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-rw-r--r--list.asm40
1 files changed, 40 insertions, 0 deletions
diff --git a/list.asm b/list.asm
index a463c8e..50c86b3 100644
--- a/list.asm
+++ b/list.asm
@@ -21,6 +21,7 @@
;; THE SOFTWARE.
extern malloc
+extern free
;; initializes the list stored at address $rdi with default values
global list_init:function
@@ -32,6 +33,10 @@ global list_new_raw:function
;; same as list_new_raw, unless the list is initialized with default values
global list_new:function
+;; remove every element of the list pointed to by $rip.
+;; the elements are freed using free() from the libc
+global list_clear:function
+
;; create a new element (using dynamic allocation) at the end of the list
;; stored at address $rdi. the created element will contain the value of $rsi
;; if, unlikely, the allocation fails, $rax will contain -1.
@@ -87,6 +92,41 @@ list_new_raw: ;; {{{
ret
;; }}}
+list_clear: ;; {{{
+
+ enter 0, 0
+
+ mov ecx, [rdi + list_t.size] ; load the size of the list into the counter
+
+ test ecx, ecx
+ je .end
+
+ mov rsi, QWORD [rdi + list_t.first]
+
+ ; the list is reset to its initial state
+ mov DWORD [rdi + list_t.size], 0
+ mov QWORD [rdi + list_t.first], 0
+
+ .loop:
+ push QWORD [rsi + elem_t.next]
+ push rcx
+
+ mov rdi, rsi
+ call free
+
+ pop rcx
+ pop rsi
+
+ dec ecx
+
+ test ecx, ecx
+ jne .loop
+
+ .end
+ leave
+ ret
+
+;; }}}
list_append: ;; {{{
enter 0x18, 0