528b729be1a293a21f44149351f3eba5b4e2d870
This commit adds a mechanism for GDB to detect the linetable opcode DW_LNS_set_epilogue_begin. This opcode is set by compilers to indicate that a certain instruction marks the point where the frame is destroyed. While the standard allows for multiple points marked with epilogue_begin in the same function, for performance reasons, the function that searches for the epilogue address will only find the last address that sets this flag for a given block. This commit also changes amd64_stack_frame_destroyed_p_1 to attempt to use the epilogue begin directly, and only if an epilogue can't be found will it attempt heuristics based on the current instruction. Finally, this commit also changes the dwarf assembler to be able to emit epilogue-begin instructions, to make it easier to test this patch Approved-By: Tom Tromey <tom@tromey.com>
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README for GNU development tools This directory contains various GNU compilers, assemblers, linkers, debuggers, etc., plus their support routines, definitions, and documentation. If you are receiving this as part of a GDB release, see the file gdb/README. If with a binutils release, see binutils/README; if with a libg++ release, see libg++/README, etc. That'll give you info about this package -- supported targets, how to use it, how to report bugs, etc. It is now possible to automatically configure and build a variety of tools with one command. To build all of the tools contained herein, run the ``configure'' script here, e.g.: ./configure make To install them (by default in /usr/local/bin, /usr/local/lib, etc), then do: make install (If the configure script can't determine your type of computer, give it the name as an argument, for instance ``./configure sun4''. You can use the script ``config.sub'' to test whether a name is recognized; if it is, config.sub translates it to a triplet specifying CPU, vendor, and OS.) If you have more than one compiler on your system, it is often best to explicitly set CC in the environment before running configure, and to also set CC when running make. For example (assuming sh/bash/ksh): CC=gcc ./configure make A similar example using csh: setenv CC gcc ./configure make Much of the code and documentation enclosed is copyright by the Free Software Foundation, Inc. See the file COPYING or COPYING.LIB in the various directories, for a description of the GNU General Public License terms under which you can copy the files. REPORTING BUGS: Again, see gdb/README, binutils/README, etc., for info on where and how to report problems.
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