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Last change
on this file since 22010 was 21942, checked in by dmik, 14 years ago |
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Use custom startup code for PE loader.
This allows to grab the lowest memory address before any DLL
(including the C library) kicks in and reserves memory for its own
purposes. This fixes #54.
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-
Property svn:eol-style
set to
native
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File size:
754 bytes
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| 1 | /** @file
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| 2 | *
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| 3 | * Minimalistic application entry point.
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| 4 | *
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| 5 | * This gets control when the executable is loaded.
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| 6 | *
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| 7 | * Project Odin Software License can be found in LICENSE.TXT
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| 8 | */
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| 9 |
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| 10 | .globl WEAK$ZERO
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| 11 |
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| 12 | WEAK$ZERO = 0
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| 13 |
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| 14 | .globl __text
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| 15 | .globl ___main
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| 16 |
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| 17 |
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| 18 | .text
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| 19 |
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| 20 | /*
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| 21 | * Entry point.
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| 22 | *
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| 23 | * It calls the function that must be defined as
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| 24 | * <code>
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| 25 | * extern "C" int simple_main(void)
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| 26 | * <code>
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| 27 | * and returns its return code to the system.
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| 28 | */
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| 29 | __text:
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| 30 |
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| 31 | cld
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| 32 | call _simple_main
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| 33 | ret
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| 34 |
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| 35 | /*
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| 36 | * GCC always generates a call to ___main from _main, so use a dummy
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| 37 | * funciton.
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| 38 | */
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| 39 | ___main:
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| 40 | ret
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| 41 |
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| 42 |
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| 43 | .data
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| 44 |
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| 45 | /*
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| 46 | * force creation of the data segment to keep the assumed order of
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| 47 | * objects in the executable (CODE, DATA/BSS, STACK)
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| 48 | */
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| 49 | .long 0
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