[Bug debug/83917] [8 Regression] with -mcall-ms2sysv-xlogues, stepping into x86 tail-call restore stub gives bad backtrace

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83917

--- Comment #6 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Mon Feb 26 19:46:34 2018
New Revision: 258010

URL: https://gcc.gnu.org/viewcvs?rev=258010&root=gcc&view=rev
Log:
        PR debug/83917
        * config/i386/i386-asm.h (PACKAGE_VERSION, PACKAGE_NAME,
        PACKAGE_STRING, PACKAGE_TARNAME, PACKAGE_URL): Undefine between
        inclusion of auto-target.h and auto-host.h.
        (USE_GAS_CFI_DIRECTIVES): Define if not defined already based on
        __GCC_HAVE_DWARF2_CFI_ASM.
        (cfi_startproc, cfi_endproc, cfi_adjust_cfa_offset,
        cfi_def_cfa_register, cfi_def_cfa, cfi_register, cfi_offset, cfi_push,
        cfi_pop): Define.
        * config/i386/cygwin.S: Don't include auto-host.h here, just
        define USE_GAS_CFI_DIRECTIVES to 1 or 0 and include i386-asm.h.
        (cfi_startproc, cfi_endproc, cfi_adjust_cfa_offset,
        cfi_def_cfa_register, cfi_register, cfi_push, cfi_pop): Remove.
        * config/i386/resms64fx.h: Add cfi_* directives.
        * config/i386/resms64x.h: Likewise.

Modified:
    trunk/libgcc/ChangeLog
    trunk/libgcc/config/i386/cygwin.S
    trunk/libgcc/config/i386/i386-asm.h
    trunk/libgcc/config/i386/resms64fx.h
    trunk/libgcc/config/i386/resms64x.h