Update.

2002-10-08  Richard Henderson  <rth@redhat.com>

	* soft-fp/op-4.h: Handle carry correctly in
	__FP_FRAC_ADD_3, __FP_FRAC_ADD_4, __FP_FRAC_SUB_3,
	__FP_FRAC_SUB_4, __FP_FRAC_DEC_3, __FP_FRAC_DEC_4.
	* soft-fp/op-common.h: New macros _FP_DIV_MEAT_N_loop.

2002-10-08  Aldy Hernandez  <aldyh@redhat.com>

	* configure.in: Compute completely-soft.
	* config.make.in: Make completely-soft available to sub-makes.
	* sysdeps/powerpc/soft-fp/Makefile: Add gcc-single-routines and
	gcc-double-routines.  Add sim-full.c.  Add fenv_const and
	fe_nomask to libm-support.
	* sysdeps/powerpc/soft-fp/sim-full.c: New file.
	* sysdeps/powerpc/soft-fp/fraiseexcpt.c: New file.
	* sysdeps/powerpc/soft-fp/fegetexcept.c: New file.
	* sysdeps/powerpc/soft-fp/fclrexcpt.c: New file.
	* sysdeps/powerpc/soft-fp/ftestexcept.c: New file.
	* sysdeps/powerpc/soft-fp/fgetexcptflg.c: New file.
	* sysdeps/powerpc/soft-fp/fsetexcptflg.c: New file.
	* sysdeps/powerpc/soft-fp/fedisblxcpt.c: New file.
	* sysdeps/powerpc/soft-fp/feenablxcpt.c: New file.
	* sysdeps/powerpc/soft-fp/fegetenv.c: New file.
	* sysdeps/powerpc/soft-fp/fesetenv.c: New file.
	* sysdeps/powerpc/soft-fp/fegetround.c: New file.
	* sysdeps/powerpc/soft-fp/fesetround.c: New file.
	* sysdeps/powerpc/soft-fp/feupdateenv.c: New file.
	* sysdeps/powerpc/soft-fp/feholdexcpt.c: New file.
	* sysdeps/powerpc/soft-fp/fenv_const.c: New file.
	* sysdeps/powerpc/soft-fp/libm-test-ulps: New file.
	* sysdeps/powerpc/soft-fp/Versions: Add libgcc soft-float
	symbols.  Add __sim_disabled_exceptions, __sim_exceptions,
	__sim_round_mode.
	* sysdeps/powerpc/soft-float/Dist: Add sim-full.c, fenv_const.c.
	* sysdeps/powerpc/soft-float/sfp-machine.h: Define
	FP_HANDLE_EXCEPTIONS.
	Define FP_ROUNDMODE.
	Redefine FP_* macros to correspond to the FE_* bit positions.
	Define FP_DIV_MEAT_S to _FP_DIV_MEAT_1_loop.
	Define externs for __sim_exceptions, __sim_disabled_exceptions,
	__sim_round_mode, __simulate_exceptions.
	* sysdeps/powerpc/fpu/bits/fenv.h: Move file from here...
	* sysdeps/powerpc/bits/fenv.h: ...to here.

2002-10-06  Jakub Jelinek  <jakub@redhat.com>

	* sysdeps/powerpc/powerpc32/dl-machine.c (__process_machine_rela):
	Store R_PPC_UADDR32 and R_PPC_UADDR16 one byte at a time.
	Use __builtin_expect for R_PPC_ADDR24 overflow check.  Fix
	R_PPC_ADDR16, R_PPC_UADDR16 and R_PPC_ADDR14* overflow check, use
	__builtin_expect.

1 files changed, 44 insertions, 0 deletions

diff --git a/soft-fp/op-common.h b/soft-fp/op-common.h
index 232604e74a..3abafa14a8 100644
--- a/soft-fp/op-common.h
+++ b/soft-fp/op-common.h
@@ -766,3 +766,47 @@ do {									\
     q = n / d, r = n % d;			\
   } while (0)
 
+
+/* A restoring bit-by-bit division primitive.  */
+
+#define _FP_DIV_MEAT_N_loop(fs, wc, R, X, Y)				\
+  do {									\
+    int count = _FP_WFRACBITS_##fs;					\
+    _FP_FRAC_DECL_##wc (u);						\
+    _FP_FRAC_DECL_##wc (v);						\
+    _FP_FRAC_COPY_##wc (u, X);						\
+    _FP_FRAC_COPY_##wc (v, Y);						\
+    _FP_FRAC_SET_##wc (R, _FP_ZEROFRAC_##wc);				\
+    /* Normalize U and V.  */						\
+    _FP_FRAC_SLL_##wc (u, _FP_WFRACXBITS_##fs);				\
+    _FP_FRAC_SLL_##wc (v, _FP_WFRACXBITS_##fs);				\
+    /* First round.  Since the operands are normalized, either the	\
+       first or second bit will be set in the fraction.  Produce a	\
+       normalized result by checking which and adjusting the loop	\
+       count and exponent accordingly.  */				\
+    if (_FP_FRAC_GE_1 (u, v))						\
+      {									\
+	_FP_FRAC_SUB_##wc (u, u, v);					\
+	_FP_FRAC_LOW_##wc (R) |= 1;					\
+	count--;							\
+      }									\
+    else								\
+      R##_e--;								\
+    /* Subsequent rounds.  */						\
+    do {								\
+      int msb = (_FP_WS_TYPE) _FP_FRAC_HIGH_##wc (u) < 0;		\
+      _FP_FRAC_SLL_##wc (u, 1);						\
+      _FP_FRAC_SLL_##wc (R, 1);						\
+      if (msb || _FP_FRAC_GE_1 (u, v))					\
+	{								\
+	  _FP_FRAC_SUB_##wc (u, u, v);					\
+	  _FP_FRAC_LOW_##wc (R) |= 1;					\
+	}								\
+    } while (--count > 0);						\
+    /* If there's anything left in U, the result is inexact.  */	\
+    _FP_FRAC_LOW_##wc (R) |= !_FP_FRAC_ZEROP_##wc (u);			\
+  } while (0)
+
+#define _FP_DIV_MEAT_1_loop(fs, R, X, Y)  _FP_DIV_MEAT_N_loop (fs, 1, R, X, Y)
+#define _FP_DIV_MEAT_2_loop(fs, R, X, Y)  _FP_DIV_MEAT_N_loop (fs, 2, R, X, Y)
+#define _FP_DIV_MEAT_4_loop(fs, R, X, Y)  _FP_DIV_MEAT_N_loop (fs, 4, R, X, Y)