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* mips-tdep.c: Include "floatformat.h".

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(n32n64_floatformat_always_valid): New function.
        (floatformat_n32n64_long_double_big): New constant.
        (mips_gdbarch_init): Set size and format of long double
        for N32 and N64 ABIs.
        * Makefile.in (mips-tdep.o): Update dependencies.
This commit is contained in:
Joel Brobecker 2004-08-09 05:45:20 +00:00
parent 8843416a51
commit fed7ba43e0
2 changed files with 42 additions and 0 deletions
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9
gdb/ChangeLog
View File

@ -1,3 +1,12 @@
2004-08-08 Joel Brobecker <brobecker@gnat.com>
* mips-tdep.c: Include "floatformat.h".
(n32n64_floatformat_always_valid): New function.
(floatformat_n32n64_long_double_big): New constant.
(mips_gdbarch_init): Set size and format of long double
for N32 and N64 ABIs.
* Makefile.in (mips-tdep.o): Update dependencies.
2004-08-08 Andrew Cagney <cagney@gnu.org>
* gdbarch.sh: Delete "fmt" and "attrib" fields. Always use %s to

33
gdb/mips-tdep.c
View File

@ -54,6 +54,7 @@
#include "frame-base.h"
#include "trad-frame.h"
#include "infcall.h"
#include "floatformat.h"
static const struct objfile_data *mips_pdr_data;
@ -149,6 +150,32 @@ struct gdbarch_tdep
const char **mips_processor_reg_names;
};
static int
n32n64_floatformat_always_valid (const struct floatformat *fmt,
const char *from)
{
return 1;
}
/* FIXME: brobecker/2004-08-08: Long Double values are 128 bit long.
They are implemented as a pair of 64bit doubles where the high
part holds the result of the operation rounded to double, and
the low double holds the difference between the exact result and
the rounded result. So "high" + "low" contains the result with
added precision. Unfortunately, the floatformat structure used
by GDB is not powerful enough to describe this format. As a temporary
measure, we define a 128bit floatformat that only uses the high part.
We lose a bit of precision but that's probably the best we can do
for now with the current infrastructure. */
static const struct floatformat floatformat_n32n64_long_double_big =
{
floatformat_big, 128, 0, 1, 11, 1023, 2047, 12, 52,
floatformat_intbit_no,
"floatformat_ieee_double_big",
n32n64_floatformat_always_valid
};
const struct mips_regnum *
mips_regnum (struct gdbarch *gdbarch)
{
@ -6323,6 +6350,9 @@ mips_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches)
set_gdbarch_long_bit (gdbarch, 32);
set_gdbarch_ptr_bit (gdbarch, 32);
set_gdbarch_long_long_bit (gdbarch, 64);
set_gdbarch_long_double_bit (gdbarch, 128);
set_gdbarch_long_double_format (gdbarch,
&floatformat_n32n64_long_double_big);
break;
case MIPS_ABI_N64:
set_gdbarch_push_dummy_call (gdbarch, mips_n32n64_push_dummy_call);
@ -6333,6 +6363,9 @@ mips_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches)
set_gdbarch_long_bit (gdbarch, 64);
set_gdbarch_ptr_bit (gdbarch, 64);
set_gdbarch_long_long_bit (gdbarch, 64);
set_gdbarch_long_double_bit (gdbarch, 128);
set_gdbarch_long_double_format (gdbarch,
&floatformat_n32n64_long_double_big);
break;
default:
internal_error (__FILE__, __LINE__, "unknown ABI in switch");