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Diffstat (limited to 'include/exec/softmmu_template.h')
-rw-r--r--include/exec/softmmu_template.h287
1 files changed, 104 insertions, 183 deletions
diff --git a/include/exec/softmmu_template.h b/include/exec/softmmu_template.h
index 7d8bcb5c97..eaca9e1035 100644
--- a/include/exec/softmmu_template.h
+++ b/include/exec/softmmu_template.h
@@ -54,10 +54,6 @@
#define ADDR_READ addr_read
#endif
-static DATA_TYPE glue(glue(slow_ld, SUFFIX), MMUSUFFIX)(CPUArchState *env,
- target_ulong addr,
- int mmu_idx,
- uintptr_t retaddr);
static inline DATA_TYPE glue(io_read, SUFFIX)(CPUArchState *env,
hwaddr physaddr,
target_ulong addr,
@@ -86,52 +82,67 @@ glue(glue(helper_ret_ld, SUFFIX), MMUSUFFIX)(CPUArchState *env,
target_ulong addr, int mmu_idx,
uintptr_t retaddr)
{
- DATA_TYPE res;
- int index;
- target_ulong tlb_addr;
- hwaddr ioaddr;
+ int index = (addr >> TARGET_PAGE_BITS) & (CPU_TLB_SIZE - 1);
+ target_ulong tlb_addr = env->tlb_table[mmu_idx][index].ADDR_READ;
+ uintptr_t haddr;
- /* test if there is match for unaligned or IO access */
- /* XXX: could done more in memory macro in a non portable way */
- index = (addr >> TARGET_PAGE_BITS) & (CPU_TLB_SIZE - 1);
- redo:
- tlb_addr = env->tlb_table[mmu_idx][index].ADDR_READ;
- if ((addr & TARGET_PAGE_MASK) == (tlb_addr & (TARGET_PAGE_MASK | TLB_INVALID_MASK))) {
- if (tlb_addr & ~TARGET_PAGE_MASK) {
- /* IO access */
- if ((addr & (DATA_SIZE - 1)) != 0)
- goto do_unaligned_access;
- ioaddr = env->iotlb[mmu_idx][index];
- res = glue(io_read, SUFFIX)(env, ioaddr, addr, retaddr);
- } else if (((addr & ~TARGET_PAGE_MASK) + DATA_SIZE - 1) >= TARGET_PAGE_SIZE) {
- /* slow unaligned access (it spans two pages or IO) */
- do_unaligned_access:
+ /* If the TLB entry is for a different page, reload and try again. */
+ if ((addr & TARGET_PAGE_MASK)
+ != (tlb_addr & (TARGET_PAGE_MASK | TLB_INVALID_MASK))) {
#ifdef ALIGNED_ONLY
+ if ((addr & (DATA_SIZE - 1)) != 0) {
do_unaligned_access(env, addr, READ_ACCESS_TYPE, mmu_idx, retaddr);
+ }
#endif
- res = glue(glue(slow_ld, SUFFIX), MMUSUFFIX)(env, addr,
- mmu_idx, retaddr);
- } else {
- /* unaligned/aligned access in the same page */
- uintptr_t addend;
-#ifdef ALIGNED_ONLY
- if ((addr & (DATA_SIZE - 1)) != 0) {
- do_unaligned_access(env, addr, READ_ACCESS_TYPE, mmu_idx, retaddr);
- }
-#endif
- addend = env->tlb_table[mmu_idx][index].addend;
- res = glue(glue(ld, USUFFIX), _raw)((uint8_t *)(intptr_t)
- (addr + addend));
+ tlb_fill(env, addr, READ_ACCESS_TYPE, mmu_idx, retaddr);
+ tlb_addr = env->tlb_table[mmu_idx][index].ADDR_READ;
+ }
+
+ /* Handle an IO access. */
+ if (unlikely(tlb_addr & ~TARGET_PAGE_MASK)) {
+ hwaddr ioaddr;
+ if ((addr & (DATA_SIZE - 1)) != 0) {
+ goto do_unaligned_access;
}
- } else {
+ ioaddr = env->iotlb[mmu_idx][index];
+ return glue(io_read, SUFFIX)(env, ioaddr, addr, retaddr);
+ }
+
+ /* Handle slow unaligned access (it spans two pages or IO). */
+ if (DATA_SIZE > 1
+ && unlikely((addr & ~TARGET_PAGE_MASK) + DATA_SIZE - 1
+ >= TARGET_PAGE_SIZE)) {
+ target_ulong addr1, addr2;
+ DATA_TYPE res1, res2, res;
+ unsigned shift;
+ do_unaligned_access:
#ifdef ALIGNED_ONLY
- if ((addr & (DATA_SIZE - 1)) != 0)
- do_unaligned_access(env, addr, READ_ACCESS_TYPE, mmu_idx, retaddr);
+ do_unaligned_access(env, addr, READ_ACCESS_TYPE, mmu_idx, retaddr);
#endif
- tlb_fill(env, addr, READ_ACCESS_TYPE, mmu_idx, retaddr);
- goto redo;
+ addr1 = addr & ~(DATA_SIZE - 1);
+ addr2 = addr1 + DATA_SIZE;
+ res1 = glue(glue(helper_ret_ld, SUFFIX), MMUSUFFIX)(env, addr1,
+ mmu_idx, retaddr);
+ res2 = glue(glue(helper_ret_ld, SUFFIX), MMUSUFFIX)(env, addr2,
+ mmu_idx, retaddr);
+ shift = (addr & (DATA_SIZE - 1)) * 8;
+#ifdef TARGET_WORDS_BIGENDIAN
+ res = (res1 << shift) | (res2 >> ((DATA_SIZE * 8) - shift));
+#else
+ res = (res1 >> shift) | (res2 << ((DATA_SIZE * 8) - shift));
+#endif
+ return res;
+ }
+
+ /* Handle aligned access or unaligned access in the same page. */
+#ifdef ALIGNED_ONLY
+ if ((addr & (DATA_SIZE - 1)) != 0) {
+ do_unaligned_access(env, addr, READ_ACCESS_TYPE, mmu_idx, retaddr);
}
- return res;
+#endif
+
+ haddr = addr + env->tlb_table[mmu_idx][index].addend;
+ return glue(glue(ld, USUFFIX), _raw)((uint8_t *)haddr);
}
DATA_TYPE
@@ -142,66 +153,8 @@ glue(glue(helper_ld, SUFFIX), MMUSUFFIX)(CPUArchState *env, target_ulong addr,
GETPC_EXT());
}
-/* handle all unaligned cases */
-static DATA_TYPE
-glue(glue(slow_ld, SUFFIX), MMUSUFFIX)(CPUArchState *env,
- target_ulong addr,
- int mmu_idx,
- uintptr_t retaddr)
-{
- DATA_TYPE res, res1, res2;
- int index, shift;
- hwaddr ioaddr;
- target_ulong tlb_addr, addr1, addr2;
-
- index = (addr >> TARGET_PAGE_BITS) & (CPU_TLB_SIZE - 1);
- redo:
- tlb_addr = env->tlb_table[mmu_idx][index].ADDR_READ;
- if ((addr & TARGET_PAGE_MASK) == (tlb_addr & (TARGET_PAGE_MASK | TLB_INVALID_MASK))) {
- if (tlb_addr & ~TARGET_PAGE_MASK) {
- /* IO access */
- if ((addr & (DATA_SIZE - 1)) != 0)
- goto do_unaligned_access;
- ioaddr = env->iotlb[mmu_idx][index];
- res = glue(io_read, SUFFIX)(env, ioaddr, addr, retaddr);
- } else if (((addr & ~TARGET_PAGE_MASK) + DATA_SIZE - 1) >= TARGET_PAGE_SIZE) {
- do_unaligned_access:
- /* slow unaligned access (it spans two pages) */
- addr1 = addr & ~(DATA_SIZE - 1);
- addr2 = addr1 + DATA_SIZE;
- res1 = glue(glue(slow_ld, SUFFIX), MMUSUFFIX)(env, addr1,
- mmu_idx, retaddr);
- res2 = glue(glue(slow_ld, SUFFIX), MMUSUFFIX)(env, addr2,
- mmu_idx, retaddr);
- shift = (addr & (DATA_SIZE - 1)) * 8;
-#ifdef TARGET_WORDS_BIGENDIAN
- res = (res1 << shift) | (res2 >> ((DATA_SIZE * 8) - shift));
-#else
- res = (res1 >> shift) | (res2 << ((DATA_SIZE * 8) - shift));
-#endif
- res = (DATA_TYPE)res;
- } else {
- /* unaligned/aligned access in the same page */
- uintptr_t addend = env->tlb_table[mmu_idx][index].addend;
- res = glue(glue(ld, USUFFIX), _raw)((uint8_t *)(intptr_t)
- (addr + addend));
- }
- } else {
- /* the page is not in the TLB : fill it */
- tlb_fill(env, addr, READ_ACCESS_TYPE, mmu_idx, retaddr);
- goto redo;
- }
- return res;
-}
-
#ifndef SOFTMMU_CODE_ACCESS
-static void glue(glue(slow_st, SUFFIX), MMUSUFFIX)(CPUArchState *env,
- target_ulong addr,
- DATA_TYPE val,
- int mmu_idx,
- uintptr_t retaddr);
-
static inline void glue(io_write, SUFFIX)(CPUArchState *env,
hwaddr physaddr,
DATA_TYPE val,
@@ -225,48 +178,66 @@ glue(glue(helper_ret_st, SUFFIX), MMUSUFFIX)(CPUArchState *env,
target_ulong addr, DATA_TYPE val,
int mmu_idx, uintptr_t retaddr)
{
- hwaddr ioaddr;
- target_ulong tlb_addr;
- int index;
+ int index = (addr >> TARGET_PAGE_BITS) & (CPU_TLB_SIZE - 1);
+ target_ulong tlb_addr = env->tlb_table[mmu_idx][index].addr_write;
+ uintptr_t haddr;
- index = (addr >> TARGET_PAGE_BITS) & (CPU_TLB_SIZE - 1);
- redo:
- tlb_addr = env->tlb_table[mmu_idx][index].addr_write;
- if ((addr & TARGET_PAGE_MASK) == (tlb_addr & (TARGET_PAGE_MASK | TLB_INVALID_MASK))) {
- if (tlb_addr & ~TARGET_PAGE_MASK) {
- /* IO access */
- if ((addr & (DATA_SIZE - 1)) != 0)
- goto do_unaligned_access;
- ioaddr = env->iotlb[mmu_idx][index];
- glue(io_write, SUFFIX)(env, ioaddr, val, addr, retaddr);
- } else if (((addr & ~TARGET_PAGE_MASK) + DATA_SIZE - 1) >= TARGET_PAGE_SIZE) {
- do_unaligned_access:
+ /* If the TLB entry is for a different page, reload and try again. */
+ if ((addr & TARGET_PAGE_MASK)
+ != (tlb_addr & (TARGET_PAGE_MASK | TLB_INVALID_MASK))) {
#ifdef ALIGNED_ONLY
+ if ((addr & (DATA_SIZE - 1)) != 0) {
do_unaligned_access(env, addr, 1, mmu_idx, retaddr);
+ }
#endif
- glue(glue(slow_st, SUFFIX), MMUSUFFIX)(env, addr, val,
- mmu_idx, retaddr);
- } else {
- /* aligned/unaligned access in the same page */
- uintptr_t addend;
+ tlb_fill(env, addr, 1, mmu_idx, retaddr);
+ tlb_addr = env->tlb_table[mmu_idx][index].addr_write;
+ }
+
+ /* Handle an IO access. */
+ if (unlikely(tlb_addr & ~TARGET_PAGE_MASK)) {
+ hwaddr ioaddr;
+ if ((addr & (DATA_SIZE - 1)) != 0) {
+ goto do_unaligned_access;
+ }
+ ioaddr = env->iotlb[mmu_idx][index];
+ glue(io_write, SUFFIX)(env, ioaddr, val, addr, retaddr);
+ return;
+ }
+
+ /* Handle slow unaligned access (it spans two pages or IO). */
+ if (DATA_SIZE > 1
+ && unlikely((addr & ~TARGET_PAGE_MASK) + DATA_SIZE - 1
+ >= TARGET_PAGE_SIZE)) {
+ int i;
+ do_unaligned_access:
#ifdef ALIGNED_ONLY
- if ((addr & (DATA_SIZE - 1)) != 0) {
- do_unaligned_access(env, addr, 1, mmu_idx, retaddr);
- }
+ do_unaligned_access(env, addr, 1, mmu_idx, retaddr);
+#endif
+ /* XXX: not efficient, but simple */
+ /* Note: relies on the fact that tlb_fill() does not remove the
+ * previous page from the TLB cache. */
+ for (i = DATA_SIZE - 1; i >= 0; i--) {
+#ifdef TARGET_WORDS_BIGENDIAN
+ uint8_t val8 = val >> (((DATA_SIZE - 1) * 8) - (i * 8));
+#else
+ uint8_t val8 = val >> (i * 8);
#endif
- addend = env->tlb_table[mmu_idx][index].addend;
- glue(glue(st, SUFFIX), _raw)((uint8_t *)(intptr_t)
- (addr + addend), val);
+ glue(helper_ret_stb, MMUSUFFIX)(env, addr + i, val8,
+ mmu_idx, retaddr);
}
- } else {
- /* the page is not in the TLB : fill it */
+ return;
+ }
+
+ /* Handle aligned access or unaligned access in the same page. */
#ifdef ALIGNED_ONLY
- if ((addr & (DATA_SIZE - 1)) != 0)
- do_unaligned_access(env, addr, 1, mmu_idx, retaddr);
-#endif
- tlb_fill(env, addr, 1, mmu_idx, retaddr);
- goto redo;
+ if ((addr & (DATA_SIZE - 1)) != 0) {
+ do_unaligned_access(env, addr, 1, mmu_idx, retaddr);
}
+#endif
+
+ haddr = addr + env->tlb_table[mmu_idx][index].addend;
+ glue(glue(st, SUFFIX), _raw)((uint8_t *)haddr, val);
}
void
@@ -277,56 +248,6 @@ glue(glue(helper_st, SUFFIX), MMUSUFFIX)(CPUArchState *env, target_ulong addr,
GETPC_EXT());
}
-/* handles all unaligned cases */
-static void glue(glue(slow_st, SUFFIX), MMUSUFFIX)(CPUArchState *env,
- target_ulong addr,
- DATA_TYPE val,
- int mmu_idx,
- uintptr_t retaddr)
-{
- hwaddr ioaddr;
- target_ulong tlb_addr;
- int index, i;
-
- index = (addr >> TARGET_PAGE_BITS) & (CPU_TLB_SIZE - 1);
- redo:
- tlb_addr = env->tlb_table[mmu_idx][index].addr_write;
- if ((addr & TARGET_PAGE_MASK) == (tlb_addr & (TARGET_PAGE_MASK | TLB_INVALID_MASK))) {
- if (tlb_addr & ~TARGET_PAGE_MASK) {
- /* IO access */
- if ((addr & (DATA_SIZE - 1)) != 0)
- goto do_unaligned_access;
- ioaddr = env->iotlb[mmu_idx][index];
- glue(io_write, SUFFIX)(env, ioaddr, val, addr, retaddr);
- } else if (((addr & ~TARGET_PAGE_MASK) + DATA_SIZE - 1) >= TARGET_PAGE_SIZE) {
- do_unaligned_access:
- /* XXX: not efficient, but simple */
- /* Note: relies on the fact that tlb_fill() does not remove the
- * previous page from the TLB cache. */
- for(i = DATA_SIZE - 1; i >= 0; i--) {
-#ifdef TARGET_WORDS_BIGENDIAN
- glue(slow_stb, MMUSUFFIX)(env, addr + i,
- val >> (((DATA_SIZE - 1) * 8) - (i * 8)),
- mmu_idx, retaddr);
-#else
- glue(slow_stb, MMUSUFFIX)(env, addr + i,
- val >> (i * 8),
- mmu_idx, retaddr);
-#endif
- }
- } else {
- /* aligned/unaligned access in the same page */
- uintptr_t addend = env->tlb_table[mmu_idx][index].addend;
- glue(glue(st, SUFFIX), _raw)((uint8_t *)(intptr_t)
- (addr + addend), val);
- }
- } else {
- /* the page is not in the TLB : fill it */
- tlb_fill(env, addr, 1, mmu_idx, retaddr);
- goto redo;
- }
-}
-
#endif /* !defined(SOFTMMU_CODE_ACCESS) */
#undef READ_ACCESS_TYPE
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-23 17:29:41 +0000