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authorJoseph Myers <joseph@codesourcery.com>2018-05-24 22:02:32 +0000
committerJoseph Myers <joseph@codesourcery.com>2018-05-24 22:02:32 +0000
commit14186e8d1f3ee91f7b685a4e011607ce990d5649 (patch)
treee331bac628a3f672f9751ea48797c488c98b00b8 /sysdeps/powerpc/nofpu
parentfb0e10b8eb1ebb68c57d4551f7a95118f3c54837 (diff)
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Remove sysdeps/powerpc/soft-fp directory.
As per <https://sourceware.org/ml/libc-alpha/2014-10/msg00369.html>, there should not be separate sysdeps/<arch>/soft-fp directories when those are used by all configurations that use sysdeps/<arch>, and, more generally, should not be sysdeps/foo/Implies files pointing to a subdirectory foo/bar. sysdeps/powerpc/soft-fp isn't quite such a case, as the Implies files pointing to it are sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/Implies and sysdeps/unix/sysv/linux/powerpc/powerpc32/e500/nofpu/Implies (and indeed there is a different sfp-machine.h used for powerpc64le). However, the same principle applies: there is no need for this directory because sfp-machine.h, the only file in it, can most naturally go in sysdeps/powerpc/nofpu, which is used by exactly the same configurations (and there is a close dependence between the files there and the sfp-machine.h implementation). This patch eliminates the sysdeps/powerpc/soft-fp directory accordingly. Tested with build-many-glibcs.py that installed stripped shared libraries for powerpc configurations are unchanged by this patch. * sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/Implies: Remove powerpc/soft-fp. * sysdeps/unix/sysv/linux/powerpc/powerpc32/e500/nofpu/Implies: Likewise. * sysdeps/powerpc/soft-fp/sfp-machine.h: Move to .... * sysdeps/powerpc/nofpu/sfp-machine.h: ... here.
Diffstat (limited to 'sysdeps/powerpc/nofpu')
-rw-r--r--sysdeps/powerpc/nofpu/sfp-machine.h114
1 files changed, 114 insertions, 0 deletions
diff --git a/sysdeps/powerpc/nofpu/sfp-machine.h b/sysdeps/powerpc/nofpu/sfp-machine.h
new file mode 100644
index 0000000..d92a90e
--- /dev/null
+++ b/sysdeps/powerpc/nofpu/sfp-machine.h
@@ -0,0 +1,114 @@
+#define _FP_W_TYPE_SIZE 32
+#define _FP_W_TYPE unsigned long
+#define _FP_WS_TYPE signed long
+#define _FP_I_TYPE long
+
+#define _FP_MUL_MEAT_S(R,X,Y) \
+ _FP_MUL_MEAT_1_wide(_FP_WFRACBITS_S,R,X,Y,umul_ppmm)
+#define _FP_MUL_MEAT_D(R,X,Y) \
+ _FP_MUL_MEAT_2_wide(_FP_WFRACBITS_D,R,X,Y,umul_ppmm)
+#define _FP_MUL_MEAT_Q(R,X,Y) \
+ _FP_MUL_MEAT_4_wide(_FP_WFRACBITS_Q,R,X,Y,umul_ppmm)
+
+#define _FP_DIV_MEAT_S(R,X,Y) _FP_DIV_MEAT_1_loop(S,R,X,Y)
+#define _FP_DIV_MEAT_D(R,X,Y) _FP_DIV_MEAT_2_udiv(D,R,X,Y)
+#define _FP_DIV_MEAT_Q(R,X,Y) _FP_DIV_MEAT_4_udiv(Q,R,X,Y)
+
+#define _FP_NANFRAC_S ((_FP_QNANBIT_S << 1) - 1)
+#define _FP_NANFRAC_D ((_FP_QNANBIT_D << 1) - 1), -1
+#define _FP_NANFRAC_Q ((_FP_QNANBIT_Q << 1) - 1), -1, -1, -1
+#define _FP_NANSIGN_S 0
+#define _FP_NANSIGN_D 0
+#define _FP_NANSIGN_Q 0
+
+#define _FP_KEEPNANFRACP 1
+#define _FP_QNANNEGATEDP 0
+
+/* Someone please check this. */
+#define _FP_CHOOSENAN(fs, wc, R, X, Y, OP) \
+ do { \
+ if ((_FP_FRAC_HIGH_RAW_##fs(X) & _FP_QNANBIT_##fs) \
+ && !(_FP_FRAC_HIGH_RAW_##fs(Y) & _FP_QNANBIT_##fs)) \
+ { \
+ R##_s = Y##_s; \
+ _FP_FRAC_COPY_##wc(R,Y); \
+ } \
+ else \
+ { \
+ R##_s = X##_s; \
+ _FP_FRAC_COPY_##wc(R,X); \
+ } \
+ R##_c = FP_CLS_NAN; \
+ } while (0)
+
+#define _FP_TININESS_AFTER_ROUNDING 0
+
+#if defined __NO_FPRS__ && !defined _SOFT_FLOAT
+
+/* Exception flags. We use the bit positions of the appropriate bits
+ in the FPEFSCR. */
+
+# include <fenv_libc.h>
+# include <sysdep.h>
+# include <sys/prctl.h>
+
+int __feraiseexcept_soft (int);
+libc_hidden_proto (__feraiseexcept_soft)
+
+# define FP_EX_INEXACT SPEFSCR_FINXS
+# define FP_EX_INVALID SPEFSCR_FINVS
+# define FP_EX_DIVZERO SPEFSCR_FDBZS
+# define FP_EX_UNDERFLOW SPEFSCR_FUNFS
+# define FP_EX_OVERFLOW SPEFSCR_FOVFS
+
+# define _FP_DECL_EX \
+ int _spefscr __attribute__ ((unused)), _ftrapex __attribute__ ((unused)) = 0
+# define FP_INIT_ROUNDMODE \
+ do \
+ { \
+ int _r; \
+ INTERNAL_SYSCALL_DECL (_err); \
+ \
+ _spefscr = fegetenv_register (); \
+ _r = INTERNAL_SYSCALL (prctl, _err, 2, PR_GET_FPEXC, &_ftrapex); \
+ if (INTERNAL_SYSCALL_ERROR_P (_r, _err)) \
+ _ftrapex = 0; \
+ } \
+ while (0)
+# define FP_INIT_EXCEPTIONS /* Empty. */
+
+# define FP_HANDLE_EXCEPTIONS __feraiseexcept_soft (_fex)
+# define FP_ROUNDMODE (_spefscr & 0x3)
+
+/* Not correct in general, but sufficient for the uses in soft-fp. */
+# define FP_TRAPPING_EXCEPTIONS (_ftrapex & PR_FP_EXC_UND \
+ ? FP_EX_UNDERFLOW \
+ : 0)
+
+#else
+
+/* Exception flags. We use the bit positions of the appropriate bits
+ in the FPSCR, which also correspond to the FE_* bits. This makes
+ everything easier ;-). */
+# define FP_EX_INVALID (1 << (31 - 2))
+# define FP_EX_OVERFLOW (1 << (31 - 3))
+# define FP_EX_UNDERFLOW (1 << (31 - 4))
+# define FP_EX_DIVZERO (1 << (31 - 5))
+# define FP_EX_INEXACT (1 << (31 - 6))
+
+# define FP_HANDLE_EXCEPTIONS __simulate_exceptions (_fex)
+# define FP_ROUNDMODE __sim_round_mode_thread
+# define FP_TRAPPING_EXCEPTIONS \
+ (~__sim_disabled_exceptions_thread & 0x3e000000)
+
+#endif
+
+extern __thread int __sim_exceptions_thread attribute_tls_model_ie;
+libc_hidden_tls_proto (__sim_exceptions_thread, tls_model ("initial-exec"));
+extern __thread int __sim_disabled_exceptions_thread attribute_tls_model_ie;
+libc_hidden_tls_proto (__sim_disabled_exceptions_thread,
+ tls_model ("initial-exec"));
+extern __thread int __sim_round_mode_thread attribute_tls_model_ie;
+libc_hidden_tls_proto (__sim_round_mode_thread, tls_model ("initial-exec"));
+
+extern void __simulate_exceptions (int x) attribute_hidden;