src/hermes/mmxp2_32.asm
author Sam Lantinga <slouken@libsdl.org>
Mon, 29 May 2006 04:04:35 +0000
branchSDL-1.3
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;
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; pII-optimised MMX format converters for HERMES
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; Copyright (c) 1998 Christian Nentwich (c.nentwich@cs.ucl.ac.uk)
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;   and (c) 1999 Jonathan Matthew (jmatthew@uq.net.au)
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; This source code is licensed under the GNU LGPL
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; 
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; Please refer to the file COPYING.LIB contained in the distribution for
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; licensing conditions		
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;
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; COPYRIGHT NOTICE
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; 
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; This file partly contains code that is (c) Intel Corporation, specifically
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; the mode detection routine, and the converter to 15 bit (8 pixel
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; conversion routine from the mmx programming tutorial pages).
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;
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;
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; These routines aren't exactly pII optimised - it's just that as they
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; are, they're terrible on p5 MMXs, but less so on pIIs.  Someone needs to
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; optimise them for p5 MMXs..
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BITS 32
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GLOBAL _ConvertMMXpII32_24RGB888
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GLOBAL _ConvertMMXpII32_16RGB565
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GLOBAL _ConvertMMXpII32_16BGR565
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GLOBAL _ConvertMMXpII32_16RGB555
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GLOBAL _ConvertMMXpII32_16BGR555
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EXTERN _mmxreturn
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;; Macros for conversion routines
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%macro _push_immq_mask 1
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	push dword %1
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	push dword %1
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%endmacro
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%macro load_immq 2
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	_push_immq_mask %2
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	movq %1, [esp]
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%endmacro
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%macro pand_immq 2
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	_push_immq_mask %2
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	pand %1, [esp]
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%endmacro
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%define CLEANUP_IMMQ_LOADS(num) \
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	add esp, byte 8 * num
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%define mmx32_rgb888_mask 00ffffffh
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%define mmx32_rgb565_b 000000f8h
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%define mmx32_rgb565_g 0000fc00h
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%define mmx32_rgb565_r 00f80000h
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%define mmx32_rgb555_rb 00f800f8h
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%define mmx32_rgb555_g 0000f800h
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%define mmx32_rgb555_mul 20000008h
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%define mmx32_bgr555_mul 00082000h
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SECTION .text
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_ConvertMMXpII32_24RGB888:
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        ; set up mm6 as the mask, mm7 as zero
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        load_immq mm6, mmx32_rgb888_mask
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        CLEANUP_IMMQ_LOADS(1)
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        pxor mm7, mm7
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        mov edx, ecx                    ; save ecx
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        and ecx, 0fffffffch             ; clear lower two bits
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        jnz .L1
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        jmp .L2
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.L1:
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        movq mm0, [esi]                 ; A R G B a r g b
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        pand mm0, mm6                   ; 0 R G B 0 r g b
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        movq mm1, [esi+8]               ; A R G B a r g b
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        pand mm1, mm6                   ; 0 R G B 0 r g b
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        movq mm2, mm0                   ; 0 R G B 0 r g b
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        punpckhdq mm2, mm7              ; 0 0 0 0 0 R G B
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        punpckldq mm0, mm7              ; 0 0 0 0 0 r g b
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        psllq mm2, 24                   ; 0 0 R G B 0 0 0
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        por mm0, mm2                    ; 0 0 R G B r g b
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        movq mm3, mm1                   ; 0 R G B 0 r g b
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        psllq mm3, 48                   ; g b 0 0 0 0 0 0
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        por mm0, mm3                    ; g b R G B r g b
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        movq mm4, mm1                   ; 0 R G B 0 r g b
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        punpckhdq mm4, mm7              ; 0 0 0 0 0 R G B
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        punpckldq mm1, mm7              ; 0 0 0 0 0 r g b
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        psrlq mm1, 16                   ; 0 0 0 R G B 0 r
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        psllq mm4, 8                    ; 0 0 0 0 R G B 0
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        por mm1, mm4                    ; 0 0 0 0 R G B r
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        movq [edi], mm0
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        add esi, BYTE 16
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        movd [edi+8], mm1
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        add edi, BYTE 12
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        sub ecx, BYTE 4
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        jnz .L1
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.L2:
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        mov ecx, edx
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        and ecx, BYTE 3
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        jz .L4
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.L3:
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        mov al, [esi]
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        mov bl, [esi+1]
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        mov dl, [esi+2]
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        mov [edi], al
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        mov [edi+1], bl
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        mov [edi+2], dl
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        add esi, BYTE 4
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        add edi, BYTE 3
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        dec ecx
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        jnz .L3
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.L4:
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        jmp _mmxreturn
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_ConvertMMXpII32_16RGB565:
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        ; set up masks
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        load_immq mm5, mmx32_rgb565_b
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        load_immq mm6, mmx32_rgb565_g
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        load_immq mm7, mmx32_rgb565_r
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        CLEANUP_IMMQ_LOADS(3)
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        mov edx, ecx
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        shr ecx, 2
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        jnz .L1
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        jmp .L2         ; not necessary at the moment, but doesn't hurt (much)
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.L1:
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        movq mm0, [esi]         ; argb
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        movq mm1, mm0           ; argb
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        pand mm0, mm6           ; 00g0
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        movq mm3, mm1           ; argb
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        pand mm1, mm5           ; 000b
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        pand mm3, mm7           ; 0r00
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        pslld mm1, 2            ; 0 0 000000bb bbb00000
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        por mm0, mm1            ; 0 0 ggggggbb bbb00000
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        psrld mm0, 5            ; 0 0 00000ggg gggbbbbb
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   150
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   151
        movq mm4, [esi+8]       ; argb
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   152
        movq mm2, mm4           ; argb
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   153
        pand mm4, mm6           ; 00g0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   154
        movq mm1, mm2           ; argb
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   155
        pand mm2, mm5           ; 000b
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   156
        pand mm1, mm7           ; 0r00
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   157
        pslld mm2, 2            ; 0 0 000000bb bbb00000
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   158
        por mm4, mm2            ; 0 0 ggggggbb bbb00000
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   159
        psrld mm4, 5            ; 0 0 00000ggg gggbbbbb
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   160
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   161
        packuswb mm3, mm1       ; R 0 r 0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   162
        packssdw mm0, mm4       ; as above.. ish
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   163
        por mm0, mm3            ; done.
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   164
        movq [edi], mm0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   165
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   166
        add esi, 16
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   167
        add edi, 8
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   168
        dec ecx
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   169
        jnz .L1
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   170
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   171
.L2:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   172
        mov ecx, edx
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   173
        and ecx, BYTE 3
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   174
        jz .L4
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   175
.L3:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   176
        mov al, [esi]
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   177
        mov bh, [esi+1]
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   178
        mov ah, [esi+2]
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   179
        shr al, 3
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   180
        and eax, 0F81Fh            ; BYTE?
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   181
        shr ebx, 5
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   182
        and ebx, 07E0h             ; BYTE?
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   183
        add eax, ebx
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   184
        mov [edi], al
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   185
        mov [edi+1], ah
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   186
        add esi, BYTE 4
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   187
        add edi, BYTE 2
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   188
        dec ecx
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   189
        jnz .L3
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   190
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   191
.L4:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   192
	jmp _mmxreturn
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   193
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   194
	
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   195
_ConvertMMXpII32_16BGR565:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   196
1230
88c2d6aed428 From Mike Frysinger and/or Gentoo:
Ryan C. Gordon <icculus@icculus.org>
parents: 1199
diff changeset
   197
        load_immq mm5, mmx32_rgb565_r
88c2d6aed428 From Mike Frysinger and/or Gentoo:
Ryan C. Gordon <icculus@icculus.org>
parents: 1199
diff changeset
   198
        load_immq mm6, mmx32_rgb565_g
88c2d6aed428 From Mike Frysinger and/or Gentoo:
Ryan C. Gordon <icculus@icculus.org>
parents: 1199
diff changeset
   199
        load_immq mm7, mmx32_rgb565_b
88c2d6aed428 From Mike Frysinger and/or Gentoo:
Ryan C. Gordon <icculus@icculus.org>
parents: 1199
diff changeset
   200
        CLEANUP_IMMQ_LOADS(3)
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   201
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   202
        mov edx, ecx
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   203
        shr ecx, 2
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   204
        jnz .L1
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   205
        jmp .L2
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   206
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   207
.L1:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   208
        movq mm0, [esi]                 ; a r g b
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   209
        movq mm1, mm0                   ; a r g b
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   210
        pand mm0, mm6                   ; 0 0 g 0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   211
        movq mm3, mm1                   ; a r g b
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   212
        pand mm1, mm5                   ; 0 r 0 0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   213
        pand mm3, mm7                   ; 0 0 0 b
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   214
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   215
        psllq mm3, 16                   ; 0 b 0 0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   216
        psrld mm1, 14                   ; 0 0 000000rr rrr00000
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   217
        por mm0, mm1                    ; 0 0 ggggggrr rrr00000
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   218
        psrld mm0, 5                    ; 0 0 00000ggg gggrrrrr
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   219
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   220
        movq mm4, [esi+8]               ; a r g b
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   221
        movq mm2, mm4                   ; a r g b
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   222
        pand mm4, mm6                   ; 0 0 g 0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   223
        movq mm1, mm2                   ; a r g b
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   224
        pand mm2, mm5                   ; 0 r 0 0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   225
        pand mm1, mm7                   ; 0 0 0 b
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   226
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   227
        psllq mm1, 16                   ; 0 b 0 0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   228
        psrld mm2, 14                   ; 0 0 000000rr rrr00000
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   229
        por mm4, mm2                    ; 0 0 ggggggrr rrr00000
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   230
        psrld mm4, 5                    ; 0 0 00000ggg gggrrrrr
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   231
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   232
        packuswb mm3, mm1               ; BBBBB000 00000000 bbbbb000 00000000
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   233
        packssdw mm0, mm4               ; 00000GGG GGGRRRRR 00000GGG GGGRRRRR
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   234
        por mm0, mm3                    ; BBBBBGGG GGGRRRRR bbbbbggg gggrrrrr
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   235
        movq [edi], mm0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   236
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   237
        add esi, BYTE 16
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   238
        add edi, BYTE 8
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   239
        dec ecx
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   240
        jnz .L1
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   241
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   242
.L2:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   243
        and edx, BYTE 3
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   244
        jz .L4
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   245
.L3:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   246
        mov al, [esi+2]
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   247
        mov bh, [esi+1]
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   248
        mov ah, [esi]
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   249
        shr al, 3
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   250
        and eax, 0F81Fh                    ; BYTE ?
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   251
        shr ebx, 5
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   252
        and ebx, 07E0h                     ; BYTE ?
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   253
        add eax, ebx
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   254
        mov [edi], al
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   255
        mov [edi+1], ah
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   256
        add esi, BYTE 4
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   257
        add edi, BYTE 2
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   258
        dec edx
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   259
        jnz .L3
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   260
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   261
.L4:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   262
        jmp _mmxreturn
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   263
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   264
_ConvertMMXpII32_16BGR555:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   265
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   266
        ; the 16BGR555 converter is identical to the RGB555 one,
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   267
        ; except it uses a different multiplier for the pmaddwd
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   268
        ; instruction.  cool huh.
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   269
1230
88c2d6aed428 From Mike Frysinger and/or Gentoo:
Ryan C. Gordon <icculus@icculus.org>
parents: 1199
diff changeset
   270
        load_immq mm7, mmx32_bgr555_mul
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   271
        jmp _convert_bgr555_cheat
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   272
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   273
; This is the same as the Intel version.. they obviously went to
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   274
; much more trouble to expand/coil the loop than I did, so theirs
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   275
; would almost certainly be faster, even if only a little.
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   276
; I did rename 'mmx32_rgb555_add' to 'mmx32_rgb555_mul', which is
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   277
; (I think) a more accurate name..
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   278
_ConvertMMXpII32_16RGB555:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   279
1230
88c2d6aed428 From Mike Frysinger and/or Gentoo:
Ryan C. Gordon <icculus@icculus.org>
parents: 1199
diff changeset
   280
	load_immq mm7, mmx32_rgb555_mul
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   281
_convert_bgr555_cheat:
1230
88c2d6aed428 From Mike Frysinger and/or Gentoo:
Ryan C. Gordon <icculus@icculus.org>
parents: 1199
diff changeset
   282
	load_immq mm6, mmx32_rgb555_g
88c2d6aed428 From Mike Frysinger and/or Gentoo:
Ryan C. Gordon <icculus@icculus.org>
parents: 1199
diff changeset
   283
	CLEANUP_IMMQ_LOADS(2)
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   284
        
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   285
	mov edx,ecx		           ; Save ecx 
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   286
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   287
        and ecx,BYTE 0fffffff8h            ; clear lower three bits
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   288
	jnz .L_OK
289
77b6110c797d Fixed "short jump out of range" error in MMX code
Sam Lantinga <slouken@libsdl.org>
parents: 0
diff changeset
   289
        jmp near .L2 
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   290
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   291
.L_OK:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   292
	
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   293
	movq mm2,[esi+8]
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   294
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   295
	movq mm0,[esi]
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   296
	movq mm3,mm2
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   297
1230
88c2d6aed428 From Mike Frysinger and/or Gentoo:
Ryan C. Gordon <icculus@icculus.org>
parents: 1199
diff changeset
   298
	pand_immq mm3, mmx32_rgb555_rb
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   299
	movq mm1,mm0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   300
1230
88c2d6aed428 From Mike Frysinger and/or Gentoo:
Ryan C. Gordon <icculus@icculus.org>
parents: 1199
diff changeset
   301
	pand_immq mm1, mmx32_rgb555_rb
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   302
	pmaddwd mm3,mm7
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   303
1230
88c2d6aed428 From Mike Frysinger and/or Gentoo:
Ryan C. Gordon <icculus@icculus.org>
parents: 1199
diff changeset
   304
	CLEANUP_IMMQ_LOADS(2)
88c2d6aed428 From Mike Frysinger and/or Gentoo:
Ryan C. Gordon <icculus@icculus.org>
parents: 1199
diff changeset
   305
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   306
	pmaddwd mm1,mm7
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   307
	pand mm2,mm6
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   308
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   309
.L1:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   310
	movq mm4,[esi+24]
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   311
	pand mm0,mm6
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   312
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   313
	movq mm5,[esi+16]
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   314
	por mm3,mm2
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   315
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   316
	psrld mm3,6
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   317
	por mm1,mm0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   318
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   319
	movq mm0,mm4
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   320
	psrld mm1,6
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   321
1230
88c2d6aed428 From Mike Frysinger and/or Gentoo:
Ryan C. Gordon <icculus@icculus.org>
parents: 1199
diff changeset
   322
	pand_immq mm0, mmx32_rgb555_rb
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   323
	packssdw mm1,mm3
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   324
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   325
	movq mm3,mm5
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   326
	pmaddwd mm0,mm7
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   327
1230
88c2d6aed428 From Mike Frysinger and/or Gentoo:
Ryan C. Gordon <icculus@icculus.org>
parents: 1199
diff changeset
   328
	pand_immq mm3, mmx32_rgb555_rb
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   329
	pand mm4,mm6
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   330
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   331
	movq [edi],mm1			
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   332
	pmaddwd mm3,mm7
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   333
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   334
        add esi,BYTE 32
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   335
	por mm4,mm0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   336
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   337
	pand mm5,mm6
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   338
	psrld mm4,6
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   339
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   340
	movq mm2,[esi+8]
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   341
	por mm5,mm3
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   342
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   343
	movq mm0,[esi]
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   344
	psrld mm5,6
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   345
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   346
	movq mm3,mm2
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   347
	movq mm1,mm0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   348
1230
88c2d6aed428 From Mike Frysinger and/or Gentoo:
Ryan C. Gordon <icculus@icculus.org>
parents: 1199
diff changeset
   349
	pand_immq mm3, mmx32_rgb555_rb
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   350
	packssdw mm5,mm4
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   351
1230
88c2d6aed428 From Mike Frysinger and/or Gentoo:
Ryan C. Gordon <icculus@icculus.org>
parents: 1199
diff changeset
   352
	pand_immq mm1, mmx32_rgb555_rb
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   353
	pand mm2,mm6
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   354
1230
88c2d6aed428 From Mike Frysinger and/or Gentoo:
Ryan C. Gordon <icculus@icculus.org>
parents: 1199
diff changeset
   355
	CLEANUP_IMMQ_LOADS(4)
88c2d6aed428 From Mike Frysinger and/or Gentoo:
Ryan C. Gordon <icculus@icculus.org>
parents: 1199
diff changeset
   356
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   357
	movq [edi+8],mm5
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   358
	pmaddwd mm3,mm7
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   359
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   360
	pmaddwd mm1,mm7
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   361
        add edi,BYTE 16
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   362
	
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   363
        sub ecx,BYTE 8
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   364
	jz .L2
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   365
        jmp .L1
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   366
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   367
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   368
.L2:	
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   369
	mov ecx,edx
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   370
	
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   371
        and ecx,BYTE 7
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   372
	jz .L4
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   373
	
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   374
.L3:	
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   375
	mov ebx,[esi]
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   376
        add esi,BYTE 4
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   377
	
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   378
        mov eax,ebx
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   379
        mov edx,ebx
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   380
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   381
        shr eax,3
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   382
        shr edx,6
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   383
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   384
        and eax,BYTE 0000000000011111b
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   385
        and edx,     0000001111100000b
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   386
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   387
        shr ebx,9
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   388
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   389
        or eax,edx
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   390
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   391
        and ebx,     0111110000000000b
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   392
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   393
        or eax,ebx
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   394
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   395
        mov [edi],ax
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   396
        add edi,BYTE 2
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   397
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   398
	dec ecx
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   399
	jnz .L3	
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   400
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   401
.L4:		
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   402
	jmp _mmxreturn
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
   403
1199
2d6dc7de1145 From: Mike Frysinger <vapier@gentoo.org>
Ryan C. Gordon <icculus@icculus.org>
parents: 1166
diff changeset
   404
%ifidn __OUTPUT_FORMAT__,elf
2d6dc7de1145 From: Mike Frysinger <vapier@gentoo.org>
Ryan C. Gordon <icculus@icculus.org>
parents: 1166
diff changeset
   405
section .note.GNU-stack noalloc noexec nowrite progbits
2d6dc7de1145 From: Mike Frysinger <vapier@gentoo.org>
Ryan C. Gordon <icculus@icculus.org>
parents: 1166
diff changeset
   406
%endif