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提交 6d5e216d 编写于 作者: B bellard
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SPARC fixes (Blue Swirl) 


git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@1084 c046a42c-6fe2-441c-8c8c-71466251a162
上级 e8af50a3
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linux-user/signal.c
浏览文件 @ 6d5e216d
......@@ -1271,6 +1271,346 @@ badframe:
return 0;
}
#elif defined(TARGET_SPARC)
#define __SUNOS_MAXWIN 31
/* This is what SunOS does, so shall I. */
struct target_sigcontext {
target_ulong sigc_onstack; /* state to restore */
target_ulong sigc_mask; /* sigmask to restore */
target_ulong sigc_sp; /* stack pointer */
target_ulong sigc_pc; /* program counter */
target_ulong sigc_npc; /* next program counter */
target_ulong sigc_psr; /* for condition codes etc */
target_ulong sigc_g1; /* User uses these two registers */
target_ulong sigc_o0; /* within the trampoline code. */
/* Now comes information regarding the users window set
* at the time of the signal.
*/
target_ulong sigc_oswins; /* outstanding windows */
/* stack ptrs for each regwin buf */
char *sigc_spbuf[__SUNOS_MAXWIN];
/* Windows to restore after signal */
struct {
target_ulong locals[8];
target_ulong ins[8];
} sigc_wbuf[__SUNOS_MAXWIN];
};
/* A Sparc stack frame */
struct sparc_stackf {
target_ulong locals[8];
target_ulong ins[6];
struct sparc_stackf *fp;
target_ulong callers_pc;
char *structptr;
target_ulong xargs[6];
target_ulong xxargs[1];
};
typedef struct {
struct {
target_ulong psr;
target_ulong pc;
target_ulong npc;
target_ulong y;
target_ulong u_regs[16]; /* globals and ins */
} si_regs;
int si_mask;
} __siginfo_t;
typedef struct {
unsigned long si_float_regs [32];
unsigned long si_fsr;
unsigned long si_fpqdepth;
struct {
unsigned long *insn_addr;
unsigned long insn;
} si_fpqueue [16];
} __siginfo_fpu_t;
struct target_signal_frame {
struct sparc_stackf ss;
__siginfo_t info;
__siginfo_fpu_t *fpu_save;
target_ulong insns[2] __attribute__ ((aligned (8)));
target_ulong extramask[TARGET_NSIG_WORDS - 1];
target_ulong extra_size; /* Should be 0 */
__siginfo_fpu_t fpu_state;
};
struct target_rt_signal_frame {
struct sparc_stackf ss;
siginfo_t info;
target_ulong regs[20];
sigset_t mask;
__siginfo_fpu_t *fpu_save;
unsigned int insns[2];
stack_t stack;
unsigned int extra_size; /* Should be 0 */
__siginfo_fpu_t fpu_state;
};
#define UREG_O0 0
#define UREG_O6 6
#define UREG_I0 16
#define UREG_I1 17
#define UREG_I2 18
#define UREG_I6 22
#define UREG_I7 23
#define UREG_FP UREG_I6
#define UREG_SP UREG_O6
static inline void *get_sigframe(struct emulated_sigaction *sa, CPUState *env, unsigned long framesize)
{
unsigned long sp;
sp = env->regwptr[UREG_FP];
#if 0
/* This is the X/Open sanctioned signal stack switching. */
if (sa->sa_flags & TARGET_SA_ONSTACK) {
if (!on_sig_stack(sp) && !((current->sas_ss_sp + current->sas_ss_size) & 7))
sp = current->sas_ss_sp + current->sas_ss_size;
}
#endif
return (void *)(sp - framesize);
}
static int
setup___siginfo(__siginfo_t *si, CPUState *env, target_ulong mask)
{
int err = 0, i;
fprintf(stderr, "2.a %lx psr: %lx regs: %lx\n", si, env->psr, si->si_regs.psr);
err |= __put_user(env->psr, &si->si_regs.psr);
fprintf(stderr, "2.a1 pc:%lx\n", si->si_regs.pc);
err |= __put_user(env->pc, &si->si_regs.pc);
err |= __put_user(env->npc, &si->si_regs.npc);
err |= __put_user(env->y, &si->si_regs.y);
fprintf(stderr, "2.b\n");
for (i=0; i < 7; i++) {
err |= __put_user(env->gregs[i], &si->si_regs.u_regs[i]);
}
for (i=0; i < 7; i++) {
err |= __put_user(env->regwptr[i+16], &si->si_regs.u_regs[i+8]);
}
fprintf(stderr, "2.c\n");
err |= __put_user(mask, &si->si_mask);
return err;
}
static int
setup_sigcontext(struct target_sigcontext *sc, /*struct _fpstate *fpstate,*/
CPUState *env, unsigned long mask)
{
int err = 0;
err |= __put_user(mask, &sc->sigc_mask);
err |= __put_user(env->regwptr[UREG_SP], &sc->sigc_sp);
err |= __put_user(env->pc, &sc->sigc_pc);
err |= __put_user(env->npc, &sc->sigc_npc);
err |= __put_user(env->psr, &sc->sigc_psr);
err |= __put_user(env->gregs[1], &sc->sigc_g1);
err |= __put_user(env->regwptr[UREG_O0], &sc->sigc_o0);
return err;
}
#define NF_ALIGNEDSZ (((sizeof(struct target_signal_frame) + 7) & (~7)))
static void setup_frame(int sig, struct emulated_sigaction *ka,
target_sigset_t *set, CPUState *env)
{
struct target_signal_frame *sf;
int sigframe_size, err, i;
/* 1. Make sure everything is clean */
//synchronize_user_stack();
sigframe_size = NF_ALIGNEDSZ;
sf = (struct target_signal_frame *)
get_sigframe(ka, env, sigframe_size);
#if 0
if (invalid_frame_pointer(sf, sigframe_size))
goto sigill_and_return;
#endif
/* 2. Save the current process state */
err = setup___siginfo(&sf->info, env, set->sig[0]);
err |= __put_user(0, &sf->extra_size);
//err |= save_fpu_state(regs, &sf->fpu_state);
//err |= __put_user(&sf->fpu_state, &sf->fpu_save);
err |= __put_user(set->sig[0], &sf->info.si_mask);
for (i = 0; i < TARGET_NSIG_WORDS - 1; i++) {
err |= __put_user(set->sig[i + 1], &sf->extramask[i]);
}
for (i = 0; i < 7; i++) {
err |= __put_user(env->regwptr[i + 8], &sf->ss.locals[i]);
}
for (i = 0; i < 7; i++) {
err |= __put_user(env->regwptr[i + 16], &sf->ss.ins[i]);
}
//err |= __copy_to_user(sf, (char *) regs->u_regs[UREG_FP],
// sizeof(struct reg_window));
if (err)
goto sigsegv;
/* 3. signal handler back-trampoline and parameters */
env->regwptr[UREG_FP] = (target_ulong) sf;
env->regwptr[UREG_I0] = sig;
env->regwptr[UREG_I1] = (target_ulong) &sf->info;
env->regwptr[UREG_I2] = (target_ulong) &sf->info;
/* 4. signal handler */
env->pc = (unsigned long) ka->sa._sa_handler;
env->npc = (env->pc + 4);
/* 5. return to kernel instructions */
if (ka->sa.sa_restorer)
env->regwptr[UREG_I7] = (unsigned long)ka->sa.sa_restorer;
else {
env->regwptr[UREG_I7] = (unsigned long)(&(sf->insns[0]) - 2);
/* mov __NR_sigreturn, %g1 */
err |= __put_user(0x821020d8, &sf->insns[0]);
/* t 0x10 */
err |= __put_user(0x91d02010, &sf->insns[1]);
if (err)
goto sigsegv;
/* Flush instruction space. */
//flush_sig_insns(current->mm, (unsigned long) &(sf->insns[0]));
//tb_flush(env);
}
return;
sigill_and_return:
force_sig(TARGET_SIGILL);
sigsegv:
force_sig(TARGET_SIGSEGV);
}
static inline int
restore_fpu_state(CPUState *env, __siginfo_fpu_t *fpu)
{
int err;
#if 0
#ifdef CONFIG_SMP
if (current->flags & PF_USEDFPU)
regs->psr &= ~PSR_EF;
#else
if (current == last_task_used_math) {
last_task_used_math = 0;
regs->psr &= ~PSR_EF;
}
#endif
current->used_math = 1;
current->flags &= ~PF_USEDFPU;
#endif
#if 0
if (verify_area (VERIFY_READ, fpu, sizeof(*fpu)))
return -EFAULT;
#endif
err = __copy_from_user(&env->fpr[0], &fpu->si_float_regs[0],
(sizeof(unsigned long) * 32));
err |= __get_user(env->fsr, &fpu->si_fsr);
#if 0
err |= __get_user(current->thread.fpqdepth, &fpu->si_fpqdepth);
if (current->thread.fpqdepth != 0)
err |= __copy_from_user(&current->thread.fpqueue[0],
&fpu->si_fpqueue[0],
((sizeof(unsigned long) +
(sizeof(unsigned long *)))*16));
#endif
return err;
}
static void setup_rt_frame(int sig, struct emulated_sigaction *ka,
target_siginfo_t *info,
target_sigset_t *set, CPUState *env)
{
fprintf(stderr, "setup_rt_frame: not implemented\n");
}
long do_sigreturn(CPUState *env)
{
struct target_signal_frame *sf;
unsigned long up_psr, pc, npc;
target_sigset_t set;
__siginfo_fpu_t *fpu_save;
int err;
sf = (struct new_signal_frame *) env->regwptr[UREG_FP];
fprintf(stderr, "sigreturn sf: %lx\n", &sf);
/* 1. Make sure we are not getting garbage from the user */
#if 0
if (verify_area (VERIFY_READ, sf, sizeof (*sf)))
goto segv_and_exit;
#endif
if (((uint) sf) & 3)
goto segv_and_exit;
err = __get_user(pc, &sf->info.si_regs.pc);
err |= __get_user(npc, &sf->info.si_regs.npc);
fprintf(stderr, "pc: %lx npc %lx\n", pc, npc);
if ((pc | npc) & 3)
goto segv_and_exit;
/* 2. Restore the state */
up_psr = env->psr;
//err |= __copy_from_user(regs, &sf->info.si_regs, sizeof (struct pt_regs)
//);
/* User can only change condition codes and FPU enabling in %psr. */
env->psr = (up_psr & ~(PSR_ICC /* | PSR_EF */))
| (env->psr & (PSR_ICC /* | PSR_EF */));
fprintf(stderr, "psr: %lx\n", env->psr);
err |= __get_user(fpu_save, &sf->fpu_save);
if (fpu_save)
err |= restore_fpu_state(env, fpu_save);
/* This is pretty much atomic, no amount locking would prevent
* the races which exist anyways.
*/
err |= __get_user(set.sig[0], &sf->info.si_mask);
//err |= __copy_from_user(&set.sig[1], &sf->extramask,
// (_NSIG_WORDS-1) * sizeof(unsigned int));
if (err)
goto segv_and_exit;
#if 0
sigdelsetmask(&set, ~_BLOCKABLE);
spin_lock_irq(&current->sigmask_lock);
current->blocked = set;
recalc_sigpending(current);
spin_unlock_irq(&current->sigmask_lock);
#endif
fprintf(stderr, "returning %lx\n", env->regwptr[0]);
return env->regwptr[0];
segv_and_exit:
force_sig(TARGET_SIGSEGV);
}
long do_rt_sigreturn(CPUState *env)
{
fprintf(stderr, "do_rt_sigreturn: not implemented\n");
return -ENOSYS;
}
#else
static void setup_frame(int sig, struct emulated_sigaction *ka,
......
linux-user/syscall_defs.h
浏览文件 @ 6d5e216d
......@@ -294,6 +294,7 @@ int do_sigaction(int sig, const struct target_sigaction *act,
#if defined(TARGET_I386) || defined(TARGET_ARM) || defined(TARGET_SPARC) || defined(TARGET_PPC)
#if !defined(TARGET_SPARC)
#define TARGET_SA_NOCLDSTOP 0x00000001
#define TARGET_SA_NOCLDWAIT 0x00000002 /* not supported yet */
#define TARGET_SA_SIGINFO 0x00000004
......@@ -302,6 +303,57 @@ int do_sigaction(int sig, const struct target_sigaction *act,
#define TARGET_SA_NODEFER 0x40000000
#define TARGET_SA_RESETHAND 0x80000000
#define TARGET_SA_RESTORER 0x04000000
#else /* TARGET_SPARC */
#define TARGET_SA_NOCLDSTOP 8u
#define TARGET_SA_NOCLDWAIT 0x100u
#define TARGET_SA_SIGINFO 0x200u
#define TARGET_SA_ONSTACK 1u
#define TARGET_SA_RESTART 2u
#define TARGET_SA_NODEFER 0x20u
#define TARGET_SA_RESETHAND 4u
#endif
#if defined(TARGET_SPARC)
#define TARGET_SIGHUP 1
#define TARGET_SIGINT 2
#define TARGET_SIGQUIT 3
#define TARGET_SIGILL 4
#define TARGET_SIGTRAP 5
#define TARGET_SIGABRT 6
#define TARGET_SIGIOT 6
#define TARGET_SIGSTKFLT 7 /* actually EMT */
#define TARGET_SIGFPE 8
#define TARGET_SIGKILL 9
#define TARGET_SIGBUS 10
#define TARGET_SIGSEGV 11
#define TARGET_SIGSYS 12
#define TARGET_SIGPIPE 13
#define TARGET_SIGALRM 14
#define TARGET_SIGTERM 15
#define TARGET_SIGURG 16
#define TARGET_SIGSTOP 17
#define TARGET_SIGTSTP 18
#define TARGET_SIGCONT 19
#define TARGET_SIGCHLD 20
#define TARGET_SIGTTIN 21
#define TARGET_SIGTTOU 22
#define TARGET_SIGIO 23
#define TARGET_SIGXCPU 24
#define TARGET_SIGXFSZ 25
#define TARGET_SIGVTALRM 26
#define TARGET_SIGPROF 27
#define TARGET_SIGWINCH 28
#define TARGET_SIGPWR 29
#define TARGET_SIGUSR1 30
#define TARGET_SIGUSR2 31
#define TARGET_SIGRTMIN 32
#define TARGET_SIG_BLOCK 0x01 /* for blocking signals */
#define TARGET_SIG_UNBLOCK 0x02 /* for unblocking signals */
#define TARGET_SIG_SETMASK 0x04 /* for setting the signal mask */
#else
#define TARGET_SIGHUP 1
#define TARGET_SIGINT 2
......@@ -341,6 +393,8 @@ int do_sigaction(int sig, const struct target_sigaction *act,
#define TARGET_SIG_UNBLOCK 1 /* for unblocking signals */
#define TARGET_SIG_SETMASK 2 /* for setting the signal mask */
#endif
struct target_old_sigaction {
target_ulong _sa_handler;
target_ulong sa_mask;
......@@ -359,6 +413,30 @@ typedef union target_sigval {
int sival_int;
target_ulong sival_ptr;
} target_sigval_t;
#if 0
#if defined (TARGET_SPARC)
typedef struct {
struct {
target_ulong psr;
target_ulong pc;
target_ulong npc;
target_ulong y;
target_ulong u_regs[16]; /* globals and ins */
} si_regs;
int si_mask;
} __siginfo_t;
typedef struct {
unsigned long si_float_regs [32];
unsigned long si_fsr;
unsigned long si_fpqdepth;
struct {
unsigned long *insn_addr;
unsigned long insn;
} si_fpqueue [16];
} __siginfo_fpu_t;
#endif
#endif
#define TARGET_SI_MAX_SIZE 128
#define TARGET_SI_PAD_SIZE ((TARGET_SI_MAX_SIZE/sizeof(int)) - 3)
......@@ -954,6 +1032,24 @@ struct target_stat64 {
#define TARGET_O_NOFOLLOW 0100000 /* don't follow links */
#define TARGET_O_LARGEFILE 0200000
#define TARGET_O_DIRECT 0400000 /* direct disk access hint */
#elif defined (TARGET_SPARC)
#define TARGET_O_RDONLY 0x0000
#define TARGET_O_WRONLY 0x0001
#define TARGET_O_RDWR 0x0002
#define TARGET_O_ACCMODE 0x0003
#define TARGET_O_APPEND 0x0008
#define TARGET_FASYNC 0x0040 /* fcntl, for BSD compatibility */
#define TARGET_O_CREAT 0x0200 /* not fcntl */
#define TARGET_O_TRUNC 0x0400 /* not fcntl */
#define TARGET_O_EXCL 0x0800 /* not fcntl */
#define TARGET_O_SYNC 0x2000
#define TARGET_O_NONBLOCK 0x4000
#define TARGET_O_NDELAY (0x0004 | O_NONBLOCK)
#define TARGET_O_NOCTTY 0x8000 /* not fcntl */
#define TARGET_O_DIRECTORY 0x10000 /* must be a directory */
#define TARGET_O_NOFOLLOW 0x20000 /* don't follow links */
#define TARGET_O_LARGEFILE 0x40000
#define TARGET_O_DIRECT 0x100000 /* direct disk access hint */
#else
#define TARGET_O_ACCMODE 0003
#define TARGET_O_RDONLY 00
......
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