diff options
Diffstat (limited to 'src/kernel/syscalls.c')
| -rw-r--r-- | src/kernel/syscalls.c | 29 |
1 files changed, 8 insertions, 21 deletions
diff --git a/src/kernel/syscalls.c b/src/kernel/syscalls.c index 7234e10..7d0f81f 100644 --- a/src/kernel/syscalls.c +++ b/src/kernel/syscalls.c @@ -1,4 +1,5 @@ #include <kernel/arch/generic.h> +#include <kernel/mem.h> #include <kernel/panic.h> #include <kernel/proc.h> #include <kernel/syscalls.h> @@ -22,29 +23,15 @@ int _syscall_fork() { } int _syscall_debuglog(const char *msg, size_t len) { - struct pagedir *pages = process_current->pages; - size_t remaining = len; + struct virt_iter iter; + size_t written; - while (remaining > 0) { - /* note: While i'm pretty sure that this should always work, this - * was only tested in cases where the pages were consecutive both in - * virtual and physical memory, which might not always be the case. - * TODO test this */ - - void *phys = pagedir_virt2phys(pages, msg, true, false); - size_t partial = remaining; - - // don't read past the page - if (((uintptr_t)msg & PAGE_MASK) + remaining > PAGE_SIZE) - partial = PAGE_SIZE - ((uintptr_t)msg & PAGE_MASK); - - tty_write(phys, partial); - - remaining -= partial; - msg += partial; + virt_iter_new(&iter, msg, len, process_current->pages, true, false); + while (virt_iter_next(&iter)) { + tty_write(iter.frag, iter.frag_len); + written += iter.frag_len; } - - return len; + return written; } int syscall_handler(int num, int a, int b, int c) { |