Gered
62af8575c6
- rename standard integer types to a more familiar (u)int(8/16/32) - many function/struct renames. i don't _really_ know if what i've done for this is better, but it "feels" better to me. many draw/blit function names are shorter which is nice, at least. kinda important to me because i develop this on a real DOS machine in 80x50 text mode. - add 'extern "C"' blocks to headers for C++ compiler usage - draw/pixel color value arguments for functions should all have been changed to be uint8 instead of a full 32-bit int. feels right, but maybe should've left alone... - small fix to keyboard handler. noticed a problem on one thinkpad laptop. was a result of what i think was a typo in a constant value used during the part of the interrupt handler that tells the keyboard controller the key event was processed - fix uncommon potential crash function return in draw_filled_rect - renamed low-level "direct" assembly functions to "lowlevel_xxx" to be a little bit more explicit about what they are - add some convenience event helper functions for determining event types - add fixed point atan2 - fixed some tabs/spaces inconsistences (should all be spaces now?) - maybe some other minor things i've forgotten
108 lines
2.7 KiB
C
Executable file
108 lines
2.7 KiB
C
Executable file
#ifndef LIBDGL_DGLUTIL_H
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#define LIBDGL_DGLUTIL_H
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#include "dglcmn.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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#define SWAP(type, a, b) \
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do { \
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type __tmp = a; \
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a = b; \
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b = __tmp; \
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} while (0)
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#define SIGN(x) (((x) < 0) ? -1 : (((x) > 0) ? 1 : 0))
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uint32 sys_clock();
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float clock_ticks_to_seconds(uint32 clocks);
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int rnd_int(int low, int high);
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float rnd_float(float low, float high);
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void int_enable(void);
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#pragma aux int_enable = "sti"
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void int_disable(void);
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#pragma aux int_disable = "cli"
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int32 fill32(uint8 value);
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#pragma aux fill32 = \
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"mov ah, al" \
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"shl eax, 8" \
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"mov al, ah" \
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"shl eax, 8" \
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"mov al, ah" \
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parm [al] \
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value [eax];
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void REP_MOVSD(const void *src, void *dest, uint32 num_dwords);
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#pragma aux REP_MOVSD = \
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"cld" \
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"rep movsd" \
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parm [esi] [edi] [ecx];
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void REP_MOVSB(const void *src, void *dest, uint32 num_bytes);
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#pragma aux REP_MOVSB = \
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"cld" \
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"rep movsb" \
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parm [esi] [edi] [ecx];
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void REP_STOSD(uint32 value, void *dest, uint32 num_dwords);
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#pragma aux REP_STOSD = \
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"cld" \
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"rep stosd" \
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parm [eax] [edi] [ecx];
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void REP_STOSB(uint32 value, void *dest, uint32 num_bytes);
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#pragma aux REP_STOSB = \
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"cld" \
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"rep stosb" \
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parm [eax] [edi] [ecx];
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void mem_fill(void *dest, uint8 value, uint32 num_bytes);
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#pragma aux mem_fill = \
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"mov ah, al" \
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"mov bx, ax" \
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"shl eax, 16" \
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"mov ax, bx" \
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"mov ebx, ecx" \
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"shr ecx, 2" \
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"and ebx, 3" \
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"rep stosd" \
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"mov ecx, ebx" \
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"rep stosb" \
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parm [edi] [al] [ecx] \
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modify [eax ebx ecx edi];
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void mem_fill32(void *dest, uint32 value, uint32 num_bytes);
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#pragma aux mem_fill32 = \
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"mov ebx, ecx" \
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"shr ecx, 2" \
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"and ebx, 3" \
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"rep stosd" \
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"mov ecx, ebx" \
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"rep stosb" \
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parm [edi] [eax] [ecx] \
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modify [eax ebx ecx edi];
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void mem_copy(void *dest, const void *src, uint32 num_bytes);
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#pragma aux mem_copy = \
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"mov ebx, ecx" \
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"shr ecx, 2" \
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"and ebx, 3" \
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"rep movsd" \
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"mov ecx, ebx" \
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"rep movsb" \
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parm [edi] [esi] [ecx] \
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modify [eax ebx ecx];
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#ifdef __cplusplus
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}
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#endif
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#endif
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