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Arm Linux EABI syscall support. 

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@1756 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
pbrook 2006-02-09 16:49:55 +00:00
parent b88a38324b
commit ce4defa062
4 changed files with 170 additions and 32 deletions
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6
linux-user/main.c
View File

@ -360,6 +360,7 @@ void cpu_loop(CPUARMState *env)
case EXCP_SWI:
case EXCP_BKPT:
{
env->eabi = 1;
/* system call */
if (trapnr == EXCP_BKPT) {
if (env->thumb) {
@ -386,13 +387,14 @@ void cpu_loop(CPUARMState *env)
} else if (n == ARM_NR_semihosting
|| n == ARM_NR_thumb_semihosting) {
env->regs[0] = do_arm_semihosting (env);
} else if (n >= ARM_SYSCALL_BASE
} else if (n == 0 || n >= ARM_SYSCALL_BASE
|| (env->thumb && n == ARM_THUMB_SYSCALL)) {
/* linux syscall */
if (env->thumb) {
if (env->thumb || n == 0) {
n = env->regs[7];
} else {
n -= ARM_SYSCALL_BASE;
env->eabi = 0;
}
env->regs[0] = do_syscall(env,
n,

93
linux-user/syscall.c
View File

@ -1651,6 +1651,45 @@ void syscall_init(void)
}
}
static inline uint64_t target_offset64(uint32_t word0, uint32_t word1)
{
#ifdef TARGET_WORDS_BIG_ENDIAN
return ((uint64_t)word0 << 32) | word1;
#else
return ((uint64_t)word1 << 32) | word0;
#endif
}
#ifdef TARGET_NR_truncate64
static inline long target_truncate64(void *cpu_env, const char *arg1,
long arg2, long arg3, long arg4)
{
#ifdef TARGET_ARM
if (((CPUARMState *)cpu_env)->eabi)
{
arg2 = arg3;
arg3 = arg4;
}
#endif
return get_errno(truncate64(arg1, target_offset64(arg2, arg3)));
}
#endif
#ifdef TARGET_NR_ftruncate64
static inline long target_ftruncate64(void *cpu_env, long arg1, long arg2,
long arg3, long arg4)
{
#ifdef TARGET_ARM
if (((CPUARMState *)cpu_env)->eabi)
{
arg2 = arg3;
arg3 = arg4;
}
#endif
return get_errno(ftruncate64(arg1, target_offset64(arg2, arg3)));
}
#endif
long do_syscall(void *cpu_env, int num, long arg1, long arg2, long arg3,
long arg4, long arg5, long arg6)
{
@ -2844,12 +2883,12 @@ long do_syscall(void *cpu_env, int num, long arg1, long arg2, long arg3,
#endif
#ifdef TARGET_NR_truncate64
case TARGET_NR_truncate64:
ret = get_errno(truncate64((const char *)arg1, arg2));
ret = target_truncate64(cpu_env, (const char *)arg1, arg2, arg3, arg4);
break;
#endif
#ifdef TARGET_NR_ftruncate64
case TARGET_NR_ftruncate64:
ret = get_errno(ftruncate64(arg1, arg2));
ret = target_ftruncate64(cpu_env, arg1, arg2, arg3, arg4);
break;
#endif
#ifdef TARGET_NR_stat64
@ -2868,6 +2907,30 @@ long do_syscall(void *cpu_env, int num, long arg1, long arg2, long arg3,
ret = get_errno(fstat(arg1, &st));
do_stat64:
if (!is_error(ret)) {
#ifdef TARGET_ARM
if (((CPUARMState *)cpu_env)->eabi) {
struct target_eabi_stat64 *target_st = (void *)arg2;
memset(target_st, 0, sizeof(struct target_eabi_stat64));
put_user(st.st_dev, &target_st->st_dev);
put_user(st.st_ino, &target_st->st_ino);
#ifdef TARGET_STAT64_HAS_BROKEN_ST_INO
put_user(st.st_ino, &target_st->__st_ino);
#endif
put_user(st.st_mode, &target_st->st_mode);
put_user(st.st_nlink, &target_st->st_nlink);
put_user(st.st_uid, &target_st->st_uid);
put_user(st.st_gid, &target_st->st_gid);
put_user(st.st_rdev, &target_st->st_rdev);
/* XXX: better use of kernel struct */
put_user(st.st_size, &target_st->st_size);
put_user(st.st_blksize, &target_st->st_blksize);
put_user(st.st_blocks, &target_st->st_blocks);
put_user(st.st_atime, &target_st->target_st_atime);
put_user(st.st_mtime, &target_st->target_st_mtime);
put_user(st.st_ctime, &target_st->target_st_ctime);
} else
#endif
{
struct target_stat64 *target_st = (void *)arg2;
memset(target_st, 0, sizeof(struct target_stat64));
put_user(st.st_dev, &target_st->st_dev);
@ -2889,6 +2952,7 @@ long do_syscall(void *cpu_env, int num, long arg1, long arg2, long arg3,
put_user(st.st_ctime, &target_st->target_st_ctime);
}
}
}
break;
#endif
#ifdef USE_UID16
@ -3150,26 +3214,51 @@ long do_syscall(void *cpu_env, int num, long arg1, long arg2, long arg3,
{
struct flock64 fl;
struct target_flock64 *target_fl = (void *)arg3;
#ifdef TARGET_ARM
struct target_eabi_flock64 *target_efl = (void *)arg3;
#endif
switch(arg2) {
case F_GETLK64:
ret = get_errno(fcntl(arg1, arg2, &fl));
if (ret == 0) {
#ifdef TARGET_ARM
if (((CPUARMState *)cpu_env)->eabi) {
target_efl->l_type = tswap16(fl.l_type);
target_efl->l_whence = tswap16(fl.l_whence);
target_efl->l_start = tswap64(fl.l_start);
target_efl->l_len = tswap64(fl.l_len);
target_efl->l_pid = tswapl(fl.l_pid);
} else
#endif
{
target_fl->l_type = tswap16(fl.l_type);
target_fl->l_whence = tswap16(fl.l_whence);
target_fl->l_start = tswap64(fl.l_start);
target_fl->l_len = tswap64(fl.l_len);
target_fl->l_pid = tswapl(fl.l_pid);
}
}
break;
case F_SETLK64:
case F_SETLKW64:
#ifdef TARGET_ARM
if (((CPUARMState *)cpu_env)->eabi) {
fl.l_type = tswap16(target_efl->l_type);
fl.l_whence = tswap16(target_efl->l_whence);
fl.l_start = tswap64(target_efl->l_start);
fl.l_len = tswap64(target_efl->l_len);
fl.l_pid = tswapl(target_efl->l_pid);
} else
#endif
{
fl.l_type = tswap16(target_fl->l_type);
fl.l_whence = tswap16(target_fl->l_whence);
fl.l_start = tswap64(target_fl->l_start);
fl.l_len = tswap64(target_fl->l_len);
fl.l_pid = tswapl(target_fl->l_pid);
}
ret = get_errno(fcntl(arg1, arg2, &fl));
break;
default:

44
linux-user/syscall_defs.h
View File

@ -924,6 +924,38 @@ struct target_stat64 {
unsigned long long st_ino;
} __attribute__((packed));
#ifdef TARGET_ARM
struct target_eabi_stat64 {
unsigned long long st_dev;
unsigned int __pad1;
unsigned long __st_ino;
unsigned int st_mode;
unsigned int st_nlink;
unsigned long st_uid;
unsigned long st_gid;
unsigned long long st_rdev;
unsigned int __pad2[2];
long long st_size;
unsigned long st_blksize;
unsigned int __pad3;
unsigned long long st_blocks;
unsigned long target_st_atime;
unsigned long target_st_atime_nsec;
unsigned long target_st_mtime;
unsigned long target_st_mtime_nsec;
unsigned long target_st_ctime;
unsigned long target_st_ctime_nsec;
unsigned long long st_ino;
} __attribute__ ((packed));
#endif
#elif defined(TARGET_SPARC)
struct target_stat {
@ -1298,8 +1330,18 @@ struct target_flock64 {
unsigned long long l_start;
unsigned long long l_len;
int l_pid;
};
}__attribute__((packed));
#ifdef TARGET_ARM
struct target_eabi_flock64 {
short l_type;
short l_whence;
int __pad;
unsigned long long l_start;
unsigned long long l_len;
int l_pid;
}__attribute__((packed));
#endif
/* soundcard defines */
/* XXX: convert them all to arch indepedent entries */

5
target-arm/cpu.h
View File

@ -110,6 +110,11 @@ typedef struct CPUARMState {
float_status fp_status;
} vfp;
#if defined(CONFIG_USER_ONLY)
/* For usermode syscall translation. */
int eabi;
#endif
CPU_COMMON
} CPUARMState;