2 * Copyright (c) 2004 David Xu <davidxu@freebsd.org>
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 #include <sys/cdefs.h>
28 __FBSDID("$FreeBSD$");
30 #include <sys/types.h>
31 #include <machine/npx.h>
33 #include <thread_db.h>
35 #include "libpthread_db.h"
37 static int has_xmm_regs;
40 pt_reg_to_ucontext(const struct reg *r, ucontext_t *uc)
42 memcpy(&uc->uc_mcontext.mc_fs, &r->r_fs, 18*4);
43 uc->uc_mcontext.mc_gs = r->r_gs;
47 pt_ucontext_to_reg(const ucontext_t *uc, struct reg *r)
49 memcpy(&r->r_fs, &uc->uc_mcontext.mc_fs, 18*4);
50 r->r_gs = uc->uc_mcontext.mc_gs;
54 pt_fpreg_to_ucontext(const struct fpreg* r, ucontext_t *uc)
57 memcpy(&uc->uc_mcontext.mc_fpstate, r,
58 sizeof(struct save87));
61 struct savexmm *sx = (struct savexmm *)&uc->uc_mcontext.mc_fpstate;
62 memcpy(&sx->sv_env, &r->fpr_env, sizeof(r->fpr_env));
63 for (i = 0; i < 8; ++i)
64 memcpy(&sx->sv_fp[i].fp_acc, &r->fpr_acc[i], 10);
69 pt_ucontext_to_fpreg(const ucontext_t *uc, struct fpreg *r)
72 memcpy(r, &uc->uc_mcontext.mc_fpstate, sizeof(struct save87));
75 struct savexmm *sx = (struct savexmm *)&uc->uc_mcontext.mc_fpstate;
76 memcpy(&r->fpr_env, &sx->sv_env, sizeof(r->fpr_env));
77 for (i = 0; i < 8; ++i)
78 memcpy(&r->fpr_acc[i], &sx->sv_fp[i].fp_acc, 10);
83 pt_fxsave_to_ucontext(const char* r, ucontext_t *uc)
86 memcpy(&uc->uc_mcontext.mc_fpstate, r, sizeof(struct savexmm));
90 pt_ucontext_to_fxsave(const ucontext_t *uc, char *r)
93 memcpy(r, &uc->uc_mcontext.mc_fpstate, sizeof(struct savexmm));
102 if (uc.uc_mcontext.mc_fpformat == _MC_FPFMT_XMM)
107 pt_reg_sstep(struct reg *reg, int step)
113 reg->r_eflags |= 0x0100;
115 reg->r_eflags &= ~0x0100;
116 return (old != reg->r_eflags); /* changed ? */