source: trunk/libs/newlib/src/libgloss/msp430/memmodel.h @ 672

Last change on this file since 672 was 444, checked in by satin@…, 6 years ago

add newlib,libalmos-mkh, restructure shared_syscalls.h and mini-libc

File size: 2.0 KB
Line 
1/* Copyright (c) 2012-2015 Red Hat, Inc. All rights reserved.
2
3   This copyrighted material is made available to anyone wishing to use, modify,
4   copy, or redistribute it subject to the terms and conditions of the BSD
5   License.   This program is distributed in the hope that it will be useful,
6   but WITHOUT ANY WARRANTY expressed or implied, including the implied warranties
7   of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  A copy of this license
8   is available at http://www.opensource.org/licenses. Any Red Hat trademarks that
9   are incorporated in the source code or documentation are not subject to the BSD
10   License and may only be used or replicated with the express permission of
11   Red Hat, Inc.
12*/
13
14/* This file provides macros for various MSP430 instructions
15   which have similar, but not identical, versions when assembling
16   for the LARGE memory model.  */
17
18#ifdef __MSP430X_LARGE__
19
20#define call_   CALLA
21#define ret_    RETA
22#define mov_    MOVA
23#define movx_   MOVX
24#define br_     BRA
25#define cmp_    CMPA
26#define add_    ADDA
27#define PTRsz   4
28
29#else
30
31#define call_   CALL
32#define ret_    RET
33#define mov_    MOV
34#define movx_   MOV
35#define br_     BR
36#define cmp_    CMP
37#define add_    ADD
38#define PTRsz   2
39
40#endif
41
42/* Start a function in its own named and numbered section, so that it
43   can be subject to linker garbage collection.  The numbers are used
44   to enforce link-time ordering of the sections.  Note - the construction
45   of the symbol names is critical - they need to match the unresolved
46   symbol references created by the compiler and assembler.  */
47.macro START_CRT_FUNC number name
48        .section .crt_\number\name,"ax",@progbits
49        .global __crt0_\name
50        .type __crt0_\name , @function
51__crt0_\name:
52.endm
53
54
55/* End a named function.  Sets the size so that GDB does not get confused.  */
56.macro END_CRT_FUNC name
57   .size __crt0_\name, . - __crt0_\name
58.endm
59
60
61/* Provide a weak definition of NAME, initialized to zero.  */
62.macro WEAK_DEF name
63        .global \name
64        .weak   \name
65   \name  = 0
66.endm
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