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");