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4 * Copyright (c) 2003 Fabrice Bellard
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2 of the License, or (at your option) any later version.
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with this library; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
21 int __op_param1
, __op_param2
, __op_param3
;
22 int __op_jmp0
, __op_jmp1
;
25 static inline void flush_icache_range(unsigned long start
, unsigned long stop
)
31 static inline void flush_icache_range(unsigned long start
, unsigned long stop
)
37 static inline void flush_icache_range(unsigned long start
, unsigned long stop
)
44 #define MIN_CACHE_LINE_SIZE 8 /* conservative value */
46 static void inline flush_icache_range(unsigned long start
, unsigned long stop
)
50 p
= start
& ~(MIN_CACHE_LINE_SIZE
- 1);
51 stop
= (stop
+ MIN_CACHE_LINE_SIZE
- 1) & ~(MIN_CACHE_LINE_SIZE
- 1);
53 for (p
= start
; p
< stop
; p
+= MIN_CACHE_LINE_SIZE
) {
54 asm volatile ("dcbst 0,%0" : : "r"(p
) : "memory");
56 asm volatile ("sync" : : : "memory");
57 for (p
= start
; p
< stop
; p
+= MIN_CACHE_LINE_SIZE
) {
58 asm volatile ("icbi 0,%0" : : "r"(p
) : "memory");
60 asm volatile ("sync" : : : "memory");
61 asm volatile ("isync" : : : "memory");
66 static inline void flush_icache_range(unsigned long start
, unsigned long stop
)
74 static void inline flush_icache_range(unsigned long start
, unsigned long stop
)
78 p
= start
& ~(8UL - 1UL);
79 stop
= (stop
+ (8UL - 1UL)) & ~(8UL - 1UL);
81 for (; p
< stop
; p
+= 8)
82 __asm__
__volatile__("flush\t%0" : : "r" (p
));
88 static inline void flush_icache_range(unsigned long start
, unsigned long stop
)
90 register unsigned long _beg
__asm ("a1") = start
;
91 register unsigned long _end
__asm ("a2") = stop
;
92 register unsigned long _flg
__asm ("a3") = 0;
93 __asm
__volatile__ ("swi 0x9f0002" : : "r" (_beg
), "r" (_end
), "r" (_flg
));
99 register int gp
asm("$29");
101 static inline void immediate_ldah(void *p
, int val
) {
103 long high
= ((val
>> 16) + ((val
>> 15) & 1)) & 0xffff;
109 static inline void immediate_lda(void *dest
, int val
) {
110 *(uint16_t *) dest
= val
;
112 void fix_bsr(void *p
, int offset
) {
114 *dest
&= ~((1 << 21) - 1);
115 *dest
|= (offset
>> 2) & ((1 << 21) - 1);
118 #endif /* __alpha__ */
122 #define MAX_OP_SIZE (128 * 4) /* in bytes */
123 /* max size of the code that can be generated without calling arm_flush_ldr */
124 #define MAX_FRAG_SIZE (1024 * 4)
125 //#define MAX_FRAG_SIZE (135 * 4) /* for testing */
127 typedef struct LDREntry
{
132 static LDREntry arm_ldr_table
[1024];
133 static uint32_t arm_data_table
[1024];
135 extern char exec_loop
;
137 static inline void arm_reloc_pc24(uint32_t *ptr
, uint32_t insn
, int val
)
139 *ptr
= (insn
& ~0xffffff) | ((insn
+ ((val
- (int)ptr
) >> 2)) & 0xffffff);
142 static uint8_t *arm_flush_ldr(uint8_t *gen_code_ptr
,
143 LDREntry
*ldr_start
, LDREntry
*ldr_end
,
144 uint32_t *data_start
, uint32_t *data_end
,
149 int offset
, data_size
, target
;
153 data_size
= (uint8_t *)data_end
- (uint8_t *)data_start
;
157 arm_reloc_pc24((uint32_t *)gen_code_ptr
, 0xeafffffe, (long)(&exec_loop
));
160 /* generate branch to skip the data */
163 target
= (long)gen_code_ptr
+ data_size
+ 4;
164 arm_reloc_pc24((uint32_t *)gen_code_ptr
, 0xeafffffe, target
);
169 data_ptr
= gen_code_ptr
;
170 memcpy(gen_code_ptr
, data_start
, data_size
);
171 gen_code_ptr
+= data_size
;
173 /* patch the ldr to point to the data */
174 for(le
= ldr_start
; le
< ldr_end
; le
++) {
175 ptr
= (uint32_t *)le
->ptr
;
176 offset
= ((unsigned long)(le
->data_ptr
) - (unsigned long)data_start
) +
177 (unsigned long)data_ptr
-
178 (unsigned long)ptr
- 8;
179 insn
= *ptr
& ~(0xfff | 0x00800000);
185 if (offset
> 0xfff) {
186 fprintf(stderr
, "Error ldr offset\n");