diff options
Diffstat (limited to 'libavcodec/x86/cabac.h')
| -rw-r--r-- | libavcodec/x86/cabac.h | 78 |
1 files changed, 42 insertions, 36 deletions
diff --git a/libavcodec/x86/cabac.h b/libavcodec/x86/cabac.h index 2bb0be6374..0c4419b4f3 100644 --- a/libavcodec/x86/cabac.h +++ b/libavcodec/x86/cabac.h @@ -27,7 +27,7 @@ #include "config.h" #if HAVE_FAST_CMOV -#define BRANCHLESS_GET_CABAC_UPDATE(ret, statep, low, lowword, range, tmp)\ +#define BRANCHLESS_GET_CABAC_UPDATE(ret, statep, low, range, tmp)\ "mov "tmp" , %%ecx \n\t"\ "shl $17 , "tmp" \n\t"\ "cmp "low" , "tmp" \n\t"\ @@ -37,7 +37,7 @@ "xor %%ecx , "ret" \n\t"\ "sub "tmp" , "low" \n\t" #else /* HAVE_FAST_CMOV */ -#define BRANCHLESS_GET_CABAC_UPDATE(ret, statep, low, lowword, range, tmp)\ +#define BRANCHLESS_GET_CABAC_UPDATE(ret, statep, low, range, tmp)\ "mov "tmp" , %%ecx \n\t"\ "shl $17 , "tmp" \n\t"\ "sub "low" , "tmp" \n\t"\ @@ -51,20 +51,20 @@ "xor "tmp" , "ret" \n\t" #endif /* HAVE_FAST_CMOV */ -#define BRANCHLESS_GET_CABAC(ret, statep, low, lowword, range, tmp, tmpbyte, byte) \ +#define BRANCHLESS_GET_CABAC(ret, statep, low, lowword, range, tmp, tmpbyte, byte, end) \ "movzbl "statep" , "ret" \n\t"\ "mov "range" , "tmp" \n\t"\ "and $0xC0 , "range" \n\t"\ "movzbl "MANGLE(ff_h264_lps_range)"("ret", "range", 2), "range" \n\t"\ "sub "range" , "tmp" \n\t"\ - BRANCHLESS_GET_CABAC_UPDATE(ret, statep, low, lowword, range, tmp) \ + BRANCHLESS_GET_CABAC_UPDATE(ret, statep, low, range, tmp) \ "movzbl " MANGLE(ff_h264_norm_shift) "("range"), %%ecx \n\t"\ "shl %%cl , "range" \n\t"\ "movzbl "MANGLE(ff_h264_mlps_state)"+128("ret"), "tmp" \n\t"\ "shl %%cl , "low" \n\t"\ "mov "tmpbyte" , "statep" \n\t"\ "test "lowword" , "lowword" \n\t"\ - " jnz 1f \n\t"\ + " jnz 2f \n\t"\ "mov "byte" , %%"REG_c" \n\t"\ "add"OPSIZE" $2 , "byte" \n\t"\ "movzwl (%%"REG_c") , "tmp" \n\t"\ @@ -79,7 +79,7 @@ "add $7 , %%ecx \n\t"\ "shl %%cl , "tmp" \n\t"\ "add "tmp" , "low" \n\t"\ - "1: \n\t" + "2: \n\t" #if HAVE_7REGS && !defined(BROKEN_RELOCATIONS) && !(defined(__i386) && defined(__clang__) && (__clang_major__<2 || (__clang_major__==2 && __clang_minor__<10)))\ @@ -91,11 +91,13 @@ static av_always_inline int get_cabac_inline_x86(CABACContext *c, int bit, tmp; __asm__ volatile( - BRANCHLESS_GET_CABAC("%0", "(%5)", "%1", "%w1", "%2", - "%3", "%b3", "%4") - :"=&r"(bit), "+&r"(c->low), "+&r"(c->range), "=&q"(tmp), - "+m"(c->bytestream) - :"r"(state) + BRANCHLESS_GET_CABAC("%0", "(%4)", "%1", "%w1", + "%2", "%3", "%b3", + "%a6(%5)", "%a7(%5)") + : "=&r"(bit), "+&r"(c->low), "+&r"(c->range), "=&q"(tmp) + : "r"(state), "r"(c), + "i"(offsetof(CABACContext, bytestream)), + "i"(offsetof(CABACContext, bytestream_end)) : "%"REG_c, "memory" ); return bit & 1; @@ -107,32 +109,36 @@ static av_always_inline int get_cabac_bypass_sign_x86(CABACContext *c, int val) { x86_reg tmp; __asm__ volatile( - "movl %4, %k1 \n\t" - "movl %2, %%eax \n\t" - "shl $17, %k1 \n\t" - "add %%eax, %%eax \n\t" - "sub %k1, %%eax \n\t" - "cltd \n\t" - "and %%edx, %k1 \n\t" - "add %k1, %%eax \n\t" - "xor %%edx, %%ecx \n\t" - "sub %%edx, %%ecx \n\t" - "test %%ax, %%ax \n\t" - " jnz 1f \n\t" - "mov %3, %1 \n\t" - "subl $0xFFFF, %%eax \n\t" - "movzwl (%1), %%edx \n\t" - "bswap %%edx \n\t" - "shrl $15, %%edx \n\t" - "add $2, %1 \n\t" - "addl %%edx, %%eax \n\t" - "mov %1, %3 \n\t" - "1: \n\t" - "movl %%eax, %2 \n\t" + "movl %a6(%2), %k1 \n\t" + "movl %a3(%2), %%eax \n\t" + "shl $17, %k1 \n\t" + "add %%eax, %%eax \n\t" + "sub %k1, %%eax \n\t" + "cltd \n\t" + "and %%edx, %k1 \n\t" + "add %k1, %%eax \n\t" + "xor %%edx, %%ecx \n\t" + "sub %%edx, %%ecx \n\t" + "test %%ax, %%ax \n\t" + "jnz 1f \n\t" + "mov %a4(%2), %1 \n\t" + "subl $0xFFFF, %%eax \n\t" + "movzwl (%1), %%edx \n\t" + "bswap %%edx \n\t" + "shrl $15, %%edx \n\t" + "add $2, %1 \n\t" + "addl %%edx, %%eax \n\t" + "mov %1, %a4(%2) \n\t" + "1: \n\t" + "movl %%eax, %a3(%2) \n\t" - :"+c"(val), "=&r"(tmp), "+m"(c->low), "+m"(c->bytestream) - :"m"(c->range) - : "%eax", "%edx" + : "+c"(val), "=&r"(tmp) + : "r"(c), + "i"(offsetof(CABACContext, low)), + "i"(offsetof(CABACContext, bytestream)), + "i"(offsetof(CABACContext, bytestream_end)), + "i"(offsetof(CABACContext, range)) + : "%eax", "%edx", "memory" ); return val; } |