diff options
Diffstat (limited to 'accel/tcg/user-exec.c')
| -rw-r--r-- | accel/tcg/user-exec.c | 145 |
1 files changed, 83 insertions, 62 deletions
diff --git a/accel/tcg/user-exec.c b/accel/tcg/user-exec.c index 5eef8e7f18..f25d80e2dc 100644 --- a/accel/tcg/user-exec.c +++ b/accel/tcg/user-exec.c @@ -19,19 +19,20 @@ #include "qemu/osdep.h" #include "accel/tcg/cpu-ops.h" #include "disas/disas.h" -#include "cpu.h" #include "exec/vaddr.h" -#include "exec/exec-all.h" #include "exec/tlb-flags.h" #include "tcg/tcg.h" #include "qemu/bitops.h" #include "qemu/rcu.h" -#include "accel/tcg/cpu-ldst.h" +#include "accel/tcg/cpu-ldst-common.h" +#include "accel/tcg/helper-retaddr.h" +#include "accel/tcg/probe.h" #include "user/cpu_loop.h" +#include "user/guest-host.h" #include "qemu/main-loop.h" #include "user/page-protection.h" #include "exec/page-protection.h" -#include "exec/helper-proto.h" +#include "exec/helper-proto-common.h" #include "qemu/atomic128.h" #include "qemu/bswap.h" #include "qemu/int128.h" @@ -39,7 +40,6 @@ #include "tcg/tcg-ldst.h" #include "backend-ldst.h" #include "internal-common.h" -#include "internal-target.h" #include "tb-internal.h" __thread uintptr_t helper_retaddr; @@ -126,9 +126,9 @@ MMUAccessType adjust_signal_pc(uintptr_t *pc, bool is_write) * guest, we'd end up in an infinite loop of retrying the faulting access. */ bool handle_sigsegv_accerr_write(CPUState *cpu, sigset_t *old_set, - uintptr_t host_pc, abi_ptr guest_addr) + uintptr_t host_pc, vaddr guest_addr) { - switch (page_unprotect(guest_addr, host_pc)) { + switch (page_unprotect(cpu, guest_addr, host_pc)) { case 0: /* * Fault not caused by a page marked unwritable to protect @@ -162,7 +162,7 @@ typedef struct PageFlagsNode { static IntervalTreeRoot pageflags_root; -static PageFlagsNode *pageflags_find(target_ulong start, target_ulong last) +static PageFlagsNode *pageflags_find(vaddr start, vaddr last) { IntervalTreeNode *n; @@ -170,8 +170,7 @@ static PageFlagsNode *pageflags_find(target_ulong start, target_ulong last) return n ? container_of(n, PageFlagsNode, itree) : NULL; } -static PageFlagsNode *pageflags_next(PageFlagsNode *p, target_ulong start, - target_ulong last) +static PageFlagsNode *pageflags_next(PageFlagsNode *p, vaddr start, vaddr last) { IntervalTreeNode *n; @@ -200,13 +199,22 @@ int walk_memory_regions(void *priv, walk_memory_regions_fn fn) return rc; } -static int dump_region(void *priv, target_ulong start, - target_ulong end, unsigned long prot) +static int dump_region(void *opaque, vaddr start, vaddr end, int prot) { - FILE *f = (FILE *)priv; + FILE *f = opaque; + uint64_t mask; + int width; - fprintf(f, TARGET_FMT_lx"-"TARGET_FMT_lx" "TARGET_FMT_lx" %c%c%c\n", - start, end, end - start, + if (guest_addr_max <= UINT32_MAX) { + mask = UINT32_MAX, width = 8; + } else { + mask = UINT64_MAX, width = 16; + } + + fprintf(f, "%0*" PRIx64 "-%0*" PRIx64 " %0*" PRIx64 " %c%c%c\n", + width, start & mask, + width, end & mask, + width, (end - start) & mask, ((prot & PAGE_READ) ? 'r' : '-'), ((prot & PAGE_WRITE) ? 'w' : '-'), ((prot & PAGE_EXEC) ? 'x' : '-')); @@ -216,14 +224,14 @@ static int dump_region(void *priv, target_ulong start, /* dump memory mappings */ void page_dump(FILE *f) { - const int length = sizeof(target_ulong) * 2; + int width = guest_addr_max <= UINT32_MAX ? 8 : 16; fprintf(f, "%-*s %-*s %-*s %s\n", - length, "start", length, "end", length, "size", "prot"); + width, "start", width, "end", width, "size", "prot"); walk_memory_regions(f, dump_region); } -int page_get_flags(target_ulong address) +int page_get_flags(vaddr address) { PageFlagsNode *p = pageflags_find(address, address); @@ -246,7 +254,7 @@ int page_get_flags(target_ulong address) } /* A subroutine of page_set_flags: insert a new node for [start,last]. */ -static void pageflags_create(target_ulong start, target_ulong last, int flags) +static void pageflags_create(vaddr start, vaddr last, int flags) { PageFlagsNode *p = g_new(PageFlagsNode, 1); @@ -257,13 +265,13 @@ static void pageflags_create(target_ulong start, target_ulong last, int flags) } /* A subroutine of page_set_flags: remove everything in [start,last]. */ -static bool pageflags_unset(target_ulong start, target_ulong last) +static bool pageflags_unset(vaddr start, vaddr last) { bool inval_tb = false; while (true) { PageFlagsNode *p = pageflags_find(start, last); - target_ulong p_last; + vaddr p_last; if (!p) { break; @@ -302,8 +310,7 @@ static bool pageflags_unset(target_ulong start, target_ulong last) * A subroutine of page_set_flags: nothing overlaps [start,last], * but check adjacent mappings and maybe merge into a single range. */ -static void pageflags_create_merge(target_ulong start, target_ulong last, - int flags) +static void pageflags_create_merge(vaddr start, vaddr last, int flags) { PageFlagsNode *next = NULL, *prev = NULL; @@ -354,11 +361,11 @@ static void pageflags_create_merge(target_ulong start, target_ulong last, #define PAGE_STICKY (PAGE_ANON | PAGE_PASSTHROUGH | PAGE_TARGET_STICKY) /* A subroutine of page_set_flags: add flags to [start,last]. */ -static bool pageflags_set_clear(target_ulong start, target_ulong last, +static bool pageflags_set_clear(vaddr start, vaddr last, int set_flags, int clear_flags) { PageFlagsNode *p; - target_ulong p_start, p_last; + vaddr p_start, p_last; int p_flags, merge_flags; bool inval_tb = false; @@ -493,7 +500,7 @@ static bool pageflags_set_clear(target_ulong start, target_ulong last, return inval_tb; } -void page_set_flags(target_ulong start, target_ulong last, int flags) +void page_set_flags(vaddr start, vaddr last, int flags) { bool reset = false; bool inval_tb = false; @@ -502,7 +509,7 @@ void page_set_flags(target_ulong start, target_ulong last, int flags) guest address space. If this assert fires, it probably indicates a missing call to h2g_valid. */ assert(start <= last); - assert(last <= GUEST_ADDR_MAX); + assert(last <= guest_addr_max); /* Only set PAGE_ANON with new mappings. */ assert(!(flags & PAGE_ANON) || (flags & PAGE_RESET)); assert_memory_lock(); @@ -529,13 +536,13 @@ void page_set_flags(target_ulong start, target_ulong last, int flags) ~(reset ? 0 : PAGE_STICKY)); } if (inval_tb) { - tb_invalidate_phys_range(start, last); + tb_invalidate_phys_range(NULL, start, last); } } -bool page_check_range(target_ulong start, target_ulong len, int flags) +bool page_check_range(vaddr start, vaddr len, int flags) { - target_ulong last; + vaddr last; int locked; /* tri-state: =0: unlocked, +1: global, -1: local */ bool ret; @@ -584,7 +591,7 @@ bool page_check_range(target_ulong start, target_ulong len, int flags) break; } /* Asking about writable, but has been protected: undo. */ - if (!page_unprotect(start, 0)) { + if (!page_unprotect(NULL, start, 0)) { ret = false; break; } @@ -611,20 +618,19 @@ bool page_check_range(target_ulong start, target_ulong len, int flags) return ret; } -bool page_check_range_empty(target_ulong start, target_ulong last) +bool page_check_range_empty(vaddr start, vaddr last) { assert(last >= start); assert_memory_lock(); return pageflags_find(start, last) == NULL; } -target_ulong page_find_range_empty(target_ulong min, target_ulong max, - target_ulong len, target_ulong align) +vaddr page_find_range_empty(vaddr min, vaddr max, vaddr len, vaddr align) { - target_ulong len_m1, align_m1; + vaddr len_m1, align_m1; assert(min <= max); - assert(max <= GUEST_ADDR_MAX); + assert(max <= guest_addr_max); assert(len != 0); assert(is_power_of_2(align)); assert_memory_lock(); @@ -662,7 +668,7 @@ target_ulong page_find_range_empty(target_ulong min, target_ulong max, void tb_lock_page0(tb_page_addr_t address) { PageFlagsNode *p; - target_ulong start, last; + vaddr start, last; int host_page_size = qemu_real_host_page_size(); int prot; @@ -704,11 +710,13 @@ void tb_lock_page0(tb_page_addr_t address) * immediately exited. (We can only return 2 if the 'pc' argument is * non-zero.) */ -int page_unprotect(tb_page_addr_t address, uintptr_t pc) +int page_unprotect(CPUState *cpu, tb_page_addr_t address, uintptr_t pc) { PageFlagsNode *p; bool current_tb_invalidated; + assert((cpu == NULL) == (pc == 0)); + /* * Technically this isn't safe inside a signal handler. However we * know this only ever happens in a synchronous SEGV handler, so in @@ -731,15 +739,15 @@ int page_unprotect(tb_page_addr_t address, uintptr_t pc) * this thread raced with another one which got here first and * set the page to PAGE_WRITE and did the TB invalidate for us. */ -#ifdef TARGET_HAS_PRECISE_SMC - TranslationBlock *current_tb = tcg_tb_lookup(pc); - if (current_tb) { - current_tb_invalidated = tb_cflags(current_tb) & CF_INVALID; + if (pc && cpu->cc->tcg_ops->precise_smc) { + TranslationBlock *current_tb = tcg_tb_lookup(pc); + if (current_tb) { + current_tb_invalidated = tb_cflags(current_tb) & CF_INVALID; + } } -#endif } else { int host_page_size = qemu_real_host_page_size(); - target_ulong start, len, i; + vaddr start, len, i; int prot; if (host_page_size <= TARGET_PAGE_SIZE) { @@ -747,14 +755,15 @@ int page_unprotect(tb_page_addr_t address, uintptr_t pc) len = TARGET_PAGE_SIZE; prot = p->flags | PAGE_WRITE; pageflags_set_clear(start, start + len - 1, PAGE_WRITE, 0); - current_tb_invalidated = tb_invalidate_phys_page_unwind(start, pc); + current_tb_invalidated = + tb_invalidate_phys_page_unwind(cpu, start, pc); } else { start = address & -host_page_size; len = host_page_size; prot = 0; for (i = 0; i < len; i += TARGET_PAGE_SIZE) { - target_ulong addr = start + i; + vaddr addr = start + i; p = pageflags_find(addr, addr); if (p) { @@ -770,7 +779,7 @@ int page_unprotect(tb_page_addr_t address, uintptr_t pc) * the corresponding translated code. */ current_tb_invalidated |= - tb_invalidate_phys_page_unwind(addr, pc); + tb_invalidate_phys_page_unwind(cpu, addr, pc); } } if (prot & PAGE_EXEC) { @@ -850,6 +859,12 @@ void *probe_access(CPUArchState *env, vaddr addr, int size, return size ? g2h(env_cpu(env), addr) : NULL; } +void *tlb_vaddr_to_host(CPUArchState *env, vaddr addr, + MMUAccessType access_type, int mmu_idx) +{ + return g2h(env_cpu(env), addr); +} + tb_page_addr_t get_page_addr_code_hostp(CPUArchState *env, vaddr addr, void **hostp) { @@ -864,7 +879,6 @@ tb_page_addr_t get_page_addr_code_hostp(CPUArchState *env, vaddr addr, return addr; } -#ifdef TARGET_PAGE_DATA_SIZE /* * Allocate chunks of target data together. For the only current user, * if we allocate one hunk per page, we have overhead of 40/128 or 40%. @@ -880,10 +894,16 @@ typedef struct TargetPageDataNode { } TargetPageDataNode; static IntervalTreeRoot targetdata_root; +static size_t target_page_data_size; -void page_reset_target_data(target_ulong start, target_ulong last) +void page_reset_target_data(vaddr start, vaddr last) { IntervalTreeNode *n, *next; + size_t size = target_page_data_size; + + if (likely(size == 0)) { + return; + } assert_memory_lock(); @@ -895,7 +915,7 @@ void page_reset_target_data(target_ulong start, target_ulong last) n != NULL; n = next, next = next ? interval_tree_iter_next(n, start, last) : NULL) { - target_ulong n_start, n_last, p_ofs, p_len; + vaddr n_start, n_last, p_ofs, p_len; TargetPageDataNode *t = container_of(n, TargetPageDataNode, itree); if (n->start >= start && n->last <= last) { @@ -914,16 +934,21 @@ void page_reset_target_data(target_ulong start, target_ulong last) n_last = MIN(last, n->last); p_len = (n_last + 1 - n_start) >> TARGET_PAGE_BITS; - memset(t->data + p_ofs * TARGET_PAGE_DATA_SIZE, 0, - p_len * TARGET_PAGE_DATA_SIZE); + memset(t->data + p_ofs * size, 0, p_len * size); } } -void *page_get_target_data(target_ulong address) +void *page_get_target_data(vaddr address, size_t size) { IntervalTreeNode *n; TargetPageDataNode *t; - target_ulong page, region, p_ofs; + vaddr page, region, p_ofs; + + /* Remember the size from the first call, and it should be constant. */ + if (unlikely(target_page_data_size != size)) { + assert(target_page_data_size == 0); + target_page_data_size = size; + } page = address & TARGET_PAGE_MASK; region = address & TBD_MASK; @@ -939,8 +964,7 @@ void *page_get_target_data(target_ulong address) mmap_lock(); n = interval_tree_iter_first(&targetdata_root, page, page); if (!n) { - t = g_malloc0(sizeof(TargetPageDataNode) - + TPD_PAGES * TARGET_PAGE_DATA_SIZE); + t = g_malloc0(sizeof(TargetPageDataNode) + TPD_PAGES * size); n = &t->itree; n->start = region; n->last = region | ~TBD_MASK; @@ -951,11 +975,8 @@ void *page_get_target_data(target_ulong address) t = container_of(n, TargetPageDataNode, itree); p_ofs = (page - region) >> TARGET_PAGE_BITS; - return t->data + p_ofs * TARGET_PAGE_DATA_SIZE; + return t->data + p_ofs * size; } -#else -void page_reset_target_data(target_ulong start, target_ulong last) { } -#endif /* TARGET_PAGE_DATA_SIZE */ /* The system-mode versions of these helpers are in cputlb.c. */ @@ -1017,7 +1038,7 @@ int cpu_memory_rw_debug(CPUState *cpu, vaddr addr, * be under mmap_lock() in order to prevent the creation of * another TranslationBlock in between. */ - tb_invalidate_phys_range(addr, addr + l - 1); + tb_invalidate_phys_range(NULL, addr, addr + l - 1); written = pwrite(fd, buf, l, (off_t)(uintptr_t)g2h_untagged(addr)); if (written != l) { @@ -1123,7 +1144,7 @@ static uint64_t do_ld8_mmu(CPUState *cpu, vaddr addr, MemOpIdx oi, return ret; } -static Int128 do_ld16_mmu(CPUState *cpu, abi_ptr addr, +static Int128 do_ld16_mmu(CPUState *cpu, vaddr addr, MemOpIdx oi, uintptr_t ra) { void *haddr; |