4 * Generate helpers used by TCG for qemu_ld/st ops and code load
7 * Included from target op helpers and exec.c.
9 * Copyright (c) 2003 Fabrice Bellard
11 * This library is free software; you can redistribute it and/or
12 * modify it under the terms of the GNU Lesser General Public
13 * License as published by the Free Software Foundation; either
14 * version 2 of the License, or (at your option) any later version.
16 * This library is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
19 * Lesser General Public License for more details.
21 * You should have received a copy of the GNU Lesser General Public
22 * License along with this library; if not, see <http://www.gnu.org/licenses/>.
24 #include "qemu-timer.h"
27 #define DATA_SIZE (1 << SHIFT)
32 #define DATA_TYPE uint64_t
36 #define DATA_TYPE uint32_t
40 #define DATA_TYPE uint16_t
44 #define DATA_TYPE uint8_t
46 #error unsupported data size
49 #ifdef SOFTMMU_CODE_ACCESS
50 #define READ_ACCESS_TYPE 2
51 #define ADDR_READ addr_code
53 #define READ_ACCESS_TYPE 0
54 #define ADDR_READ addr_read
57 #ifndef CONFIG_TCG_PASS_AREG0
61 #define HELPER_PREFIX __
63 #define ENV_PARAM CPUArchState *env,
65 #define CPU_PREFIX cpu_
66 #define HELPER_PREFIX helper_
69 static DATA_TYPE glue(glue(slow_ld, SUFFIX), MMUSUFFIX)(ENV_PARAM
73 static inline DATA_TYPE glue(io_read, SUFFIX)(ENV_PARAM
74 target_phys_addr_t physaddr,
79 MemoryRegion *mr = iotlb_to_region(physaddr);
81 physaddr = (physaddr & TARGET_PAGE_MASK) + addr;
82 env->mem_io_pc = (unsigned long)retaddr;
83 if (mr != &io_mem_ram && mr != &io_mem_rom
84 && mr != &io_mem_unassigned
85 && mr != &io_mem_notdirty
87 cpu_io_recompile(env, retaddr);
90 env->mem_io_vaddr = addr;
92 res = io_mem_read(mr, physaddr, 1 << SHIFT);
94 #ifdef TARGET_WORDS_BIGENDIAN
95 res = io_mem_read(mr, physaddr, 4) << 32;
96 res |= io_mem_read(mr, physaddr + 4, 4);
98 res = io_mem_read(mr, physaddr, 4);
99 res |= io_mem_read(mr, physaddr + 4, 4) << 32;
101 #endif /* SHIFT > 2 */
105 /* handle all cases except unaligned access which span two pages */
107 glue(glue(glue(HELPER_PREFIX, ld), SUFFIX), MMUSUFFIX)(ENV_PARAM
113 target_ulong tlb_addr;
114 target_phys_addr_t ioaddr;
115 unsigned long addend;
118 /* test if there is match for unaligned or IO access */
119 /* XXX: could done more in memory macro in a non portable way */
120 index = (addr >> TARGET_PAGE_BITS) & (CPU_TLB_SIZE - 1);
122 tlb_addr = env->tlb_table[mmu_idx][index].ADDR_READ;
123 if ((addr & TARGET_PAGE_MASK) == (tlb_addr & (TARGET_PAGE_MASK | TLB_INVALID_MASK))) {
124 if (tlb_addr & ~TARGET_PAGE_MASK) {
126 if ((addr & (DATA_SIZE - 1)) != 0)
127 goto do_unaligned_access;
129 ioaddr = env->iotlb[mmu_idx][index];
130 res = glue(io_read, SUFFIX)(ENV_VAR ioaddr, addr, retaddr);
131 } else if (((addr & ~TARGET_PAGE_MASK) + DATA_SIZE - 1) >= TARGET_PAGE_SIZE) {
132 /* slow unaligned access (it spans two pages or IO) */
136 do_unaligned_access(ENV_VAR addr, READ_ACCESS_TYPE, mmu_idx, retaddr);
138 res = glue(glue(slow_ld, SUFFIX), MMUSUFFIX)(ENV_VAR addr,
141 /* unaligned/aligned access in the same page */
143 if ((addr & (DATA_SIZE - 1)) != 0) {
145 do_unaligned_access(ENV_VAR addr, READ_ACCESS_TYPE, mmu_idx, retaddr);
148 addend = env->tlb_table[mmu_idx][index].addend;
149 res = glue(glue(ld, USUFFIX), _raw)((uint8_t *)(long)(addr+addend));
152 /* the page is not in the TLB : fill it */
155 if ((addr & (DATA_SIZE - 1)) != 0)
156 do_unaligned_access(ENV_VAR addr, READ_ACCESS_TYPE, mmu_idx, retaddr);
158 tlb_fill(env, addr, READ_ACCESS_TYPE, mmu_idx, retaddr);
164 /* handle all unaligned cases */
166 glue(glue(slow_ld, SUFFIX), MMUSUFFIX)(ENV_PARAM
171 DATA_TYPE res, res1, res2;
173 target_phys_addr_t ioaddr;
174 unsigned long addend;
175 target_ulong tlb_addr, addr1, addr2;
177 index = (addr >> TARGET_PAGE_BITS) & (CPU_TLB_SIZE - 1);
179 tlb_addr = env->tlb_table[mmu_idx][index].ADDR_READ;
180 if ((addr & TARGET_PAGE_MASK) == (tlb_addr & (TARGET_PAGE_MASK | TLB_INVALID_MASK))) {
181 if (tlb_addr & ~TARGET_PAGE_MASK) {
183 if ((addr & (DATA_SIZE - 1)) != 0)
184 goto do_unaligned_access;
185 ioaddr = env->iotlb[mmu_idx][index];
186 res = glue(io_read, SUFFIX)(ENV_VAR ioaddr, addr, retaddr);
187 } else if (((addr & ~TARGET_PAGE_MASK) + DATA_SIZE - 1) >= TARGET_PAGE_SIZE) {
189 /* slow unaligned access (it spans two pages) */
190 addr1 = addr & ~(DATA_SIZE - 1);
191 addr2 = addr1 + DATA_SIZE;
192 res1 = glue(glue(slow_ld, SUFFIX), MMUSUFFIX)(ENV_VAR addr1,
194 res2 = glue(glue(slow_ld, SUFFIX), MMUSUFFIX)(ENV_VAR addr2,
196 shift = (addr & (DATA_SIZE - 1)) * 8;
197 #ifdef TARGET_WORDS_BIGENDIAN
198 res = (res1 << shift) | (res2 >> ((DATA_SIZE * 8) - shift));
200 res = (res1 >> shift) | (res2 << ((DATA_SIZE * 8) - shift));
202 res = (DATA_TYPE)res;
204 /* unaligned/aligned access in the same page */
205 addend = env->tlb_table[mmu_idx][index].addend;
206 res = glue(glue(ld, USUFFIX), _raw)((uint8_t *)(long)(addr+addend));
209 /* the page is not in the TLB : fill it */
210 tlb_fill(env, addr, READ_ACCESS_TYPE, mmu_idx, retaddr);
216 #ifndef SOFTMMU_CODE_ACCESS
218 static void glue(glue(slow_st, SUFFIX), MMUSUFFIX)(ENV_PARAM
224 static inline void glue(io_write, SUFFIX)(ENV_PARAM
225 target_phys_addr_t physaddr,
230 MemoryRegion *mr = iotlb_to_region(physaddr);
232 physaddr = (physaddr & TARGET_PAGE_MASK) + addr;
233 if (mr != &io_mem_ram && mr != &io_mem_rom
234 && mr != &io_mem_unassigned
235 && mr != &io_mem_notdirty
236 && !can_do_io(env)) {
237 cpu_io_recompile(env, retaddr);
240 env->mem_io_vaddr = addr;
241 env->mem_io_pc = (unsigned long)retaddr;
243 io_mem_write(mr, physaddr, val, 1 << SHIFT);
245 #ifdef TARGET_WORDS_BIGENDIAN
246 io_mem_write(mr, physaddr, (val >> 32), 4);
247 io_mem_write(mr, physaddr + 4, (uint32_t)val, 4);
249 io_mem_write(mr, physaddr, (uint32_t)val, 4);
250 io_mem_write(mr, physaddr + 4, val >> 32, 4);
252 #endif /* SHIFT > 2 */
255 void glue(glue(glue(HELPER_PREFIX, st), SUFFIX), MMUSUFFIX)(ENV_PARAM
260 target_phys_addr_t ioaddr;
261 unsigned long addend;
262 target_ulong tlb_addr;
266 index = (addr >> TARGET_PAGE_BITS) & (CPU_TLB_SIZE - 1);
268 tlb_addr = env->tlb_table[mmu_idx][index].addr_write;
269 if ((addr & TARGET_PAGE_MASK) == (tlb_addr & (TARGET_PAGE_MASK | TLB_INVALID_MASK))) {
270 if (tlb_addr & ~TARGET_PAGE_MASK) {
272 if ((addr & (DATA_SIZE - 1)) != 0)
273 goto do_unaligned_access;
275 ioaddr = env->iotlb[mmu_idx][index];
276 glue(io_write, SUFFIX)(ENV_VAR ioaddr, val, addr, retaddr);
277 } else if (((addr & ~TARGET_PAGE_MASK) + DATA_SIZE - 1) >= TARGET_PAGE_SIZE) {
281 do_unaligned_access(ENV_VAR addr, 1, mmu_idx, retaddr);
283 glue(glue(slow_st, SUFFIX), MMUSUFFIX)(ENV_VAR addr, val,
286 /* aligned/unaligned access in the same page */
288 if ((addr & (DATA_SIZE - 1)) != 0) {
290 do_unaligned_access(ENV_VAR addr, 1, mmu_idx, retaddr);
293 addend = env->tlb_table[mmu_idx][index].addend;
294 glue(glue(st, SUFFIX), _raw)((uint8_t *)(long)(addr+addend), val);
297 /* the page is not in the TLB : fill it */
300 if ((addr & (DATA_SIZE - 1)) != 0)
301 do_unaligned_access(ENV_VAR addr, 1, mmu_idx, retaddr);
303 tlb_fill(env, addr, 1, mmu_idx, retaddr);
308 /* handles all unaligned cases */
309 static void glue(glue(slow_st, SUFFIX), MMUSUFFIX)(ENV_PARAM
315 target_phys_addr_t ioaddr;
316 unsigned long addend;
317 target_ulong tlb_addr;
320 index = (addr >> TARGET_PAGE_BITS) & (CPU_TLB_SIZE - 1);
322 tlb_addr = env->tlb_table[mmu_idx][index].addr_write;
323 if ((addr & TARGET_PAGE_MASK) == (tlb_addr & (TARGET_PAGE_MASK | TLB_INVALID_MASK))) {
324 if (tlb_addr & ~TARGET_PAGE_MASK) {
326 if ((addr & (DATA_SIZE - 1)) != 0)
327 goto do_unaligned_access;
328 ioaddr = env->iotlb[mmu_idx][index];
329 glue(io_write, SUFFIX)(ENV_VAR ioaddr, val, addr, retaddr);
330 } else if (((addr & ~TARGET_PAGE_MASK) + DATA_SIZE - 1) >= TARGET_PAGE_SIZE) {
332 /* XXX: not efficient, but simple */
333 /* Note: relies on the fact that tlb_fill() does not remove the
334 * previous page from the TLB cache. */
335 for(i = DATA_SIZE - 1; i >= 0; i--) {
336 #ifdef TARGET_WORDS_BIGENDIAN
337 glue(slow_stb, MMUSUFFIX)(ENV_VAR addr + i,
338 val >> (((DATA_SIZE - 1) * 8) - (i * 8)),
341 glue(slow_stb, MMUSUFFIX)(ENV_VAR addr + i,
347 /* aligned/unaligned access in the same page */
348 addend = env->tlb_table[mmu_idx][index].addend;
349 glue(glue(st, SUFFIX), _raw)((uint8_t *)(long)(addr+addend), val);
352 /* the page is not in the TLB : fill it */
353 tlb_fill(env, addr, 1, mmu_idx, retaddr);
358 #endif /* !defined(SOFTMMU_CODE_ACCESS) */
360 #undef READ_ACCESS_TYPE