[Debug opensbi] Using qemu+gdb to debug opensbi

[hptsf]

Hi,

building opensbi, and then starting system using qemu with -S -s params

in other terminal, riscv64_unknown_linux_gdb fw_payload.elf target remote :1234 b sbi_init c n will get tips as below, and can't stop on next line

[hptsf]

Anyone has any idea?

[alistair23]

Have you tried step instead of next?

[hptsf]

yes， step is ok， but is not what i want. Maybe step is too slow.

[Dunky-Z]

Maybe you can check if the GCC you use to compile and the GDB you use to debug are the same version. For example, I may have multi versions of the toolchain, sometimes mixing them.

Compile with riscv64-unknown-linux-gnu-gcc and debug with riscv64-unknown-linux-gnu-gcc may not be able to debug normally.

[lbmeng]

When you build the OpenSBI binary, you can pass "DEBUG=1" on the command line which generates debugger-friendly bits.