Re: [Qemu-devel] [PATCH] hw/core/loader: do not check for regions overlap

[Hua Yanghao]

On Mon, Jul 24, 2017 at 11:21 PM, Peter Maydell
<address@hidden> wrote:
> On 24 July 2017 at 21:03, Hua Yanghao <address@hidden> wrote:
>> Sounds good PPM! currently I am working around this by
>> objcopy a pure binary and it looks like qemu-system-arm is
>> loading a binary at loader address + 0x10000. From man page
>> it claims it also supports multiboot image which I thought I could
>> remove this loader address + 0x10000 limiation however with
>> no luck. but the binary works pretty fine though at the fixed address.
>> not as convenient as elf image which I can run from any address.
>
> If you give -kernel on ARM (non-M-profile) systems something
> that isn't an ELF file this means "I am a Linux kernel and
> want the calling convention documented for the kernel" (which
> includes that load address, among other things). If you're
> not a Linux kernel then don't do that.
>
> You probably want the "-device loader" documented in
> docs/generic-loader.txt, which is (as the name suggests)
> a generic way to load an arbitrary binary into memory,
> and lets you specify whatever load address you want.
>

It works like a charm, thanks PPM. I think this already solves my
problem for using elf, now I just use objcopied binary. However
if qemu could support elf type with overlapping segments that is
even better. ;-)