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[/] [openrisc/] [trunk/] [gnu-dev/] [or1k-gcc/] [gcc/] [testsuite/] [gcc.target/] [i386/] [asm-2.c] - Rev 848
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/* PR opt/13862 */ /* { dg-do compile } */ /* { dg-require-effective-target ilp32 } */ /* { dg-options "-O" } */ typedef struct _fame_syntax_t_ { } fame_syntax_t; typedef struct _fame_bitbuffer_t_ { unsigned char * base; unsigned char * data; unsigned long shift; } fame_bitbuffer_t; #define fast_bitbuffer_write(data, shift, c, l) \ { \ int d; \ \ asm("add %1, %%ecx\n" /* ecx = shift + length */ \ "shrd %%cl, %2, %3\n" /* adjust code to fit in */ \ "shr %%cl, %2\n" /* adjust code to fit in */ \ "mov %%ecx, %1\n" /* shift += length */ \ "bswap %2\n" /* reverse byte order of code */ \ "shr $5, %%ecx\n" /* get dword increment */ \ "or %2, (%0)\n" /* put first 32 bits */ \ "bswap %3\n" /* reverse byte order of code */ \ "lea (%0, %%ecx, 4), %0\n" /* data += (ecx>32) */ \ "andl $31, %1\n" /* mask shift */ \ "orl %3, (%0)\n" /* put last 32 bits */ \ : "=r"(data), "=r"(shift), "=a"(d), "=d"(d), "=c"(d) \ : "0"(data), "1"(shift), "2"((unsigned long) c), "3"(0), \ "c"((unsigned long) l) \ : "memory"); \ } #define bitbuffer_write(bb, c, l) \ fast_bitbuffer_write((bb)->data, (bb)->shift, c, l) typedef enum { frame_type_I, frame_type_P } frame_type_t; typedef struct _fame_syntax_mpeg1_t_ { fame_bitbuffer_t buffer; frame_type_t frame_type; } fame_syntax_mpeg1_t; #define FAME_SYNTAX_MPEG1(x) ((fame_syntax_mpeg1_t *) x) void mpeg1_start_picture(fame_syntax_t *syntax) { fame_syntax_mpeg1_t *syntax_mpeg1 = FAME_SYNTAX_MPEG1(syntax); bitbuffer_write(&syntax_mpeg1->buffer, 0xFFFF, 16); switch(syntax_mpeg1->frame_type) { case frame_type_I: bitbuffer_write(&syntax_mpeg1->buffer, 0, 1); break; case frame_type_P: bitbuffer_write(&syntax_mpeg1->buffer, 0, 1); break; } }
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