diff options
| author | Joseph Myers <jsm@polyomino.org.uk> | 2007-11-08 00:08:48 +0000 |
|---|---|---|
| committer | Joseph Myers <jsm@polyomino.org.uk> | 2007-11-08 00:08:48 +0000 |
| commit | a14ee758af464230ab40c1a0d9adb4c7db34a9fc (patch) | |
| tree | f480556ae46ae6c24cda20413fb033b19f9d5ca2 /gdb/ppc-linux-tdep.c | |
| parent | a86b9a85032212369aedd44ee68c9ae3680e936b (diff) | |
| download | gdb-a14ee758af464230ab40c1a0d9adb4c7db34a9fc.tar.gz | |
include:
2007-11-07 Joseph Myers <joseph@codesourcery.com>
Daniel Jacobowitz <dan@codesourcery.com>
* floatformat.h (struct floatformat): Add split_half field.
(floatformat_ibm_long_double): New.
libiberty:
2007-11-07 Joseph Myers <joseph@codesourcery.com>
Daniel Jacobowitz <dan@codesourcery.com>
* floatformat.c (mant_bits_set): New.
(floatformat_to_double): Use it. Note no special handling of
split formats.
(floatformat_from_double): Note no special handing of split
formats.
(floatformat_ibm_long_double_is_valid,
floatformat_ibm_long_double): New.
(floatformat_ieee_single_big, floatformat_ieee_single_little,
floatformat_ieee_double_big, floatformat_ieee_double_little,
floatformat_ieee_double_littlebyte_bigword, floatformat_vax_f,
floatformat_vax_d, floatformat_vax_g, floatformat_i387_ext,
floatformat_m68881_ext, floatformat_i960_ext,
floatformat_m88110_ext, floatformat_m88110_harris_ext,
floatformat_arm_ext_big, floatformat_arm_ext_littlebyte_bigword,
floatformat_ia64_spill_big, floatformat_ia64_spill_little,
floatformat_ia64_quad_big, floatformat_ia64_quad_little): Update
for addition of split_half field.
gdb:
2007-11-07 Joseph Myers <joseph@codesourcery.com>
Daniel Jacobowitz <dan@codesourcery.com>
* gdbtypes.c (floatformats_ibm_long_double): New.
* gdbtypes.h (floatformats_ibm_long_double): Declare.
* ia64-tdep.c (floatformat_ia64_ext): Update for addition of
split_half field.
* mips-tdep.c (n32n64_floatformat_always_valid,
floatformat_n32n64_long_double_big, floatformats_n32n64_long):
Remove.
(mips_gdbarch_init): Use floatformats_ibm_long_double instead of
floatformats_n32n64_long.
* ppc-linux-tdep.c (ppc_linux_init_abi): Use 128-bit IBM long
double.
* doublest.c (convert_floatformat_to_doublest,
convert_doublest_to_floatformat): Handle split floating-point
formats.
* ppc-sysv-tdep.c (ppc_sysv_abi_push_dummy_call): Handle IBM long
double arguments.
(ppc64_sysv_abi_push_dummy_call): Likewise.
(do_ppc_sysv_return_value): Handle IBM long double return.
Diffstat (limited to 'gdb/ppc-linux-tdep.c')
| -rw-r--r-- | gdb/ppc-linux-tdep.c | 16 |
1 files changed, 7 insertions, 9 deletions
diff --git a/gdb/ppc-linux-tdep.c b/gdb/ppc-linux-tdep.c index a82c95ea4d6..95d127e552d 100644 --- a/gdb/ppc-linux-tdep.c +++ b/gdb/ppc-linux-tdep.c @@ -896,15 +896,13 @@ ppc_linux_init_abi (struct gdbarch_info info, { struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch); - /* NOTE: jimb/2004-03-26: The System V ABI PowerPC Processor - Supplement says that long doubles are sixteen bytes long. - However, as one of the known warts of its ABI, PPC GNU/Linux uses - eight-byte long doubles. GCC only recently got 128-bit long - double support on PPC, so it may be changing soon. The - Linux[sic] Standards Base says that programs that use 'long - double' on PPC GNU/Linux are non-conformant. */ - /* NOTE: cagney/2005-01-25: True for both 32- and 64-bit. */ - set_gdbarch_long_double_bit (gdbarch, 8 * TARGET_CHAR_BIT); + /* PPC GNU/Linux uses either 64-bit or 128-bit long doubles; where + 128-bit, they are IBM long double, not IEEE quad long double as + in the System V ABI PowerPC Processor Supplement. We can safely + let them default to 128-bit, since the debug info will give the + size of type actually used in each case. */ + set_gdbarch_long_double_bit (gdbarch, 16 * TARGET_CHAR_BIT); + set_gdbarch_long_double_format (gdbarch, floatformats_ibm_long_double); /* Handle PPC GNU/Linux 64-bit function pointers (which are really function descriptors) and 32-bit secure PLT entries. */ |