From 2745674244d6aecddcf636475034bdb9c0a6b4a0 Mon Sep 17 00:00:00 2001 From: Anton Kolesov Date: Mon, 15 May 2017 16:17:29 +0300 Subject: arc: Add support for ARC HS extra registers in core files When a coredump is generated, there are a few registers in ARC HS that are put under a special section, namely ".reg-v2". It is for backward compatibility reasons with older tools that we have decided not to extend the generic ".reg" section. This patch makes it possible to display the information better regarding that section. Compare the output of "readelf" without and with these changes: $ readelf -n core # without the patch ... LINUX 0x0000000c Unknown note type: (0x00000600) description data: 78 08 00 00 2f 6c 64 2d 75 43 6c 69 $ readelf -n core # with the patch ... LINUX 0x0000000c NT_ARC_V2 (ARC HS accumulator/extra registers) description data: 78 08 00 00 2f 6c 64 2d 75 43 6c 69 In another commit (soon to be submitted), GDB will makes use of these changes to parse the extra section and its registers. bfd/ChangeLog 2020-03-26 Anton Kolesov * elf-bfd.h (elfcore_write_arc_v2): Add prototype. * elf.c (elfcore_grok_arc_v2): New function. (elfcore_grok_note): Call the new function to handle the corresponding note. (elfcore_write_arc_v2): New function. (elfcore_write_register_note): Call the new function to handle the corresponding pseudo-sections. binutils/ChangeLog 2020-03-26 Anton Kolesov * readelf.c (get_note_type): Handle NT_ARC_V2. include/elf/ChangeLog 2020-03-26 Anton Kolesov * common.h (NT_ARC_V2): New macro definitions. --- include/ChangeLog | 4 ++++ include/elf/common.h | 2 ++ 2 files changed, 6 insertions(+) (limited to 'include') diff --git a/include/ChangeLog b/include/ChangeLog index bf379cc..eea127a 100644 --- a/include/ChangeLog +++ b/include/ChangeLog @@ -1,3 +1,7 @@ +2020-04-23 Anton Kolesov + + * elf/common.h (NT_ARC_V2): New macro definitions. + 2020-04-22 Max Filippov PR ld/25861 diff --git a/include/elf/common.h b/include/elf/common.h index 6741c34..26e6fbc 100644 --- a/include/elf/common.h +++ b/include/elf/common.h @@ -652,6 +652,8 @@ /* note name must be "LINUX". */ #define NT_ARM_PAC_MASK 0x406 /* AArch pointer authentication code masks */ /* note name must be "LINUX". */ +#define NT_ARC_V2 0x600 /* ARC HS accumulator/extra registers. */ + /* note name must be "LINUX". */ #define NT_SIGINFO 0x53494749 /* Fields of siginfo_t. */ #define NT_FILE 0x46494c45 /* Description of mapped files. */ -- cgit v1.1