| /* |
| * Copyright (c) 2014-2017, 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. |
| */ |
| |
| #ifndef PT_MAPPED_SECTION_H |
| #define PT_MAPPED_SECTION_H |
| |
| #include "intel-pt.h" |
| #include "pt_section.h" |
| |
| #include <stdint.h> |
| |
| |
| /* A section mapped into memory. */ |
| struct pt_mapped_section { |
| /* The section that is mapped. */ |
| struct pt_section *section; |
| |
| /* The address space into which the section is mapped. */ |
| struct pt_asid asid; |
| |
| /* The virtual address at which the section is mapped. */ |
| uint64_t vaddr; |
| }; |
| |
| |
| /* Initialize a mapped section - @section may be NULL. */ |
| static inline 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); |
| } |
| |
| /* Destroy a mapped section - does not free @msec->section. */ |
| static inline void pt_msec_fini(struct pt_mapped_section *msec) |
| { |
| (void) msec; |
| |
| /* Nothing to do. */ |
| } |
| |
| /* Return the virtual address of the beginning of the memory region. */ |
| static inline uint64_t pt_msec_begin(const struct pt_mapped_section *msec) |
| { |
| if (!msec) |
| return 0ull; |
| |
| return msec->vaddr; |
| } |
| |
| /* Return the virtual address one byte past the end of the memory region. */ |
| static inline 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) |
| size += msec->vaddr; |
| |
| return size; |
| } |
| |
| /* Return the underlying section. */ |
| static inline struct pt_section * |
| pt_msec_section(const struct pt_mapped_section *msec) |
| { |
| return msec->section; |
| } |
| |
| /* Return an identifier for the address-space the section is mapped into. */ |
| static inline const struct pt_asid * |
| pt_msec_asid(const struct pt_mapped_section *msec) |
| { |
| if (!msec) |
| return NULL; |
| |
| return &msec->asid; |
| } |
| |
| /* Translate a section/file offset into a virtual address. */ |
| static inline uint64_t pt_msec_map(const struct pt_mapped_section *msec, |
| uint64_t offset) |
| { |
| return offset + msec->vaddr; |
| } |
| |
| /* Translate a virtual address into a section/file offset. */ |
| static inline uint64_t pt_msec_unmap(const struct pt_mapped_section *msec, |
| uint64_t vaddr) |
| { |
| return vaddr - msec->vaddr; |
| } |
| |
| #endif /* PT_MAPPED_SECTION_H */ |