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Add the arm64 parts of libthread_db.

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Differential Revision:	https://reviews.freebsd.org/D2184
Reviewed by:	imp
Sponsored by:	The FreeBSD Foundation
This commit is contained in:
Andrew Turner 2015-04-01 08:37:50 +00:00
parent 7572a8c8f1
commit f03b8244b4
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=280952
1 changed files with 96 additions and 0 deletions
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96
lib/libthread_db/arch/aarch64/libpthread_md.c Normal file
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/*-
* Copyright (c) 2014-2015 The FreeBSD Foundation
* All rights reserved.
*
* This software was developed by Andrew Turner under
* sponsorship from 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/types.h>
#include <string.h>
#include <thread_db.h>
#include "libpthread_db.h"
void abort(void);
void
pt_reg_to_ucontext(const struct reg *r, ucontext_t *uc)
{
mcontext_t *mc = &uc->uc_mcontext;
memcpy(mc->mc_gpregs.gp_x, r->x, sizeof(mc->mc_gpregs.gp_x));
mc->mc_gpregs.gp_sp = r->sp;
mc->mc_gpregs.gp_lr = r->lr;
mc->mc_gpregs.gp_elr = r->elr;
mc->mc_gpregs.gp_spsr = r->spsr;
}
void
pt_ucontext_to_reg(const ucontext_t *uc, struct reg *r)
{
const mcontext_t *mc = &uc->uc_mcontext;
memcpy(r->x, mc->mc_gpregs.gp_x, sizeof(mc->mc_gpregs.gp_x));
r->sp = mc->mc_gpregs.gp_sp;
r->lr = mc->mc_gpregs.gp_lr;
r->elr = mc->mc_gpregs.gp_elr;
r->spsr = mc->mc_gpregs.gp_spsr;
}
void
pt_fpreg_to_ucontext(const struct fpreg *r, ucontext_t *uc)
{
mcontext_t *mc = &uc->uc_mcontext;
memcpy(&mc->mc_fpregs, r, sizeof(*r));
mc->mc_flags |= _MC_FP_VALID;
}
void
pt_ucontext_to_fpreg(const ucontext_t *uc, struct fpreg *r)
{
const mcontext_t *mc = &uc->uc_mcontext;
if (mc->mc_flags & _MC_FP_VALID)
memcpy(r, &mc->mc_fpregs, sizeof(*r));
else
memset(r, 0, sizeof(*r));
}
void
pt_md_init(void)
{
}
int
pt_reg_sstep(struct reg *reg __unused, int step __unused)
{
return (0);
}