diff options
| author | Ian Lepore <ian@FreeBSD.org> | 2013-03-09 23:05:19 +0000 |
|---|---|---|
| committer | Ian Lepore <ian@FreeBSD.org> | 2013-03-09 23:05:19 +0000 |
| commit | dd9b8b36dd0138b6e942c3c3092c1af17705d08a (patch) | |
| tree | 26e3994542e0ed3cf8f45affe17174427c082458 /sys/boot/common/load_elf.c | |
| parent | 34496b53ee089ed438f1949b0643a02eab2c0fa4 (diff) | |
Notes
Diffstat (limited to 'sys/boot/common/load_elf.c')
| -rw-r--r-- | sys/boot/common/load_elf.c | 11 |
1 files changed, 6 insertions, 5 deletions
diff --git a/sys/boot/common/load_elf.c b/sys/boot/common/load_elf.c index 3a4152e7afb7..4a1896e678b9 100644 --- a/sys/boot/common/load_elf.c +++ b/sys/boot/common/load_elf.c @@ -297,15 +297,16 @@ __elfN(loadimage)(struct preloaded_file *fp, elf_file_t ef, u_int64_t off) * the MI code below uses the p_vaddr fields with an offset added for * loading (doing so is arguably wrong). To make loading work, we need * an offset that represents the difference between physical and virtual - * addressing. ARM kernels are always linked at 0xC0000000. Depending + * addressing. ARM kernels are always linked at 0xCnnnnnnn. Depending * on the headers, the offset value passed in may be physical or virtual * (because it typically comes from e_entry), but we always replace * whatever is passed in with the va<->pa offset. On the other hand, we - * only adjust the entry point if it's a virtual address to begin with. + * always remove the high-order part of the entry address whether it's + * physical or virtual, because it will be adjusted later for the actual + * physical entry point based on where the image gets loaded. */ - off = -0xc0000000u; - if ((ehdr->e_entry & 0xc0000000u) == 0xc0000000u) - ehdr->e_entry += off; + off = -0xc0000000; + ehdr->e_entry &= ~0xf0000000; #ifdef ELF_VERBOSE printf("ehdr->e_entry 0x%08x, va<->pa off %llx\n", ehdr->e_entry, off); #endif |
