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diff --git a/ffmpeg/libavcodec/x86/cabac.h b/ffmpeg/libavcodec/x86/cabac.h
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+/*
+ * Copyright (c) 2003 Michael Niedermayer <michaelni@gmx.at>
+ *
+ * This file is part of Libav.
+ *
+ * Libav is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * Libav is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with Libav; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#ifndef AVCODEC_X86_CABAC_H
+#define AVCODEC_X86_CABAC_H
+
+#include "libavcodec/cabac.h"
+#include "libavutil/attributes.h"
+#include "libavutil/x86/asm.h"
+#include "libavutil/internal.h"
+#include "config.h"
+
+#if HAVE_INLINE_ASM
+
+#ifdef BROKEN_RELOCATIONS
+#define TABLES_ARG , "r"(tables)
+
+#if HAVE_FAST_CMOV
+#define BRANCHLESS_GET_CABAC_UPDATE(ret, retq, low, range, tmp) \
+ "cmp "low" , "tmp" \n\t"\
+ "cmova %%ecx , "range" \n\t"\
+ "sbb %%rcx , %%rcx \n\t"\
+ "and %%ecx , "tmp" \n\t"\
+ "xor %%rcx , "retq" \n\t"\
+ "sub "tmp" , "low" \n\t"
+#else /* HAVE_FAST_CMOV */
+#define BRANCHLESS_GET_CABAC_UPDATE(ret, retq, low, range, tmp) \
+/* P4 Prescott has crappy cmov,sbb,64bit shift so avoid them */ \
+ "sub "low" , "tmp" \n\t"\
+ "sar $31 , "tmp" \n\t"\
+ "sub %%ecx , "range" \n\t"\
+ "and "tmp" , "range" \n\t"\
+ "add %%ecx , "range" \n\t"\
+ "shl $17 , %%ecx \n\t"\
+ "and "tmp" , %%ecx \n\t"\
+ "sub %%ecx , "low" \n\t"\
+ "xor "tmp" , "ret" \n\t"\
+ "movslq "ret" , "retq" \n\t"
+#endif /* HAVE_FAST_CMOV */
+
+#define BRANCHLESS_GET_CABAC(ret, retq, statep, low, lowword, range, rangeq, tmp, tmpbyte, byte, end, norm_off, lps_off, mlps_off, tables) \
+ "movzbl "statep" , "ret" \n\t"\
+ "mov "range" , "tmp" \n\t"\
+ "and $0xC0 , "range" \n\t"\
+ "lea ("ret", "range", 2), %%ecx \n\t"\
+ "movzbl "lps_off"("tables", %%rcx), "range" \n\t"\
+ "sub "range" , "tmp" \n\t"\
+ "mov "tmp" , %%ecx \n\t"\
+ "shl $17 , "tmp" \n\t"\
+ BRANCHLESS_GET_CABAC_UPDATE(ret, retq, low, range, tmp) \
+ "movzbl "norm_off"("tables", "rangeq"), %%ecx \n\t"\
+ "shl %%cl , "range" \n\t"\
+ "movzbl "mlps_off"+128("tables", "retq"), "tmp" \n\t"\
+ "shl %%cl , "low" \n\t"\
+ "mov "tmpbyte" , "statep" \n\t"\
+ "test "lowword" , "lowword" \n\t"\
+ "jnz 2f \n\t"\
+ "mov "byte" , %%"REG_c" \n\t"\
+ "add"OPSIZE" $2 , "byte" \n\t"\
+ "movzwl (%%"REG_c") , "tmp" \n\t"\
+ "lea -1("low") , %%ecx \n\t"\
+ "xor "low" , %%ecx \n\t"\
+ "shr $15 , %%ecx \n\t"\
+ "bswap "tmp" \n\t"\
+ "shr $15 , "tmp" \n\t"\
+ "movzbl "norm_off"("tables", %%rcx), %%ecx \n\t"\
+ "sub $0xFFFF , "tmp" \n\t"\
+ "neg %%ecx \n\t"\
+ "add $7 , %%ecx \n\t"\
+ "shl %%cl , "tmp" \n\t"\
+ "add "tmp" , "low" \n\t"\
+ "2: \n\t"
+
+#else /* BROKEN_RELOCATIONS */
+#define TABLES_ARG
+#define RIP_ARG
+
+#if HAVE_FAST_CMOV
+#define BRANCHLESS_GET_CABAC_UPDATE(ret, low, range, tmp)\
+ "mov "tmp" , %%ecx \n\t"\
+ "shl $17 , "tmp" \n\t"\
+ "cmp "low" , "tmp" \n\t"\
+ "cmova %%ecx , "range" \n\t"\
+ "sbb %%ecx , %%ecx \n\t"\
+ "and %%ecx , "tmp" \n\t"\
+ "xor %%ecx , "ret" \n\t"\
+ "sub "tmp" , "low" \n\t"
+#else /* HAVE_FAST_CMOV */
+#define BRANCHLESS_GET_CABAC_UPDATE(ret, low, range, tmp)\
+ "mov "tmp" , %%ecx \n\t"\
+ "shl $17 , "tmp" \n\t"\
+ "sub "low" , "tmp" \n\t"\
+ "sar $31 , "tmp" \n\t" /*lps_mask*/\
+ "sub %%ecx , "range" \n\t" /*RangeLPS - range*/\
+ "and "tmp" , "range" \n\t" /*(RangeLPS - range)&lps_mask*/\
+ "add %%ecx , "range" \n\t" /*new range*/\
+ "shl $17 , %%ecx \n\t"\
+ "and "tmp" , %%ecx \n\t"\
+ "sub %%ecx , "low" \n\t"\
+ "xor "tmp" , "ret" \n\t"
+#endif /* HAVE_FAST_CMOV */
+
+#define BRANCHLESS_GET_CABAC(ret, retq, statep, low, lowword, range, rangeq, tmp, tmpbyte, byte, end, norm_off, lps_off, mlps_off, tables) \
+ "movzbl "statep" , "ret" \n\t"\
+ "mov "range" , "tmp" \n\t"\
+ "and $0xC0 , "range" \n\t"\
+ "movzbl "MANGLE(ff_h264_cabac_tables)"+"lps_off"("ret", "range", 2), "range" \n\t"\
+ "sub "range" , "tmp" \n\t"\
+ BRANCHLESS_GET_CABAC_UPDATE(ret, low, range, tmp) \
+ "movzbl "MANGLE(ff_h264_cabac_tables)"+"norm_off"("range"), %%ecx \n\t"\
+ "shl %%cl , "range" \n\t"\
+ "movzbl "MANGLE(ff_h264_cabac_tables)"+"mlps_off"+128("ret"), "tmp" \n\t"\
+ "shl %%cl , "low" \n\t"\
+ "mov "tmpbyte" , "statep" \n\t"\
+ "test "lowword" , "lowword" \n\t"\
+ " jnz 2f \n\t"\
+ "mov "byte" , %%"REG_c" \n\t"\
+ "add"OPSIZE" $2 , "byte" \n\t"\
+ "movzwl (%%"REG_c") , "tmp" \n\t"\
+ "lea -1("low") , %%ecx \n\t"\
+ "xor "low" , %%ecx \n\t"\
+ "shr $15 , %%ecx \n\t"\
+ "bswap "tmp" \n\t"\
+ "shr $15 , "tmp" \n\t"\
+ "movzbl "MANGLE(ff_h264_cabac_tables)"+"norm_off"(%%ecx), %%ecx \n\t"\
+ "sub $0xFFFF , "tmp" \n\t"\
+ "neg %%ecx \n\t"\
+ "add $7 , %%ecx \n\t"\
+ "shl %%cl , "tmp" \n\t"\
+ "add "tmp" , "low" \n\t"\
+ "2: \n\t"
+
+#endif /* BROKEN_RELOCATIONS */
+
+
+#if HAVE_7REGS && !(defined(__i386) && defined(__clang__) && (__clang_major__<2 || (__clang_major__==2 && __clang_minor__<10)))\
+ && !( !defined(__clang__) && defined(__llvm__) && __GNUC__==4 && __GNUC_MINOR__==2 && __GNUC_PATCHLEVEL__<=1)
+#define get_cabac_inline get_cabac_inline_x86
+static av_always_inline int get_cabac_inline_x86(CABACContext *c,
+ uint8_t *const state)
+{
+ int bit, tmp;
+#ifdef BROKEN_RELOCATIONS
+ void *tables;
+
+ __asm__ volatile(
+ "lea "MANGLE(ff_h264_cabac_tables)", %0 \n\t"
+ : "=&r"(tables)
+ );
+#endif
+
+ __asm__ volatile(
+ BRANCHLESS_GET_CABAC("%0", "%q0", "(%4)", "%1", "%w1",
+ "%2", "%q2", "%3", "%b3",
+ "%c6(%5)", "%c7(%5)",
+ AV_STRINGIFY(H264_NORM_SHIFT_OFFSET),
+ AV_STRINGIFY(H264_LPS_RANGE_OFFSET),
+ AV_STRINGIFY(H264_MLPS_STATE_OFFSET),
+ "%8")
+ : "=&r"(bit), "=&r"(c->low), "=&r"(c->range), "=&q"(tmp)
+ : "r"(state), "r"(c),
+ "i"(offsetof(CABACContext, bytestream)),
+ "i"(offsetof(CABACContext, bytestream_end))
+ TABLES_ARG
+ ,"1"(c->low), "2"(c->range)
+ : "%"REG_c, "memory"
+ );
+ return bit & 1;
+}
+#endif /* HAVE_7REGS */
+
+#define get_cabac_bypass_sign get_cabac_bypass_sign_x86
+static av_always_inline int get_cabac_bypass_sign_x86(CABACContext *c, int val)
+{
+ x86_reg tmp;
+ __asm__ volatile(
+ "movl %c6(%2), %k1 \n\t"
+ "movl %c3(%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 %c4(%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, %c4(%2) \n\t"
+ "1: \n\t"
+ "movl %%eax, %c3(%2) \n\t"
+
+ : "+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;
+}
+
+#endif /* HAVE_INLINE_ASM */
+#endif /* AVCODEC_X86_CABAC_H */
generated by cgit v1.2.3 (git 2.39.1) at 2025-12-06 17:39:06 +0000