Break at address "0xXXXXXX" with no debug information available, or outside of program code
Configuration:
Using Nucleo-L476RG. Using GNU ARM Eclipse. I have generated a minimalist code from STM32CubeMX. I have flashed J-link driver in my on board ST-Link.
Have been trying to run debugger for my code but my program counter is not setting at main().Instead it fails to read a certain memory address. The error "Break at address "0xXXXXXXXX" with no debug information available, or outside of program code." appears.
I've included the screenshot and debugger log in which we can see the error.
Please help
IMAGES:
https://ibb.co/bBRHxn https://ibb.co/mGDKA7 https://ibb.co/mE4gOS https://ibb.co/fh5AHn https://ibb.co/jNFMOS https://ibb.co/ibmT3S https://ibb.co/gpJaiS https://ibb.co/jgaMOS
LOGS:
SEGGER J-Link GDB Server V6.30f Command Line Version
JLinkARM.dll V6.30f (DLL compiled Mar 2 2018 17:29:18)
Command line: -if swd -device STM32L476RG -endian little -speed 1000 -port 2331 -swoport 2332 -telnetport 2333 -vd -ir -localhostonly 1 -singlerun -strict -timeout 0 -nogui
-----GDB Server start settings-----
GDBInit file: none
GDB Server Listening port: 2331
SWO raw output listening port: 2332
Terminal I/O port: 2333
Accept remote connection: localhost only
Generate logfile: off
Verify download: on
Init regs on start: on
Silent mode: off
Single run mode: on
Target connection timeout: 0 ms
------J-Link related settings------
J-Link Host interface: USB
J-Link script: none
J-Link settings file: none
------Target related settings------
Target device: STM32L476RG
Target interface: SWD
Target interface speed: 1000kHz
Target endian: little
Connecting to J-Link...
J-Link is connected.
Firmware: J-Link STLink V21 compiled Jun 26 2017 10:35:16
Hardware: V1.00
S/N: 770526094
Checking target voltage...
Target voltage: 3.30 V
Listening on TCP/IP port 2331
Connecting to target...
WARNING: T-bit of XPSR is 0 but should be 1. Changed to 1.
Connected to target
Waiting for GDB connection...Connected to 127.0.0.1
Reading all registers
Read 4 bytes @ address 0x00000000 (Data = 0x4C05B510)
Read 2 bytes @ address 0x00000000 (Data = 0xB510)
Received monitor command: speed 1000
Target interface speed set to 1000 kHz
Received monitor command: clrbp
Received monitor command: reset
Resetting target
Received monitor command: halt
Halting target CPU...
...Target halted (PC = 0xB9337822)
Received monitor command: regs
R0 = 00000000, R1 = 00000000, R2 = 00000000, R3 = 00000000
R4 = 00000000, R5 = 00000000, R6 = 00000000, R7 = 00000000
R8 = 00000000, R9 = 00000000, R10= 00000000, R11= 00000000
R12= 00000000, R13= 4C05B510, MSP= 4C05B510, PSP= 00000000
R14(LR) = FFFFFFFF, R15(PC) = B9337822
XPSR 01000000, APSR 00000000, EPSR 01000000, IPSR 00000000
CFBP 00000000, CONTROL 00, FAULTMASK 00, BASEPRI 00, PRIMASK 00
Reading all registers
Received monitor command: speed auto
Select auto target interface speed (2000 kHz)
Received monitor command: flash breakpoints 1
Flash breakpoints enabled
Received monitor command: semihosting enable
Semi-hosting enabled (Handle on BKPT)
Received monitor command: semihosting IOClient 1
Semihosting I/O set to TELNET Client
Received monitor command: SWO DisableTarget 0xFFFFFFFF
SWO disabled successfully.
Received monitor command: SWO EnableTarget 0 0 0x1 0
SWO enabled successfully.
Read 4 bytes @ address 0xB9337822 (Data = 0x00000000)
Read 2 bytes @ address 0xB9337822 (Data = 0x0000)
Downloading 88 bytes @ address 0x08000000 - Verified OK
Downloading 8 bytes @ address 0x08000058 - Verified OK
Downloading 8 bytes @ address 0x08000060 - Verified OK
Comparing flash [....................] Done.
Verifying flash [....................] Done.
Writing register (PC = 0x08000000)
Read 4 bytes @ address 0x08000000 (Data = 0x4C05B510)
Read 2 bytes @ address 0x08000000 (Data = 0xB510)
Received monitor command: clrbp
Received monitor command: reset
Resetting target
Received monitor command: halt
Halting target CPU...
...Target halted (PC = 0xB9337822)
Received monitor command: regs
R0 = 00000000, R1 = 00000000, R2 = 00000000, R3 = 00000000
R4 = 00000000, R5 = 00000000, R6 = 00000000, R7 = 00000000
R8 = 00000000, R9 = 00000000, R10= 00000000, R11= 00000000
R12= 00000000, R13= 4C05B510, MSP= 4C05B510, PSP= 00000000
R14(LR) = FFFFFFFF, R15(PC) = B9337822
XPSR 01000000, APSR 00000000, EPSR 01000000, IPSR 00000000
CFBP 00000000, CONTROL 00, FAULTMASK 00, BASEPRI 00, PRIMASK 00
Reading all registers
Starting target CPU...
WARNING: T-bit of XPSR is 0 but should be 1. Changed to 1.
...Target halted (DBGRQ, PC = 0xF3AF4804)
Reading all registers
WARNING: Failed to read memory @ address 0xF3AF4804
WARNING: Failed to read memory @ address 0x4C05B50C
Reading 64 bytes @ address 0x4C05B500
WARNING: Failed to read memory @ address 0x4C05B500
WARNING: Failed to read memory @ address 0x4C05B508
Reading 64 bytes @ address 0x4C05B500
WARNING: Failed to read memory @ address 0x4C05B500
WARNING: Failed to read memory @ address 0x4C05B508
Reading 64 bytes @ address 0xF3AF4800
WARNING: Failed to read memory @ address 0xF3AF4800
WARNING: Failed to read memory @ address 0xF3AF4804
Reading 64 bytes @ address 0xF3AF4800
WARNING: Failed to read memory @ address 0xF3AF4800
WARNING: Failed to read memory @ address 0xF3AF4804
Reading 64 bytes @ address 0xF3AF4800
WARNING: Failed to read memory @ address 0xF3AF4800
WARNING: Failed to read memory @ address 0xF3AF4806
Answer
I encountered the same issue when using j-link to debug my Board(STM32F407ZG), after changing the startup_stm32f407xx.s into startup_stm32f407xx.S(with uppercase 's' ), the problem disappeared. The reason might be gcc handles .s and .S in different ways
Change your startup_xx.s file suffix to uppercase.