Author: br Date: Thu Jun 11 12:47:13 2015 New Revision: 284257 URL: https://svnweb.freebsd.org/changeset/base/284257
Log: Split out db_unwind_frame() so it can be used by DTrace. Sponsored by: ARM Ltd. Differential Revision: https://reviews.freebsd.org/D2741 Added: head/sys/arm64/arm64/unwind.c (contents, props changed) Modified: head/sys/arm64/arm64/db_trace.c head/sys/arm64/include/stack.h head/sys/conf/files.arm64 Modified: head/sys/arm64/arm64/db_trace.c ============================================================================== --- head/sys/arm64/arm64/db_trace.c Thu Jun 11 04:41:54 2015 (r284256) +++ head/sys/arm64/arm64/db_trace.c Thu Jun 11 12:47:13 2015 (r284257) @@ -38,12 +38,7 @@ __FBSDID("$FreeBSD$"); #include <machine/armreg.h> #include <machine/debug_monitor.h> - -struct unwind_state { - uint64_t fp; - uint64_t sp; - uint64_t pc; -}; +#include <machine/stack.h> void db_md_list_watchpoints() @@ -67,22 +62,6 @@ db_md_set_watchpoint(db_expr_t addr, db_ HW_BREAKPOINT_RW)); } -static int -db_unwind_frame(struct unwind_state *frame) -{ - uint64_t fp = frame->fp; - - if (fp == 0) - return -1; - - frame->sp = fp + 0x10; - /* FP to previous frame (X29) */ - frame->fp = *(uint64_t *)(fp); - /* LR (X30) */ - frame->pc = *(uint64_t *)(fp + 8) - 4; - return (0); -} - static void db_stack_trace_cmd(struct unwind_state *frame) { @@ -95,7 +74,7 @@ db_stack_trace_cmd(struct unwind_state * uint64_t pc = frame->pc; int ret; - ret = db_unwind_frame(frame); + ret = unwind_frame(frame); if (ret < 0) break; Added: head/sys/arm64/arm64/unwind.c ============================================================================== --- /dev/null 00:00:00 1970 (empty, because file is newly added) +++ head/sys/arm64/arm64/unwind.c Thu Jun 11 12:47:13 2015 (r284257) @@ -0,0 +1,52 @@ +/*- + * Copyright (c) 2015 The FreeBSD Foundation + * All rights reserved. + * + * This software was developed by Semihalf under + * the sponsorship of the FreeBSD Foundation. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); +#include <sys/param.h> + +#include <machine/stack.h> + +int +unwind_frame(struct unwind_state *frame) +{ + uint64_t fp; + + fp = frame->fp; + if (fp == 0) + return (-1); + + frame->sp = fp + 0x10; + /* FP to previous frame (X29) */ + frame->fp = *(uint64_t *)(fp); + /* LR (X30) */ + frame->pc = *(uint64_t *)(fp + 8) - 4; + + return (0); +} Modified: head/sys/arm64/include/stack.h ============================================================================== --- head/sys/arm64/include/stack.h Thu Jun 11 04:41:54 2015 (r284256) +++ head/sys/arm64/include/stack.h Thu Jun 11 12:47:13 2015 (r284257) @@ -32,4 +32,12 @@ #define INKERNEL(va) \ ((va) >= VM_MIN_KERNEL_ADDRESS && (va) <= VM_MAX_KERNEL_ADDRESS) +struct unwind_state { + uint64_t fp; + uint64_t sp; + uint64_t pc; +}; + +int unwind_frame(struct unwind_state *); + #endif /* !_MACHINE_STACK_H_ */ Modified: head/sys/conf/files.arm64 ============================================================================== --- head/sys/conf/files.arm64 Thu Jun 11 04:41:54 2015 (r284256) +++ head/sys/conf/files.arm64 Thu Jun 11 12:47:13 2015 (r284257) @@ -2,6 +2,7 @@ arm/arm/devmap.c standard arm/arm/generic_timer.c standard arm/arm/pmu.c standard +arm64/arm64/unwind.c optional ddb | kdtrace_hooks arm64/arm64/autoconf.c standard arm64/arm64/bcopy.c standard arm64/arm64/bus_machdep.c standard _______________________________________________ svn-src-all@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/svn-src-all To unsubscribe, send any mail to "svn-src-all-unsubscr...@freebsd.org"
