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Tomas Vanek 88f429ead0 target/cortex_m: faster reading of all CPU registers 
Without the change cortex_m_debug_entry() reads all registers
calling cortex_m_load_core_reg_u32() for each register with
a poor usage of JTAG/SWD queue.
It is time consuming, especially on an USB FS based adapter.
Moreover if target_request debugmsgs are enabled, DCB_DCRDR
is saved and restored on each register read.

This change introduces cortex_m_fast_read_all_regs()
which queues all register reads and a single dap_run() transaction
does all work.

cortex_m_fast_read_all_regs() reads all registers unconditionally
regardless register cache is valid or not. This is a difference
from the original cortex_m_debug_entry() code.

cortex_m_debug_entry times from -d3 log, Cortex-M4F and CMSIS-DAP
(Kinetis K28F-FRDM kit)

target_request |                time [ms]
debugmsgs      | without the change | with the change
---------------+--------------------+-----------------
disable        |        186         |       27
enable         |        232         |       29

Added checking of DHCSR.S_REGRDY flag. If "not ready" is seen,
cortex_m->slow_register_read is set and fallback to the old
register read method cortex_m_slow_read_all_regs() is used
instead of cortex_m_fast_read_all_regs().

Change-Id: I0665d94b97ede217394640871dc451ec93410254
Signed-off-by: Tomas Vanek <vanekt@fbl.cz>
Reviewed-on: https://review.openocd.org/c/openocd/+/5321
Tested-by: jenkins
Reviewed-by: Andreas Fritiofson <andreas.fritiofson@gmail.com>
Reviewed-by: Antonio Borneo <borneo.antonio@gmail.com>
 		2021-11-18 21:09:34 +00:00
..
openrisc openocd: fix simple cases of NULL comparison 2021-07-24 10:37:49 +01:00
riscv riscv: use relative path to include contrib's data 2021-10-25 16:12:54 +00:00
Makefile.am arm_coresight: add include file and use it 2021-09-25 13:00:27 +00:00
a64_disassembler.c target/aarch64: a64 disassembler 2020-10-03 11:21:15 +01:00
a64_disassembler.h target/aarch64: a64 disassembler 2020-10-03 11:21:15 +01:00
aarch64.c arm_coresight: add include file and use it 2021-09-25 13:00:27 +00:00
aarch64.h target/arm: rename CamelCase symbols 2021-07-20 14:52:25 +01:00
adi_v5_dapdirect.c
…
adi_v5_jtag.c target/adi_v5_jtag: Add support for 8-bit IR JTAG-DP 2021-08-22 20:27:59 +00:00
adi_v5_swd.c openocd: fix simple cases of NULL comparison 2021-07-24 10:37:49 +01:00
algorithm.c
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algorithm.h Cleanup of config/includes. 2021-05-01 14:35:09 +01:00
arc.c openocd: remove NULL comparisons with checkpatch [1/2] 2021-07-24 10:38:00 +01:00
arc.h target: fix some minor typo 2021-05-22 10:06:45 +01:00
arc_cmd.c helper/jim-nvp: comply with coding style [2/2] 2021-06-04 17:40:48 +01:00
arc_cmd.h
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arc_jtag.c openocd: fix doxygen parameters of functions 2021-01-13 11:33:53 +00:00
arc_jtag.h
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arc_mem.c openocd: fix simple cases of Yoda condition 2021-07-20 14:55:24 +01:00
arc_mem.h Introduce ARCv2 architecture related code 2020-02-27 06:46:51 +00:00
arm.h openocd: fix simple cases of NULL comparison 2021-07-24 10:37:49 +01:00
arm7_9_common.c openocd: fix simple cases of NULL comparison 2021-07-24 10:37:49 +01:00
arm7_9_common.h target/arm926ejs: fix memory leaks 2020-07-08 22:07:38 +01:00
arm7tdmi.c target/arm: optimize architecture flags 2021-06-18 23:12:54 +01:00
arm7tdmi.h target/arm7tdmi: fix memory leak of register cache 2020-07-26 20:12:48 +01:00
arm9tdmi.c target/arm: optimize architecture flags 2021-06-18 23:12:54 +01:00
arm9tdmi.h target: fix memory leaks on targets based on arm9tdmi 2020-07-26 20:12:21 +01:00
arm11.c openocd: fix simple cases of NULL comparison 2021-07-24 10:37:49 +01:00
arm11.h
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arm11_dbgtap.c openocd: fix simple cases of NULL comparison 2021-07-24 10:37:49 +01:00
arm11_dbgtap.h target/arm: rename CamelCase symbols 2021-07-20 14:52:25 +01:00
arm720t.c target/arm: rename CamelCase symbols 2021-07-20 14:52:25 +01:00
arm720t.h
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arm920t.c openocd: fix simple cases of NULL comparison 2021-07-24 10:37:49 +01:00
arm920t.h
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arm926ejs.c target/arm: rename CamelCase symbols 2021-07-20 14:52:25 +01:00
arm926ejs.h target/arm: rename CamelCase symbols 2021-07-20 14:52:25 +01:00
arm946e.c target: declare local symbols as static 2020-11-04 17:39:17 +00:00
arm946e.h
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arm966e.c target: use proper format with uint32_t 2020-09-05 17:12:39 +01:00
arm966e.h
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arm_adi_v5.c arm_adi_v5: drop ANY_ID from table dap_part_nums 2021-09-25 13:11:41 +00:00
arm_adi_v5.h arm_adi_v5: simplify handling of AP type 2021-09-25 13:00:55 +00:00
arm_coresight.h openocd: remove 'src' prefix from #include path 2021-10-25 16:12:42 +00:00
arm_cti.c openocd: prevent jimtcl error message while testing commands 2021-09-25 13:13:28 +00:00
arm_cti.h
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arm_dap.c openocd: prevent jimtcl error message while testing commands 2021-09-25 13:13:28 +00:00
arm_disassembler.c target/arm: opcodes: rename CamelCase symbols and uppercase variables 2021-07-20 14:52:49 +01:00
arm_disassembler.h target/arm: opcodes: rename CamelCase symbols and uppercase variables 2021-07-20 14:52:49 +01:00
arm_dpm.c openocd: fix simple cases of NULL comparison 2021-07-24 10:37:49 +01:00
arm_dpm.h target/arm: rename CamelCase symbols 2021-07-20 14:52:25 +01:00
arm_jtag.c openocd: fix simple cases of NULL comparison 2021-07-24 10:37:49 +01:00
arm_jtag.h target/arm926ejs: fix memory leaks 2020-07-08 22:07:38 +01:00
arm_opcodes.h target/arm: opcodes: rename CamelCase symbols and uppercase variables 2021-07-20 14:52:49 +01:00
arm_semihosting.c arm_semihosting: fix two dead assignments 2021-10-25 16:09:12 +00:00
arm_semihosting.h
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arm_simulator.c target/arm: opcodes: rename CamelCase symbols and uppercase variables 2021-07-20 14:52:49 +01:00
arm_simulator.h
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arm_tpiu_swo.c arm_tpiu_swo: fix two dead assignments 2021-10-25 16:09:02 +00:00
arm_tpiu_swo.h armv7m_trace: get rid of the old tpiu code 2021-03-10 21:34:04 +00:00
armv4_5.c openocd: fix simple cases of NULL comparison 2021-07-24 10:37:49 +01:00
armv4_5.h
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armv4_5_cache.c
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armv4_5_cache.h Cleanup of config/includes. 2021-05-01 14:35:09 +01:00
armv4_5_mmu.c
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armv4_5_mmu.h
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armv7a.c openocd: remove last NULL comparisons 2021-09-18 15:22:30 +00:00
armv7a.h target/adiv5: Large Physical Address Extension 2021-07-02 17:12:11 +01:00
armv7a_cache.c openocd: remove last NULL comparisons 2021-09-18 15:22:30 +00:00
armv7a_cache.h target: use proper format with uint32_t 2020-09-05 17:12:39 +01:00
armv7a_cache_l2x.c openocd: remove last NULL comparisons 2021-09-18 15:22:30 +00:00
armv7a_cache_l2x.h
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armv7a_mmu.c openocd: fix simple cases of NULL comparison 2021-07-24 10:37:49 +01:00
armv7a_mmu.h
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armv7m.c target/cortex_m: faster reading of all CPU registers 2021-11-18 21:09:34 +00:00
armv7m.h target/cortex_m: faster reading of all CPU registers 2021-11-18 21:09:34 +00:00
armv7m_trace.c armv7m_trace: get rid of the old tpiu code 2021-03-10 21:34:04 +00:00
armv7m_trace.h helper: Remove src/helper from include dirs 2021-10-02 13:18:15 +00:00
armv8.c armv8: fix five dead assignments 2021-10-25 16:09:26 +00:00
armv8.h target/adiv5: Large Physical Address Extension 2021-07-02 17:12:11 +01:00
armv8_cache.c openocd: remove last NULL comparisons 2021-09-18 15:22:30 +00:00
armv8_cache.h
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armv8_dpm.c openocd: fix simple cases of NULL comparison 2021-07-24 10:37:49 +01:00
armv8_dpm.h target/aarch64: fix watchpoint management 2021-05-22 10:04:20 +01:00
armv8_opcodes.c
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armv8_opcodes.h target/arm: opcodes: rename CamelCase symbols and uppercase variables 2021-07-20 14:52:49 +01:00
avr32_ap7k.c target: rename CamelCase symbols 2021-07-24 10:37:25 +01:00
avr32_ap7k.h target: rename CamelCase symbols 2021-07-24 10:37:25 +01:00
avr32_jtag.c openocd: fix simple cases of NULL comparison 2021-07-24 10:37:49 +01:00
avr32_jtag.h
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avr32_mem.c target: fix some minor typo 2021-05-22 10:06:45 +01:00
avr32_mem.h
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avr32_regs.c
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avr32_regs.h
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avrt.c openocd: fix simple cases of NULL comparison 2021-07-24 10:37:49 +01:00
avrt.h
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breakpoints.c openocd: remove last NULL comparisons 2021-09-18 15:22:30 +00:00
breakpoints.h target: Rename 'linked_BRP' to 'linked_brp' 2021-06-18 23:10:57 +01:00
cortex_a.c arm_coresight: add include file and use it 2021-09-25 13:00:27 +00:00
cortex_a.h target/arm: rename CamelCase symbols 2021-07-20 14:52:25 +01:00
cortex_m.c target/cortex_m: faster reading of all CPU registers 2021-11-18 21:09:34 +00:00
cortex_m.h target/cortex_m: faster reading of all CPU registers 2021-11-18 21:09:34 +00:00
dsp563xx.c target: rename CamelCase symbols 2021-07-24 10:37:25 +01:00
dsp563xx.h target/dsp563xx: Use bool data type for 'hardware_breakpoints_cleared' 2021-06-26 14:40:34 +01:00
dsp563xx_once.c coding style: wrap lines longer than 120 chars 2020-05-09 14:40:52 +01:00
dsp563xx_once.h
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dsp5680xx.c openocd: fix simple cases of NULL comparison 2021-07-24 10:37:49 +01:00
dsp5680xx.h target: rename CamelCase symbols 2021-07-24 10:37:25 +01:00
embeddedice.c jtag: remove minidriver code and minidriver-dummy 2021-03-19 21:56:06 +00:00
embeddedice.h target/arm: rename CamelCase symbols 2021-07-20 14:52:25 +01:00
esirisc.c openocd: remove NULL comparisons with checkpatch [1/2] 2021-07-24 10:38:00 +01:00
esirisc.h target: rename CamelCase symbols 2021-07-24 10:37:25 +01:00
esirisc_jtag.c openocd: remove NULL comparisons with checkpatch [1/2] 2021-07-24 10:38:00 +01:00
esirisc_jtag.h
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esirisc_regs.h target: rename CamelCase symbols 2021-07-24 10:37:25 +01:00
esirisc_trace.c openocd: fix simple cases of NULL comparison 2021-07-24 10:37:49 +01:00
esirisc_trace.h
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etb.c openocd: fix simple cases of NULL comparison 2021-07-24 10:37:49 +01:00
etb.h
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etm.c openocd: remove NULL comparisons with checkpatch [1/2] 2021-07-24 10:38:00 +01:00
etm.h target: fix minor typos and duplicated words 2020-07-26 23:09:45 +01:00
etm_dummy.c
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etm_dummy.h
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fa526.c target: fix memory leaks on targets based on arm9tdmi 2020-07-26 20:12:21 +01:00
feroceon.c target/arm: rename CamelCase symbols 2021-07-20 14:52:25 +01:00
hla_target.c armv7m.h: relax dependency from 'arm_adi_v5.h' 2021-09-25 12:59:12 +00:00
image.c openocd: fix simple cases of NULL comparison 2021-07-24 10:37:49 +01:00
image.h Cleanup of config/includes. 2021-05-01 14:35:09 +01:00
lakemont.c target/lakemont: fix dead assignment 2021-10-25 16:10:04 +00:00
lakemont.h
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ls1_sap.c openocd: remove NULL comparisons with checkpatch [1/2] 2021-07-24 10:38:00 +01:00
mem_ap.c openocd: remove NULL comparisons with checkpatch [1/2] 2021-07-24 10:38:00 +01:00
mips32.c Use boolean argument for register_get_by_name() 2021-06-18 23:14:27 +01:00
mips32.h target/mips: rename CamelCase symbols 2021-07-20 14:53:03 +01:00
mips32_dmaacc.c
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mips32_dmaacc.h
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mips32_pracc.c jtag: align adapter speed code to new structure 2021-11-13 10:50:34 +00:00
mips32_pracc.h target/mips: Remove typedef'd struct 2021-03-10 21:30:04 +00:00
mips64.c coding style: fix space separation 2020-07-08 22:08:08 +01:00
mips64.h
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mips64_pracc.c jtag: align adapter speed code to new structure 2021-11-13 10:50:34 +00:00
mips64_pracc.h
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mips_ejtag.c openocd: fix simple cases of NULL comparison 2021-07-24 10:37:49 +01:00
mips_ejtag.h target/mips: rename CamelCase symbols 2021-07-20 14:53:03 +01:00
mips_m4k.c openocd: remove last NULL comparisons 2021-09-18 15:22:30 +00:00
mips_m4k.h
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mips_mips64.c openocd: fix simple cases of Yoda condition 2021-07-20 14:55:24 +01:00
mips_mips64.h
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nds32.c openocd: fix Yoda conditions with checkpatch 2021-07-24 10:38:31 +01:00
nds32.h openocd: fix simple cases of NULL comparison 2021-07-24 10:37:49 +01:00
nds32_aice.c openocd: remove NULL comparisons with checkpatch [1/2] 2021-07-24 10:38:00 +01:00
nds32_aice.h
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nds32_cmd.c openocd: fix Yoda conditions with checkpatch 2021-07-24 10:38:31 +01:00
nds32_cmd.h
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nds32_disassembler.c openocd: manually fix Yoda conditions 2021-07-20 14:55:43 +01:00
nds32_disassembler.h
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nds32_edm.h Cleanup of config/includes. 2021-05-01 14:35:09 +01:00
nds32_insn.h target/nds32: use lowercase for C variables 2021-07-20 14:54:27 +01:00
nds32_reg.c target: use proper format with uint32_t 2020-09-05 17:12:39 +01:00
nds32_reg.h
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nds32_tlb.c target/nds32: rename CamelCase symbols 2021-07-20 14:53:12 +01:00
nds32_tlb.h target/nds32: rename CamelCase symbols 2021-07-20 14:53:12 +01:00
nds32_v2.c openocd: fix Yoda conditions with checkpatch 2021-07-24 10:38:31 +01:00
nds32_v2.h
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nds32_v3.c openocd: fix simple cases of Yoda condition 2021-07-20 14:55:24 +01:00
nds32_v3.h
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nds32_v3_common.c openocd: fix Yoda conditions with checkpatch 2021-07-24 10:38:31 +01:00
nds32_v3_common.h
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nds32_v3m.c openocd: fix simple cases of Yoda condition 2021-07-20 14:55:24 +01:00
nds32_v3m.h
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quark_d20xx.c openocd: fix simple cases of NULL comparison 2021-07-24 10:37:49 +01:00
quark_x10xx.c
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register.c target/register: Minor code cleanup 2021-06-18 23:14:09 +01:00
register.h Cleanup of config/includes. 2021-05-01 14:35:09 +01:00
rtt.c Add initial RTT support 2020-12-02 23:15:52 +00:00
rtt.h Add initial RTT support 2020-12-02 23:15:52 +00:00
semihosting_common.c openocd: remove NULL comparisons with checkpatch [1/2] 2021-07-24 10:38:00 +01:00
semihosting_common.h Cleanup of config/includes. 2021-05-01 14:35:09 +01:00
smp.c openocd: remove last NULL comparisons 2021-09-18 15:22:30 +00:00
smp.h openocd: fix simple cases of NULL comparison 2021-07-24 10:37:49 +01:00
startup.tcl target/startup.tcl: Do not use 'Yoda conditions' 2021-06-04 17:46:48 +01:00
stm8.c target/stm8: Remove unused member 'stm8_common' 2021-07-02 17:12:38 +01:00
stm8.h target/stm8: Make 'stm8_command_handlers' static 2021-05-08 09:49:32 +01:00
target.c target: reset target examined flag if target::examine() fails 2021-10-02 13:15:57 +00:00
target.h Call poll at a fixed interval. 2021-07-31 10:08:47 +01:00
target_request.c openocd: manually remove NULL comparisons 2021-07-24 10:38:19 +01:00
target_request.h
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target_type.h helper: Remove src/helper from include dirs 2021-10-02 13:18:15 +00:00
testee.c
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trace.c target: avoid checking for non NULL pointer to free it 2020-09-05 20:47:11 +01:00
trace.h Cleanup of config/includes. 2021-05-01 14:35:09 +01:00
x86_32_common.c openocd: remove NULL comparisons with checkpatch [1/2] 2021-07-24 10:38:00 +01:00
x86_32_common.h
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xscale.c openocd: fix simple cases of NULL comparison 2021-07-24 10:37:49 +01:00
xscale.h
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