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| author | Stu Grossman <grossman@cygnus> | 1996-04-13 21:33:59 +0000 |
|---|---|---|
| committer | Stu Grossman <grossman@cygnus> | 1996-04-13 21:33:59 +0000 |
| commit | 449abd890017f4db4e9842a492e5be44610ecfaa (patch) | |
| tree | 493484d6e0d941a2a50f343575ca4591f893b05c /gdb/utils.c | |
| parent | 9898b3b7c77ed601f60977ea2a7715cfcf17f4ec (diff) | |
| download | gdb-449abd890017f4db4e9842a492e5be44610ecfaa.zip gdb-449abd890017f4db4e9842a492e5be44610ecfaa.tar.gz gdb-449abd890017f4db4e9842a492e5be44610ecfaa.tar.bz2 | |
* remote-nindy.c (nindy_open): Acquire more target state so that
user can attach to a previously running program.
* (nindy_fetch_registers nindy_store_registers): Get rid of fp
conversion code. That's all handled in {extract store}_floating
now.
* utils.c (floatformat_to_double): Don't bias exponent when
handling zero's, denorms or NaNs.
* config/i960/tm-i960.h (REGISTER_CONVERT_TO_VIRTUAL
REGISTER_CONVERT_TO_RAW): Change to using DOUBLST and
FLOATFORMAT_TO/FROM_DOUBLEST macros.
* config/i960/tm-nindy960.h: Undefine
REGISTER_CONVERT_TO_VIRTUAL, REGISTER_CONVERT_TO_RAW, and
REGISTER_CONVERTIBLE. These are no longer necessary now that all
the magic happens in extract/store_floating.
Diffstat (limited to 'gdb/utils.c')
| -rw-r--r-- | gdb/utils.c | 19 |
1 files changed, 13 insertions, 6 deletions
diff --git a/gdb/utils.c b/gdb/utils.c index 22e511c..c703ba4 100644 --- a/gdb/utils.c +++ b/gdb/utils.c @@ -2035,6 +2035,7 @@ floatformat_to_long_double (fmt, from, to) unsigned long mant; unsigned int mant_bits, mant_off; int mant_bits_left; + int special_exponent; /* It's a NaN, denorm or zero */ exponent = get_field (ufrom, fmt->byteorder, fmt->totalsize, fmt->exp_start, fmt->exp_len); @@ -2045,7 +2046,12 @@ floatformat_to_long_double (fmt, from, to) mant_bits_left = fmt->man_len; mant_off = fmt->man_start; dto = 0.0; - exponent -= fmt->exp_bias; + + special_exponent = exponent == 0 || exponent == fmt->exp_nan; + +/* Don't bias zero's, denorms or NaNs. */ + if (!special_exponent) + exponent -= fmt->exp_bias; /* Build the result algebraically. Might go infinite, underflow, etc; who cares. */ @@ -2053,10 +2059,11 @@ floatformat_to_long_double (fmt, from, to) /* If this format uses a hidden bit, explicitly add it in now. Otherwise, increment the exponent by one to account for the integer bit. */ - if (fmt->intbit == floatformat_intbit_no) - dto = ldexp (1.0, exponent); - else - exponent++; + if (!special_exponent) + if (fmt->intbit == floatformat_intbit_no) + dto = ldexp (1.0, exponent); + else + exponent++; while (mant_bits_left > 0) { @@ -2074,7 +2081,7 @@ floatformat_to_long_double (fmt, from, to) /* Negate it if negative. */ if (get_field (ufrom, fmt->byteorder, fmt->totalsize, fmt->sign_start, 1)) dto = -dto; - memcpy (to, &dto, sizeof (dto)); + *to = dto; } static void put_field PARAMS ((unsigned char *, enum floatformat_byteorders, |