61 lines
1.6 KiB
C++
61 lines
1.6 KiB
C++
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#ifndef DGL_INTERNAL_H_INCLUDED
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#define DGL_INTERNAL_H_INCLUDED
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#include "common.h"
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#include <dpmi.h>
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#define END_OF_FUNCTION(x) void x##_end() {}
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#define LOCK_VARIABLE(x) _go32_dpmi_lock_data((void*)&x, sizeof(x))
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#define LOCK_MEMORY(ptr, len) _go32_dpmi_lock_data((void*)(ptr), (len))
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#define LOCK_FUNCTION(x) _go32_dpmi_lock_code(x, (long)x##_end - (long)x)
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static inline void _enable_interrupts(void) {
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asm volatile ("sti");
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}
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static inline void _disable_interrupts(void) {
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asm volatile ("cli");
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}
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boolean _install_irq(int irq,
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void* irq_handler,
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_go32_dpmi_seginfo* new_handler,
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_go32_dpmi_seginfo* old_handler);
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boolean _restore_irq(int irq,
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_go32_dpmi_seginfo* new_handler,
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_go32_dpmi_seginfo* old_handler);
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#define REP_MOVSL(src, dest, num_dwords) \
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__asm__ __volatile__ ( \
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"cld\n\t" \
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"rep\n\t" \
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"movsl" \
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: : "S" (src), "D" (dest), "c" (num_dwords) \
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: "%ecx", "%esi", "%edi" )
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#define REP_MOVSB(src, dest, num_bytes) \
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__asm__ __volatile__ ( \
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"cld\n\t" \
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"rep\n\t" \
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"movsb" \
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: : "S" (src), "D" (dest), "c" (num_bytes) \
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: "%ecx", "%esi", "%edi" )
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#define REP_STOSL(value, dest, num_dwords) \
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__asm__ __volatile__ ( \
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"cld\n\t" \
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"rep\n\t" \
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"stosl" \
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: : "a" (value), "D" (dest), "c" (num_dwords) \
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: "%ecx", "%edi" )
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#define REP_STOSB(value, dest, num_bytes) \
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__asm__ __volatile__ ( \
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"cld\n\t" \
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"rep\n\t" \
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"stosb" \
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: : "a" (value), "D" (dest), "c" (num_bytes) \
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: "%ecx", "%edi" )
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#endif
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