lxdream 0.9.1| filename | src/watch.c |
| changeset | 6:6e3663e58565 |
| prev | 2:42349f6ea216 |
| next | 480:d28c2992f5ee |
| author | nkeynes |
| date | Thu Dec 08 13:38:00 2005 +0000 (18 years ago) |
| permissions | -rw-r--r-- |
| last change | Generalise the core debug window to allow multiple instances. Add cpu description structure to define different cpus for use by the debug window, in preparation for ARM implementation |
| file | annotate | diff | log | raw |
| nkeynes@2 | 1 | #include <stdlib.h> |
| nkeynes@2 | 2 | #include "mem.h" |
| nkeynes@2 | 3 | |
| nkeynes@2 | 4 | struct watch_point {
|
| nkeynes@2 | 5 | uint32_t start; |
| nkeynes@2 | 6 | uint32_t end; |
| nkeynes@2 | 7 | int flags; |
| nkeynes@2 | 8 | }; |
| nkeynes@2 | 9 | |
| nkeynes@2 | 10 | struct watch_point *watch_arr = NULL; |
| nkeynes@2 | 11 | int watch_count = 0, watch_capacity = 0; |
| nkeynes@2 | 12 | |
| nkeynes@2 | 13 | |
| nkeynes@2 | 14 | watch_point_t mem_new_watch( uint32_t start, uint32_t end, int flags ) |
| nkeynes@2 | 15 | {
|
| nkeynes@2 | 16 | int num; |
| nkeynes@2 | 17 | if( watch_arr == NULL ) {
|
| nkeynes@2 | 18 | watch_capacity = 10; |
| nkeynes@2 | 19 | watch_arr = calloc( sizeof(struct watch_point), watch_capacity ); |
| nkeynes@2 | 20 | num = 0; |
| nkeynes@2 | 21 | } else if( watch_count == watch_capacity ) {
|
| nkeynes@2 | 22 | struct watch_point *tmp = realloc( watch_arr, sizeof(struct watch_point) * watch_capacity * 2 ); |
| nkeynes@2 | 23 | if( tmp == NULL ) |
| nkeynes@2 | 24 | return NULL; |
| nkeynes@2 | 25 | watch_arr = tmp; |
| nkeynes@2 | 26 | memset( &watch_arr[watch_capacity], 0, sizeof( struct watch_point ) * watch_capacity ); |
| nkeynes@2 | 27 | num = watch_capacity; |
| nkeynes@2 | 28 | watch_capacity *= 2; |
| nkeynes@2 | 29 | } else {
|
| nkeynes@2 | 30 | for( num=0; num<watch_capacity; num++ ) {
|
| nkeynes@2 | 31 | if( watch_arr[num].flags == 0 ) |
| nkeynes@2 | 32 | break; |
| nkeynes@2 | 33 | } |
| nkeynes@2 | 34 | } |
| nkeynes@2 | 35 | watch_arr[num].start = start & 0x1FFFFFFF; |
| nkeynes@2 | 36 | watch_arr[num].end = end & 0x1FFFFFFF; |
| nkeynes@2 | 37 | watch_arr[num].flags = flags; |
| nkeynes@2 | 38 | watch_count++; |
| nkeynes@2 | 39 | return &watch_arr[num]; |
| nkeynes@2 | 40 | } |
| nkeynes@2 | 41 | |
| nkeynes@2 | 42 | void mem_delete_watch( watch_point_t watch ) |
| nkeynes@2 | 43 | {
|
| nkeynes@2 | 44 | if( watch_arr == NULL ) |
| nkeynes@2 | 45 | return; |
| nkeynes@2 | 46 | int num = watch - watch_arr; |
| nkeynes@2 | 47 | if( num < 0 || num >= watch_capacity ) |
| nkeynes@6 | 48 | return; |
| nkeynes@2 | 49 | watch->start = watch->end = 0; |
| nkeynes@2 | 50 | watch->flags = 0; |
| nkeynes@2 | 51 | watch_count--; |
| nkeynes@2 | 52 | } |
| nkeynes@2 | 53 | |
| nkeynes@2 | 54 | |
| nkeynes@2 | 55 | watch_point_t mem_is_watched( uint32_t addr, int size, int op ) |
| nkeynes@2 | 56 | {
|
| nkeynes@2 | 57 | int i, count; |
| nkeynes@2 | 58 | addr &= 0x1FFFFFFF; |
| nkeynes@2 | 59 | for( i=0, count=0; count< watch_count; i++ ) {
|
| nkeynes@2 | 60 | if( watch_arr[i].flags == 0 ) |
| nkeynes@2 | 61 | continue; |
| nkeynes@2 | 62 | count++; |
| nkeynes@2 | 63 | if( watch_arr[i].flags & op && |
| nkeynes@2 | 64 | watch_arr[i].start < addr+size && |
| nkeynes@2 | 65 | watch_arr[i].end >= addr ) {
|
| nkeynes@2 | 66 | return &watch_arr[i]; |
| nkeynes@2 | 67 | } |
| nkeynes@2 | 68 | } |
| nkeynes@2 | 69 | return NULL; |
| nkeynes@2 | 70 | } |
| nkeynes@2 | 71 |
.