The trick is to understand the code in grub itself.
In particular in grub/stage2/boot.c,
look at the function load_image().
....
else if (flags & MULTIBOOT_AOUT_KLUDGE)
{
pu.mb = (struct multiboot_header *) (buffer + i);
entry_addr = (entry_func) pu.mb->entry_addr;
cur_addr = pu.mb->load_addr;
/* first offset into file */
grub_seek (i - (pu.mb->header_addr - cur_addr));
/* If the load end address is zero, load the whole contents. */
if (! pu.mb->load_end_addr)
pu.mb->load_end_addr = cur_addr + filemax;
....
Solaris 64 bit goes down this path to get
grub to load any kind of file (like elf64 unix) into
memory as a kernel and then just jump into it.
For Solaris (since build 57) the entry point is in the
32 bit dboot code.
Joe
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