mirror of
git://sourceware.org/git/newlib-cygwin.git
synced 2025-01-19 04:49:25 +08:00
a7f440eb8d
64 bit Windows started out with a 44 bit address space due to a restriction of the AMD64 CPUs at the time. Starting with Windows 8.1, these CPUs are not supported anymore and Windows switched to the full 48 bit address space supported by AMD64. Cygwin didn't follow suit yet so mmaps are still restricted to the lower 44 bit address space. Fix that by using a system-specific upper address for mmap allocations, 44 bit up to Windows 8, 48 bit starting with Windows 8.1. While at it, move the heap by another 8 Gigs to leave some space for a potential extension of DLL address space, and restrict the mmap lower address so the heap can grow to 32 Gigs before colliding with mmaps.
337 lines
10 KiB
C++
337 lines
10 KiB
C++
/* wincap.cc -- figure out on which OS we're running. Set the
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capability class to the appropriate values.
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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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#include "winsup.h"
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#include "miscfuncs.h"
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#include "security.h"
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#include "ntdll.h"
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/* CV, 2008-10-23: All wincapc's have to be in the .cygwin_dll_common section,
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same as wincap itself. Otherwise the capability changes made in
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wincapc::init() are not propagated to any subsequently started process
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in the same session. I'm only writing this longish comment because I'm
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puzzled that this has never been noticed before... */
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wincaps wincap_vista __attribute__((section (".cygwin_dll_common"), shared)) = {
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def_guard_pages:1,
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mmap_storage_high:0x070000000000LL,
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{
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is_server:false,
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needs_count_in_si_lpres2:true,
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needs_query_information:true,
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has_gaa_largeaddress_bug:true,
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has_broken_alloc_console:false,
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has_console_logon_sid:false,
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has_precise_system_time:false,
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has_microsoft_accounts:false,
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has_processor_groups:false,
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has_broken_prefetchvm:false,
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has_new_pebteb_region:false,
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has_broken_whoami:true,
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has_unprivileged_createsymlink:false,
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has_unbiased_interrupt_time:false,
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has_precise_interrupt_time:false,
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has_posix_unlink_semantics:false,
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has_case_sensitive_dirs:false,
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has_posix_rename_semantics:false,
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no_msv1_0_s4u_logon_in_wow64:true,
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has_con_24bit_colors:false,
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},
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};
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wincaps wincap_7 __attribute__((section (".cygwin_dll_common"), shared)) = {
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def_guard_pages:1,
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mmap_storage_high:0x070000000000LL,
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{
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is_server:false,
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needs_count_in_si_lpres2:false,
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needs_query_information:true,
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has_gaa_largeaddress_bug:true,
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has_broken_alloc_console:true,
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has_console_logon_sid:true,
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has_precise_system_time:false,
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has_microsoft_accounts:false,
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has_processor_groups:true,
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has_broken_prefetchvm:false,
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has_new_pebteb_region:false,
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has_broken_whoami:true,
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has_unprivileged_createsymlink:false,
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has_unbiased_interrupt_time:true,
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has_precise_interrupt_time:false,
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has_posix_unlink_semantics:false,
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has_case_sensitive_dirs:false,
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has_posix_rename_semantics:false,
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no_msv1_0_s4u_logon_in_wow64:true,
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has_con_24bit_colors:false,
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},
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};
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wincaps wincap_8 __attribute__((section (".cygwin_dll_common"), shared)) = {
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def_guard_pages:2,
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mmap_storage_high:0x070000000000LL,
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{
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is_server:false,
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needs_count_in_si_lpres2:false,
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needs_query_information:true,
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has_gaa_largeaddress_bug:false,
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has_broken_alloc_console:true,
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has_console_logon_sid:true,
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has_precise_system_time:true,
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has_microsoft_accounts:true,
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has_processor_groups:true,
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has_broken_prefetchvm:false,
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has_new_pebteb_region:false,
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has_broken_whoami:false,
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has_unprivileged_createsymlink:false,
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has_unbiased_interrupt_time:true,
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has_precise_interrupt_time:false,
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has_posix_unlink_semantics:false,
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has_case_sensitive_dirs:false,
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has_posix_rename_semantics:false,
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no_msv1_0_s4u_logon_in_wow64:false,
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has_con_24bit_colors:false,
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},
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};
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wincaps wincap_8_1 __attribute__((section (".cygwin_dll_common"), shared)) = {
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def_guard_pages:2,
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mmap_storage_high:0x700000000000LL,
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{
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is_server:false,
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needs_count_in_si_lpres2:false,
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needs_query_information:false,
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has_gaa_largeaddress_bug:false,
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has_broken_alloc_console:true,
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has_console_logon_sid:true,
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has_precise_system_time:true,
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has_microsoft_accounts:true,
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has_processor_groups:true,
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has_broken_prefetchvm:false,
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has_new_pebteb_region:false,
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has_broken_whoami:false,
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has_unprivileged_createsymlink:false,
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has_unbiased_interrupt_time:true,
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has_precise_interrupt_time:false,
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has_posix_unlink_semantics:false,
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has_case_sensitive_dirs:false,
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has_posix_rename_semantics:false,
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no_msv1_0_s4u_logon_in_wow64:false,
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has_con_24bit_colors:false,
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},
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};
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wincaps wincap_10_1507 __attribute__((section (".cygwin_dll_common"), shared)) = {
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def_guard_pages:2,
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mmap_storage_high:0x700000000000LL,
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{
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is_server:false,
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needs_count_in_si_lpres2:false,
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needs_query_information:false,
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has_gaa_largeaddress_bug:false,
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has_broken_alloc_console:true,
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has_console_logon_sid:true,
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has_precise_system_time:true,
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has_microsoft_accounts:true,
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has_processor_groups:true,
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has_broken_prefetchvm:true,
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has_new_pebteb_region:false,
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has_broken_whoami:false,
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has_unprivileged_createsymlink:false,
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has_unbiased_interrupt_time:true,
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has_precise_interrupt_time:true,
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has_posix_unlink_semantics:false,
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has_case_sensitive_dirs:false,
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has_posix_rename_semantics:false,
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no_msv1_0_s4u_logon_in_wow64:false,
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has_con_24bit_colors:false,
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},
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};
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wincaps wincap_10_1703 __attribute__((section (".cygwin_dll_common"), shared)) = {
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def_guard_pages:2,
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mmap_storage_high:0x700000000000LL,
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{
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is_server:false,
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needs_count_in_si_lpres2:false,
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needs_query_information:false,
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has_gaa_largeaddress_bug:false,
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has_broken_alloc_console:true,
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has_console_logon_sid:true,
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has_precise_system_time:true,
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has_microsoft_accounts:true,
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has_processor_groups:true,
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has_broken_prefetchvm:false,
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has_new_pebteb_region:true,
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has_broken_whoami:false,
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has_unprivileged_createsymlink:true,
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has_unbiased_interrupt_time:true,
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has_precise_interrupt_time:true,
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has_posix_unlink_semantics:false,
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has_case_sensitive_dirs:false,
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has_posix_rename_semantics:false,
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no_msv1_0_s4u_logon_in_wow64:false,
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has_con_24bit_colors:true,
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},
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};
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wincaps wincap_10_1709 __attribute__((section (".cygwin_dll_common"), shared)) = {
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def_guard_pages:2,
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mmap_storage_high:0x700000000000LL,
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{
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is_server:false,
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needs_count_in_si_lpres2:false,
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needs_query_information:false,
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has_gaa_largeaddress_bug:false,
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has_broken_alloc_console:true,
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has_console_logon_sid:true,
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has_precise_system_time:true,
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has_microsoft_accounts:true,
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has_processor_groups:true,
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has_broken_prefetchvm:false,
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has_new_pebteb_region:true,
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has_broken_whoami:false,
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has_unprivileged_createsymlink:true,
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has_unbiased_interrupt_time:true,
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has_precise_interrupt_time:true,
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has_posix_unlink_semantics:true,
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has_case_sensitive_dirs:false,
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has_posix_rename_semantics:false,
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no_msv1_0_s4u_logon_in_wow64:false,
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has_con_24bit_colors:true,
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},
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};
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wincaps wincap_10_1803 __attribute__((section (".cygwin_dll_common"), shared)) = {
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def_guard_pages:2,
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mmap_storage_high:0x700000000000LL,
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{
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is_server:false,
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needs_count_in_si_lpres2:false,
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needs_query_information:false,
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has_gaa_largeaddress_bug:false,
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has_broken_alloc_console:true,
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has_console_logon_sid:true,
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has_precise_system_time:true,
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has_microsoft_accounts:true,
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has_processor_groups:true,
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has_broken_prefetchvm:false,
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has_new_pebteb_region:true,
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has_broken_whoami:false,
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has_unprivileged_createsymlink:true,
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has_unbiased_interrupt_time:true,
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has_precise_interrupt_time:true,
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has_posix_unlink_semantics:true,
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has_case_sensitive_dirs:true,
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has_posix_rename_semantics:false,
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no_msv1_0_s4u_logon_in_wow64:false,
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has_con_24bit_colors:true,
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},
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};
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wincaps wincap_10_1809 __attribute__((section (".cygwin_dll_common"), shared)) = {
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def_guard_pages:2,
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mmap_storage_high:0x700000000000LL,
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{
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is_server:false,
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needs_count_in_si_lpres2:false,
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needs_query_information:false,
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has_gaa_largeaddress_bug:false,
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has_broken_alloc_console:true,
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has_console_logon_sid:true,
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has_precise_system_time:true,
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has_microsoft_accounts:true,
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has_processor_groups:true,
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has_broken_prefetchvm:false,
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has_new_pebteb_region:true,
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has_broken_whoami:false,
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has_unprivileged_createsymlink:true,
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has_unbiased_interrupt_time:true,
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has_precise_interrupt_time:true,
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has_posix_unlink_semantics:true,
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has_case_sensitive_dirs:true,
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has_posix_rename_semantics:true,
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no_msv1_0_s4u_logon_in_wow64:false,
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has_con_24bit_colors:true,
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},
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};
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wincapc wincap __attribute__((section (".cygwin_dll_common"), shared));
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void
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wincapc::init ()
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{
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if (caps)
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return; // already initialized
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GetSystemInfo (&system_info);
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version.dwOSVersionInfoSize = sizeof (RTL_OSVERSIONINFOEXW);
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RtlGetVersion (&version);
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/* Overwrite unreliable kernel version with correct values returned by
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RtlGetNtVersionNumbers. See git log of this change for a description. */
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RtlGetNtVersionNumbers (&version.dwMajorVersion,
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&version.dwMinorVersion,
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&version.dwBuildNumber);
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version.dwBuildNumber &= 0xffff;
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switch (version.dwMajorVersion)
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{
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case 6:
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switch (version.dwMinorVersion)
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{
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case 0:
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caps = &wincap_vista;
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break;
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case 1:
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caps = &wincap_7;
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break;
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case 2:
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caps = &wincap_8;
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break;
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case 3:
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default:
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caps = &wincap_8_1;
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break;
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}
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break;
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case 10:
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default:
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if (likely (version.dwBuildNumber >= 17763))
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caps = &wincap_10_1809;
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else if (version.dwBuildNumber >= 17134)
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caps = &wincap_10_1803;
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else if (version.dwBuildNumber >= 16299)
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caps = &wincap_10_1709;
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else if (version.dwBuildNumber >= 15063)
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caps = &wincap_10_1703;
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else
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caps = & wincap_10_1507;
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}
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((wincaps *)caps)->is_server = (version.wProductType != VER_NT_WORKSTATION);
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#ifdef __x86_64__
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wow64 = 0;
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/* 64 bit systems have one more guard page than their 32 bit counterpart. */
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++((wincaps *)caps)->def_guard_pages;
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#else
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if (NT_SUCCESS (NtQueryInformationProcess (NtCurrentProcess (),
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ProcessWow64Information,
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&wow64, sizeof wow64, NULL))
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&& !wow64)
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#endif
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{
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((wincaps *)caps)->needs_count_in_si_lpres2 = false;
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((wincaps *)caps)->has_gaa_largeaddress_bug = false;
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((wincaps *)caps)->has_broken_prefetchvm = false;
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((wincaps *)caps)->no_msv1_0_s4u_logon_in_wow64 = false;
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}
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__small_sprintf (osnam, "NT-%d.%d", version.dwMajorVersion,
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version.dwMinorVersion);
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}
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