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Initial version of DTrace on ARM32.

Browse Source 
Submitted by:	Howard Su based on work by Oleksandr Tymoshenko
Reviewed by:	ian, andrew, rpaulo, markj
This commit is contained in:
George V. Neville-Neil 2015-02-10 19:41:30 +00:00
parent 950813c487
commit fcb5606706
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=278529
27 changed files with 2610 additions and 8 deletions
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190
cddl/contrib/opensolaris/lib/libdtrace/arm/dt_isadep.c Normal file
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@ -0,0 +1,190 @@
/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License, Version 1.0 only
* (the "License"). You may not use this file except in compliance
* with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 2005 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
* Copyright 2014 Howard Su
* Copyright 2015 George V. Neville-Neil
*
*/
#pragma ident "%Z%%M% %I% %E% SMI"
#include <stdlib.h>
#include <assert.h>
#include <errno.h>
#include <string.h>
#include <libgen.h>
#include <dt_impl.h>
#include <dt_pid.h>
#if !defined(sun)
#define PR_MODEL_ILP32 1
#define PR_MODEL_LP64 2
#include <libproc_compat.h>
#endif
#define OP(x) ((x) >> 30)
#define OP2(x) (((x) >> 22) & 0x07)
#define COND(x) (((x) >> 25) & 0x0f)
#define A(x) (((x) >> 29) & 0x01)
#define OP_BRANCH 0
#define OP2_BPcc 0x1
#define OP2_Bicc 0x2
#define OP2_BPr 0x3
#define OP2_FBPfcc 0x5
#define OP2_FBfcc 0x6
/*ARGSUSED*/
int
dt_pid_create_entry_probe(struct ps_prochandle *P, dtrace_hdl_t *dtp,
fasttrap_probe_spec_t *ftp, const GElf_Sym *symp)
{
ftp->ftps_type = DTFTP_ENTRY;
ftp->ftps_pc = (uintptr_t)symp->st_value;
ftp->ftps_size = (size_t)symp->st_size;
ftp->ftps_noffs = 1;
ftp->ftps_offs[0] = 0;
if (ioctl(dtp->dt_ftfd, FASTTRAPIOC_MAKEPROBE, ftp) != 0) {
dt_dprintf("fasttrap probe creation ioctl failed: %s\n",
strerror(errno));
return (dt_set_errno(dtp, errno));
}
return (1);
}
int
dt_pid_create_return_probe(struct ps_prochandle *P, dtrace_hdl_t *dtp,
fasttrap_probe_spec_t *ftp, const GElf_Sym *symp, uint64_t *stret)
{
uint32_t *text;
int i;
int srdepth = 0;
dt_dprintf("%s: unimplemented\n", __func__);
return (DT_PROC_ERR);
if ((text = malloc(symp->st_size + 4)) == NULL) {
dt_dprintf("mr sparkle: malloc() failed\n");
return (DT_PROC_ERR);
}
if (Pread(P, text, symp->st_size, symp->st_value) != symp->st_size) {
dt_dprintf("mr sparkle: Pread() failed\n");
free(text);
return (DT_PROC_ERR);
}
/*
* Leave a dummy instruction in the last slot to simplify edge
* conditions.
*/
text[symp->st_size / 4] = 0;
ftp->ftps_type = DTFTP_RETURN;
ftp->ftps_pc = symp->st_value;
ftp->ftps_size = symp->st_size;
ftp->ftps_noffs = 0;
free(text);
if (ftp->ftps_noffs > 0) {
if (ioctl(dtp->dt_ftfd, FASTTRAPIOC_MAKEPROBE, ftp) != 0) {
dt_dprintf("fasttrap probe creation ioctl failed: %s\n",
strerror(errno));
return (dt_set_errno(dtp, errno));
}
}
return (ftp->ftps_noffs);
}
/*ARGSUSED*/
int
dt_pid_create_offset_probe(struct ps_prochandle *P, dtrace_hdl_t *dtp,
fasttrap_probe_spec_t *ftp, const GElf_Sym *symp, ulong_t off)
{
if (off & 0x3)
return (DT_PROC_ALIGN);
ftp->ftps_type = DTFTP_OFFSETS;
ftp->ftps_pc = (uintptr_t)symp->st_value;
ftp->ftps_size = (size_t)symp->st_size;
ftp->ftps_noffs = 1;
ftp->ftps_offs[0] = off;
if (ioctl(dtp->dt_ftfd, FASTTRAPIOC_MAKEPROBE, ftp) != 0) {
dt_dprintf("fasttrap probe creation ioctl failed: %s\n",
strerror(errno));
return (dt_set_errno(dtp, errno));
}
return (1);
}
/*ARGSUSED*/
int
dt_pid_create_glob_offset_probes(struct ps_prochandle *P, dtrace_hdl_t *dtp,
fasttrap_probe_spec_t *ftp, const GElf_Sym *symp, const char *pattern)
{
ulong_t i;
ftp->ftps_type = DTFTP_OFFSETS;
ftp->ftps_pc = (uintptr_t)symp->st_value;
ftp->ftps_size = (size_t)symp->st_size;
ftp->ftps_noffs = 0;
/*
* If we're matching against everything, just iterate through each
* instruction in the function, otherwise look for matching offset
* names by constructing the string and comparing it against the
* pattern.
*/
if (strcmp("*", pattern) == 0) {
for (i = 0; i < symp->st_size; i += 4) {
ftp->ftps_offs[ftp->ftps_noffs++] = i;
}
} else {
char name[sizeof (i) * 2 + 1];
for (i = 0; i < symp->st_size; i += 4) {
(void) sprintf(name, "%lx", i);
if (gmatch(name, pattern))
ftp->ftps_offs[ftp->ftps_noffs++] = i;
}
}
if (ioctl(dtp->dt_ftfd, FASTTRAPIOC_MAKEPROBE, ftp) != 0) {
dt_dprintf("fasttrap probe creation ioctl failed: %s\n",
strerror(errno));
return (dt_set_errno(dtp, errno));
}
return (ftp->ftps_noffs);
}

4
cddl/contrib/opensolaris/tools/ctf/cvt/ctf.c
View File

@ -169,12 +169,12 @@ write_objects(iidesc_t *idp, ctf_buf_t *b)
{
ushort_t id = (idp ? idp->ii_dtype->t_id : 0);
ctf_buf_write(b, &id, sizeof (id));
if (target_requires_swap) {
SWAP_16(id);
}
ctf_buf_write(b, &id, sizeof (id));
debug(3, "Wrote object %s (%d)\n", (idp ? idp->ii_name : "(null)"), id);
}

3
cddl/lib/Makefile
View File

@ -27,7 +27,8 @@ _libzpool= libzpool
.endif
.if ${MACHINE_ARCH} == "amd64" || ${MACHINE_ARCH} == "i386" || \
${MACHINE_CPUARCH} == "mips" || ${MACHINE_CPUARCH} == "powerpc"
${MACHINE_CPUARCH} == "mips" || ${MACHINE_CPUARCH} == "powerpc" || \
${MACHINE_CPUARCH} == "arm"
_drti= drti
_libdtrace= libdtrace
.endif

4
cddl/lib/libdtrace/Makefile
View File

@ -81,6 +81,10 @@ CFLAGS+= -I${OPENSOLARIS_SYS_DISTDIR}/uts/sparc
CFLAGS+= -I${OPENSOLARIS_SYS_DISTDIR}/uts/mips
.PATH: ${.CURDIR}/../../../cddl/contrib/opensolaris/lib/libdtrace/mips
.PATH: ${.CURDIR}/../../../sys/cddl/dev/dtrace/mips
.elif ${MACHINE_CPUARCH} == "arm"
CFLAGS+= -I${OPENSOLARIS_SYS_DISTDIR}/uts/arm
.PATH: ${.CURDIR}/../../../cddl/contrib/opensolaris/lib/libdtrace/arm
.PATH: ${.CURDIR}/../../../sys/cddl/dev/dtrace/arm
.elif ${MACHINE_CPUARCH} == "powerpc"
CFLAGS+= -I${OPENSOLARIS_SYS_DISTDIR}/uts/powerpc
.PATH: ${.CURDIR}/../../../cddl/contrib/opensolaris/lib/libdtrace/powerpc

6
cddl/usr.sbin/Makefile
View File

@ -30,6 +30,12 @@ _plockstat= plockstat
.endif
.endif
.if ${MACHINE_CPUARCH} == "arm"
_dtrace= dtrace
_dtruss= dtruss
_lockstat= lockstat
.endif
.if ${MACHINE_CPUARCH} == "mips"
_dtrace= dtrace
.endif

6
lib/Makefile
View File

@ -284,6 +284,12 @@ _libsmb= libsmb
_libsmb= libsmb
.endif
.if ${MACHINE_CPUARCH} == "arm"
_libsmb= libsmb
_libproc= libproc
_librtld_db= librtld_db
.endif
.if ${MK_OPENSSL} != "no"
_libmp= libmp
.endif

3
lib/libproc/proc_bkpt.c
View File

@ -51,6 +51,9 @@ __FBSDID("$FreeBSD$");
#elif defined(__powerpc__)
#define BREAKPOINT_INSTR 0x7fe00008 /* trap */
#define BREAKPOINT_INSTR_SZ 4
#elif defined(__arm__)
#define BREAKPOINT_INSTR 0xe7ffffff /* bkpt */
#define BREAKPOINT_INSTR_SZ 4
#else
#error "Add support for your architecture"
#endif

8
lib/libproc/proc_regs.c
View File

@ -56,6 +56,8 @@ proc_regget(struct proc_handle *phdl, proc_reg_t reg, unsigned long *regvalue)
case REG_PC:
#if defined(__amd64__)
*regvalue = regs.r_rip;
#elif defined(__arm__)
*regvalue = regs.r_pc;
#elif defined(__i386__)
*regvalue = regs.r_eip;
#elif defined(__mips__)
@ -67,6 +69,8 @@ proc_regget(struct proc_handle *phdl, proc_reg_t reg, unsigned long *regvalue)
case REG_SP:
#if defined(__amd64__)
*regvalue = regs.r_rsp;
#elif defined(__arm__)
*regvalue = regs.r_sp;
#elif defined(__i386__)
*regvalue = regs.r_esp;
#elif defined(__mips__)
@ -99,6 +103,8 @@ proc_regset(struct proc_handle *phdl, proc_reg_t reg, unsigned long regvalue)
case REG_PC:
#if defined(__amd64__)
regs.r_rip = regvalue;
#elif defined(__arm__)
regs.r_pc = regvalue;
#elif defined(__i386__)
regs.r_eip = regvalue;
#elif defined(__mips__)
@ -110,6 +116,8 @@ proc_regset(struct proc_handle *phdl, proc_reg_t reg, unsigned long regvalue)
case REG_SP:
#if defined(__amd64__)
regs.r_rsp = regvalue;
#elif defined(__arm__)
regs.r_sp = regvalue;
#elif defined(__i386__)
regs.r_esp = regvalue;
#elif defined(__mips__)

15
sys/arm/arm/exception.S
View File

@ -48,11 +48,26 @@
#include "assym.s"
#include "opt_kdtrace.h"
#include <machine/asm.h>
#include <machine/armreg.h>
#include <machine/asmacros.h>
__FBSDID("$FreeBSD$");
#ifdef KDTRACE_HOOKS
.bss
.align 4
.global _C_LABEL(dtrace_invop_jump_addr)
_C_LABEL(dtrace_invop_jump_addr):
.word 0
.word 0
.global _C_LABEL(dtrace_invop_calltrap_addr)
_C_LABEL(dtrace_invop_calltrap_addr):
.word 0
.word 0
#endif
.text
.align 2

2
sys/arm/arm/identcpu.c
View File

@ -387,7 +387,7 @@ identify_arm_cpu(void)
u_int8_t type, linesize;
int i;
cpuid = cpu_id();
cpuid = cpu_ident();
if (cpuid == 0) {
printf("Processor failed probe - no CPU ID\n");

10
sys/arm/arm/trap.c
View File

@ -78,6 +78,9 @@
* Created : 28/11/94
*/
#ifdef KDTRACE_HOOKS
#include <sys/dtrace_bsd.h>
#endif
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
@ -427,6 +430,13 @@ dab_fatal(struct trapframe *tf, u_int fsr, u_int far, struct thread *td,
{
const char *mode;
#ifdef KDTRACE_HOOKS
if (!TRAP_USERMODE(tf)) {
if (dtrace_trap_func != NULL && (*dtrace_trap_func)(tf, far & FAULT_TYPE_MASK))
return (0);
}
#endif
mode = TRAP_USERMODE(tf) ? "user" : "kernel";
disable_interrupts(PSR_I|PSR_F);

6
sys/arm/conf/BEAGLEBONE
View File

@ -27,6 +27,12 @@ include "../ti/am335x/std.am335x"
makeoptions WITHOUT_MODULES="ahc"
# DTrace support
options KDTRACE_HOOKS # Kernel DTrace hooks
options DDB_CTF # all architectures - kernel ELF linker loads CTF data
makeoptions WITH_CTF=1
makeoptions MODULES_OVERRIDE="opensolaris dtrace dtrace/lockstat dtrace/profile dtrace/fbt"
options HZ=100
options SCHED_4BSD # 4BSD scheduler
options PREEMPTION # Enable kernel thread preemption

2
sys/arm/include/cpufunc.h
View File

@ -175,7 +175,7 @@ struct cpu_functions {
extern struct cpu_functions cpufuncs;
extern u_int cputype;
#define cpu_id() cpufuncs.cf_id()
#define cpu_ident() cpufuncs.cf_id()
#define cpu_cpwait() cpufuncs.cf_cpwait()
#define cpu_control(c, e) cpufuncs.cf_control(c, e)

30
sys/cddl/contrib/opensolaris/uts/arm/dtrace/fasttrap_isa.c Normal file
View File

@ -0,0 +1,30 @@
/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (the "License").
* You may not use this file except in compliance with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 2007 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
/*
* XXX: Placeholder for ARM fasttrap code
*/

94
sys/cddl/contrib/opensolaris/uts/arm/sys/fasttrap_isa.h Normal file
View File

@ -0,0 +1,94 @@
/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License, Version 1.0 only
* (the "License"). You may not use this file except in compliance
* with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 2005 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#ifndef _FASTTRAP_ISA_H
#define _FASTTRAP_ISA_H
#pragma ident "%Z%%M% %I% %E% SMI"
#include <sys/types.h>
#ifdef __cplusplus
extern "C" {
#endif
/*
* This is our reserved trap instruction: ta 0x38
*/
#define FASTTRAP_INSTR 0x91d02038
#define FASTTRAP_SUNWDTRACE_SIZE 128
typedef uint32_t fasttrap_instr_t;
typedef struct fasttrap_machtp {
fasttrap_instr_t ftmt_instr; /* original instruction */
uintptr_t ftmt_dest; /* destination of DCTI */
uint8_t ftmt_type; /* emulation type */
uint8_t ftmt_flags; /* emulation flags */
uint8_t ftmt_cc; /* which cc to look at */
uint8_t ftmt_code; /* branch condition */
} fasttrap_machtp_t;
#define ftt_instr ftt_mtp.ftmt_instr
#define ftt_dest ftt_mtp.ftmt_dest
#define ftt_type ftt_mtp.ftmt_type
#define ftt_flags ftt_mtp.ftmt_flags
#define ftt_cc ftt_mtp.ftmt_cc
#define ftt_code ftt_mtp.ftmt_code
#define FASTTRAP_T_COMMON 0x00 /* common case -- no emulation */
#define FASTTRAP_T_CCR 0x01 /* integer condition code branch */
#define FASTTRAP_T_FCC 0x02 /* floating-point branch */
#define FASTTRAP_T_REG 0x03 /* register predicated branch */
#define FASTTRAP_T_ALWAYS 0x04 /* branch always */
#define FASTTRAP_T_CALL 0x05 /* call instruction */
#define FASTTRAP_T_JMPL 0x06 /* jmpl instruction */
#define FASTTRAP_T_RDPC 0x07 /* rdpc instruction */
#define FASTTRAP_T_RETURN 0x08 /* return instruction */
/*
* For performance rather than correctness.
*/
#define FASTTRAP_T_SAVE 0x10 /* save instruction (func entry only) */
#define FASTTRAP_T_RESTORE 0x11 /* restore instruction */
#define FASTTRAP_T_OR 0x12 /* mov instruction */
#define FASTTRAP_T_SETHI 0x13 /* sethi instruction (includes nop) */
#define FASTTRAP_F_ANNUL 0x01 /* branch is annulled */
#define FASTTRAP_F_RETMAYBE 0x02 /* not definitely a return site */
#define FASTTRAP_AFRAMES 3
#define FASTTRAP_RETURN_AFRAMES 4
#define FASTTRAP_ENTRY_AFRAMES 3
#define FASTTRAP_OFFSET_AFRAMES 3
#ifdef __cplusplus
}
#endif
#endif /* _FASTTRAP_ISA_H */

2
sys/cddl/contrib/opensolaris/uts/common/dtrace/dtrace.c
View File

@ -11880,7 +11880,7 @@ dtrace_buffer_alloc(dtrace_buffer_t *bufs, size_t size, int flags,
int i;
*factor = 1;
#if defined(__amd64__) || defined(__mips__) || defined(__powerpc__)
#if defined(__amd64__) || defined(__arm__) || defined(__mips__) || defined(__powerpc__)
/*
* FreeBSD isn't good at limiting the amount of memory we
* ask to malloc, so let's place a limit here before trying

7
sys/cddl/contrib/opensolaris/uts/common/sys/dtrace.h
View File

@ -2434,6 +2434,13 @@ extern void dtrace_helpers_destroy(proc_t *);
#define DTRACE_INVOP_MFLR_R0 5
#define DTRACE_INVOP_NOP 6
#elif defined(__arm__)
#define DTRACE_INVOP_PUSHM 1
#define DTRACE_INVOP_POPM 2
#define DTRACE_INVOP_B 3
#endif
#ifdef __cplusplus

197
sys/cddl/dev/dtrace/arm/dtrace_asm.S Normal file
View File

@ -0,0 +1,197 @@
/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License, Version 1.0 only
* (the "License"). You may not use this file except in compliance
* with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*
* $FreeBSD$
*/
/*
* Copyright 2004 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#define _ASM
#define _LOCORE
#define LOCORE
#include <sys/cpuvar_defs.h>
#include <sys/dtrace.h>
#include <machine/armreg.h>
#include <machine/asm.h>
#include "assym.s"
/*
void dtrace_membar_producer(void)
*/
ENTRY(dtrace_membar_producer)
RET
END(dtrace_membar_producer)
/*
void dtrace_membar_consumer(void)
*/
ENTRY(dtrace_membar_consumer)
RET
END(dtrace_membar_consumer)
/*
dtrace_icookie_t dtrace_interrupt_disable(void)
*/
ENTRY(dtrace_interrupt_disable)
mrs r0, cpsr
mov r1, r0
orr r1, r1, #(PSR_I | PSR_F)
msr cpsr_c, r1
RET
END(dtrace_interrupt_disable)
/*
void dtrace_interrupt_enable(dtrace_icookie_t cookie)
*/
ENTRY(dtrace_interrupt_enable)
and r0, r0, #(PSR_I | PSR_F)
mrs r1, cpsr
bic r1, r1, #(PSR_I | PSR_F)
orr r1, r1, r0
msr cpsr_c, r1
RET
END(dtrace_interrupt_enable)
/*
uint8_t
dtrace_fuword8_nocheck(void *addr)
*/
ENTRY(dtrace_fuword8_nocheck)
ldrb r3, [r0]
mov r0, r3
RET
END(dtrace_fuword8_nocheck)
/*
uint16_t
dtrace_fuword16_nocheck(void *addr)
*/
ENTRY(dtrace_fuword16_nocheck)
ldrh r3, [r0]
mov r0, r3
RET
END(dtrace_fuword16_nocheck)
/*
uint32_t
dtrace_fuword32_nocheck(void *addr)
*/
ENTRY(dtrace_fuword32_nocheck)
ldr r3, [r0]
mov r0, r3
RET
END(dtrace_fuword32_nocheck)
/*
uint64_t
dtrace_fuword64_nocheck(void *addr)
*/
ENTRY(dtrace_fuword64_nocheck)
ldm r0, {r2, r3}
mov r0, r2
mov r1, r3
#if defined(__BIG_ENDIAN__)
/* big endian */
mov r0, r3
mov r1, r2
#else
/* little endian */
mov r0, r2
mov r1, r3
#endif
RET
END(dtrace_fuword64_nocheck)
/*
void
dtrace_copy(uintptr_t uaddr, uintptr_t kaddr, size_t size)
*/
ENTRY(dtrace_copy)
stmfd sp!, {r4-r5} /* stack is 8 byte aligned */
teq r2, #0x00000000
mov r5, #0x00000000
beq 2f
1: ldrb r4, [r0], #0x0001
add r5, r5, #0x00000001
strb r4, [r1], #0x0001
teqne r5, r2
bne 1b
2: ldmfd sp!, {r4-r5} /* stack is 8 byte aligned */
RET
END(dtrace_copy)
/*
void
dtrace_copystr(uintptr_t uaddr, uintptr_t kaddr, size_t size,
volatile uint16_t *flags)
XXX: Check for flags?
*/
ENTRY(dtrace_copystr)
stmfd sp!, {r4-r5} /* stack is 8 byte aligned */
teq r2, #0x00000000
mov r5, #0x00000000
beq 2f
1: ldrb r4, [r0], #0x0001
add r5, r5, #0x00000001
teq r4, #0x00000000
strb r4, [r1], #0x0001
teqne r5, r2
bne 1b
2: ldmfd sp!, {r4-r5} /* stack is 8 byte aligned */
RET
END(dtrace_copystr)
/*
void
vpanic(const char *format, va_list alist)
*/
ENTRY(vpanic) /* Initial stack layout: */
vpanic_common:
RET
END(vpanic)
/*
void
dtrace_vpanic(const char *format, va_list alist)
*/
ENTRY(dtrace_vpanic) /* Initial stack layout: */
b vpanic
RET
END(dtrace_vpanic) /* Initial stack layout: */
/*
uintptr_t
dtrace_caller(int aframes)
*/
ENTRY(dtrace_caller)
mov r0, #-1
RET
END(dtrace_caller)

356
sys/cddl/dev/dtrace/arm/dtrace_isa.c Normal file
View File

@ -0,0 +1,356 @@
/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License, Version 1.0 only
* (the "License"). You may not use this file except in compliance
* with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*
* $FreeBSD$
*/
/*
* Copyright 2005 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#include <sys/cdefs.h>
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/stack.h>
#include <sys/pcpu.h>
#include <machine/frame.h>
#include <machine/md_var.h>
#include <machine/reg.h>
#include <vm/vm.h>
#include <vm/vm_param.h>
#include <vm/pmap.h>
#include <machine/atomic.h>
#include <machine/db_machdep.h>
#include <machine/md_var.h>
#include <machine/vmparam.h>
#include <machine/stack.h>
#include <ddb/db_sym.h>
#include <ddb/ddb.h>
#include <sys/kdb.h>
#include "regset.h"
/*
* Wee need some reasonable default to prevent backtrace code
* from wandering too far
*/
#define MAX_FUNCTION_SIZE 0x10000
#define MAX_PROLOGUE_SIZE 0x100
uint8_t dtrace_fuword8_nocheck(void *);
uint16_t dtrace_fuword16_nocheck(void *);
uint32_t dtrace_fuword32_nocheck(void *);
uint64_t dtrace_fuword64_nocheck(void *);
void
dtrace_getpcstack(pc_t *pcstack, int pcstack_limit, int aframes,
uint32_t *intrpc)
{
u_int32_t *frame, *lastframe;
int scp_offset;
int depth = 0;
pc_t caller = (pc_t) solaris_cpu[curcpu].cpu_dtrace_caller;
if (intrpc != 0)
pcstack[depth++] = (pc_t) intrpc;
aframes++;
frame = (u_int32_t *)__builtin_frame_address(0);;
lastframe = NULL;
scp_offset = -(get_pc_str_offset() >> 2);
while ((frame != NULL) && (depth < pcstack_limit)) {
db_addr_t scp;
#if 0
u_int32_t savecode;
int r;
u_int32_t *rp;
#endif
/*
* In theory, the SCP isn't guaranteed to be in the function
* that generated the stack frame. We hope for the best.
*/
scp = frame[FR_SCP];
if (aframes > 0) {
aframes--;
if ((aframes == 0) && (caller != 0)) {
pcstack[depth++] = caller;
}
}
else {
pcstack[depth++] = scp;
}
#if 0
savecode = ((u_int32_t *)scp)[scp_offset];
if ((savecode & 0x0e100000) == 0x08000000) {
/* Looks like an STM */
rp = frame - 4;
for (r = 10; r >= 0; r--) {
if (savecode & (1 << r)) {
/* register r == *rp-- */
}
}
}
#endif
/*
* Switch to next frame up
*/
if (frame[FR_RFP] == 0)
break; /* Top of stack */
lastframe = frame;
frame = (u_int32_t *)(frame[FR_RFP]);
if (INKERNEL((int)frame)) {
/* staying in kernel */
if (frame <= lastframe) {
/* bad frame pointer */
break;
}
}
else
break;
}
for (; depth < pcstack_limit; depth++) {
pcstack[depth] = 0;
}
}
void
dtrace_getupcstack(uint64_t *pcstack, int pcstack_limit)
{
printf("IMPLEMENT ME: %s\n", __func__);
}
int
dtrace_getustackdepth(void)
{
printf("IMPLEMENT ME: %s\n", __func__);
return (0);
}
void
dtrace_getufpstack(uint64_t *pcstack, uint64_t *fpstack, int pcstack_limit)
{
printf("IMPLEMENT ME: %s\n", __func__);
}
/*ARGSUSED*/
uint64_t
dtrace_getarg(int arg, int aframes)
{
/* struct arm_frame *fp = (struct arm_frame *)dtrace_getfp();*/
return (0);
}
int
dtrace_getstackdepth(int aframes)
{
u_int32_t *frame, *lastframe;
int scp_offset;
int depth = 1;
frame = (u_int32_t *)__builtin_frame_address(0);;
lastframe = NULL;
scp_offset = -(get_pc_str_offset() >> 2);
while (frame != NULL) {
db_addr_t scp;
#if 0
u_int32_t savecode;
int r;
u_int32_t *rp;
#endif
/*
* In theory, the SCP isn't guaranteed to be in the function
* that generated the stack frame. We hope for the best.
*/
scp = frame[FR_SCP];
depth++;
/*
* Switch to next frame up
*/
if (frame[FR_RFP] == 0)
break; /* Top of stack */
lastframe = frame;
frame = (u_int32_t *)(frame[FR_RFP]);
if (INKERNEL((int)frame)) {
/* staying in kernel */
if (frame <= lastframe) {
/* bad frame pointer */
break;
}
}
else
break;
}
if (depth < aframes)
return 0;
else
return depth - aframes;
}
ulong_t
dtrace_getreg(struct trapframe *rp, uint_t reg)
{
printf("IMPLEMENT ME: %s\n", __func__);
return (0);
}
static int
dtrace_copycheck(uintptr_t uaddr, uintptr_t kaddr, size_t size)
{
if (uaddr + size > VM_MAXUSER_ADDRESS || uaddr + size < uaddr) {
DTRACE_CPUFLAG_SET(CPU_DTRACE_BADADDR);
cpu_core[curcpu].cpuc_dtrace_illval = uaddr;
return (0);
}
return (1);
}
void
dtrace_copyin(uintptr_t uaddr, uintptr_t kaddr, size_t size,
volatile uint16_t *flags)
{
if (dtrace_copycheck(uaddr, kaddr, size))
dtrace_copy(uaddr, kaddr, size);
}
void
dtrace_copyout(uintptr_t kaddr, uintptr_t uaddr, size_t size,
volatile uint16_t *flags)
{
if (dtrace_copycheck(uaddr, kaddr, size))
dtrace_copy(kaddr, uaddr, size);
}
void
dtrace_copyinstr(uintptr_t uaddr, uintptr_t kaddr, size_t size,
volatile uint16_t *flags)
{
if (dtrace_copycheck(uaddr, kaddr, size))
dtrace_copystr(uaddr, kaddr, size, flags);
}
void
dtrace_copyoutstr(uintptr_t kaddr, uintptr_t uaddr, size_t size,
volatile uint16_t *flags)
{
if (dtrace_copycheck(uaddr, kaddr, size))
dtrace_copystr(kaddr, uaddr, size, flags);
}
uint8_t
dtrace_fuword8(void *uaddr)
{
if ((uintptr_t)uaddr > VM_MAXUSER_ADDRESS) {
DTRACE_CPUFLAG_SET(CPU_DTRACE_BADADDR);
cpu_core[curcpu].cpuc_dtrace_illval = (uintptr_t)uaddr;
return (0);
}
return (dtrace_fuword8_nocheck(uaddr));
}
uint16_t
dtrace_fuword16(void *uaddr)
{
if ((uintptr_t)uaddr > VM_MAXUSER_ADDRESS) {
DTRACE_CPUFLAG_SET(CPU_DTRACE_BADADDR);
cpu_core[curcpu].cpuc_dtrace_illval = (uintptr_t)uaddr;
return (0);
}
return (dtrace_fuword16_nocheck(uaddr));
}
uint32_t
dtrace_fuword32(void *uaddr)
{
if ((uintptr_t)uaddr > VM_MAXUSER_ADDRESS) {
DTRACE_CPUFLAG_SET(CPU_DTRACE_BADADDR);
cpu_core[curcpu].cpuc_dtrace_illval = (uintptr_t)uaddr;
return (0);
}
return (dtrace_fuword32_nocheck(uaddr));
}
uint64_t
dtrace_fuword64(void *uaddr)
{
if ((uintptr_t)uaddr > VM_MAXUSER_ADDRESS) {
DTRACE_CPUFLAG_SET(CPU_DTRACE_BADADDR);
cpu_core[curcpu].cpuc_dtrace_illval = (uintptr_t)uaddr;
return (0);
}
return (dtrace_fuword64_nocheck(uaddr));
}
#define __with_interrupts_disabled(expr) \
do { \
u_int cpsr_save, tmp; \
\
__asm __volatile( \
"mrs %0, cpsr;" \
"orr %1, %0, %2;" \
"msr cpsr_fsxc, %1;" \
: "=r" (cpsr_save), "=r" (tmp) \
: "I" (PSR_I | PSR_F) \
: "cc" ); \
(expr); \
__asm __volatile( \
"msr cpsr_fsxc, %0" \
: /* no output */ \
: "r" (cpsr_save) \
: "cc" ); \
} while(0)
uint32_t dtrace_cas32(uint32_t *target, uint32_t cmp, uint32_t new)
{
return atomic_cmpset_32((uint32_t*)target, (uint32_t)cmp, (uint32_t)new);
}
void * dtrace_casptr(volatile void *target, volatile void *cmp, volatile void *new)
{
return (void*)dtrace_cas32((uint32_t*)target, (uint32_t)cmp, (uint32_t)new);
}

261
sys/cddl/dev/dtrace/arm/dtrace_subr.c Normal file
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@ -0,0 +1,261 @@
/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License, Version 1.0 only
* (the "License"). You may not use this file except in compliance
* with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*
* $FreeBSD$
*
*/
/*
* Copyright 2005 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/types.h>
#include <sys/kernel.h>
#include <sys/malloc.h>
#include <sys/kmem.h>
#include <sys/smp.h>
#include <sys/dtrace_impl.h>
#include <sys/dtrace_bsd.h>
#include <machine/armreg.h>
#include <machine/clock.h>
#include <machine/frame.h>
#include <machine/trap.h>
#include <vm/pmap.h>
#define DELAYBRANCH(x) ((int)(x) < 0)
extern uintptr_t dtrace_in_probe_addr;
extern int dtrace_in_probe;
extern dtrace_id_t dtrace_probeid_error;
extern int (*dtrace_invop_jump_addr)(struct trapframe *);
int dtrace_invop(uintptr_t, uintptr_t *, uintptr_t);
void dtrace_invop_init(void);
void dtrace_invop_uninit(void);
typedef struct dtrace_invop_hdlr {
int (*dtih_func)(uintptr_t, uintptr_t *, uintptr_t);
struct dtrace_invop_hdlr *dtih_next;
} dtrace_invop_hdlr_t;
dtrace_invop_hdlr_t *dtrace_invop_hdlr;
int
dtrace_invop(uintptr_t addr, uintptr_t *stack, 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)
return (rval);
return (0);
}
void
dtrace_invop_add(int (*func)(uintptr_t, uintptr_t *, uintptr_t))
{
dtrace_invop_hdlr_t *hdlr;
hdlr = kmem_alloc(sizeof (dtrace_invop_hdlr_t), KM_SLEEP);
hdlr->dtih_func = func;
hdlr->dtih_next = dtrace_invop_hdlr;
dtrace_invop_hdlr = hdlr;
}
void
dtrace_invop_remove(int (*func)(uintptr_t, uintptr_t *, uintptr_t))
{
dtrace_invop_hdlr_t *hdlr = dtrace_invop_hdlr, *prev = NULL;
for (;;) {
if (hdlr == NULL)
panic("attempt to remove non-existent invop handler");
if (hdlr->dtih_func == func)
break;
prev = hdlr;
hdlr = hdlr->dtih_next;
}
if (prev == NULL) {
ASSERT(dtrace_invop_hdlr == hdlr);
dtrace_invop_hdlr = hdlr->dtih_next;
} else {
ASSERT(dtrace_invop_hdlr != hdlr);
prev->dtih_next = hdlr->dtih_next;
}
kmem_free(hdlr, 0);
}
/*ARGSUSED*/
void
dtrace_toxic_ranges(void (*func)(uintptr_t base, uintptr_t limit))
{
printf("IMPLEMENT ME: dtrace_toxic_ranges\n");
}
void
dtrace_xcall(processorid_t cpu, dtrace_xcall_t func, void *arg)
{
cpuset_t cpus;
if (cpu == DTRACE_CPUALL)
cpus = all_cpus;
else
CPU_SETOF(cpu, &cpus);
smp_rendezvous_cpus(cpus, smp_no_rendevous_barrier, func,
smp_no_rendevous_barrier, arg);
}
static void
dtrace_sync_func(void)
{
}
void
dtrace_sync(void)
{
dtrace_xcall(DTRACE_CPUALL, (dtrace_xcall_t)dtrace_sync_func, NULL);
}
/*
* DTrace needs a high resolution time function which can
* be called from a probe context and guaranteed not to have
* instrumented with probes itself.
*
* Returns nanoseconds since boot.
*/
uint64_t
dtrace_gethrtime()
{
struct timespec curtime;
nanouptime(&curtime);
return (curtime.tv_sec * 1000000000UL + curtime.tv_nsec);
}
uint64_t
dtrace_gethrestime(void)
{
struct timespec curtime;
getnanotime(&curtime);
return (curtime.tv_sec * 1000000000UL + curtime.tv_nsec);
}
/* Function to handle DTrace traps during probes. See amd64/amd64/trap.c */
int
dtrace_trap(struct trapframe *frame, u_int type)
{
/*
* A trap can occur while DTrace executes a probe. Before
* executing the probe, DTrace blocks re-scheduling and sets
* a flag in it's per-cpu flags to indicate that it doesn't
* want to fault. On returning from the probe, the no-fault
* flag is cleared and finally re-scheduling is enabled.
*
* Check if DTrace has enabled 'no-fault' mode:
*
*/
if ((cpu_core[curcpu].cpuc_dtrace_flags & CPU_DTRACE_NOFAULT) != 0) {
/*
* There are only a couple of trap types that are expected.
* All the rest will be handled in the usual way.
*/
switch (type) {
/* Page fault. */
case FAULT_ALIGN:
/* Flag a bad address. */
cpu_core[curcpu].cpuc_dtrace_flags |= CPU_DTRACE_BADADDR;
cpu_core[curcpu].cpuc_dtrace_illval = 0;
/*
* Offset the instruction pointer to the instruction
* following the one causing the fault.
*/
frame->tf_pc += sizeof(int);
return (1);
default:
/* Handle all other traps in the usual way. */
break;
}
}
/* Handle the trap in the usual way. */
return (0);
}
void
dtrace_probe_error(dtrace_state_t *state, dtrace_epid_t epid, int which,
int fault, int fltoffs, uintptr_t illval)
{
dtrace_probe(dtrace_probeid_error, (uint64_t)(uintptr_t)state,
(uintptr_t)epid,
(uintptr_t)which, (uintptr_t)fault, (uintptr_t)fltoffs);
}
static int
dtrace_invop_start(struct trapframe *frame)
{
printf("IMPLEMENT ME: %s\n", __func__);
switch (dtrace_invop(frame->tf_pc, (uintptr_t *)frame, frame->tf_pc)) {
case DTRACE_INVOP_PUSHM:
// TODO:
break;
case DTRACE_INVOP_POPM:
// TODO:
break;
case DTRACE_INVOP_B:
// TODO
break;
default:
return (-1);
break;
}
return (0);
}
void dtrace_invop_init(void)
{
dtrace_invop_jump_addr = dtrace_invop_start;
}
void dtrace_invop_uninit(void)
{
dtrace_invop_jump_addr = 0;
}

57
sys/cddl/dev/dtrace/arm/regset.h Normal file
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@ -0,0 +1,57 @@
/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License, Version 1.0 only
* (the "License"). You may not use this file except in compliance
* with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*
* $FreeBSD$
*/
/*
* Copyright 2004 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
/* Copyright (c) 1990, 1991 UNIX System Laboratories, Inc. */
/* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
/* All Rights Reserved */
#ifndef _REGSET_H
#define _REGSET_H
/*
* #pragma ident "@(#)regset.h 1.11 05/06/08 SMI"
*/
#ifdef __cplusplus
extern "C" {
#endif
#if 0
#define REG_LINK R14
#define REG_SP R12
#define REG_PS R0
#define REG_R0 R0
#define REG_R1 R1
#endif
#ifdef __cplusplus
}
#endif
#endif /* _REGSET_H */

1303
sys/cddl/dev/fbt/arm/fbt_isa.c Normal file
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File diff suppressed because it is too large Load Diff

30
sys/cddl/dev/fbt/arm/fbt_isa.h Normal file
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@ -0,0 +1,30 @@
/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (the "License").
* You may not use this file except in compliance with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*
* $FreeBSD$
*
*/
#ifndef _FBT_ISA_H_
#define _FBT_ISA_H_
typedef uint32_t fbt_patchval_t;
#endif

3
sys/cddl/dev/lockstat/lockstat.c
View File

@ -44,7 +44,8 @@
#include <sys/lockstat.h>
#if defined(__i386__) || defined(__amd64__) || \
defined(__mips__) || defined(__powerpc__)
defined(__mips__) || defined(__powerpc__) || \
defined(__arm__)
#define LOCKSTAT_AFRAMES 1
#else
#error "architecture not supported"

10
sys/cddl/dev/profile/profile.c
View File

@ -128,6 +128,16 @@
struct profile_probe_percpu;
#ifdef __mips
/* bogus */
#define PROF_ARTIFICIAL_FRAMES 3
#endif
#ifdef __arm__
/* bogus */
#define PROF_ARTIFICIAL_FRAMES 3
#endif
typedef struct profile_probe {
char prof_name[PROF_NAMELEN];
dtrace_id_t prof_id;

4
sys/modules/dtrace/Makefile
View File

@ -22,5 +22,7 @@ SUBDIR+= fbt fasttrap
.if ${MACHINE_CPUARCH} == "amd64" || ${MACHINE_ARCH} == "powerpc64"
SUBDIR+= systrace_freebsd32
.endif
.if ${MACHINE_CPUARCH} == "arm"
SUBDIR+= fbt
.endif
.include <bsd.subdir.mk>

5
sys/modules/dtrace/dtrace/Makefile
View File

@ -53,6 +53,11 @@ EXPORT_SYMS= dtrace_register \
dtrace_asm.o: assym.s
.if ${MACHINE_CPUARCH} == "arm"
assym.o: assym.s
${AS} -meabi=5 -o assym.o assym.s
.endif
.include <bsd.kmod.mk>
CFLAGS+= -include ${SYSDIR}/cddl/compat/opensolaris/sys/debug_compat.h