diff options
Diffstat (limited to 'lib/libthread_db/arch/i386/libpthread_md.c')
| -rw-r--r-- | lib/libthread_db/arch/i386/libpthread_md.c | 118 |
1 files changed, 118 insertions, 0 deletions
diff --git a/lib/libthread_db/arch/i386/libpthread_md.c b/lib/libthread_db/arch/i386/libpthread_md.c new file mode 100644 index 0000000..d41865f --- /dev/null +++ b/lib/libthread_db/arch/i386/libpthread_md.c @@ -0,0 +1,118 @@ +/* + * Copyright (c) 2004 David Xu <davidxu@freebsd.org> + * All rights reserved. + * + * 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 <machine/npx.h> +#include <string.h> +#include <thread_db.h> + +#include "libpthread_db.h" + +static int has_xmm_regs; + +void +pt_reg_to_ucontext(const struct reg *r, ucontext_t *uc) +{ + memcpy(&uc->uc_mcontext.mc_fs, &r->r_fs, 18*4); + uc->uc_mcontext.mc_gs = r->r_gs; +} + +void +pt_ucontext_to_reg(const ucontext_t *uc, struct reg *r) +{ + memcpy(&r->r_fs, &uc->uc_mcontext.mc_fs, 18*4); + r->r_gs = uc->uc_mcontext.mc_gs; +} + +void +pt_fpreg_to_ucontext(const struct fpreg* r, ucontext_t *uc) +{ + if (!has_xmm_regs) + memcpy(&uc->uc_mcontext.mc_fpstate, r, + sizeof(struct save87)); + else { + int i; + struct savexmm *sx = (struct savexmm *)&uc->uc_mcontext.mc_fpstate; + memcpy(&sx->sv_env, &r->fpr_env, sizeof(r->fpr_env)); + for (i = 0; i < 8; ++i) + memcpy(&sx->sv_fp[i].fp_acc, &r->fpr_acc[i], 10); + } +} + +void +pt_ucontext_to_fpreg(const ucontext_t *uc, struct fpreg *r) +{ + if (!has_xmm_regs) + memcpy(r, &uc->uc_mcontext.mc_fpstate, sizeof(struct save87)); + else { + int i; + struct savexmm *sx = (struct savexmm *)&uc->uc_mcontext.mc_fpstate; + memcpy(&r->fpr_env, &sx->sv_env, sizeof(r->fpr_env)); + for (i = 0; i < 8; ++i) + memcpy(&r->fpr_acc[i], &sx->sv_fp[i].fp_acc, 10); + } +} + +void +pt_fxsave_to_ucontext(const char* r, ucontext_t *uc) +{ + if (has_xmm_regs) + memcpy(&uc->uc_mcontext.mc_fpstate, r, sizeof(struct savexmm)); +} + +void +pt_ucontext_to_fxsave(const ucontext_t *uc, char *r) +{ + if (has_xmm_regs) + memcpy(r, &uc->uc_mcontext.mc_fpstate, sizeof(struct savexmm)); +} + +void +pt_md_init(void) +{ + ucontext_t uc; + + getcontext(&uc); + if (uc.uc_mcontext.mc_fpformat == _MC_FPFMT_XMM) + has_xmm_regs = 1; +} + +int +pt_reg_sstep(struct reg *reg, int step) +{ + unsigned int old; + + old = reg->r_eflags; + if (step) + reg->r_eflags |= 0x0100; + else + reg->r_eflags &= ~0x0100; + return (old != reg->r_eflags); /* changed ? */ +} + |
