diff options
-rw-r--r-- | CMakeLists.txt | 2 | ||||
-rw-r--r-- | lib/builtins/CMakeLists.txt | 14 | ||||
-rw-r--r-- | lib/builtins/enable_execute_stack.c | 14 | ||||
-rw-r--r-- | lib/builtins/i386/chkstk.S | 34 | ||||
-rw-r--r-- | lib/builtins/x86_64/chkstk.S | 39 |
5 files changed, 101 insertions, 2 deletions
diff --git a/CMakeLists.txt b/CMakeLists.txt index 66334869a..e147e3096 100644 --- a/CMakeLists.txt +++ b/CMakeLists.txt @@ -164,7 +164,7 @@ set(COMPILER_RT_BINARY_DIR ${CMAKE_CURRENT_BINARY_DIR}) # We support running instrumented tests when we're not cross compiling # and target a UNIX-like system or Windows. # We can run tests on Android even when we are cross-compiling. -if(("${CMAKE_HOST_SYSTEM}" STREQUAL "${CMAKE_SYSTEM}" AND (UNIX OR MSVC)) OR ANDROID +if(("${CMAKE_HOST_SYSTEM}" STREQUAL "${CMAKE_SYSTEM}" AND (UNIX OR WIN32)) OR ANDROID OR COMPILER_RT_EMULATOR) option(COMPILER_RT_CAN_EXECUTE_TESTS "Can we execute instrumented tests" ON) else() diff --git a/lib/builtins/CMakeLists.txt b/lib/builtins/CMakeLists.txt index d79feae13..98d518a83 100644 --- a/lib/builtins/CMakeLists.txt +++ b/lib/builtins/CMakeLists.txt @@ -154,6 +154,12 @@ set(x86_64_SOURCES x86_64/floatundixf.S ${GENERIC_SOURCES}) +if(WIN32) + set(x86_64_SOURCES + ${x86_64_SOURCES} + x86_64/chkstk.S) +endif() + set(i386_SOURCES i386/ashldi3.S i386/ashrdi3.S @@ -171,6 +177,12 @@ set(i386_SOURCES i386/umoddi3.S ${GENERIC_SOURCES}) +if(WIN32) + set(i386_SOURCES + ${i386_SOURCES} + i386/chkstk.S) +endif() + set(i686_SOURCES ${i386_SOURCES}) @@ -260,7 +272,7 @@ set(arm_SOURCES add_custom_target(builtins) -if (NOT WIN32) +if (NOT WIN32 OR MINGW) foreach (arch x86_64 i386 i686 arm) if (CAN_TARGET_${arch}) # Filter out generic versions of routines that are re-implemented in diff --git a/lib/builtins/enable_execute_stack.c b/lib/builtins/enable_execute_stack.c index 63d836b31..23e494051 100644 --- a/lib/builtins/enable_execute_stack.c +++ b/lib/builtins/enable_execute_stack.c @@ -10,7 +10,9 @@ #include "int_lib.h" +#ifndef _WIN32 #include <sys/mman.h> +#endif /* #include "config.h" * FIXME: CMake - include when cmake system is ready. @@ -18,9 +20,14 @@ */ #define HAVE_SYSCONF 1 +#ifdef _WIN32 +#include <windef.h> +#include <winbase.h> +#else #ifndef __APPLE__ #include <unistd.h> #endif /* __APPLE__ */ +#endif /* _WIN32 */ #if __LP64__ #define TRAMPOLINE_SIZE 48 @@ -40,6 +47,12 @@ COMPILER_RT_ABI void __enable_execute_stack(void* addr) { +#if _WIN32 + MEMORY_BASIC_INFORMATION mbi; + if (!VirtualQuery (addr, &mbi, sizeof(mbi))) + return; /* We should probably assert here because there is no return value */ + VirtualProtect (mbi.BaseAddress, mbi.RegionSize, PAGE_EXECUTE_READWRITE, &mbi.Protect); +#else #if __APPLE__ /* On Darwin, pagesize is always 4096 bytes */ const uintptr_t pageSize = 4096; @@ -55,4 +68,5 @@ __enable_execute_stack(void* addr) unsigned char* endPage = (unsigned char*)((p+TRAMPOLINE_SIZE+pageSize) & pageAlignMask); size_t length = endPage - startPage; (void) mprotect((void *)startPage, length, PROT_READ | PROT_WRITE | PROT_EXEC); +#endif } diff --git a/lib/builtins/i386/chkstk.S b/lib/builtins/i386/chkstk.S new file mode 100644 index 000000000..3733d722e --- /dev/null +++ b/lib/builtins/i386/chkstk.S @@ -0,0 +1,34 @@ +// This file is dual licensed under the MIT and the University of Illinois Open +// Source Licenses. See LICENSE.TXT for details. + +#include "../assembly.h" + +// _chkstk routine +// This routine is windows specific +// http://msdn.microsoft.com/en-us/library/ms648426.aspx + +#ifdef __i386__ + +.text +.balign 4 +DEFINE_COMPILERRT_FUNCTION(__chkstk_ms) + push %ecx + push %eax + cmp $0x1000,%eax + lea 12(%esp),%ecx + jb 1f +2: + sub $0x1000,%ecx + orl $0,(%ecx) + sub $0x1000,%eax + cmp $0x1000,%eax + ja 2b +1: + sub %eax,%ecx + orl $0,(%ecx) + pop %eax + pop %ecx + ret +END_COMPILERRT_FUNCTION(__chkstk_ms) + +#endif // __i386__ diff --git a/lib/builtins/x86_64/chkstk.S b/lib/builtins/x86_64/chkstk.S new file mode 100644 index 000000000..5759e8449 --- /dev/null +++ b/lib/builtins/x86_64/chkstk.S @@ -0,0 +1,39 @@ +// This file is dual licensed under the MIT and the University of Illinois Open +// Source Licenses. See LICENSE.TXT for details. + +#include "../assembly.h" + +// _chkstk routine +// This routine is windows specific +// http://msdn.microsoft.com/en-us/library/ms648426.aspx + +// Notes from r227519 +// MSVC x64s __chkstk and cygmings ___chkstk_ms do not adjust %rsp +// themselves. It also does not clobber %rax so we can reuse it when +// adjusting %rsp. + +#ifdef __x86_64__ + +.text +.balign 4 +DEFINE_COMPILERRT_FUNCTION(___chkstk_ms) + push %rcx + push %rax + cmp $0x1000,%rax + lea 24(%rsp),%rcx + jb 1f +2: + sub $0x1000,%rcx + orl $0,(%rcx) + sub $0x1000,%rax + cmp $0x1000,%rax + ja 2b +1: + sub %rax,%rcx + orl $0,(%rcx) + pop %rax + pop %rcx + ret +END_COMPILERRT_FUNCTION(___chkstk_ms) + +#endif // __x86_64__ |