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-rw-r--r--gcc/config/i386/cet.c76
-rw-r--r--gcc/config/i386/gnu-property.c124
-rw-r--r--gcc/config/i386/i386.opt4
-rw-r--r--gcc/config/i386/linux-common.h4
-rw-r--r--gcc/config/i386/t-gnu-property (renamed from gcc/config/i386/t-cet)2
5 files changed, 131 insertions, 79 deletions
diff --git a/gcc/config/i386/cet.c b/gcc/config/i386/cet.c
deleted file mode 100644
index 5450ac3..0000000
--- a/gcc/config/i386/cet.c
+++ /dev/null
@@ -1,76 +0,0 @@
-/* Functions for CET/x86.
- Copyright (C) 2017-2020 Free Software Foundation, Inc.
-
-This file is part of GCC.
-
-GCC 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, or (at your option)
-any later version.
-
-GCC 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 GCC; see the file COPYING3. If not see
-<http://www.gnu.org/licenses/>. */
-
-#include "config.h"
-#include "system.h"
-#include "coretypes.h"
-#include "tm.h"
-#include "output.h"
-#include "linux-common.h"
-
-void
-file_end_indicate_exec_stack_and_cet (void)
-{
- file_end_indicate_exec_stack ();
-
- if (flag_cf_protection == CF_NONE)
- return;
-
- unsigned int feature_1 = 0;
-
- if (flag_cf_protection & CF_BRANCH)
- /* GNU_PROPERTY_X86_FEATURE_1_IBT. */
- feature_1 |= 0x1;
-
- if (flag_cf_protection & CF_RETURN)
- /* GNU_PROPERTY_X86_FEATURE_1_SHSTK. */
- feature_1 |= 0x2;
-
- if (feature_1)
- {
- int p2align = ptr_mode == SImode ? 2 : 3;
-
- /* Generate GNU_PROPERTY_X86_FEATURE_1_XXX. */
- switch_to_section (get_section (".note.gnu.property",
- SECTION_NOTYPE, NULL));
-
- ASM_OUTPUT_ALIGN (asm_out_file, p2align);
- /* name length. */
- fprintf (asm_out_file, ASM_LONG " 1f - 0f\n");
- /* data length. */
- fprintf (asm_out_file, ASM_LONG " 4f - 1f\n");
- /* note type: NT_GNU_PROPERTY_TYPE_0. */
- fprintf (asm_out_file, ASM_LONG " 5\n");
- fprintf (asm_out_file, "0:\n");
- /* vendor name: "GNU". */
- fprintf (asm_out_file, STRING_ASM_OP " \"GNU\"\n");
- fprintf (asm_out_file, "1:\n");
- ASM_OUTPUT_ALIGN (asm_out_file, p2align);
- /* pr_type: GNU_PROPERTY_X86_FEATURE_1_AND. */
- fprintf (asm_out_file, ASM_LONG " 0xc0000002\n");
- /* pr_datasz. */\
- fprintf (asm_out_file, ASM_LONG " 3f - 2f\n");
- fprintf (asm_out_file, "2:\n");
- /* GNU_PROPERTY_X86_FEATURE_1_XXX. */
- fprintf (asm_out_file, ASM_LONG " 0x%x\n", feature_1);
- fprintf (asm_out_file, "3:\n");
- ASM_OUTPUT_ALIGN (asm_out_file, p2align);
- fprintf (asm_out_file, "4:\n");
- }
-}
diff --git a/gcc/config/i386/gnu-property.c b/gcc/config/i386/gnu-property.c
new file mode 100644
index 0000000..1288325
--- /dev/null
+++ b/gcc/config/i386/gnu-property.c
@@ -0,0 +1,124 @@
+/* Functions for x86 GNU property.
+ Copyright (C) 2017-2020 Free Software Foundation, Inc.
+
+This file is part of GCC.
+
+GCC 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, or (at your option)
+any later version.
+
+GCC 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 GCC; see the file COPYING3. If not see
+<http://www.gnu.org/licenses/>. */
+
+#include "config.h"
+#include "system.h"
+#include "coretypes.h"
+#include "tm.h"
+#include "output.h"
+#include "linux-common.h"
+
+static void
+emit_gnu_property (unsigned int type, unsigned int data)
+{
+ int p2align = ptr_mode == SImode ? 2 : 3;
+
+ switch_to_section (get_section (".note.gnu.property",
+ SECTION_NOTYPE, NULL));
+
+ ASM_OUTPUT_ALIGN (asm_out_file, p2align);
+ /* name length. */
+ fprintf (asm_out_file, ASM_LONG "1f - 0f\n");
+ /* data length. */
+ fprintf (asm_out_file, ASM_LONG "4f - 1f\n");
+ /* note type: NT_GNU_PROPERTY_TYPE_0. */
+ fprintf (asm_out_file, ASM_LONG "5\n");
+ fprintf (asm_out_file, "0:\n");
+ /* vendor name: "GNU". */
+ fprintf (asm_out_file, STRING_ASM_OP "\"GNU\"\n");
+ fprintf (asm_out_file, "1:\n");
+ ASM_OUTPUT_ALIGN (asm_out_file, p2align);
+ /* pr_type. */
+ fprintf (asm_out_file, ASM_LONG "0x%x\n", type);
+ /* pr_datasz. */
+ fprintf (asm_out_file, ASM_LONG "3f - 2f\n");
+ fprintf (asm_out_file, "2:\n");
+ fprintf (asm_out_file, ASM_LONG "0x%x\n", data);
+ fprintf (asm_out_file, "3:\n");
+ ASM_OUTPUT_ALIGN (asm_out_file, p2align);
+ fprintf (asm_out_file, "4:\n");
+}
+
+void
+file_end_indicate_exec_stack_and_gnu_property (void)
+{
+ file_end_indicate_exec_stack ();
+
+ if (flag_cf_protection == CF_NONE && !ix86_needed)
+ return;
+
+ unsigned int feature_1 = 0;
+
+ if (flag_cf_protection & CF_BRANCH)
+ /* GNU_PROPERTY_X86_FEATURE_1_IBT. */
+ feature_1 |= 0x1;
+
+ if (flag_cf_protection & CF_RETURN)
+ /* GNU_PROPERTY_X86_FEATURE_1_SHSTK. */
+ feature_1 |= 0x2;
+
+ /* Generate GNU_PROPERTY_X86_FEATURE_1_AND. */
+ if (feature_1)
+ emit_gnu_property (0xc0000002, feature_1);
+
+ unsigned int isa_1 = 0;
+ if (ix86_needed)
+ {
+ /* GNU_PROPERTY_X86_ISA_1_BASELINE. */
+ if (TARGET_64BIT
+ || TARGET_FXSR
+ || TARGET_80387
+ || TARGET_MMX
+ || TARGET_SSE
+ || TARGET_SSE2)
+ isa_1 |= 1 << 0;
+
+ /* GNU_PROPERTY_X86_ISA_1_V2. */
+ if (TARGET_CMPXCHG16B
+ || (TARGET_64BIT && TARGET_SAHF)
+ || TARGET_POPCNT
+ || TARGET_SSE3
+ || TARGET_SSSE3
+ || TARGET_SSE4_1
+ || TARGET_SSE4_2)
+ isa_1 |= 1 << 1;
+
+ /* GNU_PROPERTY_X86_ISA_1_V3. */
+ if (TARGET_AVX
+ || TARGET_AVX2
+ || TARGET_F16C
+ || TARGET_FMA
+ || TARGET_LZCNT
+ || TARGET_MOVBE
+ || TARGET_XSAVE)
+ isa_1 |= 1 << 2;
+
+ /* GNU_PROPERTY_X86_ISA_1_V4. */
+ if (TARGET_AVX512F
+ || TARGET_AVX512BW
+ || TARGET_AVX512CD
+ || TARGET_AVX512DQ
+ || TARGET_AVX512VL)
+ isa_1 |= 1 << 3;
+ }
+
+ /* Generate GNU_PROPERTY_X86_ISA_1_NEEDED. */
+ if (isa_1)
+ emit_gnu_property (0xc0008002, isa_1);
+}
diff --git a/gcc/config/i386/i386.opt b/gcc/config/i386/i386.opt
index fac76e4..d7e4f44 100644
--- a/gcc/config/i386/i386.opt
+++ b/gcc/config/i386/i386.opt
@@ -1148,3 +1148,7 @@ mavxvnni
Target Report Mask(ISA2_AVXVNNI) Var(ix86_isa_flags2) Save
Support MMX, SSE, SSE2, SSE3, SSSE3, SSE4.1, SSE4.2, AVX, AVX2, and
AVXVNNI built-in functions and code generation.
+
+mneeded
+Target Report Var(ix86_needed) Save
+Emit GNU_PROPERTY_X86_ISA_1_NEEDED GNU property
diff --git a/gcc/config/i386/linux-common.h b/gcc/config/i386/linux-common.h
index 982390d..da0fabb 100644
--- a/gcc/config/i386/linux-common.h
+++ b/gcc/config/i386/linux-common.h
@@ -65,7 +65,7 @@ along with GCC; see the file COPYING3. If not see
#define MPX_LD_AS_NEEDED_GUARD_POP ""
#endif
-extern void file_end_indicate_exec_stack_and_cet (void);
+extern void file_end_indicate_exec_stack_and_gnu_property (void);
#undef TARGET_ASM_FILE_END
-#define TARGET_ASM_FILE_END file_end_indicate_exec_stack_and_cet
+#define TARGET_ASM_FILE_END file_end_indicate_exec_stack_and_gnu_property
diff --git a/gcc/config/i386/t-cet b/gcc/config/i386/t-gnu-property
index d685d31..fd8bbce 100644
--- a/gcc/config/i386/t-cet
+++ b/gcc/config/i386/t-gnu-property
@@ -16,6 +16,6 @@
# along with GCC; see the file COPYING3. If not see
# <http://www.gnu.org/licenses/>.
-cet.o: $(srcdir)/config/i386/cet.c
+gnu-property.o: $(srcdir)/config/i386/gnu-property.c
$(COMPILE) $<
$(POSTCOMPILE)
generated by cgit v1.1 at 2025-03-04 11:26:49 +0000