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2009-09-28 Michael Eager <eager@eagercon.com>

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* configure.in: Add microblaze-*-*.
        * configure: Add microblaze-*-* (not regenerated.)
        * microblaze: NEW microblaze target directory.
        * microblaze/configure.in: NEW.
        * microblaze/configure: Generate.
        * microblaze/Makefile.in: NEW.
        * microblaze/{crt0.S, crt1.S, crt2.S, crt3.S, crt4.S, crtinit.S}: NEW.
        * microblaze/{pgcrtinit.S, _program_clean.S, _program_init.S,
        sbrk.c, sim-crtinit.S, sim-pgcrtinit.S, timer.c, _exception_handler.S,
        _hw_exception_handler.S, _interrupt_handler.S, xil_malloc.c,
        nnxil_printf.c, xil_sbrk.c: NEW.
        * microblaze/xilinx.ld: NEW.
This commit is contained in:
Jeff Johnston
2009-09-28 16:43:57 +00:00
parent 6c249577fb
commit c38ed7c697
25 changed files with 6064 additions and 0 deletions
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87
libgloss/microblaze/crtinit.S Normal file
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/* Copyright (c) 2001, 2009 Xilinx, Inc. All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are
met:
1. Redistributions source code must retain the above copyright notice,
this list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
3. Neither the name of Xilinx nor the names of its contributors may be
used to endorse or promote products derived from this software without
specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER AND CONTRIBUTORS "AS
IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
.globl _crtinit
.align 2
.ent _crtinit
.type _crtinit, @function
_crtinit:
addi r1, r1, -20 /* Save Link register */
swi r15, r1, 0
addi r6, r0, __sbss_start /* clear SBSS */
addi r7, r0, __sbss_end
rsub r18, r6, r7
blei r18, .Lendsbss
.Lloopsbss:
swi r0, r6, 0
addi r6, r6, 4
rsub r18, r6, r7
bgti r18, .Lloopsbss
.Lendsbss:
addi r6, r0, __bss_start /* clear BSS */
addi r7, r0, __bss_end
rsub r18, r6, r7
blei r18, .Lendbss
.Lloopbss:
swi r0, r6, 0
addi r6, r6, 4
rsub r18, r6, r7
bgti r18, .Lloopbss
.Lendbss:
brlid r15, _program_init /* Initialize the program */
nop
brlid r15, __init /* Invoke language initialization functions */
nop
addi r6, r0, 0 /* Initialize argc = 1 and argv = NULL and envp = NULL */
addi r7, r0, 0
brlid r15, main /* Execute the program */
addi r5, r0, 0
addik r19, r3, 0 /* Save return value */
brlid r15, __fini /* Invoke language cleanup functions */
nop
brlid r15, _program_clean /* Cleanup the program */
nop
lw r15, r1, r0 /* Return back to CRT */
addik r3, r19, 0 /* Restore return value */
rtsd r15, 8
addi r1, r1, 20
.end _crtinit