static void
print_execve(const struct syscallname *name,
abi_long arg1, abi_long arg2, abi_long arg3,
abi_long arg4, abi_long arg5, abi_long arg6)
{
abi_ulong arg_ptr_addr;
char *s;
if (!(s = lock_user_string(arg1)))
return;
gemu_log("%s(\"%s\",{", name->name, s);
unlock_user(s, arg1, 0);
for (arg_ptr_addr = arg2; ; arg_ptr_addr += sizeof(abi_ulong)) {
abi_ulong *arg_ptr, arg_addr, s_addr;
arg_ptr = lock_user(VERIFY_READ, arg_ptr_addr, sizeof(abi_ulong), 1);
if (!arg_ptr)
return;
arg_addr = tswapl(*arg_ptr);
unlock_user(arg_ptr, arg_ptr_addr, 0);
if (!arg_addr)
break;
if ((s = lock_user_string(arg_addr))) {
gemu_log("\"%s\",", s);
unlock_user(s, s_addr, 0);
}
}
gemu_log("NULL})");
}
void do_m68k_semihosting(CPUM68KState *env, int nr)
{
uint32_t args;
void *p;
void *q;
uint32_t len;
uint32_t result;
args = env->dregs[1];
switch (nr) {
case HOSTED_EXIT:
gdb_exit(env, env->dregs[0]);
exit(env->dregs[0]);
case HOSTED_OPEN:
if (use_gdb_syscalls()) {
gdb_do_syscall(m68k_semi_cb, "open,%s,%x,%x", ARG(0), (int)ARG(1),
ARG(2), ARG(3));
return;
} else {
if (!(p = lock_user_string(ARG(0)))) {
/* FIXME - check error code? */
result = -1;
} else {
result = open(p, translate_openflags(ARG(2)), ARG(3));
unlock_user(p, ARG(0), 0);
}
}
break;
case HOSTED_CLOSE:
{
/* Ignore attempts to close stdin/out/err. */
int fd = ARG(0);
if (fd > 2) {
if (use_gdb_syscalls()) {
gdb_do_syscall(m68k_semi_cb, "close,%x", ARG(0));
return;
} else {
result = close(fd);
}
} else {
result = 0;
}
break;
}
case HOSTED_READ:
len = ARG(2);
if (use_gdb_syscalls()) {
gdb_do_syscall(m68k_semi_cb, "read,%x,%x,%x",
ARG(0), ARG(1), len);
return;
} else {
if (!(p = lock_user(VERIFY_WRITE, ARG(1), len, 0))) {
/* FIXME - check error code? */
result = -1;
} else {
result = read(ARG(0), p, len);
unlock_user(p, ARG(1), len);
}
}
break;
case HOSTED_WRITE:
len = ARG(2);
if (use_gdb_syscalls()) {
gdb_do_syscall(m68k_semi_cb, "write,%x,%x,%x",
ARG(0), ARG(1), len);
return;
} else {
if (!(p = lock_user(VERIFY_READ, ARG(1), len, 1))) {
/* FIXME - check error code? */
result = -1;
} else {
result = write(ARG(0), p, len);
unlock_user(p, ARG(0), 0);
}
}
break;
case HOSTED_LSEEK:
{
uint64_t off;
off = (uint32_t)ARG(2) | ((uint64_t)ARG(1) << 32);
if (use_gdb_syscalls()) {
m68k_semi_is_fseek = 1;
gdb_do_syscall(m68k_semi_cb, "fseek,%x,%lx,%x",
ARG(0), off, ARG(3));
} else {
off = lseek(ARG(0), off, ARG(3));
/* FIXME - handle put_user() failure */
put_user_u32(off >> 32, args);
put_user_u32(off, args + 4);
put_user_u32(errno, args + 8);
}
return;
}
case HOSTED_RENAME:
if (use_gdb_syscalls()) {
gdb_do_syscall(m68k_semi_cb, "rename,%s,%s",
ARG(0), (int)ARG(1), ARG(2), (int)ARG(3));
return;
} else {
p = lock_user_string(ARG(0));
q = lock_user_string(ARG(2));
if (!p || !q) {
/* FIXME - check error code? */
result = -1;
} else {
result = rename(p, q);
}
unlock_user(p, ARG(0), 0);
unlock_user(q, ARG(2), 0);
}
break;
case HOSTED_UNLINK:
if (use_gdb_syscalls()) {
gdb_do_syscall(m68k_semi_cb, "unlink,%s",
ARG(0), (int)ARG(1));
return;
} else {
if (!(p = lock_user_string(ARG(0)))) {
/* FIXME - check error code? */
result = -1;
} else {
result = unlink(p);
unlock_user(p, ARG(0), 0);
}
}
break;
case HOSTED_STAT:
if (use_gdb_syscalls()) {
gdb_do_syscall(m68k_semi_cb, "stat,%s,%x",
ARG(0), (int)ARG(1), ARG(2));
return;
} else {
struct stat s;
if (!(p = lock_user_string(ARG(0)))) {
/* FIXME - check error code? */
result = -1;
} else {
result = stat(p, &s);
unlock_user(p, ARG(0), 0);
}
if (result == 0) {
translate_stat(env, ARG(2), &s);
}
}
break;
case HOSTED_FSTAT:
if (use_gdb_syscalls()) {
gdb_do_syscall(m68k_semi_cb, "fstat,%x,%x",
ARG(0), ARG(1));
return;
} else {
struct stat s;
result = fstat(ARG(0), &s);
if (result == 0) {
translate_stat(env, ARG(1), &s);
}
}
break;
case HOSTED_GETTIMEOFDAY:
if (use_gdb_syscalls()) {
gdb_do_syscall(m68k_semi_cb, "gettimeofday,%x,%x",
ARG(0), ARG(1));
return;
} else {
qemu_timeval tv;
struct gdb_timeval *p;
result = qemu_gettimeofday(&tv);
if (result != 0) {
if (!(p = lock_user(VERIFY_WRITE,
ARG(0), sizeof(struct gdb_timeval), 0))) {
/* FIXME - check error code? */
result = -1;
} else {
p->tv_sec = cpu_to_be32(tv.tv_sec);
p->tv_usec = cpu_to_be64(tv.tv_usec);
unlock_user(p, ARG(0), sizeof(struct gdb_timeval));
}
}
}
break;
case HOSTED_ISATTY:
if (use_gdb_syscalls()) {
gdb_do_syscall(m68k_semi_cb, "isatty,%x", ARG(0));
return;
} else {
result = isatty(ARG(0));
}
break;
case HOSTED_SYSTEM:
if (use_gdb_syscalls()) {
gdb_do_syscall(m68k_semi_cb, "system,%s",
ARG(0), (int)ARG(1));
return;
} else {
if (!(p = lock_user_string(ARG(0)))) {
/* FIXME - check error code? */
result = -1;
} else {
result = system(p);
unlock_user(p, ARG(0), 0);
}
}
break;
case HOSTED_INIT_SIM:
#if defined(CONFIG_USER_ONLY)
{
TaskState *ts = env->opaque;
/* Allocate the heap using sbrk. */
if (!ts->heap_limit) {
abi_ulong ret;
uint32_t size;
uint32_t base;
base = do_brk(0);
size = SEMIHOSTING_HEAP_SIZE;
/* Try a big heap, and reduce the size if that fails. */
for (;;) {
ret = do_brk(base + size);
if (ret >= (base + size)) {
break;
}
size >>= 1;
}
ts->heap_limit = base + size;
}
/* This call may happen before we have writable memory, so return
values directly in registers. */
env->dregs[1] = ts->heap_limit;
env->aregs[7] = ts->stack_base;
}
#else
/* FIXME: This is wrong for boards where RAM does not start at
address zero. */
env->dregs[1] = ram_size;
env->aregs[7] = ram_size;
#endif
return;
default:
cpu_abort(env, "Unsupported semihosting syscall %d\n", nr);
result = 0;
}
abi_long do_openbsd_syscall(void *cpu_env, int num, abi_long arg1,
abi_long arg2, abi_long arg3, abi_long arg4,
abi_long arg5, abi_long arg6)
{
abi_long ret;
void *p;
#ifdef DEBUG
gemu_log("openbsd syscall %d\n", num);
#endif
if(do_strace)
print_openbsd_syscall(num, arg1, arg2, arg3, arg4, arg5, arg6);
switch(num) {
case TARGET_OPENBSD_NR_exit:
#ifdef TARGET_GPROF
_mcleanup();
#endif
gdb_exit(cpu_env, arg1);
/* XXX: should free thread stack and CPU env */
_exit(arg1);
ret = 0; /* avoid warning */
break;
case TARGET_OPENBSD_NR_read:
if (!(p = lock_user(VERIFY_WRITE, arg2, arg3, 0)))
goto efault;
ret = get_errno(read(arg1, p, arg3));
unlock_user(p, arg2, ret);
break;
case TARGET_OPENBSD_NR_write:
if (!(p = lock_user(VERIFY_READ, arg2, arg3, 1)))
goto efault;
ret = get_errno(write(arg1, p, arg3));
unlock_user(p, arg2, 0);
break;
case TARGET_OPENBSD_NR_open:
if (!(p = lock_user_string(arg1)))
goto efault;
ret = get_errno(open(path(p),
target_to_host_bitmask(arg2, fcntl_flags_tbl),
arg3));
unlock_user(p, arg1, 0);
break;
case TARGET_OPENBSD_NR_mmap:
ret = get_errno(target_mmap(arg1, arg2, arg3,
target_to_host_bitmask(arg4, mmap_flags_tbl),
arg5,
arg6));
break;
case TARGET_OPENBSD_NR_mprotect:
ret = get_errno(target_mprotect(arg1, arg2, arg3));
break;
case TARGET_OPENBSD_NR_syscall:
case TARGET_OPENBSD_NR___syscall:
ret = do_openbsd_syscall(cpu_env,arg1 & 0xffff,arg2,arg3,arg4,arg5,arg6,0);
break;
default:
ret = syscall(num, arg1, arg2, arg3, arg4, arg5, arg6);
break;
}
fail:
#ifdef DEBUG
gemu_log(" = %ld\n", ret);
#endif
if (do_strace)
print_openbsd_syscall_ret(num, ret);
return ret;
efault:
ret = -TARGET_EFAULT;
goto fail;
}
/* do_syscall() should always have a single exit point at the end so
that actions, such as logging of syscall results, can be performed.
All errnos that do_syscall() returns must be -TARGET_<errcode>. */
abi_long do_freebsd_syscall(void *cpu_env, int num, abi_long arg1,
abi_long arg2, abi_long arg3, abi_long arg4,
abi_long arg5, abi_long arg6, abi_long arg7,
abi_long arg8)
{
abi_long ret;
void *p;
#ifdef DEBUG
gemu_log("freebsd syscall %d\n", num);
#endif
if(do_strace)
print_freebsd_syscall(num, arg1, arg2, arg3, arg4, arg5, arg6);
switch(num) {
case TARGET_FREEBSD_NR_exit:
#ifdef TARGET_GPROF
_mcleanup();
#endif
gdb_exit(cpu_env, arg1);
/* XXX: should free thread stack and CPU env */
_exit(arg1);
ret = 0; /* avoid warning */
break;
case TARGET_FREEBSD_NR_read:
if (!(p = lock_user(VERIFY_WRITE, arg2, arg3, 0)))
goto efault;
ret = get_errno(read(arg1, p, arg3));
unlock_user(p, arg2, ret);
break;
case TARGET_FREEBSD_NR_write:
if (!(p = lock_user(VERIFY_READ, arg2, arg3, 1)))
goto efault;
ret = get_errno(write(arg1, p, arg3));
unlock_user(p, arg2, 0);
break;
case TARGET_FREEBSD_NR_writev:
{
int count = arg3;
struct iovec *vec;
vec = alloca(count * sizeof(struct iovec));
if (lock_iovec(VERIFY_READ, vec, arg2, count, 1) < 0)
goto efault;
ret = get_errno(writev(arg1, vec, count));
unlock_iovec(vec, arg2, count, 0);
}
break;
case TARGET_FREEBSD_NR_open:
if (!(p = lock_user_string(arg1)))
goto efault;
ret = get_errno(open(path(p),
target_to_host_bitmask(arg2, fcntl_flags_tbl),
arg3));
unlock_user(p, arg1, 0);
break;
case TARGET_FREEBSD_NR_mmap:
ret = get_errno(target_mmap(arg1, arg2, arg3,
target_to_host_bitmask(arg4, mmap_flags_tbl),
arg5,
arg6));
break;
case TARGET_FREEBSD_NR_mprotect:
ret = get_errno(target_mprotect(arg1, arg2, arg3));
break;
case TARGET_FREEBSD_NR_break:
ret = do_obreak(arg1);
break;
#ifdef __FreeBSD__
case TARGET_FREEBSD_NR___sysctl:
ret = do_freebsd_sysctl(arg1, arg2, arg3, arg4, arg5, arg6);
break;
#endif
case TARGET_FREEBSD_NR_sysarch:
ret = do_freebsd_sysarch(cpu_env, arg1, arg2);
break;
case TARGET_FREEBSD_NR_syscall:
case TARGET_FREEBSD_NR___syscall:
ret = do_freebsd_syscall(cpu_env,arg1 & 0xffff,arg2,arg3,arg4,arg5,arg6,arg7,arg8,0);
break;
default:
ret = get_errno(syscall(num, arg1, arg2, arg3, arg4, arg5, arg6, arg7, arg8));
break;
}
fail:
#ifdef DEBUG
gemu_log(" = %ld\n", ret);
#endif
if (do_strace)
print_freebsd_syscall_ret(num, ret);
return ret;
efault:
ret = -TARGET_EFAULT;
goto fail;
}
uint32_t do_syscall_arm(ProgramBase *prog, uint32_t num, uint32_t arg1,uint32_t
arg2, uint32_t arg3,uint32_t arg4,uint32_t arg5, uint32_t arg6, FILE *syscallTrace)
{
#ifdef DEBUG2
printf ("syscall %d \n", num);
#endif
uint32_t ret;
void *p;
#if defined (CONFIG_ESESC_system) || defined (CONFIG_ESESC_user)
struct timespec startTime;
clock_gettime(CLOCK_REALTIME,&startTime);
#endif
char tmp_str[128];
char pc[32];
char systrace_syscall_num[32];
char emul_syscall_num[32];
int i, j, ret1;
regex_t re1;
regmatch_t match[3];
if (syscallTrace != NULL) {
// Example trace file section
//
//----------
//pc: 0x8174
//syscall: 122
//Linux
//masca1
//3.0.0-1205-omap4
//#10-Ubuntu SMP PREEMPT Thu Sep 29 03:57:24 UTC 2011
//armv7l
//----------
//pc: 0x8230
//syscall: 4
//----------
//printf("Advance to the section \n");
fgets(tmp_str, sizeof tmp_str, syscallTrace);
tmp_str[strlen (tmp_str) - 1] = '\0';
memset(tmp_str, '\0', 128);
// read pc
fgets(pc, sizeof pc, syscallTrace);
pc[strlen (pc) - 1] = '\0';
// read syscall number
fgets(tmp_str, sizeof tmp_str, syscallTrace);
tmp_str[strlen (tmp_str) - 1] = '\0';
//printf("pc %s, syscall %s \n", pc, tmp_str);
ret1 = regcomp(&re1, "syscall: ([0-9]+)", REG_EXTENDED);
ret1 = regexec(&re1, tmp_str, 2, match, 0);
if(!ret1) {
j = 0;
for(i = match[1].rm_so; i < match[1].rm_eo; i++) {
systrace_syscall_num[j] = tmp_str[i];
j++;
}
systrace_syscall_num[j] = '\0';
}else{
I(0);
}
sprintf(emul_syscall_num, "%d", num);
// Sanity check for syscall number
if (strcmp(systrace_syscall_num, emul_syscall_num) != 0) {
printf("Emulator syscall trace and expected syscall trace are out of sync \n");
printf(" syscall num - Expected: %s, Emulator: %s\n", systrace_syscall_num, emul_syscall_num);
I(0);
// exit(0);
}
}
switch(num) {
case TARGET_NR_exit:
exit(arg1);
return 0;
break;
case TARGET_NR_exit_group:
exit(arg1);
return 0;
break;
case TARGET_NR_write:
ret = write(arg1, prog->g2h(arg2), arg3);
return ret;
break;
case TARGET_NR_read:
if (arg3 == 0) {
ret = 0;
}else{
ret = read(arg1, prog->g2h(arg2), arg3);
}
return ret;
break;
/* case TARGET_NR_ioctl:
do_ioctl(prog, arg1, arg2, arg3);
return 0;
break;*/
case TARGET_NR_lseek:
ret = lseek(arg1, arg2, arg3);
return ret;
break;
case TARGET_NR_gettimeofday:
{
// FIXME: Not correct
struct timeval tv;
gettimeofday(&tv, NULL);
}
return 0;
break;
case TARGET_NR_open:
// FIXME: how to check if this is a open(a,b,c) or open(a,b)
ret = open((const char *)prog->g2h(arg1), arg2);
return ret;
break;
case TARGET_NR_close:
ret = close(arg1);
return ret;
break;
case TARGET_NR_mkdir:
p = lock_user_string(prog, arg1);
ret = mkdir((const char *)p, arg2);
return ret;
break;
case TARGET_NR_rmdir:
p = lock_user_string(prog, arg1);
ret = rmdir((const char *)p);
return ret;
break;
case TARGET_NR_rename:
{
void *p2;
p = lock_user_string(prog, arg1);
p2 = lock_user_string(prog, arg2);
if (!p || !p2)
ret = -TARGET_EFAULT;
else
rename((const char *)p, (const char *)p2);
}
return 0;
break;
case TARGET_NR_uname:
// copy 390 bytes from syscalltrace to buf
//Linux
//masca1
//3.0.0-1205-omap4
//#10-Ubuntu SMP PREEMPT Thu Sep 29 03:57:24 UTC 2011
{
struct utsname *uts_buf = (struct utsname *)prog->g2h(arg1);
if (syscallTrace != NULL) {
for (i = 0; i < 5; i++) {
memset(tmp_str, '\0', 65);
fgets(tmp_str, sizeof tmp_str, syscallTrace);
tmp_str[strlen (tmp_str) - 1] = '\0';
if(i == 0)
strcpy(uts_buf->sysname, tmp_str);
else if(i == 1)
strcpy(uts_buf->nodename, tmp_str);
else if(i == 2)
strcpy(uts_buf->release, tmp_str);
else if(i == 3)
strcpy(uts_buf->version, tmp_str);
else if(i == 4)
strcpy(uts_buf->machine, tmp_str);
}
} else {
if (uname(uts_buf) < 0)
return (-1);
}
}
return 0;
break;
case TARGET_NR_brk:
{
if (!arg1) {
return target_brk;
} else if(arg1 < target_original_brk) {
return target_brk;
} else {
if(arg1 < brk_page) {
if(arg1 > target_brk) {
// initialize as it may contain garbage due to a previous heap usage
// (grown then shrunken)
memset(prog->g2h(target_brk), 0, arg1 - target_brk);
}
// deallocate is handled automatically here.
target_brk = arg1;
return target_brk;
}
// Need to allocate memory.
// We can't call local host brk() system call which tends to change the
// simulator program's brk_addr.
// What we need to adjust here is the simulated virtual memory data segment.
// so simulate brk here by calling realloc to reallocate simulator data segment.
uint32_t size_incr = PAGE_ALIGN_UP(arg1 - brk_page);
uint32_t old_size;
uint32_t *data_ptr = NULL;
data_ptr = prog->get_data_buffer(&old_size);
uint8_t *new_data_ptr = (uint8_t *)realloc(data_ptr, (old_size + size_incr));
if (new_data_ptr != NULL) {
prog->set_data_buffer((old_size + size_incr), new_data_ptr);
target_brk = arg1;
brk_page = PAGE_ALIGN_UP(target_brk);
return target_brk;
} else {
return (-1);
}
}
}
return target_brk;;
break;
case TARGET_NR_fstat64:
{
if (syscallTrace == NULL) {
ret = fstat(arg1, (struct stat *)prog->g2h(arg2));
return ret;
} else {
// copy 144 bytes (size of stat structure) from systrace file
// number of lines in the file: total 144 bytes/8 bytes per line = 18 lines
for (i=0; i < 18; i++) {
memset(tmp_str, '\0', 128);
fgets(tmp_str, 128, syscallTrace);
long long int val = strtoull(tmp_str, NULL, 16);
memcpy( (prog->g2h(arg2 + (i * 8) )), &val, 8);
}
}
}
return 0;
break;
case TARGET_NR_mmap2:
{
if (arg1 != 0x00000000) {
// FIXME: This is the non-zero address case.
// The address gives a hint to the kernel about where to map the file.
// We might still do a malloc but need to remember a mapping of the native
// address (i.e arg1) to pointer returned by malloc.
printf("TARGET_NR_mmap2 map address not zero!!! This case is not handled \n");
exit(-1);
}
uint8_t *p = (uint8_t *)malloc(arg2);
if (p == MAP_FAILED)
return -1;
else {
prog->set_mem_mapped_file_endpts((long)p, arg2);
return (long)p;
}
}
return 0;
printf("return address 0x%08x \n", p);
break;
case TARGET_NR_getpid:
getpid();
return 0;
break;
case TARGET_NR_kill:
kill(arg1, target_to_host_signal(arg2));
return 0;
break;
case TARGET_NR_pause:
pause();
return 0;
break;
#ifdef TARGET_NR_shutdown
case TARGET_NR_shutdown:
shutdown(arg1, arg2);
return 0;
break;
#endif
#ifdef TARGET_NR_semget
case TARGET_NR_semget:
semget(arg1, arg2, arg3);
return 0;
break;
#endif
case TARGET_NR_setdomainname:
p = lock_user_string(prog, arg1);
setdomainname((const char *)p, arg2);
return 0;
break;
case TARGET_NR_getsid:
getsid(arg1);
return 0;
break;
#if defined(TARGET_NR_fdatasync)
/* Not on alpha (osf_datasync ?) */
case TARGET_NR_fdatasync:
fdatasync(arg1);
return 0;
break;
#endif
#ifdef TARGET_NR_getuid32
case TARGET_NR_getuid32:
getuid();
return 0;
break;
#endif
case TARGET_NR_ioctl:
printf("ioctl syscall not implemented\n");
return 0;
break;
default:
printf("syscall %d is not implemented\n", num);
exit(-1);
}
}
