diff options
| -rw-r--r-- | sys/arm64/arm64/db_interface.c | 12 |
1 files changed, 9 insertions, 3 deletions
diff --git a/sys/arm64/arm64/db_interface.c b/sys/arm64/arm64/db_interface.c index 8d97ab46a837..0b1c58ca88a0 100644 --- a/sys/arm64/arm64/db_interface.c +++ b/sys/arm64/arm64/db_interface.c @@ -124,14 +124,20 @@ db_read_bytes(vm_offset_t addr, size_t size, char *data) if (ret == 0) { src = (const char *)addr; + + /* + * Perform a native-sized memory access, if possible. This + * enables reading from MMIO devices that don't support single + * byte access. + */ if (size == 8 && (addr & 7) == 0) { - tmp64 = *((const int *)src); + tmp64 = *((const uint64_t *)src); src = (const char *)&tmp64; } else if (size == 4 && (addr & 3) == 0) { - tmp32 = *((const int *)src); + tmp32 = *((const uint32_t *)src); src = (const char *)&tmp32; } else if (size == 2 && (addr & 1) == 0) { - tmp16 = *((const short *)src); + tmp16 = *((const uint16_t *)src); src = (const char *)&tmp16; } while (size-- > 0) |