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Diffstat (limited to 'accel/tcg/cputlb.c')
-rw-r--r--accel/tcg/cputlb.c167
1 files changed, 84 insertions, 83 deletions
diff --git a/accel/tcg/cputlb.c b/accel/tcg/cputlb.c
index fb22048..87e14bd 100644
--- a/accel/tcg/cputlb.c
+++ b/accel/tcg/cputlb.c
@@ -19,15 +19,17 @@
#include "qemu/osdep.h"
#include "qemu/main-loop.h"
+#include "qemu/target-info.h"
#include "accel/tcg/cpu-ops.h"
-#include "exec/exec-all.h"
+#include "accel/tcg/iommu.h"
+#include "accel/tcg/probe.h"
#include "exec/page-protection.h"
-#include "exec/memory.h"
-#include "exec/cpu_ldst.h"
+#include "system/memory.h"
+#include "accel/tcg/cpu-ldst-common.h"
+#include "accel/tcg/cpu-mmu-index.h"
#include "exec/cputlb.h"
#include "exec/tb-flush.h"
-#include "exec/memory-internal.h"
-#include "exec/ram_addr.h"
+#include "system/ram_addr.h"
#include "exec/mmu-access-type.h"
#include "exec/tlb-common.h"
#include "exec/vaddr.h"
@@ -35,18 +37,21 @@
#include "qemu/error-report.h"
#include "exec/log.h"
#include "exec/helper-proto-common.h"
+#include "exec/tlb-flags.h"
#include "qemu/atomic.h"
#include "qemu/atomic128.h"
#include "tb-internal.h"
#include "trace.h"
#include "tb-hash.h"
#include "tb-internal.h"
+#include "tlb-bounds.h"
#include "internal-common.h"
-#include "internal-target.h"
#ifdef CONFIG_PLUGIN
#include "qemu/plugin-memory.h"
#endif
#include "tcg/tcg-ldst.h"
+#include "backend-ldst.h"
+
/* DEBUG defines, enable DEBUG_TLB_LOG to log to the CPU_LOG_MMU target */
/* #define DEBUG_TLB */
@@ -768,19 +773,19 @@ void tlb_flush_range_by_mmuidx(CPUState *cpu, vaddr addr,
assert_cpu_is_self(cpu);
+ /* If no page bits are significant, this devolves to tlb_flush. */
+ if (bits < TARGET_PAGE_BITS) {
+ tlb_flush_by_mmuidx(cpu, idxmap);
+ return;
+ }
/*
* If all bits are significant, and len is small,
* this devolves to tlb_flush_page.
*/
- if (bits >= TARGET_LONG_BITS && len <= TARGET_PAGE_SIZE) {
+ if (len <= TARGET_PAGE_SIZE && bits >= target_long_bits()) {
tlb_flush_page_by_mmuidx(cpu, addr, idxmap);
return;
}
- /* If no page bits are significant, this devolves to tlb_flush. */
- if (bits < TARGET_PAGE_BITS) {
- tlb_flush_by_mmuidx(cpu, idxmap);
- return;
- }
/* This should already be page aligned */
d.addr = addr & TARGET_PAGE_MASK;
@@ -806,19 +811,19 @@ void tlb_flush_range_by_mmuidx_all_cpus_synced(CPUState *src_cpu,
TLBFlushRangeData d, *p;
CPUState *dst_cpu;
+ /* If no page bits are significant, this devolves to tlb_flush. */
+ if (bits < TARGET_PAGE_BITS) {
+ tlb_flush_by_mmuidx_all_cpus_synced(src_cpu, idxmap);
+ return;
+ }
/*
* If all bits are significant, and len is small,
* this devolves to tlb_flush_page.
*/
- if (bits >= TARGET_LONG_BITS && len <= TARGET_PAGE_SIZE) {
+ if (len <= TARGET_PAGE_SIZE && bits >= target_long_bits()) {
tlb_flush_page_by_mmuidx_all_cpus_synced(src_cpu, addr, idxmap);
return;
}
- /* If no page bits are significant, this devolves to tlb_flush. */
- if (bits < TARGET_PAGE_BITS) {
- tlb_flush_by_mmuidx_all_cpus_synced(src_cpu, idxmap);
- return;
- }
/* This should already be page aligned */
d.addr = addr & TARGET_PAGE_MASK;
@@ -882,18 +887,17 @@ void tlb_unprotect_code(ram_addr_t ram_addr)
*
* Called with tlb_c.lock held.
*/
-static void tlb_reset_dirty_range_locked(CPUTLBEntry *tlb_entry,
+static void tlb_reset_dirty_range_locked(CPUTLBEntryFull *full, CPUTLBEntry *ent,
uintptr_t start, uintptr_t length)
{
- uintptr_t addr = tlb_entry->addr_write;
+ const uintptr_t addr = ent->addr_write;
+ int flags = addr | full->slow_flags[MMU_DATA_STORE];
- if ((addr & (TLB_INVALID_MASK | TLB_MMIO |
- TLB_DISCARD_WRITE | TLB_NOTDIRTY)) == 0) {
- addr &= TARGET_PAGE_MASK;
- addr += tlb_entry->addend;
- if ((addr - start) < length) {
- qatomic_set(&tlb_entry->addr_write,
- tlb_entry->addr_write | TLB_NOTDIRTY);
+ flags &= TLB_INVALID_MASK | TLB_MMIO | TLB_DISCARD_WRITE | TLB_NOTDIRTY;
+ if (flags == 0) {
+ uintptr_t host = (addr & TARGET_PAGE_MASK) + ent->addend;
+ if ((host - start) < length) {
+ qatomic_set(&ent->addr_write, addr | TLB_NOTDIRTY);
}
}
}
@@ -912,23 +916,25 @@ static inline void copy_tlb_helper_locked(CPUTLBEntry *d, const CPUTLBEntry *s)
* We must take tlb_c.lock to avoid racing with another vCPU update. The only
* thing actually updated is the target TLB entry ->addr_write flags.
*/
-void tlb_reset_dirty(CPUState *cpu, ram_addr_t start1, ram_addr_t length)
+void tlb_reset_dirty(CPUState *cpu, uintptr_t start, uintptr_t length)
{
int mmu_idx;
qemu_spin_lock(&cpu->neg.tlb.c.lock);
for (mmu_idx = 0; mmu_idx < NB_MMU_MODES; mmu_idx++) {
+ CPUTLBDesc *desc = &cpu->neg.tlb.d[mmu_idx];
+ CPUTLBDescFast *fast = &cpu->neg.tlb.f[mmu_idx];
+ unsigned int n = tlb_n_entries(fast);
unsigned int i;
- unsigned int n = tlb_n_entries(&cpu->neg.tlb.f[mmu_idx]);
for (i = 0; i < n; i++) {
- tlb_reset_dirty_range_locked(&cpu->neg.tlb.f[mmu_idx].table[i],
- start1, length);
+ tlb_reset_dirty_range_locked(&desc->fulltlb[i], &fast->table[i],
+ start, length);
}
for (i = 0; i < CPU_VTLB_SIZE; i++) {
- tlb_reset_dirty_range_locked(&cpu->neg.tlb.d[mmu_idx].vtable[i],
- start1, length);
+ tlb_reset_dirty_range_locked(&desc->vfulltlb[i], &desc->vtable[i],
+ start, length);
}
}
qemu_spin_unlock(&cpu->neg.tlb.c.lock);
@@ -1336,7 +1342,7 @@ static void notdirty_write(CPUState *cpu, vaddr mem_vaddr, unsigned size,
trace_memory_notdirty_write_access(mem_vaddr, ram_addr, size);
if (!cpu_physical_memory_get_dirty_flag(ram_addr, DIRTY_MEMORY_CODE)) {
- tb_invalidate_phys_range_fast(ram_addr, size, retaddr);
+ tb_invalidate_phys_range_fast(cpu, ram_addr, size, retaddr);
}
/*
@@ -1767,6 +1773,9 @@ static bool mmu_lookup(CPUState *cpu, vaddr addr, MemOpIdx oi,
l->page[1].size = l->page[0].size - size0;
l->page[0].size = size0;
+ l->page[1].addr = cpu->cc->tcg_ops->pointer_wrap(cpu, l->mmu_idx,
+ l->page[1].addr, addr);
+
/*
* Lookup both pages, recognizing exceptions from either. If the
* second lookup potentially resized, refresh first CPUTLBEntryFull.
@@ -1865,8 +1874,12 @@ static void *atomic_mmu_lookup(CPUState *cpu, vaddr addr, MemOpIdx oi,
goto stop_the_world;
}
- /* Collect tlb flags for read. */
+ /* Finish collecting tlb flags for both read and write. */
+ full = &cpu->neg.tlb.d[mmu_idx].fulltlb[index];
tlb_addr |= tlbe->addr_read;
+ tlb_addr &= TLB_FLAGS_MASK & ~TLB_FORCE_SLOW;
+ tlb_addr |= full->slow_flags[MMU_DATA_STORE];
+ tlb_addr |= full->slow_flags[MMU_DATA_LOAD];
/* Notice an IO access or a needs-MMU-lookup access */
if (unlikely(tlb_addr & (TLB_MMIO | TLB_DISCARD_WRITE))) {
@@ -1876,13 +1889,12 @@ static void *atomic_mmu_lookup(CPUState *cpu, vaddr addr, MemOpIdx oi,
}
hostaddr = (void *)((uintptr_t)addr + tlbe->addend);
- full = &cpu->neg.tlb.d[mmu_idx].fulltlb[index];
if (unlikely(tlb_addr & TLB_NOTDIRTY)) {
notdirty_write(cpu, addr, size, full, retaddr);
}
- if (unlikely(tlb_addr & TLB_FORCE_SLOW)) {
+ if (unlikely(tlb_addr & TLB_WATCHPOINT)) {
int wp_flags = 0;
if (full->slow_flags[MMU_DATA_STORE] & TLB_WATCHPOINT) {
@@ -1891,10 +1903,8 @@ static void *atomic_mmu_lookup(CPUState *cpu, vaddr addr, MemOpIdx oi,
if (full->slow_flags[MMU_DATA_LOAD] & TLB_WATCHPOINT) {
wp_flags |= BP_MEM_READ;
}
- if (wp_flags) {
- cpu_check_watchpoint(cpu, addr, size,
- full->attrs, wp_flags, retaddr);
- }
+ cpu_check_watchpoint(cpu, addr, size,
+ full->attrs, wp_flags, retaddr);
}
return hostaddr;
@@ -2321,7 +2331,7 @@ static uint8_t do_ld1_mmu(CPUState *cpu, vaddr addr, MemOpIdx oi,
MMULookupLocals l;
bool crosspage;
- cpu_req_mo(TCG_MO_LD_LD | TCG_MO_ST_LD);
+ cpu_req_mo(cpu, TCG_MO_LD_LD | TCG_MO_ST_LD);
crosspage = mmu_lookup(cpu, addr, oi, ra, access_type, &l);
tcg_debug_assert(!crosspage);
@@ -2336,7 +2346,7 @@ static uint16_t do_ld2_mmu(CPUState *cpu, vaddr addr, MemOpIdx oi,
uint16_t ret;
uint8_t a, b;
- cpu_req_mo(TCG_MO_LD_LD | TCG_MO_ST_LD);
+ cpu_req_mo(cpu, TCG_MO_LD_LD | TCG_MO_ST_LD);
crosspage = mmu_lookup(cpu, addr, oi, ra, access_type, &l);
if (likely(!crosspage)) {
return do_ld_2(cpu, &l.page[0], l.mmu_idx, access_type, l.memop, ra);
@@ -2360,7 +2370,7 @@ static uint32_t do_ld4_mmu(CPUState *cpu, vaddr addr, MemOpIdx oi,
bool crosspage;
uint32_t ret;
- cpu_req_mo(TCG_MO_LD_LD | TCG_MO_ST_LD);
+ cpu_req_mo(cpu, TCG_MO_LD_LD | TCG_MO_ST_LD);
crosspage = mmu_lookup(cpu, addr, oi, ra, access_type, &l);
if (likely(!crosspage)) {
return do_ld_4(cpu, &l.page[0], l.mmu_idx, access_type, l.memop, ra);
@@ -2381,7 +2391,7 @@ static uint64_t do_ld8_mmu(CPUState *cpu, vaddr addr, MemOpIdx oi,
bool crosspage;
uint64_t ret;
- cpu_req_mo(TCG_MO_LD_LD | TCG_MO_ST_LD);
+ cpu_req_mo(cpu, TCG_MO_LD_LD | TCG_MO_ST_LD);
crosspage = mmu_lookup(cpu, addr, oi, ra, access_type, &l);
if (likely(!crosspage)) {
return do_ld_8(cpu, &l.page[0], l.mmu_idx, access_type, l.memop, ra);
@@ -2404,7 +2414,7 @@ static Int128 do_ld16_mmu(CPUState *cpu, vaddr addr,
Int128 ret;
int first;
- cpu_req_mo(TCG_MO_LD_LD | TCG_MO_ST_LD);
+ cpu_req_mo(cpu, TCG_MO_LD_LD | TCG_MO_ST_LD);
crosspage = mmu_lookup(cpu, addr, oi, ra, MMU_DATA_LOAD, &l);
if (likely(!crosspage)) {
if (unlikely(l.page[0].flags & TLB_MMIO)) {
@@ -2732,7 +2742,7 @@ static void do_st1_mmu(CPUState *cpu, vaddr addr, uint8_t val,
MMULookupLocals l;
bool crosspage;
- cpu_req_mo(TCG_MO_LD_ST | TCG_MO_ST_ST);
+ cpu_req_mo(cpu, TCG_MO_LD_ST | TCG_MO_ST_ST);
crosspage = mmu_lookup(cpu, addr, oi, ra, MMU_DATA_STORE, &l);
tcg_debug_assert(!crosspage);
@@ -2746,7 +2756,7 @@ static void do_st2_mmu(CPUState *cpu, vaddr addr, uint16_t val,
bool crosspage;
uint8_t a, b;
- cpu_req_mo(TCG_MO_LD_ST | TCG_MO_ST_ST);
+ cpu_req_mo(cpu, TCG_MO_LD_ST | TCG_MO_ST_ST);
crosspage = mmu_lookup(cpu, addr, oi, ra, MMU_DATA_STORE, &l);
if (likely(!crosspage)) {
do_st_2(cpu, &l.page[0], val, l.mmu_idx, l.memop, ra);
@@ -2768,7 +2778,7 @@ static void do_st4_mmu(CPUState *cpu, vaddr addr, uint32_t val,
MMULookupLocals l;
bool crosspage;
- cpu_req_mo(TCG_MO_LD_ST | TCG_MO_ST_ST);
+ cpu_req_mo(cpu, TCG_MO_LD_ST | TCG_MO_ST_ST);
crosspage = mmu_lookup(cpu, addr, oi, ra, MMU_DATA_STORE, &l);
if (likely(!crosspage)) {
do_st_4(cpu, &l.page[0], val, l.mmu_idx, l.memop, ra);
@@ -2789,7 +2799,7 @@ static void do_st8_mmu(CPUState *cpu, vaddr addr, uint64_t val,
MMULookupLocals l;
bool crosspage;
- cpu_req_mo(TCG_MO_LD_ST | TCG_MO_ST_ST);
+ cpu_req_mo(cpu, TCG_MO_LD_ST | TCG_MO_ST_ST);
crosspage = mmu_lookup(cpu, addr, oi, ra, MMU_DATA_STORE, &l);
if (likely(!crosspage)) {
do_st_8(cpu, &l.page[0], val, l.mmu_idx, l.memop, ra);
@@ -2812,7 +2822,7 @@ static void do_st16_mmu(CPUState *cpu, vaddr addr, Int128 val,
uint64_t a, b;
int first;
- cpu_req_mo(TCG_MO_LD_ST | TCG_MO_ST_ST);
+ cpu_req_mo(cpu, TCG_MO_LD_ST | TCG_MO_ST_ST);
crosspage = mmu_lookup(cpu, addr, oi, ra, MMU_DATA_STORE, &l);
if (likely(!crosspage)) {
if (unlikely(l.page[0].flags & TLB_MMIO)) {
@@ -2897,54 +2907,45 @@ static void do_st16_mmu(CPUState *cpu, vaddr addr, Int128 val,
/* Code access functions. */
-uint32_t cpu_ldub_code(CPUArchState *env, abi_ptr addr)
-{
- CPUState *cs = env_cpu(env);
- MemOpIdx oi = make_memop_idx(MO_UB, cpu_mmu_index(cs, true));
- return do_ld1_mmu(cs, addr, oi, 0, MMU_INST_FETCH);
-}
-
-uint32_t cpu_lduw_code(CPUArchState *env, abi_ptr addr)
-{
- CPUState *cs = env_cpu(env);
- MemOpIdx oi = make_memop_idx(MO_TEUW, cpu_mmu_index(cs, true));
- return do_ld2_mmu(cs, addr, oi, 0, MMU_INST_FETCH);
-}
-
-uint32_t cpu_ldl_code(CPUArchState *env, abi_ptr addr)
-{
- CPUState *cs = env_cpu(env);
- MemOpIdx oi = make_memop_idx(MO_TEUL, cpu_mmu_index(cs, true));
- return do_ld4_mmu(cs, addr, oi, 0, MMU_INST_FETCH);
-}
-
-uint64_t cpu_ldq_code(CPUArchState *env, abi_ptr addr)
-{
- CPUState *cs = env_cpu(env);
- MemOpIdx oi = make_memop_idx(MO_TEUQ, cpu_mmu_index(cs, true));
- return do_ld8_mmu(cs, addr, oi, 0, MMU_INST_FETCH);
-}
-
-uint8_t cpu_ldb_code_mmu(CPUArchState *env, abi_ptr addr,
+uint8_t cpu_ldb_code_mmu(CPUArchState *env, vaddr addr,
MemOpIdx oi, uintptr_t retaddr)
{
return do_ld1_mmu(env_cpu(env), addr, oi, retaddr, MMU_INST_FETCH);
}
-uint16_t cpu_ldw_code_mmu(CPUArchState *env, abi_ptr addr,
+uint16_t cpu_ldw_code_mmu(CPUArchState *env, vaddr addr,
MemOpIdx oi, uintptr_t retaddr)
{
return do_ld2_mmu(env_cpu(env), addr, oi, retaddr, MMU_INST_FETCH);
}
-uint32_t cpu_ldl_code_mmu(CPUArchState *env, abi_ptr addr,
+uint32_t cpu_ldl_code_mmu(CPUArchState *env, vaddr addr,
MemOpIdx oi, uintptr_t retaddr)
{
return do_ld4_mmu(env_cpu(env), addr, oi, retaddr, MMU_INST_FETCH);
}
-uint64_t cpu_ldq_code_mmu(CPUArchState *env, abi_ptr addr,
+uint64_t cpu_ldq_code_mmu(CPUArchState *env, vaddr addr,
MemOpIdx oi, uintptr_t retaddr)
{
return do_ld8_mmu(env_cpu(env), addr, oi, retaddr, MMU_INST_FETCH);
}
+
+/*
+ * Common pointer_wrap implementations.
+ */
+
+/*
+ * To be used for strict alignment targets.
+ * Because no accesses are unaligned, no accesses wrap either.
+ */
+vaddr cpu_pointer_wrap_notreached(CPUState *cs, int idx, vaddr res, vaddr base)
+{
+ g_assert_not_reached();
+}
+
+/* To be used for strict 32-bit targets. */
+vaddr cpu_pointer_wrap_uint32(CPUState *cs, int idx, vaddr res, vaddr base)
+{
+ return (uint32_t)res;
+}
generated by cgit v1.1 at 2025-07-03 01:42:30 +0000