diff options
Diffstat (limited to 'src/kernel')
| -rw-r--r-- | src/kernel/console.C | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/src/kernel/console.C b/src/kernel/console.C index 2c33645fe..18286a283 100644 --- a/src/kernel/console.C +++ b/src/kernel/console.C @@ -11,10 +11,13 @@ Console::Console() : iv_pos(0), iv_buffer(kernel_printk_buffer) int Console::putc(int c) { - if (BUFFER_SIZE > iv_pos) + if ('\b' == c) { - iv_buffer[iv_pos] = c; - iv_pos++; + __sync_sub_and_fetch(&iv_pos, 1); + } + else if (BUFFER_SIZE > iv_pos) + { + iv_buffer[__sync_fetch_and_add(&iv_pos, 1)] = c; } } |
