ifeq ($(TARGET_ARCH), i386)
LIBOBJS+=helper.o helper2.o
-ifeq ($(ARCH), i386)
-LIBOBJS+=translate-copy.o
-endif
endif
ifeq ($(TARGET_ARCH), x86_64)
#if USE_KQEMU
(env->kqemu_enabled != 2) &&
#endif
- tb->page_addr[1] == -1
-#if defined(TARGET_I386) && defined(USE_CODE_COPY)
- && (tb->cflags & CF_CODE_COPY) ==
- (((TranslationBlock *)(T0 & ~3))->cflags & CF_CODE_COPY)
-#endif
- ) {
+ tb->page_addr[1] == -1) {
spin_lock(&tb_lock);
tb_add_jump((TranslationBlock *)(long)(T0 & ~3), T0 & 3, tb);
-#if defined(USE_CODE_COPY)
- /* propagates the FP use info */
- ((TranslationBlock *)(T0 & ~3))->cflags |=
- (tb->cflags & CF_FP_USED);
-#endif
spin_unlock(&tb_lock);
}
}
: /* no outputs */
: "r" (gen_func)
: "r1", "r2", "r3", "r8", "r9", "r10", "r12", "r14");
-#elif defined(TARGET_I386) && defined(USE_CODE_COPY)
-{
- if (!(tb->cflags & CF_CODE_COPY)) {
- if ((tb->cflags & CF_FP_USED) && env->native_fp_regs) {
- save_native_fp_state(env);
- }
- gen_func();
- } else {
- if ((tb->cflags & CF_FP_USED) && !env->native_fp_regs) {
- restore_native_fp_state(env);
- }
- /* we work with native eflags */
- CC_SRC = cc_table[CC_OP].compute_all();
- CC_OP = CC_OP_EFLAGS;
- asm(".globl exec_loop\n"
- "\n"
- "debug1:\n"
- " pushl %%ebp\n"
- " fs movl %10, %9\n"
- " fs movl %11, %%eax\n"
- " andl $0x400, %%eax\n"
- " fs orl %8, %%eax\n"
- " pushl %%eax\n"
- " popf\n"
- " fs movl %%esp, %12\n"
- " fs movl %0, %%eax\n"
- " fs movl %1, %%ecx\n"
- " fs movl %2, %%edx\n"
- " fs movl %3, %%ebx\n"
- " fs movl %4, %%esp\n"
- " fs movl %5, %%ebp\n"
- " fs movl %6, %%esi\n"
- " fs movl %7, %%edi\n"
- " fs jmp *%9\n"
- "exec_loop:\n"
- " fs movl %%esp, %4\n"
- " fs movl %12, %%esp\n"
- " fs movl %%eax, %0\n"
- " fs movl %%ecx, %1\n"
- " fs movl %%edx, %2\n"
- " fs movl %%ebx, %3\n"
- " fs movl %%ebp, %5\n"
- " fs movl %%esi, %6\n"
- " fs movl %%edi, %7\n"
- " pushf\n"
- " popl %%eax\n"
- " movl %%eax, %%ecx\n"
- " andl $0x400, %%ecx\n"
- " shrl $9, %%ecx\n"
- " andl $0x8d5, %%eax\n"
- " fs movl %%eax, %8\n"
- " movl $1, %%eax\n"
- " subl %%ecx, %%eax\n"
- " fs movl %%eax, %11\n"
- " fs movl %9, %%ebx\n" /* get T0 value */
- " popl %%ebp\n"
- :
- : "m" (*(uint8_t *)offsetof(CPUState, regs[0])),
- "m" (*(uint8_t *)offsetof(CPUState, regs[1])),
- "m" (*(uint8_t *)offsetof(CPUState, regs[2])),
- "m" (*(uint8_t *)offsetof(CPUState, regs[3])),
- "m" (*(uint8_t *)offsetof(CPUState, regs[4])),
- "m" (*(uint8_t *)offsetof(CPUState, regs[5])),
- "m" (*(uint8_t *)offsetof(CPUState, regs[6])),
- "m" (*(uint8_t *)offsetof(CPUState, regs[7])),
- "m" (*(uint8_t *)offsetof(CPUState, cc_src)),
- "m" (*(uint8_t *)offsetof(CPUState, tmp0)),
- "a" (gen_func),
- "m" (*(uint8_t *)offsetof(CPUState, df)),
- "m" (*(uint8_t *)offsetof(CPUState, saved_esp))
- : "%ecx", "%edx"
- );
- }
-}
#elif defined(__ia64)
struct fptr {
void *ip;
#if defined(TARGET_I386)
-#if defined(USE_CODE_COPY)
- if (env->native_fp_regs) {
- save_native_fp_state(env);
- }
-#endif
/* restore flags in standard format */
env->eflags = env->eflags | cc_table[CC_OP].compute_all() | (DF & DF_MASK);
#elif defined(TARGET_ARM)
# define ERROR_sig(context) ((context)->uc_mcontext.gregs[REG_ERR])
#endif
-#if defined(USE_CODE_COPY)
-static void cpu_send_trap(unsigned long pc, int trap,
- struct ucontext *uc)
-{
- TranslationBlock *tb;
-
- if (cpu_single_env)
- env = cpu_single_env; /* XXX: find a correct solution for multithread */
- /* now we have a real cpu fault */
- tb = tb_find_pc(pc);
- if (tb) {
- /* the PC is inside the translated code. It means that we have
- a virtual CPU fault */
- cpu_restore_state(tb, env, pc, uc);
- }
- sigprocmask(SIG_SETMASK, &uc->uc_sigmask, NULL);
- raise_exception_err(trap, env->error_code);
-}
-#endif
-
int cpu_signal_handler(int host_signum, void *pinfo,
void *puc)
{
#endif
pc = EIP_sig(uc);
trapno = TRAP_sig(uc);
-#if defined(TARGET_I386) && defined(USE_CODE_COPY)
- if (trapno == 0x00 || trapno == 0x05) {
- /* send division by zero or bound exception */
- cpu_send_trap(pc, trapno, uc);
- return 1;
- } else
-#endif
- return handle_cpu_signal(pc, (unsigned long)info->si_addr,
- trapno == 0xe ?
- (ERROR_sig(uc) >> 1) & 1 : 0,
- &uc->uc_sigmask, puc);
+ return handle_cpu_signal(pc, (unsigned long)info->si_addr,
+ trapno == 0xe ?
+ (ERROR_sig(uc) >> 1) & 1 : 0,
+ &uc->uc_sigmask, puc);
}
#elif defined(__x86_64__)
"-s size set the stack size in bytes (default=%ld)\n"
"\n"
"debug options:\n"
-#ifdef USE_CODE_COPY
- "-no-code-copy disable code copy acceleration\n"
-#endif
"-d options activate log (logfile='%s')\n"
"-g wait for gdb on port 1234\n"
"-p pagesize set the host page size to 'pagesize'\n",
if (!strcmp(r, "g")) {
use_gdbstub = 1;
} else
-#ifdef USE_CODE_COPY
- if (!strcmp(r, "no-code-copy")) {
- code_copy_enabled = 0;
- } else
-#endif
{
usage();
}
/* the CPU emulator uses some host signals to detect exceptions,
we we forward to it some signals */
- if (host_signum == SIGSEGV || host_signum == SIGBUS
-#if defined(TARGET_I386) && defined(USE_CODE_COPY)
- || host_signum == SIGFPE
-#endif
- ) {
+ if (host_signum == SIGSEGV || host_signum == SIGBUS) {
if (cpu_signal_handler(host_signum, (void*)info, puc))
return;
}
tb->jmp_first = (TranslationBlock *)((long)tb | 2);
tb->jmp_next[0] = NULL;
tb->jmp_next[1] = NULL;
-#ifdef USE_CODE_COPY
- tb->cflags &= ~CF_FP_USED;
- if (tb->cflags & CF_TB_FP_USED)
- tb->cflags |= CF_FP_USED;
-#endif
/* init original jump addresses */
if (tb->tb_next_offset[0] != 0xffff)
"-drop-ld-preload drop LD_PRELOAD for target process\n"
"\n"
"debug options:\n"
-#ifdef USE_CODE_COPY
- "-no-code-copy disable code copy acceleration\n"
-#endif
"-d options activate log (logfile=%s)\n"
"-p pagesize set the host page size to 'pagesize'\n",
TARGET_ARCH,
} else if (!strcmp(r, "drop-ld-preload")) {
drop_ld_preload = 1;
} else
-#ifdef USE_CODE_COPY
- if (!strcmp(r, "no-code-copy")) {
- code_copy_enabled = 0;
- } else
-#endif
{
usage();
}
/* the CPU emulator uses some host signals to detect exceptions,
we we forward to it some signals */
- if (host_signum == SIGSEGV || host_signum == SIGBUS
-#if defined(TARGET_I386) && defined(USE_CODE_COPY)
- || host_signum == SIGFPE
-#endif
- ) {
+ if (host_signum == SIGSEGV || host_signum == SIGBUS) {
if (cpu_signal_handler(host_signum, info, puc))
return;
}
#include "softfloat.h"
-#if defined(__i386__) && !defined(CONFIG_SOFTMMU) && !defined(__APPLE__)
-#define USE_CODE_COPY
-#endif
-
#define R_EAX 0
#define R_ECX 1
#define R_EDX 2
uint64_t pat;
- /* temporary data for USE_CODE_COPY mode */
-#ifdef USE_CODE_COPY
- uint32_t tmp0;
- uint32_t saved_esp;
- int native_fp_regs; /* if true, the FPU state is in the native CPU regs */
-#endif
-
/* exception/interrupt handling */
jmp_buf jmp_env;
int exception_index;
//#define DEBUG_MMU
-#ifdef USE_CODE_COPY
-#include <unistd.h>
-#include <asm/ldt.h>
-#include <linux/unistd.h>
-#include <linux/version.h>
-
-int modify_ldt(int func, void *ptr, unsigned long bytecount)
-{
- return syscall(__NR_modify_ldt, func, ptr, bytecount);
-}
-
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 5, 66)
-#define modify_ldt_ldt_s user_desc
-#endif
-#endif /* USE_CODE_COPY */
-
static struct x86_def_t *x86_cpu_def;
typedef struct x86_def_t x86_def_t;
static int cpu_x86_register (CPUX86State *env, const x86_def_t *def);
inited = 1;
optimize_flags_init();
}
-#ifdef USE_CODE_COPY
- /* testing code for code copy case */
- {
- struct modify_ldt_ldt_s ldt;
-
- ldt.entry_number = 1;
- ldt.base_addr = (unsigned long)env;
- ldt.limit = (sizeof(CPUState) + 0xfff) >> 12;
- ldt.seg_32bit = 1;
- ldt.contents = MODIFY_LDT_CONTENTS_DATA;
- ldt.read_exec_only = 0;
- ldt.limit_in_pages = 1;
- ldt.seg_not_present = 0;
- ldt.useable = 1;
- modify_ldt(1, &ldt, sizeof(ldt)); /* write ldt entry */
-
- asm volatile ("movl %0, %%fs" : : "r" ((1 << 3) | 7));
- }
-#endif
cpu_x86_register(env, x86_cpu_def);
cpu_reset(env);
#ifdef USE_KQEMU
return paddr;
}
#endif /* !CONFIG_USER_ONLY */
-
-#if defined(USE_CODE_COPY)
-struct fpstate {
- uint16_t fpuc;
- uint16_t dummy1;
- uint16_t fpus;
- uint16_t dummy2;
- uint16_t fptag;
- uint16_t dummy3;
-
- uint32_t fpip;
- uint32_t fpcs;
- uint32_t fpoo;
- uint32_t fpos;
- uint8_t fpregs1[8 * 10];
-};
-
-void restore_native_fp_state(CPUState *env)
-{
- int fptag, i, j;
- struct fpstate fp1, *fp = &fp1;
-
- fp->fpuc = env->fpuc;
- fp->fpus = (env->fpus & ~0x3800) | (env->fpstt & 0x7) << 11;
- fptag = 0;
- for (i=7; i>=0; i--) {
- fptag <<= 2;
- if (env->fptags[i]) {
- fptag |= 3;
- } else {
- /* the FPU automatically computes it */
- }
- }
- fp->fptag = fptag;
- j = env->fpstt;
- for(i = 0;i < 8; i++) {
- memcpy(&fp->fpregs1[i * 10], &env->fpregs[j].d, 10);
- j = (j + 1) & 7;
- }
- asm volatile ("frstor %0" : "=m" (*fp));
- env->native_fp_regs = 1;
-}
-
-void save_native_fp_state(CPUState *env)
-{
- int fptag, i, j;
- uint16_t fpuc;
- struct fpstate fp1, *fp = &fp1;
-
- asm volatile ("fsave %0" : : "m" (*fp));
- env->fpuc = fp->fpuc;
- env->fpstt = (fp->fpus >> 11) & 7;
- env->fpus = fp->fpus & ~0x3800;
- fptag = fp->fptag;
- for(i = 0;i < 8; i++) {
- env->fptags[i] = ((fptag & 3) == 3);
- fptag >>= 2;
- }
- j = env->fpstt;
- for(i = 0;i < 8; i++) {
- memcpy(&env->fpregs[j].d, &fp->fpregs1[i * 10], 10);
- j = (j + 1) & 7;
- }
- /* we must restore the default rounding state */
- /* XXX: we do not restore the exception state */
- fpuc = 0x037f | (env->fpuc & (3 << 10));
- asm volatile("fldcw %0" : : "m" (fpuc));
- env->native_fp_regs = 0;
-}
-#endif
goto illegal_op;
}
}
-#ifdef USE_CODE_COPY
- s->tb->cflags |= CF_TB_FP_USED;
-#endif
break;
/************************/
/* string ops */
act.sa_sigaction = host_segv_handler;
sigaction(SIGSEGV, &act, NULL);
sigaction(SIGBUS, &act, NULL);
-#if defined (TARGET_I386) && defined(USE_CODE_COPY)
- sigaction(SIGFPE, &act, NULL);
-#endif
}
// cpu_set_log(CPU_LOG_TB_IN_ASM | CPU_LOG_TB_OUT_ASM | CPU_LOG_EXEC);
uint8_t *gen_code_buf;
int gen_code_size;
-#ifdef USE_CODE_COPY
- if (code_copy_enabled &&
- cpu_gen_code_copy(env, tb, max_code_size, &gen_code_size) == 0) {
- /* nothing more to do */
- } else
-#endif
- {
- if (gen_intermediate_code(env, tb) < 0)
- return -1;
-
- /* generate machine code */
- tb->tb_next_offset[0] = 0xffff;
- tb->tb_next_offset[1] = 0xffff;
- gen_code_buf = tb->tc_ptr;
+ if (gen_intermediate_code(env, tb) < 0)
+ return -1;
+
+ /* generate machine code */
+ tb->tb_next_offset[0] = 0xffff;
+ tb->tb_next_offset[1] = 0xffff;
+ gen_code_buf = tb->tc_ptr;
#ifdef USE_DIRECT_JUMP
- /* the following two entries are optional (only used for string ops) */
- tb->tb_jmp_offset[2] = 0xffff;
- tb->tb_jmp_offset[3] = 0xffff;
+ /* the following two entries are optional (only used for string ops) */
+ tb->tb_jmp_offset[2] = 0xffff;
+ tb->tb_jmp_offset[3] = 0xffff;
#endif
- dyngen_labels(gen_labels, nb_gen_labels, gen_code_buf, gen_opc_buf);
-
- gen_code_size = dyngen_code(gen_code_buf, tb->tb_next_offset,
+ dyngen_labels(gen_labels, nb_gen_labels, gen_code_buf, gen_opc_buf);
+
+ gen_code_size = dyngen_code(gen_code_buf, tb->tb_next_offset,
#ifdef USE_DIRECT_JUMP
- tb->tb_jmp_offset,
+ tb->tb_jmp_offset,
#else
- NULL,
+ NULL,
#endif
- gen_opc_buf, gen_opparam_buf, gen_labels);
- }
+ gen_opc_buf, gen_opparam_buf, gen_labels);
*gen_code_size_ptr = gen_code_size;
#ifdef DEBUG_DISAS
if (loglevel & CPU_LOG_TB_OUT_ASM) {
unsigned long tc_ptr;
uint16_t *opc_ptr;
-#ifdef USE_CODE_COPY
- if (tb->cflags & CF_CODE_COPY) {
- return cpu_restore_state_copy(tb, env, searched_pc, puc);
- }
-#endif
if (gen_intermediate_code_pc(env, tb) < 0)
return -1;
/* timer signal */
sigfillset(&act.sa_mask);
act.sa_flags = 0;
-#if defined (TARGET_I386) && defined(USE_CODE_COPY)
- act.sa_flags |= SA_ONSTACK;
-#endif
act.sa_handler = host_alarm_handler;
sigaction(SIGIO, &act, NULL);
sigfillset(&act.sa_mask);
act.sa_flags = 0;
-#if defined(TARGET_I386) && defined(USE_CODE_COPY)
- act.sa_flags |= SA_ONSTACK;
-#endif
act.sa_handler = host_alarm_handler;
sigaction(SIGALRM, &act, NULL);
/* timer signal */
sigfillset(&act.sa_mask);
act.sa_flags = 0;
-#if defined(TARGET_I386) && defined(USE_CODE_COPY)
- act.sa_flags |= SA_ONSTACK;
-#endif
act.sa_handler = host_alarm_handler;
sigaction(SIGALRM, &act, NULL);
"-kernel-kqemu enable KQEMU full virtualization (default is user mode only)\n"
"-no-kqemu disable KQEMU kernel module usage\n"
#endif
-#ifdef USE_CODE_COPY
- "-no-code-copy disable code copy acceleration\n"
-#endif
#ifdef TARGET_I386
"-std-vga simulate a standard VGA card with VESA Bochs Extensions\n"
" (default is CL-GD5446 PCI VGA)\n"
{ NULL },
};
-#if defined (TARGET_I386) && defined(USE_CODE_COPY)
-
-/* this stack is only used during signal handling */
-#define SIGNAL_STACK_SIZE 32768
-
-static uint8_t *signal_stack;
-
-#endif
-
/* password input */
int qemu_key_check(BlockDriverState *bs, const char *name)
projects / mirror_qemu.git / commitdiff