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[src/trunk]: src/sys/arch/riscv Miscellaneous updates to reflect riscv-privil...



details:   https://anonhg.NetBSD.org/src/rev/b394656eefb7
branches:  trunk
changeset: 977915:b394656eefb7
user:      skrll <skrll%NetBSD.org@localhost>
date:      Wed Nov 04 20:04:01 2020 +0000

description:
Miscellaneous updates to reflect riscv-privileged-20190608.pdf

Some from zmcgrew@

diffstat:

 sys/arch/riscv/include/sysreg.h      |  12 ++++++------
 sys/arch/riscv/riscv/genassym.cf     |  12 ++++++++++--
 sys/arch/riscv/riscv/locore.S        |  11 +----------
 sys/arch/riscv/riscv/riscv_machdep.c |   6 ++++--
 sys/arch/riscv/riscv/trap.c          |   6 +++---
 sys/arch/riscv/riscv/vm_machdep.c    |  14 ++++++--------
 6 files changed, 30 insertions(+), 31 deletions(-)

diffs (183 lines):

diff -r 5602d4691d3a -r b394656eefb7 sys/arch/riscv/include/sysreg.h
--- a/sys/arch/riscv/include/sysreg.h   Wed Nov 04 19:27:53 2020 +0000
+++ b/sys/arch/riscv/include/sysreg.h   Wed Nov 04 20:04:01 2020 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: sysreg.h,v 1.9 2020/11/04 06:56:56 skrll Exp $ */
+/* $NetBSD: sysreg.h,v 1.10 2020/11/04 20:05:47 skrll Exp $ */
 
 /*
  * Copyright (c) 2014 The NetBSD Foundation, Inc.
@@ -167,12 +167,12 @@
 #define SIE_IM         (SIE_SEI|SIE_UEIE|SIE_STIE|SIE_UTIE|SIE_SSIE|SIE_USIE)
 
 #ifdef _LP64
-#define        SR_USER         (SR_UIE | SR_U64 | SR_S64 | SR_IM)
-#define        SR_USER32       (SR_USER & ~SR_U64)
-#define        SR_KERNEL       (SR_S | SR_UIE | SR_U64 | SR_S64)
+#define        SR_USER         (SR_UIE)
+#define        SR_USER32       (SR_USER)
+#define        SR_KERNEL       (SR_SIE | SR_UIE)
 #else
-#define        SR_USER         (SR_UIE||SR_IM)
-#define        SR_KERNEL       (SR_S|SR_UIE)
+#define        SR_USER         (SR_UIE)
+#define        SR_KERNEL       (SR_SIE | SR_UIE)
 #endif
 
 static inline uint32_t
diff -r 5602d4691d3a -r b394656eefb7 sys/arch/riscv/riscv/genassym.cf
--- a/sys/arch/riscv/riscv/genassym.cf  Wed Nov 04 19:27:53 2020 +0000
+++ b/sys/arch/riscv/riscv/genassym.cf  Wed Nov 04 20:04:01 2020 +0000
@@ -1,4 +1,4 @@
-#      $NetBSD: genassym.cf,v 1.9 2020/11/04 07:51:08 skrll Exp $
+#      $NetBSD: genassym.cf,v 1.10 2020/11/04 20:05:47 skrll Exp $
 #-
 # Copyright (c) 2014 The NetBSD Foundation, Inc.
 # All rights reserved.
@@ -62,6 +62,14 @@
 
 define CAUSE_SYSCALL   CAUSE_SYSCALL
 
+ifdef _LP64
+define SATP_MODE_MASK  SATP_MODE
+define SATP_MODE_SV39  __SHIFTIN(SATP_MODE_SV39, SATP_MODE)
+define SATP_MODE_SV48  __SHIFTIN(SATP_MODE_SV48, SATP_MODE)
+else
+define SATP_MODE_SV32  __SHIFTIN(SATP_MODE_SV32, SATP_MODE)
+endif
+
 define IPL_HIGH        IPL_HIGH
 define IPL_DDB         IPL_DDB
 define IPL_SCHED       IPL_SCHED
@@ -108,7 +116,7 @@
 define TF_GP           offsetof(struct trapframe, tf_reg[_X_GP])
 define TF_PC           offsetof(struct trapframe, tf_pc)
 define TF_CAUSE        offsetof(struct trapframe, tf_cause)
-define TF_TVA  L       offsetof(struct trapframe, tf_tval)
+define TF_TVAL         offsetof(struct trapframe, tf_tval)
 define TF_SR           offsetof(struct trapframe, tf_sr)
 
 define L_CPU           offsetof(struct lwp, l_cpu)
diff -r 5602d4691d3a -r b394656eefb7 sys/arch/riscv/riscv/locore.S
--- a/sys/arch/riscv/riscv/locore.S     Wed Nov 04 19:27:53 2020 +0000
+++ b/sys/arch/riscv/riscv/locore.S     Wed Nov 04 20:04:01 2020 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: locore.S,v 1.15 2020/11/04 07:09:46 skrll Exp $ */
+/* $NetBSD: locore.S,v 1.16 2020/11/04 20:05:47 skrll Exp $ */
 
 /*-
  * Copyright (c) 2014 The NetBSD Foundation, Inc.
@@ -39,15 +39,6 @@
        // We get loaded and starting running at or near 0, not where we
        // should be. We need to construct an initial PDETAB
 
-#ifdef _LP64
-       li      t0, SR_U64|SR_S64
-       li      t1, SR_IM|SR_SIE
-       csrs    sstatus, t0
-#else
-       li      t1, SR_IM|SR_U64|SR_S64|SR_EI
-#endif
-       csrc    sstatus, t1
-
        li      s11, VM_MAX_KERNEL_ADDRESS
        li      s10, PAGE_SIZE
        li      s9, USPACE
diff -r 5602d4691d3a -r b394656eefb7 sys/arch/riscv/riscv/riscv_machdep.c
--- a/sys/arch/riscv/riscv/riscv_machdep.c      Wed Nov 04 19:27:53 2020 +0000
+++ b/sys/arch/riscv/riscv/riscv_machdep.c      Wed Nov 04 20:04:01 2020 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: riscv_machdep.c,v 1.12 2020/11/04 07:09:46 skrll Exp $ */
+/*     $NetBSD: riscv_machdep.c,v 1.13 2020/11/04 20:05:47 skrll Exp $ */
 
 /*-
  * Copyright (c) 2014, 2019 The NetBSD Foundation, Inc.
@@ -33,7 +33,7 @@
 
 #include "opt_modular.h"
 
-__RCSID("$NetBSD: riscv_machdep.c,v 1.12 2020/11/04 07:09:46 skrll Exp $");
+__RCSID("$NetBSD: riscv_machdep.c,v 1.13 2020/11/04 20:05:47 skrll Exp $");
 
 #include <sys/param.h>
 #include <sys/systm.h>
@@ -124,7 +124,9 @@
 
        tf->tf_a0 = 0;
        tf->tf_a1 = 1;
+#ifdef FPE
        tf->tf_sr &= ~SR_EF;            /* Disable FP as we can't be them. */
+#endif
 }
 
 void
diff -r 5602d4691d3a -r b394656eefb7 sys/arch/riscv/riscv/trap.c
--- a/sys/arch/riscv/riscv/trap.c       Wed Nov 04 19:27:53 2020 +0000
+++ b/sys/arch/riscv/riscv/trap.c       Wed Nov 04 20:04:01 2020 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: trap.c,v 1.12 2020/11/04 07:09:46 skrll Exp $  */
+/*     $NetBSD: trap.c,v 1.13 2020/11/04 20:04:01 skrll Exp $  */
 
 /*-
  * Copyright (c) 2014 The NetBSD Foundation, Inc.
@@ -34,7 +34,7 @@
 #define __PMAP_PRIVATE
 #define __UFETCHSTORE_PRIVATE
 
-__RCSID("$NetBSD: trap.c,v 1.12 2020/11/04 07:09:46 skrll Exp $");
+__RCSID("$NetBSD: trap.c,v 1.13 2020/11/04 20:04:01 skrll Exp $");
 
 #include <sys/param.h>
 #include <sys/systm.h>
@@ -372,7 +372,7 @@
 {
        const u_int fault_mask = 1U << cause;
        const intptr_t addr = tval;
-       const bool usertrap_p = (status & SR_PS) == 0;
+       const bool usertrap_p = (status & SR_SPP) == 0;
        bool ok = true;
        ksiginfo_t ksi;
 
diff -r 5602d4691d3a -r b394656eefb7 sys/arch/riscv/riscv/vm_machdep.c
--- a/sys/arch/riscv/riscv/vm_machdep.c Wed Nov 04 19:27:53 2020 +0000
+++ b/sys/arch/riscv/riscv/vm_machdep.c Wed Nov 04 20:04:01 2020 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: vm_machdep.c,v 1.3 2020/03/14 16:12:16 skrll Exp $     */
+/*     $NetBSD: vm_machdep.c,v 1.4 2020/11/04 20:04:01 skrll Exp $     */
 
 /*-
  * Copyright (c) 2014 The NetBSD Foundation, Inc.
@@ -30,7 +30,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: vm_machdep.c,v 1.3 2020/03/14 16:12:16 skrll Exp $");
+__KERNEL_RCSID(0, "$NetBSD: vm_machdep.c,v 1.4 2020/11/04 20:04:01 skrll Exp $");
 
 #define _PMAP_PRIVATE
 
@@ -91,7 +91,9 @@
        vaddr_t ua2 = uvm_lwp_getuarea(l2);
        tf = (struct trapframe *)(ua2 + USPACE) - 1;
        *tf = *l1->l_md.md_utf;
+#ifdef FPE
        tf->tf_sr &= ~SR_EF;    /* floating point must be disabled */
+#endif
 
        /* If specified, set a different user stack for a child. */
        if (stack != NULL) {
@@ -114,12 +116,8 @@
        tf->tf_s0 = (intptr_t)func;                     /* S0 */
        tf->tf_s1 = (intptr_t)arg;                      /* S1 */
        tf->tf_ra = (intptr_t)cpu_lwp_trampoline;       /* RA */
-       l2->l_md.md_ktf = tf;                                   /* SP */
-       KASSERT(tf->tf_sr & SR_S);
-#ifdef _LP64
-       KASSERT(tf->tf_sr & SR_S64);
-#endif
-       KASSERT(tf->tf_sr & SR_EI);
+       l2->l_md.md_ktf = tf;                           /* SP */
+       KASSERT(tf->tf_sr & SR_SIE);
 }
 
 /*



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