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(svn r4191) - Codechange: Properly set newlines and id for os_timer.c

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Darkvater 2006-03-31 08:35:05 +00:00
parent 7f134d238f
commit c35546964d
1 changed files with 70 additions and 68 deletions
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138
os_timer.c
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@ -1,68 +1,70 @@
#include "stdafx.h" /* $Id$ */
#undef RDTSC_AVAILABLE #include "stdafx.h"
/* rdtsc for MSC_VER, uses simple inline assembly, or _rdtsc #undef RDTSC_AVAILABLE
* from external win64.asm because VS2005 does not support inline assembly */
#if defined(_MSC_VER) && !defined(RDTSC_AVAILABLE) /* rdtsc for MSC_VER, uses simple inline assembly, or _rdtsc
# if defined (_M_AMD64) * from external win64.asm because VS2005 does not support inline assembly */
extern uint64 _rdtsc(void); #if defined(_MSC_VER) && !defined(RDTSC_AVAILABLE)
# else # if defined (_M_AMD64)
uint64 _declspec(naked) _rdtsc(void) extern uint64 _rdtsc(void);
{ # else
_asm { uint64 _declspec(naked) _rdtsc(void)
rdtsc {
ret _asm {
} rdtsc
} ret
# endif }
# define RDTSC_AVAILABLE }
#endif # endif
# define RDTSC_AVAILABLE
/* rdtsc for OS/2. Hopefully this works, who knows */ #endif
#if defined (__WATCOMC__) && !defined(RDTSC_AVAILABLE)
unsigned __int64 _rdtsc( void); /* rdtsc for OS/2. Hopefully this works, who knows */
# pragma aux _rdtsc = 0x0F 0x31 value [edx eax] parm nomemory modify exact [edx eax] nomemory; #if defined (__WATCOMC__) && !defined(RDTSC_AVAILABLE)
# define RDTSC_AVAILABLE unsigned __int64 _rdtsc( void);
#endif # pragma aux _rdtsc = 0x0F 0x31 value [edx eax] parm nomemory modify exact [edx eax] nomemory;
# define RDTSC_AVAILABLE
/* rdtsc for all other *nix-en (hopefully). Use GCC syntax */ #endif
#if defined(__i386__) || defined(__x86_64__) && !defined(RDTSC_AVAILABLE)
uint64 _rdtsc(void) /* rdtsc for all other *nix-en (hopefully). Use GCC syntax */
{ #if defined(__i386__) || defined(__x86_64__) && !defined(RDTSC_AVAILABLE)
uint32 high, low; uint64 _rdtsc(void)
__asm__ __volatile__ ("rdtsc" : "=a" (low), "=d" (high)); {
return ((uint64)high << 32) | low; uint32 high, low;
} __asm__ __volatile__ ("rdtsc" : "=a" (low), "=d" (high));
# define RDTSC_AVAILABLE return ((uint64)high << 32) | low;
#endif }
# define RDTSC_AVAILABLE
/* rdtsc for PPC which has this not */ #endif
#if defined(__POWERPC__) && !defined(RDTSC_AVAILABLE)
uint64 _rdtsc(void) /* rdtsc for PPC which has this not */
{ #if defined(__POWERPC__) && !defined(RDTSC_AVAILABLE)
uint32 high = 0, high2 = 0, low; uint64 _rdtsc(void)
/* PPC does not have rdtsc, so we cheat by reading the two 32-bit time-counters {
* it has, 'Move From Time Base (Upper)'. Since these are two reads, in the uint32 high = 0, high2 = 0, low;
* very unlikely event that the lower part overflows to the upper part while we /* PPC does not have rdtsc, so we cheat by reading the two 32-bit time-counters
* read it; we double-check and reread the registers */ * it has, 'Move From Time Base (Upper)'. Since these are two reads, in the
asm volatile ( * very unlikely event that the lower part overflows to the upper part while we
"mftbu %0\n" * read it; we double-check and reread the registers */
"mftb %1\n" asm volatile (
"mftbu %2\n" "mftbu %0\n"
"cmpw %3,%4\n" "mftb %1\n"
"bne- $-16\n" "mftbu %2\n"
: "=r" (high), "=r" (low), "=r" (high2) "cmpw %3,%4\n"
: "0" (high), "2" (high2) "bne- $-16\n"
); : "=r" (high), "=r" (low), "=r" (high2)
return ((uint64)high << 32) | low; : "0" (high), "2" (high2)
} );
# define RDTSC_AVAILABLE return ((uint64)high << 32) | low;
#endif }
# define RDTSC_AVAILABLE
/* In all other cases we have no support for rdtsc. No major issue, #endif
* you just won't be able to profile your code with TIC()/TOC() */
#if !defined(RDTSC_AVAILABLE) /* In all other cases we have no support for rdtsc. No major issue,
#warning "OS has no support for rdtsc()" * you just won't be able to profile your code with TIC()/TOC() */
uint64 _rdtsc(void) {return 0;} #if !defined(RDTSC_AVAILABLE)
#endif #warning "OS has no support for rdtsc()"
uint64 _rdtsc(void) {return 0;}
#endif