b24413180f
Many source files in the tree are missing licensing information, which makes it harder for compliance tools to determine the correct license. By default all files without license information are under the default license of the kernel, which is GPL version 2. Update the files which contain no license information with the 'GPL-2.0' SPDX license identifier. The SPDX identifier is a legally binding shorthand, which can be used instead of the full boiler plate text. This patch is based on work done by Thomas Gleixner and Kate Stewart and Philippe Ombredanne. How this work was done: Patches were generated and checked against linux-4.14-rc6 for a subset of the use cases: - file had no licensing information it it. - file was a */uapi/* one with no licensing information in it, - file was a */uapi/* one with existing licensing information, Further patches will be generated in subsequent months to fix up cases where non-standard license headers were used, and references to license had to be inferred by heuristics based on keywords. The analysis to determine which SPDX License Identifier to be applied to a file was done in a spreadsheet of side by side results from of the output of two independent scanners (ScanCode & Windriver) producing SPDX tag:value files created by Philippe Ombredanne. Philippe prepared the base worksheet, and did an initial spot review of a few 1000 files. The 4.13 kernel was the starting point of the analysis with 60,537 files assessed. Kate Stewart did a file by file comparison of the scanner results in the spreadsheet to determine which SPDX license identifier(s) to be applied to the file. She confirmed any determination that was not immediately clear with lawyers working with the Linux Foundation. Criteria used to select files for SPDX license identifier tagging was: - Files considered eligible had to be source code files. - Make and config files were included as candidates if they contained >5 lines of source - File already had some variant of a license header in it (even if <5 lines). All documentation files were explicitly excluded. The following heuristics were used to determine which SPDX license identifiers to apply. - when both scanners couldn't find any license traces, file was considered to have no license information in it, and the top level COPYING file license applied. For non */uapi/* files that summary was: SPDX license identifier # files ---------------------------------------------------|------- GPL-2.0 11139 and resulted in the first patch in this series. If that file was a */uapi/* path one, it was "GPL-2.0 WITH Linux-syscall-note" otherwise it was "GPL-2.0". Results of that was: SPDX license identifier # files ---------------------------------------------------|------- GPL-2.0 WITH Linux-syscall-note 930 and resulted in the second patch in this series. - if a file had some form of licensing information in it, and was one of the */uapi/* ones, it was denoted with the Linux-syscall-note if any GPL family license was found in the file or had no licensing in it (per prior point). Results summary: SPDX license identifier # files ---------------------------------------------------|------ GPL-2.0 WITH Linux-syscall-note 270 GPL-2.0+ WITH Linux-syscall-note 169 ((GPL-2.0 WITH Linux-syscall-note) OR BSD-2-Clause) 21 ((GPL-2.0 WITH Linux-syscall-note) OR BSD-3-Clause) 17 LGPL-2.1+ WITH Linux-syscall-note 15 GPL-1.0+ WITH Linux-syscall-note 14 ((GPL-2.0+ WITH Linux-syscall-note) OR BSD-3-Clause) 5 LGPL-2.0+ WITH Linux-syscall-note 4 LGPL-2.1 WITH Linux-syscall-note 3 ((GPL-2.0 WITH Linux-syscall-note) OR MIT) 3 ((GPL-2.0 WITH Linux-syscall-note) AND MIT) 1 and that resulted in the third patch in this series. - when the two scanners agreed on the detected license(s), that became the concluded license(s). - when there was disagreement between the two scanners (one detected a license but the other didn't, or they both detected different licenses) a manual inspection of the file occurred. - In most cases a manual inspection of the information in the file resulted in a clear resolution of the license that should apply (and which scanner probably needed to revisit its heuristics). - When it was not immediately clear, the license identifier was confirmed with lawyers working with the Linux Foundation. - If there was any question as to the appropriate license identifier, the file was flagged for further research and to be revisited later in time. In total, over 70 hours of logged manual review was done on the spreadsheet to determine the SPDX license identifiers to apply to the source files by Kate, Philippe, Thomas and, in some cases, confirmation by lawyers working with the Linux Foundation. Kate also obtained a third independent scan of the 4.13 code base from FOSSology, and compared selected files where the other two scanners disagreed against that SPDX file, to see if there was new insights. The Windriver scanner is based on an older version of FOSSology in part, so they are related. Thomas did random spot checks in about 500 files from the spreadsheets for the uapi headers and agreed with SPDX license identifier in the files he inspected. For the non-uapi files Thomas did random spot checks in about 15000 files. In initial set of patches against 4.14-rc6, 3 files were found to have copy/paste license identifier errors, and have been fixed to reflect the correct identifier. Additionally Philippe spent 10 hours this week doing a detailed manual inspection and review of the 12,461 patched files from the initial patch version early this week with: - a full scancode scan run, collecting the matched texts, detected license ids and scores - reviewing anything where there was a license detected (about 500+ files) to ensure that the applied SPDX license was correct - reviewing anything where there was no detection but the patch license was not GPL-2.0 WITH Linux-syscall-note to ensure that the applied SPDX license was correct This produced a worksheet with 20 files needing minor correction. This worksheet was then exported into 3 different .csv files for the different types of files to be modified. These .csv files were then reviewed by Greg. Thomas wrote a script to parse the csv files and add the proper SPDX tag to the file, in the format that the file expected. This script was further refined by Greg based on the output to detect more types of files automatically and to distinguish between header and source .c files (which need different comment types.) Finally Greg ran the script using the .csv files to generate the patches. Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org> Reviewed-by: Philippe Ombredanne <pombredanne@nexb.com> Reviewed-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
166 lines
5.7 KiB
C
166 lines
5.7 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef __ASM_ALPHA_ELF_H
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#define __ASM_ALPHA_ELF_H
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#include <asm/auxvec.h>
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#include <asm/special_insns.h>
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/* Special values for the st_other field in the symbol table. */
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#define STO_ALPHA_NOPV 0x80
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#define STO_ALPHA_STD_GPLOAD 0x88
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/*
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* Alpha ELF relocation types
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*/
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#define R_ALPHA_NONE 0 /* No reloc */
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#define R_ALPHA_REFLONG 1 /* Direct 32 bit */
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#define R_ALPHA_REFQUAD 2 /* Direct 64 bit */
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#define R_ALPHA_GPREL32 3 /* GP relative 32 bit */
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#define R_ALPHA_LITERAL 4 /* GP relative 16 bit w/optimization */
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#define R_ALPHA_LITUSE 5 /* Optimization hint for LITERAL */
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#define R_ALPHA_GPDISP 6 /* Add displacement to GP */
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#define R_ALPHA_BRADDR 7 /* PC+4 relative 23 bit shifted */
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#define R_ALPHA_HINT 8 /* PC+4 relative 16 bit shifted */
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#define R_ALPHA_SREL16 9 /* PC relative 16 bit */
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#define R_ALPHA_SREL32 10 /* PC relative 32 bit */
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#define R_ALPHA_SREL64 11 /* PC relative 64 bit */
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#define R_ALPHA_GPRELHIGH 17 /* GP relative 32 bit, high 16 bits */
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#define R_ALPHA_GPRELLOW 18 /* GP relative 32 bit, low 16 bits */
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#define R_ALPHA_GPREL16 19 /* GP relative 16 bit */
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#define R_ALPHA_COPY 24 /* Copy symbol at runtime */
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#define R_ALPHA_GLOB_DAT 25 /* Create GOT entry */
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#define R_ALPHA_JMP_SLOT 26 /* Create PLT entry */
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#define R_ALPHA_RELATIVE 27 /* Adjust by program base */
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#define R_ALPHA_BRSGP 28
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#define R_ALPHA_TLSGD 29
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#define R_ALPHA_TLS_LDM 30
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#define R_ALPHA_DTPMOD64 31
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#define R_ALPHA_GOTDTPREL 32
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#define R_ALPHA_DTPREL64 33
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#define R_ALPHA_DTPRELHI 34
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#define R_ALPHA_DTPRELLO 35
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#define R_ALPHA_DTPREL16 36
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#define R_ALPHA_GOTTPREL 37
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#define R_ALPHA_TPREL64 38
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#define R_ALPHA_TPRELHI 39
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#define R_ALPHA_TPRELLO 40
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#define R_ALPHA_TPREL16 41
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#define SHF_ALPHA_GPREL 0x10000000
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/* Legal values for e_flags field of Elf64_Ehdr. */
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#define EF_ALPHA_32BIT 1 /* All addresses are below 2GB */
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/*
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* ELF register definitions..
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*/
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/*
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* The OSF/1 version of <sys/procfs.h> makes gregset_t 46 entries long.
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* I have no idea why that is so. For now, we just leave it at 33
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* (32 general regs + processor status word).
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*/
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#define ELF_NGREG 33
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#define ELF_NFPREG 32
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typedef unsigned long elf_greg_t;
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typedef elf_greg_t elf_gregset_t[ELF_NGREG];
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typedef double elf_fpreg_t;
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typedef elf_fpreg_t elf_fpregset_t[ELF_NFPREG];
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/*
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* This is used to ensure we don't load something for the wrong architecture.
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*/
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#define elf_check_arch(x) ((x)->e_machine == EM_ALPHA)
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/*
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* These are used to set parameters in the core dumps.
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*/
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#define ELF_CLASS ELFCLASS64
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#define ELF_DATA ELFDATA2LSB
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#define ELF_ARCH EM_ALPHA
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#define ELF_EXEC_PAGESIZE 8192
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/* This is the location that an ET_DYN program is loaded if exec'ed. Typical
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use of this is to invoke "./ld.so someprog" to test out a new version of
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the loader. We need to make sure that it is out of the way of the program
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that it will "exec", and that there is sufficient room for the brk. */
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#define ELF_ET_DYN_BASE (TASK_UNMAPPED_BASE + 0x1000000)
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/* $0 is set by ld.so to a pointer to a function which might be
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registered using atexit. This provides a mean for the dynamic
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linker to call DT_FINI functions for shared libraries that have
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been loaded before the code runs.
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So that we can use the same startup file with static executables,
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we start programs with a value of 0 to indicate that there is no
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such function. */
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#define ELF_PLAT_INIT(_r, load_addr) _r->r0 = 0
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/* The registers are laid out in pt_regs for PAL and syscall
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convenience. Re-order them for the linear elf_gregset_t. */
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struct pt_regs;
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struct thread_info;
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struct task_struct;
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extern void dump_elf_thread(elf_greg_t *dest, struct pt_regs *pt,
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struct thread_info *ti);
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#define ELF_CORE_COPY_REGS(DEST, REGS) \
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dump_elf_thread(DEST, REGS, current_thread_info());
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/* Similar, but for a thread other than current. */
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extern int dump_elf_task(elf_greg_t *dest, struct task_struct *task);
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#define ELF_CORE_COPY_TASK_REGS(TASK, DEST) \
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dump_elf_task(*(DEST), TASK)
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/* Similar, but for the FP registers. */
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extern int dump_elf_task_fp(elf_fpreg_t *dest, struct task_struct *task);
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#define ELF_CORE_COPY_FPREGS(TASK, DEST) \
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dump_elf_task_fp(*(DEST), TASK)
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/* This yields a mask that user programs can use to figure out what
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instruction set this CPU supports. This is trivial on Alpha,
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but not so on other machines. */
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#define ELF_HWCAP (~amask(-1))
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/* This yields a string that ld.so will use to load implementation
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specific libraries for optimization. This is more specific in
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intent than poking at uname or /proc/cpuinfo. */
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#define ELF_PLATFORM \
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({ \
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enum implver_enum i_ = implver(); \
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( i_ == IMPLVER_EV4 ? "ev4" \
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: i_ == IMPLVER_EV5 \
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? (amask(AMASK_BWX) ? "ev5" : "ev56") \
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: amask (AMASK_CIX) ? "ev6" : "ev67"); \
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})
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#define SET_PERSONALITY(EX) \
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set_personality(((EX).e_flags & EF_ALPHA_32BIT) \
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? PER_LINUX_32BIT : PER_LINUX)
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extern int alpha_l1i_cacheshape;
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extern int alpha_l1d_cacheshape;
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extern int alpha_l2_cacheshape;
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extern int alpha_l3_cacheshape;
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/* update AT_VECTOR_SIZE_ARCH if the number of NEW_AUX_ENT entries changes */
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#define ARCH_DLINFO \
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do { \
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NEW_AUX_ENT(AT_L1I_CACHESHAPE, alpha_l1i_cacheshape); \
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NEW_AUX_ENT(AT_L1D_CACHESHAPE, alpha_l1d_cacheshape); \
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NEW_AUX_ENT(AT_L2_CACHESHAPE, alpha_l2_cacheshape); \
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NEW_AUX_ENT(AT_L3_CACHESHAPE, alpha_l3_cacheshape); \
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} while (0)
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#endif /* __ASM_ALPHA_ELF_H */
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