davinci: da8xxevm: fix indentation
[platform/kernel/u-boot.git] / include / ppc_asm.tmpl
1 /*
2  * (C) Copyright 2000-2002
3  * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
4  *
5  * SPDX-License-Identifier:     GPL-2.0+
6  */
7
8 /*
9  * This file contains all the macros and symbols which define
10  * a PowerPC assembly language environment.
11  */
12 #ifndef __PPC_ASM_TMPL__
13 #define __PPC_ASM_TMPL__
14
15 #include <config.h>
16
17 /***************************************************************************
18  *
19  * These definitions simplify the ugly declarations necessary for GOT
20  * definitions.
21  *
22  * Stolen from prepboot/bootldr.h, (C) 1998 Gabriel Paubert, paubert@iram.es
23  *
24  * Uses r12 to access the GOT
25  */
26
27 #define START_GOT                       \
28         .section        ".got2","aw";   \
29 .LCTOC1 = .+32768
30
31 #define END_GOT                         \
32         .text
33
34 #define GET_GOT                         \
35         bl      1f              ;       \
36         .text   2               ;       \
37 0:      .long   .LCTOC1-1f      ;       \
38         .text                   ;       \
39 1:      mflr    r12             ;       \
40         lwz     r0,0b-1b(r12)   ;       \
41         add     r12,r0,r12      ;
42
43 #define GOT_ENTRY(NAME)         .L_ ## NAME = . - .LCTOC1 ; .long NAME
44
45 #define GOT(NAME)               .L_ ## NAME (r12)
46
47
48 /***************************************************************************
49  * Register names
50  */
51 #define r0      0
52 #define r1      1
53 #define r2      2
54 #define r3      3
55 #define r4      4
56 #define r5      5
57 #define r6      6
58 #define r7      7
59 #define r8      8
60 #define r9      9
61 #define r10     10
62 #define r11     11
63 #define r12     12
64 #define r13     13
65 #define r14     14
66 #define r15     15
67 #define r16     16
68 #define r17     17
69 #define r18     18
70 #define r19     19
71 #define r20     20
72 #define r21     21
73 #define r22     22
74 #define r23     23
75 #define r24     24
76 #define r25     25
77 #define r26     26
78 #define r27     27
79 #define r28     28
80 #define r29     29
81 #define r30     30
82 #define r31     31
83
84
85 #if defined(CONFIG_8xx)
86
87 /* Some special registers */
88
89 #define ICR     148     /* Interrupt Cause Register (37-44) */
90 #define DER     149
91 #define COUNTA  150     /* Breakpoint Counter       (37-44) */
92 #define COUNTB  151     /* Breakpoint Counter       (37-44) */
93 #define LCTRL1  156     /* Load/Store Support       (37-40) */
94 #define LCTRL2  157     /* Load/Store Support       (37-41) */
95 #define ICTRL   158
96
97 #endif  /* CONFIG_8xx */
98
99
100 #if  defined(CONFIG_5xx)
101 /* Some special purpose registers */
102 #define DER     149             /* Debug Enable Register                */
103 #define COUNTA  150             /* Breakpoint Counter                   */
104 #define COUNTB  151             /* Breakpoint Counter                   */
105 #define LCTRL1  156             /* Load/Store Support                   */
106 #define LCTRL2  157             /* Load/Store Support                   */
107 #define ICTRL   158             /* I-Bus Support Control Register       */
108 #define EID     81
109 #endif  /* CONFIG_5xx */
110
111 #if defined(CONFIG_8xx)
112
113 /* Registers in the processor's internal memory map that we use.
114 */
115 #define SYPCR   0x00000004
116 #define BR0     0x00000100
117 #define OR0     0x00000104
118 #define BR1     0x00000108
119 #define OR1     0x0000010c
120 #define BR2     0x00000110
121 #define OR2     0x00000114
122 #define BR3     0x00000118
123 #define OR3     0x0000011c
124 #define BR4     0x00000120
125 #define OR4     0x00000124
126
127 #define MAR     0x00000164
128 #define MCR     0x00000168
129 #define MAMR    0x00000170
130 #define MBMR    0x00000174
131 #define MSTAT   0x00000178
132 #define MPTPR   0x0000017a
133 #define MDR     0x0000017c
134
135 #define TBSCR   0x00000200
136 #define TBREFF0 0x00000204
137
138 #define PLPRCR  0x00000284
139
140 #elif defined(CONFIG_MPC8260)
141
142 #define HID2            1011
143
144 #define HID0_IFEM       (1<<7)
145
146 #define HID0_ICE_BITPOS 16
147 #define HID0_DCE_BITPOS 17
148
149 #define IM_REGBASE      0x10000
150 #define IM_SYPCR        (IM_REGBASE+0x0004)
151 #define IM_SWSR         (IM_REGBASE+0x000e)
152 #define IM_BR0          (IM_REGBASE+0x0100)
153 #define IM_OR0          (IM_REGBASE+0x0104)
154 #define IM_BR1          (IM_REGBASE+0x0108)
155 #define IM_OR1          (IM_REGBASE+0x010c)
156 #define IM_BR2          (IM_REGBASE+0x0110)
157 #define IM_OR2          (IM_REGBASE+0x0114)
158 #define IM_MPTPR        (IM_REGBASE+0x0184)
159 #define IM_PSDMR        (IM_REGBASE+0x0190)
160 #define IM_PSRT         (IM_REGBASE+0x019c)
161 #define IM_IMMR         (IM_REGBASE+0x01a8)
162 #define IM_SCCR         (IM_REGBASE+0x0c80)
163
164 #elif defined(CONFIG_MPC5xxx)
165
166 #define HID0_ICE_BITPOS 16
167 #define HID0_DCE_BITPOS 17
168
169 #endif
170
171 #define curptr r2
172
173 #define SYNC \
174         sync; \
175         isync
176
177 /*
178  * Macros for storing registers into and loading registers from
179  * exception frames.
180  */
181 #define SAVE_GPR(n, base)       stw     n,GPR0+4*(n)(base)
182 #define SAVE_2GPRS(n, base)     SAVE_GPR(n, base); SAVE_GPR(n+1, base)
183 #define SAVE_4GPRS(n, base)     SAVE_2GPRS(n, base); SAVE_2GPRS(n+2, base)
184 #define SAVE_8GPRS(n, base)     SAVE_4GPRS(n, base); SAVE_4GPRS(n+4, base)
185 #define SAVE_10GPRS(n, base)    SAVE_8GPRS(n, base); SAVE_2GPRS(n+8, base)
186 #define REST_GPR(n, base)       lwz     n,GPR0+4*(n)(base)
187 #define REST_2GPRS(n, base)     REST_GPR(n, base); REST_GPR(n+1, base)
188 #define REST_4GPRS(n, base)     REST_2GPRS(n, base); REST_2GPRS(n+2, base)
189 #define REST_8GPRS(n, base)     REST_4GPRS(n, base); REST_4GPRS(n+4, base)
190 #define REST_10GPRS(n, base)    REST_8GPRS(n, base); REST_2GPRS(n+8, base)
191
192 /*
193  * GCC sometimes accesses words at negative offsets from the stack
194  * pointer, although the SysV ABI says it shouldn't.  To cope with
195  * this, we leave this much untouched space on the stack on exception
196  * entry.
197  */
198 #define STACK_UNDERHEAD 64
199
200 /*
201  * Exception entry code.  This code runs with address translation
202  * turned off, i.e. using physical addresses.
203  * We assume sprg3 has the physical address of the current
204  * task's thread_struct.
205  */
206 #define EXCEPTION_PROLOG(reg1, reg2)    \
207         mtspr   SPRG0,r20;      \
208         mtspr   SPRG1,r21;      \
209         mfcr    r20;            \
210         subi    r21,r1,INT_FRAME_SIZE+STACK_UNDERHEAD;  /* alloc exc. frame */\
211         stw     r20,_CCR(r21);          /* save registers */ \
212         stw     r22,GPR22(r21); \
213         stw     r23,GPR23(r21); \
214         mfspr   r20,SPRG0;      \
215         stw     r20,GPR20(r21); \
216         mfspr   r22,SPRG1;      \
217         stw     r22,GPR21(r21); \
218         mflr    r20;            \
219         stw     r20,_LINK(r21); \
220         mfctr   r22;            \
221         stw     r22,_CTR(r21);  \
222         mfspr   r20,XER;        \
223         stw     r20,_XER(r21);  \
224         mfspr   r20, DAR_DEAR;  \
225         stw     r20,_DAR(r21);  \
226         mfspr   r22,reg1;       \
227         mfspr   r23,reg2;       \
228         stw     r0,GPR0(r21);   \
229         stw     r1,GPR1(r21);   \
230         stw     r2,GPR2(r21);   \
231         stw     r1,0(r21);      \
232         mr      r1,r21;                 /* set new kernel sp */ \
233         SAVE_4GPRS(3, r21);
234 /*
235  * Note: code which follows this uses cr0.eq (set if from kernel),
236  * r21, r22 (SRR0), and r23 (SRR1).
237  */
238
239 /*
240  * Exception vectors.
241  *
242  * The data words for `hdlr' and `int_return' are initialized with
243  * OFFSET values only; they must be relocated first before they can
244  * be used!
245  */
246 #define COPY_EE(d, s)           rlwimi d,s,0,16,16
247 #define NOCOPY(d, s)
248
249 #ifdef CONFIG_E500
250 #define EXC_XFER_TEMPLATE(n, label, hdlr, msr, copyee)  \
251         stw     r22,_NIP(r21);                          \
252         stw     r23,_MSR(r21);                          \
253         li      r23,n;                                  \
254         stw     r23,TRAP(r21);                          \
255         li      r20,msr;                                \
256         copyee(r20,r23);                                \
257         rlwimi  r20,r23,0,25,25;                        \
258         mtmsr   r20;                                    \
259         bl      1f;                                     \
260 1:      mflr    r23;                                    \
261         addis   r23,r23,(hdlr - 1b)@ha;                 \
262         addi    r23,r23,(hdlr - 1b)@l;                  \
263         b       transfer_to_handler
264
265 #define STD_EXCEPTION(n, label, hdlr)                           \
266 .align 4;                                                       \
267 label:                                                          \
268         EXCEPTION_PROLOG(SRR0, SRR1);                           \
269         addi    r3,r1,STACK_FRAME_OVERHEAD;                     \
270         EXC_XFER_TEMPLATE(n, label, hdlr, MSR_KERNEL, NOCOPY)   \
271
272 #define CRIT_EXCEPTION(n, label, hdlr)                          \
273 .align 4;                                                       \
274 label:                                                          \
275         EXCEPTION_PROLOG(CSRR0, CSRR1);                         \
276         addi    r3,r1,STACK_FRAME_OVERHEAD;                     \
277         EXC_XFER_TEMPLATE(n, label, hdlr,                       \
278         MSR_KERNEL & ~(MSR_ME|MSR_DE|MSR_CE), NOCOPY)           \
279
280 #define MCK_EXCEPTION(n, label, hdlr)                           \
281 .align 4;                                                       \
282 label:                                                          \
283         EXCEPTION_PROLOG(MCSRR0, MCSRR1);                       \
284         addi    r3,r1,STACK_FRAME_OVERHEAD;                     \
285         EXC_XFER_TEMPLATE(n, label, hdlr,                       \
286         MSR_KERNEL & ~(MSR_ME|MSR_DE|MSR_CE), NOCOPY)           \
287
288 #else   /* !E500 */
289
290 #define EXC_XFER_TEMPLATE(label, hdlr, msr, copyee)     \
291         bl      1f;                                     \
292 1:      mflr    r20;                                    \
293         lwz     r20,(.L_ ## label)-1b+8(r20);           \
294         mtlr    r20;                                    \
295         li      r20,msr;                                \
296         copyee(r20,r23);                                \
297         rlwimi  r20,r23,0,25,25;                        \
298         blrl;                                           \
299 .L_ ## label :                                          \
300         .long   hdlr - _start + _START_OFFSET;          \
301         .long   int_return - _start + _START_OFFSET;    \
302         .long   transfer_to_handler - _start + _START_OFFSET
303
304 #define STD_EXCEPTION(n, label, hdlr)                           \
305         . = n;                                                  \
306 label:                                                          \
307         EXCEPTION_PROLOG(SRR0, SRR1);                           \
308         addi    r3,r1,STACK_FRAME_OVERHEAD;                     \
309         EXC_XFER_TEMPLATE(label, hdlr, MSR_KERNEL, NOCOPY)      \
310
311 #define CRIT_EXCEPTION(n, label, hdlr)                          \
312         . = n;                                                  \
313 label:                                                          \
314         EXCEPTION_PROLOG(CSRR0, CSRR1);                         \
315         addi    r3,r1,STACK_FRAME_OVERHEAD;                     \
316         EXC_XFER_TEMPLATE(label, hdlr,                          \
317         MSR_KERNEL & ~(MSR_ME|MSR_DE|MSR_CE), NOCOPY)           \
318
319 #define MCK_EXCEPTION(n, label, hdlr)                           \
320         . = n;                                                  \
321 label:                                                          \
322         EXCEPTION_PROLOG(MCSRR0, MCSRR1);                       \
323         addi    r3,r1,STACK_FRAME_OVERHEAD;                     \
324         EXC_XFER_TEMPLATE(label, hdlr,                          \
325         MSR_KERNEL & ~(MSR_ME|MSR_DE|MSR_CE), NOCOPY)           \
326
327 #endif  /* !E500 */
328 #endif  /* __PPC_ASM_TMPL__ */