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authorJoel Sherrill <joel.sherrill@OARcorp.com>1999-11-19 16:22:09 +0000
committerJoel Sherrill <joel.sherrill@OARcorp.com>1999-11-19 16:22:09 +0000
commit9c0385aaa91504d40e1625c7a34f681d68be4a27 (patch)
treee903eb0b08a32bfc64e93509a261c87f4b2e67f2 /c/src/lib/libbsp/powerpc/psim/startsim/startsim.S
parentMoved startsis to start. (diff)
downloadrtems-9c0385aaa91504d40e1625c7a34f681d68be4a27.tar.bz2
Renaming all BSP specific startXXX directories to use the same name (start).
Diffstat (limited to '')
-rw-r--r--c/src/lib/libbsp/powerpc/psim/startsim/startsim.S106
1 files changed, 0 insertions, 106 deletions
diff --git a/c/src/lib/libbsp/powerpc/psim/startsim/startsim.S b/c/src/lib/libbsp/powerpc/psim/startsim/startsim.S
deleted file mode 100644
index f94a3ca330..0000000000
--- a/c/src/lib/libbsp/powerpc/psim/startsim/startsim.S
+++ /dev/null
@@ -1,106 +0,0 @@
-/*
- * This is based on the mvme-crt0.S file from libgloss/rs6000.
- * crt0.S -- startup file for PowerPC systems.
- *
- * Copyright (c) 1995 Cygnus Support
- *
- * The authors hereby grant permission to use, copy, modify, distribute,
- * and license this software and its documentation for any purpose, provided
- * that existing copyright notices are retained in all copies and that this
- * notice is included verbatim in any distributions. No written agreement,
- * license, or royalty fee is required for any of the authorized uses.
- * Modifications to this software may be copyrighted by their authors
- * and need not follow the licensing terms described here, provided that
- * the new terms are clearly indicated on the first page of each file where
- * they apply.
- *
- * $Id$
- */
-
-#include "ppc-asm.h"
-
- .file "startsim.s"
- .section ".got2","aw"
- .align 2
-
-.LCTOC1 = .+32768
-
- .extern FUNC_NAME(atexit)
- .globl FUNC_NAME(__atexit)
- .section ".sdata","aw"
- .align 2
-FUNC_NAME(__atexit): /* tell C's eabi-ctor's we have an atexit function */
- .long FUNC_NAME(atexit)@fixup /* and that it is to register __do_global_dtors */
-
- .section ".fixup","aw"
- .align 2
- .long FUNC_NAME(__atexit)
-
- .section ".got2","aw"
-.Ltable = .-.LCTOC1
- .long .LCTOC1 /* address we think .LCTOC1 is loaded at */
-
-.Lbss_start = .-.LCTOC1
- .long __bss_start
-
-.Lend = .-.LCTOC1
- .long _end
-
-.Lstack = .-.LCTOC1 /* stack address if set by user */
- .long __stack
-
- .text
-.Lptr:
- .long .LCTOC1-.Laddr
-
- .globl _start
- .type _start,@function
-_start:
- bl .Laddr /* get current address */
-.Laddr:
- mflr r4 /* real address of .Laddr */
- lwz r5,(.Lptr-.Laddr)(r4) /* linker generated address of .LCTOC1 */
- add r5,r5,r4 /* correct to real pointer */
- lwz r4,.Ltable(r5) /* get linker's idea of where .Laddr is */
- subf r4,r4,r5 /* calculate difference between where linked and current */
-
- /* clear bss */
- lwz r6,.Lbss_start(r5) /* calculate beginning of the BSS */
- lwz r7,.Lend(r5) /* calculate end of the BSS */
- add r6,r6,r4 /* adjust pointers */
- add r7,r7,r4
-
- cmplw 1,r6,r7
- bc 4,4,.Ldone
-
- subf r8,r6,r7 /* number of bytes to zero */
- srwi r9,r8,2 /* number of words to zero */
- mtctr r9
- li r0,0 /* zero to clear memory */
- addi r6,r6,-4 /* adjust so we can use stwu */
-.Lloop:
- stwu r0,4(r6) /* zero bss */
- bdnz .Lloop
-
-.Ldone:
-
- lwz r0,.Lstack(r5) /* stack address or 0 */
- cmplwi 1,r0,0 /* equal to 0? */
- bc 12,6,.Lnostack /* use default stack if == 0 */
- mr sp,r0 /* use user defined stack */
-
-.Lnostack:
- /* set up initial stack frame */
- addi sp,sp,-4 /* make sure we don't overwrite debug mem */
- lis r0,0
- stw r0,0(sp) /* clear back chain */
- stwu sp,-56(sp) /* push another stack frame */
-
- /* Let her rip */
- bl FUNC_NAME(boot_card)
-
- /* return value from boot_card is argument to exit */
- bl FUNC_NAME(exit)
- trap
-.Lstart:
- .size _start,.Lstart-_start