RTEMS: cpukit/score/cpu/powerpc/include/rtems/asm.h Source File

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asm.h
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1
17/*
18 * COPYRIGHT:
19 *
20 * This file is based on similar code found in newlib available
21 * from ftp.cygnus.com. The file which was used had no copyright
22 * notice. This file is freely distributable as long as the source
23 * of the file is noted. This file is:
24 *
25 * COPYRIGHT (c) 1995.
26 * i-cubed ltd.
27 *
28 * COPYRIGHT (c) 1994.
29 * On-Line Applications Research Corporation (OAR).
30 */
31
32#ifndef _RTEMS_ASM_H
33#define _RTEMS_ASM_H
34
35/*
36 * Indicate we are in an assembly file and get the basic CPU definitions.
37 */
38
39#ifndef ASM
40#define ASM
41#endif
42#include <rtems/score/cpuopts.h>
43#include <rtems/score/powerpc.h>
44
55/*
56 * Recent versions of GNU cpp define variables which indicate the
57 * need for underscores and percents. If not using GNU cpp or
58 * the version does not support this, then you will obviously
59 * have to define these as appropriate.
60 */
61
62#ifndef __USER_LABEL_PREFIX__
63#define __USER_LABEL_PREFIX__
64#endif
65
66#ifndef __REGISTER_PREFIX__
67#define __REGISTER_PREFIX__
68#endif
69
70#ifndef __FLOAT_REGISTER_PREFIX__
71#define __FLOAT_REGISTER_PREFIX__ __REGISTER_PREFIX__
72#endif
73
74#ifndef __PROC_LABEL_PREFIX__
75#define __PROC_LABEL_PREFIX__ __USER_LABEL_PREFIX__
76#endif
77
78#include <rtems/concat.h>
79
80/* Use the right prefix for global labels. */
81
82#define SYM(x) CONCAT1 (__USER_LABEL_PREFIX__, x)
83
84/* Use the right prefix for procedure labels. */
85
86#define PROC(x) CONCAT1 (__PROC_LABEL_PREFIX__, x)
87
88/* Use the right prefix for registers. */
89
90#define REG(x) CONCAT1 (__REGISTER_PREFIX__, x)
91
92/* Use the right prefix for floating point registers. */
93
94#define FREG(x) CONCAT1 (__FLOAT_REGISTER_PREFIX__, x)
95
96/*
97 * define macros for all of the registers on this CPU
98 *
99 * EXAMPLE: #define d0 REG (d0)
100 */
101#define r0 REG(0)
102#define r1 REG(1)
103#define r2 REG(2)
104#define r3 REG(3)
105#define r4 REG(4)
106#define r5 REG(5)
107#define r6 REG(6)
108#define r7 REG(7)
109#define r8 REG(8)
110#define r9 REG(9)
111#define r10 REG(10)
112#define r11 REG(11)
113#define r12 REG(12)
114#define r13 REG(13)
115#define r14 REG(14)
116#define r15 REG(15)
117#define r16 REG(16)
118#define r17 REG(17)
119#define r18 REG(18)
120#define r19 REG(19)
121#define r20 REG(20)
122#define r21 REG(21)
123#define r22 REG(22)
124#define r23 REG(23)
125#define r24 REG(24)
126#define r25 REG(25)
127#define r26 REG(26)
128#define r27 REG(27)
129#define r28 REG(28)
130#define r29 REG(29)
131#define r30 REG(30)
132#define r31 REG(31)
133#define f0 FREG(0)
134#define f1 FREG(1)
135#define f2 FREG(2)
136#define f3 FREG(3)
137#define f4 FREG(4)
138#define f5 FREG(5)
139#define f6 FREG(6)
140#define f7 FREG(7)
141#define f8 FREG(8)
142#define f9 FREG(9)
143#define f10 FREG(10)
144#define f11 FREG(11)
145#define f12 FREG(12)
146#define f13 FREG(13)
147#define f14 FREG(14)
148#define f15 FREG(15)
149#define f16 FREG(16)
150#define f17 FREG(17)
151#define f18 FREG(18)
152#define f19 FREG(19)
153#define f20 FREG(20)
154#define f21 FREG(21)
155#define f22 FREG(22)
156#define f23 FREG(23)
157#define f24 FREG(24)
158#define f25 FREG(25)
159#define f26 FREG(26)
160#define f27 FREG(27)
161#define f28 FREG(28)
162#define f29 FREG(29)
163#define f30 FREG(30)
164#define f31 FREG(31)
165#define v0 0
166#define v1 1
167#define v2 2
168#define v3 3
169#define v4 4
170#define v5 5
171#define v6 6
172#define v7 7
173#define v8 8
174#define v9 9
175#define v10 10
176#define v11 11
177#define v12 12
178#define v13 13
179#define v14 14
180#define v15 15
181#define v16 16
182#define v17 17
183#define v18 18
184#define v19 19
185#define v20 20
186#define v21 21
187#define v22 22
188#define v23 23
189#define v24 24
190#define v25 25
191#define v26 26
192#define v27 27
193#define v28 28
194#define v29 29
195#define v30 30
196#define v31 31
197
198/*
199 * Some special purpose registers (SPRs).
200 */
201#define srr0 0x01a
202#define srr1 0x01b
203#define srr2 0x3de /* IBM 400 series only */
204#define srr3 0x3df /* IBM 400 series only */
205#define csrr0 58 /* Book E */
206#define csrr1 59 /* Book E */
207#define mcsrr0 570 /* e500 */
208#define mcsrr1 571 /* e500 */
209#define dsrr0 574 /* e200 */
210#define dsrr1 575 /* e200 */
211
212#define sprg0 0x110
213#define sprg1 0x111
214#define sprg2 0x112
215#define sprg3 0x113
216#define sprg4 276
217#define sprg5 277
218#define sprg6 278
219#define sprg7 279
220
221#define usprg0 256
222
223#define dar 0x013 /* Data Address Register */
224#define dec 0x016 /* Decrementer Register */
225
226#if defined(ppc403) || defined(ppc405)
227/* the following SPR/DCR registers exist only in IBM 400 series */
228#define dear 0x3d5
229#define evpr 0x3d6 /* SPR: exception vector prefix register */
230#define iccr 0x3fb /* SPR: instruction cache control reg. */
231#define dccr 0x3fa /* SPR: data cache control reg. */
232
233#if defined (ppc403)
234#define exisr 0x040 /* DCR: external interrupt status register */
235#define exier 0x042 /* DCR: external interrupt enable register */
236#endif /* ppc403 */
237#if defined(ppc405)
238#define exisr 0x0C0 /* DCR: external interrupt status register */
239#define exier 0x0C2 /* DCR: external interrupt enable register */
240#endif /* ppc405 */
241
242#define br0 0x080 /* DCR: memory bank register 0 */
243#define br1 0x081 /* DCR: memory bank register 1 */
244#define br2 0x082 /* DCR: memory bank register 2 */
245#define br3 0x083 /* DCR: memory bank register 3 */
246#define br4 0x084 /* DCR: memory bank register 4 */
247#define br5 0x085 /* DCR: memory bank register 5 */
248#define br6 0x086 /* DCR: memory bank register 6 */
249#define br7 0x087 /* DCR: memory bank register 7 */
250
251/* end of IBM400 series register definitions */
252
253#elif defined(mpc860) || defined(mpc821)
254/* The following registers are for the MPC8x0 */
255#define der 0x095 /* Debug Enable Register */
256#define ictrl 0x09E /* Instruction Support Control Register */
257#define immr 0x27E /* Internal Memory Map Register */
258/* end of MPC8x0 registers */
259#endif
260
261/*
262 * Following must be tailor for a particular flavor of the C compiler.
263 * They may need to put underscores in front of the symbols.
264 */
265
266#define PUBLIC_VAR(sym) .globl SYM (sym)
267#define EXTERN_VAR(sym) .extern SYM (sym)
268#define PUBLIC_PROC(sym) .globl PROC (sym)
269#define EXTERN_PROC(sym) .extern PROC (sym)
270
271/* Other potentially assembler specific operations */
272#if PPC_ASM == PPC_ASM_ELF
273#define ALIGN(n,p) .align p
274#define DESCRIPTOR(x) \
275 .section .descriptors,"aw"; \
276 PUBLIC_VAR (x); \
277SYM (x):; \
278 .long PROC (x); \
279 .long s.got; \
280 .long 0
281
282#define EXT_SYM_REF(x) .long x
283#define EXT_PROC_REF(x) .long x
284
285/*
286 * Define macros to handle section beginning and ends.
287 */
288
289#define BEGIN_CODE_DCL .text
290#define END_CODE_DCL
291#define BEGIN_DATA_DCL .data
292#define END_DATA_DCL
293#define BEGIN_CODE .text
294#define END_CODE
295#define BEGIN_DATA .data
296#define END_DATA
297#define BEGIN_BSS .bss
298#define END_BSS
299#define END
300
301#else
302#error "PPC_ASM_TYPE is not properly defined"
303#endif
304#ifndef PPC_ASM
305#error "PPC_ASM_TYPE is not properly defined"
306#endif
307
308#if defined(__powerpc64__)
309#define PPC64_NOP_FOR_LINKER_TOC_POINTER_RESTORE nop
310#else
311#define PPC64_NOP_FOR_LINKER_TOC_POINTER_RESTORE
312#endif
313
314#endif
315
concat.h
powerpc.h
IBM/Motorola PowerPC Definitions.