59 lines
1.5 KiB
ArmAsm
59 lines
1.5 KiB
ArmAsm
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/* linux-crt0 -- Startup routines for the Linux BSP.
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*
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* Copyright (c) 2011 Edgar E. Iglesias
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*
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* The authors hereby grant permission to use, copy, modify, distribute,
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* and license this software and its documentation for any purpose, provided
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* that existing copyright notices are retained in all copies and that this
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* notice is included verbatim in any distributions. No written agreement,
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* license, or royalty fee is required for any of the authorized uses.
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* Modifications to this software may be copyrighted by their authors
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* and need not follow the licensing terms described here, provided that
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* the new terms are clearly indicated on the first page of each file where
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* they apply.
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*/
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.section .text
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.globl _start
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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_
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la r2, r0, _SDA2_BASE_
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brlid r15, __init
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nop
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lwi r5, r1, 0
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addik r6, r1, 4
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# Add argc * 4.
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addk r7, r5, r5
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addk r7, r7, r7
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brlid r15, main
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# Now add 4 + r1 (i.e r6) in the delayslot.
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addk r7, r7, r6
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brlid r15, exit
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addik r5, r3, 0
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.size _start, . - _start
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.end _start
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/* Replacement for the GCC provided crti.S. This one avoids the
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setup of stack protection regs (which result in privilieged
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insn exceptions when running in user-space). */
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.section .init, "ax"
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.global __init
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.align 2
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__init:
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addik r1, r1, -8
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sw r15, r0, r1
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.section .fini, "ax"
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.global __fini
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.align 2
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__fini:
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addik r1, r1, -8
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sw r15, r0, r1
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