#include <kern/thread.h>
#include <kern/thread_act.h>
#include <mach/ppc/thread_status.h>
-#define __ELF__ 0
#include <ppc/proc_reg.h>
#define C_REDZONE_LEN 224
#define C_LINKAGE_LEN 48
#define TRUNC_DOWN(a,b,c) (((((unsigned)a)-(b))/(c)) * (c))
+/*
+ * The stack layout possibilities (info style); This needs to mach with signal trampoline code
+ *
+ * Traditional: 1
+ * Traditional64: 20
+ * Traditional64with vec: 25
+ * 32bit context 30
+ * 32bit context with vector 35
+ * 64bit context 40
+ * 64bit context with vector 45
+ * Dual context 50
+ * Dual context with vector 55
+ *
+ */
+
+#define UC_TRAD 1
+#define UC_TRAD_VEC 6
+#define UC_TRAD64 20
+#define UC_TRAD64_VEC 25
+#define UC_FLAVOR 30
+#define UC_FLAVOR_VEC 35
+#define UC_FLAVOR64 40
+#define UC_FLAVOR64_VEC 45
+#define UC_DUAL 50
+#define UC_DUAL_VEC 55
+
+ /* The following are valid mcontext sizes */
+#define UC_FLAVOR_SIZE ((PPC_THREAD_STATE_COUNT + PPC_EXCEPTION_STATE_COUNT + PPC_FLOAT_STATE_COUNT) * sizeof(int))
+
+#define UC_FLAVOR_VEC_SIZE ((PPC_THREAD_STATE_COUNT + PPC_EXCEPTION_STATE_COUNT + PPC_FLOAT_STATE_COUNT + PPC_VECTOR_STATE_COUNT) * sizeof(int))
+
+#define UC_FLAVOR64_SIZE ((PPC_THREAD_STATE64_COUNT + PPC_EXCEPTION_STATE64_COUNT + PPC_FLOAT_STATE_COUNT) * sizeof(int))
+
+#define UC_FLAVOR64_VEC_SIZE ((PPC_THREAD_STATE64_COUNT + PPC_EXCEPTION_STATE64_COUNT + PPC_FLOAT_STATE_COUNT + PPC_VECTOR_STATE_COUNT) * sizeof(int))
+
+
/*
* Arrange for this process to run a signal handler
*/
int sig, mask;
u_long code;
{
+ kern_return_t kretn;
struct mcontext mctx, *p_mctx;
+ struct mcontext64 mctx64, *p_mctx64;
struct ucontext uctx, *p_uctx;
siginfo_t sinfo, *p_sinfo;
struct sigacts *ps = p->p_sigacts;
thread_act_t th_act;
struct uthread *ut;
unsigned long paramp,linkp;
- int infostyle = 1;
+ int infostyle = UC_TRAD;
+ int dualcontext =0;
sig_t trampact;
int vec_used = 0;
int stack_size = 0;
int stack_flags = 0;
+ void * tstate;
+ int flavor;
+ int ctx32 = 1;
+ int is_64signalregset(void);
th_act = current_act();
ut = get_bsdthread_info(th_act);
- state_count = PPC_EXCEPTION_STATE_COUNT;
- if (act_machine_get_state(th_act, PPC_EXCEPTION_STATE, &mctx.es, &state_count) != KERN_SUCCESS) {
- goto bad;
- }
+
+ if (p->p_sigacts->ps_siginfo & sigmask(sig)) {
+ infostyle = UC_FLAVOR;
+ }
+ if(is_64signalregset() && (infostyle == UC_FLAVOR)) {
+ dualcontext = 1;
+ infostyle = UC_DUAL;
+ }
+ if (p->p_sigacts->ps_64regset & sigmask(sig)) {
+ dualcontext = 0;
+ ctx32 = 0;
+ infostyle = UC_FLAVOR64;
+ }
+ if (is_64signalregset() && (infostyle == UC_TRAD)) {
+ ctx32=0;
+ infostyle = UC_TRAD64;
+ }
+
+ /* I need this for SIGINFO anyway */
+ flavor = PPC_THREAD_STATE;
+ tstate = (void *)&mctx.ss;
state_count = PPC_THREAD_STATE_COUNT;
- if (act_machine_get_state(th_act, PPC_THREAD_STATE, &mctx.ss, &state_count) != KERN_SUCCESS) {
- goto bad;
- }
- state_count = PPC_FLOAT_STATE_COUNT;
- if (act_machine_get_state(th_act, PPC_FLOAT_STATE, &mctx.fs, &state_count) != KERN_SUCCESS) {
+ if (thread_getstatus(th_act, flavor, (thread_state_t)tstate, &state_count) != KERN_SUCCESS)
goto bad;
- }
- vec_save(th_act);
- if (find_user_vec(th_act)) {
- vec_used = 1;
- state_count = PPC_VECTOR_STATE_COUNT;
- if (act_machine_get_state(th_act, PPC_VECTOR_STATE, &mctx.vs, &state_count) != KERN_SUCCESS) {
- goto bad;
- }
-
+ if ((ctx32 == 0) || dualcontext) {
+ flavor = PPC_THREAD_STATE64;
+ tstate = (void *)&mctx64.ss;
+ state_count = PPC_THREAD_STATE64_COUNT;
+ if (thread_getstatus(th_act, flavor, (thread_state_t)tstate, &state_count) != KERN_SUCCESS)
+ goto bad;
}
+ if ((ctx32 == 1) || dualcontext) {
+ flavor = PPC_EXCEPTION_STATE;
+ tstate = (void *)&mctx.es;
+ state_count = PPC_EXCEPTION_STATE_COUNT;
+ if (thread_getstatus(th_act, flavor, (thread_state_t)tstate, &state_count) != KERN_SUCCESS)
+ goto bad;
+ }
+
+ if ((ctx32 == 0) || dualcontext) {
+ flavor = PPC_EXCEPTION_STATE64;
+ tstate = (void *)&mctx64.es;
+ state_count = PPC_EXCEPTION_STATE64_COUNT;
+
+ if (thread_getstatus(th_act, flavor, (thread_state_t)tstate, &state_count) != KERN_SUCCESS)
+ goto bad;
+
+ }
+
+
+ if ((ctx32 == 1) || dualcontext) {
+ flavor = PPC_FLOAT_STATE;
+ tstate = (void *)&mctx.fs;
+ state_count = PPC_FLOAT_STATE_COUNT;
+ if (thread_getstatus(th_act, flavor, (thread_state_t)tstate, &state_count) != KERN_SUCCESS)
+ goto bad;
+ }
+
+ if ((ctx32 == 0) || dualcontext) {
+ flavor = PPC_FLOAT_STATE;
+ tstate = (void *)&mctx64.fs;
+ state_count = PPC_FLOAT_STATE_COUNT;
+ if (thread_getstatus(th_act, flavor, (thread_state_t)tstate, &state_count) != KERN_SUCCESS)
+ goto bad;
+
+ }
+
+
+ if (find_user_vec_curr()) {
+ vec_used = 1;
+
+ if ((ctx32 == 1) || dualcontext) {
+ flavor = PPC_VECTOR_STATE;
+ tstate = (void *)&mctx.vs;
+ state_count = PPC_VECTOR_STATE_COUNT;
+ if (thread_getstatus(th_act, flavor, (thread_state_t)tstate, &state_count) != KERN_SUCCESS)
+ goto bad;
+ infostyle += 5;
+ }
+
+ if ((ctx32 == 0) || dualcontext) {
+ flavor = PPC_VECTOR_STATE;
+ tstate = (void *)&mctx64.vs;
+ state_count = PPC_VECTOR_STATE_COUNT;
+ if (thread_getstatus(th_act, flavor, (thread_state_t)tstate, &state_count) != KERN_SUCCESS)
+ goto bad;
+ infostyle += 5;
+ }
+ }
+
trampact = ps->ps_trampact[sig];
oonstack = ps->ps_sigstk.ss_flags & SA_ONSTACK;
- if (p->p_sigacts->ps_siginfo & sigmask(sig))
- infostyle = 2;
/* figure out where our new stack lives */
if ((ps->ps_flags & SAS_ALTSTACK) && !oonstack &&
stack_size = ps->ps_sigstk.ss_size;
ps->ps_sigstk.ss_flags |= SA_ONSTACK;
}
- else
- sp = mctx.ss.r1;
+ else {
+ if (ctx32 == 0)
+ sp = (unsigned int)mctx64.ss.r1;
+ else
+ sp = mctx.ss.r1;
+ }
+
+ /* put siginfo on top */
+
/* preserve RED ZONE area */
sp = TRUNC_DOWN(sp, C_REDZONE_LEN, C_STK_ALIGN);
- /* context goes first on stack */
+ /* next are the saved registers */
+ if ((ctx32 == 0) || dualcontext) {
+ sp -= sizeof(*p_mctx64);
+ p_mctx64 = (struct mcontext64 *)sp;
+ }
+ if ((ctx32 == 1) || dualcontext) {
+ sp -= sizeof(*p_mctx);
+ p_mctx = (struct mcontext *)sp;
+ }
+
+ /* context goes first on stack */
sp -= sizeof(*p_uctx);
p_uctx = (struct ucontext *) sp;
sp -= sizeof(*p_sinfo);
p_sinfo = (siginfo_t *) sp;
- /* next are the saved registers */
- sp -= sizeof(*p_mctx);
- p_mctx = (struct mcontext *)sp;
-
/* C calling conventions, create param save and linkage
- * areas
- */
+ * areas
+ */
sp = TRUNC_DOWN(sp, C_PARAMSAVE_LEN, C_STK_ALIGN);
paramp = sp;
uctx.uc_stack.ss_flags |= SS_ONSTACK;
uctx.uc_link = 0;
- uctx.uc_mcsize = (size_t)((PPC_EXCEPTION_STATE_COUNT + PPC_THREAD_STATE_COUNT + PPC_FLOAT_STATE_COUNT) * sizeof(int));
+ if (ctx32 == 0)
+ uctx.uc_mcsize = (size_t)((PPC_EXCEPTION_STATE64_COUNT + PPC_THREAD_STATE64_COUNT + PPC_FLOAT_STATE_COUNT) * sizeof(int));
+ else
+ uctx.uc_mcsize = (size_t)((PPC_EXCEPTION_STATE_COUNT + PPC_THREAD_STATE_COUNT + PPC_FLOAT_STATE_COUNT) * sizeof(int));
+
if (vec_used)
uctx.uc_mcsize += (size_t)(PPC_VECTOR_STATE_COUNT * sizeof(int));
- uctx.uc_mcontext = p_mctx;
+
+ if (ctx32 == 0)
+ uctx.uc_mcontext = (void *)p_mctx64;
+ else
+ uctx.uc_mcontext = (void *)p_mctx;
/* setup siginfo */
bzero((caddr_t)&sinfo, sizeof(siginfo_t));
sinfo.si_signo = sig;
+ sinfo.si_addr = (void *)mctx.ss.srr0;
+ sinfo.pad[0] = (unsigned int)mctx.ss.r1;
+
switch (sig) {
case SIGCHLD:
sinfo.si_pid = p->si_pid;
break;
}
+
/* copy info out to user space */
if (copyout((caddr_t)&uctx, (caddr_t)p_uctx, sizeof(struct ucontext)))
goto bad;
if (copyout((caddr_t)&sinfo, (caddr_t)p_sinfo, sizeof(siginfo_t)))
goto bad;
- if (copyout((caddr_t)&mctx, (caddr_t)p_mctx, uctx.uc_mcsize))
+ if ((ctx32 == 0) || dualcontext) {
+ tstate = &mctx64;
+ if (copyout((caddr_t)tstate, (caddr_t)p_mctx64, uctx.uc_mcsize))
+ goto bad;
+ }
+ if ((ctx32 == 1) || dualcontext) {
+ tstate = &mctx;
+ if (copyout((caddr_t)tstate, (caddr_t)p_mctx, uctx.uc_mcsize))
goto bad;
+ }
+
/* Place our arguments in arg registers: rtm dependent */
mctx.ss.srr1 = get_msr_exportmask(); /* MSR_EXPORT_MASK_SET */
mctx.ss.r1 = sp;
state_count = PPC_THREAD_STATE_COUNT;
- if (act_machine_set_state(th_act, PPC_THREAD_STATE, &mctx.ss, &state_count) != KERN_SUCCESS) {
- goto bad;
+ if ((kretn = thread_setstatus(th_act, PPC_THREAD_STATE, &mctx.ss, &state_count)) != KERN_SUCCESS) {
+ panic("sendsig: thread_setstatus failed, ret = %08X\n", kretn);
}
-
return;
bad:
* psl to gain improper priviledges or to cause
* a machine fault.
*/
+
+#define FOR64_TRANSITION 1
+
+
+#ifdef FOR64_TRANSITION
+
+struct osigreturn_args {
+ struct ucontext *uctx;
+};
+
+/* ARGSUSED */
+int
+osigreturn(p, uap, retval)
+ struct proc *p;
+ struct osigreturn_args *uap;
+ int *retval;
+{
+ struct ucontext uctx;
+ struct ucontext *p_uctx;
+ struct mcontext64 mctx64;
+ struct mcontext64 *p_64mctx;
+ struct mcontext *p_mctx;
+ int error;
+ thread_act_t th_act;
+ struct sigacts *ps = p->p_sigacts;
+ sigset_t mask;
+ register sig_t action;
+ unsigned long state_count;
+ unsigned int state_flavor;
+ struct uthread * ut;
+ int vec_used = 0;
+ void *tsptr, *fptr, *vptr, *mactx;
+ void ppc_checkthreadstate(void *, int);
+
+ th_act = current_act();
+ /* lets use the larger one */
+ mactx = (void *)&mctx64;
+
+ ut = (struct uthread *)get_bsdthread_info(th_act);
+ if (error = copyin(uap->uctx, &uctx, sizeof(struct ucontext))) {
+ return(error);
+ }
+ if (error = copyin(uctx.uc_mcontext, mactx, uctx.uc_mcsize)) {
+ return(error);
+ }
+
+ if (uctx.uc_onstack & 01)
+ p->p_sigacts->ps_sigstk.ss_flags |= SA_ONSTACK;
+ else
+ p->p_sigacts->ps_sigstk.ss_flags &= ~SA_ONSTACK;
+
+ ut->uu_sigmask = uctx.uc_sigmask & ~sigcantmask;
+ if (ut->uu_siglist & ~ut->uu_sigmask)
+ signal_setast(current_act());
+
+ vec_used = 0;
+ switch (uctx.uc_mcsize) {
+ case UC_FLAVOR64_VEC_SIZE :
+ vec_used = 1;
+ case UC_FLAVOR64_SIZE : {
+ p_64mctx = (struct mcontext64 *)mactx;
+ tsptr = (void *)&p_64mctx->ss;
+ fptr = (void *)&p_64mctx->fs;
+ vptr = (void *)&p_64mctx->vs;
+ state_flavor = PPC_THREAD_STATE64;
+ state_count = PPC_THREAD_STATE64_COUNT;
+ }
+ break;
+ case UC_FLAVOR_VEC_SIZE :
+ vec_used = 1;
+ case UC_FLAVOR_SIZE:
+ default: {
+ p_mctx = (struct mcontext *)mactx;
+ tsptr = (void *)&p_mctx->ss;
+ fptr = (void *)&p_mctx->fs;
+ vptr = (void *)&p_mctx->vs;
+ state_flavor = PPC_THREAD_STATE;
+ state_count = PPC_THREAD_STATE_COUNT;
+ }
+ break;
+ } /* switch () */
+
+ /* validate the thread state, set/reset appropriate mode bits in srr1 */
+ (void)ppc_checkthreadstate(tsptr, state_flavor);
+
+ if (thread_setstatus(th_act, state_flavor, tsptr, &state_count) != KERN_SUCCESS) {
+ return(EINVAL);
+ }
+
+ state_count = PPC_FLOAT_STATE_COUNT;
+ if (thread_setstatus(th_act, PPC_FLOAT_STATE, fptr, &state_count) != KERN_SUCCESS) {
+ return(EINVAL);
+ }
+
+ mask = sigmask(SIGFPE);
+ if (((ut->uu_sigmask & mask) == 0) && (p->p_sigcatch & mask) && ((p->p_sigignore & mask) == 0)) {
+ action = ps->ps_sigact[SIGFPE];
+ if((action != SIG_DFL) && (action != SIG_IGN)) {
+ thread_enable_fpe(th_act, 1);
+ }
+ }
+
+ if (vec_used) {
+ state_count = PPC_VECTOR_STATE_COUNT;
+ if (thread_setstatus(th_act, PPC_VECTOR_STATE, vptr, &state_count) != KERN_SUCCESS) {
+ return(EINVAL);
+ }
+ }
+ return (EJUSTRETURN);
+}
+
+#endif /* FOR64_TRANSITION */
+
struct sigreturn_args {
struct ucontext *uctx;
+ int infostyle;
};
/* ARGSUSED */
struct sigreturn_args *uap;
int *retval;
{
- struct ucontext uctx, *p_uctx;
- struct mcontext mctx, *p_mctx;
+ struct ucontext uctx;
+ struct ucontext *p_uctx;
+ char mactx[sizeof(struct mcontext64)];
+ struct mcontext *p_mctx;
+ struct mcontext64 *p_64mctx;
int error;
thread_act_t th_act;
- struct ppc_float_state fs;
- struct ppc_exception_state es;
struct sigacts *ps = p->p_sigacts;
sigset_t mask;
register sig_t action;
unsigned long state_count;
- unsigned int nbits, rbits;
+ unsigned int state_flavor;
struct uthread * ut;
int vec_used = 0;
+ void *tsptr, *fptr, *vptr;
+ int infostyle = uap->infostyle;
+ void ppc_checkthreadstate(void *, int);
th_act = current_act();
if (error = copyin(uap->uctx, &uctx, sizeof(struct ucontext))) {
return(error);
}
- if (error = copyin(uctx.uc_mcontext, &mctx, sizeof(struct mcontext))) {
+
+
+ if (error = copyin(uctx.uc_mcontext, mactx, uctx.uc_mcsize)) {
return(error);
}
p->p_sigacts->ps_sigstk.ss_flags |= SA_ONSTACK;
else
p->p_sigacts->ps_sigstk.ss_flags &= ~SA_ONSTACK;
- ut->uu_sigmask = uctx.uc_sigmask & ~sigcantmask;
-
+ ut->uu_sigmask = uctx.uc_sigmask & ~sigcantmask;
if (ut->uu_siglist & ~ut->uu_sigmask)
signal_setast(current_act());
- nbits = get_msr_nbits();
- rbits = get_msr_rbits();
- /* adjust the critical fields */
- /* make sure naughty bits are off */
- mctx.ss.srr1 &= ~(nbits);
- /* make sure necessary bits are on */
- mctx.ss.srr1 |= (rbits);
+ vec_used = 0;
+ switch (infostyle) {
+ case UC_FLAVOR64_VEC:
+ case UC_TRAD64_VEC:
+ vec_used = 1;
+ case UC_TRAD64:
+ case UC_FLAVOR64: {
+ p_64mctx = (struct mcontext64 *)mactx;
+ tsptr = (void *)&p_64mctx->ss;
+ fptr = (void *)&p_64mctx->fs;
+ vptr = (void *)&p_64mctx->vs;
+ state_flavor = PPC_THREAD_STATE64;
+ state_count = PPC_THREAD_STATE64_COUNT;
+ }
+ break;
+ case UC_FLAVOR_VEC :
+ case UC_TRAD_VEC :
+ vec_used = 1;
+ case UC_FLAVOR :
+ case UC_TRAD :
+ default: {
+ p_mctx = (struct mcontext *)mactx;
+ tsptr = (void *)&p_mctx->ss;
+ fptr = (void *)&p_mctx->fs;
+ vptr = (void *)&p_mctx->vs;
+ state_flavor = PPC_THREAD_STATE;
+ state_count = PPC_THREAD_STATE_COUNT;
+ }
+ break;
+ } /* switch () */
- state_count = (size_t)((PPC_EXCEPTION_STATE_COUNT + PPC_THREAD_STATE_COUNT + PPC_FLOAT_STATE_COUNT) * sizeof(int));
+ /* validate the thread state, set/reset appropriate mode bits in srr1 */
+ (void)ppc_checkthreadstate(tsptr, state_flavor);
- if (uctx.uc_mcsize > state_count)
- vec_used = 1;
-
- state_count = PPC_THREAD_STATE_COUNT;
- if (act_machine_set_state(th_act, PPC_THREAD_STATE, &mctx.ss, &state_count) != KERN_SUCCESS) {
+ if (thread_setstatus(th_act, state_flavor, tsptr, &state_count) != KERN_SUCCESS) {
return(EINVAL);
}
state_count = PPC_FLOAT_STATE_COUNT;
- if (act_machine_set_state(th_act, PPC_FLOAT_STATE, &mctx.fs, &state_count) != KERN_SUCCESS) {
+ if (thread_setstatus(th_act, PPC_FLOAT_STATE, fptr, &state_count) != KERN_SUCCESS) {
return(EINVAL);
}
if (vec_used) {
state_count = PPC_VECTOR_STATE_COUNT;
- if (act_machine_set_state(th_act, PPC_VECTOR_STATE, &mctx.vs, &state_count) != KERN_SUCCESS) {
+ if (thread_setstatus(th_act, PPC_VECTOR_STATE, vptr, &state_count) != KERN_SUCCESS) {
return(EINVAL);
}
}
-
return (EJUSTRETURN);
}
projects / apple / xnu.git / blobdiff