From f9e9243aad66a7923e30c61cd1749623fa568f79 Mon Sep 17 00:00:00 2001 From: Ulrich Weigand Date: Tue, 6 Jul 2010 12:56:24 +0000 Subject: [PATCH] include/ChangeLog: 2010-07-06 Ken Werner * floatformat.h (floatformat_ieee_half_big): Add declaration. (floatformat_ieee_half_little): Likewise. libiberty/ChangeLog: 2010-07-06 Ken Werner * floatformat.c (floatformat_ieee_half_big): New variable. (floatformat_ieee_half_little): Likewise. gdb/ChangeLog: 2010-07-06 Ken Werner * gdbtypes.h (floatformats_ieee_half): Add declaration. * gdbtypes.c (floatformats_ieee_half): New variable. * doublest.c (floatformat_from_length): Set format to gdbarch_half_format if length matches. * gdbarch.sh (half_bit): New architecture method. (half_format): Likewise. * gdbarch.h: Regenerate. * gdbarch.c: Likewise. --- gdb/ChangeLog | 11 ++++++++++ gdb/doublest.c | 5 ++++- gdb/gdbarch.c | 47 +++++++++++++++++++++++++++++++++++++++++ gdb/gdbarch.h | 12 ++++++++--- gdb/gdbarch.sh | 8 ++++--- gdb/gdbtypes.c | 4 ++++ gdb/gdbtypes.h | 1 + include/ChangeLog | 5 +++++ include/floatformat.h | 2 ++ libiberty/ChangeLog | 5 +++++ libiberty/floatformat.c | 18 +++++++++++++++- 11 files changed, 110 insertions(+), 8 deletions(-) diff --git a/gdb/ChangeLog b/gdb/ChangeLog index 061bf554b7d..375f0553f92 100644 --- a/gdb/ChangeLog +++ b/gdb/ChangeLog @@ -1,3 +1,14 @@ +2010-07-06 Ken Werner + + * gdbtypes.h (floatformats_ieee_half): Add declaration. + * gdbtypes.c (floatformats_ieee_half): New variable. + * doublest.c (floatformat_from_length): Set format to + gdbarch_half_format if length matches. + * gdbarch.sh (half_bit): New architecture method. + (half_format): Likewise. + * gdbarch.h: Regenerate. + * gdbarch.c: Likewise. + 2010-07-05 Jan Kratochvil Joel Brobecker diff --git a/gdb/doublest.c b/gdb/doublest.c index 0dc09ab9b9b..7e8b34345f9 100644 --- a/gdb/doublest.c +++ b/gdb/doublest.c @@ -777,7 +777,10 @@ floatformat_from_length (struct gdbarch *gdbarch, int len) { const struct floatformat *format; - if (len * TARGET_CHAR_BIT == gdbarch_float_bit (gdbarch)) + if (len * TARGET_CHAR_BIT == gdbarch_half_bit (gdbarch)) + format = gdbarch_half_format (gdbarch) + [gdbarch_byte_order (gdbarch)]; + else if (len * TARGET_CHAR_BIT == gdbarch_float_bit (gdbarch)) format = gdbarch_float_format (gdbarch) [gdbarch_byte_order (gdbarch)]; else if (len * TARGET_CHAR_BIT == gdbarch_double_bit (gdbarch)) diff --git a/gdb/gdbarch.c b/gdb/gdbarch.c index bf41ab3441c..103abcb66c9 100644 --- a/gdb/gdbarch.c +++ b/gdb/gdbarch.c @@ -145,6 +145,8 @@ struct gdbarch int int_bit; int long_bit; int long_long_bit; + int half_bit; + const struct floatformat ** half_format; int float_bit; const struct floatformat ** float_format; int double_bit; @@ -293,6 +295,8 @@ struct gdbarch startup_gdbarch = 8 * sizeof (int), /* int_bit */ 8 * sizeof (long), /* long_bit */ 8 * sizeof (LONGEST), /* long_long_bit */ + 16, /* half_bit */ + 0, /* half_format */ 8 * sizeof (float), /* float_bit */ 0, /* float_format */ 8 * sizeof (double), /* double_bit */ @@ -451,6 +455,7 @@ gdbarch_alloc (const struct gdbarch_info *info, gdbarch->int_bit = 4*TARGET_CHAR_BIT; gdbarch->long_bit = 4*TARGET_CHAR_BIT; gdbarch->long_long_bit = 2*gdbarch->long_bit; + gdbarch->half_bit = 2*TARGET_CHAR_BIT; gdbarch->float_bit = 4*TARGET_CHAR_BIT; gdbarch->double_bit = 8*TARGET_CHAR_BIT; gdbarch->long_double_bit = 8*TARGET_CHAR_BIT; @@ -562,6 +567,9 @@ verify_gdbarch (struct gdbarch *gdbarch) /* Skip verify of int_bit, invalid_p == 0 */ /* Skip verify of long_bit, invalid_p == 0 */ /* Skip verify of long_long_bit, invalid_p == 0 */ + /* Skip verify of half_bit, invalid_p == 0 */ + if (gdbarch->half_format == 0) + gdbarch->half_format = floatformats_ieee_half; /* Skip verify of float_bit, invalid_p == 0 */ if (gdbarch->float_format == 0) gdbarch->float_format = floatformats_ieee_single; @@ -934,6 +942,12 @@ gdbarch_dump (struct gdbarch *gdbarch, struct ui_file *file) fprintf_unfiltered (file, "gdbarch_dump: get_syscall_number = <%s>\n", host_address_to_string (gdbarch->get_syscall_number)); + fprintf_unfiltered (file, + "gdbarch_dump: half_bit = %s\n", + plongest (gdbarch->half_bit)); + fprintf_unfiltered (file, + "gdbarch_dump: half_format = %s\n", + pformat (gdbarch->half_format)); fprintf_unfiltered (file, "gdbarch_dump: has_dos_based_file_system = %s\n", plongest (gdbarch->has_dos_based_file_system)); @@ -1374,6 +1388,39 @@ set_gdbarch_long_long_bit (struct gdbarch *gdbarch, gdbarch->long_long_bit = long_long_bit; } +int +gdbarch_half_bit (struct gdbarch *gdbarch) +{ + gdb_assert (gdbarch != NULL); + /* Skip verify of half_bit, invalid_p == 0 */ + if (gdbarch_debug >= 2) + fprintf_unfiltered (gdb_stdlog, "gdbarch_half_bit called\n"); + return gdbarch->half_bit; +} + +void +set_gdbarch_half_bit (struct gdbarch *gdbarch, + int half_bit) +{ + gdbarch->half_bit = half_bit; +} + +const struct floatformat ** +gdbarch_half_format (struct gdbarch *gdbarch) +{ + gdb_assert (gdbarch != NULL); + if (gdbarch_debug >= 2) + fprintf_unfiltered (gdb_stdlog, "gdbarch_half_format called\n"); + return gdbarch->half_format; +} + +void +set_gdbarch_half_format (struct gdbarch *gdbarch, + const struct floatformat ** half_format) +{ + gdbarch->half_format = half_format; +} + int gdbarch_float_bit (struct gdbarch *gdbarch) { diff --git a/gdb/gdbarch.h b/gdb/gdbarch.h index e0c933cb469..cfc777ee1d6 100644 --- a/gdb/gdbarch.h +++ b/gdb/gdbarch.h @@ -118,12 +118,18 @@ extern void set_gdbarch_long_bit (struct gdbarch *gdbarch, int long_bit); extern int gdbarch_long_long_bit (struct gdbarch *gdbarch); extern void set_gdbarch_long_long_bit (struct gdbarch *gdbarch, int long_long_bit); -/* The ABI default bit-size and format for "float", "double", and "long - double". These bit/format pairs should eventually be combined into - a single object. For the moment, just initialize them as a pair. +/* The ABI default bit-size and format for "half", "float", "double", and + "long double". These bit/format pairs should eventually be combined + into a single object. For the moment, just initialize them as a pair. Each format describes both the big and little endian layouts (if useful). */ +extern int gdbarch_half_bit (struct gdbarch *gdbarch); +extern void set_gdbarch_half_bit (struct gdbarch *gdbarch, int half_bit); + +extern const struct floatformat ** gdbarch_half_format (struct gdbarch *gdbarch); +extern void set_gdbarch_half_format (struct gdbarch *gdbarch, const struct floatformat ** half_format); + extern int gdbarch_float_bit (struct gdbarch *gdbarch); extern void set_gdbarch_float_bit (struct gdbarch *gdbarch, int float_bit); diff --git a/gdb/gdbarch.sh b/gdb/gdbarch.sh index 1e9a4893831..eece393c990 100755 --- a/gdb/gdbarch.sh +++ b/gdb/gdbarch.sh @@ -363,12 +363,14 @@ v:int:long_bit:::8 * sizeof (long):4*TARGET_CHAR_BIT::0 # machine. v:int:long_long_bit:::8 * sizeof (LONGEST):2*gdbarch->long_bit::0 -# The ABI default bit-size and format for "float", "double", and "long -# double". These bit/format pairs should eventually be combined into -# a single object. For the moment, just initialize them as a pair. +# The ABI default bit-size and format for "half", "float", "double", and +# "long double". These bit/format pairs should eventually be combined +# into a single object. For the moment, just initialize them as a pair. # Each format describes both the big and little endian layouts (if # useful). +v:int:half_bit:::16:2*TARGET_CHAR_BIT::0 +v:const struct floatformat **:half_format:::::floatformats_ieee_half::pformat (gdbarch->half_format) v:int:float_bit:::8 * sizeof (float):4*TARGET_CHAR_BIT::0 v:const struct floatformat **:float_format:::::floatformats_ieee_single::pformat (gdbarch->float_format) v:int:double_bit:::8 * sizeof (double):8*TARGET_CHAR_BIT::0 diff --git a/gdb/gdbtypes.c b/gdb/gdbtypes.c index ba8c7e41243..443f6f7a10c 100644 --- a/gdb/gdbtypes.c +++ b/gdb/gdbtypes.c @@ -42,6 +42,10 @@ /* Floatformat pairs. */ +const struct floatformat *floatformats_ieee_half[BFD_ENDIAN_UNKNOWN] = { + &floatformat_ieee_half_big, + &floatformat_ieee_half_little +}; const struct floatformat *floatformats_ieee_single[BFD_ENDIAN_UNKNOWN] = { &floatformat_ieee_single_big, &floatformat_ieee_single_little diff --git a/gdb/gdbtypes.h b/gdb/gdbtypes.h index 2a9bc9bd046..085270e21d2 100644 --- a/gdb/gdbtypes.h +++ b/gdb/gdbtypes.h @@ -1191,6 +1191,7 @@ extern const struct objfile_type *objfile_type (struct objfile *objfile); /* Explicit floating-point formats. See "floatformat.h". */ +extern const struct floatformat *floatformats_ieee_half[BFD_ENDIAN_UNKNOWN]; extern const struct floatformat *floatformats_ieee_single[BFD_ENDIAN_UNKNOWN]; extern const struct floatformat *floatformats_ieee_double[BFD_ENDIAN_UNKNOWN]; extern const struct floatformat *floatformats_ieee_double_littlebyte_bigword[BFD_ENDIAN_UNKNOWN]; diff --git a/include/ChangeLog b/include/ChangeLog index 4fb2a44894c..91b2edbed0f 100644 --- a/include/ChangeLog +++ b/include/ChangeLog @@ -1,3 +1,8 @@ +2010-07-06 Ken Werner + + * floatformat.h (floatformat_ieee_half_big): Add declaration. + (floatformat_ieee_half_little): Likewise. + 2010-06-29 Alan Modra * dis-asm.h: Remove references to maxq. diff --git a/include/floatformat.h b/include/floatformat.h index c5f60a3cd93..0fc8e75dc8b 100644 --- a/include/floatformat.h +++ b/include/floatformat.h @@ -96,6 +96,8 @@ struct floatformat /* floatformats for IEEE single and double, big and little endian. */ +extern const struct floatformat floatformat_ieee_half_big; +extern const struct floatformat floatformat_ieee_half_little; extern const struct floatformat floatformat_ieee_single_big; extern const struct floatformat floatformat_ieee_single_little; extern const struct floatformat floatformat_ieee_double_big; diff --git a/libiberty/ChangeLog b/libiberty/ChangeLog index a16e393d027..1b1610b6929 100644 --- a/libiberty/ChangeLog +++ b/libiberty/ChangeLog @@ -1,3 +1,8 @@ +2010-07-06 Ken Werner + + * floatformat.c (floatformat_ieee_half_big): New variable. + (floatformat_ieee_half_little): Likewise. + 2010-06-14 Gerald Pfeifer * libiberty.texi: Remove reference to GCC 3 and 2001 (thrice). diff --git a/libiberty/floatformat.c b/libiberty/floatformat.c index cbf13ea3406..4819507cbdd 100644 --- a/libiberty/floatformat.c +++ b/libiberty/floatformat.c @@ -77,7 +77,23 @@ floatformat_always_valid (const struct floatformat *fmt ATTRIBUTE_UNUSED, a system header, what we do if not, etc. */ #define FLOATFORMAT_CHAR_BIT 8 -/* floatformats for IEEE single and double, big and little endian. */ +/* floatformats for IEEE half, single and double, big and little endian. */ +const struct floatformat floatformat_ieee_half_big = +{ + floatformat_big, 16, 0, 1, 5, 15, 31, 6, 10, + floatformat_intbit_no, + "floatformat_ieee_half_big", + floatformat_always_valid, + NULL +}; +const struct floatformat floatformat_ieee_half_little = +{ + floatformat_little, 16, 0, 1, 5, 15, 31, 6, 10, + floatformat_intbit_no, + "floatformat_ieee_half_little", + floatformat_always_valid, + NULL +}; const struct floatformat floatformat_ieee_single_big = { floatformat_big, 32, 0, 1, 8, 127, 255, 9, 23, -- 2.39.2