diff options
Diffstat (limited to 'laden/laden.h')
| -rw-r--r-- | laden/laden.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/laden/laden.h b/laden/laden.h index 1f9ad8c..dd0b832 100644 --- a/laden/laden.h +++ b/laden/laden.h @@ -23,6 +23,7 @@ #endif #include <string.h> +#include <assert.h> #include <l4.h> @@ -62,10 +63,15 @@ extern l4_word_t boot_info; extern l4_memory_desc_t memory_map[MEMORY_MAP_MAX]; extern l4_word_t memory_map_size; +/* START identifies the start of a region and must be 1k aligned. END + is the last byte of the region. END + 1 must be 1k aligned. */ #define add_memory_map(start, end, mtype, msubtype) \ ({ \ if (memory_map_size == MEMORY_MAP_MAX) \ panic ("No more memory descriptor slots available.\n"); \ + /* Make sure START and END are 1k aligned. */ \ + assert (((start) & ((1 << 10) - 1)) == 0); \ + assert (((end) & ((1 << 10) - 1)) == (1 << 10) - 1); \ memory_map[memory_map_size].low = (start) >> 10; \ memory_map[memory_map_size].high = (end) >> 10; \ memory_map[memory_map_size].virtual = 0; \ |