This is the mail archive of the libc-hacker@sourceware.org mailing list for the glibc project.
Note that libc-hacker is a closed list. You may look at the archives of this list, but subscription and posting are not open.
Index Nav: | [Date Index] [Subject Index] [Author Index] [Thread Index] | |
---|---|---|
Message Nav: | [Date Prev] [Date Next] | [Thread Prev] [Thread Next] |
Other format: | [Raw text] |
Hi! bsrq %rdx, %eax ins not a valid instruction. While we could tweak these macros to store result in the same sized variable as input and only then copy to r and furthermore handle the various sizeof (x) cases, GCC 3.4+ contains __builtin_clz{,l,ll} and the generic soft-fp.h definition already handles that all (plus __builtin_clz expands to bsrl on i?86/x86_64 and __builtin_clzl on x86_64 to bsrq). 2007-01-10 Jakub Jelinek <jakub@redhat.com> * sysdeps/i386/soft-fp/sfp-machine.h (__FP_CLZ): Remove. * sysdeps/x86_64/soft-fp/sfp-machine.h (__FP_CLZ): Likewise. --- libc/sysdeps/i386/soft-fp/sfp-machine.h.jj 2002-11-01 22:49:28.000000000 +0100 +++ libc/sysdeps/i386/soft-fp/sfp-machine.h 2007-01-10 12:15:01.000000000 +0100 @@ -27,12 +27,6 @@ : "0"(xh), "1"(xl), "g"(yh), "g"(yl) \ : "cc") -#define __FP_CLZ(r, x) \ - do { \ - __asm__("bsrl %1,%0" : "=r"(r) : "g"(x) : "cc"); \ - r ^= 31; \ - } while (0) - #define _i386_mul_32_64(rh, rl, x, y) \ __asm__("mull %2" : "=d"(rh), "=a"(rl) : "%g"(x), "1"(y) : "cc") --- libc/sysdeps/x86_64/soft-fp/sfp-machine.h.jj 2002-11-01 22:49:29.000000000 +0100 +++ libc/sysdeps/x86_64/soft-fp/sfp-machine.h 2007-01-10 12:13:31.000000000 +0100 @@ -3,12 +3,6 @@ #define _FP_WS_TYPE signed long #define _FP_I_TYPE long -#define __FP_CLZ(r, x) \ - do { \ - __asm__("bsrq %1,%0" : "=r"(r) : "g"(x) : "cc"); \ - r ^= 63; \ - } while (0) - #define _FP_NANFRAC_S _FP_QNANBIT_S #define _FP_NANFRAC_D _FP_QNANBIT_D, 0 #define _FP_NANFRAC_Q _FP_QNANBIT_Q, 0, 0, 0 Jakub
Index Nav: | [Date Index] [Subject Index] [Author Index] [Thread Index] | |
---|---|---|
Message Nav: | [Date Prev] [Date Next] | [Thread Prev] [Thread Next] |