0,0 → 1,114 |
/* |
* Written by José Fonseca <j_r_fonseca@yahoo.co.uk> |
*/ |
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/* |
* void _mesa_mmx_blend( struct gl_context *ctx, |
* GLuint n, |
* const GLubyte mask[], |
* GLchan rgba[][4], |
* CONST GLchan dest[][4] ) |
* |
*/ |
ALIGNTEXT16 |
GLOBL GLNAME( TAG(_mesa_mmx_blend) ) |
HIDDEN( TAG(_mesa_mmx_blend) ) |
GLNAME( TAG(_mesa_mmx_blend) ): |
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PUSH_L ( EBP ) |
MOV_L ( ESP, EBP ) |
PUSH_L ( ESI ) |
PUSH_L ( EDI ) |
PUSH_L ( EBX ) |
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MOV_L ( REGOFF(12, EBP), ECX ) /* n */ |
CMP_L ( CONST(0), ECX) |
JE ( LLTAG(GMB_return) ) |
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MOV_L ( REGOFF(16, EBP), EBX ) /* mask */ |
MOV_L ( REGOFF(20, EBP), EDI ) /* rgba */ |
MOV_L ( REGOFF(24, EBP), ESI ) /* dest */ |
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INIT |
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TEST_L ( CONST(4), EDI ) /* align rgba on an 8-byte boundary */ |
JZ ( LLTAG(GMB_align_end) ) |
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CMP_B ( CONST(0), REGIND(EBX) ) /* *mask == 0 */ |
JE ( LLTAG(GMB_align_continue) ) |
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/* runin */ |
#define ONE(x) x |
#define TWO(x) |
MAIN ( EDI, ESI ) |
#undef ONE |
#undef TWO |
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LLTAG(GMB_align_continue): |
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DEC_L ( ECX ) /* n -= 1 */ |
INC_L ( EBX ) /* mask += 1 */ |
ADD_L ( CONST(4), EDI ) /* rgba += 1 */ |
ADD_L ( CONST(4), ESI ) /* dest += 1 */ |
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LLTAG(GMB_align_end): |
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CMP_L ( CONST(2), ECX) |
JB ( LLTAG(GMB_loop_end) ) |
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ALIGNTEXT16 |
LLTAG(GMB_loop_begin): |
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CMP_W ( CONST(0), REGIND(EBX) ) /* *mask == 0 && *(mask + 1) == 0 */ |
JE ( LLTAG(GMB_loop_continue) ) |
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/* main loop */ |
#define ONE(x) |
#define TWO(x) x |
MAIN ( EDI, ESI ) |
#undef ONE |
#undef TWO |
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LLTAG(GMB_loop_continue): |
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DEC_L ( ECX ) |
DEC_L ( ECX ) /* n -= 2 */ |
ADD_L ( CONST(2), EBX ) /* mask += 2 */ |
ADD_L ( CONST(8), EDI ) /* rgba += 2 */ |
ADD_L ( CONST(8), ESI ) /* dest += 2 */ |
CMP_L ( CONST(2), ECX ) |
JAE ( LLTAG(GMB_loop_begin) ) |
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LLTAG(GMB_loop_end): |
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CMP_L ( CONST(1), ECX ) |
JB ( LLTAG(GMB_done) ) |
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CMP_B ( CONST(0), REGIND(EBX) ) /* *mask == 0 */ |
JE ( LLTAG(GMB_done) ) |
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/* runout */ |
#define ONE(x) x |
#define TWO(x) |
MAIN ( EDI, ESI ) |
#undef ONE |
#undef TWO |
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LLTAG(GMB_done): |
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EMMS |
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LLTAG(GMB_return): |
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POP_L ( EBX ) |
POP_L ( EDI ) |
POP_L ( ESI ) |
MOV_L ( EBP, ESP ) |
POP_L ( EBP ) |
RET |
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#undef TAG |
#undef LLTAG |
#undef INIT |
#undef MAIN |