sobota 11. května 2019

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
Copyright (C) 2018 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
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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
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 */
69
70        /* USER CODE END 1 */
71
(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';
98
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) 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

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