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/*
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* KQEMU support
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*
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* Copyright (c) 2005-2008 Fabrice Bellard
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301 USA
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*/
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#include "config.h" |
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#ifdef _WIN32
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#include <windows.h> |
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#include <winioctl.h> |
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#else
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#include <sys/types.h> |
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#include <sys/mman.h> |
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#include <sys/ioctl.h> |
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#endif
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#ifdef HOST_SOLARIS
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#include <sys/ioccom.h> |
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#endif
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#include <stdlib.h> |
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#include <stdio.h> |
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#include <stdarg.h> |
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#include <string.h> |
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#include <errno.h> |
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#include <unistd.h> |
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#include <inttypes.h> |
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#include "cpu.h" |
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#include "exec-all.h" |
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#include "qemu-common.h" |
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#ifdef USE_KQEMU
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#define DEBUG
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//#define PROFILE
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|
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|
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#ifdef DEBUG
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# define LOG_INT(...) qemu_log_mask(CPU_LOG_INT, ## __VA_ARGS__) |
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# define LOG_INT_STATE(env) log_cpu_state_mask(CPU_LOG_INT, (env), 0) |
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#else
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# define LOG_INT(...) do { } while (0) |
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# define LOG_INT_STATE(env) do { } while (0) |
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#endif
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|
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#include <unistd.h> |
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#include <fcntl.h> |
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#include "kqemu.h" |
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|
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#ifdef _WIN32
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#define KQEMU_DEVICE "\\\\.\\kqemu" |
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#else
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#define KQEMU_DEVICE "/dev/kqemu" |
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#endif
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|
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static void qpi_init(void); |
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#ifdef _WIN32
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#define KQEMU_INVALID_FD INVALID_HANDLE_VALUE
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HANDLE kqemu_fd = KQEMU_INVALID_FD; |
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#define kqemu_closefd(x) CloseHandle(x)
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#else
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#define KQEMU_INVALID_FD -1 |
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int kqemu_fd = KQEMU_INVALID_FD;
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#define kqemu_closefd(x) close(x)
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#endif
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|
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/* 0 = not allowed
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1 = user kqemu
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2 = kernel kqemu
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*/
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int kqemu_allowed = 1; |
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uint64_t *pages_to_flush; |
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unsigned int nb_pages_to_flush; |
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uint64_t *ram_pages_to_update; |
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unsigned int nb_ram_pages_to_update; |
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uint64_t *modified_ram_pages; |
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unsigned int nb_modified_ram_pages; |
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uint8_t *modified_ram_pages_table; |
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int qpi_io_memory;
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uint32_t kqemu_comm_base; /* physical address of the QPI communication page */
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ram_addr_t kqemu_phys_ram_size; |
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uint8_t *kqemu_phys_ram_base; |
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#define cpuid(index, eax, ebx, ecx, edx) \
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asm volatile ("cpuid" \ |
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: "=a" (eax), "=b" (ebx), "=c" (ecx), "=d" (edx) \ |
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: "0" (index))
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#ifdef __x86_64__
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static int is_cpuid_supported(void) |
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{ |
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return 1; |
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} |
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#else
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static int is_cpuid_supported(void) |
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{ |
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int v0, v1;
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asm volatile ("pushf\n" |
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"popl %0\n"
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"movl %0, %1\n"
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"xorl $0x00200000, %0\n"
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"pushl %0\n"
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"popf\n"
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"pushf\n"
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"popl %0\n"
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: "=a" (v0), "=d" (v1) |
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: |
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: "cc");
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return (v0 != v1);
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} |
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#endif
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static void kqemu_update_cpuid(CPUState *env) |
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{ |
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int critical_features_mask, features, ext_features, ext_features_mask;
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uint32_t eax, ebx, ecx, edx; |
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/* the following features are kept identical on the host and
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target cpus because they are important for user code. Strictly
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speaking, only SSE really matters because the OS must support
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it if the user code uses it. */
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critical_features_mask = |
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CPUID_CMOV | CPUID_CX8 | |
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CPUID_FXSR | CPUID_MMX | CPUID_SSE | |
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CPUID_SSE2 | CPUID_SEP; |
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ext_features_mask = CPUID_EXT_SSE3 | CPUID_EXT_MONITOR; |
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if (!is_cpuid_supported()) {
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features = 0;
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ext_features = 0;
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} else {
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cpuid(1, eax, ebx, ecx, edx);
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features = edx; |
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ext_features = ecx; |
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} |
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#ifdef __x86_64__
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/* NOTE: on x86_64 CPUs, SYSENTER is not supported in
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compatibility mode, so in order to have the best performances
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it is better not to use it */
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features &= ~CPUID_SEP; |
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#endif
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env->cpuid_features = (env->cpuid_features & ~critical_features_mask) | |
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(features & critical_features_mask); |
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env->cpuid_ext_features = (env->cpuid_ext_features & ~ext_features_mask) | |
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(ext_features & ext_features_mask); |
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/* XXX: we could update more of the target CPUID state so that the
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non accelerated code sees exactly the same CPU features as the
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accelerated code */
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} |
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int kqemu_init(CPUState *env)
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{ |
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struct kqemu_init kinit;
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int ret, version;
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#ifdef _WIN32
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DWORD temp; |
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#endif
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if (!kqemu_allowed)
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return -1; |
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#ifdef _WIN32
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kqemu_fd = CreateFile(KQEMU_DEVICE, GENERIC_WRITE | GENERIC_READ, |
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FILE_SHARE_READ | FILE_SHARE_WRITE, |
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NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL,
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NULL);
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if (kqemu_fd == KQEMU_INVALID_FD) {
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fprintf(stderr, "Could not open '%s' - QEMU acceleration layer not activated: %lu\n",
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KQEMU_DEVICE, GetLastError()); |
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return -1; |
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} |
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#else
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kqemu_fd = open(KQEMU_DEVICE, O_RDWR); |
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if (kqemu_fd == KQEMU_INVALID_FD) {
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fprintf(stderr, "Could not open '%s' - QEMU acceleration layer not activated: %s\n",
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KQEMU_DEVICE, strerror(errno)); |
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return -1; |
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} |
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#endif
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version = 0;
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#ifdef _WIN32
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DeviceIoControl(kqemu_fd, KQEMU_GET_VERSION, NULL, 0, |
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&version, sizeof(version), &temp, NULL); |
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#else
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ioctl(kqemu_fd, KQEMU_GET_VERSION, &version); |
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#endif
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if (version != KQEMU_VERSION) {
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fprintf(stderr, "Version mismatch between kqemu module and qemu (%08x %08x) - disabling kqemu use\n",
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version, KQEMU_VERSION); |
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goto fail;
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} |
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pages_to_flush = qemu_vmalloc(KQEMU_MAX_PAGES_TO_FLUSH * |
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sizeof(uint64_t));
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if (!pages_to_flush)
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goto fail;
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ram_pages_to_update = qemu_vmalloc(KQEMU_MAX_RAM_PAGES_TO_UPDATE * |
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sizeof(uint64_t));
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if (!ram_pages_to_update)
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goto fail;
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modified_ram_pages = qemu_vmalloc(KQEMU_MAX_MODIFIED_RAM_PAGES * |
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sizeof(uint64_t));
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if (!modified_ram_pages)
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goto fail;
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modified_ram_pages_table = |
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qemu_mallocz(kqemu_phys_ram_size >> TARGET_PAGE_BITS); |
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if (!modified_ram_pages_table)
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goto fail;
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memset(&kinit, 0, sizeof(kinit)); /* set the paddings to zero */ |
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kinit.ram_base = kqemu_phys_ram_base; |
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kinit.ram_size = kqemu_phys_ram_size; |
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kinit.ram_dirty = phys_ram_dirty; |
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kinit.pages_to_flush = pages_to_flush; |
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kinit.ram_pages_to_update = ram_pages_to_update; |
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kinit.modified_ram_pages = modified_ram_pages; |
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#ifdef _WIN32
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ret = DeviceIoControl(kqemu_fd, KQEMU_INIT, &kinit, sizeof(kinit),
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NULL, 0, &temp, NULL) == TRUE ? 0 : -1; |
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#else
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ret = ioctl(kqemu_fd, KQEMU_INIT, &kinit); |
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#endif
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if (ret < 0) { |
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fprintf(stderr, "Error %d while initializing QEMU acceleration layer - disabling it for now\n", ret);
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fail:
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kqemu_closefd(kqemu_fd); |
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kqemu_fd = KQEMU_INVALID_FD; |
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return -1; |
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} |
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kqemu_update_cpuid(env); |
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env->kqemu_enabled = kqemu_allowed; |
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nb_pages_to_flush = 0;
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nb_ram_pages_to_update = 0;
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qpi_init(); |
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return 0; |
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} |
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void kqemu_flush_page(CPUState *env, target_ulong addr)
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{ |
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LOG_INT("kqemu_flush_page: addr=" TARGET_FMT_lx "\n", addr); |
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if (nb_pages_to_flush >= KQEMU_MAX_PAGES_TO_FLUSH)
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nb_pages_to_flush = KQEMU_FLUSH_ALL; |
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else
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pages_to_flush[nb_pages_to_flush++] = addr; |
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} |
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void kqemu_flush(CPUState *env, int global) |
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{ |
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LOG_INT("kqemu_flush:\n");
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nb_pages_to_flush = KQEMU_FLUSH_ALL; |
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} |
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void kqemu_set_notdirty(CPUState *env, ram_addr_t ram_addr)
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{ |
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LOG_INT("kqemu_set_notdirty: addr=%08lx\n",
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(unsigned long)ram_addr); |
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/* we only track transitions to dirty state */
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if (phys_ram_dirty[ram_addr >> TARGET_PAGE_BITS] != 0xff) |
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return;
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if (nb_ram_pages_to_update >= KQEMU_MAX_RAM_PAGES_TO_UPDATE)
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nb_ram_pages_to_update = KQEMU_RAM_PAGES_UPDATE_ALL; |
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else
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ram_pages_to_update[nb_ram_pages_to_update++] = ram_addr; |
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} |
280 |
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static void kqemu_reset_modified_ram_pages(void) |
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{ |
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int i;
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unsigned long page_index; |
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for(i = 0; i < nb_modified_ram_pages; i++) { |
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page_index = modified_ram_pages[i] >> TARGET_PAGE_BITS; |
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modified_ram_pages_table[page_index] = 0;
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} |
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nb_modified_ram_pages = 0;
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} |
292 |
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void kqemu_modify_page(CPUState *env, ram_addr_t ram_addr)
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{ |
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unsigned long page_index; |
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int ret;
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#ifdef _WIN32
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DWORD temp; |
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#endif
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page_index = ram_addr >> TARGET_PAGE_BITS; |
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if (!modified_ram_pages_table[page_index]) {
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#if 0
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printf("%d: modify_page=%08lx\n", nb_modified_ram_pages, ram_addr);
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#endif
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modified_ram_pages_table[page_index] = 1;
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modified_ram_pages[nb_modified_ram_pages++] = ram_addr; |
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if (nb_modified_ram_pages >= KQEMU_MAX_MODIFIED_RAM_PAGES) {
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/* flush */
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#ifdef _WIN32
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ret = DeviceIoControl(kqemu_fd, KQEMU_MODIFY_RAM_PAGES, |
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&nb_modified_ram_pages, |
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sizeof(nb_modified_ram_pages),
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NULL, 0, &temp, NULL); |
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#else
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ret = ioctl(kqemu_fd, KQEMU_MODIFY_RAM_PAGES, |
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&nb_modified_ram_pages); |
318 |
#endif
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kqemu_reset_modified_ram_pages(); |
320 |
} |
321 |
} |
322 |
} |
323 |
|
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void kqemu_set_phys_mem(uint64_t start_addr, ram_addr_t size,
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ram_addr_t phys_offset) |
326 |
{ |
327 |
struct kqemu_phys_mem kphys_mem1, *kphys_mem = &kphys_mem1;
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uint64_t end; |
329 |
int ret, io_index;
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|
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end = (start_addr + size + TARGET_PAGE_SIZE - 1) & TARGET_PAGE_MASK;
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start_addr &= TARGET_PAGE_MASK; |
333 |
kphys_mem->phys_addr = start_addr; |
334 |
kphys_mem->size = end - start_addr; |
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kphys_mem->ram_addr = phys_offset & TARGET_PAGE_MASK; |
336 |
io_index = phys_offset & ~TARGET_PAGE_MASK; |
337 |
switch(io_index) {
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338 |
case IO_MEM_RAM:
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339 |
kphys_mem->io_index = KQEMU_IO_MEM_RAM; |
340 |
break;
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341 |
case IO_MEM_ROM:
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342 |
kphys_mem->io_index = KQEMU_IO_MEM_ROM; |
343 |
break;
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344 |
default:
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if (qpi_io_memory == io_index) {
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kphys_mem->io_index = KQEMU_IO_MEM_COMM; |
347 |
} else {
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348 |
kphys_mem->io_index = KQEMU_IO_MEM_UNASSIGNED; |
349 |
} |
350 |
break;
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351 |
} |
352 |
#ifdef _WIN32
|
353 |
{ |
354 |
DWORD temp; |
355 |
ret = DeviceIoControl(kqemu_fd, KQEMU_SET_PHYS_MEM, |
356 |
kphys_mem, sizeof(*kphys_mem),
|
357 |
NULL, 0, &temp, NULL) == TRUE ? 0 : -1; |
358 |
} |
359 |
#else
|
360 |
ret = ioctl(kqemu_fd, KQEMU_SET_PHYS_MEM, kphys_mem); |
361 |
#endif
|
362 |
if (ret < 0) { |
363 |
fprintf(stderr, "kqemu: KQEMU_SET_PHYS_PAGE error=%d: start_addr=0x%016" PRIx64 " size=0x%08lx phys_offset=0x%08lx\n", |
364 |
ret, start_addr, |
365 |
(unsigned long)size, (unsigned long)phys_offset); |
366 |
} |
367 |
} |
368 |
|
369 |
struct fpstate {
|
370 |
uint16_t fpuc; |
371 |
uint16_t dummy1; |
372 |
uint16_t fpus; |
373 |
uint16_t dummy2; |
374 |
uint16_t fptag; |
375 |
uint16_t dummy3; |
376 |
|
377 |
uint32_t fpip; |
378 |
uint32_t fpcs; |
379 |
uint32_t fpoo; |
380 |
uint32_t fpos; |
381 |
uint8_t fpregs1[8 * 10]; |
382 |
}; |
383 |
|
384 |
struct fpxstate {
|
385 |
uint16_t fpuc; |
386 |
uint16_t fpus; |
387 |
uint16_t fptag; |
388 |
uint16_t fop; |
389 |
uint32_t fpuip; |
390 |
uint16_t cs_sel; |
391 |
uint16_t dummy0; |
392 |
uint32_t fpudp; |
393 |
uint16_t ds_sel; |
394 |
uint16_t dummy1; |
395 |
uint32_t mxcsr; |
396 |
uint32_t mxcsr_mask; |
397 |
uint8_t fpregs1[8 * 16]; |
398 |
uint8_t xmm_regs[16 * 16]; |
399 |
uint8_t dummy2[96];
|
400 |
}; |
401 |
|
402 |
static struct fpxstate fpx1 __attribute__((aligned(16))); |
403 |
|
404 |
static void restore_native_fp_frstor(CPUState *env) |
405 |
{ |
406 |
int fptag, i, j;
|
407 |
struct fpstate fp1, *fp = &fp1;
|
408 |
|
409 |
fp->fpuc = env->fpuc; |
410 |
fp->fpus = (env->fpus & ~0x3800) | (env->fpstt & 0x7) << 11; |
411 |
fptag = 0;
|
412 |
for (i=7; i>=0; i--) { |
413 |
fptag <<= 2;
|
414 |
if (env->fptags[i]) {
|
415 |
fptag |= 3;
|
416 |
} else {
|
417 |
/* the FPU automatically computes it */
|
418 |
} |
419 |
} |
420 |
fp->fptag = fptag; |
421 |
j = env->fpstt; |
422 |
for(i = 0;i < 8; i++) { |
423 |
memcpy(&fp->fpregs1[i * 10], &env->fpregs[j].d, 10); |
424 |
j = (j + 1) & 7; |
425 |
} |
426 |
asm volatile ("frstor %0" : "=m" (*fp)); |
427 |
} |
428 |
|
429 |
static void save_native_fp_fsave(CPUState *env) |
430 |
{ |
431 |
int fptag, i, j;
|
432 |
uint16_t fpuc; |
433 |
struct fpstate fp1, *fp = &fp1;
|
434 |
|
435 |
asm volatile ("fsave %0" : : "m" (*fp)); |
436 |
env->fpuc = fp->fpuc; |
437 |
env->fpstt = (fp->fpus >> 11) & 7; |
438 |
env->fpus = fp->fpus & ~0x3800;
|
439 |
fptag = fp->fptag; |
440 |
for(i = 0;i < 8; i++) { |
441 |
env->fptags[i] = ((fptag & 3) == 3); |
442 |
fptag >>= 2;
|
443 |
} |
444 |
j = env->fpstt; |
445 |
for(i = 0;i < 8; i++) { |
446 |
memcpy(&env->fpregs[j].d, &fp->fpregs1[i * 10], 10); |
447 |
j = (j + 1) & 7; |
448 |
} |
449 |
/* we must restore the default rounding state */
|
450 |
fpuc = 0x037f | (env->fpuc & (3 << 10)); |
451 |
asm volatile("fldcw %0" : : "m" (fpuc)); |
452 |
} |
453 |
|
454 |
static void restore_native_fp_fxrstor(CPUState *env) |
455 |
{ |
456 |
struct fpxstate *fp = &fpx1;
|
457 |
int i, j, fptag;
|
458 |
|
459 |
fp->fpuc = env->fpuc; |
460 |
fp->fpus = (env->fpus & ~0x3800) | (env->fpstt & 0x7) << 11; |
461 |
fptag = 0;
|
462 |
for(i = 0; i < 8; i++) |
463 |
fptag |= (env->fptags[i] << i); |
464 |
fp->fptag = fptag ^ 0xff;
|
465 |
|
466 |
j = env->fpstt; |
467 |
for(i = 0;i < 8; i++) { |
468 |
memcpy(&fp->fpregs1[i * 16], &env->fpregs[j].d, 10); |
469 |
j = (j + 1) & 7; |
470 |
} |
471 |
if (env->cpuid_features & CPUID_SSE) {
|
472 |
fp->mxcsr = env->mxcsr; |
473 |
/* XXX: check if DAZ is not available */
|
474 |
fp->mxcsr_mask = 0xffff;
|
475 |
memcpy(fp->xmm_regs, env->xmm_regs, CPU_NB_REGS * 16);
|
476 |
} |
477 |
asm volatile ("fxrstor %0" : "=m" (*fp)); |
478 |
} |
479 |
|
480 |
static void save_native_fp_fxsave(CPUState *env) |
481 |
{ |
482 |
struct fpxstate *fp = &fpx1;
|
483 |
int fptag, i, j;
|
484 |
uint16_t fpuc; |
485 |
|
486 |
asm volatile ("fxsave %0" : : "m" (*fp)); |
487 |
env->fpuc = fp->fpuc; |
488 |
env->fpstt = (fp->fpus >> 11) & 7; |
489 |
env->fpus = fp->fpus & ~0x3800;
|
490 |
fptag = fp->fptag ^ 0xff;
|
491 |
for(i = 0;i < 8; i++) { |
492 |
env->fptags[i] = (fptag >> i) & 1;
|
493 |
} |
494 |
j = env->fpstt; |
495 |
for(i = 0;i < 8; i++) { |
496 |
memcpy(&env->fpregs[j].d, &fp->fpregs1[i * 16], 10); |
497 |
j = (j + 1) & 7; |
498 |
} |
499 |
if (env->cpuid_features & CPUID_SSE) {
|
500 |
env->mxcsr = fp->mxcsr; |
501 |
memcpy(env->xmm_regs, fp->xmm_regs, CPU_NB_REGS * 16);
|
502 |
} |
503 |
|
504 |
/* we must restore the default rounding state */
|
505 |
asm volatile ("fninit"); |
506 |
fpuc = 0x037f | (env->fpuc & (3 << 10)); |
507 |
asm volatile("fldcw %0" : : "m" (fpuc)); |
508 |
} |
509 |
|
510 |
static int do_syscall(CPUState *env, |
511 |
struct kqemu_cpu_state *kenv)
|
512 |
{ |
513 |
int selector;
|
514 |
|
515 |
selector = (env->star >> 32) & 0xffff; |
516 |
#ifdef TARGET_X86_64
|
517 |
if (env->hflags & HF_LMA_MASK) {
|
518 |
int code64;
|
519 |
|
520 |
env->regs[R_ECX] = kenv->next_eip; |
521 |
env->regs[11] = env->eflags;
|
522 |
|
523 |
code64 = env->hflags & HF_CS64_MASK; |
524 |
|
525 |
cpu_x86_set_cpl(env, 0);
|
526 |
cpu_x86_load_seg_cache(env, R_CS, selector & 0xfffc,
|
527 |
0, 0xffffffff, |
528 |
DESC_G_MASK | DESC_P_MASK | |
529 |
DESC_S_MASK | |
530 |
DESC_CS_MASK | DESC_R_MASK | DESC_A_MASK | DESC_L_MASK); |
531 |
cpu_x86_load_seg_cache(env, R_SS, (selector + 8) & 0xfffc, |
532 |
0, 0xffffffff, |
533 |
DESC_G_MASK | DESC_B_MASK | DESC_P_MASK | |
534 |
DESC_S_MASK | |
535 |
DESC_W_MASK | DESC_A_MASK); |
536 |
env->eflags &= ~env->fmask; |
537 |
if (code64)
|
538 |
env->eip = env->lstar; |
539 |
else
|
540 |
env->eip = env->cstar; |
541 |
} else
|
542 |
#endif
|
543 |
{ |
544 |
env->regs[R_ECX] = (uint32_t)kenv->next_eip; |
545 |
|
546 |
cpu_x86_set_cpl(env, 0);
|
547 |
cpu_x86_load_seg_cache(env, R_CS, selector & 0xfffc,
|
548 |
0, 0xffffffff, |
549 |
DESC_G_MASK | DESC_B_MASK | DESC_P_MASK | |
550 |
DESC_S_MASK | |
551 |
DESC_CS_MASK | DESC_R_MASK | DESC_A_MASK); |
552 |
cpu_x86_load_seg_cache(env, R_SS, (selector + 8) & 0xfffc, |
553 |
0, 0xffffffff, |
554 |
DESC_G_MASK | DESC_B_MASK | DESC_P_MASK | |
555 |
DESC_S_MASK | |
556 |
DESC_W_MASK | DESC_A_MASK); |
557 |
env->eflags &= ~(IF_MASK | RF_MASK | VM_MASK); |
558 |
env->eip = (uint32_t)env->star; |
559 |
} |
560 |
return 2; |
561 |
} |
562 |
|
563 |
#ifdef CONFIG_PROFILER
|
564 |
|
565 |
#define PC_REC_SIZE 1 |
566 |
#define PC_REC_HASH_BITS 16 |
567 |
#define PC_REC_HASH_SIZE (1 << PC_REC_HASH_BITS) |
568 |
|
569 |
typedef struct PCRecord { |
570 |
unsigned long pc; |
571 |
int64_t count; |
572 |
struct PCRecord *next;
|
573 |
} PCRecord; |
574 |
|
575 |
static PCRecord *pc_rec_hash[PC_REC_HASH_SIZE];
|
576 |
static int nb_pc_records; |
577 |
|
578 |
static void kqemu_record_pc(unsigned long pc) |
579 |
{ |
580 |
unsigned long h; |
581 |
PCRecord **pr, *r; |
582 |
|
583 |
h = pc / PC_REC_SIZE; |
584 |
h = h ^ (h >> PC_REC_HASH_BITS); |
585 |
h &= (PC_REC_HASH_SIZE - 1);
|
586 |
pr = &pc_rec_hash[h]; |
587 |
for(;;) {
|
588 |
r = *pr; |
589 |
if (r == NULL) |
590 |
break;
|
591 |
if (r->pc == pc) {
|
592 |
r->count++; |
593 |
return;
|
594 |
} |
595 |
pr = &r->next; |
596 |
} |
597 |
r = malloc(sizeof(PCRecord));
|
598 |
r->count = 1;
|
599 |
r->pc = pc; |
600 |
r->next = NULL;
|
601 |
*pr = r; |
602 |
nb_pc_records++; |
603 |
} |
604 |
|
605 |
static int pc_rec_cmp(const void *p1, const void *p2) |
606 |
{ |
607 |
PCRecord *r1 = *(PCRecord **)p1; |
608 |
PCRecord *r2 = *(PCRecord **)p2; |
609 |
if (r1->count < r2->count)
|
610 |
return 1; |
611 |
else if (r1->count == r2->count) |
612 |
return 0; |
613 |
else
|
614 |
return -1; |
615 |
} |
616 |
|
617 |
static void kqemu_record_flush(void) |
618 |
{ |
619 |
PCRecord *r, *r_next; |
620 |
int h;
|
621 |
|
622 |
for(h = 0; h < PC_REC_HASH_SIZE; h++) { |
623 |
for(r = pc_rec_hash[h]; r != NULL; r = r_next) { |
624 |
r_next = r->next; |
625 |
free(r); |
626 |
} |
627 |
pc_rec_hash[h] = NULL;
|
628 |
} |
629 |
nb_pc_records = 0;
|
630 |
} |
631 |
|
632 |
void kqemu_record_dump(void) |
633 |
{ |
634 |
PCRecord **pr, *r; |
635 |
int i, h;
|
636 |
FILE *f; |
637 |
int64_t total, sum; |
638 |
|
639 |
pr = malloc(sizeof(PCRecord *) * nb_pc_records);
|
640 |
i = 0;
|
641 |
total = 0;
|
642 |
for(h = 0; h < PC_REC_HASH_SIZE; h++) { |
643 |
for(r = pc_rec_hash[h]; r != NULL; r = r->next) { |
644 |
pr[i++] = r; |
645 |
total += r->count; |
646 |
} |
647 |
} |
648 |
qsort(pr, nb_pc_records, sizeof(PCRecord *), pc_rec_cmp);
|
649 |
|
650 |
f = fopen("/tmp/kqemu.stats", "w"); |
651 |
if (!f) {
|
652 |
perror("/tmp/kqemu.stats");
|
653 |
exit(1);
|
654 |
} |
655 |
fprintf(f, "total: %" PRId64 "\n", total); |
656 |
sum = 0;
|
657 |
for(i = 0; i < nb_pc_records; i++) { |
658 |
r = pr[i]; |
659 |
sum += r->count; |
660 |
fprintf(f, "%08lx: %" PRId64 " %0.2f%% %0.2f%%\n", |
661 |
r->pc, |
662 |
r->count, |
663 |
(double)r->count / (double)total * 100.0, |
664 |
(double)sum / (double)total * 100.0); |
665 |
} |
666 |
fclose(f); |
667 |
free(pr); |
668 |
|
669 |
kqemu_record_flush(); |
670 |
} |
671 |
#endif
|
672 |
|
673 |
static inline void kqemu_load_seg(struct kqemu_segment_cache *ksc, |
674 |
const SegmentCache *sc)
|
675 |
{ |
676 |
ksc->selector = sc->selector; |
677 |
ksc->flags = sc->flags; |
678 |
ksc->limit = sc->limit; |
679 |
ksc->base = sc->base; |
680 |
} |
681 |
|
682 |
static inline void kqemu_save_seg(SegmentCache *sc, |
683 |
const struct kqemu_segment_cache *ksc) |
684 |
{ |
685 |
sc->selector = ksc->selector; |
686 |
sc->flags = ksc->flags; |
687 |
sc->limit = ksc->limit; |
688 |
sc->base = ksc->base; |
689 |
} |
690 |
|
691 |
int kqemu_cpu_exec(CPUState *env)
|
692 |
{ |
693 |
struct kqemu_cpu_state kcpu_state, *kenv = &kcpu_state;
|
694 |
int ret, cpl, i;
|
695 |
#ifdef CONFIG_PROFILER
|
696 |
int64_t ti; |
697 |
#endif
|
698 |
#ifdef _WIN32
|
699 |
DWORD temp; |
700 |
#endif
|
701 |
|
702 |
#ifdef CONFIG_PROFILER
|
703 |
ti = profile_getclock(); |
704 |
#endif
|
705 |
LOG_INT("kqemu: cpu_exec: enter\n");
|
706 |
LOG_INT_STATE(env); |
707 |
for(i = 0; i < CPU_NB_REGS; i++) |
708 |
kenv->regs[i] = env->regs[i]; |
709 |
kenv->eip = env->eip; |
710 |
kenv->eflags = env->eflags; |
711 |
for(i = 0; i < 6; i++) |
712 |
kqemu_load_seg(&kenv->segs[i], &env->segs[i]); |
713 |
kqemu_load_seg(&kenv->ldt, &env->ldt); |
714 |
kqemu_load_seg(&kenv->tr, &env->tr); |
715 |
kqemu_load_seg(&kenv->gdt, &env->gdt); |
716 |
kqemu_load_seg(&kenv->idt, &env->idt); |
717 |
kenv->cr0 = env->cr[0];
|
718 |
kenv->cr2 = env->cr[2];
|
719 |
kenv->cr3 = env->cr[3];
|
720 |
kenv->cr4 = env->cr[4];
|
721 |
kenv->a20_mask = env->a20_mask; |
722 |
kenv->efer = env->efer; |
723 |
kenv->tsc_offset = 0;
|
724 |
kenv->star = env->star; |
725 |
kenv->sysenter_cs = env->sysenter_cs; |
726 |
kenv->sysenter_esp = env->sysenter_esp; |
727 |
kenv->sysenter_eip = env->sysenter_eip; |
728 |
#ifdef TARGET_X86_64
|
729 |
kenv->lstar = env->lstar; |
730 |
kenv->cstar = env->cstar; |
731 |
kenv->fmask = env->fmask; |
732 |
kenv->kernelgsbase = env->kernelgsbase; |
733 |
#endif
|
734 |
if (env->dr[7] & 0xff) { |
735 |
kenv->dr7 = env->dr[7];
|
736 |
kenv->dr0 = env->dr[0];
|
737 |
kenv->dr1 = env->dr[1];
|
738 |
kenv->dr2 = env->dr[2];
|
739 |
kenv->dr3 = env->dr[3];
|
740 |
} else {
|
741 |
kenv->dr7 = 0;
|
742 |
} |
743 |
kenv->dr6 = env->dr[6];
|
744 |
cpl = (env->hflags & HF_CPL_MASK); |
745 |
kenv->cpl = cpl; |
746 |
kenv->nb_pages_to_flush = nb_pages_to_flush; |
747 |
kenv->user_only = (env->kqemu_enabled == 1);
|
748 |
kenv->nb_ram_pages_to_update = nb_ram_pages_to_update; |
749 |
nb_ram_pages_to_update = 0;
|
750 |
kenv->nb_modified_ram_pages = nb_modified_ram_pages; |
751 |
|
752 |
kqemu_reset_modified_ram_pages(); |
753 |
|
754 |
if (env->cpuid_features & CPUID_FXSR)
|
755 |
restore_native_fp_fxrstor(env); |
756 |
else
|
757 |
restore_native_fp_frstor(env); |
758 |
|
759 |
#ifdef _WIN32
|
760 |
if (DeviceIoControl(kqemu_fd, KQEMU_EXEC,
|
761 |
kenv, sizeof(struct kqemu_cpu_state), |
762 |
kenv, sizeof(struct kqemu_cpu_state), |
763 |
&temp, NULL)) {
|
764 |
ret = kenv->retval; |
765 |
} else {
|
766 |
ret = -1;
|
767 |
} |
768 |
#else
|
769 |
ioctl(kqemu_fd, KQEMU_EXEC, kenv); |
770 |
ret = kenv->retval; |
771 |
#endif
|
772 |
if (env->cpuid_features & CPUID_FXSR)
|
773 |
save_native_fp_fxsave(env); |
774 |
else
|
775 |
save_native_fp_fsave(env); |
776 |
|
777 |
for(i = 0; i < CPU_NB_REGS; i++) |
778 |
env->regs[i] = kenv->regs[i]; |
779 |
env->eip = kenv->eip; |
780 |
env->eflags = kenv->eflags; |
781 |
for(i = 0; i < 6; i++) |
782 |
kqemu_save_seg(&env->segs[i], &kenv->segs[i]); |
783 |
cpu_x86_set_cpl(env, kenv->cpl); |
784 |
kqemu_save_seg(&env->ldt, &kenv->ldt); |
785 |
env->cr[0] = kenv->cr0;
|
786 |
env->cr[4] = kenv->cr4;
|
787 |
env->cr[3] = kenv->cr3;
|
788 |
env->cr[2] = kenv->cr2;
|
789 |
env->dr[6] = kenv->dr6;
|
790 |
#ifdef TARGET_X86_64
|
791 |
env->kernelgsbase = kenv->kernelgsbase; |
792 |
#endif
|
793 |
|
794 |
/* flush pages as indicated by kqemu */
|
795 |
if (kenv->nb_pages_to_flush >= KQEMU_FLUSH_ALL) {
|
796 |
tlb_flush(env, 1);
|
797 |
} else {
|
798 |
for(i = 0; i < kenv->nb_pages_to_flush; i++) { |
799 |
tlb_flush_page(env, pages_to_flush[i]); |
800 |
} |
801 |
} |
802 |
nb_pages_to_flush = 0;
|
803 |
|
804 |
#ifdef CONFIG_PROFILER
|
805 |
kqemu_time += profile_getclock() - ti; |
806 |
kqemu_exec_count++; |
807 |
#endif
|
808 |
|
809 |
if (kenv->nb_ram_pages_to_update > 0) { |
810 |
cpu_tlb_update_dirty(env); |
811 |
} |
812 |
|
813 |
if (kenv->nb_modified_ram_pages > 0) { |
814 |
for(i = 0; i < kenv->nb_modified_ram_pages; i++) { |
815 |
unsigned long addr; |
816 |
addr = modified_ram_pages[i]; |
817 |
tb_invalidate_phys_page_range(addr, addr + TARGET_PAGE_SIZE, 0);
|
818 |
} |
819 |
} |
820 |
|
821 |
/* restore the hidden flags */
|
822 |
{ |
823 |
unsigned int new_hflags; |
824 |
#ifdef TARGET_X86_64
|
825 |
if ((env->hflags & HF_LMA_MASK) &&
|
826 |
(env->segs[R_CS].flags & DESC_L_MASK)) { |
827 |
/* long mode */
|
828 |
new_hflags = HF_CS32_MASK | HF_SS32_MASK | HF_CS64_MASK; |
829 |
} else
|
830 |
#endif
|
831 |
{ |
832 |
/* legacy / compatibility case */
|
833 |
new_hflags = (env->segs[R_CS].flags & DESC_B_MASK) |
834 |
>> (DESC_B_SHIFT - HF_CS32_SHIFT); |
835 |
new_hflags |= (env->segs[R_SS].flags & DESC_B_MASK) |
836 |
>> (DESC_B_SHIFT - HF_SS32_SHIFT); |
837 |
if (!(env->cr[0] & CR0_PE_MASK) || |
838 |
(env->eflags & VM_MASK) || |
839 |
!(env->hflags & HF_CS32_MASK)) { |
840 |
/* XXX: try to avoid this test. The problem comes from the
|
841 |
fact that is real mode or vm86 mode we only modify the
|
842 |
'base' and 'selector' fields of the segment cache to go
|
843 |
faster. A solution may be to force addseg to one in
|
844 |
translate-i386.c. */
|
845 |
new_hflags |= HF_ADDSEG_MASK; |
846 |
} else {
|
847 |
new_hflags |= ((env->segs[R_DS].base | |
848 |
env->segs[R_ES].base | |
849 |
env->segs[R_SS].base) != 0) <<
|
850 |
HF_ADDSEG_SHIFT; |
851 |
} |
852 |
} |
853 |
env->hflags = (env->hflags & |
854 |
~(HF_CS32_MASK | HF_SS32_MASK | HF_CS64_MASK | HF_ADDSEG_MASK)) | |
855 |
new_hflags; |
856 |
} |
857 |
/* update FPU flags */
|
858 |
env->hflags = (env->hflags & ~(HF_MP_MASK | HF_EM_MASK | HF_TS_MASK)) | |
859 |
((env->cr[0] << (HF_MP_SHIFT - 1)) & (HF_MP_MASK | HF_EM_MASK | HF_TS_MASK)); |
860 |
if (env->cr[4] & CR4_OSFXSR_MASK) |
861 |
env->hflags |= HF_OSFXSR_MASK; |
862 |
else
|
863 |
env->hflags &= ~HF_OSFXSR_MASK; |
864 |
|
865 |
LOG_INT("kqemu: kqemu_cpu_exec: ret=0x%x\n", ret);
|
866 |
if (ret == KQEMU_RET_SYSCALL) {
|
867 |
/* syscall instruction */
|
868 |
return do_syscall(env, kenv);
|
869 |
} else
|
870 |
if ((ret & 0xff00) == KQEMU_RET_INT) { |
871 |
env->exception_index = ret & 0xff;
|
872 |
env->error_code = 0;
|
873 |
env->exception_is_int = 1;
|
874 |
env->exception_next_eip = kenv->next_eip; |
875 |
#ifdef CONFIG_PROFILER
|
876 |
kqemu_ret_int_count++; |
877 |
#endif
|
878 |
LOG_INT("kqemu: interrupt v=%02x:\n", env->exception_index);
|
879 |
LOG_INT_STATE(env); |
880 |
return 1; |
881 |
} else if ((ret & 0xff00) == KQEMU_RET_EXCEPTION) { |
882 |
env->exception_index = ret & 0xff;
|
883 |
env->error_code = kenv->error_code; |
884 |
env->exception_is_int = 0;
|
885 |
env->exception_next_eip = 0;
|
886 |
#ifdef CONFIG_PROFILER
|
887 |
kqemu_ret_excp_count++; |
888 |
#endif
|
889 |
LOG_INT("kqemu: exception v=%02x e=%04x:\n",
|
890 |
env->exception_index, env->error_code); |
891 |
LOG_INT_STATE(env); |
892 |
return 1; |
893 |
} else if (ret == KQEMU_RET_INTR) { |
894 |
#ifdef CONFIG_PROFILER
|
895 |
kqemu_ret_intr_count++; |
896 |
#endif
|
897 |
LOG_INT_STATE(env); |
898 |
return 0; |
899 |
} else if (ret == KQEMU_RET_SOFTMMU) { |
900 |
#ifdef CONFIG_PROFILER
|
901 |
{ |
902 |
unsigned long pc = env->eip + env->segs[R_CS].base; |
903 |
kqemu_record_pc(pc); |
904 |
} |
905 |
#endif
|
906 |
LOG_INT_STATE(env); |
907 |
return 2; |
908 |
} else {
|
909 |
cpu_dump_state(env, stderr, fprintf, 0);
|
910 |
fprintf(stderr, "Unsupported return value: 0x%x\n", ret);
|
911 |
exit(1);
|
912 |
} |
913 |
return 0; |
914 |
} |
915 |
|
916 |
void kqemu_cpu_interrupt(CPUState *env)
|
917 |
{ |
918 |
#if defined(_WIN32)
|
919 |
/* cancelling the I/O request causes KQEMU to finish executing the
|
920 |
current block and successfully returning. */
|
921 |
CancelIo(kqemu_fd); |
922 |
#endif
|
923 |
} |
924 |
|
925 |
/*
|
926 |
QEMU paravirtualization interface. The current interface only
|
927 |
allows to modify the IF and IOPL flags when running in
|
928 |
kqemu.
|
929 |
|
930 |
At this point it is not very satisfactory. I leave it for reference
|
931 |
as it adds little complexity.
|
932 |
*/
|
933 |
|
934 |
#define QPI_COMM_PAGE_PHYS_ADDR 0xff000000 |
935 |
|
936 |
static uint32_t qpi_mem_readb(void *opaque, target_phys_addr_t addr) |
937 |
{ |
938 |
return 0; |
939 |
} |
940 |
|
941 |
static uint32_t qpi_mem_readw(void *opaque, target_phys_addr_t addr) |
942 |
{ |
943 |
return 0; |
944 |
} |
945 |
|
946 |
static void qpi_mem_writeb(void *opaque, target_phys_addr_t addr, uint32_t val) |
947 |
{ |
948 |
} |
949 |
|
950 |
static void qpi_mem_writew(void *opaque, target_phys_addr_t addr, uint32_t val) |
951 |
{ |
952 |
} |
953 |
|
954 |
static uint32_t qpi_mem_readl(void *opaque, target_phys_addr_t addr) |
955 |
{ |
956 |
CPUState *env; |
957 |
|
958 |
env = cpu_single_env; |
959 |
if (!env)
|
960 |
return 0; |
961 |
return env->eflags & (IF_MASK | IOPL_MASK);
|
962 |
} |
963 |
|
964 |
/* Note: after writing to this address, the guest code must make sure
|
965 |
it is exiting the current TB. pushf/popf can be used for that
|
966 |
purpose. */
|
967 |
static void qpi_mem_writel(void *opaque, target_phys_addr_t addr, uint32_t val) |
968 |
{ |
969 |
CPUState *env; |
970 |
|
971 |
env = cpu_single_env; |
972 |
if (!env)
|
973 |
return;
|
974 |
env->eflags = (env->eflags & ~(IF_MASK | IOPL_MASK)) | |
975 |
(val & (IF_MASK | IOPL_MASK)); |
976 |
} |
977 |
|
978 |
static CPUReadMemoryFunc *qpi_mem_read[3] = { |
979 |
qpi_mem_readb, |
980 |
qpi_mem_readw, |
981 |
qpi_mem_readl, |
982 |
}; |
983 |
|
984 |
static CPUWriteMemoryFunc *qpi_mem_write[3] = { |
985 |
qpi_mem_writeb, |
986 |
qpi_mem_writew, |
987 |
qpi_mem_writel, |
988 |
}; |
989 |
|
990 |
static void qpi_init(void) |
991 |
{ |
992 |
kqemu_comm_base = 0xff000000 | 1; |
993 |
qpi_io_memory = cpu_register_io_memory(0,
|
994 |
qpi_mem_read, |
995 |
qpi_mem_write, NULL);
|
996 |
cpu_register_physical_memory(kqemu_comm_base & ~0xfff,
|
997 |
0x1000, qpi_io_memory);
|
998 |
} |
999 |
#endif
|