[src/trunk]: src/sys/arch Fix siginfo support for amiga, mac68k, and sun3:

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

details:   https://anonhg.NetBSD.org/src/rev/15599ceece5c
branches:  trunk
changeset: 937169:15599ceece5c
user:      rin <rin%NetBSD.org@localhost>
date:      Mon Aug 10 10:51:21 2020 +0000

description:
Fix siginfo support for amiga, mac68k, and sun3:

- T_ZERODIV is integer divide by zero. Therefore, ksi_code should be
  FPE_INTDIV, not FPE_FLTDIV.

- Set ksi_addr for SIGTRAP. Also, set TRAP_BRKPT or TRAP_TRACE to
  ksi_code appropriately.

This fixes some tests in lib/libc/sys and lib/libc/gen.

XXX
Apply similar fixes to other m68k ports.

diffstat:

 sys/arch/amiga/amiga/trap.c   |  11 ++++++++---
 sys/arch/mac68k/mac68k/trap.c |  13 +++++++++----
 sys/arch/sun3/sun3/trap.c     |  13 +++++++++----
 3 files changed, 26 insertions(+), 11 deletions(-)

diffs (124 lines):

diff -r 90f078647954 -r 15599ceece5c sys/arch/amiga/amiga/trap.c
--- a/sys/arch/amiga/amiga/trap.c       Mon Aug 10 10:42:10 2020 +0000
+++ b/sys/arch/amiga/amiga/trap.c       Mon Aug 10 10:51:21 2020 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: trap.c,v 1.138 2019/11/21 19:23:58 ad Exp $    */
+/*     $NetBSD: trap.c,v 1.139 2020/08/10 10:51:21 rin Exp $   */
 
 /*
  * Copyright (c) 1988 University of Utah.
@@ -45,7 +45,7 @@
 #include "opt_m68k_arch.h"
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: trap.c,v 1.138 2019/11/21 19:23:58 ad Exp $");
+__KERNEL_RCSID(0, "$NetBSD: trap.c,v 1.139 2020/08/10 10:51:21 rin Exp $");
 
 #include <sys/param.h>
 #include <sys/systm.h>
@@ -573,7 +573,7 @@
         * divde by zero, CHK/TRAPV inst
         */
        case T_ZERODIV|T_USER:
-               ksi.ksi_code = FPE_FLTDIV;
+               ksi.ksi_code = FPE_INTDIV;
        case T_CHKINST|T_USER:
        case T_TRAPVINST|T_USER:
                ksi.ksi_addr = (void *)(int)fp->f_format;
@@ -674,7 +674,12 @@
                }
 #endif
                fp->f_sr &= ~PSL_T;
+               ksi.ksi_addr = (void *)fp->f_pc;
                ksi.ksi_signo = SIGTRAP;
+               if (type == (T_TRAP15|T_USER))
+                       ksi.ksi_code = TRAP_BRKPT;
+               else
+                       ksi.ksi_code = TRAP_TRACE;
                break;
        /*
         * Kernel AST (should not happen)
diff -r 90f078647954 -r 15599ceece5c sys/arch/mac68k/mac68k/trap.c
--- a/sys/arch/mac68k/mac68k/trap.c     Mon Aug 10 10:42:10 2020 +0000
+++ b/sys/arch/mac68k/mac68k/trap.c     Mon Aug 10 10:51:21 2020 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: trap.c,v 1.150 2019/11/21 19:24:00 ad Exp $    */
+/*     $NetBSD: trap.c,v 1.151 2020/08/10 10:51:21 rin Exp $   */
 
 /*
  * Copyright (c) 1988 University of Utah.
@@ -39,7 +39,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: trap.c,v 1.150 2019/11/21 19:24:00 ad Exp $");
+__KERNEL_RCSID(0, "$NetBSD: trap.c,v 1.151 2020/08/10 10:51:21 rin Exp $");
 
 #include "opt_ddb.h"
 #include "opt_execfmt.h"
@@ -332,8 +332,8 @@
        /*
         * divde by zero, CHK/TRAPV inst 
         */
-       case T_ZERODIV|T_USER:          /* Divide by zero trap */
-               ksi.ksi_code = FPE_FLTDIV;
+       case T_ZERODIV|T_USER:          /* Integer divide by zero trap */
+               ksi.ksi_code = FPE_INTDIV;
        case T_CHKINST|T_USER:          /* CHK instruction trap */
        case T_TRAPVINST|T_USER:        /* TRAPV instruction trap */
                ksi.ksi_addr = (void *)(int)fp->f_format;
@@ -457,7 +457,12 @@
        case T_TRACE:           /* tracing a trap instruction */
        case T_TRAP15|T_USER:   /* SUN user trace trap */
                fp->f_sr &= ~PSL_T;
+               ksi.ksi_addr = (void *)fp->f_pc;
                ksi.ksi_signo = SIGTRAP;
+               if (type == (T_TRAP15|T_USER))
+                       ksi.ksi_code = TRAP_BRKPT;
+               else
+                       ksi.ksi_code = TRAP_TRACE;
                break;
 
        case T_ASTFLT:          /* System async trap, cannot happen */
diff -r 90f078647954 -r 15599ceece5c sys/arch/sun3/sun3/trap.c
--- a/sys/arch/sun3/sun3/trap.c Mon Aug 10 10:42:10 2020 +0000
+++ b/sys/arch/sun3/sun3/trap.c Mon Aug 10 10:51:21 2020 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: trap.c,v 1.146 2019/11/21 19:24:01 ad Exp $    */
+/*     $NetBSD: trap.c,v 1.147 2020/08/10 10:51:21 rin Exp $   */
 
 /*
  * Copyright (c) 1982, 1986, 1990, 1993
@@ -78,7 +78,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: trap.c,v 1.146 2019/11/21 19:24:01 ad Exp $");
+__KERNEL_RCSID(0, "$NetBSD: trap.c,v 1.147 2020/08/10 10:51:21 rin Exp $");
 
 #include "opt_ddb.h"
 #include "opt_execfmt.h"
@@ -404,8 +404,8 @@
                        ILL_PRVOPC : ILL_ILLOPC;
                break;
 
-       case T_ZERODIV|T_USER:  /* Divide by zero */
-               ksi.ksi_code = FPE_FLTDIV;
+       case T_ZERODIV|T_USER:  /* Integer divide by zero */
+               ksi.ksi_code = FPE_INTDIV;
        case T_CHKINST|T_USER:  /* CHK instruction trap */
        case T_TRAPVINST|T_USER:        /* TRAPV instruction trap */
                ksi.ksi_addr = (void *)(int)tf->tf_format;
@@ -450,7 +450,12 @@
        case T_TRACE:           /* tracing a trap instruction */
        case T_TRAP15|T_USER:   /* SUN user trace trap */
                tf->tf_sr &= ~PSL_T;
+               ksi.ksi_addr = (void *)tf->tf_pc;
                ksi.ksi_signo = SIGTRAP;
+               if (type == (T_TRAP15|T_USER))
+                       ksi.ksi_code = TRAP_BRKPT;
+               else
+                       ksi.ksi_code = TRAP_TRACE;
                break;
 
        case T_ASTFLT:          /* system async trap, cannot happen */