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author | upstream source tree <ports@midipix.org> | 2015-03-15 20:14:05 -0400 |
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committer | upstream source tree <ports@midipix.org> | 2015-03-15 20:14:05 -0400 |
commit | 554fd8c5195424bdbcabf5de30fdc183aba391bd (patch) | |
tree | 976dc5ab7fddf506dadce60ae936f43f58787092 /gcc/testsuite/gcc.target/i386/asm-2.c | |
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Diffstat (limited to 'gcc/testsuite/gcc.target/i386/asm-2.c')
-rw-r--r-- | gcc/testsuite/gcc.target/i386/asm-2.c | 62 |
1 files changed, 62 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.target/i386/asm-2.c b/gcc/testsuite/gcc.target/i386/asm-2.c new file mode 100644 index 000000000..09a545517 --- /dev/null +++ b/gcc/testsuite/gcc.target/i386/asm-2.c @@ -0,0 +1,62 @@ +/* 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; + } +} |