--- /dev/null
+/* Machine-specific definition for spin locks. Alpha 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. */
+
+#ifndef _MACHINE_LOCK_H
+#define _MACHINE_LOCK_H
+
+/* The type of a spin lock variable. */
+
+typedef __volatile long int __spin_lock_t;
+
+/* Value to initialize `__spin_lock_t' variables to. */
+
+#define __SPIN_LOCK_INITIALIZER 0L
+
+
+#ifndef _EXTERN_INLINE
+#define _EXTERN_INLINE extern __inline
+#endif
+
+/* Unlock LOCK. */
+
+_EXTERN_INLINE void
+__spin_unlock (__spin_lock_t *__lock)
+{
+ __asm__ __volatile__ (".set noreorder\n"
+ "mb; stq $31, %0; mb\n"
+ ".set reorder"
+ : "=m" (__lock));
+}
+
+/* Try to lock LOCK; return nonzero if we locked it, zero if another has. */
+
+_EXTERN_INLINE int
+__spin_try_lock (register __spin_lock_t *__lock)
+{
+ register long int __rtn, __tmp;
+
+ do
+ {
+ __asm__ __volatile__ (".set noreorder\n"
+ /* %0 is TMP, %1 is RTN, %2 is LOCK. */
+ "mb; ldq_l %0,%2\n" /* Load lock into TMP. */
+ "or $31,2,%1\n" /* Locked value in RTN. */
+ ".set reorder"
+ : "=r" (__tmp), "=r" (__rtn) : "m" (__lock));
+ if (__tmp)
+ /* The lock is already taken. */
+ return 0;
+
+ /* The lock is not taken; try to get it now. */
+ __asm__ __volatile__ ("stq_c %0,%1" : "+r" (__rtn), "+m" (__lock));
+ /* RTN is clear if stq_c was interrupted; loop to try the lock again. */
+ } while (! __rtn);
+ /* RTN is now nonzero; we have the lock. */
+ return __rtn;
+}
+
+/* Return nonzero if LOCK is locked. */
+
+_EXTERN_INLINE int
+__spin_lock_locked (__spin_lock_t *__lock)
+{
+ return *__lock != 0;
+}
+
+
+#endif /* machine-lock.h */
-/* Copyright (C) 1991, 1992, 1993, 1994 Free Software Foundation, Inc.
+/* 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
#define LOSE asm volatile ("call_pal 0") /* halt */
-/* XXX SNARF_ARGS */
+#define START_MACHDEP \
+ asm ("_start: mov $30, $16\n" /* Put initial SP in a0. */
+ " br $27, 1f\n" /* Load GP from PC. */
+ "1: ldgp $29, 0($27)\n"
+ " jmp $26, _start0"); /* Jump to _start0; don't return. */
+#define START_ARGS char **sp
+#define SNARF_ARGS(argc, argv, envp) \
+ (envp = &(argv = &sp[1])[(argc = *(int *) sp) + 1])
#define CALL_WITH_SP(fn, sp) \
({ register long int __fn = fn, __sp = (long int) sp; \
--- /dev/null
+/* Translate Mach exception codes into signal numbers. Alpha 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. */
+
+#include <hurd.h>
+#include <hurd/signal.h>
+#include <mach/exception.h>
+
+/* Translate the Mach exception codes, as received in an `exception_raise' RPC,
+ into a signal number and signal subcode. */
+
+void
+_hurd_exception2signal (int exception, int code, int subcode,
+ int *signo, int *sigcode, int *error)
+{
+ *error = 0;
+
+ switch (exception)
+ {
+ default:
+ *signo = SIGIOT;
+ *sigcode = exception;
+ break;
+
+ case EXC_BAD_ACCESS:
+ if (code == KERN_PROTECTION_FAILURE)
+ *signo = SIGSEGV;
+ else
+ *signo = SIGBUS;
+ *sigcode = subcode;
+ *error = code;
+ break;
+
+ case EXC_BAD_INSTRUCTION:
+ *signo = SIGILL;
+ *sigcode = code;
+ break;
+
+ case EXC_ARITHMETIC:
+ *signo = SIGFPE;
+ *sigcode = code;
+ break;
+ break;
+
+ case EXC_EMULATION:
+ /* 3.0 doesn't give this one, why, I don't know. */
+ *signo = SIGEMT;
+ *sigcode = code;
+ break;
+
+ case EXC_SOFTWARE:
+ *signo = SIGEMT;
+ *sigcode = code;
+ break;
+
+ case EXC_BREAKPOINT:
+ *signo = SIGTRAP;
+ *sigcode = code;
+ break;
+ }
+}
{
/* These first members are machine-independent. */
- int sc_onstack; /* Nonzero if running on sigstack. */
+ long int sc_onstack; /* Nonzero if running on sigstack. */
sigset_t sc_mask; /* Blocked signals to restore. */
/* MiG reply port this thread is using. */
- unsigned int sc_reply_port;
+ unsigned long int sc_reply_port;
/* Port this thread is doing an interruptible RPC on. */
- unsigned int sc_intr_port;
+ unsigned long int sc_intr_port;
/* Error code associated with this signal (interpreted as `error_t'). */
int sc_error;
structure is written to be laid out identically to:
{
struct alpha_thread_state basic;
+ struct alpha_exc_state exc;
struct alpha_float_state fpu;
}
trampoline.c knows this, so it must be changed if this changes. */
-#define sc_alpha_thread_state sc_gs /* Beginning of correspondence. */
+#define sc_alpha_thread_state sc_regs /* Beginning of correspondence. */
long int sc_regs[31]; /* General registers $0..$30. */
long int sc_pc; /* Program counter. */
- long int sc_ps; /* Processor status. */
- /* struct alpha_float_state */
+ /* struct mips_exc_state */
+#define sc_alpha_exc_state sc_badvaddr
+ unsigned long int sc_badvaddr;
+ unsigned int sc_cause; /* Machine-level trap code. */
+#define SC_CAUSE_SET_SSTEP 1
+ int sc_used_fpa; /* Nonzero if FPU was used. */
+
+ /* struct alpha_float_state
+ This is only filled in if sc_used_fpa is nonzero. */
#define sc_alpha_float_state sc_fpregs
- long int sc_fpregs[32]; /* Floating point registers $f0..$f31. */
+ double sc_fpregs[31]; /* Floating point registers $f0..$f30. */
+ long int sc_fpcsr; /* Floating point control/status register. */
};
projects / thirdparty / glibc.git / commitdiff
