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authorJakub Jelinek <jakub@redhat.com>2004-11-02 12:26:42 +0000
committerJakub Jelinek <jakub@redhat.com>2004-11-02 12:26:42 +0000
commit80c96e8e6f452d6d9803f5a2e17030658f30afc4 (patch)
treeef584f35ed7167c7a680783415a66799c3789233 /sysdeps/standalone/i960/start.S
parent0b5cfa4e0b7c9dc2cd81635307613c86c0f5e200 (diff)
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Updated to fedora-glibc-20041102T1153
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diff --git a/sysdeps/standalone/i960/start.S b/sysdeps/standalone/i960/start.S
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-/* 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.
-
-   In addition to the permissions in the GNU Lesser General Public
-   License, the Free Software Foundation gives you unlimited
-   permission to link the compiled version of this file with other
-   programs, and to distribute those programs without any restriction
-   coming from the use of this file. (The GNU Lesser General Public
-   License restrictions do apply in other respects; for example, they
-   cover modification of the file, and distribution when not linked
-   into another program.)
-
-   Note that people who make modified versions of this file are not
-   obligated to grant this special exception for their modified
-   versions; it is their choice whether to do so. The GNU Lesser
-   General Public License gives permission to release a modified
-   version without this exception; this exception also makes it
-   possible to release a modified version which carries forward this
-   exception.
-
-   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.  */
-
-/*  entry.s
- *
- *  This file contains the entry point for the application.
- *  The name of this entry point is compiler dependent.
- *  It jumps to the BSP which is responsible for performing
- *  all initialization.
- *
- */
-
-	 .text
-	 .globl  start                  # GNU960 default entry point
-
-start:
-	mov     3, r12
-	modpc   r12, r12, r12         # enable tracing/trace faults
-	mov     g5, g5                # NOP
-	mov     0, g14                # initialize constant for C
-
-	/*
-	 * zero out uninitialized data area
-	 */
-zerobss:
-	lda     _end, r4        /* find end of .bss */
-	lda     _bss_start, r5  /* find beginning of .bss */
-	ldconst 0, r6
-
-loop:   st      r6, (r5)        /* to zero out uninitialized */
-	addo    4, r5, r5       /* data area                 */
-	cmpobl  r5, r4, loop    /* loop until _end reached   */
-
-
-	lda     heap_memory, r12      /* tell C lib where heap is */
-	st      r12,___C_heap_start
-	lda     heap_size, r12        /* tell C lib how big heap is */
-	st      r12,___C_heap_size
-	lda     stack_memory,r12      /* set up stack pointer: */
-	mov     r12, sp
-	mov     0, g14           /* initialize constant for C */
-
-	call    init_frames
-	ret                      /* return to monitor */
-
-init_frames:
-	ldconst 0x3b001000, g0
-	ldconst 0x00009107, g1
-	modac   g1, g0, g0       /* set AC controls */
-
-	/*
-	 * Call application mainline.
-	 *      Someday, real values of argc and argv will be set up.
-	 *      For now, they are set to 0.
-	 */
-
-	callx   __Board_Initialize    /* Initialize the board */
-
-	ldconst 0,g0
-	ldconst 0,g1
-	ldconst 0,g2
-	callx   ___libc_init          /* initialize the library and */
-				      /*   call main */
-	/*
-	 * if we return from main, we have "fallen" off the end
-	 * of the program, therefore status is 0
-	 * so move 0 to g0 (exit parameter)
-	 */
-
-	mov     0, g0
-	callx   __exit
-	ret
-
-
-/*
- *  Data Declarations.  Start with a macro which helps declare space.
- */
-
-#define DECLARE_SPACE(_name,_space,_align) \
-	  .globl   _name ; \
-	  .align   _align ; \
-.comm     _name##,_space
-
-#define DECLARE_LABEL(_name) \
-	  .globl   _name ; \
-_name##:
-
-#define DECLARE_PTR(_name) DECLARE_SPACE(_name,4,2)
-#define DECLARE_U32(_name) DECLARE_SPACE(_name,4,2)
-#define DECLARE_U16(_name) DECLARE_SPACE(_name,2,1)
-
-/*
- *  Require environment stuff
- */
-
-DECLARE_LABEL(_environ)
-DECLARE_PTR(environ)
-
-DECLARE_LABEL(_errno)
-DECLARE_U32(errno)
-
-/*
- *  Stack Size and Space
- */
-
-	.set stack_size, 0x20000
-
-DECLARE_SPACE(stack_memory,stack_size,4)
-DECLARE_LABEL(stack_end)
-
-/*
- *  Heap Size and Space
- */
-
-	.set heap_size, 0x20000
-
-DECLARE_SPACE(heap_memory,heap_size,4)
-DECLARE_LABEL(heap_end)