Function mips_postboot_fixup

freebsd/mips/mips/machdep.c:384–453

* Fix kernel_kseg0_end address in case trampoline placed debug sympols * data there */

 * data there
 */
void
mips_postboot_fixup(void)
{
	/*
	 * We store u_long sized objects into the reload area, so the array
	 * must be so aligned. The standard allows any alignment for char data.
	 */
	_Alignas(_Alignof(u_long)) static char fake_preload[256];
	caddr_t preload_ptr = (caddr_t)&fake_preload[0];
	size_t size = 0;

#define PRELOAD_PUSH_VALUE(type, value) do {		\
	*(type *)(preload_ptr + size) = (value);	\
	size += sizeof(type);				\
} while (0);

	/*
	 * Provide kernel module file information
	 */
	PRELOAD_PUSH_VALUE(uint32_t, MODINFO_NAME);
	PRELOAD_PUSH_VALUE(uint32_t, strlen("kernel") + 1);
	strcpy((char*)(preload_ptr + size), "kernel");
	size += strlen("kernel") + 1;
	size = roundup(size, sizeof(u_long));

	PRELOAD_PUSH_VALUE(uint32_t, MODINFO_TYPE);
	PRELOAD_PUSH_VALUE(uint32_t, strlen("elf kernel") + 1);
	strcpy((char*)(preload_ptr + size), "elf kernel");
	size += strlen("elf kernel") + 1;
	size = roundup(size, sizeof(u_long));

	PRELOAD_PUSH_VALUE(uint32_t, MODINFO_ADDR);
	PRELOAD_PUSH_VALUE(uint32_t, sizeof(vm_offset_t));
	PRELOAD_PUSH_VALUE(vm_offset_t, KERNLOADADDR);
	size = roundup(size, sizeof(u_long));

	PRELOAD_PUSH_VALUE(uint32_t, MODINFO_SIZE);
	PRELOAD_PUSH_VALUE(uint32_t, sizeof(size_t));
	PRELOAD_PUSH_VALUE(size_t, (size_t)&end - KERNLOADADDR);
	size = roundup(size, sizeof(u_long));

	/* End marker */
	PRELOAD_PUSH_VALUE(uint32_t, 0);
	PRELOAD_PUSH_VALUE(uint32_t, 0);

#undef	PRELOAD_PUSH_VALUE

	KASSERT((size < sizeof(fake_preload)),
		("fake preload size is more thenallocated"));

	preload_metadata = (void *)fake_preload;

#ifdef DDB
	Elf_Size *trampoline_data = (Elf_Size*)kernel_kseg0_end;
	Elf_Size symtabsize = 0;
	vm_offset_t ksym_start;
	vm_offset_t ksym_end;