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I'm using the obvious fix rule to commit this.

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Testing: I tested on native Red Hat Linux 7 using gcc 3.0.
The "info float" command exercises print_i387_value.

2001-07-06  Michael Chastain  <chastain@redhat.com>

	* i387-tdep.c (print_i387_value): Fix pointer glitch.

===

Index: i387-tdep.c
===================================================================
RCS file: /cvs/src/src/gdb/i387-tdep.c,v
retrieving revision 1.11
diff -c -1 -0 -p -r1.11 i387-tdep.c
*** gdb/i387-tdep.c	2001/07/04 21:14:05	1.11
--- gdb/i387-tdep.c	2001/07/06 12:47:00
*************** print_i387_value (char *raw)
*** 163,184 ****
    DOUBLEST value;
    int len = TARGET_LONG_DOUBLE_BIT / TARGET_CHAR_BIT;
    char *tmp = alloca (len);

    /* This code only works on targets where ... */
    gdb_assert (TARGET_LONG_DOUBLE_FORMAT == &floatformat_i387_ext);

    /* Take care of the padding.  FP reg is 80 bits.  The same value in
       memory is 96 bits.  */
    gdb_assert (FPU_REG_RAW_SIZE < len);
!   memcpy (&tmp, raw, FPU_REG_RAW_SIZE);
!   memset (&tmp + FPU_REG_RAW_SIZE, 0, len - FPU_REG_RAW_SIZE);

    /* Extract the value as a DOUBLEST.  */
    /* Use extract_floating() rather than floatformat_to_doublest().
       The latter is lossy in nature.  Once GDB gets a host/target
       independent and non-lossy FP it will become possible to bypass
       extract_floating() and call floatformat*() directly.  Note also
       the assumptions about TARGET_LONG_DOUBLE above.  */
    value = extract_floating (tmp, len);

    /* We try to print 19 digits.  The last digit may or may not contain
--- 163,184 ----
    DOUBLEST value;
    int len = TARGET_LONG_DOUBLE_BIT / TARGET_CHAR_BIT;
    char *tmp = alloca (len);

    /* This code only works on targets where ... */
    gdb_assert (TARGET_LONG_DOUBLE_FORMAT == &floatformat_i387_ext);

    /* Take care of the padding.  FP reg is 80 bits.  The same value in
       memory is 96 bits.  */
    gdb_assert (FPU_REG_RAW_SIZE < len);
!   memcpy (tmp, raw, FPU_REG_RAW_SIZE);
!   memset (tmp + FPU_REG_RAW_SIZE, 0, len - FPU_REG_RAW_SIZE);

    /* Extract the value as a DOUBLEST.  */
    /* Use extract_floating() rather than floatformat_to_doublest().
       The latter is lossy in nature.  Once GDB gets a host/target
       independent and non-lossy FP it will become possible to bypass
       extract_floating() and call floatformat*() directly.  Note also
       the assumptions about TARGET_LONG_DOUBLE above.  */
    value = extract_floating (tmp, len);

    /* We try to print 19 digits.  The last digit may or may not contain
This commit is contained in:
Michael Chastain 2001-07-07 00:14:06 +00:00
parent 0e2bc86140
commit 7f1659e652
2 changed files with 6 additions and 2 deletions
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4
gdb/ChangeLog
View File

@ -1,3 +1,7 @@
2001-07-06 Michael Chastain <chastain@redhat.com>
* i387-tdep.c (print_i387_value): Fix pointer glitch.
2001-07-07 Mark Kettenis <kettenis@gnu.org>
* lin-lwp.c (count_events_callback): Fix formatting. Turn check

4
gdb/i387-tdep.c
View File

@ -170,8 +170,8 @@ print_i387_value (char *raw)
/* Take care of the padding. FP reg is 80 bits. The same value in
memory is 96 bits. */
gdb_assert (FPU_REG_RAW_SIZE < len);
memcpy (&tmp, raw, FPU_REG_RAW_SIZE);
memset (&tmp + FPU_REG_RAW_SIZE, 0, len - FPU_REG_RAW_SIZE);
memcpy (tmp, raw, FPU_REG_RAW_SIZE);
memset (tmp + FPU_REG_RAW_SIZE, 0, len - FPU_REG_RAW_SIZE);
/* Extract the value as a DOUBLEST. */
/* Use extract_floating() rather than floatformat_to_doublest().