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| author | David S. Miller <davem@davemloft.net> | 2012-05-27 21:02:14 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2012-05-27 21:11:42 -0700 |
| commit | d66ef399f5a9e1656fe8e435a8fa655cf271b676 (patch) | |
| tree | fa8fa1a3d009ccbac649f4587ede51c4e2d0b871 /sysdeps/sparc/sparc32/soft-fp/sfp-machine.h | |
| parent | 04fb54b50745587b5bfb7baff66ac9f69ac92db9 (diff) | |
| download | glibc-d66ef399f5a9e1656fe8e435a8fa655cf271b676.tar.gz glibc-d66ef399f5a9e1656fe8e435a8fa655cf271b676.tar.xz glibc-d66ef399f5a9e1656fe8e435a8fa655cf271b676.zip | |
Fix underflow reporting and tie up loose ends in sparc soft-fp.
* sysdeps/sparc/sparc32/soft-fp/q_util.c (___Q_numbers): Delete. (___Q_zero): New. (__Q_simulate_exceptions): Return void. Change to simulate exceptions by writing into the %fsr. * sysdeps/sparc/sparc64/soft-fp/qp_util.c (__Qp_handle_exceptions): Likewise. (numbers): Delete. * sysdeps/sparc/sparc64/soft-fp/Versions: Remove entry for __Qp_handle_exceptions. * sysdeps/unix/sysv/linux/sparc/sparc64/nptl/libc.abilist: Remove __Qp_handle_exceptions. * sysdeps/sparc/sparc32/soft-fp/sfp-machine.h (_FP_DECL_EX): Mark as unused and give dummy FP_RND_NEAREST initializer. (FP_INHIBIT_RESULTS): Define. (___Q_simulate_exceptions): Update declaration. (FP_HANDLE_EXCEPTIONS): Use ___Q_zero and tidy inline asm formatting. * sysdeps/sparc/sparc64/soft-fp/sfp-machine.h (_FP_DECL_EX): Mark as unused and give dummy FP_RND_NEAREST initializer. (__Qp_handle_exceptions): Update declaration. (FP_HANDLE_EXCEPTIONS, QP_NO_EXCEPTIONS): Tidy inline asm formatting.
Diffstat (limited to 'sysdeps/sparc/sparc32/soft-fp/sfp-machine.h')
| -rw-r--r-- | sysdeps/sparc/sparc32/soft-fp/sfp-machine.h | 16 |
1 files changed, 9 insertions, 7 deletions
diff --git a/sysdeps/sparc/sparc32/soft-fp/sfp-machine.h b/sysdeps/sparc/sparc32/soft-fp/sfp-machine.h index 8cdc7c2677..4314082f70 100644 --- a/sysdeps/sparc/sparc32/soft-fp/sfp-machine.h +++ b/sysdeps/sparc/sparc32/soft-fp/sfp-machine.h @@ -184,15 +184,18 @@ #define FP_EX_DIVZERO (1 << 1) #define FP_EX_INEXACT (1 << 0) -#define _FP_DECL_EX fpu_control_t _fcw +#define _FP_DECL_EX \ + fpu_control_t _fcw __attribute__ ((unused)) = (FP_RND_NEAREST << 30) #define FP_INIT_ROUNDMODE \ do { \ _FPU_GETCW(_fcw); \ } while (0) +#define FP_INHIBIT_RESULTS ((_fcw >> 23) & _fex) + /* Simulate exceptions using double arithmetics. */ -extern double ___Q_simulate_exceptions(int exc); +extern void ___Q_simulate_exceptions(int exc); #define FP_HANDLE_EXCEPTIONS \ do { \ @@ -201,11 +204,10 @@ do { \ /* This is the common case, so we do it inline. \ * We need to clear cexc bits if any. \ */ \ - extern unsigned long long ___Q_numbers[]; \ - __asm__ __volatile__("\ - ldd [%0], %%f30\n\ - faddd %%f30, %%f30, %%f30\ - " : : "r" (___Q_numbers) : "f30"); \ + extern unsigned long long ___Q_zero; \ + __asm__ __volatile__("ldd [%0], %%f30\n\t" \ + "faddd %%f30, %%f30, %%f30" \ + : : "r" (&___Q_zero) : "f30"); \ } \ else \ ___Q_simulate_exceptions (_fex); \ |