* Bug fixes and enhancements in the Gtk+/Gnome interfaces.

[vlc] / include / tests.h

diff --git a/include/tests.h b/include/tests.h
index c9104a376957a233b412f495aaa21bd3d5de3e55..c6bd76183bd3252b6f70c785771ee274fd13a030 100644 (file)
--- a/include/tests.h
+++ b/include/tests.h
@@ -3,7 +3,7 @@
  *****************************************************************************
  * Copyright (C) 1996, 1997, 1998, 1999, 2000 VideoLAN
  *
- * Authors:
+ * Authors: Samuel Hocevar <sam@zoy.org>
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -20,11 +20,123 @@
  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111, USA.
  *****************************************************************************/
 
+#define CPU_CAPABILITY_NONE    0
+#define CPU_CAPABILITY_486     1<<0
+#define CPU_CAPABILITY_586     1<<1
+#define CPU_CAPABILITY_PPRO    1<<2
+#define CPU_CAPABILITY_MMX     1<<3
+#define CPU_CAPABILITY_3DNOW   1<<4
+#define CPU_CAPABILITY_MMXEXT  1<<5
+
 /*****************************************************************************
- * Prototypes
+ * TestVersion: tests if the given string equals the current version
  *****************************************************************************/
+int TestVersion( char * psz_version );
 int TestProgram( char * psz_program );
 int TestMethod( char * psz_var, char * psz_method );
-int TestVersion( char * psz_version );
-int TestMMX( void );
+int TestCPU( int i_capabilities );
+
+/*****************************************************************************
+ * CPUCapabilities: list the processors MMX support and other capabilities
+ *****************************************************************************
+ * This function is called to list extensions the CPU may have.
+ *****************************************************************************/
+static __inline__ int CPUCapabilities( void )
+{
+#ifdef SYS_BEOS
+    return( CPU_CAPABILITY_NONE
+            | CPU_CAPABILITY_486
+            | CPU_CAPABILITY_586
+            | CPU_CAPABILITY_MMX );
+#else
+    int           i_capabilities = CPU_CAPABILITY_NONE;
+#ifdef __i386__
+    unsigned int  i_eax, i_ebx, i_ecx, i_edx;
+    boolean_t     b_amd;
+
+#define cpuid( a )                 \
+    asm volatile ( "cpuid"         \
+                 : "=a" ( i_eax ), \
+                   "=b" ( i_ebx ), \
+                   "=c" ( i_ecx ), \
+                   "=d" ( i_edx )  \
+                 : "a"  ( a )      \
+                 : "cc" );         \
+
+    /* test for a 486 CPU */
+    asm volatile ( "pushfl
+                    popl %%eax
+                    movl %%eax, %%ebx
+                    xorl $0x200000, %%eax
+                    pushl %%eax
+                    popfl
+                    pushfl
+                    popl %%eax"
+                 : "=a" ( i_eax ),
+                   "=b" ( i_ebx )
+                 :
+                 : "cc" );
+
+    if( i_eax == i_ebx )
+    {
+        return( i_capabilities );
+    }
+
+    i_capabilities |= CPU_CAPABILITY_486;
+
+    /* the CPU supports the CPUID instruction - get its level */
+    cpuid( 0x00000000 );
+
+    if( !i_eax )
+    {
+        return( i_capabilities );
+    }
+
+    /* FIXME: this isn't correct, since some 486s have cpuid */
+    i_capabilities |= CPU_CAPABILITY_586;
+
+    /* borrowed from mpeg2dec */
+    b_amd = ( i_ebx == 0x68747541 ) && ( i_ecx == 0x444d4163 )
+                    && ( i_edx == 0x69746e65 );
+
+    /* test for the MMX flag */
+    cpuid( 0x00000001 );
+
+    if( ! (i_edx & 0x00800000) )
+    {
+        return( i_capabilities );
+    }
+
+    i_capabilities |= CPU_CAPABILITY_MMX;
+
+    if( i_edx & 0x02000000 )
+    {
+        i_capabilities |= CPU_CAPABILITY_MMXEXT;
+    }
+    
+    /* test for additional capabilities */
+    cpuid( 0x80000000 );
+
+    if( i_eax < 0x80000001 )
+    {
+        return( i_capabilities );
+    }
+
+    /* list these additional capabilities */
+    cpuid( 0x80000001 );
+
+    if( i_edx & 0x80000000 )
+    {
+        i_capabilities |= CPU_CAPABILITY_3DNOW;
+    }
+
+    if( b_amd && ( i_edx & 0x00400000 ) )
+    {
+        i_capabilities |= CPU_CAPABILITY_MMXEXT;
+    }
+#endif /* __i386__ */
+
+    return( i_capabilities );
+#endif /* SYS_BEOS */
+}