From ba8966d6c3319a2d7ea06ec25ed7a15cc1be94d5 Mon Sep 17 00:00:00 2001 From: Kevin Buettner Date: Mon, 20 Mar 2000 22:15:58 +0000 Subject: [PATCH] Fixes for floatformat_from_doublest(). --- gdb/ChangeLog | 8 ++++++++ gdb/utils.c | 6 ++++-- 2 files changed, 12 insertions(+), 2 deletions(-) diff --git a/gdb/ChangeLog b/gdb/ChangeLog index b715b30..5aad81e 100644 --- a/gdb/ChangeLog +++ b/gdb/ChangeLog @@ -1,3 +1,11 @@ +2000-03-20 Kevin Buettner + + * utils.c (floatformat_from_doublest): Don't assume that a long + will be exactly 32 bits in length. Also... make sure space + that we're writing the float to is completely initialized to + zeroes, even when the number of bits in the float is not + evenly divisible by FLOATFORMAT_CHAR_BIT. + 2000-03-20 Jim Blandy * i386-linux-nat.c: No need to #include "frame.h" any more. diff --git a/gdb/utils.c b/gdb/utils.c index a752f71..824dabe 100644 --- a/gdb/utils.c +++ b/gdb/utils.c @@ -2722,7 +2722,8 @@ floatformat_from_doublest (fmt, from, to) unsigned char *uto = (unsigned char *) to; memcpy (&dfrom, from, sizeof (dfrom)); - memset (uto, 0, fmt->totalsize / FLOATFORMAT_CHAR_BIT); + memset (uto, 0, (fmt->totalsize + FLOATFORMAT_CHAR_BIT - 1) + / FLOATFORMAT_CHAR_BIT); if (dfrom == 0) return; /* Result is zero */ if (dfrom != dfrom) /* Result is NaN */ @@ -2771,7 +2772,7 @@ floatformat_from_doublest (fmt, from, to) mant_bits = mant_bits_left < 32 ? mant_bits_left : 32; mant *= 4294967296.0; - mant_long = (unsigned long) mant; + mant_long = ((unsigned long) mant) & 0xffffffffL; mant -= mant_long; /* If the integer bit is implicit, then we need to discard it. @@ -2782,6 +2783,7 @@ floatformat_from_doublest (fmt, from, to) && fmt->intbit == floatformat_intbit_no) { mant_long <<= 1; + mant_long &= 0xffffffffL; mant_bits -= 1; } -- 2.7.4