tiny C support; cosmetic improvements for the docs

1 files changed, 45 insertions, 0 deletions

diff --git a/tinyc/lib/alloca86-bt.S b/tinyc/lib/alloca86-bt.S
new file mode 100755
index 000000000..994da2042
--- /dev/null
+++ b/tinyc/lib/alloca86-bt.S
@@ -0,0 +1,45 @@
+/* ---------------------------------------------- */
+/* alloca86b.S */
+
+#include "../config.h"
+
+.globl __bound_alloca
+
+__bound_alloca:
+    pop     %edx
+    pop     %eax
+    mov     %eax, %ecx
+    add     $3,%eax
+    and     $-4,%eax
+    jz      p6
+
+#ifdef TCC_TARGET_PE
+p4:
+    cmp     $4096,%eax
+    jle     p5
+    sub     $4096,%esp
+    sub     $4096,%eax
+    test    %eax,(%esp)
+    jmp p4
+
+p5:
+#endif
+
+    sub     %eax,%esp
+    mov     %esp,%eax
+
+    push    %edx
+    push    %eax
+    push    %ecx
+    push    %eax
+    call   __bound_new_region
+    add    $8, %esp
+    pop     %eax
+    pop     %edx
+
+p6:
+    push    %edx
+    push    %edx
+    ret
+
+/* ---------------------------------------------- */