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34 lines
980 B
C
34 lines
980 B
C
/*
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* TODO: This is to be used when moving mm0's temporary
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* stack to a proper place. It's unused for now.
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*
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* Copyright (C) 2007, 2008 Bahadir Balban
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*/
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#include <l4/config.h>
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#include <l4/macros.h>
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#include <l4/types.h>
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#include INC_GLUE(memlayout.h)
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#include <string.h>
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/* The initial temporary stack used until memory is set up */
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__attribute__ ((section("init.stack"))) char stack[4096];
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extern unsigned long __stack[]; /* Linker defined */
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/* Moves from temporary stack to where it should be in actual. */
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void move_stack()
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{
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register unsigned int sp asm("sp");
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register unsigned int fp asm("r11");
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unsigned int stack_offset = (unsigned long)__stack - sp;
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unsigned int frame_offset = (unsigned long)__stack - fp;
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/* Copy current stack into new stack. NOTE: This might demand-page
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* the new stack, but maybe that won't work. */
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memcpy((void *)USER_AREA_END, __stack, stack_offset);
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sp = USER_AREA_END - stack_offset;
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fp = USER_AREA_END - frame_offset;
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}
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