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Add some basic mingw support.

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Patch by Ruben Van Boxem! 

llvm-svn: 148048
This commit is contained in:
Anton Korobeynikov 2012-01-12 21:13:48 +00:00
parent b1ca881191
commit 48cfd55c5d
3 changed files with 50 additions and 11 deletions
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7
compiler-rt/lib/int_endianness.h
View File

@ -80,6 +80,13 @@
#endif /* GNU/Linux */
#if defined(_WIN32)
#define _YUGA_LITTLE_ENDIAN 1
#define _YUGA_BIG_ENDIAN 0
#endif /* Windows */
/* . */
#if !defined(_YUGA_LITTLE_ENDIAN) || !defined(_YUGA_BIG_ENDIAN)

29
compiler-rt/test/Unit/clear_cache_test.c
View File

@ -11,11 +11,20 @@
#include <stdio.h>
#include <string.h>
#include <stdint.h>
#if defined(_WIN32)
#include <windows.h>
void __clear_cache(void* start, void* end)
{
if (!FlushInstructionCache(GetCurrentProcess(), start, end-start))
exit(1);
}
#else
#include <sys/mman.h>
extern void __clear_cache(void* start, void* end);
#endif
typedef int (*pfunc)(void);
@ -38,21 +47,29 @@ int main()
// make executable the page containing execution_buffer
char* start = (char*)((uintptr_t)execution_buffer & (-4095));
char* end = (char*)((uintptr_t)(&execution_buffer[128+4096]) & (-4095));
if ( mprotect(start, end-start, PROT_READ|PROT_WRITE|PROT_EXEC) != 0 )
#if defined(_WIN32)
DWORD dummy_oldProt;
MEMORY_BASIC_INFORMATION b;
if (!VirtualQuery(start, &b, sizeof(b)))
return 1;
if (!VirtualProtect(b.BaseAddress, b.RegionSize, PAGE_EXECUTE_READWRITE, &b.Protect))
#else
if (mprotect(start, end-start, PROT_READ|PROT_WRITE|PROT_EXEC) != 0)
#endif
return 1;
// verify you can copy and execute a function
memcpy(execution_buffer, (void *)(uintptr_t)&func1, 128);
__clear_cache(execution_buffer, &execution_buffer[128]);
pfunc f1 = (pfunc)(uintptr_t)execution_buffer;
if ( (*f1)() != 1 )
if ((*f1)() != 1)
return 1;
// verify you can overwrite a function with another
memcpy(execution_buffer, (void *)(uintptr_t)&func2, 128);
__clear_cache(execution_buffer, &execution_buffer[128]);
pfunc f2 = (pfunc)(uintptr_t)execution_buffer;
if ( (*f2)() != 2 )
if ((*f2)() != 2)
return 1;
return 0;

25
compiler-rt/test/Unit/enable_execute_stack_test.c
View File

@ -11,12 +11,27 @@
#include <stdio.h>
#include <string.h>
#include <stdint.h>
#if defined(_WIN32)
#include <windows.h>
void __clear_cache(void* start, void* end)
{
if (!FlushInstructionCache(GetCurrentProcess(), start, end-start))
exit(1);
}
void __enable_execute_stack(void *addr)
{
MEMORY_BASIC_INFORMATION b;
if (!VirtualQuery(addr, &b, sizeof(b)))
exit(1);
if (!VirtualProtect(b.BaseAddress, b.RegionSize, PAGE_EXECUTE_READWRITE, &b.Protect))
exit(1);
}
#else
#include <sys/mman.h>
extern void __clear_cache(void* start, void* end);
extern void __enable_execute_stack(void* addr);
#endif
typedef int (*pfunc)(void);
@ -43,14 +58,14 @@ int main()
memcpy(execution_buffer, (void *)(uintptr_t)&func1, 128);
__clear_cache(execution_buffer, &execution_buffer[128]);
pfunc f1 = (pfunc)(uintptr_t)execution_buffer;
if ( (*f1)() != 1 )
if ((*f1)() != 1)
return 1;
// verify you can overwrite a function with another
memcpy(execution_buffer, (void *)(uintptr_t)&func2, 128);
__clear_cache(execution_buffer, &execution_buffer[128]);
pfunc f2 = (pfunc)(uintptr_t)execution_buffer;
if ( (*f2)() != 2 )
if ((*f2)() != 2)
return 1;
return 0;