diff mbox

[RFC,2/5] xtensa: make configuration dynamic

Message ID 1495487553-19078-3-git-send-email-jcmvbkbc@gmail.com
State New, archived
Headers

Commit Message

Max Filippov May 22, 2017, 9:12 p.m. UTC 
  Now that XCHAL_* macros don't have to be preprocessor constants add
include/xtensa-dynconfig.h that defines them as fields of a structure
returned from the xtensa_get_config function.
Define that structure and fill it with default parameter values
specified in the include/xtensa-config.h.
Define reusable function xtensa_load_config that tries to load
configuration and return an address of an exported object from it.
Define the function xtensa_get_config that uses xtensa_load_config to
get structure xtensa_config, either dynamically configured or the
default.

2017-05-22  Max Filippov  <jcmvbkbc@gmail.com>
bfd/
	* Makefile.am (BFD32_BACKENDS, BFD32_BACKENDS_CFILES): Append
	xtensa-config.c.
	* Makefile.in: Regenerate.
	* configure: Regenerate.
	* configure.ac (xtensa_elf32_be_vec, xtensa_elf32_le_vec): Add
	xtensa-config.lo to the tb.
	* elf32-xtensa.c (xtensa-config.h): Replace #include with
	xtensa-dynconfig.h.
	* xtensa-config.c: New file.

gas/
	* config/tc-xtensa.c (xtensa-config.h): Replace #include with
	xtensa-dynconfig.h.
	* config/tc-xtensa.h: Likewise.
	* config/xtensa-relax.c: Likewise.

include/
	* xtensa-dynconfig.h: New file.

ld/
	* Makefile.am (eelf32xtensa.c): Add $(INCDIR)/xtensa-dynconfig.h
	to the list of dependencies.
	* Makefile.in: Regenerate.
	* emultempl/xtensaelf.em (xtensa-config.h): Replace #include
	with xtensa-dynconfig.h.
---
 bfd/Makefile.am            |   2 +
 bfd/Makefile.in            |   3 +
 bfd/configure              |   4 +-
 bfd/configure.ac           |   4 +-
 bfd/elf32-xtensa.c         |   2 +-
 bfd/xtensa-config.c        |  84 ++++++++++
 gas/config/tc-xtensa.c     |   2 +-
 gas/config/tc-xtensa.h     |   2 +-
 gas/config/xtensa-relax.c  |   2 +-
 include/xtensa-dynconfig.h | 373 +++++++++++++++++++++++++++++++++++++++++++++
 ld/Makefile.am             |   1 +
 ld/Makefile.in             |   1 +
 ld/emultempl/xtensaelf.em  |   2 +-
 13 files changed, 473 insertions(+), 9 deletions(-)
 create mode 100644 bfd/xtensa-config.c
 create mode 100644 include/xtensa-dynconfig.h

Comments

augustine.sterling@gmail.com May 26, 2017, 6:10 p.m. UTC | #1 
On Mon, May 22, 2017 at 2:12 PM, Max Filippov <jcmvbkbc@gmail.com> wrote:
> Now that XCHAL_* macros don't have to be preprocessor constants add
> include/xtensa-dynconfig.h that defines them as fields of a structure
> returned from the xtensa_get_config function.
> Define that structure and fill it with default parameter values
> specified in the include/xtensa-config.h.
> Define reusable function xtensa_load_config that tries to load
> configuration and return an address of an exported object from it.
> Define the function xtensa_get_config that uses xtensa_load_config to
> get structure xtensa_config, either dynamically configured or the
> default.
>
> 2017-05-22  Max Filippov  <jcmvbkbc@gmail.com>
> bfd/
>         * Makefile.am (BFD32_BACKENDS, BFD32_BACKENDS_CFILES): Append
>         xtensa-config.c.
>         * Makefile.in: Regenerate.
>         * configure: Regenerate.
>         * configure.ac (xtensa_elf32_be_vec, xtensa_elf32_le_vec): Add
>         xtensa-config.lo to the tb.
>         * elf32-xtensa.c (xtensa-config.h): Replace #include with
>         xtensa-dynconfig.h.
>         * xtensa-config.c: New file.
>
> gas/
>         * config/tc-xtensa.c (xtensa-config.h): Replace #include with
>         xtensa-dynconfig.h.
>         * config/tc-xtensa.h: Likewise.
>         * config/xtensa-relax.c: Likewise.
>
> include/
>         * xtensa-dynconfig.h: New file.
>
> ld/
>         * Makefile.am (eelf32xtensa.c): Add $(INCDIR)/xtensa-dynconfig.h
>         to the list of dependencies.
>         * Makefile.in: Regenerate.
>         * emultempl/xtensaelf.em (xtensa-config.h): Replace #include
>         with xtensa-dynconfig.h.

This is ok.
augustine.sterling@gmail.com May 26, 2017, 6:15 p.m. UTC | #2 
On Fri, May 26, 2017 at 11:10 AM, augustine.sterling@gmail.com
<augustine.sterling@gmail.com> wrote:
> On Mon, May 22, 2017 at 2:12 PM, Max Filippov <jcmvbkbc@gmail.com> wrote:
>> Now that XCHAL_* macros don't have to be preprocessor constants add
>> include/xtensa-dynconfig.h that defines them as fields of a structure
>> returned from the xtensa_get_config function.
>> Define that structure and fill it with default parameter values
>> specified in the include/xtensa-config.h.
>> Define reusable function xtensa_load_config that tries to load
>> configuration and return an address of an exported object from it.
>> Define the function xtensa_get_config that uses xtensa_load_config to
>> get structure xtensa_config, either dynamically configured or the
>> default.
>>
>> 2017-05-22  Max Filippov  <jcmvbkbc@gmail.com>
>> bfd/
>>         * Makefile.am (BFD32_BACKENDS, BFD32_BACKENDS_CFILES): Append
>>         xtensa-config.c.
>>         * Makefile.in: Regenerate.
>>         * configure: Regenerate.
>>         * configure.ac (xtensa_elf32_be_vec, xtensa_elf32_le_vec): Add
>>         xtensa-config.lo to the tb.
>>         * elf32-xtensa.c (xtensa-config.h): Replace #include with
>>         xtensa-dynconfig.h.
>>         * xtensa-config.c: New file.
>>
>> gas/
>>         * config/tc-xtensa.c (xtensa-config.h): Replace #include with
>>         xtensa-dynconfig.h.
>>         * config/tc-xtensa.h: Likewise.
>>         * config/xtensa-relax.c: Likewise.
>>
>> include/
>>         * xtensa-dynconfig.h: New file.
>>
>> ld/
>>         * Makefile.am (eelf32xtensa.c): Add $(INCDIR)/xtensa-dynconfig.h
>>         to the list of dependencies.
>>         * Makefile.in: Regenerate.
>>         * emultempl/xtensaelf.em (xtensa-config.h): Replace #include
>>         with xtensa-dynconfig.h.
>
> This is ok.

Actually, check that. I missed that this does both the refactoring
necessary to add a plugin mechanism and actually adds the plugin
mechanism.

So: This introduces a plugin mechanism to gdb and binutils. That needs
a higher-level discussion regarding licensing and plugin mechanisms
generally, but from the general maintainers of both binutils and gdb.

Would one of the general maintainers review this please?
Nick Clifton June 6, 2017, 12:53 p.m. UTC | #3 
Hi Augustine, Hi Max,

> Actually, check that. I missed that this does both the refactoring
> necessary to add a plugin mechanism and actually adds the plugin
> mechanism.
> 
> So: This introduces a plugin mechanism to gdb and binutils. That needs
> a higher-level discussion regarding licensing and plugin mechanisms
> generally, but from the general maintainers of both binutils and gdb.
> 
> Would one of the general maintainers review this please?

Well the binutils already has a plugin support, so this patch is just
adding the ability for a different type of plugin to be used.  I am OK
with that, providing that the plugin itself is also licensed under the
GPL v3.

Cheers
  Nick
Max Filippov June 7, 2017, 7:13 p.m. UTC | #4 
Hi Nick,

On Tue, Jun 6, 2017 at 5:53 AM, Nick Clifton <nickc@redhat.com> wrote:
> Well the binutils already has a plugin support, so this patch is just
> adding the ability for a different type of plugin to be used.  I am OK
> with that, providing that the plugin itself is also licensed under the
> GPL v3.

Yes, that's the intention. I've also got a suggestion on the gcc list to add
a mechanism that makes the plugin license requirement more apparent,
I'll do it in the next iteration of this series.
diff mbox

Patch

diff --git a/bfd/Makefile.am b/bfd/Makefile.am
index 55e6aaf..f6daff4 100644
--- a/bfd/Makefile.am
+++ b/bfd/Makefile.am
@@ -455,6 +455,7 @@  BFD32_BACKENDS = \
 	vms-misc.lo \
 	xcofflink.lo \
 	xsym.lo \
+	xtensa-config.lo \
 	xtensa-isa.lo \
 	xtensa-modules.lo
 
@@ -646,6 +647,7 @@  BFD32_BACKENDS_CFILES = \
 	vms-misc.c \
 	xcofflink.c \
 	xsym.c \
+	xtensa-config.c \
 	xtensa-isa.c \
 	xtensa-modules.c
 
diff --git a/bfd/Makefile.in b/bfd/Makefile.in
index 43d8b62..4f6d593 100644
--- a/bfd/Makefile.in
+++ b/bfd/Makefile.in
@@ -789,6 +789,7 @@  BFD32_BACKENDS = \
 	vms-misc.lo \
 	xcofflink.lo \
 	xsym.lo \
+	xtensa-config.lo \
 	xtensa-isa.lo \
 	xtensa-modules.lo
 
@@ -980,6 +981,7 @@  BFD32_BACKENDS_CFILES = \
 	vms-misc.c \
 	xcofflink.c \
 	xsym.c \
+	xtensa-config.c \
 	xtensa-isa.c \
 	xtensa-modules.c
 
@@ -1661,6 +1663,7 @@  distclean-compile:
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/vms-misc.Plo@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/xcofflink.Plo@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/xsym.Plo@am__quote@
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/xtensa-config.Plo@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/xtensa-isa.Plo@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/xtensa-modules.Plo@am__quote@
 
diff --git a/bfd/configure b/bfd/configure
index 9769387..e8fd5a9 100755
--- a/bfd/configure
+++ b/bfd/configure
@@ -14584,8 +14584,8 @@  do
     xc16x_elf32_vec)		 tb="$tb elf32-xc16x.lo elf32.lo $elf" ;;
     xgate_elf32_vec)		 tb="$tb elf32-xgate.lo elf32.lo $elf" ;;
     xstormy16_elf32_vec)	 tb="$tb elf32-xstormy16.lo elf32.lo $elf" ;;
-    xtensa_elf32_be_vec)	 tb="$tb xtensa-isa.lo xtensa-modules.lo elf32-xtensa.lo elf32.lo $elf" ;;
-    xtensa_elf32_le_vec)	 tb="$tb xtensa-isa.lo xtensa-modules.lo elf32-xtensa.lo elf32.lo $elf" ;;
+    xtensa_elf32_be_vec)	 tb="$tb xtensa-config.lo xtensa-isa.lo xtensa-modules.lo elf32-xtensa.lo elf32.lo $elf" ;;
+    xtensa_elf32_le_vec)	 tb="$tb xtensa-config.lo xtensa-isa.lo xtensa-modules.lo elf32-xtensa.lo elf32.lo $elf" ;;
     z80_coff_vec)		 tb="$tb coff-z80.lo reloc16.lo $coffgen" ;;
     z8k_coff_vec)		 tb="$tb coff-z8k.lo reloc16.lo $coff" ;;
 
diff --git a/bfd/configure.ac b/bfd/configure.ac
index 9a183c1..ebf6a0e 100644
--- a/bfd/configure.ac
+++ b/bfd/configure.ac
@@ -715,8 +715,8 @@  do
     xc16x_elf32_vec)		 tb="$tb elf32-xc16x.lo elf32.lo $elf" ;;
     xgate_elf32_vec)		 tb="$tb elf32-xgate.lo elf32.lo $elf" ;;
     xstormy16_elf32_vec)	 tb="$tb elf32-xstormy16.lo elf32.lo $elf" ;;
-    xtensa_elf32_be_vec)	 tb="$tb xtensa-isa.lo xtensa-modules.lo elf32-xtensa.lo elf32.lo $elf" ;;
-    xtensa_elf32_le_vec)	 tb="$tb xtensa-isa.lo xtensa-modules.lo elf32-xtensa.lo elf32.lo $elf" ;;
+    xtensa_elf32_be_vec)	 tb="$tb xtensa-config.lo xtensa-isa.lo xtensa-modules.lo elf32-xtensa.lo elf32.lo $elf" ;;
+    xtensa_elf32_le_vec)	 tb="$tb xtensa-config.lo xtensa-isa.lo xtensa-modules.lo elf32-xtensa.lo elf32.lo $elf" ;;
     z80_coff_vec)		 tb="$tb coff-z80.lo reloc16.lo $coffgen" ;;
     z8k_coff_vec)		 tb="$tb coff-z8k.lo reloc16.lo $coff" ;;
 
diff --git a/bfd/elf32-xtensa.c b/bfd/elf32-xtensa.c
index 078918f..c67e340 100644
--- a/bfd/elf32-xtensa.c
+++ b/bfd/elf32-xtensa.c
@@ -30,7 +30,7 @@ 
 #include "elf/xtensa.h"
 #include "splay-tree.h"
 #include "xtensa-isa.h"
-#include "xtensa-config.h"
+#include "xtensa-dynconfig.h"
 
 #define XTENSA_NO_NOP_REMOVAL 0
 
diff --git a/bfd/xtensa-config.c b/bfd/xtensa-config.c
new file mode 100644
index 0000000..fdbcca4
--- /dev/null
+++ b/bfd/xtensa-config.c
@@ -0,0 +1,84 @@ 
+#include "sysdep.h"
+#include "bfd.h"
+
+#if defined (HAVE_DLFCN_H)
+#include <dlfcn.h>
+#endif
+#include <stdio.h>
+#include <stdlib.h>
+#define XTENSA_CONFIG_DEFINITION
+#include "xtensa-config.h"
+#include "xtensa-dynconfig.h"
+
+static struct xtensa_config xtensa_defconfig = XTENSA_CONFIG_INITIALIZER;
+
+void *xtensa_load_config (const char *name ATTRIBUTE_UNUSED, void *def)
+{
+  static int init;
+#if BFD_SUPPORTS_PLUGINS
+  static void *handle;
+  void *p;
+
+  if (!init)
+    {
+      char *path = getenv ("XTENSA_GNU_CONFIG");
+
+      init = 1;
+      if (!path)
+	return def;
+      handle = dlopen (path, RTLD_LAZY);
+      if (!handle)
+	{
+	  fprintf (stderr,
+		   "XTENSA_GNU_CONFIG is defined but could not be loaded: %s\n",
+		   dlerror ());
+	  abort ();
+	}
+    }
+  else if (!handle)
+    {
+      return def;
+    }
+
+  p = dlsym (handle, name);
+  if (!p)
+    {
+      fprintf (stderr,
+	       "XTENSA_GNU_CONFIG is loaded but symbol \"%s\" is not found: %s\n",
+	       name, dlerror ());
+      abort ();
+    }
+  return p;
+#else
+  if (!init)
+    {
+      char *path = getenv ("XTENSA_GNU_CONFIG");
+
+      init = 1;
+      if (path)
+	{
+	  fprintf (stderr,
+		   "XTENSA_GNU_CONFIG is defined but plugin support is disabled\n");
+	  abort ();
+	}
+    }
+  return def;
+#endif
+}
+
+struct xtensa_config *xtensa_get_config (void)
+{
+  static struct xtensa_config *config;
+
+  if (!config)
+    config = xtensa_load_config ("xtensa_config", &xtensa_defconfig);
+
+  if (config->config_size < sizeof(struct xtensa_config))
+    {
+      fprintf (stderr,
+	       "old or incompatible configuration is loaded: config_size = %ld, expected: %ld\n",
+	       config->config_size, sizeof (struct xtensa_config));
+      abort ();
+    }
+  return config;
+}
diff --git a/gas/config/tc-xtensa.c b/gas/config/tc-xtensa.c
index ed7ba0a..0a491c3 100644
--- a/gas/config/tc-xtensa.c
+++ b/gas/config/tc-xtensa.c
@@ -28,7 +28,7 @@ 
 #include "dwarf2dbg.h"
 #include "xtensa-istack.h"
 #include "struc-symbol.h"
-#include "xtensa-config.h"
+#include "xtensa-dynconfig.h"
 #include "elf/xtensa.h"
 
 /* Provide default values for new configuration settings.  */
diff --git a/gas/config/tc-xtensa.h b/gas/config/tc-xtensa.h
index 69a5c8a..7dd225d 100644
--- a/gas/config/tc-xtensa.h
+++ b/gas/config/tc-xtensa.h
@@ -28,7 +28,7 @@  struct fix;
 #endif
 
 #include "xtensa-isa.h"
-#include "xtensa-config.h"
+#include "xtensa-dynconfig.h"
 
 #define TARGET_BYTES_BIG_ENDIAN 0
 
diff --git a/gas/config/xtensa-relax.c b/gas/config/xtensa-relax.c
index f54cf79..2914857 100644
--- a/gas/config/xtensa-relax.c
+++ b/gas/config/xtensa-relax.c
@@ -99,7 +99,7 @@ 
 #include "xtensa-isa.h"
 #include "xtensa-relax.h"
 #include <stddef.h>
-#include "xtensa-config.h"
+#include "xtensa-dynconfig.h"
 
 #ifndef XCHAL_HAVE_WIDE_BRANCHES
 #define XCHAL_HAVE_WIDE_BRANCHES 0
diff --git a/include/xtensa-dynconfig.h b/include/xtensa-dynconfig.h
new file mode 100644
index 0000000..12181be
--- /dev/null
+++ b/include/xtensa-dynconfig.h
@@ -0,0 +1,373 @@ 
+/* Xtensa configuration settings.
+   Copyright (C) 2017 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 2, 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, write to the Free Software
+   Foundation, 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA.  */
+
+#ifndef XTENSA_DYNAMIC_CONFIG_H
+#define XTENSA_DYNAMIC_CONFIG_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+struct xtensa_config {
+    unsigned long config_size;
+    unsigned int xchal_have_be;
+    unsigned int xchal_have_density;
+    unsigned int xchal_have_const16;
+    unsigned int xchal_have_abs;
+    unsigned int xchal_have_addx;
+    unsigned int xchal_have_l32r;
+    unsigned int xshal_use_absolute_literals;
+    unsigned int xshal_have_text_section_literals;
+    unsigned int xchal_have_mac16;
+    unsigned int xchal_have_mul16;
+    unsigned int xchal_have_mul32;
+    unsigned int xchal_have_mul32_high;
+    unsigned int xchal_have_div32;
+    unsigned int xchal_have_nsa;
+    unsigned int xchal_have_minmax;
+    unsigned int xchal_have_sext;
+    unsigned int xchal_have_loops;
+    unsigned int xchal_have_threadptr;
+    unsigned int xchal_have_release_sync;
+    unsigned int xchal_have_s32c1i;
+    unsigned int xchal_have_booleans;
+    unsigned int xchal_have_fp;
+    unsigned int xchal_have_fp_div;
+    unsigned int xchal_have_fp_recip;
+    unsigned int xchal_have_fp_sqrt;
+    unsigned int xchal_have_fp_rsqrt;
+    unsigned int xchal_have_fp_postinc;
+    unsigned int xchal_have_dfp;
+    unsigned int xchal_have_dfp_div;
+    unsigned int xchal_have_dfp_recip;
+    unsigned int xchal_have_dfp_sqrt;
+    unsigned int xchal_have_dfp_rsqrt;
+    unsigned int xchal_have_windowed;
+    unsigned int xchal_num_aregs;
+    unsigned int xchal_have_wide_branches;
+    unsigned int xchal_have_predicted_branches;
+    unsigned int xchal_icache_size;
+    unsigned int xchal_dcache_size;
+    unsigned int xchal_icache_linesize;
+    unsigned int xchal_dcache_linesize;
+    unsigned int xchal_icache_linewidth;
+    unsigned int xchal_dcache_linewidth;
+    unsigned int xchal_dcache_is_writeback;
+    unsigned int xchal_have_mmu;
+    unsigned int xchal_mmu_min_pte_page_size;
+    unsigned int xchal_have_debug;
+    unsigned int xchal_num_ibreak;
+    unsigned int xchal_num_dbreak;
+    unsigned int xchal_debuglevel;
+    unsigned int xchal_max_instruction_size;
+    unsigned int xchal_inst_fetch_width;
+    unsigned int xshal_abi;
+    unsigned int xthal_abi_windowed;
+    unsigned int xthal_abi_call0;
+};
+
+typedef struct xtensa_isa_internal_struct xtensa_isa_internal;
+
+extern void *xtensa_load_config (const char *name, void *def);
+extern struct xtensa_config *xtensa_get_config (void);
+
+#ifdef XTENSA_CONFIG_DEFINITION
+
+#ifndef XCHAL_HAVE_MUL32_HIGH
+#define XCHAL_HAVE_MUL32_HIGH 0
+#endif
+
+#ifndef XCHAL_HAVE_RELEASE_SYNC
+#define XCHAL_HAVE_RELEASE_SYNC 0
+#endif
+
+#ifndef XCHAL_HAVE_S32C1I
+#define XCHAL_HAVE_S32C1I 0
+#endif
+
+#ifndef XCHAL_HAVE_THREADPTR
+#define XCHAL_HAVE_THREADPTR 0
+#endif
+
+#ifndef XCHAL_HAVE_FP_POSTINC
+#define XCHAL_HAVE_FP_POSTINC 0
+#endif
+
+#ifndef XCHAL_HAVE_DFP
+#define XCHAL_HAVE_DFP 0
+#endif
+
+#ifndef XCHAL_HAVE_DFP_DIV
+#define XCHAL_HAVE_DFP_DIV 0
+#endif
+
+#ifndef XCHAL_HAVE_DFP_RECIP
+#define XCHAL_HAVE_DFP_RECIP 0
+#endif
+
+#ifndef XCHAL_HAVE_DFP_SQRT
+#define XCHAL_HAVE_DFP_SQRT 0
+#endif
+
+#ifndef XCHAL_HAVE_DFP_RSQRT
+#define XCHAL_HAVE_DFP_RSQRT 0
+#endif
+
+#ifndef XSHAL_HAVE_TEXT_SECTION_LITERALS
+#define XSHAL_HAVE_TEXT_SECTION_LITERALS 0
+#endif
+
+#ifndef XCHAL_MMU_MIN_PTE_PAGE_SIZE
+#define XCHAL_MMU_MIN_PTE_PAGE_SIZE 1
+#endif
+
+#define XTENSA_CONFIG_ENTRY(a) a
+
+#define XTENSA_CONFIG_ENTRY_LIST \
+    XTENSA_CONFIG_ENTRY(XCHAL_HAVE_BE), \
+    XTENSA_CONFIG_ENTRY(XCHAL_HAVE_DENSITY), \
+    XTENSA_CONFIG_ENTRY(XCHAL_HAVE_CONST16), \
+    XTENSA_CONFIG_ENTRY(XCHAL_HAVE_ABS), \
+    XTENSA_CONFIG_ENTRY(XCHAL_HAVE_ADDX), \
+    XTENSA_CONFIG_ENTRY(XCHAL_HAVE_L32R), \
+    XTENSA_CONFIG_ENTRY(XSHAL_USE_ABSOLUTE_LITERALS), \
+    XTENSA_CONFIG_ENTRY(XSHAL_HAVE_TEXT_SECTION_LITERALS), \
+    XTENSA_CONFIG_ENTRY(XCHAL_HAVE_MAC16), \
+    XTENSA_CONFIG_ENTRY(XCHAL_HAVE_MUL16), \
+    XTENSA_CONFIG_ENTRY(XCHAL_HAVE_MUL32), \
+    XTENSA_CONFIG_ENTRY(XCHAL_HAVE_MUL32_HIGH), \
+    XTENSA_CONFIG_ENTRY(XCHAL_HAVE_DIV32), \
+    XTENSA_CONFIG_ENTRY(XCHAL_HAVE_NSA), \
+    XTENSA_CONFIG_ENTRY(XCHAL_HAVE_MINMAX), \
+    XTENSA_CONFIG_ENTRY(XCHAL_HAVE_SEXT), \
+    XTENSA_CONFIG_ENTRY(XCHAL_HAVE_LOOPS), \
+    XTENSA_CONFIG_ENTRY(XCHAL_HAVE_THREADPTR), \
+    XTENSA_CONFIG_ENTRY(XCHAL_HAVE_RELEASE_SYNC), \
+    XTENSA_CONFIG_ENTRY(XCHAL_HAVE_S32C1I), \
+    XTENSA_CONFIG_ENTRY(XCHAL_HAVE_BOOLEANS), \
+    XTENSA_CONFIG_ENTRY(XCHAL_HAVE_FP), \
+    XTENSA_CONFIG_ENTRY(XCHAL_HAVE_FP_DIV), \
+    XTENSA_CONFIG_ENTRY(XCHAL_HAVE_FP_RECIP), \
+    XTENSA_CONFIG_ENTRY(XCHAL_HAVE_FP_SQRT), \
+    XTENSA_CONFIG_ENTRY(XCHAL_HAVE_FP_RSQRT), \
+    XTENSA_CONFIG_ENTRY(XCHAL_HAVE_FP_POSTINC), \
+    XTENSA_CONFIG_ENTRY(XCHAL_HAVE_DFP), \
+    XTENSA_CONFIG_ENTRY(XCHAL_HAVE_DFP_DIV), \
+    XTENSA_CONFIG_ENTRY(XCHAL_HAVE_DFP_RECIP), \
+    XTENSA_CONFIG_ENTRY(XCHAL_HAVE_DFP_SQRT), \
+    XTENSA_CONFIG_ENTRY(XCHAL_HAVE_DFP_RSQRT), \
+    XTENSA_CONFIG_ENTRY(XCHAL_HAVE_WINDOWED), \
+    XTENSA_CONFIG_ENTRY(XCHAL_NUM_AREGS), \
+    XTENSA_CONFIG_ENTRY(XCHAL_HAVE_WIDE_BRANCHES), \
+    XTENSA_CONFIG_ENTRY(XCHAL_HAVE_PREDICTED_BRANCHES), \
+    XTENSA_CONFIG_ENTRY(XCHAL_ICACHE_SIZE), \
+    XTENSA_CONFIG_ENTRY(XCHAL_DCACHE_SIZE), \
+    XTENSA_CONFIG_ENTRY(XCHAL_ICACHE_LINESIZE), \
+    XTENSA_CONFIG_ENTRY(XCHAL_DCACHE_LINESIZE), \
+    XTENSA_CONFIG_ENTRY(XCHAL_ICACHE_LINEWIDTH), \
+    XTENSA_CONFIG_ENTRY(XCHAL_DCACHE_LINEWIDTH), \
+    XTENSA_CONFIG_ENTRY(XCHAL_DCACHE_IS_WRITEBACK), \
+    XTENSA_CONFIG_ENTRY(XCHAL_HAVE_MMU), \
+    XTENSA_CONFIG_ENTRY(XCHAL_MMU_MIN_PTE_PAGE_SIZE), \
+    XTENSA_CONFIG_ENTRY(XCHAL_HAVE_DEBUG), \
+    XTENSA_CONFIG_ENTRY(XCHAL_NUM_IBREAK), \
+    XTENSA_CONFIG_ENTRY(XCHAL_NUM_DBREAK), \
+    XTENSA_CONFIG_ENTRY(XCHAL_DEBUGLEVEL), \
+    XTENSA_CONFIG_ENTRY(XCHAL_MAX_INSTRUCTION_SIZE), \
+    XTENSA_CONFIG_ENTRY(XCHAL_INST_FETCH_WIDTH), \
+    XTENSA_CONFIG_ENTRY(XSHAL_ABI), \
+    XTENSA_CONFIG_ENTRY(XTHAL_ABI_WINDOWED), \
+    XTENSA_CONFIG_ENTRY(XTHAL_ABI_CALL0)
+
+#define XTENSA_CONFIG_INITIALIZER { \
+    sizeof (struct xtensa_config), \
+    XTENSA_CONFIG_ENTRY_LIST, \
+}
+
+#else /* XTENSA_CONFIG_DEFINITION */
+
+#undef XCHAL_HAVE_BE
+#define XCHAL_HAVE_BE			(xtensa_get_config ()->xchal_have_be)
+
+#undef XCHAL_HAVE_DENSITY
+#define XCHAL_HAVE_DENSITY		(xtensa_get_config ()->xchal_have_density)
+
+#undef XCHAL_HAVE_CONST16
+#define XCHAL_HAVE_CONST16		(xtensa_get_config ()->xchal_have_const16)
+
+#undef XCHAL_HAVE_ABS
+#define XCHAL_HAVE_ABS			(xtensa_get_config ()->xchal_have_abs)
+
+#undef XCHAL_HAVE_ADDX
+#define XCHAL_HAVE_ADDX			(xtensa_get_config ()->xchal_have_addx)
+
+#undef XCHAL_HAVE_L32R
+#define XCHAL_HAVE_L32R			(xtensa_get_config ()->xchal_have_l32r)
+
+#undef XSHAL_USE_ABSOLUTE_LITERALS
+#define XSHAL_USE_ABSOLUTE_LITERALS	(xtensa_get_config ()->xshal_use_absolute_literals)
+
+#undef XSHAL_HAVE_TEXT_SECTION_LITERALS
+#define XSHAL_HAVE_TEXT_SECTION_LITERALS (xtensa_get_config ()->xshal_have_text_section_literals)
+
+#undef XCHAL_HAVE_MAC16
+#define XCHAL_HAVE_MAC16		(xtensa_get_config ()->xchal_have_mac16)
+
+#undef XCHAL_HAVE_MUL16
+#define XCHAL_HAVE_MUL16		(xtensa_get_config ()->xchal_have_mul16)
+
+#undef XCHAL_HAVE_MUL32
+#define XCHAL_HAVE_MUL32		(xtensa_get_config ()->xchal_have_mul32)
+
+#undef XCHAL_HAVE_MUL32_HIGH
+#define XCHAL_HAVE_MUL32_HIGH		(xtensa_get_config ()->xchal_have_mul32_high)
+
+#undef XCHAL_HAVE_DIV32
+#define XCHAL_HAVE_DIV32		(xtensa_get_config ()->xchal_have_div32)
+
+#undef XCHAL_HAVE_NSA
+#define XCHAL_HAVE_NSA			(xtensa_get_config ()->xchal_have_nsa)
+
+#undef XCHAL_HAVE_MINMAX
+#define XCHAL_HAVE_MINMAX		(xtensa_get_config ()->xchal_have_minmax)
+
+#undef XCHAL_HAVE_SEXT
+#define XCHAL_HAVE_SEXT			(xtensa_get_config ()->xchal_have_sext)
+
+#undef XCHAL_HAVE_LOOPS
+#define XCHAL_HAVE_LOOPS		(xtensa_get_config ()->xchal_have_loops)
+
+#undef XCHAL_HAVE_THREADPTR
+#define XCHAL_HAVE_THREADPTR		(xtensa_get_config ()->xchal_have_threadptr)
+
+#undef XCHAL_HAVE_RELEASE_SYNC
+#define XCHAL_HAVE_RELEASE_SYNC		(xtensa_get_config ()->xchal_have_release_sync)
+
+#undef XCHAL_HAVE_S32C1I
+#define XCHAL_HAVE_S32C1I		(xtensa_get_config ()->xchal_have_s32c1i)
+
+#undef XCHAL_HAVE_BOOLEANS
+#define XCHAL_HAVE_BOOLEANS		(xtensa_get_config ()->xchal_have_booleans)
+
+#undef XCHAL_HAVE_FP
+#define XCHAL_HAVE_FP			(xtensa_get_config ()->xchal_have_fp)
+
+#undef XCHAL_HAVE_FP_DIV
+#define XCHAL_HAVE_FP_DIV		(xtensa_get_config ()->xchal_have_fp_div)
+
+#undef XCHAL_HAVE_FP_RECIP
+#define XCHAL_HAVE_FP_RECIP		(xtensa_get_config ()->xchal_have_fp_recip)
+
+#undef XCHAL_HAVE_FP_SQRT
+#define XCHAL_HAVE_FP_SQRT		(xtensa_get_config ()->xchal_have_fp_sqrt)
+
+#undef XCHAL_HAVE_FP_RSQRT
+#define XCHAL_HAVE_FP_RSQRT		(xtensa_get_config ()->xchal_have_fp_rsqrt)
+
+#undef XCHAL_HAVE_FP_POSTINC
+#define XCHAL_HAVE_FP_POSTINC		(xtensa_get_config ()->xchal_have_fp_postinc)
+
+#undef XCHAL_HAVE_DFP
+#define XCHAL_HAVE_DFP			(xtensa_get_config ()->xchal_have_dfp)
+
+#undef XCHAL_HAVE_DFP_DIV
+#define XCHAL_HAVE_DFP_DIV		(xtensa_get_config ()->xchal_have_dfp_div)
+
+#undef XCHAL_HAVE_DFP_RECIP
+#define XCHAL_HAVE_DFP_RECIP		(xtensa_get_config ()->xchal_have_dfp_recip)
+
+#undef XCHAL_HAVE_DFP_SQRT
+#define XCHAL_HAVE_DFP_SQRT		(xtensa_get_config ()->xchal_have_dfp_sqrt)
+
+#undef XCHAL_HAVE_DFP_RSQRT
+#define XCHAL_HAVE_DFP_RSQRT		(xtensa_get_config ()->xchal_have_dfp_rsqrt)
+
+#undef XCHAL_HAVE_WINDOWED
+#define XCHAL_HAVE_WINDOWED		(xtensa_get_config ()->xchal_have_windowed)
+
+#undef XCHAL_NUM_AREGS
+#define XCHAL_NUM_AREGS			(xtensa_get_config ()->xchal_num_aregs)
+
+#undef XCHAL_HAVE_WIDE_BRANCHES
+#define XCHAL_HAVE_WIDE_BRANCHES	(xtensa_get_config ()->xchal_have_wide_branches)
+
+#undef XCHAL_HAVE_PREDICTED_BRANCHES
+#define XCHAL_HAVE_PREDICTED_BRANCHES	(xtensa_get_config ()->xchal_have_predicted_branches)
+
+
+#undef XCHAL_ICACHE_SIZE
+#define XCHAL_ICACHE_SIZE		(xtensa_get_config ()->xchal_icache_size)
+
+#undef XCHAL_DCACHE_SIZE
+#define XCHAL_DCACHE_SIZE		(xtensa_get_config ()->xchal_dcache_size)
+
+#undef XCHAL_ICACHE_LINESIZE
+#define XCHAL_ICACHE_LINESIZE		(xtensa_get_config ()->xchal_icache_linesize)
+
+#undef XCHAL_DCACHE_LINESIZE
+#define XCHAL_DCACHE_LINESIZE		(xtensa_get_config ()->xchal_dcache_linesize)
+
+#undef XCHAL_ICACHE_LINEWIDTH
+#define XCHAL_ICACHE_LINEWIDTH		(xtensa_get_config ()->xchal_icache_linewidth)
+
+#undef XCHAL_DCACHE_LINEWIDTH
+#define XCHAL_DCACHE_LINEWIDTH		(xtensa_get_config ()->xchal_dcache_linewidth)
+
+#undef XCHAL_DCACHE_IS_WRITEBACK
+#define XCHAL_DCACHE_IS_WRITEBACK	(xtensa_get_config ()->xchal_dcache_is_writeback)
+
+
+#undef XCHAL_HAVE_MMU
+#define XCHAL_HAVE_MMU			(xtensa_get_config ()->xchal_have_mmu)
+
+#undef XCHAL_MMU_MIN_PTE_PAGE_SIZE
+#define XCHAL_MMU_MIN_PTE_PAGE_SIZE	(xtensa_get_config ()->xchal_mmu_min_pte_page_size)
+
+
+#undef XCHAL_HAVE_DEBUG
+#define XCHAL_HAVE_DEBUG		(xtensa_get_config ()->xchal_have_debug)
+
+#undef XCHAL_NUM_IBREAK
+#define XCHAL_NUM_IBREAK		(xtensa_get_config ()->xchal_num_ibreak)
+
+#undef XCHAL_NUM_DBREAK
+#define XCHAL_NUM_DBREAK		(xtensa_get_config ()->xchal_num_dbreak)
+
+#undef XCHAL_DEBUGLEVEL
+#define XCHAL_DEBUGLEVEL		(xtensa_get_config ()->xchal_debuglevel)
+
+
+#undef XCHAL_MAX_INSTRUCTION_SIZE
+#define XCHAL_MAX_INSTRUCTION_SIZE	(xtensa_get_config ()->xchal_max_instruction_size)
+
+#undef XCHAL_INST_FETCH_WIDTH
+#define XCHAL_INST_FETCH_WIDTH		(xtensa_get_config ()->xchal_inst_fetch_width)
+
+
+#undef XSHAL_ABI
+#undef XTHAL_ABI_WINDOWED
+#undef XTHAL_ABI_CALL0
+#define XSHAL_ABI			(xtensa_get_config ()->xshal_abi)
+#define XTHAL_ABI_WINDOWED		(xtensa_get_config ()->xthal_abi_windowed)
+#define XTHAL_ABI_CALL0			(xtensa_get_config ()->xthal_abi_call0)
+
+#endif /* XTENSA_CONFIG_DEFINITION */
+
+#ifdef __cplusplus
+}
+#endif
+#endif /* !XTENSA_DYNAMIC_CONFIG_H */
diff --git a/ld/Makefile.am b/ld/Makefile.am
index 15beaa7..40ebcae 100644
--- a/ld/Makefile.am
+++ b/ld/Makefile.am
@@ -1327,6 +1327,7 @@  eelf32xstormy16.c: $(srcdir)/emulparams/elf32xstormy16.sh \
 
 eelf32xtensa.c: $(srcdir)/emulparams/elf32xtensa.sh $(ELF_DEPS) \
   $(srcdir)/emultempl/xtensaelf.em $(INCDIR)/xtensa-config.h \
+  $(INCDIR)/xtensa-dynconfig.h \
   $(BFDDIR)/elf-bfd.h $(INCDIR)/elf/xtensa.h \
   $(srcdir)/scripttempl/elfxtensa.sc ${GEN_DEPENDS}
 
diff --git a/ld/Makefile.in b/ld/Makefile.in
index 042b690..726f14d 100644
--- a/ld/Makefile.in
+++ b/ld/Makefile.in
@@ -2920,6 +2920,7 @@  eelf32xstormy16.c: $(srcdir)/emulparams/elf32xstormy16.sh \
 
 eelf32xtensa.c: $(srcdir)/emulparams/elf32xtensa.sh $(ELF_DEPS) \
   $(srcdir)/emultempl/xtensaelf.em $(INCDIR)/xtensa-config.h \
+  $(INCDIR)/xtensa-dynconfig.h \
   $(BFDDIR)/elf-bfd.h $(INCDIR)/elf/xtensa.h \
   $(srcdir)/scripttempl/elfxtensa.sc ${GEN_DEPENDS}
 
diff --git a/ld/emultempl/xtensaelf.em b/ld/emultempl/xtensaelf.em
index 080b66d..1199399 100644
--- a/ld/emultempl/xtensaelf.em
+++ b/ld/emultempl/xtensaelf.em
@@ -24,7 +24,7 @@ 
 #
 fragment <<EOF
 
-#include <xtensa-config.h>
+#include <xtensa-dynconfig.h>
 #include "../bfd/elf-bfd.h"
 #include "elf/xtensa.h"
 #include "bfd.h"