[PATCH V1] powerpc: Placeholder and infrastructure/build support to add Power11 related changes.

[Amrita H S]

The following three changes have been added to provide
initial Power11 support.
    1. Add the directories to hold Power11 files.
    2. Add support to select Power11 libraries based on AT_PLATFORM.
    3. Let submachine=power11 be set automatically.

Signed-off-by: Amrita H S <amritahs@linux.vnet.ibm.com>
---
 sysdeps/powerpc/dl-procinfo.h                             | 8 +++++++-
 sysdeps/powerpc/powerpc32/power11/Implies                 | 2 ++
 sysdeps/powerpc/powerpc32/power11/fpu/multiarch/Implies   | 1 +
 sysdeps/powerpc/powerpc32/power11/multiarch/Implies       | 1 +
 sysdeps/powerpc/powerpc64/be/power11/Implies              | 2 ++
 sysdeps/powerpc/powerpc64/be/power11/fpu/Implies          | 1 +
 .../powerpc/powerpc64/be/power11/fpu/multiarch/Implies    | 1 +
 sysdeps/powerpc/powerpc64/be/power11/multiarch/Implies    | 1 +
 sysdeps/powerpc/powerpc64/le/power11/Implies              | 2 ++
 sysdeps/powerpc/powerpc64/le/power11/fpu/Implies          | 1 +
 .../powerpc/powerpc64/le/power11/fpu/multiarch/Implies    | 1 +
 sysdeps/powerpc/powerpc64/le/power11/multiarch/Implies    | 1 +
 sysdeps/powerpc/powerpc64/le/tst-glibc-hwcaps.c           | 6 ++++--
 sysdeps/powerpc/preconfigure                              | 2 +-
 sysdeps/powerpc/preconfigure.ac                           | 2 +-
 15 files changed, 27 insertions(+), 5 deletions(-)
 create mode 100644 sysdeps/powerpc/powerpc32/power11/Implies
 create mode 100644 sysdeps/powerpc/powerpc32/power11/fpu/multiarch/Implies
 create mode 100644 sysdeps/powerpc/powerpc32/power11/multiarch/Implies
 create mode 100644 sysdeps/powerpc/powerpc64/be/power11/Implies
 create mode 100644 sysdeps/powerpc/powerpc64/be/power11/fpu/Implies
 create mode 100644 sysdeps/powerpc/powerpc64/be/power11/fpu/multiarch/Implies
 create mode 100644 sysdeps/powerpc/powerpc64/be/power11/multiarch/Implies
 create mode 100644 sysdeps/powerpc/powerpc64/le/power11/Implies
 create mode 100644 sysdeps/powerpc/powerpc64/le/power11/fpu/Implies
 create mode 100644 sysdeps/powerpc/powerpc64/le/power11/fpu/multiarch/Implies
 create mode 100644 sysdeps/powerpc/powerpc64/le/power11/multiarch/Implies

diff --git a/sysdeps/powerpc/dl-procinfo.h b/sysdeps/powerpc/dl-procinfo.h
index 68f4241095..15e26d92e5 100644
--- a/sysdeps/powerpc/dl-procinfo.h
+++ b/sysdeps/powerpc/dl-procinfo.h
@@ -37,7 +37,7 @@
 #define HWCAP_IMPORTANT		(PPC_FEATURE_HAS_ALTIVEC \
 				+ PPC_FEATURE_HAS_DFP)
 
-#define _DL_PLATFORMS_COUNT	16
+#define _DL_PLATFORMS_COUNT	17
 
 #define _DL_FIRST_PLATFORM	32
 /* Mask to filter out platforms.  */
@@ -61,6 +61,7 @@
 #define PPC_PLATFORM_POWER8		13
 #define PPC_PLATFORM_POWER9		14
 #define PPC_PLATFORM_POWER10		15
+#define PPC_PLATFORM_POWER11		16
 
 static inline const char *
 __attribute__ ((unused))
@@ -88,6 +89,11 @@ _dl_string_platform (const char *str)
 	      ret = _DL_FIRST_PLATFORM + PPC_PLATFORM_POWER10;
 	      str++;
 	    }
+	  else if (str[1] == '1')
+	    {
+	      ret = _DL_FIRST_PLATFORM + PPC_PLATFORM_POWER11;
+	      str++;
+	    }
 	  else
 	    return -1;
 	  break;
diff --git a/sysdeps/powerpc/powerpc32/power11/Implies b/sysdeps/powerpc/powerpc32/power11/Implies
new file mode 100644
index 0000000000..051cbe0f79
--- /dev/null
+++ b/sysdeps/powerpc/powerpc32/power11/Implies
@@ -0,0 +1,2 @@
+powerpc/powerpc32/power10/fpu
+powerpc/powerpc32/power10
diff --git a/sysdeps/powerpc/powerpc32/power11/fpu/multiarch/Implies b/sysdeps/powerpc/powerpc32/power11/fpu/multiarch/Implies
new file mode 100644
index 0000000000..58edb2861d
--- /dev/null
+++ b/sysdeps/powerpc/powerpc32/power11/fpu/multiarch/Implies
@@ -0,0 +1 @@
+powerpc/powerpc32/power10/fpu/multiarch
diff --git a/sysdeps/powerpc/powerpc32/power11/multiarch/Implies b/sysdeps/powerpc/powerpc32/power11/multiarch/Implies
new file mode 100644
index 0000000000..c70f0428ba
--- /dev/null
+++ b/sysdeps/powerpc/powerpc32/power11/multiarch/Implies
@@ -0,0 +1 @@
+powerpc/powerpc32/power10/multiarch
diff --git a/sysdeps/powerpc/powerpc64/be/power11/Implies b/sysdeps/powerpc/powerpc64/be/power11/Implies
new file mode 100644
index 0000000000..de481d1c13
--- /dev/null
+++ b/sysdeps/powerpc/powerpc64/be/power11/Implies
@@ -0,0 +1,2 @@
+powerpc/powerpc64/be/power10/fpu
+powerpc/powerpc64/be/power10
diff --git a/sysdeps/powerpc/powerpc64/be/power11/fpu/Implies b/sysdeps/powerpc/powerpc64/be/power11/fpu/Implies
new file mode 100644
index 0000000000..dff0e13064
--- /dev/null
+++ b/sysdeps/powerpc/powerpc64/be/power11/fpu/Implies
@@ -0,0 +1 @@
+powerpc/powerpc64/be/power10/fpu
diff --git a/sysdeps/powerpc/powerpc64/be/power11/fpu/multiarch/Implies b/sysdeps/powerpc/powerpc64/be/power11/fpu/multiarch/Implies
new file mode 100644
index 0000000000..c3f259e009
--- /dev/null
+++ b/sysdeps/powerpc/powerpc64/be/power11/fpu/multiarch/Implies
@@ -0,0 +1 @@
+powerpc/powerpc64/be/power10/fpu/multiarch
diff --git a/sysdeps/powerpc/powerpc64/be/power11/multiarch/Implies b/sysdeps/powerpc/powerpc64/be/power11/multiarch/Implies
new file mode 100644
index 0000000000..9491a394c9
--- /dev/null
+++ b/sysdeps/powerpc/powerpc64/be/power11/multiarch/Implies
@@ -0,0 +1 @@
+powerpc/powerpc64/be/power10/multiarch
diff --git a/sysdeps/powerpc/powerpc64/le/power11/Implies b/sysdeps/powerpc/powerpc64/le/power11/Implies
new file mode 100644
index 0000000000..e18182dcc1
--- /dev/null
+++ b/sysdeps/powerpc/powerpc64/le/power11/Implies
@@ -0,0 +1,2 @@
+powerpc/powerpc64/le/power10/fpu
+powerpc/powerpc64/le/power10
diff --git a/sysdeps/powerpc/powerpc64/le/power11/fpu/Implies b/sysdeps/powerpc/powerpc64/le/power11/fpu/Implies
new file mode 100644
index 0000000000..e41bd55684
--- /dev/null
+++ b/sysdeps/powerpc/powerpc64/le/power11/fpu/Implies
@@ -0,0 +1 @@
+powerpc/powerpc64/le/power10/fpu
diff --git a/sysdeps/powerpc/powerpc64/le/power11/fpu/multiarch/Implies b/sysdeps/powerpc/powerpc64/le/power11/fpu/multiarch/Implies
new file mode 100644
index 0000000000..c838d50931
--- /dev/null
+++ b/sysdeps/powerpc/powerpc64/le/power11/fpu/multiarch/Implies
@@ -0,0 +1 @@
+powerpc/powerpc64/le/power10/fpu/multiarch
diff --git a/sysdeps/powerpc/powerpc64/le/power11/multiarch/Implies b/sysdeps/powerpc/powerpc64/le/power11/multiarch/Implies
new file mode 100644
index 0000000000..687248c3c2
--- /dev/null
+++ b/sysdeps/powerpc/powerpc64/le/power11/multiarch/Implies
@@ -0,0 +1 @@
+powerpc/powerpc64/le/power10/multiarch
diff --git a/sysdeps/powerpc/powerpc64/le/tst-glibc-hwcaps.c b/sysdeps/powerpc/powerpc64/le/tst-glibc-hwcaps.c
index 77465d9133..65d3e69303 100644
--- a/sysdeps/powerpc/powerpc64/le/tst-glibc-hwcaps.c
+++ b/sysdeps/powerpc/powerpc64/le/tst-glibc-hwcaps.c
@@ -36,9 +36,11 @@ compute_level (void)
     return 9;
   if (strcmp (platform, "power10") == 0)
     return 10;
+  if (strcmp (platform, "power11") == 0)
+    return 11;
   printf ("warning: unrecognized AT_PLATFORM value: %s\n", platform);
-  /* Assume that the new platform supports POWER10.  */
-  return 10;
+  /* Assume that the new platform supports POWER11.  */
+  return 11;
 }
 
 static int
diff --git a/sysdeps/powerpc/preconfigure b/sysdeps/powerpc/preconfigure
index 4de94089a3..9e5a07ab6d 100644
--- a/sysdeps/powerpc/preconfigure
+++ b/sysdeps/powerpc/preconfigure
@@ -58,7 +58,7 @@ fi
 
     ;;
 
-  a2|970|power[4-9]|power5x|power6+|power10)
+  a2|970|power[4-9]|power5x|power6+|power10|power11)
     submachine=${archcpu}
     if test ${libc_cv_cc_submachine+y}
 then :
diff --git a/sysdeps/powerpc/preconfigure.ac b/sysdeps/powerpc/preconfigure.ac
index 6c63bd8257..14b6dafd4a 100644
--- a/sysdeps/powerpc/preconfigure.ac
+++ b/sysdeps/powerpc/preconfigure.ac
@@ -46,7 +46,7 @@ case "${machine}:${submachine}" in
     AC_CACHE_VAL(libc_cv_cc_submachine,libc_cv_cc_submachine="")
     ;;
 
-  a2|970|power[[4-9]]|power5x|power6+|power10)
+  a2|970|power[[4-9]]|power5x|power6+|power10|power11)
     submachine=${archcpu}
     AC_CACHE_VAL(libc_cv_cc_submachine,libc_cv_cc_submachine="")
     ;;
-- 
2.44.0