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[/] [or1k/] [trunk/] [rtems/] [c/] [src/] [exec/] [score/] [cpu/] [sparc/] [asm.h] - Blame information for rev 1765

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/*  asm.h
 *
 *  This include file attempts to address the problems
 *  caused by incompatible flavors of assemblers and
 *  toolsets.  It primarily addresses variations in the
 *  use of leading underscores on symbols and the requirement
 *  that register names be preceded by a %.
 *
 *
 *  NOTE: The spacing in the use of these macros
 *        is critical to them working as advertised.
 *
 *  COPYRIGHT:
 *
 *  This file is based on similar code found in newlib available
 *  from ftp.cygnus.com.  The file which was used had no copyright
 *  notice.  This file is freely distributable as long as the source
 *  of the file is noted.
 *
 *  $Id: asm.h,v 1.2 2001-09-27 11:59:30 chris Exp $
 */
 
#ifndef __SPARC_ASM_h
#define __SPARC_ASM_h
 
/*
 *  Indicate we are in an assembly file and get the basic CPU definitions.
 */
 
#ifndef ASM
#define ASM
#endif
 
#include <rtems/score/targopts.h>
#include <rtems/score/cpu.h>
 
/*
 *  Recent versions of GNU cpp define variables which indicate the
 *  need for underscores and percents.  If not using GNU cpp or
 *  the version does not support this, then you will obviously
 *  have to define these as appropriate.
 */
 
/* XXX __USER_LABEL_PREFIX__ and __REGISTER_PREFIX__ do not work on gcc 2.7.0 */
/* XXX The following ifdef magic fixes the problem but results in a warning   */
/* XXX when compiling assembly code.                                          */
 
#ifndef __USER_LABEL_PREFIX__
#define __USER_LABEL_PREFIX__ _
#endif
 
#ifndef __REGISTER_PREFIX__
#define __REGISTER_PREFIX__
#endif
 
/* ANSI concatenation macros.  */
 
#define CONCAT1(a, b) CONCAT2(a, b)
#define CONCAT2(a, b) a ## b
 
/* Use the right prefix for global labels.  */
 
#define SYM(x) CONCAT1 (__USER_LABEL_PREFIX__, x)
 
/* Use the right prefix for registers.  */
 
#define REG(x) CONCAT1 (__REGISTER_PREFIX__, x)
 
/*
 *  define macros for all of the registers on this CPU
 *
 *  EXAMPLE:     #define d0 REG (d0)
 */
 
/*
 *  Define macros to handle section beginning and ends.
 */
 
 
#define BEGIN_CODE_DCL .text
#define END_CODE_DCL
#define BEGIN_DATA_DCL .data
#define END_DATA_DCL
#define BEGIN_CODE .text
#define END_CODE
#define BEGIN_DATA
#define END_DATA
#define BEGIN_BSS
#define END_BSS
#define END
 
/*
 *  Following must be tailor for a particular flavor of the C compiler.
 *  They may need to put underscores in front of the symbols.
 */
 
#define PUBLIC(sym) .globl SYM (sym)
#define EXTERN(sym) .globl SYM (sym)
 
/*
 *  Entry for traps which jump to a programmer-specified trap handler.
 */
 
#define TRAP(_vector, _handler)  \
  mov   %psr, %l0 ; \
  sethi %hi(_handler), %l4 ; \
  jmp   %l4+%lo(_handler); \
  mov   _vector, %l3
 
/*
 *  Used for the reset trap for ERC32 to avoid a supervisor instruction
 */
 
#define RTRAP(_vector, _handler)  \
  mov   %g0, %l0 ; \
  sethi %hi(_handler), %l4 ; \
  jmp   %l4+%lo(_handler); \
  mov   _vector, %l3
 
#endif
/* end of include file */
 
 

Line No.	Rev	Author	Line
1	158	chris	`/* asm.h`
2			`*`
3			`* This include file attempts to address the problems`
4			`* caused by incompatible flavors of assemblers and`
5			`* toolsets. It primarily addresses variations in the`
6			`* use of leading underscores on symbols and the requirement`
7			`* that register names be preceded by a %.`
8			`*`
9			`*`
10			`* NOTE: The spacing in the use of these macros`
11			`* is critical to them working as advertised.`
12			`*`
13			`* COPYRIGHT:`
14			`*`
15			`* This file is based on similar code found in newlib available`
16			`* from ftp.cygnus.com. The file which was used had no copyright`
17			`* notice. This file is freely distributable as long as the source`
18			`* of the file is noted.`
19			`*`
20	208	chris	`* $Id: asm.h,v 1.2 2001-09-27 11:59:30 chris Exp $`
21	158	chris	`*/`
22
23			`#ifndef __SPARC_ASM_h`
24			`#define __SPARC_ASM_h`
25
26			`/*`
27			`* Indicate we are in an assembly file and get the basic CPU definitions.`
28			`*/`
29
30			`#ifndef ASM`
31			`#define ASM`
32			`#endif`
33
34			`#include <rtems/score/targopts.h>`
35			`#include <rtems/score/cpu.h>`
36
37			`/*`
38			`* Recent versions of GNU cpp define variables which indicate the`
39			`* need for underscores and percents. If not using GNU cpp or`
40			`* the version does not support this, then you will obviously`
41			`* have to define these as appropriate.`
42			`*/`
43
44			`/* XXX __USER_LABEL_PREFIX__ and __REGISTER_PREFIX__ do not work on gcc 2.7.0 */`
45			`/* XXX The following ifdef magic fixes the problem but results in a warning */`
46			`/* XXX when compiling assembly code. */`
47
48			`#ifndef __USER_LABEL_PREFIX__`
49			`#define __USER_LABEL_PREFIX__ _`
50			`#endif`
51
52			`#ifndef __REGISTER_PREFIX__`
53			`#define __REGISTER_PREFIX__`
54			`#endif`
55
56			`/* ANSI concatenation macros. */`
57
58			`#define CONCAT1(a, b) CONCAT2(a, b)`
59			`#define CONCAT2(a, b) a ## b`
60
61			`/* Use the right prefix for global labels. */`
62
63			`#define SYM(x) CONCAT1 (__USER_LABEL_PREFIX__, x)`
64
65			`/* Use the right prefix for registers. */`
66
67			`#define REG(x) CONCAT1 (__REGISTER_PREFIX__, x)`
68
69			`/*`
70			`* define macros for all of the registers on this CPU`
71			`*`
72			`* EXAMPLE: #define d0 REG (d0)`
73			`*/`
74
75			`/*`
76			`* Define macros to handle section beginning and ends.`
77			`*/`
78
79
80			`#define BEGIN_CODE_DCL .text`
81			`#define END_CODE_DCL`
82			`#define BEGIN_DATA_DCL .data`
83			`#define END_DATA_DCL`
84			`#define BEGIN_CODE .text`
85			`#define END_CODE`
86			`#define BEGIN_DATA`
87			`#define END_DATA`
88			`#define BEGIN_BSS`
89			`#define END_BSS`
90			`#define END`
91
92			`/*`
93			`* Following must be tailor for a particular flavor of the C compiler.`
94			`* They may need to put underscores in front of the symbols.`
95			`*/`
96
97			`#define PUBLIC(sym) .globl SYM (sym)`
98			`#define EXTERN(sym) .globl SYM (sym)`
99
100			`/*`
101			`* Entry for traps which jump to a programmer-specified trap handler.`
102			`*/`
103
104			`#define TRAP(_vector, _handler) \`
105			`mov %psr, %l0 ; \`
106			`sethi %hi(_handler), %l4 ; \`
107			`jmp %l4+%lo(_handler); \`
108			`mov _vector, %l3`
109
110			`/*`
111			`* Used for the reset trap for ERC32 to avoid a supervisor instruction`
112			`*/`
113
114			`#define RTRAP(_vector, _handler) \`
115			`mov %g0, %l0 ; \`
116			`sethi %hi(_handler), %l4 ; \`
117			`jmp %l4+%lo(_handler); \`
118			`mov _vector, %l3`
119
120			`#endif`
121			`/* end of include file */`
122
123

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[/] [or1k/] [trunk/] [rtems/] [c/] [src/] [exec/] [score/] [cpu/] [sparc/] [asm.h] - Blame information for rev 1765