diff options
Diffstat (limited to 'sysdeps/standalone/i386/force_cpu386/strtsupp.S')
| -rw-r--r-- | sysdeps/standalone/i386/force_cpu386/strtsupp.S | 87 |
1 files changed, 0 insertions, 87 deletions
diff --git a/sysdeps/standalone/i386/force_cpu386/strtsupp.S b/sysdeps/standalone/i386/force_cpu386/strtsupp.S deleted file mode 100644 index 5d9ac5c4a1..0000000000 --- a/sysdeps/standalone/i386/force_cpu386/strtsupp.S +++ /dev/null @@ -1,87 +0,0 @@ -/* Copyright (C) 1994, 1997 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 Lesser General Public - License as published by the Free Software Foundation; either - version 2.1 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 - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public - License along with the GNU C Library; if not, write to the Free - Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA - 02111-1307 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 |