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توضیحات

Python module for GDB to analyze ARM core registers

ویژگی	مقدار
سیستم عامل	-
نام فایل	arm-gdb-0.9.8
نام	arm-gdb
نسخه کتابخانه	0.9.8
نگهدارنده	[]
ایمیل نگهدارنده	[]
نویسنده	-
ایمیل نویسنده	Max Sikström <max@pengi.se>
آدرس صفحه اصلی	-
آدرس اینترنتی	https://pypi.org/project/arm-gdb/
مجوز	Copyright (c) 2023 Max Sikström Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

arm-gdb ======= Tools for inspecting ARM Cortex-M registers within GDB Currently supported: * SCB - System Control Block * SysTick * NVIC - Nested Vectored Interrupt Controller Install ------- ``` pip install arm-gdb ``` Run --- Start GDB and run ``` python import arm_gdb ``` Or add that line to `~/.gdbinit` Usage ----- Use `help arm` command, or individual subcommands, i.e. `help arm scb` ``` (gdb) help arm Tools for debugging ARM Cortex-M - series CPUs List of arm subcommands: arm fpu -- Dump of ARM Cortex-M FPU - SCB registers for the FP extension arm inspect -- Dump register values from device peripheral arm list -- List peripherals and registers from device arm loaddb -- Load an SVD file from resitry arm loadfile -- Load an SVD file from file arm nvic -- Print current status of NVIC arm scb -- Dump of ARM Cortex-M SCB - System Control Block arm systick -- Dump of ARM Cortex-M SysTick block Type "help arm" followed by arm subcommand name for full documentation. Type "apropos word" to search for commands related to "word". Type "apropos -v word" for full documentation of commands related to "word". Command name abbreviations are allowed if unambiguous. ``` System Control Block -------------------- ``` (gdb) help arm scb Dump of ARM Cortex-M SCB - System Control Block Usage: arm scb [/habf] Modifier /h provides descriptions of names where available Modifier /a Print all fields, including default values Modifier /b prints bitmasks in binary instead of hex Modifier /f force printing fields from all Cortex-M models ``` Dump of ARM System Control Block, with bitmask descriptions ``` (gdb) arm scb /h SCB for model M4 SCB registers: CPUID = 410fc241 // CPUID Base Register Implementer 41...... - ARM // Implementer code assigned by Arm Architecture ...f.... - f // constant - 1111 PartNo ....c24. - Cortex-M4 Revision .......1 - 1 ICSR = 00000000 // Interrupt Control and State Register VTOR = 00000000 // Vector Table Offset Register AIRCR = fa050000 // Application Interrupt and Reset Control Register ENDIANNESS ....0... - Little Endian SCR = 00000000 // System Control Register CCR = 00000200 // Configuration and Control Register SHPR1 = 00000000 // System Handler Priority Register 1 SHPR2 = 80000000 // System Handler Priority Register 2 PRI_11 - SVCall 80...... - 80 // Priority of system handler 11, SVCall. SHPR3 = 00e00000 // System Handler Priority Register 3 PRI_14 - PendSV ..e0.... - e0 // Priority of system handler 14, PendSV. SHCSR = 00070000 // System Handler Control and State Register USGFAULTENA ...4.... - 1 // Indicates if UsageFault is enabled. BUSFAULTENA ...2.... - 1 // Indicates if BusFault is enabled. MEMFAULTENA ...1.... - 1 // Indicates if MemFault is enabled. CFSR = 00000000 // Configurable Fault Status Register MMFSR ......00 - 00 // MemManage Fault Status Register BFSR ....00.. - 00 // BusFault Status Register UFSR 0000.... - 0000 // UsageFault Status Register HFSR = 00000000 // HardFault Status Register DFSR = 00000001 // Debug Fault Status Register HALTED .......1 - Halt request debug event // Indicates a debug event generated by either C_HALT, C_STEP or DEMCR.MON_STEP MMFAR = e000edf8 // MemManage Fault Address Register BFAR = e000edf8 // BusFault Address Register AFSR = 00000000 // Auxiliary Fault Status Register CPACR = 00f00000 // Coprocessor Access Control Register AUX registers: ICTR = 00000001 // Interrupt Controller Type Register INTLINESNUM .......1 - 64 vectors // The total number of interrupt lines supported, as 32*(1+N) ACTLR - M4 = 00000000 // Auxiliary Control Register - Cortex M4 ``` SysTick ------- ``` (gdb) help arm systick Dump of ARM Cortex-M SysTick block Usage: arm systick [/hab] Modifier /h provides descriptions of names where available Modifier /a Print all fields, including default values Modifier /b prints bitmasks in binary instead of hex ``` Dump of ARM SysTick ``` (gdb) arm systick SYST_CSR = 00000004 CLKSOURCE .......4 - 1 SYST_RVR = 00000000 SYST_CVR = 00000000 SYST_CALIB = c0000000 SKEW 4....... - 1 NOREF 8....... - 1 ``` ... or with descriptions ``` (gdb) arm systick /h SYST_CSR = 00000004 // SysTick Control and Status Register CLKSOURCE .......4 - 1 SYST_RVR = 00000000 // SysTick Reload Value Register SYST_CVR = 00000000 // SysTick Current Value Register SYST_CALIB = c0000000 // SysTick Calibration Value Register SKEW 4....... - 1 NOREF 8....... - 1 ``` ... or with bitmasks in binary ``` (gdb) arm systick /b SYST_CSR = 00000000000000000000000000000100 CLKSOURCE .............................1.. - 1 SYST_RVR = 00000000000000000000000000000000 SYST_CVR = 00000000000000000000000000000000 SYST_CALIB = 11000000000000000000000000000000 SKEW .1.............................. - 1 NOREF 1............................... - 1 ``` Print out all fields, even those with default values: ``` (gdb) arm systick /ab SYST_CSR = 00000000000000000000000000000100 ENABLE ...............................0 - 0 TICKINT ..............................0. - 0 CLKSOURCE .............................1.. - 1 COUNTFLAG ...............0................ - 0 SYST_RVR = 00000000000000000000000000000000 RELOAD ........000000000000000000000000 - 000000 SYST_CVR = 00000000000000000000000000000000 CURRENT ........000000000000000000000000 - 000000 SYST_CALIB = 11000000000000000000000000000000 TENMS .......0000000000000000000000000 - 0000000 SKEW .1.............................. - 1 NOREF 1............................... - 1 ``` FPU --- ``` (gdb) help arm fpu Dump of ARM Cortex-M FPU - SCB registers for the FP extension Usage: arm fpu [/hab] Modifier /h provides descriptions of names where available Modifier /a Print all fields, including default values Modifier /b prints bitmasks in binary instead of hex ``` ``` (gdb) arm fpu/ab SCB FP registers: FPCCR = 11000000000000000000000000000000 ASPEN 1............................... - 1 LSPEN .1.............................. - 1 MONRDY .......................0........ - 0 BFRDY .........................0...... - 0 MMRDY ..........................0..... - 0 HFRDY ...........................0.... - 0 THREAD ............................0... - 0 USER ..............................0. - 0 LSPACT ...............................0 - 0 FPCAR = 00000000000000000000000000000000 FPCAR ..0000000000000000000000000000.. - 0000000 FPDSCR = 00000000000000000000000000000000 AHP .....0.......................... - 0 DN ......0......................... - 0 FZ .......0........................ - 0 RMode ........00...................... - 0 MVFR0 = 00010000000100010000000000100001 FP rounding modes 0001............................ - All rounding modes supported. Short vectors ....0000........................ - Not supported Square root ........0001.................... - Supported Divide ............0001................ - Supported FP exception trapping ................0000............ - Not supported Double-precision ....................0000........ - Not supported Single-precision ........................0010.... - Supported. A_SIMD registers ............................0001 - Supported, 16 x 64-bit registers. MVFR1 = 00010001000000000000000000010001 FP fused MAC 0001............................ - Supported FP HPFP ....0001........................ - Supported half-single D_NaN mode ........................0001.... - Supported FtZ mode ............................0001 - Hardware supports full denormalized number arithmetic. MVFR2 = 00000000000000000000000000000000 VFP_Misc ........................0000.... - No support for miscellaneous features. ``` NVIC - Nested Vectored Interrupt Controller ------------------------------------------- Dump of NVIC list, listing all enabled interrupt handlers, in a redirected interrupt vector ``` (gdb) help arm nvic Print current status of NVIC Usage: arm nvic [/a] [<ISR vector address>] Modifier /a lists all interrupt vectors, not only enabled <ISR vector address> - optional. Specifies base address of ISR vector. If not specified, it will be resolved via SCB->VTOR, which is valid in most cases. Examples: arm nvic /a - list all ISRs from -15 to to maximum arm nvic &__isr_vector - Custom ISR vector, useful when proxying interrupts via another system, like the softdevice on nRF52 ``` Default, it checks for functions in the active interrupt vector given VTOR register. But in for example nRF52840 using their SoftDevice, the interrupts are forwarded in software to the application for SoftDevice to override. ``` (gdb) arm nvic &__isr_vector IRQn Prio Handler -15 0 en 0002a749 Reset - -14 0 en 0002a771 NMI - -13 0 en 0002bc55 HardFault HardFault_Handler -12 0 en 0002bc5d MemManage -11 0 en 0002bc59 BusFault -10 0 en 0002bc61 UsageFault -5 80 en 00027201 SVC SVC_Handler -2 e0 en 00027231 PendSV PendSV_Handler 0 80 en 00027715 POWER_CLOCK_IRQHandler 2 40 en 0002c409 UARTE0_UART0_IRQHandler 11 0 en 0002a783 - 17 c0 en pend 0002bd4d RTC1_IRQHandler 21 40 en 0002bd55 SWI1_EGU1_IRQHandler 22 c0 en 000279e9 SWI2_EGU2_IRQHandler 23 a0 en 0002c035 SWI3_EGU3_IRQHandler 25 80 en 0002a783 - 32 20 en 0002a783 - ``` SVD - Implementation specific peripherals ----------------------------------------- ``` (gdb) help arm inspect Dump register values from device peripheral Usage: arm inspect [/hab] <device> <peripheral> Modifier /h provides descriptions of names where available Modifier /a Print all fields, including default values Modifier /b prints bitmasks in binary instead of hex <device> - Name of loaded device. See `help arm loadfile` <peripheral> - Name of peripheral Exmaple: arm inspect nrf52840 UARTE0 ``` ``` (gdb) help arm loaddb Load an SVD file from resitry Usage: arm loaddb <device> <vendor> <filename> <device> - Name to refer to the device in commands like `arm inspect` <vendor> - Device vendor <filename> - SVD file within registry Load file from cmsis-svd package registry. Many common devices are available. If not available, you can load a custom svd file using `arm loadfile` This command can preferrably be added to .gdbinit for easy access of devices ``` ``` (gdb) help arm loadfile Load an SVD file from file Usage: arm loadfile <device> <filename> <device> - Name to refer to the device in commands like `arm inspect` <filename> - SVD file to load This command can preferrably be added to .gdbinit for easy access of devices ``` ``` (gdb) help arm list List peripherals and registers from device Usage: arm list Lists loaded devices Usage: arm list <device> List peripherals from a device Usage: arm list <device> <peripheral> List registers from a peripheral Examples: arm list arm list nrf52840 arm list nrf52840 UARTE0 ``` To use an SVD file from cmsis-svd package database, use: ``` (gdb) arm loaddb nrf Nordic nrf52.svd ``` This loads in the device description under a local name, in this case `nrf` for faster access in upcoming commands It is also possible to load custom svd files, in this case an stm32f7x7: ``` (gdb) arm loadfile stm32f7x7 /path/to/my/stm32f7x7.svd ``` To list peripherals in the loaded module, use: ``` (gdb) arm list nrf FICR @ 0x10000000 UICR @ 0x10001000 BPROT @ 0x40000000 POWER @ 0x40000000 ... ``` It is possible to inspect the values of the registers on the target ``` (gdb) arm inspect nrf52840 NVMC NVMC.READY = 00000001 READY .......1 - Ready NVMC.READYNEXT = 00000001 READYNEXT .......1 - Ready NVMC.CONFIG = 00000000 WEN .......0 - Ren NVMC.ERASEPAGE = 00000000 NVMC.ERASEPCR1 = 00000000 NVMC.ERASEALL = 00000000 ERASEALL .......0 - NoOperation NVMC.ERASEPCR0 = 00000000 NVMC.ERASEUICR = 00000000 ERASEUICR .......0 - NoOperation NVMC.ERASEPAGEPARTIAL = 00000000 NVMC.ERASEPAGEPARTIALCFG = 0000000a DURATION ......0a - 0a NVMC.ICACHECNF = 00000001 CACHEEN .......1 - Enabled CACHEPROFEN .....0.. - Disabled NVMC.IHIT = 00000000 NVMC.IMISS = 00000000 ```

نیازمندی

مقدار	نام
>=0.4	cmsis-svd

زبان مورد نیاز

مقدار	نام
>=3.6	Python

نحوه نصب

نصب پکیج whl arm-gdb-0.9.8:

pip install arm-gdb-0.9.8.whl

نصب پکیج tar.gz arm-gdb-0.9.8:

pip install arm-gdb-0.9.8.tar.gz