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Last change
on this file since 20 was 4, checked in by Mattia Monga, 14 years ago |
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Importazione sorgenti libro
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File size:
843 bytes
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| 1 | /* The kernel call implemented in this file:
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| 2 | * m_type: SYS_MEMSET
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| 3 | *
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| 4 | * The parameters for this kernel call are:
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| 5 | * m2_p1: MEM_PTR (virtual address)
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| 6 | * m2_l1: MEM_COUNT (returns physical address)
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| 7 | * m2_l2: MEM_PATTERN (size of datastructure)
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| 8 | */
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| 9 |
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| 10 | #include "../system.h"
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| 11 |
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| 12 | #if USE_MEMSET
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| 13 |
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| 14 | /*===========================================================================*
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| 15 | * do_memset *
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| 16 | *===========================================================================*/
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| 17 | PUBLIC int do_memset(m_ptr)
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| 18 | register message *m_ptr;
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| 19 | {
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| 20 | /* Handle sys_memset(). This writes a pattern into the specified memory. */
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| 21 | unsigned long p;
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| 22 | unsigned char c = m_ptr->MEM_PATTERN;
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| 23 | p = c | (c << 8) | (c << 16) | (c << 24);
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| 24 | phys_memset((phys_bytes) m_ptr->MEM_PTR, p, (phys_bytes) m_ptr->MEM_COUNT);
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| 25 | return(OK);
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| 26 | }
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| 27 |
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| 28 | #endif /* USE_MEMSET */
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| 29 |
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