2000-12-15 Ben Elliston <bje@redhat.com>
* sim-fpu.h (sim_fpu_printn_fpu): Declare. * sim-fpu.c (print_bits): Add digits parameter. Print only as many trailing digits as specified (-1 to print all digits). (sim_fpu_print_fpu): New wrapper around sim_fpu_printn_fpu. (sim_fpu_printn_fpu): Rename from sim_fpu_print_fpu; update calls to print_bits ().
This commit is contained in:
Ben Elliston
parent
b21f0843bf
commit
b94c096644
3 changed files with 36 additions and 31 deletions
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@ -1,3 +1,12 @@
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2000-12-15 Ben Elliston <bje@redhat.com>
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* sim-fpu.h (sim_fpu_printn_fpu): Declare.
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* sim-fpu.c (print_bits): Add digits parameter. Print only as many
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trailing digits as specified (-1 to print all digits).
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(sim_fpu_print_fpu): New wrapper around sim_fpu_printn_fpu.
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(sim_fpu_printn_fpu): Rename from sim_fpu_print_fpu; update calls
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to print_bits ().
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2000-12-13 Ben Elliston <bje@redhat.com>
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* cgen.sh: Set prefix/PREFIX (append ISA if applicable). Factor
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@ -51,25 +51,30 @@ the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
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#include "sim-assert.h"
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/* Debugging support. */
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/* Debugging support.
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If digits is -1, then print all digits. */
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static void
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print_bits (unsigned64 x,
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int msbit,
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int digits,
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sim_fpu_print_func print,
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void *arg)
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{
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unsigned64 bit = LSBIT64 (msbit);
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int i = 4;
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while (bit)
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while (bit && digits)
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{
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if (i == 0)
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print (arg, ",");
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if ((x & bit))
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print (arg, "1");
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else
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print (arg, "0");
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bit >>= 1;
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if (digits > 0) digits--;
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i = (i + 1) % 4;
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}
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}
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@ -1375,14 +1380,6 @@ sim_fpu_mul (sim_fpu *f,
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ASSERT (high >= LSBIT64 ((NR_FRAC_GUARD * 2) - 64));
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ASSERT (LSBIT64 (((NR_FRAC_GUARD + 1) * 2) - 64) < IMPLICIT_1);
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#if 0
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printf ("\n");
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print_bits (high, 63, (sim_fpu_print_func*)fprintf, stdout);
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printf (";");
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print_bits (low, 63, (sim_fpu_print_func*)fprintf, stdout);
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printf ("\n");
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#endif
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/* normalize */
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do
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{
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@ -1394,13 +1391,6 @@ sim_fpu_mul (sim_fpu *f,
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}
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while (high < IMPLICIT_1);
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#if 0
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print_bits (high, 63, (sim_fpu_print_func*)fprintf, stdout);
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printf (";");
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print_bits (low, 63, (sim_fpu_print_func*)fprintf, stdout);
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printf ("\n");
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#endif
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ASSERT (high >= IMPLICIT_1 && high < IMPLICIT_2);
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if (low != 0)
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{
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@ -1530,16 +1520,6 @@ sim_fpu_div (sim_fpu *f,
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numerator <<= 1;
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}
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#if 0
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printf ("\n");
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print_bits (quotient, 63, (sim_fpu_print_func*)fprintf, stdout);
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printf ("\n");
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print_bits (numerator, 63, (sim_fpu_print_func*)fprintf, stdout);
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printf ("\n");
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print_bits (denominator, 63, (sim_fpu_print_func*)fprintf, stdout);
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printf ("\n");
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#endif
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/* discard (but save) the extra bits */
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if ((quotient & LSMASK64 (NR_SPARE -1, 0)))
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quotient = (quotient >> NR_SPARE) | 1;
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@ -2476,18 +2456,27 @@ INLINE_SIM_FPU (void)
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sim_fpu_print_fpu (const sim_fpu *f,
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sim_fpu_print_func *print,
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void *arg)
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{
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sim_fpu_printn_fpu (f, print, -1, arg);
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}
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INLINE_SIM_FPU (void)
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sim_fpu_printn_fpu (const sim_fpu *f,
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sim_fpu_print_func *print,
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int digits,
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void *arg)
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{
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print (arg, "%s", f->sign ? "-" : "+");
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switch (f->class)
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{
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case sim_fpu_class_qnan:
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print (arg, "0.");
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print_bits (f->fraction, NR_FRAC_GUARD - 1, print, arg);
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print_bits (f->fraction, NR_FRAC_GUARD - 1, digits, print, arg);
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print (arg, "*QuietNaN");
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break;
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case sim_fpu_class_snan:
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print (arg, "0.");
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print_bits (f->fraction, NR_FRAC_GUARD - 1, print, arg);
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print_bits (f->fraction, NR_FRAC_GUARD - 1, digits, print, arg);
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print (arg, "*SignalNaN");
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break;
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case sim_fpu_class_zero:
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@ -2499,8 +2488,8 @@ sim_fpu_print_fpu (const sim_fpu *f,
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case sim_fpu_class_number:
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case sim_fpu_class_denorm:
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print (arg, "1.");
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print_bits (f->fraction, NR_FRAC_GUARD - 1, print, arg);
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print (arg, "*2^%+-5d", f->normal_exp);
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print_bits (f->fraction, NR_FRAC_GUARD - 1, digits, print, arg);
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print (arg, "*2^%+d", f->normal_exp);
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ASSERT (f->fraction >= IMPLICIT_1);
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ASSERT (f->fraction < IMPLICIT_2);
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}
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@ -402,10 +402,17 @@ extern const sim_fpu sim_fpu_max64;
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typedef void sim_fpu_print_func (void *, char *, ...);
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/* Print a sim_fpu with full precision. */
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INLINE_SIM_FPU (void) sim_fpu_print_fpu (const sim_fpu *f,
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sim_fpu_print_func *print,
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void *arg);
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/* Print a sim_fpu with `n' trailing digits. */
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INLINE_SIM_FPU (void) sim_fpu_printn_fpu (const sim_fpu *f,
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sim_fpu_print_func *print,
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int digits,
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void *arg);
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INLINE_SIM_FPU (void) sim_fpu_print_status (int status,
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sim_fpu_print_func *print,
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void *arg);
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