diff options
| -rw-r--r-- | sysdeps/standalone/i386/force_cpu386/_exit.c | 47 | ||||
| -rw-r--r-- | sysdeps/standalone/i386/force_cpu386/strtsupp.S | 89 | ||||
| -rw-r--r-- | sysdeps/standalone/i960/nindy960/Makefile | 23 | ||||
| -rw-r--r-- | sysdeps/standalone/i960/nindy960/_exit.c | 55 | ||||
| -rw-r--r-- | sysdeps/standalone/m68k/m68020/mvme136/Makefile | 22 |
5 files changed, 236 insertions, 0 deletions
diff --git a/sysdeps/standalone/i386/force_cpu386/_exit.c b/sysdeps/standalone/i386/force_cpu386/_exit.c new file mode 100644 index 0000000000..011bb8bda9 --- /dev/null +++ b/sysdeps/standalone/i386/force_cpu386/_exit.c @@ -0,0 +1,47 @@ +/* Copyright (C) 1991 Free Software Foundation, Inc. + Contributed by Joel Sherrill (jsherril@redstone-emh2.army.mil), + On-Line Applications Research Corporation. + +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 <ansidecl.h> +#include <unistd.h> +#include <stdlib.h> + +/* This returns control to FORCEbug. */ + +void DEFUN_VOID(Bsp_cleanup); + +/* The function `_exit' should take a status argument and simply + terminate program execution, using the low-order 8 bits of the + given integer as status. */ + +__NORETURN void +DEFUN(_exit, (status), int status) +{ + /* status is ignored */ + Bsp_cleanup(); +} + +#ifdef HAVE_GNU_LD + +#include <gnu-stabs.h> + +stub_warning(_exit); + +#endif /* GNU stabs. */ diff --git a/sysdeps/standalone/i386/force_cpu386/strtsupp.S b/sysdeps/standalone/i386/force_cpu386/strtsupp.S new file mode 100644 index 0000000000..6b78a8c343 --- /dev/null +++ b/sysdeps/standalone/i386/force_cpu386/strtsupp.S @@ -0,0 +1,89 @@ +/* Copyright (C) 1994 Free Software Foundation, Inc. + Contributed by Joel Sherrill (jsherril@redstone-emh2.army.mil), + On-Line Applications Research Corporation. + +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. */ + +/* This file assists the board independent startup code by + * loading the proper segment register values. The values + * loaded are dependent on the FORCEBUG. + * + * NOTE: No stack has been established when this routine + * is invoked. It returns by jumping back to the start code. + * + */ + +/* + * FORCEBUG loads us into a virtual address space which + * really starts at PHYSICAL_ADDRESS_BASE. + * + */ + +.set PHYSICAL_ADDRESS_BASE, 0x00002000 + +/* + * At reset time, FORCEBUG normally has the segment selectors preloaded. + * If a human resets the instruction pointer, this will not have occurred. + * However, no guarantee can be made of the other registers if cs:ip was + * modified to restart the program. Because of this, the BSP reloads all + * segment registers (except cs) with the values they have following + * a reset. + */ + + +.set RESET_SS, 0x40 # initial value of stack segment register +.set RESET_DS, 0x40 # initial value of data segment register +.set RESET_ES, 0x40 # initial value of extra segment register +.set RESET_FS, 0x40 # initial value of "f" segment register +.set RESET_GS, 0x30 # initial value of "g" segment register + + +#define LOAD_SEGMENTS(_value,_segreg) \ + movw $_value##,%ax ; \ + movw %ax,##_segreg + + + .global _load_segments + + .global _establish_stack + +_load_segments: + + LOAD_SEGMENTS( RESET_SS, %ss ) + LOAD_SEGMENTS( RESET_DS, %ds ) + LOAD_SEGMENTS( RESET_ES, %es ) + LOAD_SEGMENTS( RESET_FS, %fs ) + LOAD_SEGMENTS( RESET_GS, %gs ) + + jmp _establish_stack # return to the bsp entry code + + .global _return_to_monitor +_return_to_monitor: + + movb $0,%al + int $0x20 # restart FORCEbug + jmp start # FORCEbug does not reset PC + + .data + + .global _Do_Load_IDT +_Do_Load_IDT: .byte 1 + + .global _Do_Load_GDT +_Do_Load_GDT: .byte 0 + diff --git a/sysdeps/standalone/i960/nindy960/Makefile b/sysdeps/standalone/i960/nindy960/Makefile new file mode 100644 index 0000000000..e6e65ea064 --- /dev/null +++ b/sysdeps/standalone/i960/nindy960/Makefile @@ -0,0 +1,23 @@ +# Copyright (C) 1993 Free Software Foundation, Inc. +# Contributed by Joel Sherrill (jsherril@redstone-emh2.army.mil), +# On-Line Applications Research Corporation. + +# 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. + + +# The nindy960 support has only been tested on the following boards: +# +# + Cyclone CVME961 VMEbus single board computer. diff --git a/sysdeps/standalone/i960/nindy960/_exit.c b/sysdeps/standalone/i960/nindy960/_exit.c new file mode 100644 index 0000000000..33553a7a2c --- /dev/null +++ b/sysdeps/standalone/i960/nindy960/_exit.c @@ -0,0 +1,55 @@ +/* Copyright (C) 1991 Free Software Foundation, Inc. + Contributed by Joel Sherrill (jsherril@redstone-emh2.army.mil), + On-Line Applications Research Corporation. + +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 <ansidecl.h> +#include <unistd.h> +#include <stdlib.h> + +/* The function `_exit' should take a status argument and simply + terminate program execution, using the low-order 8 bits of the + given integer as status. */ + +/* This returns control to Nindy. */ + +__NORETURN void +DEFUN(_exit, (status), int status) +{ + /* status is ignored */ + + asm volatile( "mov 0,g0; \ + fmark ; \ + syncf ; \ + .word 0xfeedface ; \ + bx start" : : ); + /* The constant 0xfeedface is a magic word for break which + * is defined by NINDY. The branch extended restarts the + * application if the user types "go". + */ +} + + +#ifdef HAVE_GNU_LD + +#include <gnu-stabs.h> + +stub_warning(_exit); + +#endif /* GNU stabs. */ diff --git a/sysdeps/standalone/m68k/m68020/mvme136/Makefile b/sysdeps/standalone/m68k/m68020/mvme136/Makefile new file mode 100644 index 0000000000..33f049c58c --- /dev/null +++ b/sysdeps/standalone/m68k/m68020/mvme136/Makefile @@ -0,0 +1,22 @@ +# Copyright (C) 1993 Free Software Foundation, Inc. +# Contributed by Joel Sherrill (jsherril@redstone-emh2.army.mil), +# On-Line Applications Research Corporation. + +# 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. + +ifeq (bare,$(subdir)) +install-lib += mvme136.ld +endif |