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jeremybenn |
/* 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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MicroBlaze Vector Map for standalone executables
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downloaded and executed with XMDSTUB
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Address Vector type Label
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------- ----------- ------
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# 0x00 # (-- IMM --)
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# 0x04 # Reset (-- Don't Care --)
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# 0x08 # (-- IMM --)
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# 0x0c # Software Exception _exception_handler
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# 0x10 # (-- IMM --)
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# 0x14 # Hardware Interrupt _interrupt_handler
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# 0x18 # (-- IMM --)
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# 0x1C # Breakpoint Exception (-- Don't Care --)
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# 0x20 # (-- IMM --)
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# 0x24 # Hardware Exception _hw_exception_handler
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*/
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.section .vectors.sw_exception, "ax"
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.align 2
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_vector_sw_exception:
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brai _exception_handler
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.section .vectors.interrupt, "ax"
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.align 2
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_vector_interrupt:
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brai _interrupt_handler
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.section .vectors.hw_exception, "ax"
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.align 2
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_vector_hw_exception:
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brai _hw_exception_handler
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.section .text
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.globl _start
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.align 2
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.ent _start
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.type _start, @function
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_start:
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la r13, r0, _SDA_BASE_ /* Set the Small Data Anchors and the stack pointer */
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la r2, r0, _SDA2_BASE_
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la r1, r0, _stack-16 /* 16 bytes (4 words are needed by crtinit for args and link reg */
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brlid r15, _crtinit /* Initialize BSS and run program */
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nop
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brlid r15, exit /* Call exit with the return value of main */
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addik r5, r3, 0
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/* Control does not reach here */
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.end _start
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/*
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_exit
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Our simple _exit
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*/
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.globl _exit
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.align 2
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.ent _exit
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.type _exit, @function
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_exit:
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add r3, r0, r5
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brki r16, 0x4 /* Return to hook in XMDSTUB */
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.end _exit
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