diff options
Diffstat (limited to 'unix/tclUnixCompat.c')
| -rw-r--r-- | unix/tclUnixCompat.c | 39 |
1 files changed, 29 insertions, 10 deletions
diff --git a/unix/tclUnixCompat.c b/unix/tclUnixCompat.c index 48ba4d3..2a68f7f 100644 --- a/unix/tclUnixCompat.c +++ b/unix/tclUnixCompat.c @@ -99,12 +99,20 @@ static Tcl_Mutex compatLock; #undef NEED_COPYPWD #undef NEED_COPYSTRING +#if !defined(HAVE_GETGRNAM_R_5) && !defined(HAVE_GETGRNAM_R_4) +#define NEED_COPYGRP 1 +static int CopyGrp(struct group *tgtPtr, char *buf, int buflen); +#endif + +#if !defined(HAVE_GETPWNAM_R_5) && !defined(HAVE_GETPWNAM_R_4) +#define NEED_COPYPWD 1 +static int CopyPwd(struct passwd *tgtPtr, char *buf, int buflen); +#endif + static int CopyArray(char **src, int elsize, char *buf, int buflen); -static int CopyGrp(struct group *tgtPtr, char *buf, int buflen); static int CopyHostent(struct hostent *tgtPtr, char *buf, int buflen); -static int CopyPwd(struct passwd *tgtPtr, char *buf, int buflen); static int CopyString(const char *src, char *buf, int buflen); #endif @@ -214,7 +222,6 @@ TclpGetPwNam( return getpwnam_r(name, &tsdPtr->pwd, tsdPtr->pbuf, sizeof(tsdPtr->pbuf)); #else -#define NEED_COPYPWD 1 struct passwd *pwPtr; Tcl_MutexLock(&compatLock); @@ -295,7 +302,6 @@ TclpGetPwUid( return getpwuid_r(uid, &tsdPtr->pwd, tsdPtr->pbuf, sizeof(tsdPtr->pbuf)); #else -#define NEED_COPYPWD 1 struct passwd *pwPtr; Tcl_MutexLock(&compatLock); @@ -364,7 +370,7 @@ TclpGetGrNam( #else ThreadSpecificData *tsdPtr = TCL_TSD_INIT(&dataKey); -#ifdef HAVE_GETGRNAM_R_5 +#if defined(HAVE_GETGRNAM_R_5) struct group *grPtr = NULL; /* @@ -399,7 +405,6 @@ TclpGetGrNam( return getgrnam_r(name, &tsdPtr->grp, tsdPtr->gbuf, sizeof(tsdPtr->gbuf)); #else -#define NEED_COPYGRP 1 struct group *grPtr; Tcl_MutexLock(&compatLock); @@ -480,7 +485,6 @@ TclpGetGrGid( return getgrgid_r(gid, &tsdPtr->grp, tsdPtr->gbuf, sizeof(tsdPtr->gbuf)); #else -#define NEED_COPYGRP 1 struct group *grPtr; Tcl_MutexLock(&compatLock); @@ -973,8 +977,7 @@ CopyString( * Get CPU ID information on an Intel box under UNIX (either Linux or Cygwin) * * Results: - * Returns TCL_OK if successful, TCL_ERROR if CPUID is not supported or - * fails. + * Returns TCL_OK if successful, TCL_ERROR if CPUID is not supported. * * Side effects: * If successful, stores EAX, EBX, ECX and EDX registers after the CPUID @@ -990,7 +993,23 @@ TclWinCPUID( { int status = TCL_ERROR; - /* There is no reason this couldn't be implemented on UNIX as well */ + /* See: <http://en.wikipedia.org/wiki/CPUID> */ +#if defined(HAVE_CPUID) +#if defined(__x86_64__) || defined(_M_AMD64) || defined (_M_X64) + __asm__ __volatile__("movq %%rbx, %%rsi \n\t" /* save %rbx */ + "cpuid \n\t" + "xchgq %%rsi, %%rbx \n\t" /* restore the old %rbx */ + : "=a"(regsPtr[0]), "=S"(regsPtr[1]), "=c"(regsPtr[2]), "=d"(regsPtr[3]) + : "a"(index)); +#else + __asm__ __volatile__("mov %%ebx, %%esi \n\t" /* save %ebx */ + "cpuid \n\t" + "xchg %%esi, %%ebx \n\t" /* restore the old %ebx */ + : "=a"(regsPtr[0]), "=S"(regsPtr[1]), "=c"(regsPtr[2]), "=d"(regsPtr[3]) + : "a"(index)); +#endif + status = TCL_OK; +#endif return status; } |