex_m3 handles unaligned memory access */
1562 if (count
&& buffer
) {
1565 retval
= mem_ap_read_buf_u32(swjdp
, buffer
, 4 * count
, address
);
1568 retval
= mem_ap_read_buf_u16(swjdp
, buffer
, 2 * count
, address
);
1571 retval
= mem_ap_read_buf_u8(swjdp
, buffer
, count
, address
);
1579 static int cortex_m3_write_memory(struct target
*target
, uint32_t address
,
1580 uint32_t size
, uint32_t count
, uint8_t *buffer
)
1582 struct armv7m_common
*armv7m
= target_to_armv7m(target
);
1583 struct adiv5_dap
*swjdp
= &armv7m
->dap
;
1584 int retval
= ERROR_INVALID_ARGUMENTS
;
1586 if (count
&& buffer
) {
1589 retval
= mem_ap_write_buf_u32(swjdp
, buffer
, 4 * count
, address
);
1592 retval
= mem_ap_write_buf_u16(swjdp
, buffer
, 2 * count
, address
);
1595 retval
= mem_ap_write_buf_u8(swjdp
, buffer
, count
, address
);
1603 static int cortex_m3_bulk_write_memory(struct target
*target
, uint32_t address
,
1604 uint32_t count
, uint8_t *buffer
)
1606 return cortex_m3_write_memory(target
, address
, 4, count
, buffer
);
1609 static int cortex_m3_init_target(struct command_context
*cmd_ctx
,
1610 struct target
*target
)
1612 armv7m_build_reg_cache(target
);
1616 /* REVISIT cache valid/dirty bits are unmaintained. We could set "valid"
1617 * on r/w if the core is not running, and clear on resume or reset ... or
1618 * at least, in a post_restore_context() method.
1621 struct dwt_reg_state
{
1622 struct target
*target
;
1624 uint32_t value
; /* scratch/cache */
1627 static int cortex_m3_dwt_get_reg(struct reg
*reg
)
1629 struct dwt_reg_state
*state
= reg
->arch_info
;
1631 return target_read_u32(state
->target
, state
->addr
, &state
->value
);
1634 static int cortex_m3_dwt_set_reg(struct reg
*reg
, uint8_t *buf
)
1636 struct dwt_reg_state
*state
= reg
->arch_info
;
1638 return target_write_u32(state
->target
, state
->addr
,
1639 buf_get_u32(buf
, 0, reg
->size
));
1648 static struct dwt_reg dwt_base_regs
[] = {
1649 { DWT_CTRL
, "dwt_ctrl", 32, },
1650 /* NOTE that Erratum 532314 (fixed r2p0) affects CYCCNT: it wrongly
1651 * increments while the core is asleep.
1653 { DWT_CYCCNT
, "dwt_cyccnt", 32, },
1654 /* plus some 8 bit counters, useful for profiling with TPIU */
1657 static struct dwt_reg dwt_comp
[] = {
1658 #define DWT_COMPARATOR(i) \
1659 { DWT_COMP0 + 0x10 * (i), "dwt_" #i "_comp", 32, }, \
1660 { DWT_MASK0 + 0x10 * (i), "dwt_" #i "_mask", 4, }, \
1661 { DWT_FUNCTION0 + 0x10 * (i), "dwt_" #i "_function", 32, }
1666 #undef DWT_COMPARATOR
1669 static const struct reg_arch_type dwt_reg_type
= {
1670 .get
= cortex_m3_dwt_get_reg
,
1671 .set
= cortex_m3_dwt_set_reg
,
1675 cortex_m3_dwt_addreg(struct target
*t
, struct reg
*r
, struct dwt_reg
*d
)
1677 struct dwt_reg_state
*state
;
1679 state
= calloc(1, sizeof *state
);
1682 state
->addr
= d
->addr
;
1687 r
->value
= &state
->value
;
1688 r
->arch_info
= state
;
1689 r
->type
= &dwt_reg_type
;
1693 cortex_m3_dwt_setup(struct cortex_m3_common
*cm3
, struct target
*target
)
1696 struct reg_cache
*cache
;
1697 struct cortex_m3_dwt_comparator
*comparator
;
1700 target_read_u32(target
, DWT_CTRL
, &dwtcr
);
1702 LOG_DEBUG("no DWT");
1706 cm3
->dwt_num_comp
= (dwtcr
>> 28) & 0xF;
1707 cm3
->dwt_comp_available
= cm3
->dwt_num_comp
;
1708 cm3
->dwt_comparator_list
= calloc(cm3
->dwt_num_comp
,
1709 sizeof(struct cortex_m3_dwt_comparator
));
1710 if (!cm3
->dwt_comparator_list
) {
1712 cm3
->dwt_num_comp
= 0;
1713 LOG_ERROR("out of mem");
1717 cache
= calloc(1, sizeof *cache
);
1720 free(cm3
->dwt_comparator_list
);
1723 cache
->name
= "cortex-m3 dwt registers";
1724 cache
->num_regs
= 2 + cm3
->dwt_num_comp
* 3;
1725 cache
->reg_list
= calloc(cache
->num_regs
, sizeof *cache
->reg_list
);
1726 if (!cache
->reg_list
) {
1731 for (reg
= 0; reg
< 2; reg
++)
1732 cortex_m3_dwt_addreg(target
, cache
->reg_list
+ reg
,
1733 dwt_base_regs
+ reg
);
1735 comparator
= cm3
->dwt_comparator_list
;
1736 for (i
= 0; i
< cm3
->dwt_num_comp
; i
++, comparator
++) {
1739 comparator
->dwt_comparator_address
= DWT_COMP0
+ 0x10 * i
;
1740 for (j
= 0; j
< 3; j
++, reg
++)
1741 cortex_m3_dwt_addreg(target
, cache
->reg_list
+ reg
,
1742 dwt_comp
+ 3 * i
+ j
);
1745 *register_get_last_cache_p(&target
->reg_cache
) = cache
;
1746 cm3
->dwt_cache
= cache
;
1748 LOG_DEBUG("DWT dwtcr 0x%" PRIx32
", comp %d, watch%s",
1749 dwtcr
, cm3
->dwt_num_comp
,
1750 (dwtcr
& (0xf << 24)) ? " only" : "/trigger");
1752 /* REVISIT: if num_comp > 1, check whether comparator #1 can
1753 * implement single-address data value watchpoints ... so we
1754 * won't need to check it later, when asked to set one up.
1758 static int cortex_m3_examine(struct target
*target
)
1761 uint32_t cpuid
, fpcr
;
1763 struct cortex_m3_common
*cortex_m3
= target_to_cm3(target
);
1764 struct adiv5_dap
*swjdp
= &cortex_m3
->armv7m
.dap
;
1766 if ((retval
= ahbap_debugport_init(swjdp
)) != ERROR_OK
)
1769 if (!target_was_examined(target
))
1771 target_set_examined(target
);
1773 /* Read from Device Identification Registers */
1774 retval
= target_read_u32(target
, CPUID
, &cpuid
);
1775 if (retval
!= ERROR_OK
)
1778 if (((cpuid
>> 4) & 0xc3f) == 0xc23)
1779 LOG_DEBUG("Cortex-M3 r%" PRId8
"p%" PRId8
" processor detected",
1780 (uint8_t)((cpuid
>> 20) & 0xf), (uint8_t)((cpuid
>> 0) & 0xf));
1781 LOG_DEBUG("cpuid: 0x%8.8" PRIx32
"", cpuid
);
1783 /* NOTE: FPB and DWT are both optional. */
1786 target_read_u32(target
, FP_CTRL
, &fpcr
);
1787 cortex_m3
->auto_bp_type
= 1;
1788 cortex_m3
->fp_num_code
= ((fpcr
>> 8) & 0x70) | ((fpcr
>> 4) & 0xF); /* bits [14:12] and [7:4] */
1789 cortex_m3
->fp_num_lit
= (fpcr
>> 8) & 0xF;
1790 cortex_m3
->fp_code_available
= cortex_m3
->fp_num_code
;
1791 cortex_m3
->fp_comparator_list
= calloc(cortex_m3
->fp_num_code
+ cortex_m3
->fp_num_lit
, sizeof(struct cortex_m3_fp_comparator
));
1792 cortex_m3
->fpb_enabled
= fpcr
& 1;
1793 for (i
= 0; i
< cortex_m3
->fp_num_code
+ cortex_m3
->fp_num_lit
; i
++)
1795 cortex_m3
->fp_comparator_list
[i
].type
= (i
< cortex_m3
->fp_num_code
) ? FPCR_CODE
: FPCR_LITERAL
;
1796 cortex_m3
->fp_comparator_list
[i
].fpcr_address
= FP_COMP0
+ 4 * i
;
1798 LOG_DEBUG("FPB fpcr 0x%" PRIx32
", numcode %i, numlit %i", fpcr
, cortex_m3
->fp_num_code
, cortex_m3
->fp_num_lit
);
1801 cortex_m3_dwt_setup(cortex_m3
, target
);
1803 /* These hardware breakpoints only work for code in flash! */
1804 LOG_INFO("%s: hardware has %d breakpoints, %d watchpoints",
1805 target_name(target
),
1806 cortex_m3
->fp_num_code
,
1807 cortex_m3
->dwt_num_comp
);
1813 static int cortex_m3_dcc_read(struct adiv5_dap
*swjdp
, uint8_t *value
, uint8_t *ctrl
)
1817 mem_ap_read_buf_u16(swjdp
, (uint8_t*)&dcrdr
, 1, DCB_DCRDR
);
1818 *ctrl
= (uint8_t)dcrdr
;
1819 *value
= (uint8_t)(dcrdr
>> 8);
1821 LOG_DEBUG("data 0x%x ctrl 0x%x", *value
, *ctrl
);
1823 /* write ack back to software dcc register
1824 * signify we have read data */
1825 if (dcrdr
& (1 << 0))
1828 mem_ap_write_buf_u16(swjdp
, (uint8_t*)&dcrdr
, 1, DCB_DCRDR
);
1834 static int cortex_m3_target_request_data(struct target
*target
,
1835 uint32_t size
, uint8_t *buffer
)
1837 struct armv7m_common
*armv7m
= target_to_armv7m(target
);
1838 struct adiv5_dap
*swjdp
= &armv7m
->dap
;
1843 for (i
= 0; i
< (size
* 4); i
++)
1845 cortex_m3_dcc_read(swjdp
, &data
, &ctrl
);
1852 static int cortex_m3_handle_target_request(void *priv
)
1854 struct target
*target
= priv
;
1855 if (!target_was_examined(target
))
1857 struct armv7m_common
*armv7m
= target_to_armv7m(target
);
1858 struct adiv5_dap
*swjdp
= &armv7m
->dap
;
1860 if (!target
->dbg_msg_enabled
)
1863 if (target
->state
== TARGET_RUNNING
)
1868 cortex_m3_dcc_read(swjdp
, &data
, &ctrl
);
1870 /* check if we have data */
1871 if (ctrl
& (1 << 0))
1875 /* we assume target is quick enough */
1877 cortex_m3_dcc_read(swjdp
, &data
, &ctrl
);
1878 request
|= (data
<< 8);
1879 cortex_m3_dcc_read(swjdp
, &data
, &ctrl
);
1880 request
|= (data
<< 16);
1881 cortex_m3_dcc_read(swjdp
, &data
, &ctrl
);
1882 request
|= (data
<< 24);
1883 target_request(target
, request
);
1890 static int cortex_m3_init_arch_info(struct target
*target
,
1891 struct cortex_m3_common
*cortex_m3
, struct jtag_tap
*tap
)
1894 struct armv7m_common
*armv7m
= &cortex_m3
->armv7m
;
1896 armv7m_init_arch_info(target
, armv7m
);
1898 /* prepare JTAG information for the new target */
1899 cortex_m3
->jtag_info
.tap
= tap
;
1900 cortex_m3
->jtag_info
.scann_size
= 4;
1902 armv7m
->arm
.dap
= &armv7m
->dap
;
1904 /* Leave (only) generic DAP stuff for debugport_init(); */
1905 armv7m
->dap
.jtag_info
= &cortex_m3
->jtag_info
;
1906 armv7m
->dap
.memaccess_tck
= 8;
1907 /* Cortex-M3 has 4096 bytes autoincrement range */
1908 armv7m
->dap
.tar_autoincr_block
= (1 << 12);
1910 /* register arch-specific functions */
1911 armv7m
->examine_debug_reason
= cortex_m3_examine_debug_reason
;
1913 armv7m
->post_debug_entry
= NULL
;
1915 armv7m
->pre_restore_context
= NULL
;
1917 armv7m
->load_core_reg_u32
= cortex_m3_load_core_reg_u32
;
1918 armv7m
->store_core_reg_u32
= cortex_m3_store_core_reg_u32
;
1920 target_register_timer_callback(cortex_m3_handle_target_request
, 1, 1, target
);
1922 if ((retval
= arm_jtag_setup_connection(&cortex_m3
->jtag_info
)) != ERROR_OK
)
1930 static int cortex_m3_target_create(struct target
*target
, Jim_Interp
*interp
)
1932 struct cortex_m3_common
*cortex_m3
= calloc(1,sizeof(struct cortex_m3_common
));
1934 cortex_m3
->common_magic
= CORTEX_M3_COMMON_MAGIC
;
1935 cortex_m3_init_arch_info(target
, cortex_m3
, target
->tap
);
1940 /*--------------------------------------------------------------------------*/
1942 static int cortex_m3_verify_pointer(struct command_context
*cmd_ctx
,
1943 struct cortex_m3_common
*cm3
)
1945 if (cm3
->common_magic
!= CORTEX_M3_COMMON_MAGIC
) {
1946 command_print(cmd_ctx
, "target is not a Cortex-M3");
1947 return ERROR_TARGET_INVALID
;
1953 * Only stuff below this line should need to verify that its target
1954 * is a Cortex-M3. Everything else should have indirected through the
1955 * cortexm3_target structure, which is only used with CM3 targets.
1958 static const struct {
1962 { "hard_err", VC_HARDERR
, },
1963 { "int_err", VC_INTERR
, },
1964 { "bus_err", VC_BUSERR
, },
1965 { "state_err", VC_STATERR
, },
1966 { "chk_err", VC_CHKERR
, },
1967 { "nocp_err", VC_NOCPERR
, },
1968 { "mm_err", VC_MMERR
, },
1969 { "reset", VC_CORERESET
, },
1972 COMMAND_HANDLER(handle_cortex_m3_vector_catch_command
)
1974 struct target
*target
= get_current_target(CMD_CTX
);
1975 struct cortex_m3_common
*cortex_m3
= target_to_cm3(target
);
1976 struct armv7m_common
*armv7m
= &cortex_m3
->armv7m
;
1977 struct adiv5_dap
*swjdp
= &armv7m
->dap
;
1981 retval
= cortex_m3_verify_pointer(CMD_CTX
, cortex_m3
);
1982 if (retval
!= ERROR_OK
)
1985 mem_ap_read_atomic_u32(swjdp
, DCB_DEMCR
, &demcr
);
1990 if (CMD_ARGC
== 1) {
1991 if (strcmp(CMD_ARGV
[0], "all") == 0) {
1992 catch = VC_HARDERR
| VC_INTERR
| VC_BUSERR
1993 | VC_STATERR
| VC_CHKERR
| VC_NOCPERR
1994 | VC_MMERR
| VC_CORERESET
;
1996 } else if (strcmp(CMD_ARGV
[0], "none") == 0) {
2000 while (CMD_ARGC
-- > 0) {
2002 for (i
= 0; i
< ARRAY_SIZE(vec_ids
); i
++) {
2003 if (strcmp(CMD_ARGV
[CMD_ARGC
], vec_ids
[i
].name
) != 0)
2005 catch |= vec_ids
[i
].mask
;
2008 if (i
== ARRAY_SIZE(vec_ids
)) {
2009 LOG_ERROR("No CM3 vector '%s'", CMD_ARGV
[CMD_ARGC
]);
2010 return ERROR_INVALID_ARGUMENTS
;
2014 /* For now, armv7m->demcr only stores vector catch flags. */
2015 armv7m
->demcr
= catch;
2020 /* write, but don't assume it stuck (why not??) */
2021 mem_ap_write_u32(swjdp
, DCB_DEMCR
, demcr
);
2022 mem_ap_read_atomic_u32(swjdp
, DCB_DEMCR
, &demcr
);
2024 /* FIXME be sure to clear DEMCR on clean server shutdown.
2025 * Otherwise the vector catch hardware could fire when there's
2026 * no debugger hooked up, causing much confusion...
2030 for (unsigned i
= 0; i
< ARRAY_SIZE(vec_ids
); i
++)
2032 command_print(CMD_CTX
, "%9s: %s", vec_ids
[i
].name
,
2033 (demcr
& vec_ids
[i
].mask
) ? "catch" : "ignore");
2039 COMMAND_HANDLER(handle_cortex_m3_mask_interrupts_command
)
2041 struct target
*target
= get_current_target(CMD_CTX
);
2042 struct cortex_m3_common
*cortex_m3
= target_to_cm3(target
);
2045 retval
= cortex_m3_verify_pointer(CMD_CTX
, cortex_m3
);
2046 if (retval
!= ERROR_OK
)
2049 if (target
->state
!= TARGET_HALTED
)
2051 command_print(CMD_CTX
, "target must be stopped for \"%s\" command", CMD_NAME
);
2058 COMMAND_PARSE_ON_OFF(CMD_ARGV
[0], enable
);
2059 uint32_t mask_on
= C_HALT
| (enable
? C_MASKINTS
: 0);
2060 uint32_t mask_off
= enable
? 0 : C_MASKINTS
;
2061 cortex_m3_write_debug_halt_mask(target
, mask_on
, mask_off
);
2064 command_print(CMD_CTX
, "cortex_m3 interrupt mask %s",
2065 (cortex_m3
->dcb_dhcsr
& C_MASKINTS
) ? "on" : "off");
2070 static const struct command_registration cortex_m3_exec_command_handlers
[] = {
2073 .handler
= handle_cortex_m3_mask_interrupts_command
,
2074 .mode
= COMMAND_EXEC
,
2075 .help
= "mask cortex_m3 interrupts",
2076 .usage
= "['on'|'off']",
2079 .name
= "vector_catch",
2080 .handler
= handle_cortex_m3_vector_catch_command
,
2081 .mode
= COMMAND_EXEC
,
2082 .help
= "configure hardware vectors to trigger debug entry",
2083 .usage
= "['all'|'none'|('bus_err'|'chk_err'|...)*]",
2085 COMMAND_REGISTRATION_DONE
2087 static const struct command_registration cortex_m3_command_handlers
[] = {
2089 .chain
= armv7m_command_handlers
,
2092 .name
= "cortex_m3",
2093 .mode
= COMMAND_EXEC
,
2094 .help
= "Cortex-M3 command group",
2095 .chain
= cortex_m3_exec_command_handlers
,
2097 COMMAND_REGISTRATION_DONE
2100 struct target_type cortexm3_target
=
2102 .name
= "cortex_m3",
2104 .poll
= cortex_m3_poll
,
2105 .arch_state
= armv7m_arch_state
,
2107 .target_request_data
= cortex_m3_target_request_data
,
2109 .halt
= cortex_m3_halt
,
2110 .resume
= cortex_m3_resume
,
2111 .step
= cortex_m3_step
,
2113 .assert_reset
= cortex_m3_assert_reset
,
2114 .deassert_reset
= cortex_m3_deassert_reset
,
2115 .soft_reset_halt
= cortex_m3_soft_reset_halt
,
2117 .get_gdb_reg_list
= armv7m_get_gdb_reg_list
,
2119 .read_memory
= cortex_m3_read_memory
,
2120 .write_memory
= cortex_m3_write_memory
,
2121 .bulk_write_memory
= cortex_m3_bulk_write_memory
,
2122 .checksum_memory
= armv7m_checksum_memory
,
2123 .blank_check_memory
= armv7m_blank_check_memory
,
2125 .run_algorithm
= armv7m_run_algorithm
,
2127 .add_breakpoint
= cortex_m3_add_breakpoint
,
2128 .remove_breakpoint
= cortex_m3_remove_breakpoint
,
2129 .add_watchpoint
= cortex_m3_add_watchpoint
,
2130 .remove_watchpoint
= cortex_m3_remove_watchpoint
,
2132 .commands
= cortex_m3_command_handlers
,
2133 .target_create
= cortex_m3_target_create
,
2134 .init_target
= cortex_m3_init_target
,
2135 .examine
= cortex_m3_examine
,