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linux-user updates since last pull request

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Merge remote-tracking branch 'remotes/riku/tags/pull-linux-user-20150127' into staging

linux-user updates since last pull request

# gpg: Signature made Tue 27 Jan 2015 20:52:54 GMT using RSA key ID DE3C9BC0
# gpg: Good signature from "Riku Voipio <riku.voipio@iki.fi>"
# gpg:                 aka "Riku Voipio <riku.voipio@linaro.org>"

* remotes/riku/tags/pull-linux-user-20150127:
  linux-user: support target-to-host SCM_CREDENTIALS
  linux-user: Fix broken m68k signal handling on 64 bit hosts
  mips64-linux-user: Fix definition of struct sigaltstack
  linux-user: Fix ioctl cmd type mismatch on 64-bit targets
  linux-user: translate resource also for prlimit64
  linux-user/signal.c: Remove unnecessary wrapper copy_siginfo_to_user
  linux-user/main.c: Mark end_exclusive() as possibly unused
  linux-user/main.c: Call cpu_exec_start/end on all target archs
  linux-user/arm/nwfpe: Delete unused aCC array
  linux-user/alpha: Add define for NR_shmat to enable shmat syscall
  linux-user/signal.c: Remove current_exec_domain_sig()

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Peter Maydell 2015-01-27 22:25:56 +00:00
commit 83761b9244
6 changed files with 61 additions and 75 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
linux-user/alpha/syscall_nr.h
View File

@ -185,6 +185,10 @@
#define TARGET_NR_osf_utsname 207
#define TARGET_NR_lchown 208
#define TARGET_NR_osf_shmat 209
/* this has the usual shmat semantics so give it the name syscall.c expects
* so that our support for it is enabled.
*/
#define TARGET_NR_shmat TARGET_NR_osf_shmat
#define TARGET_NR_shmctl 210
#define TARGET_NR_shmdt 211
#define TARGET_NR_shmget 212

22
linux-user/arm/nwfpe/fpopcode.c
View File

@ -88,25 +88,3 @@ unsigned int getDestinationSize(const unsigned int opcode)
return(nRc);
}
/* condition code lookup table
index into the table is test code: EQ, NE, ... LT, GT, AL, NV
bit position in short is condition code: NZCV */
static const unsigned short aCC[16] = {
0xF0F0, // EQ == Z set
0x0F0F, // NE
0xCCCC, // CS == C set
0x3333, // CC
0xFF00, // MI == N set
0x00FF, // PL
0xAAAA, // VS == V set
0x5555, // VC
0x0C0C, // HI == C set && Z clear
0xF3F3, // LS == C clear || Z set
0xAA55, // GE == (N==V)
0x55AA, // LT == (N!=V)
0x0A05, // GT == (!Z && (N==V))
0xF5FA, // LE == (Z || (N!=V))
0xFFFF, // AL always
0 // NV
};

20
linux-user/main.c
View File

@ -169,7 +169,7 @@ static inline void start_exclusive(void)
}
/* Finish an exclusive operation. */
static inline void end_exclusive(void)
static inline void __attribute__((unused)) end_exclusive(void)
{
pending_cpus = 0;
pthread_cond_broadcast(&exclusive_resume);
@ -283,7 +283,9 @@ void cpu_loop(CPUX86State *env)
target_siginfo_t info;
for(;;) {
cpu_exec_start(cs);
trapnr = cpu_x86_exec(env);
cpu_exec_end(cs);
switch(trapnr) {
case 0x80:
/* linux syscall from int $0x80 */
@ -1288,7 +1290,9 @@ void cpu_loop (CPUSPARCState *env)
target_siginfo_t info;
while (1) {
cpu_exec_start(cs);
trapnr = cpu_sparc_exec (env);
cpu_exec_end(cs);
/* Compute PSR before exposing state. */
if (env->cc_op != CC_OP_FLAGS) {
@ -2656,7 +2660,9 @@ void cpu_loop(CPUOpenRISCState *env)
int trapnr, gdbsig;
for (;;) {
cpu_exec_start(cs);
trapnr = cpu_exec(env);
cpu_exec_end(cs);
gdbsig = 0;
switch (trapnr) {
@ -2744,7 +2750,9 @@ void cpu_loop(CPUSH4State *env)
target_siginfo_t info;
while (1) {
cpu_exec_start(cs);
trapnr = cpu_sh4_exec (env);
cpu_exec_end(cs);
switch (trapnr) {
case 0x160:
@ -2804,7 +2812,9 @@ void cpu_loop(CPUCRISState *env)
target_siginfo_t info;
while (1) {
cpu_exec_start(cs);
trapnr = cpu_cris_exec (env);
cpu_exec_end(cs);
switch (trapnr) {
case 0xaa:
{
@ -2863,7 +2873,9 @@ void cpu_loop(CPUMBState *env)
target_siginfo_t info;
while (1) {
cpu_exec_start(cs);
trapnr = cpu_mb_exec (env);
cpu_exec_end(cs);
switch (trapnr) {
case 0xaa:
{
@ -2966,7 +2978,9 @@ void cpu_loop(CPUM68KState *env)
TaskState *ts = cs->opaque;
for(;;) {
cpu_exec_start(cs);
trapnr = cpu_m68k_exec(env);
cpu_exec_end(cs);
switch(trapnr) {
case EXCP_ILLEGAL:
{
@ -3103,7 +3117,9 @@ void cpu_loop(CPUAlphaState *env)
abi_long sysret;
while (1) {
cpu_exec_start(cs);
trapnr = cpu_alpha_exec (env);
cpu_exec_end(cs);
/* All of the traps imply a transition through PALcode, which
implies an REI instruction has been executed. Which means
@ -3289,7 +3305,9 @@ void cpu_loop(CPUS390XState *env)
target_ulong addr;
while (1) {
cpu_exec_start(cs);
trapnr = cpu_s390x_exec(env);
cpu_exec_end(cs);
switch (trapnr) {
case EXCP_INTERRUPT:
/* Just indicate that signals should be handled asap. */

2
linux-user/mips64/target_signal.h
View File

@ -8,7 +8,7 @@
typedef struct target_sigaltstack {
abi_long ss_sp;
abi_ulong ss_size;
abi_long ss_flags;
abi_int ss_flags;
} target_stack_t;

65
linux-user/signal.c
View File

@ -732,18 +732,6 @@ int do_sigaction(int sig, const struct target_sigaction *act,
return ret;
}
static inline void copy_siginfo_to_user(target_siginfo_t *tinfo,
const target_siginfo_t *info)
{
tswap_siginfo(tinfo, info);
}
static inline int current_exec_domain_sig(int sig)
{
return /* current->exec_domain && current->exec_domain->signal_invmap
&& sig < 32 ? current->exec_domain->signal_invmap[sig] : */ sig;
}
#if defined(TARGET_I386) && TARGET_ABI_BITS == 32
/* from the Linux kernel */
@ -926,8 +914,7 @@ static void setup_frame(int sig, struct target_sigaction *ka,
if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0))
goto give_sigsegv;
__put_user(current_exec_domain_sig(sig),
&frame->sig);
__put_user(sig, &frame->sig);
setup_sigcontext(&frame->sc, &frame->fpstate, env, set->sig[0],
frame_addr + offsetof(struct sigframe, fpstate));
@ -988,12 +975,12 @@ static void setup_rt_frame(int sig, struct target_sigaction *ka,
if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0))
goto give_sigsegv;
__put_user(current_exec_domain_sig(sig), &frame->sig);
__put_user(sig, &frame->sig);
addr = frame_addr + offsetof(struct rt_sigframe, info);
__put_user(addr, &frame->pinfo);
addr = frame_addr + offsetof(struct rt_sigframe, uc);
__put_user(addr, &frame->puc);
copy_siginfo_to_user(&frame->info, info);
tswap_siginfo(&frame->info, info);
/* Create the ucontext. */
__put_user(0, &frame->uc.tuc_flags);
@ -1360,7 +1347,7 @@ static void target_setup_frame(int usig, struct target_sigaction *ka,
env->pc = ka->_sa_handler;
env->xregs[30] = return_addr;
if (info) {
copy_siginfo_to_user(&frame->info, info);
tswap_siginfo(&frame->info, info);
env->xregs[1] = frame_addr + offsetof(struct target_rt_sigframe, info);
env->xregs[2] = frame_addr + offsetof(struct target_rt_sigframe, uc);
}
@ -1777,7 +1764,7 @@ static void setup_rt_frame_v1(int usig, struct target_sigaction *ka,
__put_user(info_addr, &frame->pinfo);
uc_addr = frame_addr + offsetof(struct rt_sigframe_v1, uc);
__put_user(uc_addr, &frame->puc);
copy_siginfo_to_user(&frame->info, info);
tswap_siginfo(&frame->info, info);
/* Clear all the bits of the ucontext we don't use. */
memset(&frame->uc, 0, offsetof(struct target_ucontext_v1, tuc_mcontext));
@ -1815,7 +1802,7 @@ static void setup_rt_frame_v2(int usig, struct target_sigaction *ka,
info_addr = frame_addr + offsetof(struct rt_sigframe_v2, info);
uc_addr = frame_addr + offsetof(struct rt_sigframe_v2, uc);
copy_siginfo_to_user(&frame->info, info);
tswap_siginfo(&frame->info, info);
setup_sigframe_v2(&frame->uc, set, env);
@ -3017,7 +3004,7 @@ static void setup_rt_frame(int sig, struct target_sigaction *ka,
install_sigtramp(frame->rs_code, TARGET_NR_rt_sigreturn);
copy_siginfo_to_user(&frame->rs_info, info);
tswap_siginfo(&frame->rs_info, info);
__put_user(0, &frame->rs_uc.tuc_flags);
__put_user(0, &frame->rs_uc.tuc_link);
@ -3228,14 +3215,11 @@ static void setup_frame(int sig, struct target_sigaction *ka,
abi_ulong frame_addr;
int i;
int err = 0;
int signal;
frame_addr = get_sigframe(ka, regs->gregs[15], sizeof(*frame));
if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0))
goto give_sigsegv;
signal = current_exec_domain_sig(sig);
setup_sigcontext(&frame->sc, regs, set->sig[0]);
for (i = 0; i < TARGET_NSIG_WORDS - 1; i++) {
@ -3259,7 +3243,7 @@ static void setup_frame(int sig, struct target_sigaction *ka,
/* Set up registers for signal handler */
regs->gregs[15] = frame_addr;
regs->gregs[4] = signal; /* Arg for signal handler */
regs->gregs[4] = sig; /* Arg for signal handler */
regs->gregs[5] = 0;
regs->gregs[6] = frame_addr += offsetof(typeof(*frame), sc);
regs->pc = (unsigned long) ka->_sa_handler;
@ -3280,15 +3264,12 @@ static void setup_rt_frame(int sig, struct target_sigaction *ka,
abi_ulong frame_addr;
int i;
int err = 0;
int signal;
frame_addr = get_sigframe(ka, regs->gregs[15], sizeof(*frame));
if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0))
goto give_sigsegv;
signal = current_exec_domain_sig(sig);
copy_siginfo_to_user(&frame->info, info);
tswap_siginfo(&frame->info, info);
/* Create the ucontext. */
__put_user(0, &frame->uc.tuc_flags);
@ -3322,7 +3303,7 @@ static void setup_rt_frame(int sig, struct target_sigaction *ka,
/* Set up registers for signal handler */
regs->gregs[15] = frame_addr;
regs->gregs[4] = signal; /* Arg for signal handler */
regs->gregs[4] = sig; /* Arg for signal handler */
regs->gregs[5] = frame_addr + offsetof(typeof(*frame), info);
regs->gregs[6] = frame_addr + offsetof(typeof(*frame), uc);
regs->pc = (unsigned long) ka->_sa_handler;
@ -3947,7 +3928,7 @@ static void setup_rt_frame(int sig, struct target_sigaction *ka,
__put_user(uc_addr, &frame->puc);
if (ka->sa_flags & SA_SIGINFO) {
copy_siginfo_to_user(&frame->info, info);
tswap_siginfo(&frame->info, info);
}
/*err |= __clear_user(&frame->uc, offsetof(struct ucontext, uc_mcontext));*/
@ -4195,7 +4176,7 @@ static void setup_rt_frame(int sig, struct target_sigaction *ka,
}
qemu_log("%s: 1\n", __FUNCTION__);
copy_siginfo_to_user(&frame->info, info);
tswap_siginfo(&frame->info, info);
/* Create the ucontext. */
__put_user(0, &frame->uc.tuc_flags);
@ -4680,7 +4661,6 @@ static void setup_frame(int sig, struct target_sigaction *ka,
struct target_sigcontext *sc;
target_ulong frame_addr, newsp;
int err = 0;
int signal;
#if defined(TARGET_PPC64)
struct image_info *image = ((TaskState *)thread_cpu->opaque)->info;
#endif
@ -4690,8 +4670,6 @@ static void setup_frame(int sig, struct target_sigaction *ka,
goto sigsegv;
sc = &frame->sctx;
signal = current_exec_domain_sig(sig);
__put_user(ka->_sa_handler, &sc->handler);
__put_user(set->sig[0], &sc->oldmask);
#if TARGET_ABI_BITS == 64
@ -4724,7 +4702,7 @@ static void setup_frame(int sig, struct target_sigaction *ka,
/* Set up registers for signal handler. */
env->gpr[1] = newsp;
env->gpr[3] = signal;
env->gpr[3] = sig;
env->gpr[4] = frame_addr + offsetof(struct target_sigframe, sctx);
#if defined(TARGET_PPC64)
@ -4765,7 +4743,6 @@ static void setup_rt_frame(int sig, struct target_sigaction *ka,
struct target_mcontext *mctx = 0;
target_ulong rt_sf_addr, newsp = 0;
int i, err = 0;
int signal;
#if defined(TARGET_PPC64)
struct image_info *image = ((TaskState *)thread_cpu->opaque)->info;
#endif
@ -4774,9 +4751,7 @@ static void setup_rt_frame(int sig, struct target_sigaction *ka,
if (!lock_user_struct(VERIFY_WRITE, rt_sf, rt_sf_addr, 1))
goto sigsegv;
signal = current_exec_domain_sig(sig);
copy_siginfo_to_user(&rt_sf->info, info);
tswap_siginfo(&rt_sf->info, info);
__put_user(0, &rt_sf->uc.tuc_flags);
__put_user(0, &rt_sf->uc.tuc_link);
@ -4821,7 +4796,7 @@ static void setup_rt_frame(int sig, struct target_sigaction *ka,
/* Set up registers for signal handler. */
env->gpr[1] = newsp;
env->gpr[3] = (target_ulong) signal;
env->gpr[3] = (target_ulong) sig;
env->gpr[4] = (target_ulong) h2g(&rt_sf->info);
env->gpr[5] = (target_ulong) h2g(&rt_sf->uc);
env->gpr[6] = (target_ulong) h2g(rt_sf);
@ -5091,7 +5066,7 @@ static void setup_frame(int sig, struct target_sigaction *ka,
/* moveq #,d0; trap #0 */
__put_user(0x70004e40 + (TARGET_NR_sigreturn << 16),
(long *)(frame->retcode));
(uint32_t *)(frame->retcode));
/* Set up to return from userspace */
@ -5196,7 +5171,7 @@ static void setup_rt_frame(int sig, struct target_sigaction *ka,
uc_addr = frame_addr + offsetof(struct target_rt_sigframe, uc);
__put_user(uc_addr, &frame->puc);
copy_siginfo_to_user(&frame->info, info);
tswap_siginfo(&frame->info, info);
/* Create the ucontext */
@ -5225,8 +5200,8 @@ static void setup_rt_frame(int sig, struct target_sigaction *ka,
/* moveq #,d0; notb d0; trap #0 */
__put_user(0x70004600 + ((TARGET_NR_rt_sigreturn ^ 0xff) << 16),
(long *)(frame->retcode + 0));
__put_user(0x4e40, (short *)(frame->retcode + 4));
(uint32_t *)(frame->retcode + 0));
__put_user(0x4e40, (uint16_t *)(frame->retcode + 4));
if (err)
goto give_sigsegv;
@ -5473,7 +5448,7 @@ static void setup_rt_frame(int sig, struct target_sigaction *ka,
goto give_sigsegv;
}
copy_siginfo_to_user(&frame->info, info);
tswap_siginfo(&frame->info, info);
__put_user(0, &frame->uc.tuc_flags);
__put_user(0, &frame->uc.tuc_link);

23
linux-user/syscall.c
View File

@ -1214,16 +1214,26 @@ static inline abi_long target_to_host_cmsg(struct msghdr *msgh,
cmsg->cmsg_type = tswap32(target_cmsg->cmsg_type);
cmsg->cmsg_len = CMSG_LEN(len);
if (cmsg->cmsg_level != SOL_SOCKET || cmsg->cmsg_type != SCM_RIGHTS) {
gemu_log("Unsupported ancillary data: %d/%d\n", cmsg->cmsg_level, cmsg->cmsg_type);
memcpy(data, target_data, len);
} else {
if (cmsg->cmsg_level == SOL_SOCKET && cmsg->cmsg_type == SCM_RIGHTS) {
int *fd = (int *)data;
int *target_fd = (int *)target_data;
int i, numfds = len / sizeof(int);
for (i = 0; i < numfds; i++)
fd[i] = tswap32(target_fd[i]);
} else if (cmsg->cmsg_level == SOL_SOCKET
&& cmsg->cmsg_type == SCM_CREDENTIALS) {
struct ucred *cred = (struct ucred *)data;
struct target_ucred *target_cred =
(struct target_ucred *)target_data;
__put_user(target_cred->pid, &cred->pid);
__put_user(target_cred->uid, &cred->uid);
__put_user(target_cred->gid, &cred->gid);
} else {
gemu_log("Unsupported ancillary data: %d/%d\n",
cmsg->cmsg_level, cmsg->cmsg_type);
memcpy(data, target_data, len);
}
cmsg = CMSG_NXTHDR(msgh, cmsg);
@ -3278,7 +3288,7 @@ typedef abi_long do_ioctl_fn(const IOCTLEntry *ie, uint8_t *buf_temp,
int fd, abi_long cmd, abi_long arg);
struct IOCTLEntry {
unsigned int target_cmd;
int target_cmd;
unsigned int host_cmd;
const char *name;
int access;
@ -9529,6 +9539,7 @@ abi_long do_syscall(void *cpu_env, int num, abi_long arg1,
/* args: pid, resource number, ptr to new rlimit, ptr to old rlimit */
struct target_rlimit64 *target_rnew, *target_rold;
struct host_rlimit64 rnew, rold, *rnewp = 0;
int resource = target_to_host_resource(arg2);
if (arg3) {
if (!lock_user_struct(VERIFY_READ, target_rnew, arg3, 1)) {
goto efault;
@ -9539,7 +9550,7 @@ abi_long do_syscall(void *cpu_env, int num, abi_long arg1,
rnewp = &rnew;
}
ret = get_errno(sys_prlimit64(arg1, arg2, rnewp, arg4 ? &rold : 0));
ret = get_errno(sys_prlimit64(arg1, resource, rnewp, arg4 ? &rold : 0));
if (!is_error(ret) && arg4) {
if (!lock_user_struct(VERIFY_WRITE, target_rold, arg4, 1)) {
goto efault;