From 3e39c56f356ca32b9f490f739304dde32161816a Mon Sep 17 00:00:00 2001
From: Jan Nieuwenhuizen <janneke@gnu.org>
Date: Mon, 24 Jul 2017 17:09:33 +0200
Subject: [PATCH] mescc: Tinycc support: unlink.

* mlibc/include/unistd.h (unlink): Declare.
* stage0/x86.M1 (SYS_unlink): New define.
* mlibc/libc-mes+tcc.c (unlink): New function.
---
 mlibc/include/unistd.h |  1 +
 mlibc/libc-mes+tcc.c   | 12 ++++++++++++
 stage0/x86.M1          |  1 +
 3 files changed, 14 insertions(+)

diff --git a/mlibc/include/unistd.h b/mlibc/include/unistd.h
index 37d21fc3..a6b3ae3f 100644
--- a/mlibc/include/unistd.h
+++ b/mlibc/include/unistd.h
@@ -43,6 +43,7 @@ int access (char const *s, int mode);
 int close (int fd);
 char *getcwd (char *buf, size_t size);
 int read (int fd, void* buf, size_t n);
+int unlink (char const *file_name);
 int write (int fd, char const* s, int n);
 #endif // ! (__GNUC__ && POSIX)
 
diff --git a/mlibc/libc-mes+tcc.c b/mlibc/libc-mes+tcc.c
index 9032ca06..cb889a6f 100644
--- a/mlibc/libc-mes+tcc.c
+++ b/mlibc/libc-mes+tcc.c
@@ -43,6 +43,18 @@ getcwd (char *buf, size_t size)
   asm ("int____$0x80");
 }
 
+int
+unlink (char const *file_name)
+{
+  asm ("mov____0x8(%ebp),%ebx !8");
+
+  asm ("mov____$i32,%eax SYS_unlink");
+  asm ("int____$0x80");
+}
+
+
+
+
 int
 fprintf (FILE *stream, char const *format, ...)
 {
diff --git a/stage0/x86.M1 b/stage0/x86.M1
index 6c12f866..5db4febb 100644
--- a/stage0/x86.M1
+++ b/stage0/x86.M1
@@ -163,6 +163,7 @@ DEFINE SYS_read   03000000
 DEFINE SYS_write  04000000
 DEFINE SYS_open   05000000
 DEFINE SYS_close  06000000
+DEFINE SYS_unlink 0a000000
 DEFINE SYS_access 21000000
 DEFINE SYS_brk    2d000000
 DEFINE SYS_fsync  76000000