From 33e178064d60605b4ed0df0c907c9939872fc8a9 Mon Sep 17 00:00:00 2001 From: Joseph Myers Date: Thu, 8 Nov 2007 00:08:48 +0000 Subject: [PATCH] include: 2007-11-07 Joseph Myers Daniel Jacobowitz * floatformat.h (struct floatformat): Add split_half field. (floatformat_ibm_long_double): New. libiberty: 2007-11-07 Joseph Myers Daniel Jacobowitz * 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 Daniel Jacobowitz * 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. --- include/ChangeLog | 6 ++++++ include/floatformat.h | 9 +++++++++ 2 files changed, 15 insertions(+) diff --git a/include/ChangeLog b/include/ChangeLog index f3dc43334..1bde4c5b6 100644 --- a/include/ChangeLog +++ b/include/ChangeLog @@ -1,3 +1,9 @@ +2007-11-07 Joseph Myers + Daniel Jacobowitz + + * floatformat.h (struct floatformat): Add split_half field. + (floatformat_ibm_long_double): New. + 2007-11-05 Danny Smith * coff/pe.h (COFF_ENCODE_ALIGNMENT) Define. diff --git a/include/floatformat.h b/include/floatformat.h index f1bd7f601..c5f60a3cd 100644 --- a/include/floatformat.h +++ b/include/floatformat.h @@ -85,6 +85,13 @@ struct floatformat /* Validator method. */ int (*is_valid) (const struct floatformat *fmt, const void *from); + + /* Is the format actually the sum of two smaller floating point + formats (IBM long double, as described in + gcc/config/rs6000/darwin-ldouble-format)? If so, this is the + smaller format in question, and the fields sign_start through + intbit describe the first half. If not, this is NULL. */ + const struct floatformat *split_half; }; /* floatformats for IEEE single and double, big and little endian. */ @@ -118,6 +125,8 @@ extern const struct floatformat floatformat_ia64_spill_big; extern const struct floatformat floatformat_ia64_spill_little; extern const struct floatformat floatformat_ia64_quad_big; extern const struct floatformat floatformat_ia64_quad_little; +/* IBM long double (double+double). */ +extern const struct floatformat floatformat_ibm_long_double; /* Convert from FMT to a double. FROM is the address of the extended float.