| /* |
| * Copyright (c) 2014-2015, Intel Corporation |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions are met: |
| * |
| * * Redistributions of source code must retain the above copyright notice, |
| * this list of conditions and the following disclaimer. |
| * * 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. |
| * * Neither the name of Intel Corporation nor the names of its contributors |
| * may be used to endorse or promote products derived from this software |
| * without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS 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 COPYRIGHT OWNER 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 "pt_mapped_section.h" |
| #include "pt_section.h" |
| #include "pt_asid.h" |
| |
| #include "intel-pt.h" |
| |
| |
| void pt_msec_init(struct pt_mapped_section *msec, struct pt_section *section, |
| const struct pt_asid *asid, uint64_t vaddr) |
| { |
| if (!msec) |
| return; |
| |
| msec->section = section; |
| msec->vaddr = vaddr; |
| |
| if (asid) |
| msec->asid = *asid; |
| else |
| pt_asid_init(&msec->asid); |
| } |
| |
| void pt_msec_fini(struct pt_mapped_section *msec) |
| { |
| if (!msec) |
| return; |
| |
| msec->section = NULL; |
| msec->vaddr = 0ull; |
| } |
| |
| uint64_t pt_msec_begin(const struct pt_mapped_section *msec) |
| { |
| if (!msec) |
| return 0ull; |
| |
| return msec->vaddr; |
| } |
| |
| uint64_t pt_msec_end(const struct pt_mapped_section *msec) |
| { |
| uint64_t size; |
| |
| if (!msec) |
| return 0ull; |
| |
| size = pt_section_size(msec->section); |
| if (!size) |
| return 0ull; |
| |
| return msec->vaddr + size; |
| } |
| |
| const struct pt_asid *pt_msec_asid(const struct pt_mapped_section *msec) |
| { |
| if (!msec) |
| return NULL; |
| |
| return &msec->asid; |
| } |
| |
| int pt_msec_matches_asid(const struct pt_mapped_section *msec, |
| const struct pt_asid *asid) |
| { |
| if (!msec || !asid) |
| return -pte_internal; |
| |
| return pt_asid_match(&msec->asid, asid); |
| } |
| |
| int pt_msec_read(const struct pt_mapped_section *msec, uint8_t *buffer, |
| uint16_t size, const struct pt_asid *asid, uint64_t addr) |
| { |
| struct pt_section *sec; |
| int errcode, status; |
| |
| if (!msec) |
| return -pte_internal; |
| |
| sec = msec->section; |
| |
| errcode = pt_section_map(sec); |
| if (errcode < 0) |
| return errcode; |
| |
| status = pt_msec_read_mapped(msec, buffer, size, asid, addr); |
| |
| errcode = pt_section_unmap(sec); |
| if (errcode < 0) |
| return errcode; |
| |
| return status; |
| } |
| |
| int pt_msec_read_mapped(const struct pt_mapped_section *msec, uint8_t *buffer, |
| uint16_t size, const struct pt_asid *asid, |
| uint64_t addr) |
| { |
| struct pt_section *sec; |
| int errcode, status; |
| |
| if (!msec || !asid) |
| return -pte_internal; |
| |
| errcode = pt_msec_matches_asid(msec, asid); |
| if (errcode < 0) |
| return errcode; |
| |
| if (!errcode) |
| return -pte_nomap; |
| |
| if (addr < msec->vaddr) |
| return -pte_nomap; |
| |
| addr -= msec->vaddr; |
| |
| sec = msec->section; |
| |
| status = pt_section_read(sec, buffer, size, addr); |
| |
| return status; |
| } |