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authorJoseph Myers <joseph@codesourcery.com>2013-10-04 16:02:33 +0000
committerJoseph Myers <joseph@codesourcery.com>2013-10-04 16:02:33 +0000
commit29d73d867e1df54d703542cf7d076c5620dc2fb7 (patch)
treef6f0dd2a285848ae56b9bedaac2d817818bc674f /sysdeps/powerpc/soft-fp
parente246b347599a402119c5cb6726d7853cb6307f0f (diff)
downloadglibc-29d73d867e1df54d703542cf7d076c5620dc2fb7.tar.gz
Move powerpc ports pieces to libc.
Diffstat (limited to 'sysdeps/powerpc/soft-fp')
-rw-r--r--sysdeps/powerpc/soft-fp/sfp-machine.h69
1 files changed, 69 insertions, 0 deletions
diff --git a/sysdeps/powerpc/soft-fp/sfp-machine.h b/sysdeps/powerpc/soft-fp/sfp-machine.h
new file mode 100644
index 0000000000..508d8698d4
--- /dev/null
+++ b/sysdeps/powerpc/soft-fp/sfp-machine.h
@@ -0,0 +1,69 @@
+#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)
+
+/* 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
+#define FP_TRAPPING_EXCEPTIONS (~__sim_disabled_exceptions & 0x3e000000)
+
+/* FIXME: these variables should be thread specific (see bugzilla bug
+ 15483) and ideally preserved across signal handlers, like hardware
+ FP status words, but the latter is quite difficult to accomplish in
+ userland. */
+
+extern int __sim_exceptions;
+libc_hidden_proto (__sim_exceptions);
+extern int __sim_disabled_exceptions;
+libc_hidden_proto (__sim_disabled_exceptions);
+extern int __sim_round_mode;
+libc_hidden_proto (__sim_round_mode);
+
+extern void __simulate_exceptions (int x) attribute_hidden;