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qemu / qemu / 7273a2dbcc431f56e2f352d64bb6ac3a231b75d7 / . / linux-user / main.c
blob: bcc36f256be9c4375224301754ffe221bbb735ee [file] [log] [blame]
/*
* qemu user main
*
* Copyright (c) 2003-2008 Fabrice Bellard
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, see <http://www.gnu.org/licenses/>.
*/
#include <stdlib.h>
#include <stdio.h>
#include <stdarg.h>
#include <string.h>
#include <errno.h>
#include <unistd.h>
#include <sys/mman.h>
#include <sys/syscall.h>
#include "qemu.h"
#include "qemu-common.h"
#include "cache-utils.h"
/* For tb_lock */
#include "exec-all.h"
#include "envlist.h"
#define DEBUG_LOGFILE "/tmp/qemu.log"
char *exec_path;
int singlestep;
#if defined(CONFIG_USE_GUEST_BASE)
unsigned long mmap_min_addr;
unsigned long guest_base;
int have_guest_base;
#endif
static const char *interp_prefix = CONFIG_QEMU_PREFIX;
const char *qemu_uname_release = CONFIG_UNAME_RELEASE;
/* XXX: on x86 MAP_GROWSDOWN only works if ESP <= address + 32, so
we allocate a bigger stack. Need a better solution, for example
by remapping the process stack directly at the right place */
unsigned long x86_stack_size = 512 * 1024;
void gemu_log(const char *fmt, ...)
{
va_list ap;
va_start(ap, fmt);
vfprintf(stderr, fmt, ap);
va_end(ap);
}
#if defined(TARGET_I386)
int cpu_get_pic_interrupt(CPUState *env)
{
return -1;
}
#endif
/* timers for rdtsc */
#if 0
static uint64_t emu_time;
int64_t cpu_get_real_ticks(void)
{
return emu_time++;
}
#endif
#if defined(CONFIG_USE_NPTL)
/***********************************************************/
/* Helper routines for implementing atomic operations. */
/* To implement exclusive operations we force all cpus to syncronise.
We don't require a full sync, only that no cpus are executing guest code.
The alternative is to map target atomic ops onto host equivalents,
which requires quite a lot of per host/target work. */
static pthread_mutex_t cpu_list_mutex = PTHREAD_MUTEX_INITIALIZER;
static pthread_mutex_t exclusive_lock = PTHREAD_MUTEX_INITIALIZER;
static pthread_cond_t exclusive_cond = PTHREAD_COND_INITIALIZER;
static pthread_cond_t exclusive_resume = PTHREAD_COND_INITIALIZER;
static int pending_cpus;
/* Make sure everything is in a consistent state for calling fork(). */
void fork_start(void)
{
mmap_fork_start();
pthread_mutex_lock(&tb_lock);
pthread_mutex_lock(&exclusive_lock);
}
void fork_end(int child)
{
if (child) {
/* Child processes created by fork() only have a single thread.
Discard information about the parent threads. */
first_cpu = thread_env;
thread_env->next_cpu = NULL;
pending_cpus = 0;
pthread_mutex_init(&exclusive_lock, NULL);
pthread_mutex_init(&cpu_list_mutex, NULL);
pthread_cond_init(&exclusive_cond, NULL);
pthread_cond_init(&exclusive_resume, NULL);
pthread_mutex_init(&tb_lock, NULL);
gdbserver_fork(thread_env);
} else {
pthread_mutex_unlock(&exclusive_lock);
pthread_mutex_unlock(&tb_lock);
}
mmap_fork_end(child);
}
/* Wait for pending exclusive operations to complete. The exclusive lock
must be held. */
static inline void exclusive_idle(void)
{
while (pending_cpus) {
pthread_cond_wait(&exclusive_resume, &exclusive_lock);
}
}
/* Start an exclusive operation.
Must only be called from outside cpu_arm_exec. */
static inline void start_exclusive(void)
{
CPUState *other;
pthread_mutex_lock(&exclusive_lock);
exclusive_idle();
pending_cpus = 1;
/* Make all other cpus stop executing. */
for (other = first_cpu; other; other = other->next_cpu) {
if (other->running) {
pending_cpus++;
cpu_exit(other);
}
}
if (pending_cpus > 1) {
pthread_cond_wait(&exclusive_cond, &exclusive_lock);
}
}
/* Finish an exclusive operation. */
static inline void end_exclusive(void)
{
pending_cpus = 0;
pthread_cond_broadcast(&exclusive_resume);
pthread_mutex_unlock(&exclusive_lock);
}
/* Wait for exclusive ops to finish, and begin cpu execution. */
static inline void cpu_exec_start(CPUState *env)
{
pthread_mutex_lock(&exclusive_lock);
exclusive_idle();
env->running = 1;
pthread_mutex_unlock(&exclusive_lock);
}
/* Mark cpu as not executing, and release pending exclusive ops. */
static inline void cpu_exec_end(CPUState *env)
{
pthread_mutex_lock(&exclusive_lock);
env->running = 0;
if (pending_cpus > 1) {
pending_cpus--;
if (pending_cpus == 1) {
pthread_cond_signal(&exclusive_cond);
}
}
exclusive_idle();
pthread_mutex_unlock(&exclusive_lock);
}
void cpu_list_lock(void)
{
pthread_mutex_lock(&cpu_list_mutex);
}
void cpu_list_unlock(void)
{
pthread_mutex_unlock(&cpu_list_mutex);
}
#else /* if !CONFIG_USE_NPTL */
/* These are no-ops because we are not threadsafe. */
static inline void cpu_exec_start(CPUState *env)
{
}
static inline void cpu_exec_end(CPUState *env)
{
}
static inline void start_exclusive(void)
{
}
static inline void end_exclusive(void)
{
}
void fork_start(void)
{
}
void fork_end(int child)
{
if (child) {
gdbserver_fork(thread_env);
}
}
void cpu_list_lock(void)
{
}
void cpu_list_unlock(void)
{
}
#endif
#ifdef TARGET_I386
/***********************************************************/
/* CPUX86 core interface */
void cpu_smm_update(CPUState *env)
{
}
uint64_t cpu_get_tsc(CPUX86State *env)
{
return cpu_get_real_ticks();
}
static void write_dt(void *ptr, unsigned long addr, unsigned long limit,
int flags)
{
unsigned int e1, e2;
uint32_t *p;
e1 = (addr << 16) | (limit & 0xffff);
e2 = ((addr >> 16) & 0xff) | (addr & 0xff000000) | (limit & 0x000f0000);
e2 |= flags;
p = ptr;
p[0] = tswap32(e1);
p[1] = tswap32(e2);
}
static uint64_t *idt_table;
#ifdef TARGET_X86_64
static void set_gate64(void *ptr, unsigned int type, unsigned int dpl,
uint64_t addr, unsigned int sel)
{
uint32_t *p, e1, e2;
e1 = (addr & 0xffff) | (sel << 16);
e2 = (addr & 0xffff0000) | 0x8000 | (dpl << 13) | (type << 8);
p = ptr;
p[0] = tswap32(e1);
p[1] = tswap32(e2);
p[2] = tswap32(addr >> 32);
p[3] = 0;
}
/* only dpl matters as we do only user space emulation */
static void set_idt(int n, unsigned int dpl)
{
set_gate64(idt_table + n * 2, 0, dpl, 0, 0);
}
#else
static void set_gate(void *ptr, unsigned int type, unsigned int dpl,
uint32_t addr, unsigned int sel)
{
uint32_t *p, e1, e2;
e1 = (addr & 0xffff) | (sel << 16);
e2 = (addr & 0xffff0000) | 0x8000 | (dpl << 13) | (type << 8);
p = ptr;
p[0] = tswap32(e1);
p[1] = tswap32(e2);
}
/* only dpl matters as we do only user space emulation */
static void set_idt(int n, unsigned int dpl)
{
set_gate(idt_table + n, 0, dpl, 0, 0);
}
#endif
void cpu_loop(CPUX86State *env)
{
int trapnr;
abi_ulong pc;
target_siginfo_t info;
for(;;) {
trapnr = cpu_x86_exec(env);
switch(trapnr) {
case 0x80:
/* linux syscall from int $0x80 */
env->regs[R_EAX] = do_syscall(env,
env->regs[R_EAX],
env->regs[R_EBX],
env->regs[R_ECX],
env->regs[R_EDX],
env->regs[R_ESI],
env->regs[R_EDI],
env->regs[R_EBP]);
break;
#ifndef TARGET_ABI32
case EXCP_SYSCALL:
/* linux syscall from syscall intruction */
env->regs[R_EAX] = do_syscall(env,
env->regs[R_EAX],
env->regs[R_EDI],
env->regs[R_ESI],
env->regs[R_EDX],
env->regs[10],
env->regs[8],
env->regs[9]);
env->eip = env->exception_next_eip;
break;
#endif
case EXCP0B_NOSEG:
case EXCP0C_STACK:
info.si_signo = SIGBUS;
info.si_errno = 0;
info.si_code = TARGET_SI_KERNEL;
info._sifields._sigfault._addr = 0;
queue_signal(env, info.si_signo, &info);
break;
case EXCP0D_GPF:
/* XXX: potential problem if ABI32 */
#ifndef TARGET_X86_64
if (env->eflags & VM_MASK) {
handle_vm86_fault(env);
} else
#endif
{
info.si_signo = SIGSEGV;
info.si_errno = 0;
info.si_code = TARGET_SI_KERNEL;
info._sifields._sigfault._addr = 0;
queue_signal(env, info.si_signo, &info);
}
break;
case EXCP0E_PAGE:
info.si_signo = SIGSEGV;
info.si_errno = 0;
if (!(env->error_code & 1))
info.si_code = TARGET_SEGV_MAPERR;
else
info.si_code = TARGET_SEGV_ACCERR;
info._sifields._sigfault._addr = env->cr[2];
queue_signal(env, info.si_signo, &info);
break;
case EXCP00_DIVZ:
#ifndef TARGET_X86_64
if (env->eflags & VM_MASK) {
handle_vm86_trap(env, trapnr);
} else
#endif
{
/* division by zero */
info.si_signo = SIGFPE;
info.si_errno = 0;
info.si_code = TARGET_FPE_INTDIV;
info._sifields._sigfault._addr = env->eip;
queue_signal(env, info.si_signo, &info);
}
break;
case EXCP01_DB:
case EXCP03_INT3:
#ifndef TARGET_X86_64
if (env->eflags & VM_MASK) {
handle_vm86_trap(env, trapnr);
} else
#endif
{
info.si_signo = SIGTRAP;
info.si_errno = 0;
if (trapnr == EXCP01_DB) {
info.si_code = TARGET_TRAP_BRKPT;
info._sifields._sigfault._addr = env->eip;
} else {
info.si_code = TARGET_SI_KERNEL;
info._sifields._sigfault._addr = 0;
}
queue_signal(env, info.si_signo, &info);
}
break;
case EXCP04_INTO:
case EXCP05_BOUND:
#ifndef TARGET_X86_64
if (env->eflags & VM_MASK) {
handle_vm86_trap(env, trapnr);
} else
#endif
{
info.si_signo = SIGSEGV;
info.si_errno = 0;
info.si_code = TARGET_SI_KERNEL;
info._sifields._sigfault._addr = 0;
queue_signal(env, info.si_signo, &info);
}
break;
case EXCP06_ILLOP:
info.si_signo = SIGILL;
info.si_errno = 0;
info.si_code = TARGET_ILL_ILLOPN;
info._sifields._sigfault._addr = env->eip;
queue_signal(env, info.si_signo, &info);
break;
case EXCP_INTERRUPT:
/* just indicate that signals should be handled asap */
break;
case EXCP_DEBUG:
{
int sig;
sig = gdb_handlesig (env, TARGET_SIGTRAP);
if (sig)
{
info.si_signo = sig;
info.si_errno = 0;
info.si_code = TARGET_TRAP_BRKPT;
queue_signal(env, info.si_signo, &info);
}
}
break;
default:
pc = env->segs[R_CS].base + env->eip;
fprintf(stderr, "qemu: 0x%08lx: unhandled CPU exception 0x%x - aborting\n",
(long)pc, trapnr);
abort();
}
process_pending_signals(env);
}
}
#endif
#ifdef TARGET_ARM
static void arm_cache_flush(abi_ulong start, abi_ulong last)
{
abi_ulong addr, last1;
if (last < start)
return;
addr = start;
for(;;) {
last1 = ((addr + TARGET_PAGE_SIZE) & TARGET_PAGE_MASK) - 1;
if (last1 > last)
last1 = last;
tb_invalidate_page_range(addr, last1 + 1);
if (last1 == last)
break;
addr = last1 + 1;
}
}
/* Handle a jump to the kernel code page. */
static int
do_kernel_trap(CPUARMState *env)
{
uint32_t addr;
uint32_t cpsr;
uint32_t val;
switch (env->regs[15]) {
case 0xffff0fa0: /* __kernel_memory_barrier */
/* ??? No-op. Will need to do better for SMP. */
break;
case 0xffff0fc0: /* __kernel_cmpxchg */
/* XXX: This only works between threads, not between processes.
It's probably possible to implement this with native host
operations. However things like ldrex/strex are much harder so
there's not much point trying. */
start_exclusive();
cpsr = cpsr_read(env);
addr = env->regs[2];
/* FIXME: This should SEGV if the access fails. */
if (get_user_u32(val, addr))
val = ~env->regs[0];
if (val == env->regs[0]) {
val = env->regs[1];
/* FIXME: Check for segfaults. */
put_user_u32(val, addr);
env->regs[0] = 0;
cpsr |= CPSR_C;
} else {
env->regs[0] = -1;
cpsr &= ~CPSR_C;
}
cpsr_write(env, cpsr, CPSR_C);
end_exclusive();
break;
case 0xffff0fe0: /* __kernel_get_tls */
env->regs[0] = env->cp15.c13_tls2;
break;
default:
return 1;
}
/* Jump back to the caller. */
addr = env->regs[14];
if (addr & 1) {
env->thumb = 1;
addr &= ~1;
}
env->regs[15] = addr;
return 0;
}
void cpu_loop(CPUARMState *env)
{
int trapnr;
unsigned int n, insn;
target_siginfo_t info;
uint32_t addr;
for(;;) {
cpu_exec_start(env);
trapnr = cpu_arm_exec(env);
cpu_exec_end(env);
switch(trapnr) {
case EXCP_UDEF:
{
TaskState *ts = env->opaque;
uint32_t opcode;
int rc;
/* we handle the FPU emulation here, as Linux */
/* we get the opcode */
/* FIXME - what to do if get_user() fails? */
get_user_u32(opcode, env->regs[15]);
rc = EmulateAll(opcode, &ts->fpa, env);
if (rc == 0) { /* illegal instruction */
info.si_signo = SIGILL;
info.si_errno = 0;
info.si_code = TARGET_ILL_ILLOPN;
info._sifields._sigfault._addr = env->regs[15];
queue_signal(env, info.si_signo, &info);
} else if (rc < 0) { /* FP exception */
int arm_fpe=0;
/* translate softfloat flags to FPSR flags */
if (-rc & float_flag_invalid)
arm_fpe |= BIT_IOC;
if (-rc & float_flag_divbyzero)
arm_fpe |= BIT_DZC;
if (-rc & float_flag_overflow)
arm_fpe |= BIT_OFC;
if (-rc & float_flag_underflow)
arm_fpe |= BIT_UFC;
if (-rc & float_flag_inexact)
arm_fpe |= BIT_IXC;
FPSR fpsr = ts->fpa.fpsr;
//printf("fpsr 0x%x, arm_fpe 0x%x\n",fpsr,arm_fpe);
if (fpsr & (arm_fpe << 16)) { /* exception enabled? */
info.si_signo = SIGFPE;
info.si_errno = 0;
/* ordered by priority, least first */
if (arm_fpe & BIT_IXC) info.si_code = TARGET_FPE_FLTRES;
if (arm_fpe & BIT_UFC) info.si_code = TARGET_FPE_FLTUND;
if (arm_fpe & BIT_OFC) info.si_code = TARGET_FPE_FLTOVF;
if (arm_fpe & BIT_DZC) info.si_code = TARGET_FPE_FLTDIV;
if (arm_fpe & BIT_IOC) info.si_code = TARGET_FPE_FLTINV;
info._sifields._sigfault._addr = env->regs[15];
queue_signal(env, info.si_signo, &info);
} else {
env->regs[15] += 4;
}
/* accumulate unenabled exceptions */
if ((!(fpsr & BIT_IXE)) && (arm_fpe & BIT_IXC))
fpsr |= BIT_IXC;
if ((!(fpsr & BIT_UFE)) && (arm_fpe & BIT_UFC))
fpsr |= BIT_UFC;
if ((!(fpsr & BIT_OFE)) && (arm_fpe & BIT_OFC))
fpsr |= BIT_OFC;
if ((!(fpsr & BIT_DZE)) && (arm_fpe & BIT_DZC))
fpsr |= BIT_DZC;
if ((!(fpsr & BIT_IOE)) && (arm_fpe & BIT_IOC))
fpsr |= BIT_IOC;
ts->fpa.fpsr=fpsr;
} else { /* everything OK */
/* increment PC */
env->regs[15] += 4;
}
}
break;
case EXCP_SWI:
case EXCP_BKPT:
{
env->eabi = 1;
/* system call */
if (trapnr == EXCP_BKPT) {
if (env->thumb) {
/* FIXME - what to do if get_user() fails? */
get_user_u16(insn, env->regs[15]);
n = insn & 0xff;
env->regs[15] += 2;
} else {
/* FIXME - what to do if get_user() fails? */
get_user_u32(insn, env->regs[15]);
n = (insn & 0xf) | ((insn >> 4) & 0xff0);
env->regs[15] += 4;
}
} else {
if (env->thumb) {
/* FIXME - what to do if get_user() fails? */
get_user_u16(insn, env->regs[15] - 2);
n = insn & 0xff;
} else {
/* FIXME - what to do if get_user() fails? */
get_user_u32(insn, env->regs[15] - 4);
n = insn & 0xffffff;
}
}
if (n == ARM_NR_cacheflush) {
arm_cache_flush(env->regs[0], env->regs[1]);
} else if (n == ARM_NR_semihosting
|| n == ARM_NR_thumb_semihosting) {
env->regs[0] = do_arm_semihosting (env);
} else if (n == 0 || n >= ARM_SYSCALL_BASE
|| (env->thumb && n == ARM_THUMB_SYSCALL)) {
/* linux syscall */
if (env->thumb || n == 0) {
n = env->regs[7];
} else {
n -= ARM_SYSCALL_BASE;
env->eabi = 0;
}
if ( n > ARM_NR_BASE) {
switch (n) {
case ARM_NR_cacheflush:
arm_cache_flush(env->regs[0], env->regs[1]);
break;
case ARM_NR_set_tls:
cpu_set_tls(env, env->regs[0]);
env->regs[0] = 0;
break;
default:
gemu_log("qemu: Unsupported ARM syscall: 0x%x\n",
n);
env->regs[0] = -TARGET_ENOSYS;
break;
}
} else {
env->regs[0] = do_syscall(env,
n,
env->regs[0],
env->regs[1],
env->regs[2],
env->regs[3],
env->regs[4],
env->regs[5]);
}
} else {
goto error;
}
}
break;
case EXCP_INTERRUPT:
/* just indicate that signals should be handled asap */
break;
case EXCP_PREFETCH_ABORT:
addr = env->cp15.c6_insn;
goto do_segv;
case EXCP_DATA_ABORT:
addr = env->cp15.c6_data;
goto do_segv;
do_segv:
{
info.si_signo = SIGSEGV;
info.si_errno = 0;
/* XXX: check env->error_code */
info.si_code = TARGET_SEGV_MAPERR;
info._sifields._sigfault._addr = addr;
queue_signal(env, info.si_signo, &info);
}
break;
case EXCP_DEBUG:
{
int sig;
sig = gdb_handlesig (env, TARGET_SIGTRAP);
if (sig)
{
info.si_signo = sig;
info.si_errno = 0;
info.si_code = TARGET_TRAP_BRKPT;
queue_signal(env, info.si_signo, &info);
}
}
break;
case EXCP_KERNEL_TRAP:
if (do_kernel_trap(env))
goto error;
break;
default:
error:
fprintf(stderr, "qemu: unhandled CPU exception 0x%x - aborting\n",
trapnr);
cpu_dump_state(env, stderr, fprintf, 0);
abort();
}
process_pending_signals(env);
}
}
#endif
#ifdef TARGET_SPARC
#define SPARC64_STACK_BIAS 2047
//#define DEBUG_WIN
/* WARNING: dealing with register windows _is_ complicated. More info
can be found at http://www.sics.se/~psm/sparcstack.html */
static inline int get_reg_index(CPUSPARCState *env, int cwp, int index)
{
index = (index + cwp * 16) % (16 * env->nwindows);
/* wrap handling : if cwp is on the last window, then we use the
registers 'after' the end */
if (index < 8 && env->cwp == env->nwindows - 1)
index += 16 * env->nwindows;
return index;
}
/* save the register window 'cwp1' */
static inline void save_window_offset(CPUSPARCState *env, int cwp1)
{
unsigned int i;
abi_ulong sp_ptr;
sp_ptr = env->regbase[get_reg_index(env, cwp1, 6)];
#ifdef TARGET_SPARC64
if (sp_ptr & 3)
sp_ptr += SPARC64_STACK_BIAS;
#endif
#if defined(DEBUG_WIN)
printf("win_overflow: sp_ptr=0x" TARGET_ABI_FMT_lx " save_cwp=%d\n",
sp_ptr, cwp1);
#endif
for(i = 0; i < 16; i++) {
/* FIXME - what to do if put_user() fails? */
put_user_ual(env->regbase[get_reg_index(env, cwp1, 8 + i)], sp_ptr);
sp_ptr += sizeof(abi_ulong);
}
}
static void save_window(CPUSPARCState *env)
{
#ifndef TARGET_SPARC64
unsigned int new_wim;
new_wim = ((env->wim >> 1) | (env->wim << (env->nwindows - 1))) &
((1LL << env->nwindows) - 1);
save_window_offset(env, cpu_cwp_dec(env, env->cwp - 2));
env->wim = new_wim;
#else
save_window_offset(env, cpu_cwp_dec(env, env->cwp - 2));
env->cansave++;
env->canrestore--;
#endif
}
static void restore_window(CPUSPARCState *env)
{
#ifndef TARGET_SPARC64
unsigned int new_wim;
#endif
unsigned int i, cwp1;
abi_ulong sp_ptr;
#ifndef TARGET_SPARC64
new_wim = ((env->wim << 1) | (env->wim >> (env->nwindows - 1))) &
((1LL << env->nwindows) - 1);
#endif
/* restore the invalid window */
cwp1 = cpu_cwp_inc(env, env->cwp + 1);
sp_ptr = env->regbase[get_reg_index(env, cwp1, 6)];
#ifdef TARGET_SPARC64
if (sp_ptr & 3)
sp_ptr += SPARC64_STACK_BIAS;
#endif
#if defined(DEBUG_WIN)
printf("win_underflow: sp_ptr=0x" TARGET_ABI_FMT_lx " load_cwp=%d\n",
sp_ptr, cwp1);
#endif
for(i = 0; i < 16; i++) {
/* FIXME - what to do if get_user() fails? */
get_user_ual(env->regbase[get_reg_index(env, cwp1, 8 + i)], sp_ptr);
sp_ptr += sizeof(abi_ulong);
}
#ifdef TARGET_SPARC64
env->canrestore++;
if (env->cleanwin < env->nwindows - 1)
env->cleanwin++;
env->cansave--;
#else
env->wim = new_wim;
#endif
}
static void flush_windows(CPUSPARCState *env)
{
int offset, cwp1;
offset = 1;
for(;;) {
/* if restore would invoke restore_window(), then we can stop */
cwp1 = cpu_cwp_inc(env, env->cwp + offset);
#ifndef TARGET_SPARC64
if (env->wim & (1 << cwp1))
break;
#else
if (env->canrestore == 0)
break;
env->cansave++;
env->canrestore--;
#endif
save_window_offset(env, cwp1);
offset++;
}
cwp1 = cpu_cwp_inc(env, env->cwp + 1);
#ifndef TARGET_SPARC64
/* set wim so that restore will reload the registers */
env->wim = 1 << cwp1;
#endif
#if defined(DEBUG_WIN)
printf("flush_windows: nb=%d\n", offset - 1);
#endif
}
void cpu_loop (CPUSPARCState *env)
{
int trapnr, ret;
target_siginfo_t info;
while (1) {
trapnr = cpu_sparc_exec (env);
switch (trapnr) {
#ifndef TARGET_SPARC64
case 0x88:
case 0x90:
#else
case 0x110:
case 0x16d:
#endif
ret = do_syscall (env, env->gregs[1],
env->regwptr[0], env->regwptr[1],
env->regwptr[2], env->regwptr[3],
env->regwptr[4], env->regwptr[5]);
if ((unsigned int)ret >= (unsigned int)(-515)) {
#if defined(TARGET_SPARC64) && !defined(TARGET_ABI32)
env->xcc |= PSR_CARRY;
#else
env->psr |= PSR_CARRY;
#endif
ret = -ret;
} else {
#if defined(TARGET_SPARC64) && !defined(TARGET_ABI32)
env->xcc &= ~PSR_CARRY;
#else
env->psr &= ~PSR_CARRY;
#endif
}
env->regwptr[0] = ret;
/* next instruction */
env->pc = env->npc;
env->npc = env->npc + 4;
break;
case 0x83: /* flush windows */
#ifdef TARGET_ABI32
case 0x103:
#endif
flush_windows(env);
/* next instruction */
env->pc = env->npc;
env->npc = env->npc + 4;
break;
#ifndef TARGET_SPARC64
case TT_WIN_OVF: /* window overflow */
save_window(env);
break;
case TT_WIN_UNF: /* window underflow */
restore_window(env);
break;
case TT_TFAULT:
case TT_DFAULT:
{
info.si_signo = SIGSEGV;
info.si_errno = 0;
/* XXX: check env->error_code */
info.si_code = TARGET_SEGV_MAPERR;
info._sifields._sigfault._addr = env->mmuregs[4];
queue_signal(env, info.si_signo, &info);
}
break;
#else
case TT_SPILL: /* window overflow */
save_window(env);
break;
case TT_FILL: /* window underflow */
restore_window(env);
break;
case TT_TFAULT:
case TT_DFAULT:
{
info.si_signo = SIGSEGV;
info.si_errno = 0;
/* XXX: check env->error_code */
info.si_code = TARGET_SEGV_MAPERR;
if (trapnr == TT_DFAULT)
info._sifields._sigfault._addr = env->dmmuregs[4];
else
info._sifields._sigfault._addr = cpu_tsptr(env)->tpc;
queue_signal(env, info.si_signo, &info);
}
break;
#ifndef TARGET_ABI32
case 0x16e:
flush_windows(env);
sparc64_get_context(env);
break;
case 0x16f:
flush_windows(env);
sparc64_set_context(env);
break;
#endif
#endif
case EXCP_INTERRUPT:
/* just indicate that signals should be handled asap */
break;
case EXCP_DEBUG:
{
int sig;
sig = gdb_handlesig (env, TARGET_SIGTRAP);
if (sig)
{
info.si_signo = sig;
info.si_errno = 0;
info.si_code = TARGET_TRAP_BRKPT;
queue_signal(env, info.si_signo, &info);
}
}
break;
default:
printf ("Unhandled trap: 0x%x\n", trapnr);
cpu_dump_state(env, stderr, fprintf, 0);
exit (1);
}
process_pending_signals (env);
}
}
#endif
#ifdef TARGET_PPC
static inline uint64_t cpu_ppc_get_tb (CPUState *env)
{
/* TO FIX */
return 0;
}
uint32_t cpu_ppc_load_tbl (CPUState *env)
{
return cpu_ppc_get_tb(env) & 0xFFFFFFFF;
}
uint32_t cpu_ppc_load_tbu (CPUState *env)
{
return cpu_ppc_get_tb(env) >> 32;
}
uint32_t cpu_ppc_load_atbl (CPUState *env)
{
return cpu_ppc_get_tb(env) & 0xFFFFFFFF;
}
uint32_t cpu_ppc_load_atbu (CPUState *env)
{
return cpu_ppc_get_tb(env) >> 32;
}
uint32_t cpu_ppc601_load_rtcu (CPUState *env)
__attribute__ (( alias ("cpu_ppc_load_tbu") ));
uint32_t cpu_ppc601_load_rtcl (CPUState *env)
{
return cpu_ppc_load_tbl(env) & 0x3FFFFF80;
}
/* XXX: to be fixed */
int ppc_dcr_read (ppc_dcr_t *dcr_env, int dcrn, target_ulong *valp)
{
return -1;
}
int ppc_dcr_write (ppc_dcr_t *dcr_env, int dcrn, target_ulong val)
{
return -1;
}
#define EXCP_DUMP(env, fmt, ...) \
do { \
fprintf(stderr, fmt , ## __VA_ARGS__); \
cpu_dump_state(env, stderr, fprintf, 0); \
qemu_log(fmt, ## __VA_ARGS__); \
if (logfile) \
log_cpu_state(env, 0); \
} while (0)
static int do_store_exclusive(CPUPPCState *env)
{
target_ulong addr;
target_ulong page_addr;
target_ulong val;
int flags;
int segv = 0;
addr = env->reserve_ea;
page_addr = addr & TARGET_PAGE_MASK;
start_exclusive();
mmap_lock();
flags = page_get_flags(page_addr);
if ((flags & PAGE_READ) == 0) {
segv = 1;
} else {
int reg = env->reserve_info & 0x1f;
int size = (env->reserve_info >> 5) & 0xf;
int stored = 0;
if (addr == env->reserve_addr) {
switch (size) {
case 1: segv = get_user_u8(val, addr); break;
case 2: segv = get_user_u16(val, addr); break;
case 4: segv = get_user_u32(val, addr); break;
#if defined(TARGET_PPC64)
case 8: segv = get_user_u64(val, addr); break;
#endif
default: abort();
}
if (!segv && val == env->reserve_val) {
val = env->gpr[reg];
switch (size) {
case 1: segv = put_user_u8(val, addr); break;
case 2: segv = put_user_u16(val, addr); break;
case 4: segv = put_user_u32(val, addr); break;
#if defined(TARGET_PPC64)
case 8: segv = put_user_u64(val, addr); break;
#endif
default: abort();
}
if (!segv) {
stored = 1;
}
}
}
env->crf[0] = (stored << 1) | xer_so;
env->reserve_addr = (target_ulong)-1;
}
if (!segv) {
env->nip += 4;
}
mmap_unlock();
end_exclusive();
return segv;
}
void cpu_loop(CPUPPCState *env)
{
target_siginfo_t info;
int trapnr;
uint32_t ret;
for(;;) {
cpu_exec_start(env);
trapnr = cpu_ppc_exec(env);
cpu_exec_end(env);
switch(trapnr) {
case POWERPC_EXCP_NONE:
/* Just go on */
break;
case POWERPC_EXCP_CRITICAL: /* Critical input */
cpu_abort(env, "Critical interrupt while in user mode. "
"Aborting\n");
break;
case POWERPC_EXCP_MCHECK: /* Machine check exception */
cpu_abort(env, "Machine check exception while in user mode. "
"Aborting\n");
break;
case POWERPC_EXCP_DSI: /* Data storage exception */
EXCP_DUMP(env, "Invalid data memory access: 0x" TARGET_FMT_lx "\n",
env->spr[SPR_DAR]);
/* XXX: check this. Seems bugged */
switch (env->error_code & 0xFF000000) {
case 0x40000000:
info.si_signo = TARGET_SIGSEGV;
info.si_errno = 0;
info.si_code = TARGET_SEGV_MAPERR;
break;
case 0x04000000:
info.si_signo = TARGET_SIGILL;
info.si_errno = 0;
info.si_code = TARGET_ILL_ILLADR;
break;
case 0x08000000:
info.si_signo = TARGET_SIGSEGV;
info.si_errno = 0;
info.si_code = TARGET_SEGV_ACCERR;
break;
default:
/* Let's send a regular segfault... */
EXCP_DUMP(env, "Invalid segfault errno (%02x)\n",
env->error_code);
info.si_signo = TARGET_SIGSEGV;
info.si_errno = 0;
info.si_code = TARGET_SEGV_MAPERR;
break;
}
info._sifields._sigfault._addr = env->nip;
queue_signal(env, info.si_signo, &info);
break;
case POWERPC_EXCP_ISI: /* Instruction storage exception */
EXCP_DUMP(env, "Invalid instruction fetch: 0x\n" TARGET_FMT_lx
"\n", env->spr[SPR_SRR0]);
/* XXX: check this */
switch (env->error_code & 0xFF000000) {
case 0x40000000:
info.si_signo = TARGET_SIGSEGV;
info.si_errno = 0;
info.si_code = TARGET_SEGV_MAPERR;
break;
case 0x10000000:
case 0x08000000:
info.si_signo = TARGET_SIGSEGV;
info.si_errno = 0;
info.si_code = TARGET_SEGV_ACCERR;
break;
default:
/* Let's send a regular segfault... */
EXCP_DUMP(env, "Invalid segfault errno (%02x)\n",
env->error_code);
info.si_signo = TARGET_SIGSEGV;
info.si_errno = 0;
info.si_code = TARGET_SEGV_MAPERR;
break;
}
info._sifields._sigfault._addr = env->nip - 4;
queue_signal(env, info.si_signo, &info);
break;
case POWERPC_EXCP_EXTERNAL: /* External input */
cpu_abort(env, "External interrupt while in user mode. "
"Aborting\n");
break;
case POWERPC_EXCP_ALIGN: /* Alignment exception */
EXCP_DUMP(env, "Unaligned memory access\n");
/* XXX: check this */
info.si_signo = TARGET_SIGBUS;
info.si_errno = 0;
info.si_code = TARGET_BUS_ADRALN;
info._sifields._sigfault._addr = env->nip - 4;
queue_signal(env, info.si_signo, &info);
break;
case POWERPC_EXCP_PROGRAM: /* Program exception */
/* XXX: check this */
switch (env->error_code & ~0xF) {
case POWERPC_EXCP_FP:
EXCP_DUMP(env, "Floating point program exception\n");
info.si_signo = TARGET_SIGFPE;
info.si_errno = 0;
switch (env->error_code & 0xF) {
case POWERPC_EXCP_FP_OX:
info.si_code = TARGET_FPE_FLTOVF;
break;
case POWERPC_EXCP_FP_UX:
info.si_code = TARGET_FPE_FLTUND;
break;
case POWERPC_EXCP_FP_ZX:
case POWERPC_EXCP_FP_VXZDZ:
info.si_code = TARGET_FPE_FLTDIV;
break;
case POWERPC_EXCP_FP_XX:
info.si_code = TARGET_FPE_FLTRES;
break;
case POWERPC_EXCP_FP_VXSOFT:
info.si_code = TARGET_FPE_FLTINV;
break;
case POWERPC_EXCP_FP_VXSNAN:
case POWERPC_EXCP_FP_VXISI:
case POWERPC_EXCP_FP_VXIDI:
case POWERPC_EXCP_FP_VXIMZ:
case POWERPC_EXCP_FP_VXVC:
case POWERPC_EXCP_FP_VXSQRT:
case POWERPC_EXCP_FP_VXCVI:
info.si_code = TARGET_FPE_FLTSUB;
break;
default:
EXCP_DUMP(env, "Unknown floating point exception (%02x)\n",
env->error_code);
break;
}
break;
case POWERPC_EXCP_INVAL:
EXCP_DUMP(env, "Invalid instruction\n");
info.si_signo = TARGET_SIGILL;
info.si_errno = 0;
switch (env->error_code & 0xF) {
case POWERPC_EXCP_INVAL_INVAL:
info.si_code = TARGET_ILL_ILLOPC;
break;
case POWERPC_EXCP_INVAL_LSWX:
info.si_code = TARGET_ILL_ILLOPN;
break;
case POWERPC_EXCP_INVAL_SPR:
info.si_code = TARGET_ILL_PRVREG;
break;
case POWERPC_EXCP_INVAL_FP:
info.si_code = TARGET_ILL_COPROC;
break;
default:
EXCP_DUMP(env, "Unknown invalid operation (%02x)\n",
env->error_code & 0xF);
info.si_code = TARGET_ILL_ILLADR;
break;
}
break;
case POWERPC_EXCP_PRIV:
EXCP_DUMP(env, "Privilege violation\n");
info.si_signo = TARGET_SIGILL;
info.si_errno = 0;
switch (env->error_code & 0xF) {
case POWERPC_EXCP_PRIV_OPC:
info.si_code = TARGET_ILL_PRVOPC;
break;
case POWERPC_EXCP_PRIV_REG:
info.si_code = TARGET_ILL_PRVREG;
break;
default:
EXCP_DUMP(env, "Unknown privilege violation (%02x)\n",
env->error_code & 0xF);
info.si_code = TARGET_ILL_PRVOPC;
break;
}
break;
case POWERPC_EXCP_TRAP:
cpu_abort(env, "Tried to call a TRAP\n");
break;
default:
/* Should not happen ! */
cpu_abort(env, "Unknown program exception (%02x)\n",
env->error_code);
break;
}
info._sifields._sigfault._addr = env->nip - 4;
queue_signal(env, info.si_signo, &info);
break;
case POWERPC_EXCP_FPU: /* Floating-point unavailable exception */
EXCP_DUMP(env, "No floating point allowed\n");
info.si_signo = TARGET_SIGILL;
info.si_errno = 0;
info.si_code = TARGET_ILL_COPROC;
info._sifields._sigfault._addr = env->nip - 4;
queue_signal(env, info.si_signo, &info);
break;
case POWERPC_EXCP_SYSCALL: /* System call exception */
cpu_abort(env, "Syscall exception while in user mode. "
"Aborting\n");
break;
case POWERPC_EXCP_APU: /* Auxiliary processor unavailable */
EXCP_DUMP(env, "No APU instruction allowed\n");
info.si_signo = TARGET_SIGILL;
info.si_errno = 0;
info.si_code = TARGET_ILL_COPROC;
info._sifields._sigfault._addr = env->nip - 4;
queue_signal(env, info.si_signo, &info);
break;
case POWERPC_EXCP_DECR: /* Decrementer exception */
cpu_abort(env, "Decrementer interrupt while in user mode. "
"Aborting\n");
break;
case POWERPC_EXCP_FIT: /* Fixed-interval timer interrupt */
cpu_abort(env, "Fix interval timer interrupt while in user mode. "
"Aborting\n");
break;
case POWERPC_EXCP_WDT: /* Watchdog timer interrupt */
cpu_abort(env, "Watchdog timer interrupt while in user mode. "
"Aborting\n");
break;
case POWERPC_EXCP_DTLB: /* Data TLB error */
cpu_abort(env, "Data TLB exception while in user mode. "
"Aborting\n");
break;
case POWERPC_EXCP_ITLB: /* Instruction TLB error */
cpu_abort(env, "Instruction TLB exception while in user mode. "
"Aborting\n");
break;
case POWERPC_EXCP_SPEU: /* SPE/embedded floating-point unavail. */
EXCP_DUMP(env, "No SPE/floating-point instruction allowed\n");
info.si_signo = TARGET_SIGILL;
info.si_errno = 0;
info.si_code = TARGET_ILL_COPROC;
info._sifields._sigfault._addr = env->nip - 4;
queue_signal(env, info.si_signo, &info);
break;
case POWERPC_EXCP_EFPDI: /* Embedded floating-point data IRQ */
cpu_abort(env, "Embedded floating-point data IRQ not handled\n");
break;
case POWERPC_EXCP_EFPRI: /* Embedded floating-point round IRQ */
cpu_abort(env, "Embedded floating-point round IRQ not handled\n");
break;
case POWERPC_EXCP_EPERFM: /* Embedded performance monitor IRQ */
cpu_abort(env, "Performance monitor exception not handled\n");
break;
case POWERPC_EXCP_DOORI: /* Embedded doorbell interrupt */
cpu_abort(env, "Doorbell interrupt while in user mode. "
"Aborting\n");
break;
case POWERPC_EXCP_DOORCI: /* Embedded doorbell critical interrupt */
cpu_abort(env, "Doorbell critical interrupt while in user mode. "
"Aborting\n");
break;
case POWERPC_EXCP_RESET: /* System reset exception */
cpu_abort(env, "Reset interrupt while in user mode. "
"Aborting\n");
break;
case POWERPC_EXCP_DSEG: /* Data segment exception */
cpu_abort(env, "Data segment exception while in user mode. "
"Aborting\n");
break;
case POWERPC_EXCP_ISEG: /* Instruction segment exception */
cpu_abort(env, "Instruction segment exception "
"while in user mode. Aborting\n");
break;
/* PowerPC 64 with hypervisor mode support */
case POWERPC_EXCP_HDECR: /* Hypervisor decrementer exception */
cpu_abort(env, "Hypervisor decrementer interrupt "
"while in user mode. Aborting\n");
break;
case POWERPC_EXCP_TRACE: /* Trace exception */
/* Nothing to do:
* we use this exception to emulate step-by-step execution mode.
*/
break;
/* PowerPC 64 with hypervisor mode support */
case POWERPC_EXCP_HDSI: /* Hypervisor data storage exception */
cpu_abort(env, "Hypervisor data storage exception "
"while in user mode. Aborting\n");
break;
case POWERPC_EXCP_HISI: /* Hypervisor instruction storage excp */
cpu_abort(env, "Hypervisor instruction storage exception "
"while in user mode. Aborting\n");
break;
case POWERPC_EXCP_HDSEG: /* Hypervisor data segment exception */
cpu_abort(env, "Hypervisor data segment exception "
"while in user mode. Aborting\n");
break;
case POWERPC_EXCP_HISEG: /* Hypervisor instruction segment excp */
cpu_abort(env, "Hypervisor instruction segment exception "
"while in user mode. Aborting\n");
break;
case POWERPC_EXCP_VPU: /* Vector unavailable exception */
EXCP_DUMP(env, "No Altivec instructions allowed\n");
info.si_signo = TARGET_SIGILL;
info.si_errno = 0;
info.si_code = TARGET_ILL_COPROC;
info._sifields._sigfault._addr = env->nip - 4;
queue_signal(env, info.si_signo, &info);
break;
case POWERPC_EXCP_PIT: /* Programmable interval timer IRQ */
cpu_abort(env, "Programable interval timer interrupt "
"while in user mode. Aborting\n");
break;
case POWERPC_EXCP_IO: /* IO error exception */
cpu_abort(env, "IO error exception while in user mode. "
"Aborting\n");
break;
case POWERPC_EXCP_RUNM: /* Run mode exception */
cpu_abort(env, "Run mode exception while in user mode. "
"Aborting\n");
break;
case POWERPC_EXCP_EMUL: /* Emulation trap exception */
cpu_abort(env, "Emulation trap exception not handled\n");
break;
case POWERPC_EXCP_IFTLB: /* Instruction fetch TLB error */
cpu_abort(env, "Instruction fetch TLB exception "
"while in user-mode. Aborting");
break;
case POWERPC_EXCP_DLTLB: /* Data load TLB miss */
cpu_abort(env, "Data load TLB exception while in user-mode. "
"Aborting");
break;
case POWERPC_EXCP_DSTLB: /* Data store TLB miss */
cpu_abort(env, "Data store TLB exception while in user-mode. "
"Aborting");
break;
case POWERPC_EXCP_FPA: /* Floating-point assist exception */
cpu_abort(env, "Floating-point assist exception not handled\n");
break;
case POWERPC_EXCP_IABR: /* Instruction address breakpoint */
cpu_abort(env, "Instruction address breakpoint exception "
"not handled\n");
break;
case POWERPC_EXCP_SMI: /* System management interrupt */
cpu_abort(env, "System management interrupt while in user mode. "
"Aborting\n");
break;
case POWERPC_EXCP_THERM: /* Thermal interrupt */
cpu_abort(env, "Thermal interrupt interrupt while in user mode. "
"Aborting\n");
break;
case POWERPC_EXCP_PERFM: /* Embedded performance monitor IRQ */
cpu_abort(env, "Performance monitor exception not handled\n");
break;
case POWERPC_EXCP_VPUA: /* Vector assist exception */
cpu_abort(env, "Vector assist exception not handled\n");
break;
case POWERPC_EXCP_SOFTP: /* Soft patch exception */
cpu_abort(env, "Soft patch exception not handled\n");
break;
case POWERPC_EXCP_MAINT: /* Maintenance exception */
cpu_abort(env, "Maintenance exception while in user mode. "
"Aborting\n");
break;
case POWERPC_EXCP_STOP: /* stop translation */
/* We did invalidate the instruction cache. Go on */
break;
case POWERPC_EXCP_BRANCH: /* branch instruction: */
/* We just stopped because of a branch. Go on */
break;
case POWERPC_EXCP_SYSCALL_USER:
/* system call in user-mode emulation */
/* WARNING:
* PPC ABI uses overflow flag in cr0 to signal an error
* in syscalls.
*/
#if 0
printf("syscall %d 0x%08x 0x%08x 0x%08x 0x%08x\n", env->gpr[0],
env->gpr[3], env->gpr[4], env->gpr[5], env->gpr[6]);
#endif
env->crf[0] &= ~0x1;
ret = do_syscall(env, env->gpr[0], env->gpr[3], env->gpr[4],
env->gpr[5], env->gpr[6], env->gpr[7],
env->gpr[8]);
if (ret == (uint32_t)(-TARGET_QEMU_ESIGRETURN)) {
/* Returning from a successful sigreturn syscall.
Avoid corrupting register state. */
break;
}
if (ret > (uint32_t)(-515)) {
env->crf[0] |= 0x1;
ret = -ret;
}
env->gpr[3] = ret;
#if 0
printf("syscall returned 0x%08x (%d)\n", ret, ret);
#endif
break;
case POWERPC_EXCP_STCX:
if (do_store_exclusive(env)) {
info.si_signo = TARGET_SIGSEGV;
info.si_errno = 0;
info.si_code = TARGET_SEGV_MAPERR;
info._sifields._sigfault._addr = env->nip;
queue_signal(env, info.si_signo, &info);
}
break;
case EXCP_DEBUG:
{
int sig;
sig = gdb_handlesig(env, TARGET_SIGTRAP);
if (sig) {
info.si_signo = sig;
info.si_errno = 0;
info.si_code = TARGET_TRAP_BRKPT;
queue_signal(env, info.si_signo, &info);
}
}
break;
case EXCP_INTERRUPT:
/* just indicate that signals should be handled asap */
break;
default:
cpu_abort(env, "Unknown exception 0x%d. Aborting\n", trapnr);
break;
}
process_pending_signals(env);
}
}
#endif
#ifdef TARGET_MIPS
#define MIPS_SYS(name, args) args,
static const uint8_t mips_syscall_args[] = {
MIPS_SYS(sys_syscall , 0) /* 4000 */
MIPS_SYS(sys_exit , 1)
MIPS_SYS(sys_fork , 0)
MIPS_SYS(sys_read , 3)
MIPS_SYS(sys_write , 3)
MIPS_SYS(sys_open , 3) /* 4005 */
MIPS_SYS(sys_close , 1)
MIPS_SYS(sys_waitpid , 3)
MIPS_SYS(sys_creat , 2)
MIPS_SYS(sys_link , 2)
MIPS_SYS(sys_unlink , 1) /* 4010 */
MIPS_SYS(sys_execve , 0)
MIPS_SYS(sys_chdir , 1)
MIPS_SYS(sys_time , 1)
MIPS_SYS(sys_mknod , 3)
MIPS_SYS(sys_chmod , 2) /* 4015 */
MIPS_SYS(sys_lchown , 3)
MIPS_SYS(sys_ni_syscall , 0)
MIPS_SYS(sys_ni_syscall , 0) /* was sys_stat */
MIPS_SYS(sys_lseek , 3)
MIPS_SYS(sys_getpid , 0) /* 4020 */
MIPS_SYS(sys_mount , 5)
MIPS_SYS(sys_oldumount , 1)
MIPS_SYS(sys_setuid , 1)
MIPS_SYS(sys_getuid , 0)
MIPS_SYS(sys_stime , 1) /* 4025 */
MIPS_SYS(sys_ptrace , 4)
MIPS_SYS(sys_alarm , 1)
MIPS_SYS(sys_ni_syscall , 0) /* was sys_fstat */
MIPS_SYS(sys_pause , 0)
MIPS_SYS(sys_utime , 2) /* 4030 */
MIPS_SYS(sys_ni_syscall , 0)
MIPS_SYS(sys_ni_syscall , 0)
MIPS_SYS(sys_access , 2)
MIPS_SYS(sys_nice , 1)
MIPS_SYS(sys_ni_syscall , 0) /* 4035 */
MIPS_SYS(sys_sync , 0)
MIPS_SYS(sys_kill , 2)
MIPS_SYS(sys_rename , 2)
MIPS_SYS(sys_mkdir , 2)
MIPS_SYS(sys_rmdir , 1) /* 4040 */
MIPS_SYS(sys_dup , 1)
MIPS_SYS(sys_pipe , 0)
MIPS_SYS(sys_times , 1)
MIPS_SYS(sys_ni_syscall , 0)
MIPS_SYS(sys_brk , 1) /* 4045 */
MIPS_SYS(sys_setgid , 1)
MIPS_SYS(sys_getgid , 0)
MIPS_SYS(sys_ni_syscall , 0) /* was signal(2) */
MIPS_SYS(sys_geteuid , 0)
MIPS_SYS(sys_getegid , 0) /* 4050 */
MIPS_SYS(sys_acct , 0)
MIPS_SYS(sys_umount , 2)
MIPS_SYS(sys_ni_syscall , 0)
MIPS_SYS(sys_ioctl , 3)
MIPS_SYS(sys_fcntl , 3) /* 4055 */
MIPS_SYS(sys_ni_syscall , 2)
MIPS_SYS(sys_setpgid , 2)
MIPS_SYS(sys_ni_syscall , 0)
MIPS_SYS(sys_olduname , 1)
MIPS_SYS(sys_umask , 1) /* 4060 */
MIPS_SYS(sys_chroot , 1)
MIPS_SYS(sys_ustat , 2)
MIPS_SYS(sys_dup2 , 2)
MIPS_SYS(sys_getppid , 0)
MIPS_SYS(sys_getpgrp , 0) /* 4065 */
MIPS_SYS(sys_setsid , 0)
MIPS_SYS(sys_sigaction , 3)
MIPS_SYS(sys_sgetmask , 0)
MIPS_SYS(sys_ssetmask , 1)
MIPS_SYS(sys_setreuid , 2) /* 4070 */
MIPS_SYS(sys_setregid , 2)
MIPS_SYS(sys_sigsuspend , 0)
MIPS_SYS(sys_sigpending , 1)
MIPS_SYS(sys_sethostname , 2)
MIPS_SYS(sys_setrlimit , 2) /* 4075 */
MIPS_SYS(sys_getrlimit , 2)
MIPS_SYS(sys_getrusage , 2)
MIPS_SYS(sys_gettimeofday, 2)
MIPS_SYS(sys_settimeofday, 2)
MIPS_SYS(sys_getgroups , 2) /* 4080 */
MIPS_SYS(sys_setgroups , 2)
MIPS_SYS(sys_ni_syscall , 0) /* old_select */
MIPS_SYS(sys_symlink , 2)
MIPS_SYS(sys_ni_syscall , 0) /* was sys_lstat */
MIPS_SYS(sys_readlink , 3) /* 4085 */
MIPS_SYS(sys_uselib , 1)
MIPS_SYS(sys_swapon , 2)
MIPS_SYS(sys_reboot , 3)
MIPS_SYS(old_readdir , 3)
MIPS_SYS(old_mmap , 6) /* 4090 */
MIPS_SYS(sys_munmap , 2)
MIPS_SYS(sys_truncate , 2)
MIPS_SYS(sys_ftruncate , 2)
MIPS_SYS(sys_fchmod , 2)
MIPS_SYS(sys_fchown , 3) /* 4095 */
MIPS_SYS(sys_getpriority , 2)
MIPS_SYS(sys_setpriority , 3)
MIPS_SYS(sys_ni_syscall , 0)
MIPS_SYS(sys_statfs , 2)
MIPS_SYS(sys_fstatfs , 2) /* 4100 */
MIPS_SYS(sys_ni_syscall , 0) /* was ioperm(2) */
MIPS_SYS(sys_socketcall , 2)
MIPS_SYS(sys_syslog , 3)
MIPS_SYS(sys_setitimer , 3)
MIPS_SYS(sys_getitimer , 2) /* 4105 */
MIPS_SYS(sys_newstat , 2)
MIPS_SYS(sys_newlstat , 2)
MIPS_SYS(sys_newfstat , 2)
MIPS_SYS(sys_uname , 1)
MIPS_SYS(sys_ni_syscall , 0) /* 4110 was iopl(2) */
MIPS_SYS(sys_vhangup , 0)
MIPS_SYS(sys_ni_syscall , 0) /* was sys_idle() */
MIPS_SYS(sys_ni_syscall , 0) /* was sys_vm86 */
MIPS_SYS(sys_wait4 , 4)
MIPS_SYS(sys_swapoff , 1) /* 4115 */
MIPS_SYS(sys_sysinfo , 1)
MIPS_SYS(sys_ipc , 6)
MIPS_SYS(sys_fsync , 1)
MIPS_SYS(sys_sigreturn , 0)
MIPS_SYS(sys_clone , 6) /* 4120 */
MIPS_SYS(sys_setdomainname, 2)
MIPS_SYS(sys_newuname , 1)
MIPS_SYS(sys_ni_syscall , 0) /* sys_modify_ldt */
MIPS_SYS(sys_adjtimex , 1)
MIPS_SYS(sys_mprotect , 3) /* 4125 */
MIPS_SYS(sys_sigprocmask , 3)
MIPS_SYS(sys_ni_syscall , 0) /* was create_module */
MIPS_SYS(sys_init_module , 5)
MIPS_SYS(sys_delete_module, 1)
MIPS_SYS(sys_ni_syscall , 0) /* 4130 was get_kernel_syms */
MIPS_SYS(sys_quotactl , 0)
MIPS_SYS(sys_getpgid , 1)
MIPS_SYS(sys_fchdir , 1)
MIPS_SYS(sys_bdflush , 2)
MIPS_SYS(sys_sysfs , 3) /* 4135 */
MIPS_SYS(sys_personality , 1)
MIPS_SYS(sys_ni_syscall , 0) /* for afs_syscall */
MIPS_SYS(sys_setfsuid , 1)
MIPS_SYS(sys_setfsgid , 1)
MIPS_SYS(sys_llseek , 5) /* 4140 */
MIPS_SYS(sys_getdents , 3)
MIPS_SYS(sys_select , 5)
MIPS_SYS(sys_flock , 2)
MIPS_SYS(sys_msync , 3)
MIPS_SYS(sys_readv , 3) /* 4145 */
MIPS_SYS(sys_writev , 3)
MIPS_SYS(sys_cacheflush , 3)
MIPS_SYS(sys_cachectl , 3)
MIPS_SYS(sys_sysmips , 4)
MIPS_SYS(sys_ni_syscall , 0) /* 4150 */
MIPS_SYS(sys_getsid , 1)
MIPS_SYS(sys_fdatasync , 0)
MIPS_SYS(sys_sysctl , 1)
MIPS_SYS(sys_mlock , 2)
MIPS_SYS(sys_munlock , 2) /* 4155 */
MIPS_SYS(sys_mlockall , 1)
MIPS_SYS(sys_munlockall , 0)
MIPS_SYS(sys_sched_setparam, 2)
MIPS_SYS(sys_sched_getparam, 2)
MIPS_SYS(sys_sched_setscheduler, 3) /* 4160 */
MIPS_SYS(sys_sched_getscheduler, 1)
MIPS_SYS(sys_sched_yield , 0)
MIPS_SYS(sys_sched_get_priority_max, 1)
MIPS_SYS(sys_sched_get_priority_min, 1)
MIPS_SYS(sys_sched_rr_get_interval, 2) /* 4165 */
MIPS_SYS(sys_nanosleep, 2)
MIPS_SYS(sys_mremap , 4)
MIPS_SYS(sys_accept , 3)
MIPS_SYS(sys_bind , 3)
MIPS_SYS(sys_connect , 3) /* 4170 */
MIPS_SYS(sys_getpeername , 3)
MIPS_SYS(sys_getsockname , 3)
MIPS_SYS(sys_getsockopt , 5)
MIPS_SYS(sys_listen , 2)
MIPS_SYS(sys_recv , 4) /* 4175 */
MIPS_SYS(sys_recvfrom , 6)
MIPS_SYS(sys_recvmsg , 3)
MIPS_SYS(sys_send , 4)
MIPS_SYS(sys_sendmsg , 3)
MIPS_SYS(sys_sendto , 6) /* 4180 */
MIPS_SYS(sys_setsockopt , 5)
MIPS_SYS(sys_shutdown , 2)
MIPS_SYS(sys_socket , 3)
MIPS_SYS(sys_socketpair , 4)
MIPS_SYS(sys_setresuid , 3) /* 4185 */
MIPS_SYS(sys_getresuid , 3)
MIPS_SYS(sys_ni_syscall , 0) /* was sys_query_module */
MIPS_SYS(sys_poll , 3)
MIPS_SYS(sys_nfsservctl , 3)
MIPS_SYS(sys_setresgid , 3) /* 4190 */
MIPS_SYS(sys_getresgid , 3)
MIPS_SYS(sys_prctl , 5)
MIPS_SYS(sys_rt_sigreturn, 0)
MIPS_SYS(sys_rt_sigaction, 4)
MIPS_SYS(sys_rt_sigprocmask, 4) /* 4195 */
MIPS_SYS(sys_rt_sigpending, 2)
MIPS_SYS(sys_rt_sigtimedwait, 4)
MIPS_SYS(sys_rt_sigqueueinfo, 3)
MIPS_SYS(sys_rt_sigsuspend, 0)
MIPS_SYS(sys_pread64 , 6) /* 4200 */
MIPS_SYS(sys_pwrite64 , 6)
MIPS_SYS(sys_chown , 3)
MIPS_SYS(sys_getcwd , 2)
MIPS_SYS(sys_capget , 2)
MIPS_SYS(sys_capset , 2) /* 4205 */
MIPS_SYS(sys_sigaltstack , 0)
MIPS_SYS(sys_sendfile , 4)
MIPS_SYS(sys_ni_syscall , 0)
MIPS_SYS(sys_ni_syscall , 0)
MIPS_SYS(sys_mmap2 , 6) /* 4210 */
MIPS_SYS(sys_truncate64 , 4)
MIPS_SYS(sys_ftruncate64 , 4)
MIPS_SYS(sys_stat64 , 2)
MIPS_SYS(sys_lstat64 , 2)
MIPS_SYS(sys_fstat64 , 2) /* 4215 */
MIPS_SYS(sys_pivot_root , 2)
MIPS_SYS(sys_mincore , 3)
MIPS_SYS(sys_madvise , 3)
MIPS_SYS(sys_getdents64 , 3)
MIPS_SYS(sys_fcntl64 , 3) /* 4220 */
MIPS_SYS(sys_ni_syscall , 0)
MIPS_SYS(sys_gettid , 0)
MIPS_SYS(sys_readahead , 5)
MIPS_SYS(sys_setxattr , 5)
MIPS_SYS(sys_lsetxattr , 5) /* 4225 */
MIPS_SYS(sys_fsetxattr , 5)
MIPS_SYS(sys_getxattr , 4)
MIPS_SYS(sys_lgetxattr , 4)
MIPS_SYS(sys_fgetxattr , 4)
MIPS_SYS(sys_listxattr , 3) /* 4230 */
MIPS_SYS(sys_llistxattr , 3)
MIPS_SYS(sys_flistxattr , 3)
MIPS_SYS(sys_removexattr , 2)
MIPS_SYS(sys_lremovexattr, 2)
MIPS_SYS(sys_fremovexattr, 2) /* 4235 */
MIPS_SYS(sys_tkill , 2)
MIPS_SYS(sys_sendfile64 , 5)
MIPS_SYS(sys_futex , 2)
MIPS_SYS(sys_sched_setaffinity, 3)
MIPS_SYS(sys_sched_getaffinity, 3) /* 4240 */
MIPS_SYS(sys_io_setup , 2)
MIPS_SYS(sys_io_destroy , 1)
MIPS_SYS(sys_io_getevents, 5)
MIPS_SYS(sys_io_submit , 3)
MIPS_SYS(sys_io_cancel , 3) /* 4245 */
MIPS_SYS(sys_exit_group , 1)
MIPS_SYS(sys_lookup_dcookie, 3)
MIPS_SYS(sys_epoll_create, 1)
MIPS_SYS(sys_epoll_ctl , 4)
MIPS_SYS(sys_epoll_wait , 3) /* 4250 */
MIPS_SYS(sys_remap_file_pages, 5)
MIPS_SYS(sys_set_tid_address, 1)
MIPS_SYS(sys_restart_syscall, 0)
MIPS_SYS(sys_fadvise64_64, 7)
MIPS_SYS(sys_statfs64 , 3) /* 4255 */
MIPS_SYS(sys_fstatfs64 , 2)
MIPS_SYS(sys_timer_create, 3)
MIPS_SYS(sys_timer_settime, 4)
MIPS_SYS(sys_timer_gettime, 2)
MIPS_SYS(sys_timer_getoverrun, 1) /* 4260 */
MIPS_SYS(sys_timer_delete, 1)
MIPS_SYS(sys_clock_settime, 2)
MIPS_SYS(sys_clock_gettime, 2)
MIPS_SYS(sys_clock_getres, 2)
MIPS_SYS(sys_clock_nanosleep, 4) /* 4265 */
MIPS_SYS(sys_tgkill , 3)
MIPS_SYS(sys_utimes , 2)
MIPS_SYS(sys_mbind , 4)
MIPS_SYS(sys_ni_syscall , 0) /* sys_get_mempolicy */
MIPS_SYS(sys_ni_syscall , 0) /* 4270 sys_set_mempolicy */
MIPS_SYS(sys_mq_open , 4)
MIPS_SYS(sys_mq_unlink , 1)
MIPS_SYS(sys_mq_timedsend, 5)
MIPS_SYS(sys_mq_timedreceive, 5)
MIPS_SYS(sys_mq_notify , 2) /* 4275 */
MIPS_SYS(sys_mq_getsetattr, 3)
MIPS_SYS(sys_ni_syscall , 0) /* sys_vserver */
MIPS_SYS(sys_waitid , 4)
MIPS_SYS(sys_ni_syscall , 0) /* available, was setaltroot */
MIPS_SYS(sys_add_key , 5)
MIPS_SYS(sys_request_key, 4)
MIPS_SYS(sys_keyctl , 5)
MIPS_SYS(sys_set_thread_area, 1)
MIPS_SYS(sys_inotify_init, 0)
MIPS_SYS(sys_inotify_add_watch, 3) /* 4285 */
MIPS_SYS(sys_inotify_rm_watch, 2)
MIPS_SYS(sys_migrate_pages, 4)
MIPS_SYS(sys_openat, 4)
MIPS_SYS(sys_mkdirat, 3)
MIPS_SYS(sys_mknodat, 4) /* 4290 */
MIPS_SYS(sys_fchownat, 5)
MIPS_SYS(sys_futimesat, 3)
MIPS_SYS(sys_fstatat64, 4)
MIPS_SYS(sys_unlinkat, 3)
MIPS_SYS(sys_renameat, 4) /* 4295 */
MIPS_SYS(sys_linkat, 5)
MIPS_SYS(sys_symlinkat, 3)
MIPS_SYS(sys_readlinkat, 4)
MIPS_SYS(sys_fchmodat, 3)
MIPS_SYS(sys_faccessat, 3) /* 4300 */
MIPS_SYS(sys_pselect6, 6)
MIPS_SYS(sys_ppoll, 5)
MIPS_SYS(sys_unshare, 1)
MIPS_SYS(sys_splice, 4)
MIPS_SYS(sys_sync_file_range, 7) /* 4305 */
MIPS_SYS(sys_tee, 4)
MIPS_SYS(sys_vmsplice, 4)
MIPS_SYS(sys_move_pages, 6)
MIPS_SYS(sys_set_robust_list, 2)
MIPS_SYS(sys_get_robust_list, 3) /* 4310 */
MIPS_SYS(sys_kexec_load, 4)
MIPS_SYS(sys_getcpu, 3)
MIPS_SYS(sys_epoll_pwait, 6)
MIPS_SYS(sys_ioprio_set, 3)
MIPS_SYS(sys_ioprio_get, 2)
};
#undef MIPS_SYS
static int do_store_exclusive(CPUMIPSState *env)
{
target_ulong addr;
target_ulong page_addr;
target_ulong val;
int flags;
int segv = 0;
int reg;
int d;
addr = env->CP0_LLAddr;
page_addr = addr & TARGET_PAGE_MASK;
start_exclusive();
mmap_lock();
flags = page_get_flags(page_addr);
if ((flags & PAGE_READ) == 0) {
segv = 1;
} else {
reg = env->llreg & 0x1f;
d = (env->llreg & 0x20) != 0;
if (d) {
segv = get_user_s64(val, addr);
} else {
segv = get_user_s32(val, addr);
}
if (!segv) {
if (val != env->llval) {
env->active_tc.gpr[reg] = 0;
} else {
if (d) {
segv = put_user_u64(env->llnewval, addr);
} else {
segv = put_user_u32(env->llnewval, addr);
}
if (!segv) {
env->active_tc.gpr[reg] = 1;
}
}
}
}
env->CP0_LLAddr = -1;
if (!segv) {
env->active_tc.PC += 4;
}
mmap_unlock();
end_exclusive();
return segv;
}
void cpu_loop(CPUMIPSState *env)
{
target_siginfo_t info;
int trapnr, ret;
unsigned int syscall_num;
for(;;) {
cpu_exec_start(env);
trapnr = cpu_mips_exec(env);
cpu_exec_end(env);
switch(trapnr) {
case EXCP_SYSCALL:
syscall_num = env->active_tc.gpr[2] - 4000;
env->active_tc.PC += 4;
if (syscall_num >= sizeof(mips_syscall_args)) {
ret = -ENOSYS;
} else {
int nb_args;
abi_ulong sp_reg;
abi_ulong arg5 = 0, arg6 = 0, arg7 = 0, arg8 = 0;
nb_args = mips_syscall_args[syscall_num];
sp_reg = env->active_tc.gpr[29];
switch (nb_args) {
/* these arguments are taken from the stack */
/* FIXME - what to do if get_user() fails? */
case 8: get_user_ual(arg8, sp_reg + 28);
case 7: get_user_ual(arg7, sp_reg + 24);
case 6: get_user_ual(arg6, sp_reg + 20);
case 5: get_user_ual(arg5, sp_reg + 16);
default:
break;
}
ret = do_syscall(env, env->active_tc.gpr[2],
env->active_tc.gpr[4],
env->active_tc.gpr[5],
env->active_tc.gpr[6],
env->active_tc.gpr[7],
arg5, arg6/*, arg7, arg8*/);
}
if (ret == -TARGET_QEMU_ESIGRETURN) {
/* Returning from a successful sigreturn syscall.
Avoid clobbering register state. */
break;
}
if ((unsigned int)ret >= (unsigned int)(-1133)) {
env->active_tc.gpr[7] = 1; /* error flag */
ret = -ret;
} else {
env->active_tc.gpr[7] = 0; /* error flag */
}
env->active_tc.gpr[2] = ret;
break;
case EXCP_TLBL:
case EXCP_TLBS:
info.si_signo = TARGET_SIGSEGV;
info.si_errno = 0;
/* XXX: check env->error_code */
info.si_code = TARGET_SEGV_MAPERR;
info._sifields._sigfault._addr = env->CP0_BadVAddr;
queue_signal(env, info.si_signo, &info);
break;
case EXCP_CpU:
case EXCP_RI:
info.si_signo = TARGET_SIGILL;
info.si_errno = 0;
info.si_code = 0;
queue_signal(env, info.si_signo, &info);
break;
case EXCP_INTERRUPT:
/* just indicate that signals should be handled asap */
break;
case EXCP_DEBUG:
{
int sig;
sig = gdb_handlesig (env, TARGET_SIGTRAP);
if (sig)
{
info.si_signo = sig;
info.si_errno = 0;
info.si_code = TARGET_TRAP_BRKPT;
queue_signal(env, info.si_signo, &info);
}
}
break;
case EXCP_SC:
if (do_store_exclusive(env)) {
info.si_signo = TARGET_SIGSEGV;
info.si_errno = 0;
info.si_code = TARGET_SEGV_MAPERR;
info._sifields._sigfault._addr = env->active_tc.PC;
queue_signal(env, info.si_signo, &info);
}
break;
default:
// error:
fprintf(stderr, "qemu: unhandled CPU exception 0x%x - aborting\n",
trapnr);
cpu_dump_state(env, stderr, fprintf, 0);
abort();
}
process_pending_signals(env);
}
}
#endif
#ifdef TARGET_SH4
void cpu_loop (CPUState *env)
{
int trapnr, ret;
target_siginfo_t info;
while (1) {
trapnr = cpu_sh4_exec (env);
switch (trapnr) {
case 0x160:
env->pc += 2;
ret = do_syscall(env,
env->gregs[3],
env->gregs[4],
env->gregs[5],
env->gregs[6],
env->gregs[7],
env->gregs[0],
env->gregs[1]);
env->gregs[0] = ret;
break;
case EXCP_INTERRUPT:
/* just indicate that signals should be handled asap */
break;
case EXCP_DEBUG:
{
int sig;
sig = gdb_handlesig (env, TARGET_SIGTRAP);
if (sig)
{
info.si_signo = sig;
info.si_errno = 0;
info.si_code = TARGET_TRAP_BRKPT;
queue_signal(env, info.si_signo, &info);
}
}
break;
case 0xa0:
case 0xc0:
info.si_signo = SIGSEGV;
info.si_errno = 0;
info.si_code = TARGET_SEGV_MAPERR;
info._sifields._sigfault._addr = env->tea;
queue_signal(env, info.si_signo, &info);
break;
default:
printf ("Unhandled trap: 0x%x\n", trapnr);
cpu_dump_state(env, stderr, fprintf, 0);
exit (1);
}
process_pending_signals (env);
}
}
#endif
#ifdef TARGET_CRIS
void cpu_loop (CPUState *env)
{
int trapnr, ret;
target_siginfo_t info;
while (1) {
trapnr = cpu_cris_exec (env);
switch (trapnr) {
case 0xaa:
{
info.si_signo = SIGSEGV;
info.si_errno = 0;
/* XXX: check env->error_code */
info.si_code = TARGET_SEGV_MAPERR;
info._sifields._sigfault._addr = env->pregs[PR_EDA];
queue_signal(env, info.si_signo, &info);
}
break;
case EXCP_INTERRUPT:
/* just indicate that signals should be handled asap */
break;
case EXCP_BREAK:
ret = do_syscall(env,
env->regs[9],
env->regs[10],
env->regs[11],
env->regs[12],
env->regs[13],
env->pregs[7],
env->pregs[11]);
env->regs[10] = ret;
break;
case EXCP_DEBUG:
{
int sig;
sig = gdb_handlesig (env, TARGET_SIGTRAP);
if (sig)
{
info.si_signo = sig;
info.si_errno = 0;
info.si_code = TARGET_TRAP_BRKPT;
queue_signal(env, info.si_signo, &info);
}
}
break;
default:
printf ("Unhandled trap: 0x%x\n", trapnr);
cpu_dump_state(env, stderr, fprintf, 0);
exit (1);
}
process_pending_signals (env);
}
}
#endif
#ifdef TARGET_MICROBLAZE
void cpu_loop (CPUState *env)
{
int trapnr, ret;
target_siginfo_t info;
while (1) {
trapnr = cpu_mb_exec (env);
switch (trapnr) {
case 0xaa:
{
info.si_signo = SIGSEGV;
info.si_errno = 0;
/* XXX: check env->error_code */
info.si_code = TARGET_SEGV_MAPERR;
info._sifields._sigfault._addr = 0;
queue_signal(env, info.si_signo, &info);
}
break;
case EXCP_INTERRUPT:
/* just indicate that signals should be handled asap */
break;
case EXCP_BREAK:
/* Return address is 4 bytes after the call. */
env->regs[14] += 4;
ret = do_syscall(env,
env->regs[12],
env->regs[5],
env->regs[6],
env->regs[7],
env->regs[8],
env->regs[9],
env->regs[10]);
env->regs[3] = ret;
env->sregs[SR_PC] = env->regs[14];
break;
case EXCP_DEBUG:
{
int sig;
sig = gdb_handlesig (env, TARGET_SIGTRAP);
if (sig)
{
info.si_signo = sig;
info.si_errno = 0;
info.si_code = TARGET_TRAP_BRKPT;
queue_signal(env, info.si_signo, &info);
}
}
break;
default:
printf ("Unhandled trap: 0x%x\n", trapnr);
cpu_dump_state(env, stderr, fprintf, 0);
exit (1);
}
process_pending_signals (env);
}
}
#endif
#ifdef TARGET_M68K
void cpu_loop(CPUM68KState *env)
{
int trapnr;
unsigned int n;
target_siginfo_t info;
TaskState *ts = env->opaque;
for(;;) {
trapnr = cpu_m68k_exec(env);
switch(trapnr) {
case EXCP_ILLEGAL:
{
if (ts->sim_syscalls) {
uint16_t nr;
nr = lduw(env->pc + 2);
env->pc += 4;
do_m68k_simcall(env, nr);
} else {
goto do_sigill;
}
}
break;
case EXCP_HALT_INSN:
/* Semihosing syscall. */
env->pc += 4;
do_m68k_semihosting(env, env->dregs[0]);
break;
case EXCP_LINEA:
case EXCP_LINEF:
case EXCP_UNSUPPORTED:
do_sigill:
info.si_signo = SIGILL;
info.si_errno = 0;
info.si_code = TARGET_ILL_ILLOPN;
info._sifields._sigfault._addr = env->pc;
queue_signal(env, info.si_signo, &info);
break;
case EXCP_TRAP0:
{
ts->sim_syscalls = 0;
n = env->dregs[0];
env->pc += 2;
env->dregs[0] = do_syscall(env,
n,
env->dregs[1],
env->dregs[2],
env->dregs[3],
env->dregs[4],
env->dregs[5],
env->aregs[0]);
}
break;
case EXCP_INTERRUPT:
/* just indicate that signals should be handled asap */
break;
case EXCP_ACCESS:
{
info.si_signo = SIGSEGV;
info.si_errno = 0;
/* XXX: check env->error_code */
info.si_code = TARGET_SEGV_MAPERR;
info._sifields._sigfault._addr = env->mmu.ar;
queue_signal(env, info.si_signo, &info);
}
break;
case EXCP_DEBUG:
{
int sig;
sig = gdb_handlesig (env, TARGET_SIGTRAP);
if (sig)
{
info.si_signo = sig;
info.si_errno = 0;
info.si_code = TARGET_TRAP_BRKPT;
queue_signal(env, info.si_signo, &info);
}
}
break;
default:
fprintf(stderr, "qemu: unhandled CPU exception 0x%x - aborting\n",
trapnr);
cpu_dump_state(env, stderr, fprintf, 0);
abort();
}
process_pending_signals(env);
}
}
#endif /* TARGET_M68K */
#ifdef TARGET_ALPHA
void cpu_loop (CPUState *env)
{
int trapnr;
target_siginfo_t info;
while (1) {
trapnr = cpu_alpha_exec (env);
switch (trapnr) {
case EXCP_RESET:
fprintf(stderr, "Reset requested. Exit\n");
exit(1);
break;
case EXCP_MCHK:
fprintf(stderr, "Machine check exception. Exit\n");
exit(1);
break;
case EXCP_ARITH:
fprintf(stderr, "Arithmetic trap.\n");
exit(1);
break;
case EXCP_HW_INTERRUPT:
fprintf(stderr, "External interrupt. Exit\n");
exit(1);
break;
case EXCP_DFAULT:
fprintf(stderr, "MMU data fault\n");
exit(1);
break;
case EXCP_DTB_MISS_PAL:
fprintf(stderr, "MMU data TLB miss in PALcode\n");
exit(1);
break;
case EXCP_ITB_MISS:
fprintf(stderr, "MMU instruction TLB miss\n");
exit(1);
break;
case EXCP_ITB_ACV:
fprintf(stderr, "MMU instruction access violation\n");
exit(1);
break;
case EXCP_DTB_MISS_NATIVE:
fprintf(stderr, "MMU data TLB miss\n");
exit(1);
break;
case EXCP_UNALIGN:
fprintf(stderr, "Unaligned access\n");
exit(1);
break;
case EXCP_OPCDEC:
fprintf(stderr, "Invalid instruction\n");
exit(1);
break;
case EXCP_FEN:
fprintf(stderr, "Floating-point not allowed\n");
exit(1);
break;
case EXCP_CALL_PAL ... (EXCP_CALL_PALP - 1):
call_pal(env, (trapnr >> 6) | 0x80);
break;
case EXCP_CALL_PALP ... (EXCP_CALL_PALE - 1):
fprintf(stderr, "Privileged call to PALcode\n");
exit(1);
break;
case EXCP_DEBUG:
{
int sig;
sig = gdb_handlesig (env, TARGET_SIGTRAP);
if (sig)
{
info.si_signo = sig;
info.si_errno = 0;
info.si_code = TARGET_TRAP_BRKPT;
queue_signal(env, info.si_signo, &info);
}
}
break;
default:
printf ("Unhandled trap: 0x%x\n", trapnr);
cpu_dump_state(env, stderr, fprintf, 0);
exit (1);
}
process_pending_signals (env);
}
}
#endif /* TARGET_ALPHA */
static void usage(void)
{
printf("qemu-" TARGET_ARCH " version " QEMU_VERSION QEMU_PKGVERSION ", Copyright (c) 2003-2008 Fabrice Bellard\n"
"usage: qemu-" TARGET_ARCH " [options] program [arguments...]\n"
"Linux CPU emulator (compiled for %s emulation)\n"
"\n"
"Standard options:\n"
"-h print this help\n"
"-g port wait gdb connection to port\n"
"-L path set the elf interpreter prefix (default=%s)\n"
"-s size set the stack size in bytes (default=%ld)\n"
"-cpu model select CPU (-cpu ? for list)\n"
"-drop-ld-preload drop LD_PRELOAD for target process\n"
"-E var=value sets/modifies targets environment variable(s)\n"
"-U var unsets targets environment variable(s)\n"
"-0 argv0 forces target process argv[0] to be argv0\n"
#if defined(CONFIG_USE_GUEST_BASE)
"-B address set guest_base address to address\n"
#endif
"\n"
"Debug options:\n"
"-d options activate log (logfile=%s)\n"
"-p pagesize set the host page size to 'pagesize'\n"
"-singlestep always run in singlestep mode\n"
"-strace log system calls\n"
"\n"
"Environment variables:\n"
"QEMU_STRACE Print system calls and arguments similar to the\n"
" 'strace' program. Enable by setting to any value.\n"
"You can use -E and -U options to set/unset environment variables\n"
"for target process. It is possible to provide several variables\n"
"by repeating the option. For example:\n"
" -E var1=val2 -E var2=val2 -U LD_PRELOAD -U LD_DEBUG\n"
"Note that if you provide several changes to single variable\n"
"last change will stay in effect.\n"
,
TARGET_ARCH,
interp_prefix,
x86_stack_size,
DEBUG_LOGFILE);
exit(1);
}
THREAD CPUState *thread_env;
void task_settid(TaskState *ts)
{
if (ts->ts_tid == 0) {
#ifdef CONFIG_USE_NPTL
ts->ts_tid = (pid_t)syscall(SYS_gettid);
#else
/* when no threads are used, tid becomes pid */
ts->ts_tid = getpid();
#endif
}
}
void stop_all_tasks(void)
{
/*
* We trust that when using NPTL, start_exclusive()
* handles thread stopping correctly.
*/
start_exclusive();
}
/* Assumes contents are already zeroed. */
void init_task_state(TaskState *ts)
{
int i;
ts->used = 1;
ts->first_free = ts->sigqueue_table;
for (i = 0; i < MAX_SIGQUEUE_SIZE - 1; i++) {
ts->sigqueue_table[i].next = &ts->sigqueue_table[i + 1];
}
ts->sigqueue_table[i].next = NULL;
}
int main(int argc, char **argv, char **envp)
{
const char *filename;
const char *cpu_model;
struct target_pt_regs regs1, *regs = &regs1;
struct image_info info1, *info = &info1;
struct linux_binprm bprm;
TaskState ts1, *ts = &ts1;
CPUState *env;
int optind;
const char *r;
int gdbstub_port = 0;
char **target_environ, **wrk;
char **target_argv;
int target_argc;
envlist_t *envlist = NULL;
const char *argv0 = NULL;
int i;
int ret;
if (argc <= 1)
usage();
qemu_cache_utils_init(envp);
/* init debug */
cpu_set_log_filename(DEBUG_LOGFILE);
if ((envlist = envlist_create()) == NULL) {
(void) fprintf(stderr, "Unable to allocate envlist\n");
exit(1);
}
/* add current environment into the list */
for (wrk = environ; *wrk != NULL; wrk++) {
(void) envlist_setenv(envlist, *wrk);
}
cpu_model = NULL;
optind = 1;
for(;;) {
if (optind >= argc)
break;
r = argv[optind];
if (r[0] != '-')
break;
optind++;
r++;
if (!strcmp(r, "-")) {
break;
} else if (!strcmp(r, "d")) {
int mask;
const CPULogItem *item;
if (optind >= argc)
break;
r = argv[optind++];
mask = cpu_str_to_log_mask(r);
if (!mask) {
printf("Log items (comma separated):\n");
for(item = cpu_log_items; item->mask != 0; item++) {
printf("%-10s %s\n", item->name, item->help);
}
exit(1);
}
cpu_set_log(mask);
} else if (!strcmp(r, "E")) {
r = argv[optind++];
if (envlist_setenv(envlist, r) != 0)
usage();
} else if (!strcmp(r, "U")) {
r = argv[optind++];
if (envlist_unsetenv(envlist, r) != 0)
usage();
} else if (!strcmp(r, "0")) {
r = argv[optind++];
argv0 = r;
} else if (!strcmp(r, "s")) {
if (optind >= argc)
break;
r = argv[optind++];
x86_stack_size = strtol(r, (char **)&r, 0);
if (x86_stack_size <= 0)
usage();
if (*r == 'M')
x86_stack_size *= 1024 * 1024;
else if (*r == 'k' || *r == 'K')
x86_stack_size *= 1024;
} else if (!strcmp(r, "L")) {
interp_prefix = argv[optind++];
} else if (!strcmp(r, "p")) {
if (optind >= argc)
break;
qemu_host_page_size = atoi(argv[optind++]);
if (qemu_host_page_size == 0 ||
(qemu_host_page_size & (qemu_host_page_size - 1)) != 0) {
fprintf(stderr, "page size must be a power of two\n");
exit(1);
}
} else if (!strcmp(r, "g")) {
if (optind >= argc)
break;
gdbstub_port = atoi(argv[optind++]);
} else if (!strcmp(r, "r")) {
qemu_uname_release = argv[optind++];
} else if (!strcmp(r, "cpu")) {
cpu_model = argv[optind++];
if (cpu_model == NULL || strcmp(cpu_model, "?") == 0) {
/* XXX: implement xxx_cpu_list for targets that still miss it */
#if defined(cpu_list)
cpu_list(stdout, &fprintf);
#endif
exit(1);
}
#if defined(CONFIG_USE_GUEST_BASE)
} else if (!strcmp(r, "B")) {
guest_base = strtol(argv[optind++], NULL, 0);
have_guest_base = 1;
#endif
} else if (!strcmp(r, "drop-ld-preload")) {
(void) envlist_unsetenv(envlist, "LD_PRELOAD");
} else if (!strcmp(r, "singlestep")) {
singlestep = 1;
} else if (!strcmp(r, "strace")) {
do_strace = 1;
} else
{
usage();
}
}
if (optind >= argc)
usage();
filename = argv[optind];
exec_path = argv[optind];
/* Zero out regs */
memset(regs, 0, sizeof(struct target_pt_regs));
/* Zero out image_info */
memset(info, 0, sizeof(struct image_info));
memset(&bprm, 0, sizeof (bprm));
/* Scan interp_prefix dir for replacement files. */
init_paths(interp_prefix);
if (cpu_model == NULL) {
#if defined(TARGET_I386)
#ifdef TARGET_X86_64
cpu_model = "qemu64";
#else
cpu_model = "qemu32";
#endif
#elif defined(TARGET_ARM)
cpu_model = "any";
#elif defined(TARGET_M68K)
cpu_model = "any";
#elif defined(TARGET_SPARC)
#ifdef TARGET_SPARC64
cpu_model = "TI UltraSparc II";
#else
cpu_model = "Fujitsu MB86904";
#endif
#elif defined(TARGET_MIPS)
#if defined(TARGET_ABI_MIPSN32) || defined(TARGET_ABI_MIPSN64)
cpu_model = "20Kc";
#else
cpu_model = "24Kf";
#endif
#elif defined(TARGET_PPC)
#ifdef TARGET_PPC64
cpu_model = "970";
#else
cpu_model = "750";
#endif
#else
cpu_model = "any";
#endif
}
cpu_exec_init_all(0);
/* NOTE: we need to init the CPU at this stage to get
qemu_host_page_size */
env = cpu_init(cpu_model);
if (!env) {
fprintf(stderr, "Unable to find CPU definition\n");
exit(1);
}
#if defined(TARGET_I386) || defined(TARGET_SPARC) || defined(TARGET_PPC)
cpu_reset(env);
#endif
thread_env = env;
if (getenv("QEMU_STRACE")) {
do_strace = 1;
}
target_environ = envlist_to_environ(envlist, NULL);
envlist_free(envlist);
#if defined(CONFIG_USE_GUEST_BASE)
/*
* Now that page sizes are configured in cpu_init() we can do
* proper page alignment for guest_base.
*/
guest_base = HOST_PAGE_ALIGN(guest_base);
/*
* Read in mmap_min_addr kernel parameter. This value is used
* When loading the ELF image to determine whether guest_base
* is needed.
*
* When user has explicitly set the quest base, we skip this
* test.
*/
if (!have_guest_base) {
FILE *fp;
if ((fp = fopen("/proc/sys/vm/mmap_min_addr", "r")) != NULL) {
unsigned long tmp;
if (fscanf(fp, "%lu", &tmp) == 1) {
mmap_min_addr = tmp;
qemu_log("host mmap_min_addr=0x%lx\n", mmap_min_addr);
}
fclose(fp);
}
}
#endif /* CONFIG_USE_GUEST_BASE */
/*
* Prepare copy of argv vector for target.
*/
target_argc = argc - optind;
target_argv = calloc(target_argc + 1, sizeof (char *));
if (target_argv == NULL) {
(void) fprintf(stderr, "Unable to allocate memory for target_argv\n");
exit(1);
}
/*
* If argv0 is specified (using '-0' switch) we replace
* argv[0] pointer with the given one.
*/
i = 0;
if (argv0 != NULL) {
target_argv[i++] = strdup(argv0);
}
for (; i < target_argc; i++) {
target_argv[i] = strdup(argv[optind + i]);
}
target_argv[target_argc] = NULL;
memset(ts, 0, sizeof(TaskState));
init_task_state(ts);
/* build Task State */
ts->info = info;
ts->bprm = &bprm;
env->opaque = ts;
task_settid(ts);
ret = loader_exec(filename, target_argv, target_environ, regs,
info, &bprm);
if (ret != 0) {
printf("Error %d while loading %s\n", ret, filename);
_exit(1);
}
for (i = 0; i < target_argc; i++) {
free(target_argv[i]);
}
free(target_argv);
for (wrk = target_environ; *wrk; wrk++) {
free(*wrk);
}
free(target_environ);
if (qemu_log_enabled()) {
#if defined(CONFIG_USE_GUEST_BASE)
qemu_log("guest_base 0x%lx\n", guest_base);
#endif
log_page_dump();
qemu_log("start_brk 0x" TARGET_ABI_FMT_lx "\n", info->start_brk);
qemu_log("end_code 0x" TARGET_ABI_FMT_lx "\n", info->end_code);
qemu_log("start_code 0x" TARGET_ABI_FMT_lx "\n",
info->start_code);
qemu_log("start_data 0x" TARGET_ABI_FMT_lx "\n",
info->start_data);
qemu_log("end_data 0x" TARGET_ABI_FMT_lx "\n", info->end_data);
qemu_log("start_stack 0x" TARGET_ABI_FMT_lx "\n",
info->start_stack);
qemu_log("brk 0x" TARGET_ABI_FMT_lx "\n", info->brk);
qemu_log("entry 0x" TARGET_ABI_FMT_lx "\n", info->entry);
}
target_set_brk(info->brk);
syscall_init();
signal_init();
#if defined(TARGET_I386)
cpu_x86_set_cpl(env, 3);
env->cr[0] = CR0_PG_MASK | CR0_WP_MASK | CR0_PE_MASK;
env->hflags |= HF_PE_MASK;
if (env->cpuid_features & CPUID_SSE) {
env->cr[4] |= CR4_OSFXSR_MASK;
env->hflags |= HF_OSFXSR_MASK;
}
#ifndef TARGET_ABI32
/* enable 64 bit mode if possible */
if (!(env->cpuid_ext2_features & CPUID_EXT2_LM)) {
fprintf(stderr, "The selected x86 CPU does not support 64 bit mode\n");
exit(1);
}
env->cr[4] |= CR4_PAE_MASK;
env->efer |= MSR_EFER_LMA | MSR_EFER_LME;
env->hflags |= HF_LMA_MASK;
#endif
/* flags setup : we activate the IRQs by default as in user mode */
env->eflags |= IF_MASK;
/* linux register setup */
#ifndef TARGET_ABI32
env->regs[R_EAX] = regs->rax;
env->regs[R_EBX] = regs->rbx;
env->regs[R_ECX] = regs->rcx;
env->regs[R_EDX] = regs->rdx;
env->regs[R_ESI] = regs->rsi;
env->regs[R_EDI] = regs->rdi;
env->regs[R_EBP] = regs->rbp;
env->regs[R_ESP] = regs->rsp;
env->eip = regs->rip;
#else
env->regs[R_EAX] = regs->eax;
env->regs[R_EBX] = regs->ebx;
env->regs[R_ECX] = regs->ecx;
env->regs[R_EDX] = regs->edx;
env->regs[R_ESI] = regs->esi;
env->regs[R_EDI] = regs->edi;
env->regs[R_EBP] = regs->ebp;
env->regs[R_ESP] = regs->esp;
env->eip = regs->eip;
#endif
/* linux interrupt setup */
#ifndef TARGET_ABI32
env->idt.limit = 511;
#else
env->idt.limit = 255;
#endif
env->idt.base = target_mmap(0, sizeof(uint64_t) * (env->idt.limit + 1),
PROT_READ|PROT_WRITE,
MAP_ANONYMOUS|MAP_PRIVATE, -1, 0);
idt_table = g2h(env->idt.base);
set_idt(0, 0);
set_idt(1, 0);
set_idt(2, 0);
set_idt(3, 3);
set_idt(4, 3);
set_idt(5, 0);
set_idt(6, 0);
set_idt(7, 0);
set_idt(8, 0);
set_idt(9, 0);
set_idt(10, 0);
set_idt(11, 0);
set_idt(12, 0);
set_idt(13, 0);
set_idt(14, 0);
set_idt(15, 0);
set_idt(16, 0);
set_idt(17, 0);
set_idt(18, 0);
set_idt(19, 0);
set_idt(0x80, 3);
/* linux segment setup */
{
uint64_t *gdt_table;
env->gdt.base = target_mmap(0, sizeof(uint64_t) * TARGET_GDT_ENTRIES,
PROT_READ|PROT_WRITE,
MAP_ANONYMOUS|MAP_PRIVATE, -1, 0);
env->gdt.limit = sizeof(uint64_t) * TARGET_GDT_ENTRIES - 1;
gdt_table = g2h(env->gdt.base);
#ifdef TARGET_ABI32
write_dt(&gdt_table[__USER_CS >> 3], 0, 0xfffff,
DESC_G_MASK | DESC_B_MASK | DESC_P_MASK | DESC_S_MASK |
(3 << DESC_DPL_SHIFT) | (0xa << DESC_TYPE_SHIFT));
#else
/* 64 bit code segment */
write_dt(&gdt_table[__USER_CS >> 3], 0, 0xfffff,
DESC_G_MASK | DESC_B_MASK | DESC_P_MASK | DESC_S_MASK |
DESC_L_MASK |
(3 << DESC_DPL_SHIFT) | (0xa << DESC_TYPE_SHIFT));
#endif
write_dt(&gdt_table[__USER_DS >> 3], 0, 0xfffff,
DESC_G_MASK | DESC_B_MASK | DESC_P_MASK | DESC_S_MASK |
(3 << DESC_DPL_SHIFT) | (0x2 << DESC_TYPE_SHIFT));
}
cpu_x86_load_seg(env, R_CS, __USER_CS);
cpu_x86_load_seg(env, R_SS, __USER_DS);
#ifdef TARGET_ABI32
cpu_x86_load_seg(env, R_DS, __USER_DS);
cpu_x86_load_seg(env, R_ES, __USER_DS);
cpu_x86_load_seg(env, R_FS, __USER_DS);
cpu_x86_load_seg(env, R_GS, __USER_DS);
/* This hack makes Wine work... */
env->segs[R_FS].selector = 0;
#else
cpu_x86_load_seg(env, R_DS, 0);
cpu_x86_load_seg(env, R_ES, 0);
cpu_x86_load_seg(env, R_FS, 0);
cpu_x86_load_seg(env, R_GS, 0);
#endif
#elif defined(TARGET_ARM)
{
int i;
cpsr_write(env, regs->uregs[16], 0xffffffff);
for(i = 0; i < 16; i++) {
env->regs[i] = regs->uregs[i];
}
}
#elif defined(TARGET_SPARC)
{
int i;
env->pc = regs->pc;
env->npc = regs->npc;
env->y = regs->y;
for(i = 0; i < 8; i++)
env->gregs[i] = regs->u_regs[i];
for(i = 0; i < 8; i++)
env->regwptr[i] = regs->u_regs[i + 8];
}
#elif defined(TARGET_PPC)
{
int i;
#if defined(TARGET_PPC64)
#if defined(TARGET_ABI32)
env->msr &= ~((target_ulong)1 << MSR_SF);
#else
env->msr |= (target_ulong)1 << MSR_SF;
#endif
#endif
env->nip = regs->nip;
for(i = 0; i < 32; i++) {
env->gpr[i] = regs->gpr[i];
}
}
#elif defined(TARGET_M68K)
{
env->pc = regs->pc;
env->dregs[0] = regs->d0;
env->dregs[1] = regs->d1;
env->dregs[2] = regs->d2;
env->dregs[3] = regs->d3;
env->dregs[4] = regs->d4;
env->dregs[5] = regs->d5;
env->dregs[6] = regs->d6;
env->dregs[7] = regs->d7;
env->aregs[0] = regs->a0;
env->aregs[1] = regs->a1;
env->aregs[2] = regs->a2;
env->aregs[3] = regs->a3;
env->aregs[4] = regs->a4;
env->aregs[5] = regs->a5;
env->aregs[6] = regs->a6;
env->aregs[7] = regs->usp;
env->sr = regs->sr;
ts->sim_syscalls = 1;
}
#elif defined(TARGET_MICROBLAZE)
{
env->regs[0] = regs->r0;
env->regs[1] = regs->r1;
env->regs[2] = regs->r2;
env->regs[3] = regs->r3;
env->regs[4] = regs->r4;
env->regs[5] = regs->r5;
env->regs[6] = regs->r6;
env->regs[7] = regs->r7;
env->regs[8] = regs->r8;
env->regs[9] = regs->r9;
env->regs[10] = regs->r10;
env->regs[11] = regs->r11;
env->regs[12] = regs->r12;
env->regs[13] = regs->r13;
env->regs[14] = regs->r14;
env->regs[15] = regs->r15;
env->regs[16] = regs->r16;
env->regs[17] = regs->r17;
env->regs[18] = regs->r18;
env->regs[19] = regs->r19;
env->regs[20] = regs->r20;
env->regs[21] = regs->r21;
env->regs[22] = regs->r22;
env->regs[23] = regs->r23;
env->regs[24] = regs->r24;
env->regs[25] = regs->r25;
env->regs[26] = regs->r26;
env->regs[27] = regs->r27;
env->regs[28] = regs->r28;
env->regs[29] = regs->r29;
env->regs[30] = regs->r30;
env->regs[31] = regs->r31;
env->sregs[SR_PC] = regs->pc;
}
#elif defined(TARGET_MIPS)
{
int i;
for(i = 0; i < 32; i++) {
env->active_tc.gpr[i] = regs->regs[i];
}
env->active_tc.PC = regs->cp0_epc;
}
#elif defined(TARGET_SH4)
{
int i;
for(i = 0; i < 16; i++) {
env->gregs[i] = regs->regs[i];
}
env->pc = regs->pc;
}
#elif defined(TARGET_ALPHA)
{
int i;
for(i = 0; i < 28; i++) {
env->ir[i] = ((abi_ulong *)regs)[i];
}
env->ipr[IPR_USP] = regs->usp;
env->ir[30] = regs->usp;
env->pc = regs->pc;
env->unique = regs->unique;
}
#elif defined(TARGET_CRIS)
{
env->regs[0] = regs->r0;
env->regs[1] = regs->r1;
env->regs[2] = regs->r2;
env->regs[3] = regs->r3;
env->regs[4] = regs->r4;
env->regs[5] = regs->r5;
env->regs[6] = regs->r6;
env->regs[7] = regs->r7;
env->regs[8] = regs->r8;
env->regs[9] = regs->r9;
env->regs[10] = regs->r10;
env->regs[11] = regs->r11;
env->regs[12] = regs->r12;
env->regs[13] = regs->r13;
env->regs[14] = info->start_stack;
env->regs[15] = regs->acr;
env->pc = regs->erp;
}
#else
#error unsupported target CPU
#endif
#if defined(TARGET_ARM) || defined(TARGET_M68K)
ts->stack_base = info->start_stack;
ts->heap_base = info->brk;
/* This will be filled in on the first SYS_HEAPINFO call. */
ts->heap_limit = 0;
#endif
if (gdbstub_port) {
gdbserver_start (gdbstub_port);
gdb_handlesig(env, 0);
}
cpu_loop(env);
/* never exits */
return 0;
}