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[src/trunk]: src apply changes equivalent to freebsd r256822, r267759 and r29...
details: https://anonhg.NetBSD.org/src/rev/babc687be92d
branches: trunk
changeset: 351783:babc687be92d
user: chs <chs%NetBSD.org@localhost>
date: Mon Feb 27 06:46:59 2017 +0000
description:
apply changes equivalent to freebsd r256822, r267759 and r298171:
fix the dtrace "args" variable to return correct values.
simplify the invop handlers a bit by changing the second argument
from a pointer into the stack to a pointer to the trapframe.
diffstat:
external/cddl/osnet/dev/dtrace/amd64/dtrace_asm.S | 7 +--
external/cddl/osnet/dev/dtrace/amd64/dtrace_isa.c | 41 ++++++++++++---
external/cddl/osnet/dev/dtrace/amd64/dtrace_subr.c | 16 +++---
external/cddl/osnet/dev/dtrace/arm/dtrace_subr.c | 14 ++--
external/cddl/osnet/dev/dtrace/i386/dtrace_asm.S | 42 ++++++++++++++--
external/cddl/osnet/dev/dtrace/i386/dtrace_isa.c | 26 ++++++----
external/cddl/osnet/dev/dtrace/i386/dtrace_subr.c | 14 ++--
external/cddl/osnet/dev/fbt/fbt.c | 55 ++++++++++++++++-----
external/cddl/osnet/dist/uts/common/sys/dtrace.h | 7 ++-
sys/arch/arm/arm/undefined.c | 8 +-
sys/arch/i386/i386/i386_trap.S | 7 +-
11 files changed, 160 insertions(+), 77 deletions(-)
diffs (truncated from 595 to 300 lines):
diff -r f3b0f7d45509 -r babc687be92d external/cddl/osnet/dev/dtrace/amd64/dtrace_asm.S
--- a/external/cddl/osnet/dev/dtrace/amd64/dtrace_asm.S Mon Feb 27 05:41:36 2017 +0000
+++ b/external/cddl/osnet/dev/dtrace/amd64/dtrace_asm.S Mon Feb 27 06:46:59 2017 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: dtrace_asm.S,v 1.6 2016/06/23 04:35:35 pgoyette Exp $ */
+/* $NetBSD: dtrace_asm.S,v 1.7 2017/02/27 06:46:59 chs Exp $ */
/*
* CDDL HEADER START
@@ -72,13 +72,10 @@
*/
movq TF_RIP(%rsp), %rdi
decq %rdi
- movq TF_RSP(%rsp), %rsi
+ movq %rsp, %rsi
movq TF_RAX(%rsp), %rdx
- pushq (%rsi)
- movq %rsp, %rsi
call dtrace_invop
ALTENTRY(dtrace_invop_callsite)
- addq $8, %rsp
cmpl $DTRACE_INVOP_PUSHL_EBP, %eax
je bp_push
cmpl $DTRACE_INVOP_LEAVE, %eax
diff -r f3b0f7d45509 -r babc687be92d external/cddl/osnet/dev/dtrace/amd64/dtrace_isa.c
--- a/external/cddl/osnet/dev/dtrace/amd64/dtrace_isa.c Mon Feb 27 05:41:36 2017 +0000
+++ b/external/cddl/osnet/dev/dtrace/amd64/dtrace_isa.c Mon Feb 27 06:46:59 2017 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: dtrace_isa.c,v 1.5 2016/05/14 21:19:05 chs Exp $ */
+/* $NetBSD: dtrace_isa.c,v 1.6 2017/02/27 06:46:59 chs Exp $ */
/*
* CDDL HEADER START
@@ -47,10 +47,9 @@
#define INKERNEL(va) ((intptr_t)(va) < 0)
-struct amd64_frame {
+struct amd64_frame {
struct amd64_frame *f_frame;
- uintptr_t f_retaddr;
- uintptr_t f_arg0;
+ uintptr_t f_retaddr;
};
typedef unsigned long vm_offset_t;
@@ -355,7 +354,8 @@
for (i = 1; i <= aframes; i++) {
fp = fp->f_frame;
- if (fp->f_retaddr == (long)dtrace_invop_callsite) {
+ if (P2ROUNDUP(fp->f_retaddr, 16) ==
+ (long)dtrace_invop_callsite) {
/*
* In the case of amd64, we will use the pointer to the
* regs structure that was pushed when we took the
@@ -369,13 +369,36 @@
* we're seeking is passed in registers, we can just
* load it directly.
*/
- struct reg *rp = (struct reg *)((uintptr_t)&fp[1] +
- sizeof (uintptr_t));
+ struct trapframe *tf = (struct trapframe *)&fp[1];
if (arg <= inreg) {
- stack = (uintptr_t *)&rp->regs[_REG_RDI];
+ switch (arg) {
+ case 0:
+ stack = (uintptr_t *)&tf->tf_rdi;
+ break;
+ case 1:
+ stack = (uintptr_t *)&tf->tf_rsi;
+ break;
+ case 2:
+ stack = (uintptr_t *)&tf->tf_rdx;
+ break;
+ case 3:
+ stack = (uintptr_t *)&tf->tf_rcx;
+ break;
+ case 4:
+ stack = (uintptr_t *)&tf->tf_r8;
+ break;
+ case 5:
+ stack = (uintptr_t *)&tf->tf_r9;
+ break;
+ default:
+ KASSERT(0);
+ stack = NULL;
+ break;
+ }
+ arg = 0;
} else {
- stack = (uintptr_t *)(rp->regs[_REG_RSP]);
+ stack = (uintptr_t *)(tf->tf_rsp);
arg -= inreg;
}
goto load;
diff -r f3b0f7d45509 -r babc687be92d external/cddl/osnet/dev/dtrace/amd64/dtrace_subr.c
--- a/external/cddl/osnet/dev/dtrace/amd64/dtrace_subr.c Mon Feb 27 05:41:36 2017 +0000
+++ b/external/cddl/osnet/dev/dtrace/amd64/dtrace_subr.c Mon Feb 27 06:46:59 2017 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: dtrace_subr.c,v 1.7 2012/06/16 17:31:47 chs Exp $ */
+/* $NetBSD: dtrace_subr.c,v 1.8 2017/02/27 06:46:59 chs Exp $ */
/*
* CDDL HEADER START
@@ -51,32 +51,32 @@
extern uintptr_t dtrace_in_probe_addr;
extern int dtrace_in_probe;
-int dtrace_invop(uintptr_t, uintptr_t *, uintptr_t);
+int dtrace_invop(uintptr_t, struct trapframe *, uintptr_t);
typedef struct dtrace_invop_hdlr {
- int (*dtih_func)(uintptr_t, uintptr_t *, uintptr_t);
+ int (*dtih_func)(uintptr_t, struct trapframe *, uintptr_t);
struct dtrace_invop_hdlr *dtih_next;
} dtrace_invop_hdlr_t;
dtrace_invop_hdlr_t *dtrace_invop_hdlr;
+
void dtrace_gethrtime_init(void *);
-
int
-dtrace_invop(uintptr_t addr, uintptr_t *stack, uintptr_t eax)
+dtrace_invop(uintptr_t addr, struct trapframe *frame, uintptr_t eax)
{
dtrace_invop_hdlr_t *hdlr;
int rval;
for (hdlr = dtrace_invop_hdlr; hdlr != NULL; hdlr = hdlr->dtih_next)
- if ((rval = hdlr->dtih_func(addr, stack, eax)) != 0)
+ if ((rval = hdlr->dtih_func(addr, frame, eax)) != 0)
return (rval);
return (0);
}
void
-dtrace_invop_add(int (*func)(uintptr_t, uintptr_t *, uintptr_t))
+dtrace_invop_add(int (*func)(uintptr_t, struct trapframe *, uintptr_t))
{
dtrace_invop_hdlr_t *hdlr;
@@ -87,7 +87,7 @@
}
void
-dtrace_invop_remove(int (*func)(uintptr_t, uintptr_t *, uintptr_t))
+dtrace_invop_remove(int (*func)(uintptr_t, struct trapframe *, uintptr_t))
{
dtrace_invop_hdlr_t *hdlr = dtrace_invop_hdlr, *prev = NULL;
diff -r f3b0f7d45509 -r babc687be92d external/cddl/osnet/dev/dtrace/arm/dtrace_subr.c
--- a/external/cddl/osnet/dev/dtrace/arm/dtrace_subr.c Mon Feb 27 05:41:36 2017 +0000
+++ b/external/cddl/osnet/dev/dtrace/arm/dtrace_subr.c Mon Feb 27 06:46:59 2017 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: dtrace_subr.c,v 1.2 2014/03/10 03:04:57 ozaki-r Exp $ */
+/* $NetBSD: dtrace_subr.c,v 1.3 2017/02/27 06:47:00 chs Exp $ */
/*
* CDDL HEADER START
@@ -52,10 +52,10 @@
extern int dtrace_in_probe;
extern dtrace_id_t dtrace_probeid_error;
-int dtrace_invop(uintptr_t, uintptr_t *, uintptr_t);
+int dtrace_invop(uintptr_t, struct trapframe *, uintptr_t);
typedef struct dtrace_invop_hdlr {
- int (*dtih_func)(uintptr_t, uintptr_t *, uintptr_t);
+ int (*dtih_func)(uintptr_t, struct trapframe *, uintptr_t);
struct dtrace_invop_hdlr *dtih_next;
} dtrace_invop_hdlr_t;
@@ -64,20 +64,20 @@
void dtrace_gethrtime_init(void *arg);
int
-dtrace_invop(uintptr_t addr, uintptr_t *stack, uintptr_t eax)
+dtrace_invop(uintptr_t addr, struct trapframe *frame, uintptr_t eax)
{
dtrace_invop_hdlr_t *hdlr;
int rval;
for (hdlr = dtrace_invop_hdlr; hdlr != NULL; hdlr = hdlr->dtih_next)
- if ((rval = hdlr->dtih_func(addr, stack, eax)) != 0)
+ if ((rval = hdlr->dtih_func(addr, frame, eax)) != 0)
return (rval);
return (0);
}
void
-dtrace_invop_add(int (*func)(uintptr_t, uintptr_t *, uintptr_t))
+dtrace_invop_add(int (*func)(uintptr_t, struct trapframe *, uintptr_t))
{
dtrace_invop_hdlr_t *hdlr;
@@ -88,7 +88,7 @@
}
void
-dtrace_invop_remove(int (*func)(uintptr_t, uintptr_t *, uintptr_t))
+dtrace_invop_remove(int (*func)(uintptr_t, struct trapframe *, uintptr_t))
{
dtrace_invop_hdlr_t *hdlr = dtrace_invop_hdlr, *prev = NULL;
diff -r f3b0f7d45509 -r babc687be92d external/cddl/osnet/dev/dtrace/i386/dtrace_asm.S
--- a/external/cddl/osnet/dev/dtrace/i386/dtrace_asm.S Mon Feb 27 05:41:36 2017 +0000
+++ b/external/cddl/osnet/dev/dtrace/i386/dtrace_asm.S Mon Feb 27 06:46:59 2017 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: dtrace_asm.S,v 1.5 2016/06/23 04:35:35 pgoyette Exp $ */
+/* $NetBSD: dtrace_asm.S,v 1.6 2017/02/27 06:47:00 chs Exp $ */
/*
* CDDL HEADER START
@@ -30,17 +30,45 @@
#define _ASM
+#include "assym.h"
+
#include <sys/cpuvar_defs.h>
#include <sys/dtrace.h>
#include <machine/asm.h>
#include <machine/frameasm.h>
+#include <machine/trap.h>
+
+#define INTR_POP \
+ addl $16, %esp; \
+ popl %edi; \
+ popl %esi; \
+ popl %ebp; \
+ popl %ebx; \
+ popl %edx; \
+ popl %ecx; \
+ popl %eax; \
+ addl $8, %esp
ENTRY(dtrace_invop_start)
+
+ /* Store a trapframe for dtrace. */
+ pushl $0
+ pushl $T_PRIVINFLT
+ pushl %eax
+ pushl %ecx
+ pushl %edx
+ pushl %ebx
+ pushl %ebp
+ pushl %esi
+ pushl %edi
+ subl $16,%esp /* dummy for segment regs */
+ cld
+ /* Store the args to dtrace_invop(). */
pushl %eax /* push %eax -- may be return value */
pushl %esp /* push stack pointer */
- addl $48, (%esp) /* adjust to incoming args */
- pushl 40(%esp) /* push calling EIP */
+ addl $4, (%esp) /* skip first arg and segment regs */
+ pushl TF_EIP+8(%esp) /* push calling EIP */
/*
* Call dtrace_invop to let it check if the exception was
@@ -67,7 +95,7 @@
* We must emulate a "pushl %ebp". To do this, we pull the stack
* down 4 bytes, and then store the base pointer.
*/
- popal
+ INTR_POP
subl $4, %esp /* make room for %ebp */
pushl %eax /* push temp */
movl 8(%esp), %eax /* load calling EIP */
@@ -86,7 +114,7 @@
* the above: we remove the %ebp from the stack, and squeeze up the
* saved state from the trap.
*/
- popal
+ INTR_POP
pushl %eax /* push temp */
movl 16(%esp), %ebp /* pop %ebp */
movl 12(%esp), %eax /* load calling EFLAGS */
@@ -106,7 +134,7 @@
* requires two temporaries: one for the new base pointer, and one
* for the staging register.
*/
- popa
+ INTR_POP
pushl %eax /* push temp */
pushl %ebx /* push temp */
movl %ebp, %ebx /* set temp to old %ebp */
@@ -129,7 +157,7 @@
* We must emulate a "nop". This is obviously not hard: we need only
* advance the %eip by one.
*/
- popa
+ INTR_POP
incl (%esp)
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