Created student weenix repository

1 files changed, 37 insertions, 0 deletions

diff --git a/user/lib/ld-weenix/asm.h b/user/lib/ld-weenix/asm.h
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+++ b/user/lib/ld-weenix/asm.h
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+/* Assembler macros for x86-64.
+   Copyright (C) 2018-2019 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#ifndef _ASM_H
+#define _ASM_H 1
+
+/* ELF uses byte-counts for .align, most others use log2 of count of bytes.  */
+#define ALIGNARG(log2) 1 << log2
+#define ASM_SIZE_DIRECTIVE(name) .size name, .- name;
+
+/* Define an entry point visible from C.  */
+#define ENTRY(name)        \
+    .globl name;           \
+    .type name, @function; \
+    .align ALIGNARG(4);    \
+    name## :.cfi_startproc;
+
+#define END(name) \
+    .cfi_endproc; \
+    ASM_SIZE_DIRECTIVE(name)
+
+#endif /* _ASM_H */