[src/trunk]: src/sys/arch/mips fix "uname -p" on mips n32.

[mrg <mrg%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/b36df97f1df0
branches:  trunk
changeset: 1021287:b36df97f1df0
user:      mrg <mrg%NetBSD.org@localhost>
date:      Sun May 23 23:24:45 2021 +0000

description:
fix "uname -p" on mips n32.

this has been returning "mipsn64eb" on my edgerouter4 with the
32 bit uname binary.

introduce o32, n32, and n64 versions of MACHINE_ARCH, and use
them appropriately in PROC_MACHINE_ARCH32().  now o32, n32 and
n64 "uname -p" all return different values.

diffstat:

 sys/arch/mips/include/mips_param.h       |  27 ++++++++++++++++++---------
 sys/arch/mips/include/netbsd32_machdep.h |  15 +++++++++++----
 sys/arch/mips/mips/cpu_exec.c            |   6 +++---
 sys/arch/mips/mips/netbsd32_machdep.c    |  11 +++++++----
 4 files changed, 39 insertions(+), 20 deletions(-)

diffs (142 lines):

diff -r 961cc876aa07 -r b36df97f1df0 sys/arch/mips/include/mips_param.h
--- a/sys/arch/mips/include/mips_param.h        Sun May 23 23:22:55 2021 +0000
+++ b/sys/arch/mips/include/mips_param.h        Sun May 23 23:24:45 2021 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: mips_param.h,v 1.49 2021/05/08 13:09:58 skrll Exp $    */
+/*     $NetBSD: mips_param.h,v 1.50 2021/05/23 23:24:45 mrg Exp $      */
 
 /*-
  * Copyright (c) 2013 The NetBSD Foundation, Inc.
@@ -38,19 +38,28 @@
 # error neither __MIPSEL__ nor __MIPSEB__ are defined.
 #endif
 
+#define        ___MACHINE32_OARCH              mips##_MACHINE_SUFFIX
+#define        __MACHINE32_OARCH               "mips" MACHINE_SUFFIX
+#define        ___MACHINE32_NARCH              mips64##_MACHINE_SUFFIX
+#define        __MACHINE32_NARCH               "mips64" MACHINE_SUFFIX
+#define        ___MACHINE64_NARCH              mipsn64##_MACHINE_SUFFIX
+#define        __MACHINE64_NARCH               "mipsn64" MACHINE_SUFFIX
+
 #if defined(__mips_n32) || defined(__mips_n64)
 # if defined(__mips_n32)
-#  define      _MACHINE_ARCH   mips64##_MACHINE_SUFFIX
-#  define      MACHINE_ARCH    "mips64" MACHINE_SUFFIX
+#  define      _MACHINE_ARCH           ___MACHINE32_NARCH
+#  define      MACHINE_ARCH            __MACHINE32_NARCH
 # else /* __mips_n64 */
-#  define      _MACHINE_ARCH   mipsn64##_MACHINE_SUFFIX
-#  define      MACHINE_ARCH    "mipsn64" MACHINE_SUFFIX
+#  define      _MACHINE_ARCH           ___MACHINE64_NARCH
+#  define      MACHINE_ARCH            __MACHINE64_NARCH
+#  define      _MACHINE32_NARCH        ___MACHINE32_NARCH
+#  define      MACHINE32_NARCH         __MACHINE32_NARCH
 # endif
-# define       _MACHINE32_ARCH mips##_MACHINE_SUFFIX
-# define       MACHINE32_ARCH  "mips" MACHINE_SUFFIX
+# define       _MACHINE32_OARCH        ___MACHINE32_OARCH
+# define       MACHINE32_OARCH         __MACHINE32_OARCH
 #else /* o32 */
-# define       _MACHINE_ARCH   mips##_MACHINE_SUFFIX
-# define       MACHINE_ARCH    "mips" MACHINE_SUFFIX
+# define       _MACHINE_ARCH           ___MACHINE32_OARCH
+# define       MACHINE_ARCH            __MACHINE32_OARCH
 #endif
 
 /*
diff -r 961cc876aa07 -r b36df97f1df0 sys/arch/mips/include/netbsd32_machdep.h
--- a/sys/arch/mips/include/netbsd32_machdep.h  Sun May 23 23:22:55 2021 +0000
+++ b/sys/arch/mips/include/netbsd32_machdep.h  Sun May 23 23:24:45 2021 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: netbsd32_machdep.h,v 1.6 2020/07/26 08:08:41 simonb Exp $      */
+/*     $NetBSD: netbsd32_machdep.h,v 1.7 2021/05/23 23:24:45 mrg Exp $ */
 
 /*-
  * Copyright (c) 2009 The NetBSD Foundation, Inc.
@@ -44,10 +44,17 @@
 
 typedef netbsd32_pointer_t                     netbsd32_sigcontextp_t;
 
-/* Support varying ABI names for netbsd32 */
-extern const char machine_arch32[];
+/* Support varying ABI names for netbsd32/ABI */
+extern const char machine_archo32[];
+#if defined(__mips_n64)
+extern const char machine_archn32[];
 #define        PROC_MACHINE_ARCH32(P)  ((P)->p_md.md_abi == _MIPS_BSD_API_O32) ? \
-       __UNCONST(machine_arch32) : machine_arch
+       __UNCONST(machine_archo32) : ((P)->p_md.md_abi == _MIPS_BSD_API_N32) ? \
+       __UNCONST(machine_archn32) : machine_arch
+#else
+#define        PROC_MACHINE_ARCH32(P)  ((P)->p_md.md_abi == _MIPS_BSD_API_O32) ? \
+       __UNCONST(machine_archo32) : machine_arch
+#endif
 
 /*
  * The sigcode is ABI neutral.
diff -r 961cc876aa07 -r b36df97f1df0 sys/arch/mips/mips/cpu_exec.c
--- a/sys/arch/mips/mips/cpu_exec.c     Sun May 23 23:22:55 2021 +0000
+++ b/sys/arch/mips/mips/cpu_exec.c     Sun May 23 23:24:45 2021 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: cpu_exec.c,v 1.67 2018/08/19 10:33:49 mrg Exp $        */
+/*     $NetBSD: cpu_exec.c,v 1.68 2021/05/23 23:24:45 mrg Exp $        */
 
 /*
  * Copyright (c) 1992, 1993
@@ -35,7 +35,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: cpu_exec.c,v 1.67 2018/08/19 10:33:49 mrg Exp $");
+__KERNEL_RCSID(0, "$NetBSD: cpu_exec.c,v 1.68 2021/05/23 23:24:45 mrg Exp $");
 
 #include "opt_compat_netbsd.h"
 #include "opt_compat_ultrix.h"
@@ -201,7 +201,7 @@
                eh->e_flags |= EF_MIPS_ABI2;
                break;
        case _MIPS_BSD_API_O32:
-               eh->e_flags |=EF_MIPS_ABI_O32; 
+               eh->e_flags |= EF_MIPS_ABI_O32; 
                break;
        }
 }
diff -r 961cc876aa07 -r b36df97f1df0 sys/arch/mips/mips/netbsd32_machdep.c
--- a/sys/arch/mips/mips/netbsd32_machdep.c     Sun May 23 23:22:55 2021 +0000
+++ b/sys/arch/mips/mips/netbsd32_machdep.c     Sun May 23 23:24:45 2021 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: netbsd32_machdep.c,v 1.20 2019/12/12 02:15:42 pgoyette Exp $   */
+/*     $NetBSD: netbsd32_machdep.c,v 1.21 2021/05/23 23:24:45 mrg Exp $        */
 
 /*-
  * Copyright (c) 2009 The NetBSD Foundation, Inc.
@@ -30,7 +30,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: netbsd32_machdep.c,v 1.20 2019/12/12 02:15:42 pgoyette Exp $");
+__KERNEL_RCSID(0, "$NetBSD: netbsd32_machdep.c,v 1.21 2021/05/23 23:24:45 mrg Exp $");
 
 #include "opt_compat_netbsd.h"
 
@@ -67,7 +67,10 @@
 #include <uvm/uvm_extern.h>
 
 const char machine32[] = MACHINE;
-const char machine_arch32[] = MACHINE32_ARCH;
+const char machine_archo32[] = MACHINE32_OARCH;
+#ifdef MACHINE32_NARCH
+const char machine_archn32[] = MACHINE32_NARCH;
+#endif
 
 #if 0
 cpu_coredump32
@@ -321,7 +324,7 @@
 netbsd32_machine32(void)
 {
 
-       return machine32;
+       return PROC_MACHINE_ARCH32(curproc);
 }
 
 void