diff options
Diffstat (limited to 'cddl/contrib/opensolaris/lib/libdtrace/aarch64/dt_isadep.c')
-rw-r--r-- | cddl/contrib/opensolaris/lib/libdtrace/aarch64/dt_isadep.c | 139 |
1 files changed, 139 insertions, 0 deletions
diff --git a/cddl/contrib/opensolaris/lib/libdtrace/aarch64/dt_isadep.c b/cddl/contrib/opensolaris/lib/libdtrace/aarch64/dt_isadep.c new file mode 100644 index 000000000000..9f5af8570490 --- /dev/null +++ b/cddl/contrib/opensolaris/lib/libdtrace/aarch64/dt_isadep.c @@ -0,0 +1,139 @@ +/* + * 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 + * Copyright 2015 Ruslan Bukin <br@bsdpad.com> + */ + +#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) +#include <libproc_compat.h> +#endif + +/*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) +{ + + dt_dprintf("%s: unimplemented\n", __func__); + + return (DT_PROC_ERR); +} + +/*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 (!ALIGNED_POINTER(off, 4)) + 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); +} |