diff options
| -rw-r--r-- | gas/config/atof-ieee.c | 20 | ||||
| -rw-r--r-- | gas/config/tc-i386.c | 3 | ||||
| -rw-r--r-- | gas/doc/c-i386.texi | 14 | ||||
| -rw-r--r-- | gas/read.c | 2 | ||||
| -rw-r--r-- | gas/testsuite/gas/i386/fp-elf32.d | 2 | ||||
| -rw-r--r-- | gas/testsuite/gas/i386/fp-elf64.d | 2 | ||||
| -rw-r--r-- | gas/testsuite/gas/i386/fp.d | 2 | ||||
| -rw-r--r-- | gas/testsuite/gas/i386/fp.s | 1 |
8 files changed, 32 insertions, 14 deletions
diff --git a/gas/config/atof-ieee.c b/gas/config/atof-ieee.c index e6e8879..7f95d05 100644 --- a/gas/config/atof-ieee.c +++ b/gas/config/atof-ieee.c @@ -27,6 +27,7 @@ extern FLONUM_TYPE generic_floating_point_number; /* Don't count the gap in the m68k extended precision format. */ #define MAX_PRECISION 5 #define H_PRECISION 1 +#define B_PRECISION 1 /* Not strictly IEEE, but handled here anyway. */ #define F_PRECISION 2 #define D_PRECISION 4 #define X_PRECISION 5 @@ -243,6 +244,12 @@ atof_ieee (char *str, /* Text to convert to binary. */ exponent_bits = 5; break; + case 'b': + case 'B': + precision = B_PRECISION; + exponent_bits = 8; + break; + case 'f': case 'F': case 's': @@ -368,9 +375,9 @@ gen_to_words (LITTLENUM_TYPE *words, int precision, long exponent_bits) as_warn (_("Infinities are not supported by this target")); /* +INF: Do the right thing. */ - if (precision == H_PRECISION) + if (precision == H_PRECISION /* also B_PRECISION */) { - words[0] = 0x7c00; + words[0] = exponent_bits == 5 ? 0x7c00 : 0x7f80; } else if (precision == F_PRECISION) { @@ -413,9 +420,9 @@ gen_to_words (LITTLENUM_TYPE *words, int precision, long exponent_bits) as_warn (_("Infinities are not supported by this target")); /* Negative INF. */ - if (precision == H_PRECISION) + if (precision == H_PRECISION /* also B_PRECISION */) { - words[0] = 0xfc00; + words[0] = exponent_bits == 5 ? 0xfc00 : 0xff80; } else if (precision == F_PRECISION) { @@ -777,6 +784,11 @@ ieee_md_atof (int type, prec = H_PRECISION; break; + case 'B': + case 'b': + prec = B_PRECISION; + break; + case 'f': case 'F': case 's': diff --git a/gas/config/tc-i386.c b/gas/config/tc-i386.c index a9e3621..dc29fa2 100644 --- a/gas/config/tc-i386.c +++ b/gas/config/tc-i386.c @@ -512,7 +512,7 @@ const char EXP_CHARS[] = "eE"; /* Chars that mean this number is a floating point constant As in 0f12.456 or 0d1.2345e12. */ -const char FLT_CHARS[] = "fFdDxXhH"; +const char FLT_CHARS[] = "fFdDxXhHbB"; /* Tables for lexical analysis. */ static char mnemonic_chars[256]; @@ -1357,6 +1357,7 @@ const pseudo_typeS md_pseudo_table[] = {"dfloat", float_cons, 'd'}, {"tfloat", float_cons, 'x'}, {"hfloat", float_cons, 'h'}, + {"bfloat16", float_cons, 'b'}, {"value", cons, 2}, {"slong", signed_cons, 4}, {"noopt", s_ignore, 0}, diff --git a/gas/doc/c-i386.texi b/gas/doc/c-i386.texi index 664237c..99576ef 100644 --- a/gas/doc/c-i386.texi +++ b/gas/doc/c-i386.texi @@ -1314,20 +1314,22 @@ data type. Constructors build these data types into memory. @cindex @code{double} directive, i386 @cindex @code{tfloat} directive, i386 @cindex @code{hfloat} directive, i386 +@cindex @code{bfloat16} directive, i386 @cindex @code{float} directive, x86-64 @cindex @code{single} directive, x86-64 @cindex @code{double} directive, x86-64 @cindex @code{tfloat} directive, x86-64 @cindex @code{hfloat} directive, x86-64 +@cindex @code{bfloat16} directive, x86-64 @itemize @bullet @item Floating point constructors are @samp{.float} or @samp{.single}, -@samp{.double}, @samp{.tfloat}, and @samp{.hfloat} for 32-, 64-, 80-, and -16-bit formats respectively. The former three correspond to instruction -mnemonic suffixes @samp{s}, @samp{l}, and @samp{t}. @samp{t} stands for -80-bit (ten byte) real. The 80387 only supports this format via the -@samp{fldt} (load 80-bit real to stack top) and @samp{fstpt} (store 80-bit -real and pop stack) instructions. +@samp{.double}, @samp{.tfloat}, @samp{.hfloat}, and @samp{.bfloat16} for 32-, +64-, 80-, and 16-bit (two flavors) formats respectively. The former three +correspond to instruction mnemonic suffixes @samp{s}, @samp{l}, and @samp{t}. +@samp{t} stands for 80-bit (ten byte) real. The 80387 only supports this +format via the @samp{fldt} (load 80-bit real to stack top) and @samp{fstpt} +(store 80-bit real and pop stack) instructions. @cindex @code{word} directive, i386 @cindex @code{long} directive, i386 @@ -4852,6 +4852,8 @@ hex_float (int float_type, char *bytes) switch (float_type) { + case 'b': + case 'B': case 'h': case 'H': length = 2; diff --git a/gas/testsuite/gas/i386/fp-elf32.d b/gas/testsuite/gas/i386/fp-elf32.d index d25eed8..798cb6b 100644 --- a/gas/testsuite/gas/i386/fp-elf32.d +++ b/gas/testsuite/gas/i386/fp-elf32.d @@ -14,4 +14,4 @@ Contents of section .data: 0060 00000000 00000080 fe3f0000 00000000 .* 0070 00000080 fdbf0000 00000000 00000080 .* 0080 ff030000 aaaaaaaa aaaaaaaa aaaaaaaa .* - 0090 003c00c0 003c5555 55555555 55555555 .* + 0090 003c00c0 003c803f 00c0803f 55555555 .* diff --git a/gas/testsuite/gas/i386/fp-elf64.d b/gas/testsuite/gas/i386/fp-elf64.d index bdc8f86..fc96e53 100644 --- a/gas/testsuite/gas/i386/fp-elf64.d +++ b/gas/testsuite/gas/i386/fp-elf64.d @@ -14,4 +14,4 @@ Contents of section .data: 0060 00000000 00000080 fe3f0000 00000000 .* 0070 00000000 00000080 fdbf0000 00000000 .* 0080 00000000 00000080 ff030000 00000000 .* - 0090 003c00c0 003c5555 55555555 55555555 .* + 0090 003c00c0 003c803f 00c0803f 55555555 .* diff --git a/gas/testsuite/gas/i386/fp.d b/gas/testsuite/gas/i386/fp.d index 65a5fcc..c2db0d2 100644 --- a/gas/testsuite/gas/i386/fp.d +++ b/gas/testsuite/gas/i386/fp.d @@ -12,4 +12,4 @@ Contents of section .data: 0050 ffffffff ffffffff ffffcccc cccccccc .* 0060 00000000 00000080 fe3f0000 00000000 .* 0070 0080fdbf 00000000 00000080 ff03aaaa .* - 0080 003c00c0 003c5555 55555555 55555555 .* + 0080 003c00c0 003c803f 00c0803f 55555555 .* diff --git a/gas/testsuite/gas/i386/fp.s b/gas/testsuite/gas/i386/fp.s index 8976dd8..8c5abb4 100644 --- a/gas/testsuite/gas/i386/fp.s +++ b/gas/testsuite/gas/i386/fp.s @@ -31,4 +31,5 @@ .p2align 4,0xaa .hfloat 1, -2, 0x:3c00 + .bfloat16 1, -2, 0x:3f80 .p2align 4,0x55 |