/* Translate Mach exception codes into signal numbers. MIPS version.
-Copyright (C) 1991, 1992, 1994, 1995 Free Software Foundation, Inc.
-This file is part of the GNU C Library.
+ Copyright (C) 1996, 1997 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
-The GNU C Library is free software; you can redistribute it and/or
-modify it under the terms of the GNU Library General Public License as
-published by the Free Software Foundation; either version 2 of the
-License, or (at your option) any later version.
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Library General Public License as
+ published by the Free Software Foundation; either version 2 of the
+ License, or (at your option) any later version.
-The GNU C Library is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
-Library General Public License for more details.
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Library General Public License for more details.
-You should have received a copy of the GNU Library General Public
-License along with the GNU C Library; see the file COPYING.LIB. If
-not, write to the Free Software Foundation, Inc., 675 Mass Ave,
-Cambridge, MA 02139, USA. */
+ You should have received a copy of the GNU Library General Public
+ License along with the GNU C Library; see the file COPYING.LIB. If not,
+ write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ Boston, MA 02111-1307, USA. */
#include <hurd.h>
#include <hurd/signal.h>
into a signal number and signal subcode. */
void
-_hurd_exception2signal (int exception, int code, int subcode,
- int *signo, long int *sigcode, int *error)
+_hurd_exception2signal (struct hurd_signal_detail *detail, int *signo)
{
- *error = 0;
+ detail->error = 0;
- switch (exception)
+ switch (detail->exc)
{
default:
*signo = SIGIOT;
- *sigcode = exception;
+ detail->code = detail->exc;
break;
case EXC_BAD_ACCESS:
- if (code == KERN_PROTECTION_FAILURE)
+ if (detail->exc_code == KERN_PROTECTION_FAILURE)
*signo = SIGSEGV;
else
*signo = SIGBUS;
- *sigcode = subcode;
- *error = code;
+ detail->code = detail->exc_subcode;
+ detail->error = detail->exc_code;
break;
case EXC_BAD_INSTRUCTION:
*signo = SIGILL;
- if (code == EXC_MIPS_II)
- *sigcode = code;
+ if (detail->exc_code == EXC_MIPS_II)
+ detail->code = detail->exc_subcode;
else
- *sigcode = 0;
+ detail->code = 0;
break;
case EXC_ARITHMETIC:
- switch (code)
+ switch (detail->exc_code)
{
case EXC_MIPS_OV: /* integer overflow */
*signo = SIGFPE;
- *sigcode = EXC_MIPS_FLT_OVERFLOW;
+ detail->code = detail->exc_subcode;
break;
default:
*signo = SIGFPE;
- *sigcode = 0;
+ detail->code = 0;
break;
case EXC_MIPS_INT:
/* Subcode is the fp_status word saved by the hardware.
Give an error code corresponding to the first bit set. */
- if (subcode == EXC_MIPS_FLT_UNIMP)
+ if (detail->exc_subcode == EXC_MIPS_FLT_UNIMP)
*signo = SIGILL;
else
*signo = SIGFPE;
- *sigcode = subcode;
+ detail->code = detail->exc_subcode;
break;
}
break;
case EXC_EMULATION:
/* 3.0 doesn't give this one, why, I don't know. */
*signo = SIGEMT;
- *sigcode = 0;
+ detail->code = 0;
break;
case EXC_SOFTWARE:
*signo = SIGEMT;
- *sigcode = 0;
+ detail->code = 0;
break;
case EXC_BREAKPOINT:
*signo = SIGTRAP;
- *sigcode = code;
+ detail->code = 0;
break;
}
}
/* Perform a `longjmp' on a Mach thread_state. MIPS version.
-Copyright (C) 1991, 1994 Free Software Foundation, Inc.
-This file is part of the GNU C Library.
-
-The GNU C Library is free software; you can redistribute it and/or
-modify it under the terms of the GNU Library General Public License as
-published by the Free Software Foundation; either version 2 of the
-License, or (at your option) any later version.
-
-The GNU C Library is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
-Library General Public License for more details.
-
-You should have received a copy of the GNU Library General Public
-License along with the GNU C Library; see the file COPYING.LIB. If
-not, write to the Free Software Foundation, Inc., 675 Mass Ave,
-Cambridge, MA 02139, USA. */
+ Copyright (C) 1996, 1997 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Library General Public License as
+ published by the Free Software Foundation; either version 2 of the
+ License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Library General Public License for more details.
+
+ You should have received a copy of the GNU Library General Public
+ License along with the GNU C Library; see the file COPYING.LIB. If not,
+ write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ Boston, MA 02111-1307, USA. */
#include <hurd/signal.h>
#include <setjmp.h>
-/* Copyright (C) 1991, 1992, 1994, 1995 Free Software Foundation, Inc.
-This file is part of the GNU C Library.
+/* Copyright (C) 1996, 1997 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
-The GNU C Library is free software; you can redistribute it and/or
-modify it under the terms of the GNU Library General Public License as
-published by the Free Software Foundation; either version 2 of the
-License, or (at your option) any later version.
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Library General Public License as
+ published by the Free Software Foundation; either version 2 of the
+ License, or (at your option) any later version.
-The GNU C Library is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
-Library General Public License for more details.
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Library General Public License for more details.
-You should have received a copy of the GNU Library General Public
-License along with the GNU C Library; see the file COPYING.LIB. If
-not, write to the Free Software Foundation, Inc., 675 Mass Ave,
-Cambridge, MA 02139, USA. */
+ You should have received a copy of the GNU Library General Public
+ License along with the GNU C Library; see the file COPYING.LIB. If not,
+ write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ Boston, MA 02111-1307, USA. */
#include <hurd.h>
#include <hurd/signal.h>
#include <hurd/threadvar.h>
#include <stdlib.h>
+#include <mach/mips/mips_instruction.h>
int
__sigreturn (struct sigcontext *scp)
{
struct hurd_sigstate *ss;
+ struct hurd_userlink *link = (void *) &scp[1];
mach_port_t *reply_port;
if (scp == NULL || (scp->sc_mask & _SIG_CANT_MASK))
ss = _hurd_self_sigstate ();
__spin_lock (&ss->lock);
+ /* Remove the link on the `active resources' chain added by
+ _hurd_setup_sighandler. Its purpose was to make sure
+ that we got called; now we have, it is done. */
+ _hurd_userlink_unlink (link);
+
/* Restore the set of blocked signals, and the intr_port slot. */
ss->blocked = scp->sc_mask;
ss->intr_port = scp->sc_intr_port;
the signal thread will notice it if it runs another handler, and
arrange to have us called over again in the new reality. */
ss->context = scp;
- /* Clear the intr_port slot, since we are not in fact doing
- an interruptible RPC right now. If SS->intr_port is not null,
- the SCP context is doing an interruptible RPC, but the signal
- thread will examine us while we are blocked in the sig_post RPC. */
- ss->intr_port = MACH_PORT_NULL;
__spin_unlock (&ss->lock);
- __msg_sig_post (_hurd_msgport, 0, __mach_task_self ());
+ __msg_sig_post (_hurd_msgport, 0, 0, __mach_task_self ());
/* If a pending signal was handled, sig_post never returned. */
__spin_lock (&ss->lock);
+ ss->context = NULL;
}
if (scp->sc_onstack)
reply_port =
(mach_port_t *) __hurd_threadvar_location (_HURD_THREADVAR_MIG_REPLY);
if (*reply_port)
- __mach_port_destroy (__mach_task_self (), *reply_port);
+ {
+ mach_port_t port = *reply_port;
+
+ /* Assigning MACH_PORT_DEAD here tells libc's mig_get_reply_port not to
+ get another reply port, but avoids mig_dealloc_reply_port trying to
+ deallocate it after the receive fails (which it will, because the
+ reply port will be bogus, whether we do this or not). */
+ *reply_port = MACH_PORT_DEAD;
+
+ __mach_port_destroy (__mach_task_self (), port);
+ }
*reply_port = scp->sc_reply_port;
if (scp->sc_coproc_used & SC_COPROC_USE_FPU)
asm volatile ("l.d $f" #n ",%0" : : "m" (scp->sc_fpr[n]))
/* Restore floating-point registers. */
+#ifdef __mips64
restore_fpr (0);
+ restore_fpr (1);
restore_fpr (2);
+ restore_fpr (3);
restore_fpr (4);
+ restore_fpr (5);
restore_fpr (6);
+ restore_fpr (7);
restore_fpr (8);
+ restore_fpr (9);
restore_fpr (10);
+ restore_fpr (11);
restore_fpr (12);
+ restore_fpr (13);
restore_fpr (14);
+ restore_fpr (15);
restore_fpr (16);
+ restore_fpr (17);
restore_fpr (18);
+ restore_fpr (19);
restore_fpr (20);
+ restore_fpr (21);
restore_fpr (22);
+ restore_fpr (23);
restore_fpr (24);
+ restore_fpr (25);
restore_fpr (26);
+ restore_fpr (27);
restore_fpr (28);
+ restore_fpr (29);
restore_fpr (30);
+ restore_fpr (31);
+#else
+ restore_fpr (0);
+ restore_fpr (2);
+ restore_fpr (4);
+ restore_fpr (6);
+ restore_fpr (8);
+ restore_fpr (10);
+ restore_fpr (12);
+ restore_fpr (14);
+ restore_fpr (16);
+ restore_fpr (18);
+ restore_fpr (20);
+ restore_fpr (22);
+ restore_fpr (24);
+ restore_fpr (26);
+ restore_fpr (28);
+ restore_fpr (30);
+#endif
/* Restore the floating-point control/status register ($f31). */
asm volatile ("ctc1 %0,$f31" : : "r" (scp->sc_fpcsr));
}
/* Load all the registers from the sigcontext. */
+#ifdef __mips64
+#define restore_gpr(n) \
+ asm volatile ("ld $" #n ",%0" : : "m" (scpreg->sc_gpr[n - 1]))
+#else
#define restore_gpr(n) \
asm volatile ("lw $" #n ",%0" : : "m" (scpreg->sc_gpr[n - 1]))
+#endif
{
register const struct sigcontext *const scpreg asm ("$1") = scp;
at = &scpreg->sc_pc;
/* This is an emulated instruction that will find at the address in $1
two words: the PC value to restore, and the $1 value to restore. */
- asm volatile (".word op_sigreturn");
-
+ asm volatile (".word %0" : : "i" (op_sigreturn));
asm volatile (".set reorder; .set at;");
+ /* NOTREACHED */
+ return at; /* To prevent optimization. */
}
/* NOTREACHED */
/* Set thread_state for sighandler, and sigcontext to recover. MIPS version.
-Copyright (C) 1994, 1995 Free Software Foundation, Inc.
-This file is part of the GNU C Library.
+ Copyright (C) 1996, 1997 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
-The GNU C Library is free software; you can redistribute it and/or
-modify it under the terms of the GNU Library General Public License as
-published by the Free Software Foundation; either version 2 of the
-License, or (at your option) any later version.
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Library General Public License as
+ published by the Free Software Foundation; either version 2 of the
+ License, or (at your option) any later version.
-The GNU C Library is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
-Library General Public License for more details.
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Library General Public License for more details.
-You should have received a copy of the GNU Library General Public
-License along with the GNU C Library; see the file COPYING.LIB. If
-not, write to the Free Software Foundation, Inc., 675 Mass Ave,
-Cambridge, MA 02139, USA. */
+ You should have received a copy of the GNU Library General Public
+ License along with the GNU C Library; see the file COPYING.LIB. If not,
+ write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ Boston, MA 02111-1307, USA. */
#include <hurd/signal.h>
+#include <hurd/userlink.h>
#include "thread_state.h"
-
-
-struct mach_msg_trap_args
- {
- /* This is the order of arguments to mach_msg_trap. */
- mach_msg_header_t *msg;
- mach_msg_option_t option;
- mach_msg_size_t send_size;
- mach_msg_size_t rcv_size;
- mach_port_t rcv_name;
- mach_msg_timeout_t timeout;
- mach_port_t notify;
- };
+#include <assert.h>
+#include <errno.h>
+#include "hurdfault.h"
+#include "intr-msg.h"
struct sigcontext *
_hurd_setup_sighandler (struct hurd_sigstate *ss, __sighandler_t handler,
- int signo, long int sigcode,
- int rpc_wait,
+ int signo, struct hurd_signal_detail *detail,
+ volatile int rpc_wait,
struct machine_thread_all_state *state)
{
-
- __label__ trampoline, rpc_wait_trampoline;
- void *sigsp;
+ __label__ trampoline, rpc_wait_trampoline, firewall;
+ void *volatile sigsp;
struct sigcontext *scp;
+ struct
+ {
+ int signo;
+ long int sigcode;
+ struct sigcontext *scp; /* Points to ctx, below. */
+ void *sigreturn_addr;
+ void *sigreturn_returns_here;
+ struct sigcontext *return_scp; /* Same; arg to sigreturn. */
+ struct sigcontext ctx;
+ struct hurd_userlink link;
+ } *stackframe;
if (ss->context)
{
/* We have a previous sigcontext that sigreturn was about
to restore when another signal arrived. We will just base
our setup on that. */
- if (! setjmp (_hurd_sigthread_fault_env))
+ if (! _hurdsig_catch_memory_fault (ss->context))
{
memcpy (&state->basic, &ss->context->sc_mips_thread_state,
sizeof (state->basic));
sizeof (state->fpu));
state->set |= (1 << MIPS_FLOAT_STATE);
}
- assert (! rpc_wait);
- /* The intr_port slot was cleared before sigreturn sent us the
- sig_post that made us notice this pending signal, so
- _hurd_internal_post_signal wouldn't do interrupt_operation.
- After we return, our caller will set SCP->sc_intr_port (in the
- new context) from SS->intr_port and clear SS->intr_port. Now
- that we are restoring this old context recorded by sigreturn,
- we want to restore its intr_port too; so store it in
- SS->intr_port now, so it will end up in SCP->sc_intr_port
- later. */
- ss->intr_port = ss->context->sc_intr_port;
}
- /* If the sigreturn context was bogus, just ignore it. */
- ss->context = NULL;
}
- else if (! machine_get_basic_state (ss->thread, state))
+
+ if (! machine_get_basic_state (ss->thread, state))
return NULL;
+ /* Save the original SP in the gratuitous s0 ($16) slot.
+ We may need to reset the SP (the `r29' slot) to avoid clobbering an
+ interrupted RPC frame. */
+ state->basic.r16 = state->basic.r29;
+
if ((ss->actions[signo].sa_flags & SA_ONSTACK) &&
!(ss->sigaltstack.ss_flags & (SA_DISABLE|SA_ONSTACK)))
{
else
sigsp = (char *) state->basic.r29;
- /* Set up the sigcontext structure on the stack. This is all the stack
- needs, since the args are passed in registers (below). */
- sigsp -= sizeof (*scp);
- scp = sigsp;
+ /* Push the arguments to call `trampoline' on the stack. */
+ sigsp -= sizeof (*stackframe);
+ stackframe = sigsp;
- if (! setjmp (_hurd_sigthread_fault_env))
+ if (_hurdsig_catch_memory_fault (stackframe))
{
+ /* We got a fault trying to write the stack frame.
+ We cannot set up the signal handler.
+ Returning NULL tells our caller, who will nuke us with a SIGILL. */
+ return NULL;
+ }
+ else
+ {
+ int ok;
+
+ extern void _hurdsig_longjmp_from_handler (void *, jmp_buf, int);
+
+ /* Add a link to the thread's active-resources list. We mark this as
+ the only user of the "resource", so the cleanup function will be
+ called by any longjmp which is unwinding past the signal frame.
+ The cleanup function (in sigunwind.c) will make sure that all the
+ appropriate cleanups done by sigreturn are taken care of. */
+ stackframe->link.cleanup = &_hurdsig_longjmp_from_handler;
+ stackframe->link.cleanup_data = &stackframe->ctx;
+ stackframe->link.resource.next = NULL;
+ stackframe->link.resource.prevp = NULL;
+ stackframe->link.thread.next = ss->active_resources;
+ stackframe->link.thread.prevp = &ss->active_resources;
+ if (stackframe->link.thread.next)
+ stackframe->link.thread.next->thread.prevp
+ = &stackframe->link.thread.next;
+ ss->active_resources = &stackframe->link;
+
+ /* Set up the arguments for the signal handler. */
+ stackframe->signo = signo;
+ stackframe->sigcode = detail->code;
+ stackframe->scp = stackframe->return_scp = scp = &stackframe->ctx;
+ stackframe->sigreturn_addr = &__sigreturn;
+ stackframe->sigreturn_returns_here = &&firewall; /* Crash on return. */
+
/* Set up the sigcontext from the current state of the thread. */
scp->sc_onstack = ss->sigaltstack.ss_flags & SA_ONSTACK ? 1 : 0;
/* struct sigcontext is laid out so that starting at sc_cause
mimics a struct mips_exc_state. */
- if (! machine_get_state (ss->thread, state, MIPS_EXC_STATE,
- &state->exc, &scp->sc_cause,
- sizeof (state->exc)))
- return NULL;
- if ((scp->sc_coproc_used & SC_COPROC_USE_FPU) &&
- /* struct sigcontext is laid out so that starting at sc_fpr
- mimics a struct mips_float_state. This state
- is only meaningful if the coprocessor was used. */
- ! machine_get_state (ss->thread, state, MIPS_FLOAT_STATE,
- &state->fpu,
- &scp->sc_mips_float_state, sizeof (state->fpu)))
+ ok = machine_get_state (ss->thread, state, MIPS_EXC_STATE,
+ &state->exc, &scp->sc_cause,
+ sizeof (state->exc));
+
+ if (ok && (scp->sc_coproc_used & SC_COPROC_USE_FPU))
+ /* struct sigcontext is laid out so that starting at sc_fpr
+ mimics a struct mips_float_state. This state
+ is only meaningful if the coprocessor was used. */
+ ok = machine_get_state (ss->thread, state, MIPS_FLOAT_STATE,
+ &state->fpu, &scp->sc_mips_float_state,
+ sizeof (state->fpu));
+
+ _hurdsig_end_catch_fault ();
+
+ if (! ok)
return NULL;
}
- else
- /* We got a fault trying to write the stack frame.
- We cannot set up the signal handler.
- Returning NULL tells our caller, who will nuke us with a SIGILL. */
- return NULL;
/* Modify the thread state to call the trampoline code on the new stack. */
if (rpc_wait)
starting with a0 ($4). */
struct mach_msg_trap_args *args = (void *) &state->basic.r4;
+ if (_hurdsig_catch_memory_fault (args))
+ {
+ /* Faulted accessing ARGS. Bomb. */
+ return NULL;
+ }
+
assert (args->option & MACH_RCV_MSG);
/* Disable the message-send, since it has already completed. The
calls we retry need only wait to receive the reply message. */
args->option |= MACH_RCV_TIMEOUT;
args->timeout = _hurd_interrupted_rpc_timeout;
+ _hurdsig_end_catch_fault ();
+
state->basic.pc = (int) &&rpc_wait_trampoline;
- state->basic.r29 = (int) sigsp; /* $29 is the stack pointer register. */
+ /* The reply-receiving trampoline code runs initially on the original
+ user stack. We pass it the signal stack pointer in s4 ($20). */
+ state->basic.r29 = state->basic.r16; /* Restore mach_msg syscall SP. */
+ state->basic.r20 = (int) sigsp;
/* After doing the message receive, the trampoline code will need to
update the v0 ($2) value to be restored by sigreturn. To simplify
the assembly code, we pass the address of its slot in SCP to the
- trampoline code in v1 ($3). */
- state->basic.r3 = (int) &scp->sc_gpr[1];
+ trampoline code in s5 ($21). */
+ state->basic.r21 = (int) &scp->sc_gpr[1];
/* We must preserve the mach_msg_trap args in a0..t2 ($4..$10).
Pass the handler args to the trampoline code in s1..s3 ($17..$19). */
state->basic.r17 = signo;
- state->basic.r18 = sigcode;
+ state->basic.r18 = detail->code;
state->basic.r19 = (int) scp;
}
else
state->basic.pc = (int) &&trampoline;
state->basic.r29 = (int) sigsp;
state->basic.r4 = signo;
- state->basic.r5 = sigcode;
+ state->basic.r5 = detail->code;
state->basic.r6 = (int) scp;
}
- /* We pass the handler function to the trampoline code in at ($1). */
- state->basic.r1 = (int) handler;
+ /* We pass the handler function to the trampoline code in s6 ($22). */
+ state->basic.r22 = (int) handler;
/* In the callee-saved register s0 ($16), we save the SCP value to pass
to __sigreturn after the handler returns. */
state->basic.r16 = (int) scp;
asm volatile
(".set noat; .set noreorder; .set nomacro\n"
/* Retry the interrupted mach_msg system call. */
+#ifdef __mips64
+ "dli $2, -25\n" /* mach_msg_trap */
+#else
"li $2, -25\n" /* mach_msg_trap */
+#endif
"syscall\n"
/* When the sigcontext was saved, v0 was MACH_RCV_INTERRUPTED. But
now the message receive has completed and the original caller of
the RPC (i.e. the code running when the signal arrived) needs to
see the final return value of the message receive in v0. So
store the new v0 value into the sc_gpr[1] member of the sigcontext
- (whose address is in v1 to make this code simpler). */
- "sw $2, ($3)\n"
+ (whose address is in s5 to make this code simpler). */
+#ifdef __mips64
+ "sd $2, ($21)\n"
+#else
+ "sw $2, ($21)\n"
+#endif
/* Since the argument registers needed to have the mach_msg_trap
arguments, we've stored the arguments to the handler function
in registers s1..s3 ($17..$19). */
"move $4, $17\n"
"move $5, $18\n"
- "move $6, $19\n");
+ "move $6, $19\n"
+ /* Switch to the signal stack. */
+ "move $29, $20\n");
trampoline:
/* Entry point for running the handler normally. The arguments to the
a2 SCP
*/
asm volatile
- ("jal $1; nop\n" /* Call the handler function. */
+ ("move $25, $22\n" /* Copy s6 to t9 for MIPS ABI. */
+ "jal $25; nop\n" /* Call the handler function. */
/* Call __sigreturn (SCP); this cannot return. */
- "j %0\n"
+#ifdef __mips64
+ "dla $1,%0\n"
+#else
+ "la $1,%0\n"
+#endif
+ "j $1\n"
"move $4, $16" /* Set up arg from saved SCP in delay slot. */
: : "i" (&__sigreturn));
/* NOTREACHED */
asm volatile (".set reorder; .set at; .set macro");
+ firewall:
+ asm volatile ("hlt: j hlt");
+
return NULL;
}
/* Flush the insn cache after GCC writes a closure on the stack. Mach/MIPS.
-Copyright (C) 1994 Free Software Foundation, Inc.
-This file is part of the GNU C Library.
+ Copyright (C) 1996, 1997 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
-The GNU C Library is free software; you can redistribute it and/or
-modify it under the terms of the GNU Library General Public License as
-published by the Free Software Foundation; either version 2 of the
-License, or (at your option) any later version.
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Library General Public License as
+ published by the Free Software Foundation; either version 2 of the
+ License, or (at your option) any later version.
-The GNU C Library is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
-Library General Public License for more details.
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Library General Public License for more details.
-You should have received a copy of the GNU Library General Public
-License along with the GNU C Library; see the file COPYING.LIB. If
-not, write to the Free Software Foundation, Inc., 675 Mass Ave,
-Cambridge, MA 02139, USA. */
+ You should have received a copy of the GNU Library General Public
+ License along with the GNU C Library; see the file COPYING.LIB. If not,
+ write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ Boston, MA 02111-1307, USA. */
#include <mach.h>
#include <mach/vm_attributes.h>
/* Stupid name, but this is what GCC generates (config/mips/mips.h). */
void
-cacheflush (void *addr, size_t size, int flag)
+cacheflush (void *addr, unsigned size, int flag)
{
vm_machine_attribute_val_t val;
/* Machine-specific definition for spin locks. MIPS version.
-Copyright (C) 1994 Free Software Foundation, Inc.
-This file is part of the GNU C Library.
+ Copyright (C) 1996, 1997 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
-The GNU C Library is free software; you can redistribute it and/or
-modify it under the terms of the GNU Library General Public License as
-published by the Free Software Foundation; either version 2 of the
-License, or (at your option) any later version.
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Library General Public License as
+ published by the Free Software Foundation; either version 2 of the
+ License, or (at your option) any later version.
-The GNU C Library is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
-Library General Public License for more details.
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Library General Public License for more details.
-You should have received a copy of the GNU Library General Public
-License along with the GNU C Library; see the file COPYING.LIB. If
-not, write to the Free Software Foundation, Inc., 675 Mass Ave,
-Cambridge, MA 02139, USA. */
+ You should have received a copy of the GNU Library General Public
+ License along with the GNU C Library; see the file COPYING.LIB. If not,
+ write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ Boston, MA 02111-1307, USA. */
#ifndef _MACHINE_LOCK_H
#define _MACHINE_LOCK_H
+/* To get the TAS pseudo-instruction. */
+#include <mach/mips/mips_instruction.h>
+
/* The type of a spin lock variable. */
typedef __volatile int __spin_lock_t;
_EXTERN_INLINE int
__spin_try_lock (register __spin_lock_t *__lock)
{
- register int __rtn;
+#if (__mips >= 2)
+ int __rtn;
+
__asm__ __volatile (".set noreorder");
-#if 0
- __asm__ __volatile ("lw %0,0(%1)": "=r" (__rtn) : "r" (__lock));
- __asm__ __volatile ("sw %0,0(%0)": : "r" (__lock));
- __asm__ __volatile ("xor %0,%1,%0": "=r" (__rtn) : "r" (__lock));
+#if (__mips64)
+ __asm__ __volatile ("lld %0,0(%1)" : "=r" (__rtn) : "r" (__lock));
#else
- /* Use the Mach microkernel's emulated TAS pseudo-instruction. */
- register int __rtn __asm__ ("a0");
- __asm__ __volatile (".word 0xf ! %0 " : "=r" (__rtn) : "0" (__lock));
+ __asm__ __volatile ("ll %0,0(%1)" : "=r" (__rtn) : "r" (__lock));
+#endif
+ if (__rtn)
+ return 0;
+ __asm__ __volatile ("move %0,%1" : "=r" (__rtn) : "r" (__lock));
+#if (__mips64)
+ __asm__ __volatile ("scd %0,0(%1)" : "=r" (__rtn) : "r" (__lock));
+#else
+ __asm__ __volatile ("sc %0,0(%1)" : "=r" (__rtn) : "r" (__lock));
#endif
__asm__ __volatile (".set reorder");
+ return __rtn;
+#else
+ register int __rtn __asm__ ("a0");
+
+ /* Use the Mach microkernel's emulated TAS pseudo-instruction. */
+ __asm__ __volatile (".set noreorder");
+ __asm__ __volatile (".word %1" : "=r" (__rtn) : "i" (op_tas), "0" (__lock));
+ __asm__ __volatile ("nop");
+ __asm__ __volatile (".set reorder");
return __rtn ^ (int) __lock;
+#endif
}
/* Return nonzero if LOCK is locked. */
/* Machine-specific function to return the stack pointer. MIPS version.
-Copyright (C) 1994 Free Software Foundation, Inc.
-This file is part of the GNU C Library.
-
-The GNU C Library is free software; you can redistribute it and/or
-modify it under the terms of the GNU Library General Public License as
-published by the Free Software Foundation; either version 2 of the
-License, or (at your option) any later version.
-
-The GNU C Library is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
-Library General Public License for more details.
-
-You should have received a copy of the GNU Library General Public
-License along with the GNU C Library; see the file COPYING.LIB. If
-not, write to the Free Software Foundation, Inc., 675 Mass Ave,
-Cambridge, MA 02139, USA. */
+ Copyright (C) 1996, 1997 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Library General Public License as
+ published by the Free Software Foundation; either version 2 of the
+ License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Library General Public License for more details.
+
+ You should have received a copy of the GNU Library General Public
+ License along with the GNU C Library; see the file COPYING.LIB. If not,
+ write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ Boston, MA 02111-1307, USA. */
#ifndef _MACHINE_SP_H
#define _MACHINE_SP_H
-/* Copyright (C) 1994 Free Software Foundation, Inc.
-This file is part of the GNU C Library.
+/* Copyright (C) 1996, 1997 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
-The GNU C Library is free software; you can redistribute it and/or
-modify it under the terms of the GNU Library General Public License as
-published by the Free Software Foundation; either version 2 of the
-License, or (at your option) any later version.
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Library General Public License as
+ published by the Free Software Foundation; either version 2 of the
+ License, or (at your option) any later version.
-The GNU C Library is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
-Library General Public License for more details.
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Library General Public License for more details.
-You should have received a copy of the GNU Library General Public
-License along with the GNU C Library; see the file COPYING.LIB. If
-not, write to the Free Software Foundation, Inc., 675 Mass Ave,
-Cambridge, MA 02139, USA. */
+ You should have received a copy of the GNU Library General Public
+ License along with the GNU C Library; see the file COPYING.LIB. If not,
+ write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ Boston, MA 02111-1307, USA. */
#include <sysdep.h>
+#ifdef PIC
+ .option pic2
+#endif
ENTRY (syscall)
- .frame sp,0,ra
move v0, a0 /* Load system call number from first arg. */
move a0, a1 /* Move the next three args up a register. */
move a1, a2
move a2, a3
/* Load the remaining possible args (up to 11) from the stack. */
- lw t0,16(sp)
- lw t1,20(sp)
- lw t2,24(sp)
- lw t3,28(sp)
- lw t4,32(sp)
- lw t5,36(sp)
- lw t6,40(sp)
+#ifdef __mips64
+ ld t0,4*8(sp)
+ ld t1,5*8(sp)
+ ld t2,6*8(sp)
+ ld t3,7*8(sp)
+ ld t4,8*8(sp)
+ ld t5,9*8(sp)
+ ld t6,10*8(sp)
+#else
+ lw t0,4*4(sp)
+ lw t1,5*4(sp)
+ lw t2,6*4(sp)
+ lw t3,7*4(sp)
+ lw t4,8*4(sp)
+ lw t5,9*4(sp)
+ lw t6,10*4(sp)
+#endif
syscall /* Do the system call. */
j ra /* Return to caller. */
- .end syscall
-/* Copyright (C) 1991, 1992, 1993, 1994 Free Software Foundation, Inc.
-This file is part of the GNU C Library.
+/* Copyright (C) 1996, 1997 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
-The GNU C Library is free software; you can redistribute it and/or
-modify it under the terms of the GNU Library General Public License as
-published by the Free Software Foundation; either version 2 of the
-License, or (at your option) any later version.
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Library General Public License as
+ published by the Free Software Foundation; either version 2 of the
+ License, or (at your option) any later version.
-The GNU C Library is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
-Library General Public License for more details.
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Library General Public License for more details.
-You should have received a copy of the GNU Library General Public
-License along with the GNU C Library; see the file COPYING.LIB. If
-not, write to the Free Software Foundation, Inc., 675 Mass Ave,
-Cambridge, MA 02139, USA. */
+ You should have received a copy of the GNU Library General Public
+ License along with the GNU C Library; see the file COPYING.LIB. If not,
+ write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ Boston, MA 02111-1307, USA. */
-#define MOVE(x,y) move y , x
-
-#if 0
#define LOSE asm volatile ("1: b 1b")
-#endif
+#define START_MACHDEP asm ("\
+ .text\n\
+ .globl _start\n\
+ .ent _start\n\
+_start:\n\
+ # Put initial SP in a0.\n\
+ move $4, $29\n\
+ # Jump to _start0; don't return.\n\
+ j _start0\n\
+ .end _start\n\
+");
+#define START_ARGS int *entry_sp
#define SNARF_ARGS(argc, argv, envp) \
do \
{ \
- int *entry_sp; \
register char **p; \
\
- asm ("addu %0,$30,4" : "=r" (entry_sp)); \
- \
argc = *entry_sp; \
argv = (char **) (entry_sp + 1); \
p = argv; \
({ register int __fn = fn, __sp = (int) sp; \
asm volatile ("move $sp,%0; j %1" : : "r" (__sp), "r" (__fn));})
+#define RETURN_TO(sp, pc, retval) \
+ asm volatile ("move $29, %0; move $2, %2; move $25, %1; jr $25" \
+ : : "r" (sp), "r" (pc), "r" (retval))
+
#define STACK_GROWTH_DOWN
-#ifdef P40
#include <syscall.h>
+#if defined (ASSEMBLER)
+
+#define ALIGN 2
+
+#define MOVE(x,y) move y , x
+
#define SYSCALL(name, args) \
.globl syscall_error; \
kernel_trap(name,SYS_##name,args); \
/* Mach thread state definitions for machine-independent code. MIPS version.
-Copyright (C) 1994 Free Software Foundation, Inc.
-This file is part of the GNU C Library.
+ Copyright (C) 1996, 1997 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
-The GNU C Library is free software; you can redistribute it and/or
-modify it under the terms of the GNU Library General Public License as
-published by the Free Software Foundation; either version 2 of the
-License, or (at your option) any later version.
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Library General Public License as
+ published by the Free Software Foundation; either version 2 of the
+ License, or (at your option) any later version.
-The GNU C Library is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
-Library General Public License for more details.
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Library General Public License for more details.
-You should have received a copy of the GNU Library General Public
-License along with the GNU C Library; see the file COPYING.LIB. If
-not, write to the Free Software Foundation, Inc., 675 Mass Ave,
-Cambridge, MA 02139, USA. */
+ You should have received a copy of the GNU Library General Public
+ License along with the GNU C Library; see the file COPYING.LIB. If not,
+ write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ Boston, MA 02111-1307, USA. */
#define MACHINE_THREAD_STATE_FLAVOR MIPS_THREAD_STATE
#define MACHINE_THREAD_STATE_COUNT MIPS_THREAD_STATE_COUNT
+#ifdef PIC
+#define MACHINE_THREAD_STATE_SET_PC(ts, pc) \
+ ((ts)->PC = (ts)->r25 = (unsigned long int) (pc))
+#endif
+
#define machine_thread_state mips_thread_state
#define PC pc
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