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-rw-r--r--gdb/ChangeLog21
-rw-r--r--gdb/features/i386/64bit-avx512.c5
-rw-r--r--gdb/features/i386/64bit-avx512.xml4
-rw-r--r--gdb/features/i386/64bit-sse.c5
-rw-r--r--gdb/features/i386/64bit-sse.xml2
-rw-r--r--gdb/gdbarch.c45
-rw-r--r--gdb/gdbarch.h8
-rwxr-xr-xgdb/gdbarch.sh4
-rw-r--r--gdb/gdbtypes.c7
-rw-r--r--gdb/gdbtypes.h3
-rw-r--r--gdb/i386-tdep.c9
-rw-r--r--gdb/target-descriptions.c5
-rw-r--r--gdb/testsuite/ChangeLog7
-rw-r--r--gdb/testsuite/gdb.arch/x86-avx512bf16.c164
-rw-r--r--gdb/testsuite/gdb.arch/x86-avx512bf16.exp74
-rw-r--r--gdb/testsuite/lib/gdb.exp51
-rw-r--r--gdbsupport/tdesc.cc3
-rw-r--r--gdbsupport/tdesc.h1
18 files changed, 413 insertions, 5 deletions
diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index b3e3d59..6b1563a 100644
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,3 +1,24 @@
+2020-09-11 Moritz Riesterer <moritz.riesterer@intel.com>
+ Felix Willgerodt <Felix.Willgerodt@intel.com>
+
+ * gdbarch.sh: Added bfloat16 type.
+ * gdbarch.c: Regenerated.
+ * gdbarch.h: Regenerated.
+ * gdbtypes.c (floatformats_bfloat16): New struct.
+ (gdbtypes_post_init): Add builtin_bfloat16.
+ * gdbtypes.h (struct builtin_type) <builtin_bfloat16>: New member.
+ (floatformats_bfloat16): New struct.
+ * i386-tdep.c (i386_zmm_type): Add field "v32_bfloat16"
+ (i386_ymm_type): Add field "v16_bfloat16"
+ (i386_gdbarch_init): Add set_gdbarch_bfloat16_format.
+ * target-descriptions.c (make_gdb_type): Add case TDESC_TYPE_BFLOAT16.
+ * gdbsupport/tdesc.cc (tdesc_predefined_types): New member bfloat16.
+ * gdbsupport/tdesc.h (tdesc_type_kind): New member TDESC_TYPE_BFLOAT16.
+ * features/i386/64bit-avx512.xml: Add bfloat16 type.
+ * features/i386/64bit-avx512.c: Regenerated.
+ * features/i386/64bit-sse.xml: Add bfloat16 type.
+ * features/i386/64bit-sse.c: Regenerated.
+
2020-09-11 Felix Willgerodt <felix.willgerodt@intel.com>
* i386-tdep.c (i386_zmm_type): Fix field names.
diff --git a/gdb/features/i386/64bit-avx512.c b/gdb/features/i386/64bit-avx512.c
index d12234c..1bd49dc 100644
--- a/gdb/features/i386/64bit-avx512.c
+++ b/gdb/features/i386/64bit-avx512.c
@@ -10,6 +10,9 @@ create_feature_i386_64bit_avx512 (struct target_desc *result, long regnum)
feature = tdesc_create_feature (result, "org.gnu.gdb.i386.avx512");
tdesc_type *element_type;
+ element_type = tdesc_named_type (feature, "bfloat16");
+ tdesc_create_vector (feature, "v8bf16", element_type, 8);
+
element_type = tdesc_named_type (feature, "ieee_single");
tdesc_create_vector (feature, "v4f", element_type, 4);
@@ -31,6 +34,8 @@ create_feature_i386_64bit_avx512 (struct target_desc *result, long regnum)
tdesc_type_with_fields *type_with_fields;
type_with_fields = tdesc_create_union (feature, "vec128");
tdesc_type *field_type;
+ field_type = tdesc_named_type (feature, "v8bf16");
+ tdesc_add_field (type_with_fields, "v8_bfloat16", field_type);
field_type = tdesc_named_type (feature, "v4f");
tdesc_add_field (type_with_fields, "v4_float", field_type);
field_type = tdesc_named_type (feature, "v2d");
diff --git a/gdb/features/i386/64bit-avx512.xml b/gdb/features/i386/64bit-avx512.xml
index 4f02136..3636121 100644
--- a/gdb/features/i386/64bit-avx512.xml
+++ b/gdb/features/i386/64bit-avx512.xml
@@ -7,13 +7,15 @@
<!DOCTYPE feature SYSTEM "gdb-target.dtd">
<feature name="org.gnu.gdb.i386.avx512">
-<vector id="v4f" type="ieee_single" count="4"/>
+ <vector id="v8bf16" type="bfloat16" count="8"/>
+ <vector id="v4f" type="ieee_single" count="4"/>
<vector id="v2d" type="ieee_double" count="2"/>
<vector id="v16i8" type="int8" count="16"/>
<vector id="v8i16" type="int16" count="8"/>
<vector id="v4i32" type="int32" count="4"/>
<vector id="v2i64" type="int64" count="2"/>
<union id="vec128">
+ <field name="v8_bfloat16" type="v8bf16"/>
<field name="v4_float" type="v4f"/>
<field name="v2_double" type="v2d"/>
<field name="v16_int8" type="v16i8"/>
diff --git a/gdb/features/i386/64bit-sse.c b/gdb/features/i386/64bit-sse.c
index 48b5aa0..645e314 100644
--- a/gdb/features/i386/64bit-sse.c
+++ b/gdb/features/i386/64bit-sse.c
@@ -10,6 +10,9 @@ create_feature_i386_64bit_sse (struct target_desc *result, long regnum)
feature = tdesc_create_feature (result, "org.gnu.gdb.i386.sse");
tdesc_type *element_type;
+ element_type = tdesc_named_type (feature, "bfloat16");
+ tdesc_create_vector (feature, "v8bf16", element_type, 8);
+
element_type = tdesc_named_type (feature, "ieee_single");
tdesc_create_vector (feature, "v4f", element_type, 4);
@@ -31,6 +34,8 @@ create_feature_i386_64bit_sse (struct target_desc *result, long regnum)
tdesc_type_with_fields *type_with_fields;
type_with_fields = tdesc_create_union (feature, "vec128");
tdesc_type *field_type;
+ field_type = tdesc_named_type (feature, "v8bf16");
+ tdesc_add_field (type_with_fields, "v8_bfloat16", field_type);
field_type = tdesc_named_type (feature, "v4f");
tdesc_add_field (type_with_fields, "v4_float", field_type);
field_type = tdesc_named_type (feature, "v2d");
diff --git a/gdb/features/i386/64bit-sse.xml b/gdb/features/i386/64bit-sse.xml
index 4ec1e7c..e3dec54 100644
--- a/gdb/features/i386/64bit-sse.xml
+++ b/gdb/features/i386/64bit-sse.xml
@@ -7,6 +7,7 @@
<!DOCTYPE feature SYSTEM "gdb-target.dtd">
<feature name="org.gnu.gdb.i386.sse">
+ <vector id="v8bf16" type="bfloat16" count="8"/>
<vector id="v4f" type="ieee_single" count="4"/>
<vector id="v2d" type="ieee_double" count="2"/>
<vector id="v16i8" type="int8" count="16"/>
@@ -14,6 +15,7 @@
<vector id="v4i32" type="int32" count="4"/>
<vector id="v2i64" type="int64" count="2"/>
<union id="vec128">
+ <field name="v8_bfloat16" type="v8bf16"/>
<field name="v4_float" type="v4f"/>
<field name="v2_double" type="v2d"/>
<field name="v16_int8" type="v16i8"/>
diff --git a/gdb/gdbarch.c b/gdb/gdbarch.c
index f8fe03c..062c86b 100644
--- a/gdb/gdbarch.c
+++ b/gdb/gdbarch.c
@@ -166,6 +166,8 @@ struct gdbarch
int int_bit;
int long_bit;
int long_long_bit;
+ int bfloat16_bit;
+ const struct floatformat ** bfloat16_format;
int half_bit;
const struct floatformat ** half_format;
int float_bit;
@@ -383,6 +385,7 @@ 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->bfloat16_bit = 2*TARGET_CHAR_BIT;
gdbarch->half_bit = 2*TARGET_CHAR_BIT;
gdbarch->float_bit = 4*TARGET_CHAR_BIT;
gdbarch->double_bit = 8*TARGET_CHAR_BIT;
@@ -523,6 +526,9 @@ 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 bfloat16_bit, invalid_p == 0 */
+ if (gdbarch->bfloat16_format == 0)
+ gdbarch->bfloat16_format = floatformats_bfloat16;
/* Skip verify of half_bit, invalid_p == 0 */
if (gdbarch->half_format == 0)
gdbarch->half_format = floatformats_ieee_half;
@@ -808,6 +814,12 @@ gdbarch_dump (struct gdbarch *gdbarch, struct ui_file *file)
"gdbarch_dump: bfd_arch_info = %s\n",
gdbarch_bfd_arch_info (gdbarch)->printable_name);
fprintf_unfiltered (file,
+ "gdbarch_dump: bfloat16_bit = %s\n",
+ plongest (gdbarch->bfloat16_bit));
+ fprintf_unfiltered (file,
+ "gdbarch_dump: bfloat16_format = %s\n",
+ pformat (gdbarch->bfloat16_format));
+ fprintf_unfiltered (file,
"gdbarch_dump: breakpoint_from_pc = <%s>\n",
host_address_to_string (gdbarch->breakpoint_from_pc));
fprintf_unfiltered (file,
@@ -1621,6 +1633,39 @@ set_gdbarch_long_long_bit (struct gdbarch *gdbarch,
}
int
+gdbarch_bfloat16_bit (struct gdbarch *gdbarch)
+{
+ gdb_assert (gdbarch != NULL);
+ /* Skip verify of bfloat16_bit, invalid_p == 0 */
+ if (gdbarch_debug >= 2)
+ fprintf_unfiltered (gdb_stdlog, "gdbarch_bfloat16_bit called\n");
+ return gdbarch->bfloat16_bit;
+}
+
+void
+set_gdbarch_bfloat16_bit (struct gdbarch *gdbarch,
+ int bfloat16_bit)
+{
+ gdbarch->bfloat16_bit = bfloat16_bit;
+}
+
+const struct floatformat **
+gdbarch_bfloat16_format (struct gdbarch *gdbarch)
+{
+ gdb_assert (gdbarch != NULL);
+ if (gdbarch_debug >= 2)
+ fprintf_unfiltered (gdb_stdlog, "gdbarch_bfloat16_format called\n");
+ return gdbarch->bfloat16_format;
+}
+
+void
+set_gdbarch_bfloat16_format (struct gdbarch *gdbarch,
+ const struct floatformat ** bfloat16_format)
+{
+ gdbarch->bfloat16_format = bfloat16_format;
+}
+
+int
gdbarch_half_bit (struct gdbarch *gdbarch)
{
gdb_assert (gdbarch != NULL);
diff --git a/gdb/gdbarch.h b/gdb/gdbarch.h
index 7a3060e..87e55fa 100644
--- a/gdb/gdbarch.h
+++ b/gdb/gdbarch.h
@@ -158,12 +158,18 @@ 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 "half", "float", "double", and
+/* The ABI default bit-size and format for "bfloat16", "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_bfloat16_bit (struct gdbarch *gdbarch);
+extern void set_gdbarch_bfloat16_bit (struct gdbarch *gdbarch, int bfloat16_bit);
+
+extern const struct floatformat ** gdbarch_bfloat16_format (struct gdbarch *gdbarch);
+extern void set_gdbarch_bfloat16_format (struct gdbarch *gdbarch, const struct floatformat ** bfloat16_format);
+
extern int gdbarch_half_bit (struct gdbarch *gdbarch);
extern void set_gdbarch_half_bit (struct gdbarch *gdbarch, int half_bit);
diff --git a/gdb/gdbarch.sh b/gdb/gdbarch.sh
index 6d3c5c8..8d22160 100755
--- a/gdb/gdbarch.sh
+++ b/gdb/gdbarch.sh
@@ -325,12 +325,14 @@ 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 "half", "float", "double", and
+# The ABI default bit-size and format for "bfloat16", "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;bfloat16_bit;;;16;2*TARGET_CHAR_BIT;;0
+v;const struct floatformat **;bfloat16_format;;;;;floatformats_bfloat16;;pformat (gdbarch->bfloat16_format)
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
diff --git a/gdb/gdbtypes.c b/gdb/gdbtypes.c
index ab44ec3..b7c8ec8 100644
--- a/gdb/gdbtypes.c
+++ b/gdb/gdbtypes.c
@@ -115,6 +115,10 @@ const struct floatformat *floatformats_ibm_long_double[BFD_ENDIAN_UNKNOWN] = {
&floatformat_ibm_long_double_big,
&floatformat_ibm_long_double_little
};
+const struct floatformat *floatformats_bfloat16[BFD_ENDIAN_UNKNOWN] = {
+ &floatformat_bfloat16_big,
+ &floatformat_bfloat16_little
+};
/* Should opaque types be resolved? */
@@ -5760,6 +5764,9 @@ gdbtypes_post_init (struct gdbarch *gdbarch)
builtin_type->builtin_float
= arch_float_type (gdbarch, gdbarch_float_bit (gdbarch),
"float", gdbarch_float_format (gdbarch));
+ builtin_type->builtin_bfloat16
+ = arch_float_type (gdbarch, gdbarch_bfloat16_bit (gdbarch),
+ "bfloat16", gdbarch_bfloat16_format (gdbarch));
builtin_type->builtin_double
= arch_float_type (gdbarch, gdbarch_double_bit (gdbarch),
"double", gdbarch_double_format (gdbarch));
diff --git a/gdb/gdbtypes.h b/gdb/gdbtypes.h
index b02f667..9c2059d 100644
--- a/gdb/gdbtypes.h
+++ b/gdb/gdbtypes.h
@@ -1847,6 +1847,7 @@ struct builtin_type
struct type *builtin_unsigned_short;
struct type *builtin_unsigned_int;
struct type *builtin_unsigned_long;
+ struct type *builtin_bfloat16;
struct type *builtin_half;
struct type *builtin_float;
struct type *builtin_double;
@@ -1981,7 +1982,7 @@ extern const struct floatformat *floatformats_ia64_quad[BFD_ENDIAN_UNKNOWN];
extern const struct floatformat *floatformats_vax_f[BFD_ENDIAN_UNKNOWN];
extern const struct floatformat *floatformats_vax_d[BFD_ENDIAN_UNKNOWN];
extern const struct floatformat *floatformats_ibm_long_double[BFD_ENDIAN_UNKNOWN];
-
+extern const struct floatformat *floatformats_bfloat16[BFD_ENDIAN_UNKNOWN];
/* Allocate space for storing data associated with a particular
type. We ensure that the space is allocated using the same
diff --git a/gdb/i386-tdep.c b/gdb/i386-tdep.c
index 322d2a4..1b7971c 100644
--- a/gdb/i386-tdep.c
+++ b/gdb/i386-tdep.c
@@ -3112,6 +3112,7 @@ i386_zmm_type (struct gdbarch *gdbarch)
int8_t v64_int8[64];
double v8_double[8];
float v16_float[16];
+ bfloat16_t v32_bfloat16[32];
};
#endif
@@ -3119,6 +3120,8 @@ i386_zmm_type (struct gdbarch *gdbarch)
t = arch_composite_type (gdbarch,
"__gdb_builtin_type_vec512i", TYPE_CODE_UNION);
+ append_composite_type_field (t, "v32_bfloat16",
+ init_vector_type (bt->builtin_bfloat16, 32));
append_composite_type_field (t, "v16_float",
init_vector_type (bt->builtin_float, 16));
append_composite_type_field (t, "v8_double",
@@ -3165,6 +3168,7 @@ i386_ymm_type (struct gdbarch *gdbarch)
int8_t v32_int8[32];
double v4_double[4];
float v8_float[8];
+ bfloat16_t v16_bfloat16[16];
};
#endif
@@ -3172,6 +3176,8 @@ i386_ymm_type (struct gdbarch *gdbarch)
t = arch_composite_type (gdbarch,
"__gdb_builtin_type_vec256i", TYPE_CODE_UNION);
+ append_composite_type_field (t, "v16_bfloat16",
+ init_vector_type (bt->builtin_bfloat16, 16));
append_composite_type_field (t, "v8_float",
init_vector_type (bt->builtin_float, 8));
append_composite_type_field (t, "v4_double",
@@ -8487,6 +8493,9 @@ i386_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches)
alignment. */
set_gdbarch_long_double_bit (gdbarch, 96);
+ /* Support of bfloat16 format. */
+ set_gdbarch_bfloat16_format (gdbarch, floatformats_bfloat16);
+
/* Support for floating-point data type variants. */
set_gdbarch_floatformat_for_type (gdbarch, i386_floatformat_for_type);
diff --git a/gdb/target-descriptions.c b/gdb/target-descriptions.c
index 20d624c..6778b93 100644
--- a/gdb/target-descriptions.c
+++ b/gdb/target-descriptions.c
@@ -141,6 +141,11 @@ make_gdb_type (struct gdbarch *gdbarch, struct tdesc_type *ttype)
m_type = arch_float_type (m_gdbarch, -1, "builtin_type_i387_ext",
floatformats_i387_ext);
return;
+
+ case TDESC_TYPE_BFLOAT16:
+ m_type = arch_float_type (m_gdbarch, -1, "builtin_type_bfloat16",
+ floatformats_bfloat16);
+ return;
}
internal_error (__FILE__, __LINE__,
diff --git a/gdb/testsuite/ChangeLog b/gdb/testsuite/ChangeLog
index 6b2055d..9b150b6 100644
--- a/gdb/testsuite/ChangeLog
+++ b/gdb/testsuite/ChangeLog
@@ -1,3 +1,10 @@
+2020-09-11 Moritz Riesterer <moritz.riesterer@intel.com>
+ Felix Willgerodt <Felix.Willgerodt@intel.com>
+
+ * x86-avx512bf16.c: New file.
+ * x86-avx512bf16.exp: Likewise.
+ * lib/gdb.exp (skip_avx512bf16_tests): New function.
+
2020-09-11 Tom de Vries <tdevries@suse.de>
PR exp/26602
diff --git a/gdb/testsuite/gdb.arch/x86-avx512bf16.c b/gdb/testsuite/gdb.arch/x86-avx512bf16.c
new file mode 100644
index 0000000..615cd12
--- /dev/null
+++ b/gdb/testsuite/gdb.arch/x86-avx512bf16.c
@@ -0,0 +1,164 @@
+/* Test program for bfloat16 of AVX 512 registers.
+
+ Copyright 2020 Free Software Foundation, Inc.
+
+ This file is part of GDB.
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 3 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see <http://www.gnu.org/licenses/>. */
+
+typedef struct
+{
+ float f[4];
+} v4sd_t;
+
+typedef struct
+{
+ float f[8];
+} v8sd_t;
+
+typedef struct
+{
+ float f[16];
+} v16sd_t;
+
+v4sd_t xmm_data[] =
+{
+ { { 0.0, 0.125, 0.25, 0.375 } },
+ { { 0.5, 0.625, 0.75, 0.875 } },
+ { { 1.0, 1.125, 1.25, 1.375 } },
+ { { 1.5, 1.625, 1.75, 1.875 } },
+ { { 2.0, 2.125, 2.25, 2.375 } },
+ { { 2.5, 2.625, 2.75, 2.875 } },
+ { { 3.0, 3.125, 3.25, 3.375 } },
+ { { 3.5, 3.625, 3.75, 3.875 } },
+};
+
+v8sd_t ymm_data[] =
+{
+ { { 8.0, 8.25, 8.5, 8.75, 9.0, 9.25, 9.5, 9.75 } },
+ { { 10.0, 10.25, 10.5, 10.75, 11.0, 11.25, 11.5, 11.75 } },
+ { { 12.0, 12.25, 12.5, 12.75, 13.0, 13.25, 13.5, 13.75 } },
+ { { 14.0, 14.25, 14.5, 14.75, 15.0, 15.25, 15.5, 15.75 } },
+ { { 16.0, 16.25, 16.5, 16.75, 17.0, 17.25, 17.5, 17.75 } },
+ { { 18.0, 18.25, 18.5, 18.75, 19.0, 19.25, 19.5, 19.75 } },
+ { { 20.0, 20.25, 20.5, 20.75, 21.0, 21.25, 21.5, 21.75 } },
+ { { 22.0, 22.25, 22.5, 22.75, 23.0, 23.25, 23.5, 23.75 } },
+};
+
+v16sd_t zmm_data[] =
+{
+ { { 20.0, 20.5, 21.0, 21.5, 22.0, 22.5, 23.0, 23.5, 24.0, 24.5,
+ 25.0, 25.5, 26.0, 26.5, 27.0, 27.5 } },
+ { { 28.0, 28.5, 29.0, 29.5, 30.0, 30.5, 31.0, 31.5, 32.0, 32.5,
+ 33.0, 33.5, 34.0, 34.5, 35.0, 35.5 } },
+ { { 36.0, 36.5, 37.0, 37.5, 38.0, 38.5, 39.0, 39.5, 40.0, 40.5,
+ 41.0, 41.5, 42.0, 42.5, 43.0, 43.5 } },
+ { { 44.0, 44.5, 45.0, 45.5, 46.0, 46.5, 47.0, 47.5, 48.0, 48.5,
+ 49.0, 49.5, 50.0, 50.5, 51.0, 51.5 } },
+ { { 52.0, 52.5, 53.0, 53.5, 54.0, 54.5, 55.0, 55.5, 56.0, 56.5,
+ 57.0, 57.5, 58.0, 58.5, 59.0, 59.5 } },
+ { { 60.0, 60.5, 61.0, 61.5, 62.0, 62.5, 63.0, 63.5, 64.0, 64.5,
+ 65.0, 65.5, 66.0, 66.5, 67.0, 67.5 } },
+ { { 68.0, 68.5, 69.0, 69.5, 70.0, 70.5, 71.0, 71.5, 72.0, 72.5,
+ 73.0, 73.5, 74.0, 74.5, 75.0, 75.5 } },
+ { { 76.0, 76.5, 77.0, 77.5, 78.0, 78.5, 79.0, 79.5, 80.0, 80.5,
+ 81.0, 81.5, 82.0, 82.5, 83.0, 83.5 } },
+};
+
+void
+move_data_to_xmm_reg (void)
+{
+ asm ("vmovups 0(%0), %%xmm0 \n\t"
+ "vmovups 16(%0), %%xmm1 \n\t"
+ "vmovups 32(%0), %%xmm2 \n\t"
+ "vmovups 48(%0), %%xmm3 \n\t"
+ "vmovups 64(%0), %%xmm4 \n\t"
+ "vmovups 80(%0), %%xmm5 \n\t"
+ "vmovups 96(%0), %%xmm6 \n\t"
+ "vmovups 112(%0), %%xmm7 \n\t"
+ : /* no output operands */
+ : "r" (xmm_data));
+}
+
+void
+move_data_to_ymm_reg (void)
+{
+ asm ("vmovups 0(%0), %%ymm0 \n\t"
+ "vmovups 32(%0), %%ymm1 \n\t"
+ "vmovups 64(%0), %%ymm2 \n\t"
+ "vmovups 96(%0), %%ymm3 \n\t"
+ "vmovups 128(%0), %%ymm4 \n\t"
+ "vmovups 160(%0), %%ymm5 \n\t"
+ "vmovups 192(%0), %%ymm6 \n\t"
+ "vmovups 224(%0), %%ymm7 \n\t"
+ : /* no output operands */
+ : "r" (ymm_data));
+}
+
+void
+move_data_to_zmm_reg (void)
+{
+ asm ("vmovups 0(%0), %%zmm0 \n\t"
+ "vmovups 64(%0), %%zmm1 \n\t"
+ "vmovups 128(%0), %%zmm2 \n\t"
+ "vmovups 192(%0), %%zmm3 \n\t"
+ "vmovups 256(%0), %%zmm4 \n\t"
+ "vmovups 320(%0), %%zmm5 \n\t"
+ "vmovups 384(%0), %%zmm6 \n\t"
+ "vmovups 448(%0), %%zmm7 \n\t"
+ : /* no output operands */
+ : "r" (zmm_data));
+}
+
+void
+convert_xmm_from_float_to_bfloat16 (void)
+{
+ asm("vcvtne2ps2bf16 %xmm0, %xmm1, %xmm0");
+ asm("vcvtne2ps2bf16 %xmm6, %xmm7, %xmm6");
+}
+
+void
+convert_ymm_from_float_to_bfloat16 (void)
+{
+ asm("vcvtne2ps2bf16 %ymm0, %ymm1, %ymm0");
+ asm("vcvtne2ps2bf16 %ymm6, %ymm7, %ymm6");
+}
+
+void
+convert_zmm_from_float_to_bfloat16 (void)
+{
+ asm("vcvtne2ps2bf16 %zmm0, %zmm1, %zmm0");
+ asm("vcvtne2ps2bf16 %zmm6, %zmm7, %zmm6");
+}
+
+int
+main (int argc, char **argv)
+{
+ /* Move initial values from array to registers and read from XMM regs. */
+ move_data_to_xmm_reg ();
+ convert_xmm_from_float_to_bfloat16 ();
+ asm ("nop"); /* first breakpoint here */
+
+ /* Move initial values from array to registers and read from YMM regs. */
+ move_data_to_ymm_reg ();
+ convert_ymm_from_float_to_bfloat16 ();
+ asm ("nop"); /* second breakpoint here */
+
+ /* Move initial values from array to registers and read from ZMM regs. */
+ move_data_to_zmm_reg ();
+ convert_zmm_from_float_to_bfloat16 ();
+ asm ("nop"); /* third breakpoint here */
+
+ return 0;
+}
diff --git a/gdb/testsuite/gdb.arch/x86-avx512bf16.exp b/gdb/testsuite/gdb.arch/x86-avx512bf16.exp
new file mode 100644
index 0000000..5f90d8a
--- /dev/null
+++ b/gdb/testsuite/gdb.arch/x86-avx512bf16.exp
@@ -0,0 +1,74 @@
+# Copyright 2020 Free Software Foundation, Inc.
+
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program. If not, see <http://www.gnu.org/licenses/>.
+
+# Please email any bugs, comments, and/or additions to this file to:
+# bug-gdb@gnu.org
+
+# Test bfloat16 support in AVX512 registers
+
+if { [skip_avx512bf16_tests] } {
+ unsupported "target does not support AVX512BF16"
+ return -1
+}
+
+standard_testfile
+
+if { [prepare_for_testing "failed to prepare" ${testfile} ${srcfile}] } {
+ return -1
+}
+
+if { ![runto_main] } {
+ unsupported "could not run to main"
+ return -1
+}
+
+# Test xmm
+set line1 [gdb_get_line_number "first breakpoint here"]
+gdb_breakpoint $line1
+gdb_continue_to_breakpoint "line1" ".*$srcfile:$line1.*"
+
+gdb_test "print \$xmm0.v8_bfloat16" \
+ "= \\{0, 0.125, 0.25, 0.375, 0.5, 0.625, 0.75, 0.875\\}"
+
+gdb_test "print \$xmm6.v8_bfloat16" \
+ "= \\{3, 3.125, 3.25, 3.375, 3.5, 3.625, 3.75, 3.875\\}"
+
+# Test ymm
+set line2 [gdb_get_line_number "second breakpoint here"]
+gdb_breakpoint $line2
+gdb_continue_to_breakpoint "line2" ".*$srcfile:$line2.*"
+
+gdb_test "print \$ymm0.v16_bfloat16\[1\]" "= 8.25"
+gdb_test "print \$ymm6.v16_bfloat16\[1\]" "= 20.25"
+
+# Test zmm
+set line3 [gdb_get_line_number "third breakpoint here"]
+gdb_breakpoint $line3
+gdb_continue_to_breakpoint "line3" ".*$srcfile:$line3.*"
+
+gdb_test "print \$zmm0.v32_bfloat16\[1\]" "= 20.5"
+gdb_test "print \$zmm6.v32_bfloat16\[1\]" "= 68.5"
+
+# Test setting of bfloat values
+gdb_test_no_output "set var \$xmm0.v8_bfloat16\[0\] = 32.25" \
+ "set %xmm0.v8_bfloat16\[0\]"
+gdb_test_no_output "set var \$ymm8.v16_bfloat16\[1\] = 33.5" \
+ "set %ymm8.v16_bfloat16\[1\]"
+gdb_test_no_output "set var \$zmm16.v32_bfloat16\[2\] = 22.75" \
+ "set %zmm16.v32_bfloat16\[2\]"
+
+gdb_test "p \$xmm0.v8_bfloat16\[0\]" "= 32.25"
+gdb_test "p \$ymm8.v16_bfloat16\[1\]" "= 33.5"
+gdb_test "p \$zmm16.v32_bfloat16\[2\]" "= 22.75"
diff --git a/gdb/testsuite/lib/gdb.exp b/gdb/testsuite/lib/gdb.exp
index 8ff2025..653f145 100644
--- a/gdb/testsuite/lib/gdb.exp
+++ b/gdb/testsuite/lib/gdb.exp
@@ -3061,6 +3061,57 @@ gdb_caching_proc skip_tsx_tests {
return $skip_tsx_tests
}
+# Run a test on the target to see if it supports avx512bf16. Return 0 if so,
+# 1 if it does not. Based on 'check_vmx_hw_available' from the GCC testsuite.
+
+gdb_caching_proc skip_avx512bf16_tests {
+ global srcdir subdir gdb_prompt inferior_exited_re
+
+ set me "skip_avx512bf16_tests"
+ if { ![istarget "i?86-*-*"] && ![istarget "x86_64-*-*"] } {
+ verbose "$me: target does not support avx512bf16, returning 1" 2
+ return 1
+ }
+
+ # Compile a test program.
+ set src {
+ int main() {
+ asm volatile ("vcvtne2ps2bf16 %xmm0, %xmm1, %xmm0");
+ return 0;
+ }
+ }
+ if {![gdb_simple_compile $me $src executable]} {
+ return 1
+ }
+
+ # No error message, compilation succeeded so now run it via gdb.
+
+ gdb_exit
+ gdb_start
+ gdb_reinitialize_dir $srcdir/$subdir
+ gdb_load "$obj"
+ gdb_run_cmd
+ gdb_expect {
+ -re ".*Illegal instruction.*${gdb_prompt} $" {
+ verbose -log "$me: avx512bf16 hardware not detected."
+ set skip_avx512bf16_tests 1
+ }
+ -re ".*$inferior_exited_re normally.*${gdb_prompt} $" {
+ verbose -log "$me: avx512bf16 hardware detected."
+ set skip_avx512bf16_tests 0
+ }
+ default {
+ warning "\n$me: default case taken."
+ set skip_avx512bf16_tests 1
+ }
+ }
+ gdb_exit
+ remote_file build delete $obj
+
+ verbose "$me: returning $skip_avx512bf16_tests" 2
+ return $skip_avx512bf16_tests
+}
+
# Run a test on the target to see if it supports btrace hardware. Return 0 if so,
# 1 if it does not. Based on 'check_vmx_hw_available' from the GCC testsuite.
diff --git a/gdbsupport/tdesc.cc b/gdbsupport/tdesc.cc
index 624588b..c2a3af7 100644
--- a/gdbsupport/tdesc.cc
+++ b/gdbsupport/tdesc.cc
@@ -54,7 +54,8 @@ static tdesc_type_builtin tdesc_predefined_types[] =
{ "ieee_single", TDESC_TYPE_IEEE_SINGLE },
{ "ieee_double", TDESC_TYPE_IEEE_DOUBLE },
{ "arm_fpa_ext", TDESC_TYPE_ARM_FPA_EXT },
- { "i387_ext", TDESC_TYPE_I387_EXT }
+ { "i387_ext", TDESC_TYPE_I387_EXT },
+ { "bfloat16", TDESC_TYPE_BFLOAT16 }
};
void tdesc_feature::accept (tdesc_element_visitor &v) const
diff --git a/gdbsupport/tdesc.h b/gdbsupport/tdesc.h
index fdc2a6a..14b5b5f 100644
--- a/gdbsupport/tdesc.h
+++ b/gdbsupport/tdesc.h
@@ -173,6 +173,7 @@ enum tdesc_type_kind
TDESC_TYPE_IEEE_DOUBLE,
TDESC_TYPE_ARM_FPA_EXT,
TDESC_TYPE_I387_EXT,
+ TDESC_TYPE_BFLOAT16,
/* Types defined by a target feature. */
TDESC_TYPE_VECTOR,
generated by cgit v1.1 at 2024-10-07 04:17:36 +0000