On 05.05.2011, at 11:56, Peter Maydell wrote: > On 5 May 2011 09:23, Ben Leslie <be...@benno.id.au> wrote: >> FWIW, the reason why I'm not using -kernel is that the current >> way the armv7m code works, it expects the provided kernel to >> be a full flash image including appropriate vector table, whereas >> right now I just want to debug some stand-alone code, not the full >> system, which the above gdb approach works perfectly for. > > It would probably be better for the -kernel option to honour the > entry point in the ELF file rather than insisting on full reset > (and to try to load the reset SP from the vector table but not > insist on that working). That is, we should support both "load > this ELF image which is a full system image with a vector table" > and "load this ELF image which is just a bare-metal (possibly > semihosting) application". > > The combination of v7M reset with image loading and the possibility > of a debugger altering the pc/sp while the core is in reset is a bit > complicated, though :-) > > As an aside: I think QEMU should have an option which is "just > load a plain ELF or raw binary, with no funny Linux-kernel-specific > behaviour" rather than overloading -kernel to mean "if it's a > raw image it's Linux and if it's an ELF file it's not".
Traditionally, -bios has been that one. -kernel is more of a real bootloader replacement, including all the weirdness a bootloader does :). Alex
