kernel/linux.git/scripts/genksyms/genksyms.c, branch v5.10.6

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156

2019-05-30T18:26:35+00:00

Based on 1 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license as published by the free software foundation either version 2 of the license or at your option any later version this program is distributed in the hope that it will be useful but without any warranty without even the implied warranty of merchantability or fitness for a particular purpose see the gnu general public license for more details you should have received a copy of the gnu general public license along with this program if not write to the free software foundation inc 59 temple place suite 330 boston ma 02111 1307 usa extracted by the scancode license scanner the SPDX license identifier GPL-2.0-or-later has been chosen to replace the boilerplate/reference in 1334 file(s). Signed-off-by: Thomas Gleixner Reviewed-by: Allison Randal Reviewed-by: Richard Fontana Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190527070033.113240726@linutronix.de Signed-off-by: Greg Kroah-Hartman

genksyms: remove symbol prefix support

2018-05-17T13:43:35+00:00

CONFIG_HAVE_UNDERSCORE_SYMBOL_PREFIX was selected by BLACKFIN, METAG. They were removed by commit 4ba66a976072 ("arch: remove blackfin port"), commit bb6fb6dfcc17 ("metag: Remove arch/metag/"), respectively. No more architecture enables CONFIG_HAVE_UNDERSCORE_SYMBOL_PREFIX, hence the -s (--symbol-prefix) option is unnecessary. Signed-off-by: Masahiro Yamada Reviewed-by: Sam Ravnborg

kbuild: modversions: add infrastructure for emitting relative CRCs

2017-02-03T16:28:25+00:00

This add the kbuild infrastructure that will allow architectures to emit vmlinux symbol CRCs as 32-bit offsets to another location in the kernel where the actual value is stored. This works around problems with CRCs being mistaken for relocatable symbols on kernels that self relocate at runtime (i.e., powerpc with CONFIG_RELOCATABLE=y) For the kbuild side of things, this comes down to the following: - introducing a Kconfig symbol MODULE_REL_CRCS - adding a -R switch to genksyms to instruct it to emit the CRC symbols as references into the .rodata section - making modpost distinguish such references from absolute CRC symbols by the section index (SHN_ABS) - making kallsyms disregard non-absolute symbols with a __crc_ prefix Signed-off-by: Ard Biesheuvel Signed-off-by: Linus Torvalds

scripts: genksyms: fix resource leak

2016-04-20T07:24:49+00:00

This commit fixed resource leak at func main Signed-off-by: Maxim Zhukov Signed-off-by: Michal Marek

genksyms: Handle string literals with spaces in reference files

2015-12-09T14:19:23+00:00

The reference files use spaces to separate tokens, however, we must preserve spaces inside string literals. Currently the only case in the tree is struct edac_raw_error_desc in : $ KBUILD_SYMTYPES=1 make -s drivers/edac/amd64_edac.symtypes $ mv drivers/edac/amd64_edac.{symtypes,symref} $ KBUILD_SYMTYPES=1 make -s drivers/edac/amd64_edac.symtypes drivers/edac/amd64_edac.c:527: warning: amd64_get_dram_hole_info: modversion changed because of changes in struct edac_raw_error_desc Signed-off-by: Michal Marek

genksyms: pass symbol-prefix instead of arch

2013-03-20T00:57:27+00:00

Pass symbol-prefix to genksyms instead of arch, so that the decision what symbol prefix to use is kept in one place. Basically genksyms used to take a -a $ARCH argument and it used that to determine whether to add an underscore symbol prefix. It's now changed to take a -s $SYMBOL_PREFIX argument so that the caller decides whether a symbol prefix is required. The build system then uses CONFIG_HAVE_UNDERSCORE_SYMBOL_PREFIX to determine whether to pass the argument. Signed-off-by: James Hogan Signed-off-by: Rusty Russell

genksyms: fix metag symbol prefix on crc symbols

2013-03-02T20:11:13+00:00

Meta uses symbol prefixes, so add "metag" to the list of architectures to set the mod_prefix to "_" for. This fixes __crc_* symbols to add the extra underscore to match _CRC_SYMBOL macro in and so that modpost finds them. Signed-off-by: James Hogan

genksyms: Do not expand internal types

2011-10-11T10:00:39+00:00

Consider structures, unions and enums defined in the source file as internal and do not expand them. This way, changes to e.g. struct serial_private in drivers/tty/serial/8250_pci.c will not affect the checksum of the pciserial_* exports.

genksyms: Use same type in loop comparison

2011-07-25T12:55:17+00:00

The ARRAY_SIZE macro in scripts/genksyms/genksyms.c returns a value of type size_t. That value is being compared to a variable of type int in a loop in read_node(). Change the int variable to size_t type as well, so we don't do signed vs unsigned type comparisons with all the potential promotion/sign extension trouble that can cause (also silences compiler warnings at high levels of warnings). Signed-off-by: Jesper Juhl Signed-off-by: Michal Marek

genksyms: Track changes to enum constants

2011-03-17T14:13:56+00:00

Enum constants can be used as array sizes; if the enum itself does not appear in the symbol expansion, a change in the enum constant will go unnoticed. Example patch that changes the ABI but does not change the checksum with current genksyms: | enum e { | E1, | E2, |+ E3, | E_MAX | }; | | struct s { | int a[E_MAX]; | } | | int f(struct s *s) { ... } | EXPORT_SYMBOL(f) Therefore, remember the value of each enum constant and expand each occurence to . The value is not actually computed, but instead an expression in the form (last explicitly assigned value) + N is used. This avoids having to parse and semantically understand whole of C. Note: The changes won't take effect until the lexer and parser are rebuilt by the next patch. Signed-off-by: Michal Marek Acked-by: Sam Ravnborg