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-rw-r--r--src/unix/linux_common.c347
1 files changed, 0 insertions, 347 deletions
diff --git a/src/unix/linux_common.c b/src/unix/linux_common.c
deleted file mode 100644
index d7f31189..00000000
--- a/src/unix/linux_common.c
+++ /dev/null
@@ -1,347 +0,0 @@
-#if 0 // not used anymore
-/*
-===========================================================================
-Copyright (C) 1999-2005 Id Software, Inc.
-Copyright (C) 2000-2006 Tim Angus
-
-This file is part of Tremulous.
-
-Tremulous is free software; you can redistribute it
-and/or modify it under the terms of the GNU General Public License as
-published by the Free Software Foundation; either version 2 of the License,
-or (at your option) any later version.
-
-Tremulous 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 General Public License for more details.
-
-You should have received a copy of the GNU General Public License
-along with Tremulous; if not, write to the Free Software
-Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
-===========================================================================
-*/
-/**
- * GAS syntax equivalents of the MSVC asm memory calls in common.c
- *
- * The following changes have been made to the asm:
- * 1. Registers are loaded by the inline asm arguments when possible
- * 2. Labels have been changed to local label format (0,1,etc.) to allow inlining
- *
- * HISTORY:
- * AH - Created on 08 Dec 2000
- */
-
-#include <unistd.h> // AH - for size_t
-#include <string.h>
-
-// bk001207 - we need something under Linux, too. Mac?
-#if 1 // defined(C_ONLY) // bk010102 - dedicated?
-void Com_Memcpy (void* dest, const void* src, const size_t count) {
- memcpy(dest, src, count);
-}
-
-void Com_Memset (void* dest, const int val, const size_t count) {
- memset(dest, val, count);
-}
-
-#else
-
-typedef enum {
- PRE_READ, // prefetch assuming that buffer is used for reading only
- PRE_WRITE, // prefetch assuming that buffer is used for writing only
- PRE_READ_WRITE // prefetch assuming that buffer is used for both reading and writing
-} e_prefetch;
-
-void Com_Prefetch (const void *s, const unsigned int bytes, e_prefetch type);
-
-void _copyDWord (unsigned int* dest, const unsigned int constant, const unsigned int count) {
- // MMX version not used on standard Pentium MMX
- // because the dword version is faster (with
- // proper destination prefetching)
- __asm__ __volatile__ (" \
- //mov eax,constant // eax = val \
- //mov edx,dest // dest \
- //mov ecx,count \
- movd %%eax, %%mm0 \
- punpckldq %%mm0, %%mm0 \
-\
- // ensure that destination is qword aligned \
-\
- testl $7, %%edx // qword padding?\
- jz 0f \
- movl %%eax, (%%edx) \
- decl %%ecx \
- addl $4, %%edx \
-\
-0: movl %%ecx, %%ebx \
- andl $0xfffffff0, %%ecx \
- jz 2f \
- jmp 1f \
- .align 16 \
-\
- // funny ordering here to avoid commands \
- // that cross 32-byte boundaries (the \
- // [edx+0] version has a special 3-byte opcode... \
-1: movq %%mm0, 8(%%edx) \
- movq %%mm0, 16(%%edx) \
- movq %%mm0, 24(%%edx) \
- movq %%mm0, 32(%%edx) \
- movq %%mm0, 40(%%edx) \
- movq %%mm0, 48(%%edx) \
- movq %%mm0, 56(%%edx) \
- movq %%mm0, (%%edx)\
- addl $64, %%edx \
- subl $16, %%ecx \
- jnz 1b \
-2: \
- movl %%ebx, %%ecx // ebx = cnt \
- andl $0xfffffff0, %%ecx // ecx = cnt&~15 \
- subl %%ecx, %%ebx \
- jz 6f \
- cmpl $8, %%ebx \
- jl 3f \
-\
- movq %%mm0, (%%edx) \
- movq %%mm0, 8(%%edx) \
- movq %%mm0, 16(%%edx) \
- movq %%mm0, 24(%%edx) \
- addl $32, %%edx \
- subl $8, %%ebx \
- jz 6f \
-\
-3: cmpl $4, %%ebx \
- jl 4f \
- \
- movq %%mm0, (%%edx) \
- movq %%mm0, 8(%%edx) \
- addl $16, %%edx \
- subl $4, %%ebx \
-\
-4: cmpl $2, %%ebx \
- jl 5f \
- movq %%mm0, (%%edx) \
- addl $8, %%edx \
- subl $2, %%ebx \
-\
-5: cmpl $1, %%ebx \
- jl 6f \
- movl %%eax, (%%edx) \
-6: \
- emms \
- "
- : : "a" (constant), "c" (count), "d" (dest)
- : "%ebx", "%edi", "%esi", "cc", "memory");
-}
-
-// optimized memory copy routine that handles all alignment
-// cases and block sizes efficiently
-void Com_Memcpy (void* dest, const void* src, const size_t count) {
- Com_Prefetch (src, count, PRE_READ);
- __asm__ __volatile__ (" \
- pushl %%edi \
- pushl %%esi \
- //mov ecx,count \
- cmpl $0, %%ecx // count = 0 check (just to be on the safe side) \
- je 6f \
- //mov edx,dest \
- movl %0, %%ebx \
- cmpl $32, %%ecx // padding only? \
- jl 1f \
-\
- movl %%ecx, %%edi \
- andl $0xfffffe00, %%edi // edi = count&~31 \
- subl $32, %%edi \
-\
- .align 16 \
-0: \
- movl (%%ebx, %%edi, 1), %%eax \
- movl 4(%%ebx, %%edi, 1), %%esi \
- movl %%eax, (%%edx, %%edi, 1) \
- movl %%esi, 4(%%edx, %%edi, 1) \
- movl 8(%%ebx, %%edi, 1), %%eax \
- movl 12(%%ebx, %%edi, 1), %%esi \
- movl %%eax, 8(%%edx, %%edi, 1) \
- movl %%esi, 12(%%edx, %%edi, 1) \
- movl 16(%%ebx, %%edi, 1), %%eax \
- movl 20(%%ebx, %%edi, 1), %%esi \
- movl %%eax, 16(%%edx, %%edi, 1) \
- movl %%esi, 20(%%edx, %%edi, 1) \
- movl 24(%%ebx, %%edi, 1), %%eax \
- movl 28(%%ebx, %%edi, 1), %%esi \
- movl %%eax, 24(%%edx, %%edi, 1) \
- movl %%esi, 28(%%edx, %%edi, 1) \
- subl $32, %%edi \
- jge 0b \
- \
- movl %%ecx, %%edi \
- andl $0xfffffe00, %%edi \
- addl %%edi, %%ebx // increase src pointer \
- addl %%edi, %%edx // increase dst pointer \
- andl $31, %%ecx // new count \
- jz 6f // if count = 0, get outta here \
-\
-1: \
- cmpl $16, %%ecx \
- jl 2f \
- movl (%%ebx), %%eax \
- movl %%eax, (%%edx) \
- movl 4(%%ebx), %%eax \
- movl %%eax, 4(%%edx) \
- movl 8(%%ebx), %%eax \
- movl %%eax, 8(%%edx) \
- movl 12(%%ebx), %%eax \
- movl %%eax, 12(%%edx) \
- subl $16, %%ecx \
- addl $16, %%ebx \
- addl $16, %%edx \
-2: \
- cmpl $8, %%ecx \
- jl 3f \
- movl (%%ebx), %%eax \
- movl %%eax, (%%edx) \
- movl 4(%%ebx), %%eax \
- subl $8, %%ecx \
- movl %%eax, 4(%%edx) \
- addl $8, %%ebx \
- addl $8, %%edx \
-3: \
- cmpl $4, %%ecx \
- jl 4f \
- movl (%%ebx), %%eax // here 4-7 bytes \
- addl $4, %%ebx \
- subl $4, %%ecx \
- movl %%eax, (%%edx) \
- addl $4, %%edx \
-4: // 0-3 remaining bytes \
- cmpl $2, %%ecx \
- jl 5f \
- movw (%%ebx), %%ax // two bytes \
- cmpl $3, %%ecx // less than 3? \
- movw %%ax, (%%edx) \
- jl 6f \
- movb 2(%%ebx), %%al // last byte \
- movb %%al, 2(%%edx) \
- jmp 6f \
-5: \
- cmpl $1, %%ecx \
- jl 6f \
- movb (%%ebx), %%al \
- movb %%al, (%%edx) \
-6: \
- popl %%esi \
- popl %%edi \
- "
- : : "m" (src), "d" (dest), "c" (count)
- : "%eax", "%ebx", "%edi", "%esi", "cc", "memory");
-}
-
-void Com_Memset (void* dest, const int val, const size_t count)
-{
- unsigned int fillval;
-
- if (count < 8)
- {
- __asm__ __volatile__ (" \
- //mov edx,dest \
- //mov eax, val \
- movb %%al, %%ah \
- movl %%eax, %%ebx \
- andl $0xffff, %%ebx \
- shll $16, %%eax \
- addl %%ebx, %%eax // eax now contains pattern \
- //mov ecx,count \
- cmpl $4, %%ecx \
- jl 0f \
- movl %%eax, (%%edx) // copy first dword \
- addl $4, %%edx \
- subl $4, %%ecx \
- 0: cmpl $2, %%ecx \
- jl 1f \
- movw %%ax, (%%edx) // copy 2 bytes \
- addl $2, %%edx \
- subl $2, %%ecx \
- 1: cmpl $0, %%ecx \
- je 2f \
- movb %%al, (%%edx) // copy single byte \
- 2: \
- "
- : : "d" (dest), "a" (val), "c" (count)
- : "%ebx", "%edi", "%esi", "cc", "memory");
-
- return;
- }
-
- fillval = val;
-
- fillval = fillval|(fillval<<8);
- fillval = fillval|(fillval<<16); // fill dword with 8-bit pattern
-
- _copyDWord ((unsigned int*)(dest),fillval, count/4);
-
- __asm__ __volatile__ (" // padding of 0-3 bytes \
- //mov ecx,count \
- movl %%ecx, %%eax \
- andl $3, %%ecx \
- jz 1f \
- andl $0xffffff00, %%eax \
- //mov ebx,dest \
- addl %%eax, %%edx \
- movl %0, %%eax \
- cmpl $2, %%ecx \
- jl 0f \
- movw %%ax, (%%edx) \
- cmpl $2, %%ecx \
- je 1f \
- movb %%al, 2(%%edx) \
- jmp 1f \
-0: \
- cmpl $0, %%ecx\
- je 1f\
- movb %%al, (%%edx)\
-1: \
- "
- : : "m" (fillval), "c" (count), "d" (dest)
- : "%eax", "%ebx", "%edi", "%esi", "cc", "memory");
-}
-
-void Com_Prefetch (const void *s, const unsigned int bytes, e_prefetch type)
-{
- // write buffer prefetching is performed only if
- // the processor benefits from it. Read and read/write
- // prefetching is always performed.
-
- switch (type)
- {
- case PRE_WRITE : break;
- case PRE_READ:
- case PRE_READ_WRITE:
-
- __asm__ __volatile__ ("\
- //mov ebx,s\
- //mov ecx,bytes\
- cmpl $4096, %%ecx // clamp to 4kB\
- jle 0f\
- movl $4096, %%ecx\
- 0:\
- addl $0x1f, %%ecx\
- shrl $5, %%ecx // number of cache lines\
- jz 2f\
- jmp 1f\
-\
- .align 16\
- 1: testb %%al, (%%edx)\
- addl $32, %%edx\
- decl %%ecx\
- jnz 1b\
- 2:\
- "
- : : "d" (s), "c" (bytes)
- : "%eax", "%ebx", "%edi", "%esi", "memory", "cc");
-
- break;
- }
-}
-
-#endif
-#endif
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