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authorgrischka <grischka>2009-04-18 14:28:45 +0200
committergrischka <grischka>2009-04-18 15:08:03 +0200
commitea5e81bd6a3376232bf4747b2fa2e0a91c19b337 (patch)
treef88b43a25996cd7f4b9c32aac70fdd33e3f4dc2c /lib/alloca86.S
parente8a52a824957808410a8eb13d4b5e2f3e1776553 (diff)
downloadtinycc-ea5e81bd6a3376232bf4747b2fa2e0a91c19b337.tar.gz
tinycc-ea5e81bd6a3376232bf4747b2fa2e0a91c19b337.tar.bz2
new subdirs: include, lib, tests
Diffstat (limited to 'lib/alloca86.S')
-rw-r--r--lib/alloca86.S33
1 files changed, 33 insertions, 0 deletions
diff --git a/lib/alloca86.S b/lib/alloca86.S
new file mode 100644
index 0000000..a60b140
--- /dev/null
+++ b/lib/alloca86.S
@@ -0,0 +1,33 @@
+/* ---------------------------------------------- */
+/* alloca86.S */
+
+#include "config.h"
+
+.globl _alloca
+
+_alloca:
+ pop %edx
+ pop %eax
+ add $3,%eax
+ and $-4,%eax
+ jz p3
+
+#ifdef TCC_TARGET_PE
+p1:
+ cmp $4096,%eax
+ jle p2
+ sub $4096,%esp
+ sub $4096,%eax
+ test %eax,(%esp)
+ jmp p1
+p2:
+#endif
+
+ sub %eax,%esp
+ mov %esp,%eax
+p3:
+ push %edx
+ push %edx
+ ret
+
+/* ---------------------------------------------- */