e753e4129a
* dcrt0.cc: Semi-revert commit 12743c2d5d.
(dll_crt0_0): Drop setting wow64_needs_stack_adjustment on 64 bit.
(_dll_crt0): Split out 64 bit code again and always create new main
thread stack, unless forked off from the non main thread in the parent.
Call create_new_main_thread_stack with parent stack commitsize if
started from the parent's main thread.
Only call child_info_fork::alloc_stack for the latter case on 64 bit.
Slightly rearrange moving rsp and rbp to new stack and document how.
Revert 32 bit wow64 handling to its former self.
* miscfunc.cc (create_new_main_thread_stack): Take a commitsize
parameter and use it if it's not 0. Don't set _main_tls here, it's
done in the caller _dll_crt0 anyway. Return stackbase - 16 bytes,
rather than stacklimit (which was very wrong anyway).
* miscfuncs.h (create_new_main_thread_stack): Accommodate declaration
to aforementioned change.
* wincap.h (wincaps::has_3264_stack_broken): Remove element.
* wincap.cc: Ditto, throughout.
* wow64.cc: Semi-revert to pre-12743c2d5d2721f3a80b4d7671a349be03c1f520
but keep architecture-agnostic type changes intact. Fix formatting.
* wow64.h: Revert to pre-12743c2d5d2721f3a80b4d7671a349be03c1f520.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
114 lines
3.9 KiB
C++
114 lines
3.9 KiB
C++
/* wincap.h: Header for OS capability class.
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Copyright 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011,
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2012, 2013, 2014, 2015 Red Hat, Inc.
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This file is part of Cygwin.
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This software is a copyrighted work licensed under the terms of the
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Cygwin license. Please consult the file "CYGWIN_LICENSE" for
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details. */
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#ifndef _WINCAP_H
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#define _WINCAP_H
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struct wincaps
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{
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DWORD def_guard_pages;
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DWORD max_sys_priv;
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unsigned is_server : 1;
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unsigned has_mandatory_integrity_control : 1;
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unsigned needs_count_in_si_lpres2 : 1;
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unsigned has_recycle_dot_bin : 1;
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unsigned has_gaa_on_link_prefix : 1;
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unsigned has_gaa_largeaddress_bug : 1;
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unsigned supports_all_posix_ai_flags : 1;
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unsigned has_restricted_stack_args : 1;
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unsigned has_transactions : 1;
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unsigned has_sendmsg : 1;
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unsigned has_broken_udf : 1;
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unsigned has_broken_alloc_console : 1;
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unsigned has_always_all_codepages : 1;
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unsigned has_localenames : 1;
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unsigned has_fast_cwd : 1;
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unsigned has_restricted_raw_disk_access : 1;
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unsigned use_dont_resolve_hack : 1;
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unsigned has_console_logon_sid : 1;
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unsigned wow64_has_secondary_stack : 1;
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unsigned has_program_compatibility_assistant : 1;
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unsigned has_pipe_reject_remote_clients : 1;
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unsigned terminate_thread_frees_stack : 1;
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unsigned has_precise_system_time : 1;
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unsigned has_microsoft_accounts : 1;
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unsigned has_set_thread_stack_guarantee : 1;
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unsigned has_broken_rtl_query_process_debug_information : 1;
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unsigned has_processor_groups : 1;
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unsigned has_broken_prefetchvm : 1;
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unsigned has_new_pebteb_region : 1;
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};
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class wincapc
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{
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SYSTEM_INFO system_info;
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RTL_OSVERSIONINFOEXW version;
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char osnam[40];
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ULONG_PTR wow64;
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void *caps;
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public:
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void init ();
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const DWORD cpu_count () const { return system_info.dwNumberOfProcessors; }
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/* The casts to size_t make sure that the returned value has the size of
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a pointer on any system. This is important when using them for bit
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mask operations, like in roundup2. */
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const size_t page_size () const { return (size_t) system_info.dwPageSize; }
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const size_t allocation_granularity () const
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{ return (size_t) system_info.dwAllocationGranularity; }
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const char *osname () const { return osnam; }
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const bool is_wow64 () const { return !!wow64; }
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#define IMPLEMENT(cap) cap() const { return ((wincaps *) this->caps)->cap; }
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DWORD def_guard_page_size () const
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{
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return ((wincaps *) this->caps)->def_guard_pages * page_size ();
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}
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DWORD IMPLEMENT (max_sys_priv)
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bool IMPLEMENT (is_server)
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bool IMPLEMENT (has_mandatory_integrity_control)
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bool IMPLEMENT (needs_count_in_si_lpres2)
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bool IMPLEMENT (has_recycle_dot_bin)
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bool IMPLEMENT (has_gaa_on_link_prefix)
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bool IMPLEMENT (has_gaa_largeaddress_bug)
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bool IMPLEMENT (supports_all_posix_ai_flags)
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bool IMPLEMENT (has_restricted_stack_args)
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bool IMPLEMENT (has_transactions)
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bool IMPLEMENT (has_sendmsg)
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bool IMPLEMENT (has_broken_udf)
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bool IMPLEMENT (has_broken_alloc_console)
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bool IMPLEMENT (has_always_all_codepages)
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bool IMPLEMENT (has_localenames)
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bool IMPLEMENT (has_fast_cwd)
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bool IMPLEMENT (has_restricted_raw_disk_access)
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bool IMPLEMENT (use_dont_resolve_hack)
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bool IMPLEMENT (has_console_logon_sid)
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bool IMPLEMENT (wow64_has_secondary_stack)
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bool IMPLEMENT (has_program_compatibility_assistant)
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bool IMPLEMENT (has_pipe_reject_remote_clients)
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bool IMPLEMENT (terminate_thread_frees_stack)
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bool IMPLEMENT (has_precise_system_time)
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bool IMPLEMENT (has_microsoft_accounts)
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bool IMPLEMENT (has_set_thread_stack_guarantee)
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bool IMPLEMENT (has_broken_rtl_query_process_debug_information)
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bool IMPLEMENT (has_processor_groups)
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bool IMPLEMENT (has_broken_prefetchvm)
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bool IMPLEMENT (has_new_pebteb_region)
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#undef IMPLEMENT
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};
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extern wincapc wincap;
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#endif /* _WINCAP_H */
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