88 lines
2.9 KiB
ArmAsm
88 lines
2.9 KiB
ArmAsm
/* Copyright (c) 2001, 2009 Xilinx, Inc. All rights reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions are
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met:
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1. Redistributions source code must retain the above copyright notice,
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this list of conditions and the following disclaimer.
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2. Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in the
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documentation and/or other materials provided with the distribution.
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3. Neither the name of Xilinx nor the names of its contributors may be
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used to endorse or promote products derived from this software without
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specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER AND CONTRIBUTORS "AS
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IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
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PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
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TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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.globl _crtinit
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.align 2
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.ent _crtinit
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.type _crtinit, @function
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_crtinit:
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addi r1, r1, -20 /* Save Link register */
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swi r15, r1, 0
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addi r6, r0, __sbss_start /* clear SBSS */
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addi r7, r0, __sbss_end
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rsub r18, r6, r7
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blei r18, .Lendsbss
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.Lloopsbss:
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swi r0, r6, 0
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addi r6, r6, 4
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rsub r18, r6, r7
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bgti r18, .Lloopsbss
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.Lendsbss:
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addi r6, r0, __bss_start /* clear BSS */
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addi r7, r0, __bss_end
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rsub r18, r6, r7
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blei r18, .Lendbss
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.Lloopbss:
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swi r0, r6, 0
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addi r6, r6, 4
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rsub r18, r6, r7
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bgti r18, .Lloopbss
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.Lendbss:
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brlid r15, _program_init /* Initialize the program */
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nop
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brlid r15, __init /* Invoke language initialization functions */
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nop
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addi r6, r0, 0 /* Initialize argc = 1 and argv = NULL and envp = NULL */
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addi r7, r0, 0
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brlid r15, main /* Execute the program */
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addi r5, r0, 0
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addik r19, r3, 0 /* Save return value */
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brlid r15, __fini /* Invoke language cleanup functions */
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nop
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brlid r15, _program_clean /* Cleanup the program */
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nop
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lw r15, r1, r0 /* Return back to CRT */
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addik r3, r19, 0 /* Restore return value */
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rtsd r15, 8
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addi r1, r1, 20
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.end _crtinit
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