protos/multiboot2: use signed integers for relocation
diff --git a/common/protos/multiboot2.c b/common/protos/multiboot2.c
index 4d059206..49f99ca0 100644
--- a/common/protos/multiboot2.c
+++ b/common/protos/multiboot2.c
@@ -314,24 +314,24 @@ noreturn void multiboot2_load(char *config, char* cmdline) {
}
}
- uint64_t reloc_slide = 0;
+ int64_t reloc_slide = 0;
if (has_reloc_header) {
bool reloc_ascend;
- uint64_t relocated_base;
+ int64_t relocated_base;
switch (reloc_tag.preference) {
default:
case 0: case 1: // Prefer lowest to highest
reloc_ascend = true;
- relocated_base = ALIGN_UP(reloc_tag.min_addr, reloc_tag.align);
+ relocated_base = (int64_t)ALIGN_UP(reloc_tag.min_addr, reloc_tag.align);
if (relocated_base + ranges->length > reloc_tag.max_addr) {
goto reloc_fail;
}
break;
case 2: // Prefer highest to lowest
reloc_ascend = false;
- relocated_base = ALIGN_DOWN(reloc_tag.max_addr - ranges->length, reloc_tag.align);
+ relocated_base = (int64_t)ALIGN_DOWN(reloc_tag.max_addr - ranges->length, reloc_tag.align);
if (relocated_base < reloc_tag.min_addr) {
goto reloc_fail;
}
