From 28f540f45bbacd939bfd07f213bcad2bf730b1bf Mon Sep 17 00:00:00 2001 From: Roland McGrath Date: Sat, 18 Feb 1995 01:27:10 +0000 Subject: initial import --- sysdeps/mach/mips/Dist | 1 + sysdeps/mach/mips/Makefile | 3 ++ sysdeps/mach/mips/cacheflush.c | 44 ++++++++++++++++++++++++ sysdeps/mach/mips/machine-lock.h | 73 ++++++++++++++++++++++++++++++++++++++++ sysdeps/mach/mips/machine-sp.h | 38 +++++++++++++++++++++ sysdeps/mach/mips/syscall.S | 37 ++++++++++++++++++++ sysdeps/mach/mips/sysdep.h | 69 +++++++++++++++++++++++++++++++++++++ sysdeps/mach/mips/thread_state.h | 37 ++++++++++++++++++++ 8 files changed, 302 insertions(+) create mode 100644 sysdeps/mach/mips/Dist create mode 100644 sysdeps/mach/mips/Makefile create mode 100644 sysdeps/mach/mips/cacheflush.c create mode 100644 sysdeps/mach/mips/machine-lock.h create mode 100644 sysdeps/mach/mips/machine-sp.h create mode 100644 sysdeps/mach/mips/syscall.S create mode 100644 sysdeps/mach/mips/sysdep.h create mode 100644 sysdeps/mach/mips/thread_state.h (limited to 'sysdeps/mach/mips') diff --git a/sysdeps/mach/mips/Dist b/sysdeps/mach/mips/Dist new file mode 100644 index 0000000000..f2699bf887 --- /dev/null +++ b/sysdeps/mach/mips/Dist @@ -0,0 +1 @@ +cacheflush.c diff --git a/sysdeps/mach/mips/Makefile b/sysdeps/mach/mips/Makefile new file mode 100644 index 0000000000..a890ae7b46 --- /dev/null +++ b/sysdeps/mach/mips/Makefile @@ -0,0 +1,3 @@ +ifeq ($(subdir),gnulib) +sysdep_routines += cacheflush +endif diff --git a/sysdeps/mach/mips/cacheflush.c b/sysdeps/mach/mips/cacheflush.c new file mode 100644 index 0000000000..5325e6fd1e --- /dev/null +++ b/sysdeps/mach/mips/cacheflush.c @@ -0,0 +1,44 @@ +/* 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. + +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 +#include + +/* Stupid name, but this is what GCC generates (config/mips/mips.h). */ +void +cacheflush (void *addr, size_t size, int flag) +{ + vm_machine_attribute_val_t val; + + switch (flag) + { + case 0: /* ? */ + val = MATTR_VAL_DCACHE_FLUSH; + case 1: /* This is the only value GCC uses. */ + val = MATTR_VAL_ICACHE_FLUSH; + break; + default: + val = MATTR_VAL_CACHE_FLUSH; + } + + __vm_machine_attribute (__mach_task_self (), + (vm_address_t) addr, size, + MATTR_CACHE, + &val); +} diff --git a/sysdeps/mach/mips/machine-lock.h b/sysdeps/mach/mips/machine-lock.h new file mode 100644 index 0000000000..628aae41bb --- /dev/null +++ b/sysdeps/mach/mips/machine-lock.h @@ -0,0 +1,73 @@ +/* Machine-specific definition for spin locks. 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. */ + +#ifndef _MACHINE_LOCK_H +#define _MACHINE_LOCK_H + +/* The type of a spin lock variable. */ + +typedef __volatile int __spin_lock_t; + +/* Value to initialize `__spin_lock_t' variables to. */ + +#define __SPIN_LOCK_INITIALIZER 0 + + +#ifndef _EXTERN_INLINE +#define _EXTERN_INLINE extern __inline +#endif + +/* Unlock LOCK. */ + +_EXTERN_INLINE void +__spin_unlock (__spin_lock_t *__lock) +{ + *__lock = 0; +} + +/* 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 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)); +#else + /* Use the Mach microkernel's emulated TAS pseudo-instruction. */ + register int __rtn __asm__ ("a0"); + __asm__ __volatile (".word 0xf ! %0 " : "=r" (__rtn) : "0" (__lock)); +#endif + __asm__ __volatile (".set reorder"); + return __rtn ^ (int) __lock; +} + +/* Return nonzero if LOCK is locked. */ + +_EXTERN_INLINE int +__spin_lock_locked (__spin_lock_t *__lock) +{ + return *__lock != 0; +} + + +#endif /* machine-lock.h */ diff --git a/sysdeps/mach/mips/machine-sp.h b/sysdeps/mach/mips/machine-sp.h new file mode 100644 index 0000000000..7406658f53 --- /dev/null +++ b/sysdeps/mach/mips/machine-sp.h @@ -0,0 +1,38 @@ +/* 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. */ + +#ifndef _MACHINE_SP_H +#define _MACHINE_SP_H + +/* Return the current stack pointer. */ + +#ifndef _EXTERN_INLINE +#define _EXTERN_INLINE extern __inline +#endif + +_EXTERN_INLINE void * +__thread_stack_pointer (void) +{ + void *__sp__; + __asm__ ("move %0,$29" : "=r" (__sp__)); + return __sp__; +} + +#endif /* machine-sp.h */ + diff --git a/sysdeps/mach/mips/syscall.S b/sysdeps/mach/mips/syscall.S new file mode 100644 index 0000000000..bf56b401dd --- /dev/null +++ b/sysdeps/mach/mips/syscall.S @@ -0,0 +1,37 @@ +/* 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 + +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) + syscall /* Do the system call. */ + j ra /* Return to caller. */ + .end syscall diff --git a/sysdeps/mach/mips/sysdep.h b/sysdeps/mach/mips/sysdep.h new file mode 100644 index 0000000000..7609be5931 --- /dev/null +++ b/sysdeps/mach/mips/sysdep.h @@ -0,0 +1,69 @@ +/* Copyright (C) 1991, 1992, 1993, 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. */ + +#define MOVE(x,y) move y , x + +#if 0 +#define LOSE asm volatile ("1: b 1b") +#endif + +#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; \ + while (*p++ != NULL) \ + ; \ + if (p >= (char **) argv[0]) \ + --p; \ + envp = p; \ + } while (0) + +#define CALL_WITH_SP(fn, sp) \ + ({ register int __fn = fn, __sp = (int) sp; \ + asm volatile ("move $sp,%0; j %1" : : "r" (__sp), "r" (__fn));}) + +#define STACK_GROWTH_DOWN + +#ifdef P40 +#include + +#define SYSCALL(name, args) \ + .globl syscall_error; \ + kernel_trap(name,SYS_##name,args); \ + beq $1,$0,1f; \ + j syscall_error; \ +1: + +#define SYSCALL__(name, args) \ + .globl syscall_error; \ + kernel_trap(__##name,SYS_##name,args); \ + beq $1,$0,1f; \ + j syscall_error; \ +1: + +#define ret j ra; nop +#endif + +#include_next diff --git a/sysdeps/mach/mips/thread_state.h b/sysdeps/mach/mips/thread_state.h new file mode 100644 index 0000000000..f4f4b429cf --- /dev/null +++ b/sysdeps/mach/mips/thread_state.h @@ -0,0 +1,37 @@ +/* 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. + +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. */ + +#define MACHINE_THREAD_STATE_FLAVOR MIPS_THREAD_STATE +#define MACHINE_THREAD_STATE_COUNT MIPS_THREAD_STATE_COUNT + +#define machine_thread_state mips_thread_state + +#define PC pc +#define SP r29 +#define SYSRETURN r2 + +struct machine_thread_all_state + { + int set; /* Mask of bits (1 << FLAVOR). */ + struct mips_thread_state basic; + struct mips_exc_state exc; + struct mips_float_state fpu; + }; + +#include_next -- cgit 1.4.1