JFíla: Pokračování s GDB

C:\Users\Jenda\Documents\ARM_GCC_Tools\bin>arm-none-eabi-gdb.exe "C:\Users\Jenda\Documents\STM32\STM32L1\Debug test\Debug\Debug test.elf"

C:\Users\Jenda\Documents\ARM_GCC_Tools\bin\arm-none-eabi-gdb.exe: warning: Couldn't determine a path for the index cache directory.

GNU gdb (GNU Tools for Arm Embedded Processors 8-2018-q4-major) 8.2.50.20181213-git

License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>

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Type "show copying" and "show warranty" for details.

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Type "show configuration" for configuration details.

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Reading symbols from C:\Users\Jenda\Documents\STM32\STM32L1\Debug test\Debug\Debug test.elf...

(gdb) target remote localhost:3333 # připojení k OpenOCD

Remote debugging using localhost:3333

0x00000000 in ?? ()

(gdb) load # nahrání proramu na MCU

Loading section .isr_vector, size 0x13c lma 0x8000000

Loading section .text, size 0x1474 lma 0x800013c

Loading section .rodata, size 0x1c lma 0x80015b0

Loading section .init_array, size 0x4 lma 0x80015cc

Loading section .fini_array, size 0x4 lma 0x80015d0

Loading section .data, size 0xc lma 0x80015d4

Start address 0x80014f4, load size 5600

Transfer rate: 5 KB/sec, 933 bytes/write.

(gdb) monitor reset halt # zastavení MCU

Unable to match requested speed 300 kHz, using 240 kHz

adapter speed: 240 kHz

target halted due to debug-request, current mode: Thread

xPSR: 0x01000000 pc: 0x080014f4 msp: 0x20004000

(gdb) l # zobrazení zdrojového kódu

warning: Source file is more recent than executable.

62 /**

63 * @brief The application entry point.

64 * @retval int

65 */

66 int main(void)

67 {

68 /* USER CODE BEGIN 1 */

70 /* USER CODE END 1 */

(gdb) l 95 # zobrazení zdrojového kódu od řádky 85

90 MX_GPIO_Init();

91 /* USER CODE BEGIN 2 */

92 volatile char array[10];

93 array[0] = 'a';

94 array[1] = 'b';

95 //array[25] = 'x';

96 array[2] = 'c';

97 array[3] = 'd';

99 for (int i = 8; i<10; i++) array[i] = i;

(gdb) b 97 # přidání breakpointu na řádek 97

Breakpoint 1 at 0x8001242: file ..\Src\main.c, line 97.

(gdb) c # pokračování běhu programu

Continuing.

Note: automatically using hardware breakpoints for read-only addresses.

Breakpoint 1, main () at ..\Src\main.c:97 # běh se zastavil na bteakpointu

97 array[3] = 'd';

(gdb) c

Continuing.

Program received signal SIGINT, Interrupt.

HAL_GPIO_ReadPin (GPIOx=0x40020000, GPIO_Pin=1) at ..\Drivers\STM32L1xx_HAL_Driver\Src\stm32l1xx_hal_gpio.c:401

401 }

(gdb) c

Continuing.

Program received signal SIGINT, Interrupt.

0x0800076e in HAL_GPIO_ReadPin (GPIOx=0x40020000, GPIO_Pin=1) at ..\Drivers\STM32L1xx_HAL_Driver\Src\stm32l1xx_hal_gpio.c:392

392 if ((GPIOx->IDR & GPIO_Pin) != (uint32_t)GPIO_PIN_RESET)

(gdb) c

Continuing.

Program received signal SIGINT, Interrupt.

0x08000764 in HAL_GPIO_ReadPin (GPIOx=0x40020000, GPIO_Pin=1) at ..\Drivers\STM32L1xx_HAL_Driver\Src\stm32l1xx_hal_gpio.c:386

386 {

(gdb) c

Continuing.

Program received signal SIGINT, Interrupt.

0x08000782 in HAL_GPIO_ReadPin (GPIOx=0x40020000, GPIO_Pin=1) at ..\Drivers\STM32L1xx_HAL_Driver\Src\stm32l1xx_hal_gpio.c:401

401 }

(gdb) disas main # disassemblování funkce main

Dump of assembler code for function main:

0x08001224 <+0>: push {r7, lr}

0x08001226 <+2>: sub sp, #16

0x08001228 <+4>: add r7, sp, #0

0x0800122a <+6>: bl 0x800017c <HAL_Init>

0x0800122e <+10>: bl 0x80012a0 <SystemClock_Config>

0x08001232 <+14>: bl 0x800132c <MX_GPIO_Init>

0x08001236 <+18>: movs r3, #97 ; 0x61

0x08001238 <+20>: strb r3, [r7, #0]

0x0800123a <+22>: movs r3, #98 ; 0x62

0x0800123c <+24>: strb r3, [r7, #1]

0x0800123e <+26>: movs r3, #99 ; 0x63

0x08001240 <+28>: strb r3, [r7, #2]

=> 0x08001242 <+30>: movs r3, #100 ; 0x64

0x08001244 <+32>: strb r3, [r7, #3]

0x08001246 <+34>: movs r3, #8

0x08001248 <+36>: str r3, [r7, #12]

0x0800124a <+38>: b.n 0x8001260 <main+60>

0x0800124c <+40>: ldr r3, [r7, #12]

0x0800124e <+42>: uxtb r1, r3

0x08001250 <+44>: mov r2, r7

0x08001252 <+46>: ldr r3, [r7, #12]

0x08001254 <+48>: add r3, r2

0x08001256 <+50>: mov r2, r1

0x08001258 <+52>: strb r2, [r3, #0]

0x0800125a <+54>: ldr r3, [r7, #12]

0x0800125c <+56>: adds r3, #1

0x0800125e <+58>: str r3, [r7, #12]

0x08001260 <+60>: ldr r3, [r7, #12]

0x08001262 <+62>: cmp r3, #11

0x08001264 <+64>: ble.n 0x800124c <main+40>

0x08001266 <+66>: movs r1, #1

0x08001268 <+68>: ldr r0, [pc, #44] ; (0x8001298 <main+116>)

0x0800126a <+70>: bl 0x800075c <HAL_GPIO_ReadPin>

0x0800126e <+74>: mov r3, r0

0x08001270 <+76>: cmp r3, #1

0x08001272 <+78>: bne.n 0x8001266 <main+66>

0x08001274 <+80>: movs r2, #0

0x08001276 <+82>: movs r1, #64 ; 0x40

0x08001278 <+84>: ldr r0, [pc, #32] ; (0x800129c <main+120>)

0x0800127a <+86>: bl 0x800078a <HAL_GPIO_WritePin>

0x0800127e <+90>: movs r0, #200 ; 0xc8

0x08001280 <+92>: bl 0x8000258 <HAL_Delay>

0x08001284 <+96>: movs r2, #1

0x08001286 <+98>: movs r1, #64 ; 0x40

0x08001288 <+100>: ldr r0, [pc, #16] ; (0x800129c <main+120>)

0x0800128a <+102>: bl 0x800078a <HAL_GPIO_WritePin>

0x0800128e <+106>: movs r0, #200 ; 0xc8

--Type <RET> for more, q to quit, c to continue without paging--

0x08001290 <+108>: bl 0x8000258 <HAL_Delay>

0x08001294 <+112>: b.n 0x8001266 <main+66>

0x08001296 <+114>: nop

0x08001298 <+116>: movs r0, r0

0x0800129a <+118>: ands r2, r0

0x0800129c <+120>: lsls r0, r0, #16

0x0800129e <+122>: ands r2, r0

End of assembler dump.
(gdb) jump *0x80000 # spuštění kódu od adresy 0x80000

Continuing at 0x80000.

(gdb) i b # výpis aktivních breakpointů

Num Type Disp Enb Address What

1 breakpoint keep y 0x08001236 in main at ..\Src\main.c:93

breakpoint already hit 1 time

2 breakpoint keep y 0x08001242 in main at ..\Src\main.c:97

breakpoint already hit 1 time

(gdb) c

Continuing.

Program received signal SIGINT, Interrupt.

0x08001270 in main () at ..\Src\main.c:110

110 /* USER CODE END WHILE */

(gdb) q

A debugging session is active.

Inferior 1 [Remote target] will be detached.

Quit anyway? (y or n) y

Další zajímavostí je možnost tvorby vlastního skriptu:
(gdb) define hexdump
Type commands for definition of "hexdump".
End with a line saying just "end".
>dump binary memory dump.bin $arg0 $arg0+$arg1
>shell hexdump dump.bin -C
>end
(gdb)
(gdb) hexdump 0x80000 0x100
00000000 a1 00 38 d5 21 04 40 92 61 00 00 b4 5f 20 03 d5 |..8.!.@.a..._ ..|
00000010 ff ff ff 17 61 01 00 58 3f 00 00 91 61 01 00 58 |....a..X?...a..X|
00000020 e2 00 00 18 82 00 00 34 3f 84 00 f8 42 04 00 51 |.......4?...B..Q|
00000030 a2 ff ff 35 07 00 00 94 f5 ff ff 17 02 00 00 00 |...5............|
00000040 00 00 08 00 00 00 00 00 60 02 08 00 00 00 00 00 |........`.......|
00000050 fd 7b bf a9 fd 03 00 91 08 00 00 94 00 00 00 90 |.{..............|
00000060 00 a0 08 91 5b 00 00 94 00 00 00 90 00 80 09 91 |....[...........|
00000070 58 00 00 94 00 00 00 14 f3 0f 1f f8 80 00 8a d2 |X...............|
00000080 20 e4 a7 f2 01 00 40 b9 80 00 8a d2 20 e4 a7 f2 | .....@..... ...|
00000090 21 00 00 32 01 00 00 b9 00 0c 8a d2 20 e4 a7 f2 |!..2........ ...|
000000a0 1f 00 00 b9 80 09 8a d2 20 e4 a7 f2 61 00 80 52 |........ ...a..R|
000000b0 01 00 00 b9 00 0a 8a d2 20 e4 a7 f2 1f 00 00 b9 |........ .......|
000000c0 80 08 8a d2 20 e4 a7 f2 1f 00 00 b9 00 09 8a d2 |.... ...........|
000000d0 20 e4 a7 f2 c1 18 80 52 01 00 00 b9 00 0d 8a d2 | ......R........|
000000e0 20 e4 a7 f2 c1 21 80 52 01 00 00 b9 80 00 80 d2 | ....!.R........|
000000f0 00 e4 a7 f2 13 00 40 b9 73 66 0e 12 00 00 84 52 |......@.sf.....R|
00000100

https://stackoverflow.com/questions/9233095/memory-dump-formatted-like-xxd-from-gdb

JFíla

sobota 11. května 2019

Pokračování s GDB

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