binutils-gdb

Tree: 8f12a1a841

Author	SHA1	Message	Date
Indu Bhagat	a5cddf7b64	doc: sframe: update specification for SFRAME_VERSION_2 Add details for the changes made from Version 1 to Version 2 of the format. Also add details about alignment in the SFrame format. A portion of the SFrame stack trace format has an unaligned on-disk representation. Add description at relevant points in the specificatin to clarify the alignment related details.	3 years ago
Indu Bhagat	3169b734cf	libsframe: fix sframe_find_fre for pltN entries For a toy application on x86_64, for example, following is the SFrame stack trace information for the 3 pltN entries of 16 bytes each: func idx [1]: pc = 0x401030, size = 48 bytes STARTPC[m] CFA FP RA 0000000000000000 sp+8 u u 000000000000000b sp+16 u u The data in first column is the start_ip_offset. Also note that the FDE is of type SFRAME_FDE_TYPE_PCMASK (denoted by the [m] on LHS). Where each pltN (note: excluding plt0 entry) entry looks like: 401030: jmp 0x2fca(%rip) 401036: push $0x0 40103b: jmp 401020<_init+0x20> 401040: jmp 0x2fc2(%rip) 401046: push $0x1 40104b: jmp 401020<_init+0x20> 401050: jmp 0x2fba(%rip) 401056: push $0x2 40105b: jmp 401020<_init+0x20> Now, to find SFrame stack trace information from an FDE of type SFRAME_FDE_TYPE_PCMASK, sframe_find_fre () was doing an operation like, (start_ip_offset & 0xf) >= (pc & 0xf) This works for pltN entry of size, say, less than 16 bytes. But if the pltN entries or similar code stubs (for which SFrame FDE of type SFRAME_FDE_TYPE_PCMASK may be used), evolve to be of size > 16 bytes, this will cease to work. To match the range covered by the SFrame FRE, one should instead perform a modulo operation. The constant for the modulo operation must be the size of the pltN entry. Further, this constant should ideally be encoded in the format, as it may be different for each ABI. In SFrame Version 2 of the format, we will move towards encoding it explicitly in the SFrame FDE. For now, fix up the logic to at least move towards modulo operation. libsframe/ sframe.c (sframe_fre_check_range_p): New definition. (sframe_find_fre): Refactor a bit and use the new definition above. include/ * sframe.h (SFRAME_FDE_TYPE_PCMASK): Update comment. libsframe/doc/ * sframe-spec.texi: Fix the text for SFRAME_FDE_TYPE_PCMASK FDE type.	3 years ago
Indu Bhagat	540034ec40	sframe/doc: minor improvements for readability libsframe/ * sframe-spec.texi: Cosmetic fixes.	3 years ago
Indu Bhagat	469b6d54d3	libsframe/doc: use "stack trace" instead of "unwind" for SFrame SFrame format is meant for generating stack traces only. libsframe/ * doc/sframe-spec.texi: Use "stack trace" instead of "unwind".	4 years ago
Indu Bhagat	436bcab712	libsframe/doc: fix some warnings 'make pdf' in libsframe shows some warnings, some of which (especially the Overfull warnings) are causing undesirable effects on the rendered output. Few examples of the warnings: Underfull \hbox (badness 10000) in paragraph at lines 406--407 @texttt pauth_ Underfull \hbox (badness 10000) in paragraph at lines 407--410 @textrm Specify which key is used for signing the return ... Overfull \hbox (2.0987pt too wide) in paragraph at lines 412--413 @texttt fdetype[]\| ... Overfull \hbox (28.87212pt too wide) in paragraph at lines 446--447 @textrm SFRAME[]FDE[]TYPE[]PCMASK\| ... This patch adjusts column widths of the affected cells to fix a subset of these warnings. For the rest of the warnings, use explicit newline command to fix them. libsframe/ * doc/sframe-spec.texi: Fix various underfull and overfull warnings.	4 years ago
Alan Modra	d87bef3a7b	Update year range in copyright notice of binutils files The newer update-copyright.py fixes file encoding too, removing cr/lf on binutils/bfdtest2.c and ld/testsuite/ld-cygwin/exe-export.exp, and embedded cr in binutils/testsuite/binutils-all/ar.exp string match.	4 years ago
Indu Bhagat	2440ed038a	sframe: doc: update documentation for pauth key in SFrame FDE ChangeLog: * libsframe/doc/sframe-spec.texi	4 years ago
Indu Bhagat	6e09ae77a1	sframe: doc: update spec for the mangled-RA bit in FRE ChangeLog: * libsframe/doc/sframe-spec.texi	4 years ago
Indu Bhagat	cbff1430f8	sframe/doc: remove usage of xrefautomaticsectiontitle xrefautomaticsectiontitle appears to be available from texinfo 5.0 or greater. As such, it is not worthwhile to add requirement for a minimum necessary makeinfo version. So remove the usage of it. Also align node name with section title where possible. ChangeLog: * libsframe/doc/sframe-spec.texi: Remove usage of xrefautomaticsectiontitle.	4 years ago
Indu Bhagat	c1c57352f5	doc: add SFrame spec file ChangeLog: * libsframe/Makefile.am: Add info-in-builddir to AUTOMAKE_OPTIONS. Include doc/local.mk. * libsframe/Makefile.in: Regenerated. * libsframe/configure: Likewise. * libsframe/configure.ac: Check for makeinfo and set BUILD_INFO. * libsframe/doc/local.mk: New file. * libsframe/doc/sframe-spec.texi: Likewise.	4 years ago

10 Commits (8f12a1a841cd0c447de7a5a0f134a0efece73588)